/* ========================================
   潜行未来机器人 - 全局样式
   ======================================== */

:root {
  --color-primary: #564396;
  --color-primary-hover: #6b55b0;
  --color-accent: #564396;
  --color-text: #1a1a1a;
  --color-text-secondary: #666;
  --color-text-light: #999;
  --color-border: #e5e5e5;
  --color-bg: #fff;
  --color-overlay: rgba(0, 0, 0, 0.35);
  --header-height: 72px;
  --section-height: calc(100vh - var(--header-height));
  --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition: 0.3s ease;
  --shadow-header: 0 2px 20px rgba(0, 0, 0, 0.06);
  --brand-blue: #235598;
  --brand-purple: #6c438f;
  --brand-gradient: linear-gradient(135deg, #235598 0%, #6c438f 100%);
  --layout-max: 1440px;
  --layout-gutter: 40px;
  --layout-content: calc(var(--layout-max) - 2 * var(--layout-gutter));
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

/* LOGO 同款文字渐变 */
.text-gradient {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img, video {
  display: block;
  max-width: 100%;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

/* ========================================
   顶部导航
   ======================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1200;
  height: var(--header-height);
  background: transparent;
  transition: box-shadow var(--transition);
  overflow: visible;
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background var(--transition);
  pointer-events: none;
  z-index: 0;
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-header);
}

.site-header.is-scrolled::before {
  background: rgba(255, 255, 255, 0.98);
}

.site-header.is-solid::before {
  background: #fff;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--layout-max);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--layout-gutter);
  overflow: visible;
  position: relative;
  z-index: 1;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  display: block;
  width: auto;
  height: 44px;
  max-width: 200px;
  object-fit: contain;
}

/* 主导航 */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  overflow: visible;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow: visible;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 24px;
  font-size: 15px;
  color: var(--color-text);
  transition: color var(--transition);
  white-space: nowrap;
}

.nav-link:hover,
.nav-item.is-active .nav-link {
  color: var(--color-accent);
}

.nav-item.has-mega.is-active > .nav-link {
  color: var(--color-accent);
}

.nav-arrow {
  transition: transform var(--transition);
}

.nav-item:hover .nav-arrow {
  transform: rotate(180deg);
}

.nav-item.has-dropdown:hover {
  z-index: 10;
}

/* ---- 普通下拉菜单 ---- */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 160px;
  padding: 8px 0;
  margin-top: 0;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

.nav-item.has-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
}

.dropdown-menu li a {
  display: block;
  padding: 10px 24px;
  font-size: 14px;
  color: var(--color-text);
  transition: background var(--transition), color var(--transition);
}

.dropdown-menu li a:hover {
  background: #f5f7ff;
  color: var(--color-accent);
}

/* ---- 产品中心 Mega Menu（左侧分类 + 右侧产品） ---- */
.mega-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  z-index: 1201;
  background: #fff;
  border-top: 1px solid var(--color-border);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
  pointer-events: none;
}

/* 向上延伸透明桥接区，防止鼠标移动时断开 */
.mega-menu::before {
  content: "";
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 12px;
}

.nav-item.has-mega:hover .mega-menu,
.mega-menu.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mega-menu-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 32px 40px 36px;
}

.mega-menu-inner--split {
  display: flex;
  gap: 0;
  min-height: 320px;
  padding: 0;
}

.mega-sidebar {
  width: 280px;
  flex-shrink: 0;
  padding: 28px 0 28px 40px;
  border-right: 1px solid #f0f0f0;
}

.mega-group + .mega-group {
  margin-top: 28px;
}

.mega-group-title {
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text-light);
  margin-bottom: 8px;
  padding: 0 16px;
}

.mega-cat-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mega-cat-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--color-text);
  text-align: left;
  border-radius: 4px;
  transition: background var(--transition), color var(--transition);
}

.mega-cat-list--plain .mega-cat-item {
  padding-left: 16px;
}

.mega-cat-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.85;
}

.mega-cat-item:hover,
.mega-cat-item.is-active {
  background: #f5f5f5;
}

.mega-cat-item.is-active {
  font-weight: 500;
}

.mega-products {
  flex: 1;
  padding: 28px 40px 32px;
  min-width: 0;
}

.mega-panel {
  display: none;
}

.mega-panel.is-active {
  display: block;
}

.mega-product-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.mega-product-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 160px;
  transition: transform var(--transition);
}

.mega-product-card:hover {
  transform: translateY(-2px);
}

.mega-product-card.is-placeholder {
  cursor: default;
}

.mega-product-card.is-placeholder:hover {
  transform: none;
}

.mega-product-card-img {
  width: 160px;
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f0f0f0;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 12px;
}

.mega-product-card-img img {
  width: 90%;
  height: auto;
  max-height: 85%;
  object-fit: contain;
  object-position: center bottom;
}

.mega-product-card-img--placeholder {
  background: linear-gradient(180deg, #ececec 0%, #e0e0e0 100%);
}

.mega-product-card-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  text-align: center;
  line-height: 1.4;
}

/* ---- 行业应用 Mega Menu（宇树式：标题 + 大图 + 副标题） ---- */
.mega-menu--solutions .mega-menu-inner {
  padding: 36px 48px 40px;
}

.mega-solution-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px 56px;
  max-width: 1200px;
  margin: 0 auto;
}

.mega-solution-grid--single {
  justify-content: flex-start;
}

.mega-solution-grid--single .mega-solution-card {
  flex: 0 1 400px;
  max-width: 420px;
}

.mega-solution-card {
  flex: 0 1 380px;
  max-width: 420px;
  color: var(--color-text);
  text-align: left;
  transition: transform var(--transition);
}

.mega-solution-card:hover {
  transform: translateY(-3px);
}

.mega-solution-card-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 14px;
  color: var(--color-text);
}

.mega-solution-card-img {
  aspect-ratio: 16 / 10;
  border-radius: 4px;
  overflow: hidden;
  background: #f0f0f0;
  margin-bottom: 12px;
}

.mega-solution-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.mega-solution-card:hover .mega-solution-card-img img {
  transform: scale(1.03);
}

.mega-solution-card-desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--color-text-secondary);
  margin: 0;
}

/* 应用详情首屏（图片 Banner） */
.page-solution .solution-banner.indexpic-section {
  height: var(--section-height);
  min-height: calc(560px - var(--header-height));
  margin-top: var(--header-height);
}

.page-solution .solution-banner-inner {
  position: absolute;
  inset: 0;
  z-index: 2;
  max-width: 1440px;
  margin: 0 auto;
  left: 0;
  right: 0;
  padding: 0 40px;
  pointer-events: none;
}

.page-solution .solution-banner-inner .hero-content {
  width: 100%;
  max-width: none;
  padding: 0;
  pointer-events: auto;
}

.page-solution .solution-hero-btn {
  margin-top: 24px;
}

@media (max-width: 1499px) {
  .page-solution .solution-banner-inner {
    padding: 0 clamp(40px, 5vw, 72px);
  }

  .page-solution .solution-banner-inner .hero-content {
    width: auto;
    max-width: min(720px, 100%);
    padding: 0 clamp(16px, 2.5vw, 32px);
  }

  .page-solution .solution-banner-inner .hero-content--pos-1,
  .page-solution .solution-banner-inner .hero-content--pos-4,
  .page-solution .solution-banner-inner .hero-content--pos-7 {
    left: clamp(12px, 2vw, 28px);
    right: auto;
  }

  .page-solution .solution-banner-inner .hero-content--pos-3,
  .page-solution .solution-banner-inner .hero-content--pos-6,
  .page-solution .solution-banner-inner .hero-content--pos-9 {
    right: clamp(12px, 2vw, 28px);
    left: auto;
  }
}

/* 场景解决方案 */
.page-solution .solution-scene {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: #fff;
}

.solution-scene-media {
  position: absolute;
  inset: 0;
}

.solution-scene-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.solution-scene-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.88) 0%,
    rgba(255, 255, 255, 0.72) 45%,
    rgba(255, 255, 255, 0.55) 100%
  );
}

.solution-scene-inner {
  position: relative;
  z-index: 2;
  max-width: 1440px;
  margin: 0 auto;
  padding: 120px 40px;
}

.solution-scene-inner .hero-content {
  position: relative;
  top: auto;
  left: auto;
  right: auto;
  bottom: auto;
  transform: none;
  width: 100%;
  max-width: none;
  padding: 0;
  pointer-events: auto;
}

.solution-scene-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  color: #1a1a1a;
  letter-spacing: 1px;
  margin: 0 0 20px;
}

.solution-scene-desc {
  font-size: clamp(14px, 1.6vw, 18px);
  line-height: 1.9;
  color: #4b5563;
  white-space: pre-line;
}

.solution-scene-desc p {
  margin: 0 0 12px;
}

.solution-scene-desc p:last-child {
  margin-bottom: 0;
}

.hero-content--pos-2 .solution-scene-desc,
.hero-content--pos-5 .solution-scene-desc,
.hero-content--pos-8 .solution-scene-desc {
  margin-left: auto;
  margin-right: auto;
}

.hero-content--pos-3 .solution-scene-desc,
.hero-content--pos-6 .solution-scene-desc,
.hero-content--pos-9 .solution-scene-desc {
  margin-left: auto;
}

/* 第三屏：模块化功能（参考 Ghost Robotics feature_section） */
.solution-feature.feature_section {
  position: relative;
  width: 100%;
  background: #f3f4f6;
  overflow: hidden;
}

.solution-feature-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 80px 40px 80px;
  display: flex;
  flex-direction: column;
}

.solution-feature-head {
  flex-shrink: 0;
  margin-bottom: 36px;
}

.solution-feature-heading {
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 600;
  color: #1a1a1a;
  margin: 0;
  letter-spacing: 0.02em;
}

.solution-feature-subtitle {
  margin: 12px 0 0;
  max-width: 760px;
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.75;
  color: #6b7280;
}

.solution-feature-body {
  display: grid;
  grid-template-columns: minmax(0, 42%) minmax(0, 58%);
  gap: 0;
  align-items: center;
}

.solution-feature-list {
  display: flex;
  flex-direction: column;
}

.solution-feature-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  grid-template-rows: auto auto;
  gap: 0 20px;
  align-items: start;
  width: 100%;
  padding: 26px 32px;
  text-align: left;
  color: rgba(26, 26, 26, 0.45);
  background: transparent;
  border: none;
  border-bottom: 1px solid transparent;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.solution-feature-item:hover {
  color: rgba(26, 26, 26, 0.72);
}

.solution-feature-item.is-active {
  color: #1a1a1a;
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

.solution-feature-num {
  grid-row: 1 / span 2;
  font-size: clamp(15px, 1.4vw, 18px);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: inherit;
  padding-top: 6px;
}

.solution-feature-item-title {
  grid-column: 2;
  font-size: clamp(16px, 1.5vw, 18px);
  font-weight: 500;
  line-height: 1.45;
  color: inherit;
  transition: font-size var(--transition);
}

.solution-feature-item.is-active .solution-feature-item-title {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 600;
  line-height: 1.35;
}

.solution-feature-item-detail {
  grid-column: 2;
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.45s ease;
}

.solution-feature-item.is-active .solution-feature-item-detail {
  grid-template-rows: 1fr;
}

.solution-feature-item-desc {
  overflow: hidden;
  margin: 0;
  padding-top: 0;
  font-size: clamp(14px, 1.35vw, 16px);
  line-height: 1.8;
  color: #4b5563;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s ease, transform 0.4s ease, padding 0.4s ease;
}

.solution-feature-item.is-active .solution-feature-item-desc {
  opacity: 1;
  transform: translateY(0);
  padding-top: 14px;
  font-size: clamp(15px, 1.45vw, 17px);
}

.solution-feature-visual {
  position: relative;
  height: 400px;
  max-height: 400px;
}

.solution-feature-visual-item {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.98);
  transition: opacity 0.55s ease, transform 0.55s ease, visibility 0.55s ease;
}

.solution-feature-visual-item.is-active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.solution-feature-visual-item img {
  max-width: 100%;
  max-height: 400px;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.solution-feature-visual-placeholder {
  width: 60%;
  height: 50%;
  background: linear-gradient(180deg, #e8e8e8 0%, #ddd 100%);
  border-radius: 4px;
}

.solution-feature-progress {
  flex-shrink: 0;
  height: 2px;
  margin-top: 24px;
  background: rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

.solution-feature-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: var(--color-primary);
  transform-origin: left center;
}

.solution-feature-progress-bar.is-animating {
  animation: solutionFeatureProgress 5s linear forwards;
}

@keyframes solutionFeatureProgress {
  from { width: 0; }
  to { width: 100%; }
}

.solution-content-section {
  background: #fff;
  padding: 88px 40px 96px;
}

.solution-content-inner {
  max-width: 1440px;
  margin: 0 auto;
}

.solution-detail-content {
  color: var(--color-text);
}

.solution-detail-content.htmlContent {
  font-size: 16px;
  line-height: 1.85;
  word-break: break-word;
}

.solution-detail-content.htmlContent > h1:first-child,
.solution-detail-content.htmlContent > h2:first-child,
.solution-detail-content.htmlContent > h3:first-child {
  margin: 0 0 48px;
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-align: center;
  color: #221e20;
}

.solution-detail-content.htmlContent h1,
.solution-detail-content.htmlContent h2,
.solution-detail-content.htmlContent h3,
.solution-detail-content.htmlContent h4 {
  margin: 1.5em 0 0.75em;
  font-weight: 600;
  line-height: 1.35;
  color: #221e20;
}

.solution-detail-content.htmlContent p {
  margin: 0 0 1em;
}

.solution-detail-content.htmlContent img,
.solution-detail-content.htmlContent video {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  border-radius: 4px;
}

.solution-detail-content.htmlContent img {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.solution-detail-content.htmlContent ul,
.solution-detail-content.htmlContent ol {
  margin: 0 0 1em 1.25em;
}

.solution-detail-content.htmlContent li {
  margin-bottom: 0.35em;
}

.solution-detail-content.htmlContent a {
  color: var(--color-accent);
  text-decoration: underline;
}

.solution-detail-content.htmlContent table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
}

.solution-detail-content.htmlContent th,
.solution-detail-content.htmlContent td {
  padding: 10px 12px;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

/* 第五屏：典型应用场景（参考宇树 scene） */
.solution-apply-scene.scene {
  background: #111;
  color: #fff;
  padding: 88px 40px 96px;
}

.solution-apply-scene-inner {
  max-width: 1440px;
  margin: 0 auto;
}

.solution-apply-scene-heading {
  margin: 0 0 56px;
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  letter-spacing: -0.02em;
}

.solution-apply-scene-body {
  display: grid;
  grid-template-columns: minmax(0, 360px) minmax(0, 1fr);
  gap: 48px 96px;
  align-items: start;
}

.solution-apply-list {
  display: flex;
  flex-direction: column;
  max-width: 360px;
  gap: 28px;
}

.solution-apply-item {
  display: block;
  width: 100%;
  padding: 0;
  min-height: 0;
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  opacity: 0.38;
  transition: opacity 0.35s ease;
  outline: none;
}

.solution-apply-item.is-active {
  opacity: 1;
}

.solution-apply-item:focus-visible {
  opacity: 1;
}

.solution-apply-item-title {
  display: block;
  margin: 0 0 12px;
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 600;
  line-height: 1.3;
  color: #fff;
}

.solution-apply-item-desc {
  display: block;
  margin: 0;
  font-size: clamp(14px, 1.35vw, 16px);
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.68);
  white-space: pre-line;
}

.solution-apply-panels {
  position: sticky;
  top: calc(var(--header-height) + 48px);
  min-height: 320px;
}

.solution-apply-panel {
  display: none;
}

.solution-apply-panel.is-active {
  display: block;
  animation: solutionApplyPanelIn 0.4s ease;
}

@keyframes solutionApplyPanelIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.solution-apply-visuals {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.solution-apply-card {
  position: relative;
  margin: 0;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: 2px;
  transform: scale(0.98);
  transition: transform 0.45s ease;
}

.solution-apply-card::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(0, 0, 0, 0.58);
  pointer-events: none;
  transition: opacity 0.45s ease;
}

.solution-apply-card:hover {
  transform: scale(1);
}

.solution-apply-card:hover::after {
  opacity: 0;
}

.solution-apply-card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.solution-apply-card:hover img {
  transform: scale(1.03);
}

.solution-apply-card-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #2a2a2a 0%, #1a1a1a 100%);
}

.solution-apply-card-label {
  position: absolute;
  top: 18px;
  left: 18px;
  z-index: 2;
  font-size: clamp(16px, 1.5vw, 20px);
  font-weight: 500;
  line-height: 1.4;
  color: #fff;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.45);
  pointer-events: none;
}

@media (max-width: 1024px) {
  .mega-solution-grid {
    gap: 28px 32px;
  }

  .mega-solution-card {
    flex: 0 1 calc(50% - 16px);
    max-width: none;
  }
}

@media (max-width: 640px) {
  .mega-menu--solutions .mega-menu-inner {
    padding: 24px 20px 28px;
  }

  .mega-solution-card {
    flex: 1 1 100%;
  }

  .solution-content-section {
    padding: 56px 20px 64px;
  }

  .solution-detail-content.htmlContent > h1:first-child,
  .solution-detail-content.htmlContent > h2:first-child,
  .solution-detail-content.htmlContent > h3:first-child {
    margin-bottom: 32px;
    font-size: clamp(24px, 6vw, 32px);
  }

  .solution-apply-scene.scene {
    padding: 56px 20px 64px;
  }

  .solution-apply-scene-heading {
    margin-bottom: 36px;
  }

  .solution-apply-scene-body {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .solution-apply-list {
    max-width: none;
    gap: 20px;
  }

  .solution-apply-item {
    padding: 0;
  }

  .solution-apply-panels {
    position: static;
    min-height: 0;
  }

  .solution-apply-visuals {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }

  .solution-apply-card {
    aspect-ratio: 3 / 4;
  }

  .solution-apply-card-label {
    top: 10px;
    left: 10px;
    font-size: 15px;
  }

  .page-solution .solution-banner-inner {
    padding: 0 24px;
  }

  .page-solution .solution-banner-inner .hero-content {
    width: auto;
    max-width: min(640px, 100%);
    padding: 0 8px;
  }

  .page-solution .solution-banner-inner .hero-content--pos-1,
  .page-solution .solution-banner-inner .hero-content--pos-4,
  .page-solution .solution-banner-inner .hero-content--pos-7 {
    left: 8px;
  }

  .page-solution .solution-banner-inner .hero-content--pos-3,
  .page-solution .solution-banner-inner .hero-content--pos-6,
  .page-solution .solution-banner-inner .hero-content--pos-9 {
    right: 8px;
  }

  .solution-scene-inner {
    padding: 64px 20px;
  }

  .solution-feature-inner {
    padding: 32px 20px 40px;
  }

  .solution-feature-head {
    margin-bottom: 28px;
  }

  .solution-feature-subtitle {
    margin-top: 10px;
  }

  .solution-feature-body {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
  }

  .solution-feature-list {
    max-height: none;
  }

  .solution-feature-visual {
    height: 280px;
    max-height: 280px;
    order: -1;
  }

  .solution-feature-visual-item {
    padding: 12px 16px;
  }

  .solution-feature-visual-item img {
    max-height: 280px;
  }

  .solution-feature-item {
    padding: 20px 22px;
    grid-template-columns: 48px 1fr;
    gap: 0 14px;
  }

  .solution-feature-item.is-active .solution-feature-item-title {
    font-size: 18px;
  }

  .solution-feature-item-desc,
  .solution-feature-item.is-active .solution-feature-item-desc {
    font-size: 14px;
  }
}

/* 右侧工具栏 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn-search {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text-secondary);
  transition: border-color var(--transition), color var(--transition);
}

.btn-search:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ========================================
   搜索弹窗（参考宇树）
   ======================================== */

.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: calc(var(--header-height) + 24px) 24px 24px;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition), visibility var(--transition);
}

.search-overlay.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.search-modal {
  width: 100%;
  max-width: 720px;
  background: #fff;
  border-radius: 12px;
  padding: 28px 32px 32px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
  transform: translateY(-16px);
  transition: transform var(--transition);
}

.search-overlay.is-open .search-modal {
  transform: translateY(0);
}

.search-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.search-modal-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.search-modal-close {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin: -4px -8px 0 0;
  border-radius: 50%;
  color: var(--color-text-secondary);
  transition: background var(--transition), color var(--transition);
}

.search-modal-close:hover {
  background: #f5f5f5;
  color: var(--color-text);
}

.search-modal-input-wrap {
  position: relative;
  margin-bottom: 24px;
}

.search-input-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  pointer-events: none;
}

.search-modal-input {
  width: 100%;
  height: 48px;
  padding: 0 16px 0 44px;
  font-size: 15px;
  font-family: inherit;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-modal-input::placeholder {
  color: var(--color-text-light);
}

.search-modal-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-recommend-label {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.search-result-list {
  max-height: 320px;
  overflow-y: auto;
  background: #f7f7f7;
  border-radius: 8px;
  padding: 4px 0;
}

.search-result-list::-webkit-scrollbar {
  width: 6px;
}

.search-result-list::-webkit-scrollbar-thumb {
  background: #ccc;
  border-radius: 3px;
}

.search-result-item-wrap.is-hidden {
  display: none;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  transition: background var(--transition);
}

.search-result-item:hover {
  background: #eee;
}

.search-result-thumb {
  flex-shrink: 0;
  width: 72px;
  height: 52px;
  border-radius: 6px;
  overflow: hidden;
  background: #e8e8e8;
}

.search-result-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.search-result-thumb--placeholder {
  background: linear-gradient(135deg, #e8e8e8 0%, #d4d4d4 100%);
}

.search-result-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.search-result-info strong {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

.search-result-info span {
  font-size: 13px;
  color: var(--color-text-light);
}

.search-no-result {
  padding: 32px 20px;
  text-align: center;
  font-size: 14px;
  color: var(--color-text-light);
  background: #f7f7f7;
  border-radius: 8px;
}

.search-result-badge {
  display: inline-flex;
  align-items: center;
  padding: 1px 6px;
  font-size: 11px;
  font-style: normal;
  font-weight: 500;
  color: var(--color-primary, #564396);
  background: rgba(86, 67, 150, 0.1);
  border-radius: 3px;
}

/* ========================================
   搜索结果页
   ======================================== */

.search-page-main {
  background: #F3F4F6;
  padding: 40px 40px 80px;
}

.search-page-inner {
  max-width: var(--layout-max, 1440px);
  margin: 0 auto;
  padding: 0 var(--layout-gutter, 0);
}

.search-page-form {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  background: #fff;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 10px;
  padding: 8px 8px 8px 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-page-form:focus-within {
  border-color: var(--color-primary, #564396);
  box-shadow: 0 0 0 3px rgba(86, 67, 150, 0.12);
}

.search-page-form-icon {
  flex-shrink: 0;
  color: var(--color-text-light);
}

.search-page-input {
  flex: 1;
  min-width: 0;
  height: 44px;
  border: 0;
  outline: none;
  font-size: 16px;
  font-family: inherit;
  color: var(--color-text);
  background: transparent;
}

.search-page-input::placeholder {
  color: var(--color-text-light);
}

.search-page-submit {
  flex-shrink: 0;
  height: 44px;
  padding: 0 24px;
  border: 0;
  border-radius: 8px;
  background: var(--color-primary, #564396);
  color: #fff;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: opacity var(--transition);
}

.search-page-submit:hover {
  opacity: 0.9;
}

.search-page-summary {
  margin: 0 0 24px;
  font-size: 14px;
  color: var(--color-text-secondary, #6b7280);
}

.search-page-summary strong {
  color: var(--color-primary, #564396);
  font-weight: 600;
}

.search-page-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.search-page-item {
  display: flex;
  gap: 24px;
  align-items: stretch;
  padding: 20px 24px;
  background: #fff;
  transition: box-shadow var(--transition), transform var(--transition);
}

.search-page-item:hover {
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.06);
  transform: translateY(-1px);
}

.search-page-thumb {
  flex-shrink: 0;
  width: 160px;
  height: 112px;
  overflow: hidden;
  background: #eee;
}

.search-page-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.search-page-item:hover .search-page-thumb img {
  transform: scale(1.04);
}

.search-page-thumb--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #eceaf5 0%, #e2e0ea 100%);
  color: var(--color-primary, #564396);
}

.search-page-thumb-icon {
  display: flex;
  opacity: 0.7;
}

.search-page-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.search-page-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--color-text-light);
}

.search-page-tag {
  display: inline-flex;
  padding: 2px 8px;
  border-radius: 3px;
  background: #f3f4f6;
  color: var(--color-text-secondary, #6b7280);
  font-size: 12px;
}

.search-page-tag--download {
  background: rgba(86, 67, 150, 0.1);
  color: var(--color-primary, #564396);
}

.search-page-title {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
}

.search-page-item:hover .search-page-title {
  color: var(--color-primary, #564396);
}

.search-page-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-secondary, #6b7280);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.search-page-action {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary, #564396);
}

.search-page-empty {
  padding: 72px 24px;
  text-align: center;
  font-size: 15px;
  color: var(--color-text-secondary);
  background: #fff;
}

.search-page-pagination {
  margin-top: 40px;
  text-align: center;
}

.search-page-pagination .pagination {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.search-page-pagination .pagination > li {
  display: inline-block;
}

.search-page-pagination .pagination > li > a,
.search-page-pagination .pagination > li > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  font-size: 14px;
  color: var(--color-text);
  background: #fff;
  border: 1px solid var(--color-border, #e5e7eb);
  text-decoration: none;
}

.search-page-pagination .pagination > li.active > span,
.search-page-pagination .pagination > li > a:hover {
  color: #fff;
  background: var(--color-primary, #564396);
  border-color: var(--color-primary, #564396);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 0 24px;
  height: 40px;
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  border-radius: 999px;
  transition: background var(--transition);
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-lang {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 8px;
  height: 40px;
  font-size: 13px;
  color: var(--color-text-secondary);
  transition: color var(--transition);
  white-space: nowrap;
}

.btn-lang:hover {
  color: var(--color-accent);
}

.btn-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
}

.btn-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.btn-hamburger.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.btn-hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.btn-hamburger.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   首页 Hero Banner
   ======================================== */

.hero {
  position: relative;
  width: 100%;
  height: var(--section-height);
  min-height: calc(560px - var(--header-height));
  margin-top: var(--header-height);
  overflow: hidden;
  background: #2a2a2a;
}

.hero-slider {
  position: relative;
  width: 100%;
  height: 100%;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

.hero-slide.is-active {
  opacity: 1;
  visibility: visible;
  z-index: 1;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img,
.hero-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* 设计稿截图作临时素材时，裁切掉顶部导航区域 */
.hero-slide[data-type="image"]:first-child .hero-media img {
  object-position: center 72%;
}

.hero-media-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(160deg, #3a3a3a 0%, #1a1a1a 50%, #4a4a4a 100%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.15) 0%,
    rgba(0, 0, 0, 0.05) 40%,
    rgba(0, 0, 0, 0.2) 100%
  );
  z-index: 1;
}

.hero-content {
  position: absolute;
  z-index: 2;
  width: min(90%, 800px);
  padding: 0 clamp(24px, 5vw, 80px);
}

/* Banner 文字方位：parsetpl 1-9 */
.hero-content--pos-1 {
  top: 14%;
  left: 0;
  right: auto;
  transform: none;
  text-align: left;
}

.hero-content--pos-2 {
  top: 14%;
  left: 50%;
  right: auto;
  transform: translateX(-50%);
  text-align: center;
}

.hero-content--pos-3 {
  top: 14%;
  left: auto;
  right: 0;
  transform: none;
  text-align: right;
}

.hero-content--pos-4 {
  top: 50%;
  left: 0;
  right: auto;
  transform: translateY(-50%);
  text-align: left;
}

.hero-content--pos-5 {
  top: 50%;
  left: 50%;
  right: auto;
  transform: translate(-50%, -50%);
  text-align: center;
}

.hero-content--pos-6 {
  top: 50%;
  left: auto;
  right: 0;
  transform: translateY(-50%);
  text-align: right;
}

.hero-content--pos-7 {
  top: auto;
  bottom: 14%;
  left: 0;
  right: auto;
  transform: none;
  text-align: left;
}

.hero-content--pos-8 {
  top: auto;
  bottom: 14%;
  left: 50%;
  right: auto;
  transform: translateX(-50%);
  text-align: center;
}

.hero-content--pos-9 {
  top: auto;
  bottom: 14%;
  left: auto;
  right: 0;
  transform: none;
  text-align: right;
}

.hero-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
  margin-bottom: 12px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.hero-cta {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.5px;
  transition: color var(--transition), transform var(--transition);
}

.hero-cta:hover {
  color: #60a5fa;
  transform: translateX(4px);
}

/* 轮播控制 */
.hero-controls {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 20px;
  z-index: 10;
}

/* 仅一条轮播：隐藏切换控件（[hidden] 需覆盖 display:flex） */
.hero-controls[hidden],
#hero:has(#heroSlider .hero-slide:only-child) .hero-controls {
  display: none !important;
}

.hero-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  backdrop-filter: blur(4px);
  transition: background var(--transition);
}

.hero-arrow:hover {
  background: rgba(255, 255, 255, 0.3);
}

.hero-dots {
  display: flex;
  gap: 8px;
}

.hero-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  border: none;
  padding: 0;
}

.hero-dot.is-active {
  background: #fff;
  transform: scale(1.25);
}

/* 首页 indexpic 区块（视频双按钮 / 图片静态 Banner） */
.indexpic-section {
  position: relative;
  width: 100%;
  /* 与首屏 Hero 一致：每屏占满 100vh（Hero = margin-top + section-height） */
  height: 100vh;
  min-height: 560px;
  overflow: hidden;
  background: #2a2a2a;
}

.indexpic-media {
  position: absolute;
  inset: 0;
}

.indexpic-media img,
.indexpic-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.indexpic-actions {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
}

.hero-content--pos-1 .indexpic-actions,
.hero-content--pos-4 .indexpic-actions,
.hero-content--pos-7 .indexpic-actions {
  justify-content: flex-start;
}

.hero-content--pos-2 .indexpic-actions,
.hero-content--pos-5 .indexpic-actions,
.hero-content--pos-8 .indexpic-actions {
  justify-content: center;
}

.hero-content--pos-3 .indexpic-actions,
.hero-content--pos-6 .indexpic-actions,
.hero-content--pos-9 .indexpic-actions {
  justify-content: flex-end;
}

.indexpic-content .hero-subtitle:last-child {
  margin-bottom: 0;
}

.indexpic-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 140px;
  height: 48px;
  padding: 0 36px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.5px;
  border-radius: 999px;
  transition: background var(--transition), color var(--transition), border-color var(--transition), opacity var(--transition);
}

.indexpic-btn--primary {
  color: #1a1a1a;
  background: #fff;
  border: 1px solid #fff;
}

.indexpic-btn--primary:hover {
  background: rgba(255, 255, 255, 0.92);
}

.indexpic-btn--outline {
  color: #fff;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.9);
}

.indexpic-btn--outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

button.indexpic-btn {
  cursor: pointer;
  font-family: inherit;
}

/* ========================================
   首页产品板块（参考 indexPro）
   ======================================== */

.index-pro {
  padding: 12px 12px 80px;
}

.index-pro-inner {
  width: 100%;
  max-width: none;
  margin: 0 auto;
}

.index-pro-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
}

.index-pro-link {
  display: block;
  height: 100%;
  color: inherit;
  text-decoration: none;
}

.index-pro-card {
  position: relative;
  height: 100%;
  min-height: 580px;
  overflow: hidden;
  background: url(../images/pro-bg.webp);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.index-pro-head {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 44px 32px 0;
}

.index-pro-name {
  margin: 0 0 10px;
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.index-pro-desc {
  margin: 0;
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.6;
  color: rgba(34, 30, 32, 0.62);
}

.index-pro-media {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 200px;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: visible;
  padding: 0 24px;
}

.index-pro-media img {
  display: block;
  width: auto;
  max-width: 94%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center bottom;
  transform-origin: 50% 100%;
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

.index-pro-link:hover .index-pro-media {
  z-index: 3;
}

.index-pro-link:hover .index-pro-media img {
  transform: scale(1.12);
}

/* 视频弹窗 */
.video-overlay {
  position: fixed;
  inset: 0;
  z-index: 2100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 4vw, 48px);
  background: rgba(0, 0, 0, 0.88);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition), visibility var(--transition);
}

.video-overlay.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.video-modal {
  position: relative;
  width: 100%;
  max-width: 960px;
}

.video-modal-close {
  position: absolute;
  top: -48px;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  border-radius: 50%;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  cursor: pointer;
  transition: background var(--transition);
}

.video-modal-close:hover {
  background: rgba(255, 255, 255, 0.22);
}

.video-modal-player {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 8px;
  background: #000;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
}

/* ========================================
   产品详情页第一屏
   ======================================== */

.product-hero {
  position: relative;
  width: 100%;
  height: var(--section-height);
  min-height: calc(560px - var(--header-height));
  margin-top: var(--header-height);
  overflow: hidden;
  background: #1a1a1a;
}

.product-hero-bg {
  position: absolute;
  inset: 0;
}

.product-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.product-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.55) 0%,
    rgba(0, 0, 0, 0.1) 45%,
    transparent 100%
  );
  z-index: 1;
}

.product-hero-inner {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  max-width: var(--layout-max);
  margin: 0 auto;
  padding: 0 var(--layout-gutter) 56px;
  left: 0;
  right: 0;
  text-align: center;
}

.product-hero-head {
  margin-bottom: 32px;
  width: 100%;
}

.product-hero-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
  margin-bottom: 12px;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.product-hero-subtitle {
  font-size: clamp(16px, 2.2vw, 22px);
  color: rgba(255, 255, 255, 0.92);
  letter-spacing: 1px;
}

.product-hero-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  width: 100%;
}

.product-hero-video {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: #fff;
  transition: opacity var(--transition);
}

.product-hero-video:hover {
  opacity: 0.85;
}

.product-hero-play {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.product-hero-play svg {
  display: block;
}

.product-hero-btns {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.product-hero-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 120px;
  height: 35px;
  padding: 0 32px;
  font-size: 15px;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 999px;
  background: transparent;
  transition: background var(--transition), border-color var(--transition);
}

.product-hero-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

button.product-hero-video {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
}

.product-hero .product-hero-inner {
  display: block;
  padding: 0 var(--layout-gutter) 56px;
  justify-content: unset;
  align-items: unset;
}

.product-hero .hero-content {
  width: min(94%, var(--layout-content));
}

.product-hero .hero-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
  margin-bottom: 12px;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.product-hero .hero-subtitle {
  font-size: clamp(16px, 2.2vw, 22px);
  color: rgba(255, 255, 255, 0.92);
  letter-spacing: 1px;
  margin-bottom: 28px;
}

.product-hero .product-hero-bar {
  justify-content: flex-start;
  align-items: center;
  gap: 32px;
}

.product-hero--video .product-hero-bar {
  flex-wrap: nowrap;
}

.product-hero--image .product-hero-bar {
  gap: 0;
}

.product-hero .product-hero-btns {
  margin-left: 0;
}

/* 产品详情 - CMS 全屏内容屏 */
.product-screen {
  position: relative;
  width: 100%;
  height: var(--section-height);
  min-height: calc(560px - var(--header-height));
  overflow: hidden;
  background: #1a1a1a;
}

.product-screen-media {
  position: absolute;
  inset: 0;
}

.product-screen-media img,
.product-screen-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.indexpic-media.product-screen-media--gif,
.product-screen-media.product-screen-media--gif {
  display: flex;
  align-items: center;
  justify-content: center;
}

.indexpic-media.product-screen-media--gif img,
.product-screen-media.product-screen-media--gif img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: none;
}

/* 产品详情屏：滚动文字上滑 + 遮罩（参考宇树 As2） */
.page-product .product-screen-reveal {
  position: relative;
  /* 一屏 + 约 28vh 滚动区间，够 sticky 显现即可，不做高度收拢避免跳动 */
  height: calc(var(--section-height) + 28vh);
  min-height: calc((560px - var(--header-height)) + 28vh);
  overflow: visible;
  background: #1a1a1a;
}

.page-product .product-screen-sticky {
  position: sticky;
  top: var(--header-height);
  height: var(--section-height);
  min-height: calc(560px - var(--header-height));
  overflow: hidden;
}

.page-product .product-screen-scroll-mask {
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.82) 0%,
    rgba(0, 0, 0, calc(0.28 + var(--mask-progress, 0) * 0.22)) 38%,
    rgba(0, 0, 0, calc(0.08 + var(--mask-progress, 0) * 0.1)) 72%,
    rgba(0, 0, 0, calc(0.02 + var(--mask-progress, 0) * 0.06)) 100%
  );
  opacity: calc(0.3 + var(--mask-progress, 0) * 0.7);
  transition: none;
  pointer-events: none;
}

.page-product .hero-content-reveal {
  opacity: var(--text-progress, 0);
  transform: translate3d(0, calc((1 - var(--text-progress, 0)) * 100px), 0);
  will-change: transform, opacity;
  backface-visibility: hidden;
}

.page-product .product-screen-reveal.is-revealed .hero-content-reveal {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.page-product .product-screen-reveal.is-revealed .product-screen-scroll-mask {
  opacity: 1;
}

.page-product .hero-content-reveal .hero-subtitle:last-child {
  margin-bottom: 0;
}

@media (prefers-reduced-motion: reduce) {
  .page-product .product-screen-reveal {
    height: var(--section-height);
    min-height: calc(560px - var(--header-height));
  }

  .page-product .hero-content-reveal {
    opacity: 1;
    transform: none;
  }

  .page-product .product-screen-scroll-mask {
    opacity: 0.55;
  }
}

/* 核心能力 */
.product-ability {
  position: relative;
  padding: 88px 40px;
  background: #000;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.product-ability-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.product-ability-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.product-ability-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(0, 0, 0, 0.9);
}

.product-ability-inner {
  position: relative;
  z-index: 2;
  max-width: var(--layout-content);
  margin: 0 auto;
}

.product-ability-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  margin-bottom: 12px;
  text-align: center;
}

.product-ability-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: rgba(255, 255, 255, 0.75);
  text-align: center;
  margin-bottom: 12px;
}

.product-ability-desc {
  max-width: 720px;
  margin: 0 auto 40px;
  text-align: center;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
}

.product-ability-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 56px 40px;
  margin-bottom: 48px;
}

.product-ability-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0;
}

.product-ability-item-title {
  display: block;
  margin-bottom: 18px;
  font-size: clamp(22px, 2.8vw, 34px);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, #42f0e8 0%, #5eb0ff 48%, #9a7cff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.product-ability-item-desc {
  display: block;
  font-size: clamp(14px, 1.6vw, 18px);
  color: #fff;
  line-height: 1.75;
  font-weight: 400;
}

.product-ability-metrics {
  margin-top: 8px;
}

/* 产品页 - 独立行业应用 */
.product-industry {
  padding: 88px 0 100px;
  background: #000;
}

.product-industry-inner {
  width: 100%;
  max-width: none;
  margin: 0 auto;
}

.product-industry-title {
  text-align: center;
  font-size: clamp(22px, 2.8vw, 34px);
  font-weight: 600;
  color: #fff;
  margin-bottom: 48px;
  letter-spacing: 1px;
  padding: 0 40px;
}

.product-industry-slider {
  position: relative;
}

.product-industry-stage {
  position: relative;
  padding: 0 clamp(48px, 5vw, 72px);
}

.product-industry-nav-btn {
  position: absolute;
  top: 50%;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  cursor: pointer;
  transform: translateY(-50%);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, opacity 0.2s ease;
}

.product-industry-nav-btn--prev {
  left: clamp(8px, 2vw, 16px);
}

.product-industry-nav-btn--next {
  right: clamp(8px, 2vw, 16px);
}

.product-industry-nav-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.18);
  border-color: #fff;
  color: #fff;
}

.product-industry-nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.product-industry-viewport {
  overflow: hidden;
  --pi-gap: 20px;
  --pi-cols: 3;
}

.product-industry-track {
  display: flex;
  align-items: center;
  gap: var(--pi-gap);
  transition: transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.product-industry .product-industry-card {
  flex: 0 0 calc((100vw - var(--pi-gap) * (var(--pi-cols) - 1)) / var(--pi-cols));
  width: calc((100vw - var(--pi-gap) * (var(--pi-cols) - 1)) / var(--pi-cols));
  max-width: calc((100vw - var(--pi-gap) * (var(--pi-cols) - 1)) / var(--pi-cols));
  aspect-ratio: 16 / 10;
  opacity: 0.6;
  transform: scale(0.94);
  transition: opacity 0.65s ease, transform 0.65s ease, border-radius 0.65s ease;
}

.product-industry .product-industry-card:hover {
  transform: scale(0.94);
}

.product-industry .product-industry-card.is-active {
  opacity: 1;
  transform: scale(1);
  z-index: 2;
}

.product-industry .product-industry-card.is-active:hover {
  transform: scale(1);
}

.product-industry .product-industry-card:not(.is-active) .industry-card-overlay {
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.45) 0%,
    rgba(0, 0, 0, 0.2) 45%,
    rgba(0, 0, 0, 0.08) 100%
  );
}

.product-industry .product-industry-card.is-clone {
  pointer-events: none;
}

.product-industry-dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 36px;
}

.product-industry-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.25);
  cursor: pointer;
  transition: width var(--transition), background var(--transition), opacity var(--transition);
}

.product-industry-dot.is-active {
  width: 28px;
  background: #fff;
}

.product-industry-dot:hover {
  background: rgba(255, 255, 255, 0.45);
}

/* 产品页 - 轮播详情屏（参考 key_benefit-section，与滚动详情屏并列） */
.key_benefit-section.product-screen-slider {
  padding: 88px 40px 96px;
  background: #f7f7f7;
  color: #221e20;
  overflow: hidden;
}

.product-screen-slider-inner {
  max-width: var(--layout-content);
  margin: 0 auto;
}

.product-screen-slider-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}

.product-screen-slider-tag {
  display: block;
  margin-bottom: 10px;
  font-size: clamp(16px, 1.8vw, 18px);
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.product-screen-slider-title {
  margin: 0;
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.product-screen-slider-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.product-screen-slider-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(34, 30, 32, 0.18);
  border-radius: 50%;
  background: #fff;
  color: #221e20;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), opacity var(--transition);
}

.product-screen-slider-arrow:hover:not(:disabled) {
  background: #221e20;
  border-color: #221e20;
  color: #fff;
}

.product-screen-slider-arrow:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.product-screen-slider-stage {
  position: relative;
  overflow: visible;
}

.product-screen-slider-viewport {
  overflow: visible;
  --pss-gap: 20px;
}

.product-screen-slider-track {
  display: flex;
  align-items: center;
  gap: var(--pss-gap);
  min-height: 582px;
  transition: transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.product-screen-slider-slide {
  flex: 0 0 72%;
  width: 72%;
  transform: scale(0.94);
  transition: transform 0.65s ease;
  pointer-events: none;
}

.product-screen-slider-slide.is-active {
  transform: scale(1);
  z-index: 2;
  pointer-events: auto;
}

.product-screen-slider-slide.is-clone {
  pointer-events: none;
}

.product-screen-slider-media-wrap {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 582px;
  border-radius: 4px;
  overflow: hidden;
}

.product-screen-slider-media-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  background: rgba(0, 0, 0, 0.45);
  opacity: 1;
  pointer-events: none;
  transition: opacity 0.65s ease;
}

.product-screen-slider-slide.is-active .product-screen-slider-media-wrap::after {
  opacity: 0;
}

.product-screen-slider-media {
  width: 100%;
  height: 100%;
  min-height: 582px;
}

.product-screen-slider-media img,
.product-screen-slider-media video {
  display: block;
  width: 100%;
  height: 582px;
  object-fit: cover;
  object-position: center;
  border-radius: 4px;
}

.product-screen-slider-media--video {
  position: relative;
}

.product-screen-slider-play {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0;
  padding: 0;
  border: none;
  background: none;
  color: #fff;
  cursor: pointer;
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 4px 16px rgba(0, 0, 0, 0.35));
  transition: transform var(--transition), opacity var(--transition);
}

.product-screen-slider-play:hover {
  transform: translate(-50%, -50%) scale(1.06);
}

.product-screen-slider-play.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.product-screen-slider-play svg {
  display: block;
}

.product-screen-slider-detail {
  position: absolute;
  right: 32px;
  bottom: 32px;
  z-index: 3;
  width: min(420px, calc(100% - 64px));
  min-height: 220px;
  padding: 28px 32px 32px;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.28);
  border-radius: 2px;
  color: #fff;
}

.product-screen-slider-detail-panel {
  display: none;
}

.product-screen-slider-detail-panel.is-active {
  display: block;
  animation: product-screen-slider-fade 0.45s ease;
}

@keyframes product-screen-slider-fade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.product-screen-slider-index {
  display: block;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.5);
}

.product-screen-slider-panel-title {
  margin: 0 0 16px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.35;
  color: #fff;
}

.product-screen-slider-panel-subtitle {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.78);
}

/* 产品页 - 结构热点展示（参考 vision_60-block） */
.product-vision {
  position: relative;
  padding: 88px 40px 72px;
  background-color: #0a0a0a;
  background-image: url('../images/product-vision-bg.png');
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
  color: #fff;
  overflow: hidden;
}

.product-vision::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.15) 0%,
    rgba(0, 0, 0, 0.05) 45%,
    rgba(0, 0, 0, 0.35) 100%
  );
  pointer-events: none;
}

.product-vision-inner {
  position: relative;
  z-index: 1;
  max-width: var(--layout-content);
  margin: 0 auto;
}

.product-vision-block {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  width: 100%;
  min-height: 0;
  padding-bottom: 0;
}

.product-vision-image {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 960px;
  margin-bottom: -150px;
}

.product-vision-robot {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 600px;
  margin: 0 auto;
  object-fit: contain;
}

.product-vision-circle {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.36);
  cursor: pointer;
  overflow: visible;
  transform: translate(-50%, -50%);
  transition: border-color 0.35s ease, background-color 0.35s ease, transform 0.35s ease, box-shadow 0.35s ease;
}

.product-vision-circle::after {
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.5);
  opacity: 0;
  transform: scale(0.9);
  pointer-events: none;
}

.product-vision-circle:not(.active-dot)::after {
  opacity: 1;
  animation: product-vision-ring-idle 2.6s ease-out infinite;
}

.product-vision-circle._1:not(.active-dot)::after {
  animation-delay: 0s;
}

.product-vision-circle._2:not(.active-dot)::after {
  animation-delay: 0.5s;
}

.product-vision-circle._3:not(.active-dot)::after {
  animation-delay: 1s;
}

.product-vision-circle._4:not(.active-dot)::after {
  animation-delay: 1.5s;
}

.product-vision-circle .dot_back {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  overflow: hidden;
  animation: product-vision-halo-idle 2.6s ease-in-out infinite;
}

.product-vision-circle._1 .dot_back {
  animation-delay: 0s;
}

.product-vision-circle._2 .dot_back {
  animation-delay: 0.4s;
}

.product-vision-circle._3 .dot_back {
  animation-delay: 0.8s;
}

.product-vision-circle._4 .dot_back {
  animation-delay: 1.2s;
}

.product-vision-circle .dot {
  position: relative;
  z-index: 1;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
}

.product-vision-circle:not(.active-dot) .dot {
  animation: product-vision-dot-idle 2.6s ease-in-out infinite;
}

.product-vision-circle._1:not(.active-dot) .dot {
  animation-delay: 0s;
}

.product-vision-circle._2:not(.active-dot) .dot {
  animation-delay: 0.5s;
}

.product-vision-circle._3:not(.active-dot) .dot {
  animation-delay: 1s;
}

.product-vision-circle._4:not(.active-dot) .dot {
  animation-delay: 1.5s;
}

.product-vision-circle:hover {
  border-color: #fff;
  background: rgba(0, 0, 0, 0.48);
  transform: translate(-50%, -50%) scale(1.1);
}

.product-vision-circle:not(.active-dot):hover::after {
  animation-duration: 1.4s;
}

.product-vision-circle:not(.active-dot):hover .dot_back {
  animation-duration: 1.4s;
}

.product-vision-circle:not(.active-dot):hover .dot {
  animation-duration: 1.4s;
}

.product-vision-circle.active-dot {
  border-color: #2c99c3;
  background-color: rgba(44, 153, 195, 0.2);
  box-shadow: 0 0 0 1px rgba(44, 153, 195, 0.35);
}

.product-vision-circle.active-dot::after {
  border-color: rgba(44, 153, 195, 0.75);
  opacity: 1;
  animation: product-vision-ring-pulse 2s ease-out infinite;
}

.product-vision-circle.active-dot .dot_back {
  animation: product-vision-halo-active 2s ease-in-out infinite;
}

.product-vision-circle.active-dot .dot,
.product-vision-circle .dot.active-dot {
  background-color: #2c99c3;
  animation: product-vision-dot-pulse 2s ease-in-out infinite;
}

.product-vision-circle.active-dot:hover {
  transform: translate(-50%, -50%) scale(1.06);
}

@keyframes product-vision-halo-idle {
  0%,
  100% {
    box-shadow: inset 0 0 0 12px rgba(255, 255, 255, 0.08);
  }

  50% {
    box-shadow: inset 0 0 0 22px rgba(255, 255, 255, 0.2);
  }
}

@keyframes product-vision-halo-active {
  0%,
  100% {
    box-shadow: inset 0 0 0 16px rgba(44, 153, 195, 0.16);
  }

  50% {
    box-shadow: inset 0 0 0 24px rgba(44, 153, 195, 0.28);
  }
}

@keyframes product-vision-ring-idle {
  0% {
    transform: scale(0.88);
    opacity: 0.75;
  }

  100% {
    transform: scale(1.55);
    opacity: 0;
  }
}

@keyframes product-vision-dot-idle {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.85;
  }

  50% {
    transform: scale(1.2);
    opacity: 1;
  }
}

@keyframes product-vision-ring-pulse {
  0% {
    transform: scale(0.88);
    opacity: 0.85;
  }

  100% {
    transform: scale(1.45);
    opacity: 0;
  }
}

@keyframes product-vision-dot-pulse {
  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.25);
  }
}

@media (prefers-reduced-motion: reduce) {
  .product-vision-circle .dot_back,
  .product-vision-circle::after,
  .product-vision-circle:not(.active-dot) .dot,
  .product-vision-circle.active-dot .dot,
  .product-vision-circle .dot.active-dot {
    animation: none;
  }
}

/* 热点坐标：改 top / left 百分比即可，圆心对准示意图中的点 */
.product-vision-circle._1 {
  top: 28%;
  left: 30%;
}

.product-vision-circle._2 {
  top: 34%;
  left: 57%;
}

.product-vision-circle._3 {
  top: 28%;
  left: 69%;
}

.product-vision-circle._4 {
  top: 80%;
  left: 47%;
}

.product-vision-bottom {
  position: relative;
  left: auto;
  right: auto;
  bottom: auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  width: 100%;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 0;
}

.product-vision-bottom:not(.is-active) {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
}

.product-vision-bottom.is-active {
  position: relative;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 1;
}

.product-vision-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  max-width: 364px;
  opacity: 0;
  transform: translate3d(0, 1rem, 0);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.product-vision-bottom.is-active .product-vision-left {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.product-vision-tag {
  display: inline-block;
  padding: 8px 12px;
  font-size: 14px;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.12);
}

.product-vision-title {
  margin: 0;
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 600;
  line-height: 1.25;
  color: #fff;
}

.product-vision-desc {
  margin: 0;
  font-size: clamp(16px, 1.8vw, 18px);
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.72);
}

.product-vision-parts {
  flex: 0 0 auto;
  width: 100%;
  max-width: 325px;
  height: 200px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  overflow: hidden;
  opacity: 0;
  transform: translate3d(0, 12px, 0);
  transition: opacity 0.45s ease 0.05s, transform 0.45s ease 0.05s;
}

.product-vision-bottom.is-active .product-vision-parts {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.product-vision-parts img,
.product-vision-parts .product-vision-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 产品参数表 */
.product-specs {
  padding: 72px 40px 88px;
  background: #0a1628;
  color: #fff;
}

.product-specs-inner {
  max-width: var(--layout-content);
  margin: 0 auto;
}

.product-specs-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.product-specs-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  table-layout: fixed;
}

.product-specs-table th,
.product-specs-table td {
  padding: 10px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 15px;
  line-height: 1.65;
  vertical-align: middle;
  text-align: center;
}

.product-specs-table thead th {
  padding-top: 0;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 600;
  color: #fff;
}

.product-specs-col-cat {
  width: 40px;
}

.product-specs-col-label {
  width: calc((100% - 40px) * 0.35);
}

.product-specs-col-model {
  width: calc((100% - 40px) * 0.325);
}

.product-specs-th-cat,
.product-specs-cat {
  width: 40px;
  max-width: 40px;
  min-width: 40px;
  padding: 0 !important;
  box-sizing: border-box;
  overflow: hidden;
  font-size: 0;
  line-height: 0;
}

.product-specs-th-label {
  width: calc((100% - 40px) * 0.35);
  text-align: left;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 400;
  background: transparent;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.product-specs-th-model {
  width: calc((100% - 40px) * 0.325);
}

.product-specs-group td {
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.product-specs-cat {
  position: relative;
  vertical-align: top;
  background: rgba(255, 255, 255, 0.1);
  border-left: 1px solid rgba(130, 160, 190, 0.5);
  border-right: 1px solid rgba(130, 160, 190, 0.5);
  border-bottom: 1px solid rgba(130, 160, 190, 0.5)!important;
  border-top: 1px solid rgba(130, 160, 190, 0.5)!important;
}

.product-specs-cat-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 2px;
  font-size: 15px;
  line-height: 1;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.92);
  white-space: nowrap;
  overflow: hidden;
}

.product-specs-group .product-specs-cat {
  border-top: 1px solid rgba(130, 160, 190, 0.22);
}

.product-specs-label {
  text-align: left;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 600;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.product-specs-multiline {
  line-height: 1.75;
}

.product-specs-shared {
  text-align: center;
  color: rgba(255, 255, 255, 0.92);
}

.product-specs-dot {
  display: inline-block;
  font-size: 18px;
  line-height: 1;
}

.product-specs-dot--yes {
  color: #fff;
}

.product-specs-dot--no {
  color: rgba(255, 255, 255, 0.45);
}

.product-specs-note {
  margin-top: 28px;
  text-align: center;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.42);
}

/* ===== 产品详情 PPT 改版 ===== */
/* ===== 产品详情 PPT v4 ===== */
.page-product-ppt .hero-overlay {
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.45) 0%,
    rgba(0, 0, 0, 0.2) 45%,
    rgba(0, 0, 0, 0.28) 100%
  );
}

.page-product-ppt .product-hero-bar {
  justify-content: flex-start;
  gap: 16px;
}

.page-product-ppt .product-hero-video {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 132px;
  height: 40px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  background: var(--color-accent, #235598);
  border: none;
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(35, 85, 152, 0.35);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.page-product-ppt .product-hero-video:hover {
  opacity: 1;
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(35, 85, 152, 0.42);
}

.page-product-ppt .product-hero-play {
  width: 20px;
  height: 20px;
  background: #3d2a7d;
  border-radius: 50%;
}

.page-product-ppt .product-hero-btn--ghost {
  margin-left: 0;
}

.product-feature-kicker {
  display: block;
  position: relative;
  margin: 0 0 12px;
  padding-top: 16px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--color-accent, #564396);
}

.product-feature-kicker::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 1px;
  background: #c9cdd3;
}

.product-feature-kicker--light {
  color: rgba(255, 255, 255, 0.82);
}

.product-feature-kicker--light::before {
  background: rgba(255, 255, 255, 0.45);
}

.page-product-ppt .product-feature-head--center .product-feature-kicker {
  text-align: center;
}

.page-product-ppt .product-feature-head--center .product-feature-kicker::before {
  left: 50%;
  transform: translateX(-50%);
}

/* Ghost 风格区块标题：下划线与标题同宽，副标题在线右侧 */
.page-product-ppt .product-feature-head {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  grid-template-areas:
    "kicker kicker"
    "title  ."
    "rule   subtitle";
  column-gap: clamp(16px, 2.5vw, 28px);
  row-gap: 0;
  align-items: center;
  width: 100%;
  max-width: none;
  margin: 0 0 40px;
  text-align: left;
}

.page-product-ppt .product-feature-head-lead,
.page-product-ppt .product-feature-head-aside {
  display: contents;
}

.page-product-ppt .product-feature-head > .product-feature-kicker,
.page-product-ppt .product-feature-head-lead > .product-feature-kicker {
  grid-area: kicker;
  justify-self: start;
}

.page-product-ppt .product-feature-head .product-feature-title,
.page-product-ppt .product-feature-head .product-env-title {
  grid-area: title;
  justify-self: start;
  width: max-content;
  max-width: 100%;
  margin: 0;
  color: #1a1a1a;
  text-align: left;
  text-shadow: none;
}

.page-product-ppt .product-feature-head-rule {
  grid-area: rule;
  display: block;
  box-sizing: border-box;
  width: 100%;
  max-width: none;
  min-width: 0;
  height: 1px;
  margin-top: 18px;
  background: #c9cdd3;
}

.page-product-ppt .product-feature-head .product-feature-subtitle,
.page-product-ppt .product-feature-head .product-env-desc {
  grid-area: subtitle;
  justify-self: start;
  align-self: end;
  margin: 18px 0 0;
  max-width: 480px;
  font-size: clamp(14px, 1.5vw, 16px);
  font-weight: 700;
  line-height: 1.7;
  color: #1a1a1a;
  text-align: left;
}

.page-product-ppt .product-feature-head .joint-feature-head-right {
  grid-area: subtitle;
  justify-self: end;
  align-self: end;
  margin: 18px 0 0;
  max-width: 420px;
  width: auto;
}

@media (max-width: 900px) {
  .page-product-ppt .product-feature-head {
    grid-template-columns: minmax(0, max-content);
    grid-template-areas:
      "kicker"
      "title"
      "rule"
      "subtitle";
  }

  .page-product-ppt .product-feature-head .product-feature-title,
  .page-product-ppt .product-feature-head .product-env-title {
    max-width: min(100%, 100vw - 2 * var(--layout-gutter, 20px));
  }

  .page-product-ppt .product-feature-head .product-feature-subtitle,
  .page-product-ppt .product-feature-head .product-env-desc {
    max-width: 36em;
    margin-left: 0;
    text-align: left;
  }

  .page-product-ppt .product-feature-head .joint-feature-head-right {
    justify-self: stretch;
    max-width: 36em;
    margin-left: 0;
  }

  .page-product-ppt .product-feature-head .joint-feature-head-right .product-feature-subtitle {
    text-align: left;
  }
}

.product-terrain-tabs-stage {
  position: relative;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(15, 23, 42, 0.12);
}

.product-terrain-switch {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 4;
  display: inline-flex;
  gap: 8px;
}

.product-terrain-switch-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin: 0;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: rgba(17, 24, 39, 0.42);
  color: #fff;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.product-terrain-switch-btn:hover {
  background: rgba(17, 24, 39, 0.72);
  border-color: rgba(255, 255, 255, 0.9);
}

.product-terrain-switch-btn:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.product-terrain-switch-btn:active {
  transform: scale(0.96);
}

.product-terrain-tab-media {
  border-radius: 0;
  aspect-ratio: 16 / 10;
}

.product-terrain-tab-overlay {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 2;
  max-width: min(420px, 88%);
  padding: 28px 32px;
  color: #fff;
  pointer-events: none;
}

.product-terrain-tab-overlay::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0, 0.08) 100%);
}

.product-terrain-tab-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.78);
}

.product-terrain-tab-label::before {
  content: "";
  width: 3px;
  height: 12px;
  border-radius: 2px;
  background: var(--color-accent, #235598);
}

.product-terrain-tab-title {
  margin: 0 0 8px;
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 700;
  line-height: 1.25;
  text-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}

.product-terrain-tab-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.88);
}

.product-terrain-tabs-nav {
  border: 0;
  background: #fff;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.product-terrain-tab-btn {
  display: flex;
  flex: 1 1 0;
  align-items: center;
  justify-content: center;
  min-width: 96px;
  padding: 14px 10px;
  border: 0;
  border-right: 1px solid #eef0f3;
  border-bottom: 2px solid transparent;
  background: #fff;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.product-terrain-tab-btn:last-child {
  border-right: 0;
}

.product-terrain-tab-name {
  font-size: 13px;
  color: #6b7280;
  line-height: 1.35;
  text-align: center;
}

.product-terrain-tab-btn.is-active {
  background: #f8fafc;
  border-bottom-color: var(--color-accent, #235598);
}

.product-terrain-tab-btn.is-active .product-terrain-tab-name {
  color: var(--color-accent, #235598);
}

.product-battery-compare {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 360px) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  max-width: var(--layout-content, 1360px);
  margin: 0 auto;
}

.product-battery-col-title {
  margin: 0 0 24px;
  font-size: 16px;
  font-weight: 700;
  color: #1a1a1a;
  text-align: center;
}

.product-battery-col-metrics {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.product-battery-col-metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: center;
}

.product-battery-col--single {
  justify-self: start;
  text-align: left;
}

.product-battery-col--single .product-battery-col-title,
.product-battery-col--single .product-battery-col-metric {
  text-align: left;
}

.product-battery-col--single .product-battery-col-metrics {
  align-items: flex-start;
}

.product-battery-col--dual {
  justify-self: end;
  text-align: right;
}

.product-battery-col--dual .product-battery-col-title,
.product-battery-col--dual .product-battery-col-metric {
  text-align: right;
}

.product-battery-col--dual .product-battery-col-metrics {
  align-items: flex-end;
}

.product-battery-visual {
  max-width: none;
  margin: 0;
}

.product-industry-subtitle {
  margin: -24px 0 40px;
  font-size: 16px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.72);
  text-align: center;
}

.page-product-ppt .product-env {
  height: auto;
  min-height: 0;
  padding: 80px 40px;
  background: #f3f4f6;
  display: block;
  overflow: visible;
}

.page-product-ppt .product-env-inner {
  width: 100%;
  max-width: var(--layout-content);
  margin: 0 auto;
  padding: 0;
  color: #1a1a1a;
}

.page-product-ppt .product-feature-head--env {
  margin: 0 0 40px;
}

.page-product-ppt .product-env-media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 320px;
  overflow: hidden;
  background: #111;
}

.page-product-ppt .product-env-media video,
.page-product-ppt .product-env-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-product-ppt .product-design-copy .product-feature-kicker {
  margin-bottom: 16px;
}

.page-product-ppt .product-feature-media--image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-product-ppt .product-feature-media--video {
  overflow: hidden;
}

.page-product-ppt .product-feature-media--video .product-feature-video {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
}

.page-product-ppt .product-hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 28px;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: #fff;
  transform: translateX(-50%);
  animation: productHeroScrollBounce 2s ease-in-out infinite;
}

@keyframes productHeroScrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

.product-vision--light {
  background: #f3f4f6;
  color: #1a1a1a;
}

.product-vision--design {
  padding: 88px 40px 72px;
}

.product-vision--design .product-vision-inner {
  max-width: var(--layout-content);
  margin: 0 auto;
}

.page-product-ppt .product-feature-head--design {
  margin: 0 0 36px;
}

.product-vision--light::before {
  display: none;
}

.product-vision--light .product-vision-circle {
  border-color: #fff;
  background: rgba(0, 0, 0, 0.6);
}

.product-vision--light .product-vision-circle.active-dot {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 6px rgba(37, 99, 235, 0.18);
}

.product-vision--light .product-vision-title,
.product-vision--light .product-vision-desc,
.product-vision--light .product-vision-tag {
  color: #1a1a1a;
}

.product-vision--light .product-vision-tag {
  opacity: 0.55;
}

.product-advantage {
  padding: 120px 40px 120px;
  background: #fff;
}

.product-advantage-inner {
  max-width: var(--layout-content);
  margin: 0 auto;
}

.product-advantage-head {
  margin-bottom: 56px;
  text-align: center;
}

.product-advantage-title {
  margin: 0 0 20px;
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  text-align: center;
  color: #1a1a1a;
  letter-spacing: 0.02em;
}

.product-advantage-desc {
  margin: 0 auto;
  font-size: clamp(14px, 1.6vw, 18px);
  line-height: 1.85;
  color: #4b5563;
}

.product-advantage-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.product-advantage-item {
  position: relative;
  padding: 0 24px;
  text-align: center;
}

.product-advantage-item + .product-advantage-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10%;
  width: 1px;
  height: 80%;
  background: #e5e7eb;
}

.product-advantage-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 56px;
  margin-bottom: 16px;
}

.product-advantage-icon img {
  max-width: 48px;
  max-height: 48px;
  object-fit: contain;
}

.product-advantage-item-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: #1a1a1a;
}

.product-advantage-item-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: #6b7280;
}

.product-feature {
  padding: 80px 40px;
  background: #fff;
}

.product-feature--power {
  background: #f3f4f6;
}

.page-product-ppt .product-feature--power {
  background: #f3f4f6;
}

.product-feature--terrain {
  background: #fff;
}

.product-feature--battery {
  background: #f3f4f6;
}

.product-feature-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: stretch;
  max-width: var(--layout-content);
  margin: 0 auto;
}

.product-feature-inner--reverse {
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
}

.product-feature-inner--reverse .product-feature-copy {
  order: 2;
}

.product-feature-inner--reverse .product-terrain-panel {
  order: 1;
}

.product-feature-copy {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100%;
}

.product-feature-head {
  flex-shrink: 0;
}

.product-feature-inner--battery {
  display: block;
}

.product-feature-head--center {
  text-align: center;
  margin-bottom: 40px;
}

.product-feature-title {
  margin: 0 0 16px;
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 700;
  line-height: 1.25;
  color: #1a1a1a;
}

.product-feature-subtitle {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: #6b7280;
}

.product-feature-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  align-self: center;
  width: 100%;
}

.product-feature-media--video {
  align-self: stretch;
}

.product-feature-media img,
.product-feature-media video,
.product-feature-video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-feature-play {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  display: flex;
  padding: 0;
  border: 0;
  background: transparent;
  color: #fff;
  cursor: pointer;
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 4px 16px rgba(0, 0, 0, 0.35));
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.product-feature-media--video.is-paused .product-feature-play,
.product-feature-media--video:hover .product-feature-play {
  opacity: 1;
}

.product-feature-media--video.is-playing .product-feature-play {
  opacity: 0;
  pointer-events: none;
}

.product-terrain-panel {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.product-metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px 40px;
  margin: 48px 0 0;
  padding: 0;
  list-style: none;
}

.product-feature--terrain .product-metric-grid {
  margin-top: auto;
  padding-top: 48px;
}

.product-metric-grid--inline {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px 24px;
}

.product-metric-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.product-metric-value {
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-accent);
}

.product-metric-label {
  font-size: 14px;
  line-height: 1.5;
  color: #4b5563;
}

.product-battery-body {
  position: relative;
  min-height: 420px;
}

.product-battery-metrics {
  position: absolute;
  left: 0;
  top: 50%;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin: 0;
  padding: 0;
  list-style: none;
  transform: translateY(-50%);
}

.product-battery-visual {
  display: flex;
  justify-content: center;
  max-width: 520px;
  margin: 0 auto;
}

.product-battery-visual img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.product-battery-features {
  position: absolute;
  right: 0;
  top: 50%;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin: 0;
  padding: 0;
  list-style: none;
  transform: translateY(-50%);
}

.product-battery-feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #4b5563;
  text-align: center;
}

.product-battery-feature-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.product-env {
  position: relative;
  padding: 80px 40px;
  overflow: visible;
  background: #f3f4f6;
}

.product-env-stage {
  position: relative;
  width: 100%;
}

.product-env-tabs {
  position: absolute;
  top: 20px;
  left: 50%;
  z-index: 3;
  display: inline-flex;
  align-items: stretch;
  transform: translateX(-50%);
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.12);
  overflow: hidden;
}

.product-env-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin: 0;
  padding: 0;
  border: 0;
  border-right: 1px solid rgba(255, 255, 255, 0.35);
  background: transparent;
  cursor: pointer;
  transition: background 0.22s ease;
}

.product-env-tab:last-child {
  border-right: 0;
}

.product-env-tab-icon {
  display: block;
  width: 34px;
  height: 34px;
  object-fit: contain;
  filter: brightness(0) saturate(100%) opacity(0.72);
  transition: filter 0.22s ease;
}

.product-env-tab.is-active {
  background: #1f2937;
}

.product-env-tab.is-active .product-env-tab-icon {
  filter: brightness(0) invert(1);
}

.product-env-tab:focus-visible {
  outline: 2px solid var(--color-accent, #564396);
  outline-offset: -2px;
}

.product-env-panels {
  position: relative;
  width: 100%;
}

.product-env-panel {
  display: none;
}

.product-env-panel.is-active,
.product-env-panel.is-active[hidden] {
  display: block;
}

.product-env-panel[hidden] {
  display: none !important;
}

.product-env-media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 280px;
  overflow: hidden;
  background: #111;
}

.product-env-media video,
.product-env-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-env-inner {
  position: relative;
  z-index: 1;
  max-width: var(--layout-content);
  margin: 0 auto;
  padding: 0;
  text-align: left;
  color: #1a1a1a;
}

.product-env-title {
  margin: 0 0 12px;
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 700;
  color: #1a1a1a;
}

.product-env-desc {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: #6b7280;
}

.product-terrain-tabs {
  padding: 0;
  background: transparent;
}

.product-terrain-tabs-inner {
  max-width: none;
  margin: 0;
}

.product-terrain-tabs-stage {
  position: relative;
  flex: 1 1 auto;
  margin-bottom: 0;
}

.product-terrain-tab-panel {
  display: none;
  height: 100%;
}

.product-terrain-tab-panel.is-active {
  display: block;
}

.product-terrain-tab-media {
  position: relative;
  overflow: hidden;
  background: #eceff3;
  aspect-ratio: 16 / 9.5;
}

.product-terrain-tab-media img,
.product-terrain-tab-media video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-terrain-tab-play {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  display: flex;
  padding: 0;
  border: 0;
  background: transparent;
  color: #fff;
  cursor: pointer;
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 4px 16px rgba(0, 0, 0, 0.35));
  transition: opacity 0.3s ease;
}

.product-terrain-tab-media--video.is-paused .product-terrain-tab-play,
.product-terrain-tab-media--video:hover .product-terrain-tab-play {
  opacity: 1;
}

.product-terrain-tab-media--video:not(.is-paused) .product-terrain-tab-play {
  opacity: 0;
}

.product-terrain-tabs-nav {
  display: flex;
  flex-wrap: nowrap;
  justify-content: stretch;
  gap: 0;
  margin-top: 0;
  border: 1px solid #e8eaed;
  border-top: 0;
  background: #fff;
  overflow: hidden;
}

.product-terrain-tab-btn {
  flex: 1 1 0;
  min-width: 0;
  padding: 16px 8px;
  border: 0;
  border-right: 1px solid #e8eaed;
  background: #fff;
  font-size: 14px;
  color: #6b7280;
  cursor: pointer;
  transition: color 0.2s ease, box-shadow 0.2s ease;
}

.product-terrain-tab-btn:last-child {
  border-right: 0;
}

.product-terrain-tab-btn.is-active {
  color: var(--color-accent);
  box-shadow: inset 0 -2px 0 var(--color-accent);
}

.product-design {
  padding: 72px 40px;
  background: #fff;
}

.product-design-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 40px;
  align-items: center;
  max-width: var(--layout-content);
  margin: 0 auto;
}

.product-design-title {
  margin: 0 0 20px;
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 700;
  color: #1a1a1a;
}

.product-design-desc {
  font-size: 16px;
  line-height: 1.9;
  color: #4b5563;
}

.product-design-media {
  border-radius: 12px;
  overflow: hidden;
  background: #f3f4f6;
}

.product-design-media img {
  display: block;
  width: 100%;
  height: auto;
}

.product-industry--ppt {
  background: #0a0a0a;
}

.product-industry--ppt .product-industry-title {
  color: #fff;
}

.product-specs--ppt {
  background: #fff;
  color: #1a1a1a;
  padding: 72px 40px 88px;
}

.product-specs--ppt .product-specs-inner {
  max-width: var(--layout-content);
}

.product-specs--ppt .product-specs-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}

.product-specs--ppt .product-specs-title {
  margin: 0;
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  color: #1a1a1a;
}

.product-specs-tabs {
  display: flex;
  gap: 28px;
}

.product-specs-tab {
  padding: 8px 4px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  font-size: 16px;
  color: #6b7280;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.product-specs-tab.is-active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.product-specs-panel {
  display: none;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 40px;
  align-items: start;
}

.product-specs-panel.is-active {
  display: grid;
}

.product-specs-grid-wrap {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px 24px;
}

.product-specs-group-title {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid #e5e7eb;
  font-size: 15px;
  font-weight: 700;
  color: #1a1a1a;
}

.product-specs-group-list {
  margin: 0;
}

.product-specs-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  margin-bottom: 14px;
}

.product-specs-row dt {
  margin: 0;
  font-size: 13px;
  color: #9ca3af;
  font-weight: 400;
}

.product-specs-row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: #1a1a1a;
}

.product-specs-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
}

.product-specs-visual img {
  max-width: 100%;
  max-height: 480px;
  object-fit: contain;
}

.product-specs--ppt .product-specs-note {
  color: #9ca3af;
}

/* 产品详情底部横幅 */
.product-cta-banner {
  position: relative;
  width: 100%;
  margin: 0 0 0;
  padding: 0;
  overflow: hidden;
}

.product-cta-banner-bg {
  position: absolute;
  inset: 0;
  border-radius: 0;
  overflow: hidden;
  background-color: #e8f0f8;
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72) 0%, rgba(232, 240, 248, 0.2) 42%, rgba(210, 224, 240, 0.55) 100%),
    radial-gradient(ellipse 120% 80% at 50% 100%, rgba(160, 185, 215, 0.45) 0%, transparent 58%),
    radial-gradient(ellipse 90% 55% at 18% 88%, rgba(180, 200, 225, 0.35) 0%, transparent 50%),
    radial-gradient(ellipse 85% 50% at 82% 92%, rgba(170, 195, 220, 0.32) 0%, transparent 48%),
    linear-gradient(180deg, #f5f8fc 0%, #e8f0f8 55%, #dde8f2 100%);
}

.product-cta-banner-bg::after {
  display: none;
}

.product-cta-banner-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  padding: 72px 40px;
  text-align: center;
}

.product-cta-banner-kicker {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 1px;
  color: #7a8aa0;
}

.product-cta-banner-title {
  margin: 0 0 28px;
  max-width: 860px;
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 700;
  line-height: 1.45;
  color: #1a2b4a;
}

.product-cta-banner-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 148px;
  height: 44px;
  padding: 0 28px;
  border-radius: 999px;
  background: var(--color-accent, #235598);
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  box-shadow: 0 10px 28px rgba(35, 85, 152, 0.28);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.product-cta-banner-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 32px rgba(35, 85, 152, 0.36);
  color: #fff;
}

.product-cta-banner-btn span {
  font-size: 16px;
  line-height: 1;
}

@media (max-width: 768px) {
  .product-cta-banner-inner {
    min-height: 240px;
    padding: 48px 20px;
  }

  .product-cta-banner-title {
    margin-bottom: 22px;
    font-size: 20px;
  }
}

@media (max-width: 768px) {
  .page-product-ppt .product-feature {
    padding: 56px 20px;
  }

  .page-product-ppt .product-feature-inner,
  .page-product-ppt .product-feature-inner--reverse {
    grid-template-columns: 1fr;
  }

  .page-product-ppt .product-feature-inner--terrain {
    display: block;
  }

  .page-product-ppt .product-feature-inner--reverse .product-feature-copy,
  .page-product-ppt .product-feature-inner--reverse .product-terrain-panel {
    order: unset;
  }

  .page-product-ppt .product-feature-head--terrain {
    margin-bottom: 24px;
  }

  .page-product-ppt .product-metric-grid--inline {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1024px) {
  .product-advantage-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 16px;
  }

  .product-advantage-item + .product-advantage-item::before {
    display: none;
  }

  .product-design-inner,
  .product-specs-panel.is-active {
    grid-template-columns: 1fr;
  }

  .product-metric-grid--inline {
    grid-template-columns: 1fr;
  }

  .page-product-ppt .product-power-body {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .page-product-ppt .product-metric-grid--power {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-product-ppt .product-feature-head--power {
    margin-bottom: 28px;
  }

  .page-product-ppt .product-env {
    padding: 56px 20px;
  }

  .page-product-ppt .product-env-inner {
    padding: 0;
  }

  .page-product-ppt .product-feature-head--env {
    margin-bottom: 28px;
  }

  .product-env-tabs {
    top: 12px;
  }

  .product-env-tab {
    width: 52px;
    height: 52px;
  }

  .product-env-tab-icon {
    width: 28px;
    height: 28px;
  }

  .page-product-ppt .product-feature--battery {
    padding: 64px 20px 72px;
  }

  .product-vision--design {
    padding: 64px 20px 56px;
  }

  .page-product-ppt .product-feature-head--design {
    margin-bottom: 12px;
  }

  .page-product-ppt .product-feature-head--battery {
    margin-bottom: 32px;
  }

  .page-product-ppt .product-battery-compare {
    display: flex;
    flex-direction: column;
    gap: 28px;
    min-height: 0;
    padding: 0;
  }

  .page-product-ppt .product-battery-col {
    position: static;
    top: auto;
    left: auto;
    right: auto;
    width: 100%;
    max-width: none;
    transform: none;
  }

  .page-product-ppt .product-battery-visual {
    order: -1;
    padding: 0;
    min-height: 0;
  }

  .page-product-ppt .product-battery-visual img {
    max-width: 320px;
  }

  .page-product-ppt .product-battery-col--single .product-battery-col-title,
  .page-product-ppt .product-battery-col--single .product-battery-col-metric,
  .page-product-ppt .product-battery-col--dual .product-battery-col-title,
  .page-product-ppt .product-battery-col--dual .product-battery-col-metric {
    text-align: center;
  }

  .page-product-ppt .product-battery-col--single,
  .page-product-ppt .product-battery-col--dual {
    text-align: center;
  }

  .page-product-ppt .product-battery-col--single .product-battery-col-metrics,
  .page-product-ppt .product-battery-col--dual .product-battery-col-metrics {
    align-items: center;
  }

  .page-product-ppt .product-battery-col-metrics {
    gap: 24px;
  }

  .page-product-ppt .product-battery-col-metric .product-metric-value {
    font-size: 28px;
  }

  .product-battery-compare {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .product-battery-col--single .product-battery-col-title,
  .product-battery-col--single .product-battery-col-metric,
  .product-battery-col--dual .product-battery-col-title,
  .product-battery-col--dual .product-battery-col-metric {
    text-align: center;
  }

  .product-battery-col--single,
  .product-battery-col--dual {
    justify-self: center;
    text-align: center;
  }

  .product-battery-col--single .product-battery-col-metrics,
  .product-battery-col--dual .product-battery-col-metrics {
    align-items: center;
  }

  .product-battery-visual {
    order: -1;
  }

  .product-terrain-tab-overlay {
    padding: 18px 20px;
  }

  .product-terrain-switch {
    top: 12px;
    right: 12px;
    gap: 6px;
  }

  .product-terrain-switch-btn {
    width: 36px;
    height: 36px;
  }

  .product-terrain-tab-btn {
    min-width: 84px;
    padding: 12px 8px;
  }

  .product-industry-subtitle {
    margin-top: -12px;
    margin-bottom: 28px;
  }

  .product-battery-body {
    min-height: 0;
  }

  .product-battery-metrics,
  .product-battery-features {
    position: static;
    transform: none;
    margin-bottom: 24px;
  }

  .product-battery-features {
    flex-direction: row;
    justify-content: center;
    gap: 32px;
  }

  .product-specs-grid-wrap {
    grid-template-columns: 1fr 1fr;
  }

  .product-specs--ppt .product-specs-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .product-terrain-tab-btn {
    font-size: 13px;
    padding: 14px 8px;
  }
}

@media (max-width: 640px) {
  .product-advantage,
  .product-feature,
  .product-terrain-tabs,
  .product-design,
  .product-specs--ppt {
    padding-left: 20px;
    padding-right: 20px;
  }

  .product-advantage-grid {
    grid-template-columns: 1fr;
  }

  .product-advantage-head {
    margin-bottom: 40px;
  }

  .product-advantage-desc {
    text-align: left;
  }

  .product-metric-grid {
    grid-template-columns: 1fr;
  }

  .product-specs-grid-wrap {
    grid-template-columns: 1fr;
  }

  .product-terrain-tabs-nav {
    flex-wrap: wrap;
  }

  .product-terrain-tab-btn {
    flex: 1 1 33.33%;
    border-bottom: 1px solid #e5e7eb;
  }
}

/* 产品详情第二屏 */
.product-showcase {
  position: relative;
  width: 100%;
  height: var(--section-height);
  min-height: calc(560px - var(--header-height));
  overflow: hidden;
  background: #0a0e14;
}

.product-showcase-bg {
  position: absolute;
  inset: 0;
}

.product-showcase-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.product-showcase-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.72) 0%,
    rgba(0, 0, 0, 0.35) 38%,
    rgba(0, 0, 0, 0.05) 65%,
    transparent 100%
  );
  z-index: 1;
}

.product-showcase-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  height: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px;
}

.product-showcase-content {
  max-width: 520px;
}

.product-showcase-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
  margin-bottom: 16px;
  line-height: 1.2;
}

.product-showcase-subtitle {
  font-size: clamp(16px, 2.2vw, 22px);
  color: rgba(255, 255, 255, 0.92);
  letter-spacing: 1px;
  margin-bottom: 40px;
  line-height: 1.5;
}

.product-showcase-btns {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* 产品详情第三屏 */
.product-feature {
  position: relative;
  width: 100%;
  height: var(--section-height);
  min-height: calc(560px - var(--header-height));
  overflow: hidden;
  background: #1a1a1a;
}

.product-feature-bg {
  position: absolute;
  inset: 0;
}

.product-feature-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.product-feature-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.35) 0%,
    rgba(0, 0, 0, 0.08) 35%,
    transparent 55%
  );
  z-index: 1;
}

.product-feature-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  padding: clamp(48px, 10vh, 96px) 40px 0;
}

.product-feature-title {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
  margin-bottom: 20px;
  line-height: 1.3;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.product-feature-desc {
  font-size: clamp(14px, 1.8vw, 18px);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.75;
  letter-spacing: 0.5px;
}

.product-feature-desc sup {
  font-size: 0.75em;
  opacity: 0.85;
}

/* PPT 产品详情：覆盖上方旧版 .product-feature 全屏单列样式，恢复左右分栏 */
.page-product-ppt .product-feature {
  position: relative;
  width: 100%;
  height: auto;
  min-height: 0;
  overflow: visible;
  background: #fff;
  padding: 80px 40px;
}

.page-product-ppt .product-feature--power {
  background: #f3f4f6;
}

.page-product-ppt .product-feature-inner.product-feature-inner--power {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  grid-template-columns: none;
  gap: 0;
  max-width: var(--layout-content);
}

.page-product-ppt .product-feature-head--power {
  margin: 0 0 40px;
}

.page-product-ppt .product-power-body {
  display: grid;
  grid-template-columns: minmax(220px, 420px) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.page-product-ppt .product-power-copy {
  display: flex;
  flex-direction: column;
  gap: 36px;
  min-width: 0;
}

.page-product-ppt .product-power-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: #111827;
}

.page-product-ppt .product-metric-grid--power {
  grid-template-columns: 1fr;
  gap: 32px;
  margin: 0;
}

.page-product-ppt .product-metric-grid--power .product-metric-value {
  font-size: clamp(28px, 3vw, 40px);
  color: #111827;
}

.page-product-ppt .product-metric-grid--power .product-metric-label {
  font-size: 14px;
  color: #6b7280;
}

.page-product-ppt .product-feature--power .product-feature-media {
  min-height: 320px;
  overflow: hidden;
}

.page-product-ppt .product-feature--battery {
  background: #fff;
  padding: 88px 40px 100px;
}

.page-product-ppt .product-feature-inner--battery {
  display: block;
  max-width: var(--layout-content);
  margin: 0 auto;
  grid-template-columns: none;
}

.page-product-ppt .product-feature-head--battery {
  margin: 0 0 48px;
}

.page-product-ppt .product-battery-compare {
  position: relative;
  display: block;
  width: 100%;
  max-width: var(--layout-content, 1360px);
  margin: 0 auto;
  min-height: 420px;
  padding: 0;
}

.page-product-ppt .product-battery-col {
  position: absolute;
  top: 50%;
  z-index: 2;
  width: max-content;
  max-width: min(280px, 28%);
  transform: translateY(-50%);
}

.page-product-ppt .product-battery-col--single {
  left: 0;
  right: auto;
  text-align: left;
}

.page-product-ppt .product-battery-col--dual {
  left: auto;
  right: 0;
  text-align: right;
}

.page-product-ppt .product-battery-col-title {
  margin: 0 0 28px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: #374151;
}

.page-product-ppt .product-battery-col-metrics {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-product-ppt .product-battery-col-metric {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-product-ppt .product-battery-col-metric .product-metric-value {
  font-size: clamp(32px, 3.4vw, 44px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #111827;
}

.page-product-ppt .product-battery-col-metric .product-metric-label {
  font-size: 14px;
  line-height: 1.5;
  color: #6b7280;
}

.page-product-ppt .product-battery-col--single .product-battery-col-title,
.page-product-ppt .product-battery-col--single .product-battery-col-metric {
  text-align: left;
}

.page-product-ppt .product-battery-col--single .product-battery-col-metrics {
  align-items: flex-start;
}

.page-product-ppt .product-battery-col--dual .product-battery-col-title,
.page-product-ppt .product-battery-col--dual .product-battery-col-metric {
  text-align: right;
}

.page-product-ppt .product-battery-col--dual .product-battery-col-metrics {
  align-items: flex-end;
}

.page-product-ppt .product-battery-visual {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0 280px;
  min-height: 420px;
}

.page-product-ppt .product-battery-visual::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 55%;
  width: 72%;
  height: 42%;
  transform: translate(-50%, -50%);
  background: radial-gradient(ellipse at center, rgba(35, 85, 152, 0.14) 0%, transparent 70%);
  pointer-events: none;
}

.page-product-ppt .product-battery-visual img {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 600px;
  height: auto;
  object-fit: contain;
}

.page-product-ppt .product-feature-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  flex-direction: unset;
  align-items: stretch;
  align-content: stretch;
  text-align: left;
  gap: clamp(32px, 5vw, 72px);
  max-width: var(--layout-content);
  margin: 0 auto;
  padding: 0;
}

/* 长续航：强制标题在上、对比内容在下，避免被上方两列 grid 覆盖 */
.page-product-ppt .product-feature-inner.product-feature-inner--battery {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  grid-template-columns: none;
  gap: 0;
  max-width: var(--layout-content);
}

.page-product-ppt .product-feature-inner--terrain {
  display: block;
  max-width: var(--layout-content);
  margin: 0 auto;
}

.page-product-ppt .product-feature-head--terrain {
  margin: 0 0 36px;
}

.page-product-ppt .product-feature--terrain .product-terrain-panel {
  display: block;
  width: 100%;
}

.page-product-ppt .product-feature--terrain .product-terrain-tab-media {
  aspect-ratio: 16 / 9;
}

.page-product-ppt .product-feature--terrain .product-terrain-tabs-nav {
  border: 1px solid #e8eaed;
  border-top: 0;
}

.page-product-ppt .product-feature-inner--reverse {
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
}

.page-product-ppt .product-feature-inner--reverse .product-feature-copy {
  order: 2;
}

.page-product-ppt .product-feature-inner--reverse .product-terrain-panel {
  order: 1;
}

.page-product-ppt .product-feature-copy {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100%;
}

.page-product-ppt .product-feature-title {
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 700;
  color: #1a1a1a;
  letter-spacing: normal;
  margin: 0 0 16px;
  line-height: 1.25;
  text-shadow: none;
}

.page-product-ppt .product-feature-subtitle {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: #6b7280;
}

.page-product-ppt .product-feature-media {
  align-self: stretch;
  width: 100%;
}

.page-product-ppt .product-terrain-panel {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.page-product-ppt .product-feature--terrain .product-terrain-panel {
  display: block;
  width: 100%;
  min-height: 0;
}

/* 产品详情第四屏 */
.product-motion {
  width: 100%;
  height: var(--section-height);
  min-height: calc(560px - var(--header-height));
  background: linear-gradient(135deg, #f3f3f5 0%, #fafafa 50%, #f0f0f2 100%);
  overflow: hidden;
}

.product-motion-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 40px;
  max-width: 1440px;
  height: 100%;
  margin: 0 auto;
  padding: 0 40px;
}

.product-motion-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 0;
}

.product-motion-visual img {
  width: 100%;
  max-height: 90%;
  object-fit: contain;
  object-position: center;
}

.product-motion-content {
  padding: 24px 0;
}

.product-motion-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: 8px;
}

.product-motion-subtitle {
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: 20px;
}

.product-motion-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 480px;
}

.product-spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 32px;
  max-width: 560px;
}

.product-spec-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.product-spec-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  color: #888;
}

.product-spec-icon svg {
  width: 100%;
  height: 100%;
}

.product-spec-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.product-spec-text strong {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.product-spec-text span {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.45;
}

/* 产品页侧边浮动按钮 */
.product-float-tools {
  position: fixed;
  right: 24px;
  bottom: 80px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.product-float-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #fff;
  color: var(--color-accent);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  transition: box-shadow var(--transition), transform var(--transition);
}

.product-float-btn:hover {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.16);
  transform: translateY(-2px);
}

/* 产品详情第五屏 */
.product-power {
  position: relative;
  width: 100%;
  height: var(--section-height);
  min-height: calc(560px - var(--header-height));
  overflow: hidden;
  background: #0a0a0a;
}

.product-power-bg {
  position: absolute;
  inset: 0;
}

.product-power-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
  filter: grayscale(0.85) brightness(0.55);
}

.product-power-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.92) 0%,
    rgba(0, 0, 0, 0.65) 45%,
    rgba(0, 0, 0, 0.25) 100%
  );
  z-index: 1;
}

.product-power-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  max-width: var(--layout-max);
  margin: 0 auto;
  padding: clamp(48px, 8vh, 88px) var(--layout-gutter) clamp(40px, 6vh, 72px);
  text-align: center;
}

.product-power-head {
  flex-shrink: 0;
}

.product-power-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 12px;
  line-height: 1.2;
}

.product-power-subtitle {
  font-size: clamp(18px, 2.5vw, 26px);
  font-weight: 500;
  letter-spacing: 4px;
}

.product-power-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(28px, 4vh, 48px) 24px;
  width: 100%;
}

.product-power-item h3 {
  font-size: clamp(16px, 1.8vw, 20px);
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.4;
}

.product-power-item p {
  font-size: clamp(13px, 1.4vw, 15px);
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.65;
}

.product-power-item p sup {
  font-size: 0.75em;
  opacity: 0.8;
}

/* 产品详情第六屏：视频 */
.product-video {
  position: relative;
  width: 100%;
  height: var(--section-height);
  min-height: calc(560px - var(--header-height));
  background: #0f0f0f;
  overflow: hidden;
}

.product-video-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(28px, 4vh, 48px);
  height: 100%;
  max-width: var(--layout-max);
  margin: 0 auto;
  padding: clamp(40px, 6vh, 72px) var(--layout-gutter);
  text-align: center;
}

.product-video-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 10px;
  line-height: 1.2;
}

.product-video-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 2px;
}

.product-video-player {
  width: 100%;
  max-width: 960px;
}

.product-video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 8px;
  overflow: hidden;
  background: #1a1a1a;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
}

.product-video-poster {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.55);
}

.product-video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.15) 0%,
    rgba(0, 0, 0, 0.35) 100%
  );
}

.product-video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border: none;
  border-radius: 50%;
  color: #fff;
  background: rgba(0, 0, 0, 0.45);
  cursor: not-allowed;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.85);
}

.product-video-play::before {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  padding: 3px;
  background: var(--brand-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.product-video-badge {
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 6px 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  backdrop-filter: blur(8px);
}

.product-video-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail-content {
  padding: 64px 40px 96px;
  background: #fff;
}

.product-detail-content-inner {
  max-width: 960px;
  margin: 0 auto;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.product-detail-content-inner img {
  max-width: 100%;
  height: auto;
}

.page-placeholder {
  min-height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 18px;
  background: #fff;
}

/* ========================================
   行业应用板块（横向手风琴）
   ======================================== */

.industry-section {
  background: #fff;
  padding: 0 10px;
  overflow: hidden;
}

.industry-inner {
  width: 100%;
  max-width: none;
  margin: 0 auto;
}

.industry-heading {
  text-align: center;
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.65;
  letter-spacing: 1px;
  margin-bottom: 56px;
}

.industry-accordion {
  display: flex;
  align-items: stretch;
  gap: 10px;
  height: clamp(560px, 68vh, 720px);
  width: 100%;
}

.industry-panel {
  position: relative;
  flex: 0.85 1 0;
  min-width: 96px;
  overflow: hidden;
  display: block;
  color: #fff;
  text-decoration: none;
  isolation: isolate;
  transition: flex 0.55s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.4s ease;
  will-change: flex;
}

.industry-panel.is-active {
  flex: 3.6 1 0;
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.18);
  z-index: 2;
}

.industry-panel-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.08);
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              filter 0.45s ease;
  filter: saturate(0.92) brightness(0.88);
}

.industry-panel.is-active .industry-panel-bg {
  transform: scale(1);
  filter: saturate(1.05) brightness(1);
}

.industry-panel-shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    180deg,
    rgba(8, 12, 24, 0.18) 0%,
    rgba(8, 12, 24, 0.28) 42%,
    rgba(8, 12, 24, 0.72) 100%
  );
  transition: background 0.45s ease;
  pointer-events: none;
}

.industry-panel.is-active .industry-panel-shade {
  background: linear-gradient(
    105deg,
    rgba(8, 12, 24, 0.78) 0%,
    rgba(8, 12, 24, 0.42) 42%,
    rgba(8, 12, 24, 0.18) 100%
  );
}

.industry-panel-collapsed {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 56px;
  padding: 28px 10px;
  opacity: 1;
  transform: none;
  transition: opacity 0.28s ease, transform 0.35s ease;
}

.industry-panel.is-active .industry-panel-collapsed {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.96);
}

.industry-panel-vtitle {
  writing-mode: horizontal-tb;
  text-orientation: mixed;
  font-size: 20px;
  letter-spacing: 0.12em;
  color: #fff;
  white-space: nowrap;
  line-height: 1.2;
  transform: none;
}

.industry-panel-icon {
  display: block;
  width: 42px;
  height: 42px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.industry-panel-icon--lg {
  width: 48px;
  height: 48px;
  margin-bottom: 4px;
}

.industry-panel-expanded {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  max-width: min(420px, 88%);
  padding: 40px 36px 44px;
  opacity: 0;
  transform: translateY(18px);
  pointer-events: none;
  transition: opacity 0.35s ease 0.08s, transform 0.45s cubic-bezier(0.22, 1, 0.36, 1) 0.05s;
}

.industry-panel.is-active .industry-panel-expanded {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.industry-panel-title {
  font-size: clamp(26px, 2.8vw, 36px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.04em;
  color: #fff;
}

.industry-panel-desc {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.88);
}

.industry-panel-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 8px;
  padding: 10px 28px;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: #fff;
  background: transparent;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.industry-panel.is-active:hover .industry-panel-cta {
  background: #fff;
  color: #111827;
  border-color: #fff;
}

/* 兼容旧类名（产品页等仍在用） */
.industry-slider {
  position: relative;
}

.industry-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.industry-slider.is-carousel .industry-track {
  display: flex;
  gap: 20px;
  transition: transform 0.5s ease;
  will-change: transform;
}

.industry-slider.is-carousel .industry-card {
  flex: 0 0 calc((100% - 60px) / 4);
  min-width: 0;
}

.industry-card {
  position: relative;
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  min-width: 0;
  transition: transform var(--transition);
}

.industry-card:hover {
  transform: translateY(-4px);
}

.industry-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.industry-card:hover img {
  transform: scale(1.05);
}

.industry-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.75) 0%,
    rgba(0, 0, 0, 0.25) 35%,
    transparent 65%
  );
  pointer-events: none;
}

.industry-card-caption {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.industry-card-title {
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 600;
  color: #fff;
  letter-spacing: 1px;
  line-height: 1.3;
}

.industry-card-subtitle {
  font-size: clamp(13px, 1.4vw, 15px);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.45;
  letter-spacing: 0.3px;
}

.industry-controls {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
}

.industry-controls[hidden],
.industry-slider:not(.is-carousel) .industry-controls {
  display: none !important;
}

.industry-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.12);
  color: var(--color-text);
  background: #fff;
  transition: background var(--transition), border-color var(--transition);
}

.industry-arrow:hover {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.25);
}

.industry-arrow:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ========================================
   新闻中心（参考宇树）
   ======================================== */

.news-section {
  background: #f5f5f5;
  padding: 72px 40px 80px;
}

.news-inner {
  max-width: 1440px;
  margin: 0 auto;
}

.news-section-title {
  text-align: center;
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 1px;
  margin-bottom: 48px;
}

.news-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  align-items: stretch;
}

/* 左侧主推 */
.news-featured {
  position: relative;
  display: block;
  min-height: 420px;
  overflow: hidden;
  background: #1a1a1a;
}

.news-featured > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease;
}

.news-featured:hover > img {
  transform: scale(1.03);
}

.news-featured-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.65) 0%,
    rgba(0, 0, 0, 0.15) 50%,
    transparent 100%
  );
  z-index: 1;
}

.news-featured-body {
  position: absolute;
  left: 32px;
  bottom: 32px;
  z-index: 2;
  max-width: 420px;
}

.news-featured-label {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 8px;
}

.news-featured-desc {
  font-size: 15px;
  color: #fff;
  line-height: 1.6;
  margin-bottom: 20px;
}

.news-featured-btn {
  display: inline-block;
  padding: 10px 28px;
  background: #fff;
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  border-radius: 4px;
  transition: background var(--transition), color var(--transition);
}

.news-featured:hover .news-featured-btn {
  background: #f0f0f0;
}

/* 右侧列表 */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
}

.news-item {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background: #fff;
  min-height: 0;
  transition: box-shadow var(--transition);
}

.news-item:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.news-item-thumb {
  flex-shrink: 0;
  width: 150px;
  height: 110px;
  overflow: hidden;
  background: #eee;
}

.news-item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-item-body {
  flex: 1;
  min-width: 0;
}

.news-item-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item-desc {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.news-item-date {
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text-light, #9ca3af);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.news-item-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 400;
  color: var(--color-accent);
  letter-spacing: 0.02em;
  margin-left: auto;
  transition: color var(--transition);
}

.news-item-more svg {
  flex-shrink: 0;
  transition: transform var(--transition);
}

.news-item:hover .news-item-more {
  color: var(--color-primary-hover);
}

.news-item:hover .news-item-more svg {
  transform: translateX(3px);
}

/* ========================================
   合作伙伴（参考云深处 + 宇树）
   ======================================== */

.partners-section {
  background: #fff;
  padding: 72px 40px 80px;
  border-top: 1px solid #eee;
}

.partners-inner {
  max-width: var(--layout-max);
  margin: 0 auto;
}

.partners-title {
  text-align: center;
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 1px;
  margin-bottom: 48px;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px 40px;
}

.partners-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 88px;
  padding: 16px 10px;
}

.partners-item img {
  max-width: 100%;
  max-height: 80px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.55;
  transition: filter var(--transition), opacity var(--transition), transform var(--transition);
}

.partners-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.05);
}

/* ========================================
   Footer（云深处 + 宇树）
   ======================================== */

.site-footer {
  background: #0c0e12;
  color: rgba(255, 255, 255, 0.75);
  overflow: visible;
}

.footer-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px;
}

/* 主链接区 */
.footer-brand {
  overflow: visible;
}

.footer-main {
  padding: 56px 0 48px;
  overflow: visible;
}

.footer-main-inner {
  display: grid;
  grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  margin-bottom: 24px;
}

.footer-logo-img {
  display: block;
  width: auto;
  height: 40px;
  max-width: 180px;
  object-fit: contain;
  filter: brightness(1.05);
}

.footer-contact-list {
  margin-bottom: 28px;
}

.footer-contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.5;
  margin-bottom: 12px;
}

.footer-contact-list li:last-child {
  margin-bottom: 0;
}

.footer-contact-list li svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: rgba(255, 255, 255, 0.35);
}

.footer-social-label {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 14px;
}

.footer-social-links {
  display: flex;
  gap: 12px;
}

.footer-social-item {
  position: relative;
}

.footer-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: transparent;
  transition: border-color var(--transition), background var(--transition);
}

.footer-social-icon {
  width: 20px;
  height: 20px;
  display: block;
  flex-shrink: 0;
  opacity: 0.85;
  transition: opacity var(--transition);
}

.footer-social-icon--xhs {
  width: 24px;
  object-fit: contain;
}

.footer-social-link:hover,
.footer-social-item.is-open .footer-social-link {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.06);
}

.footer-social-link:hover .footer-social-icon,
.footer-social-item.is-open .footer-social-icon {
  opacity: 1;
}

.footer-qr-popup {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 12px);
  transform: translateX(-50%) translateY(8px);
  width: 156px;
  padding: 8px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 20;
  line-height: 0;
  box-sizing: border-box;
}

.footer-qr-popup::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  transform: translateX(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background: #fff;
}

.footer-social-item:hover .footer-qr-popup,
.footer-social-item.is-open .footer-qr-popup {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.footer-qr-popup img {
  display: block;
  width: 140px;
  height: 140px;
  max-width: none;
  border-radius: 4px;
  object-fit: contain;
}

.footer-qr-grid {
  display: none;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-qr-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-qr-item img {
  display: block;
  width: 88px;
  height: 88px;
  max-width: none;
  padding: 4px;
  background: #fff;
  border-radius: 4px;
  object-fit: contain;
}

.footer-qr-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1;
}

@media (max-width: 1024px) {
  .footer-social-links {
    display: none;
  }

  .footer-qr-grid {
    display: flex;
  }
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px clamp(20px, 3.5vw, 48px);
  width: 100%;
}

.footer-col {
  min-width: 0;
}

.footer-col-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: #fff;
}

/* 底部版权栏 */
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
}

.footer-legal {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
}

.footer-legal a {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
  transition: color var(--transition);
}

.footer-legal a:hover {
  color: rgba(255, 255, 255, 0.6);
}

.footer-legal-sep {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.15);
  margin: 0 4px;
}

.btn-primary.is-current {
  opacity: 0.92;
  pointer-events: none;
}

/* ========================================
   采购与合作页
   ======================================== */

.page-cooperate {
  background: #f5f7fb;
}

.coop-hero {
  position: relative;
  margin-top: var(--header-height);
  min-height: 300px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: linear-gradient(135deg, #eef3fa 0%, #f8f9fc 55%, #f0f2f8 100%);
}

.coop-hero-bg {
  position: absolute;
  inset: 0;
}

.coop-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.coop-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.55) 0%,
    rgba(0, 0, 0, 0.25) 50%,
    rgba(0, 0, 0, 0.35) 100%
  );
}

.coop-hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 40px 64px;
  text-align: center;
}

.coop-hero-title {
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 400;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 1px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.coop-hero-desc {
  max-width: 720px;
  margin: 0 auto;
  font-size: clamp(15px, 1.8vw, 17px);
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.75;
}

.coop-main {
  background: #f5f7fb;
}

.coop-section-inner {
  max-width: var(--layout-max);
  margin: 0 auto;
  padding: 0 var(--layout-gutter);
}

.coop-section-head {
  margin-bottom: 40px;
}

.coop-section-title {
  font-size: clamp(28px, 3.5vw, 36px);
  font-weight: 700;
  margin-bottom: 12px;
}

.coop-section-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.coop-contact {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--color-border);
}

.coop-contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.coop-contact-card {
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(35, 85, 152, 0.06);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.coop-contact-card:hover {
  border-color: rgba(35, 85, 152, 0.25);
  box-shadow: 0 8px 28px rgba(35, 85, 152, 0.1);
  transform: translateY(-2px);
}

.coop-contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  border-radius: 10px;
  color: var(--brand-blue);
  background: linear-gradient(135deg, rgba(35, 85, 152, 0.1) 0%, rgba(108, 67, 143, 0.1) 100%);
}

.coop-contact-icon svg {
  display: block;
  flex-shrink: 0;
}

.coop-contact-label {
  display: block;
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.coop-contact-value {
  display: block;
  font-size: clamp(12px, 1.8vw, 14px);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  word-break: break-all;
  transition: color var(--transition);
}

a.coop-contact-value:hover {
  color: var(--brand-blue);
}

.coop-contact-value--text {
  font-weight: 500;
  font-size: 16px;
  color: var(--color-text);
}

.coop-recruit-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 28px;
  background: linear-gradient(135deg, rgba(35, 85, 152, 0.08) 0%, rgba(108, 67, 143, 0.08) 100%);
  border: 1px solid rgba(35, 85, 152, 0.18);
  border-radius: 8px;
  color: var(--color-text);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.coop-recruit-banner:hover {
  background: linear-gradient(135deg, rgba(35, 85, 152, 0.12) 0%, rgba(108, 67, 143, 0.12) 100%);
  border-color: rgba(108, 67, 143, 0.28);
  box-shadow: 0 6px 24px rgba(35, 85, 152, 0.08);
}

.coop-recruit-banner svg {
  color: var(--brand-blue);
  flex-shrink: 0;
}

.coop-recruit-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.coop-recruit-text strong {
  font-size: 18px;
  font-weight: 600;
}

.coop-recruit-text span {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.coop-form-section {
  padding: 72px 0 96px;
}

.coop-form-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 48px;
  align-items: start;
}

.coop-form-wrap {
  padding: 36px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
}

.coop-form-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.coop-form-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  line-height: 1.6;
}

.coop-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.coop-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.coop-field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.coop-required {
  color: #c0392b;
  font-weight: 600;
}

.coop-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.coop-input,
.coop-textarea {
  width: 100%;
  padding: 14px 16px;
  font-size: 15px;
  font-family: inherit;
  color: var(--color-text);
  background: #fafbfc;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  outline: none;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.coop-input::placeholder,
.coop-textarea::placeholder {
  color: #bbb;
}

.coop-input:focus,
.coop-textarea:focus {
  border-color: var(--brand-blue);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(35, 85, 152, 0.1);
}

.coop-textarea {
  resize: vertical;
  min-height: 140px;
}

.coop-submit {
  align-self: flex-start;
  min-width: 160px;
  height: 48px;
  padding: 0 32px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--brand-gradient);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}

.coop-submit:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.coop-form-note {
  margin-top: 20px;
  font-size: 12px;
  color: var(--color-text-light);
  line-height: 1.6;
}

.coop-form-tip {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.5;
}

.coop-form-tip.is-success {
  color: #1b7a4e;
  background: #eaf8f0;
  border: 1px solid #b7e4c7;
}

.coop-form-tip.is-error {
  color: #a33b3b;
  background: #fdeeee;
  border: 1px solid #f0c2c2;
}

.coop-types {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.coop-type-card {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.coop-type-card:hover {
  border-color: rgba(35, 85, 152, 0.2);
  box-shadow: 0 6px 20px rgba(35, 85, 152, 0.08);
}

.coop-type-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.coop-type-card p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.coop-form.is-success .coop-submit {
  opacity: 0.6;
  pointer-events: none;
}

/* ========================================
   关于我们页
   ======================================== */

.about-banner {
  position: relative;
  width: 100%;
  margin-top: var(--header-height);
  overflow: hidden;
  background: #1a1a1a;
}

.about-banner-media {
  width: 100%;
  line-height: 0;
}

.about-banner-media img {
  display: block;
  width: 100%;
  height: auto;
}

.about-banner-inner {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  pointer-events: none;
}

.about-banner-copy {
  width: 100%;
  max-width: var(--layout-max);
  margin: 0 auto;
  padding: 0 var(--layout-gutter);
  pointer-events: auto;
}

.about-banner-title {
  margin: 0 0 clamp(10px, 1.6vw, 18px);
  font-size: clamp(32px, 4.6vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
}

.about-banner-title-main {
  color: #fff;
}

.about-banner-title-accent {
  margin-left: 0.12em;
  color: #d56560;
}

.about-banner-desc {
  margin: 0 0 clamp(20px, 3vw, 32px);
  max-width: 42em;
  font-size: clamp(14px, 1.55vw, 20px);
  font-weight: 500;
  line-height: 1.55;
}

.about-banner-desc-main {
  color: #fff;
}

.about-banner-desc-accent {
  margin-left: 0.2em;
  color: #d56560;
}

.about-banner-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  height: 42px;
  padding: 0 28px;
  border-radius: 999px;
  background: #fff;
  color: #1a1a1a;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.about-banner-cta:hover {
  background: #f5f5f5;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.about-hero-overlay {
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.62) 0%,
    rgba(0, 0, 0, 0.35) 55%,
    rgba(0, 0, 0, 0.42) 100%
  );
}

.about-hero-kicker {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 4px;
  color: rgba(255, 255, 255, 0.78);
}

.about-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(34, 30, 32, 0.08);
  backdrop-filter: blur(12px);
}

.about-nav-inner {
  display: flex;
  justify-content: center;
  gap: 8px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  overflow-x: auto;
}

.about-nav-link {
  flex-shrink: 0;
  padding: 16px 20px;
  font-size: 15px;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.about-nav-link:hover,
.about-nav-link.is-active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* 
#about-intro {
  background: url(../images/aboutbg.webp) no-repeat center center;
  background-size: cover;
} */

.about-section {
  padding: 120px 0 40px;
}

.about-section--culture {
  position: relative;
  overflow: hidden;
  padding: 72px 0 0;
  background: #fff;
}

.about-culture-hero-head {
  max-width: var(--layout-content, 1100px);
  margin: 0 auto 40px;
  padding: 0 var(--layout-gutter, 40px);
  text-align: center;
}

.about-culture-hero-title {
  margin: 0;
  font-size: clamp(28px, 3.5vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: #111827;
}

.about-culture-hero-sub {
  margin: 12px 0 0;
  font-size: clamp(15px, 1.5vw, 18px);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: #6b7280;
}

.about-culture-hero {
  position: relative;
  overflow: hidden;
  min-height: clamp(420px, 58vh, 640px);
  display: flex;
  align-items: flex-end;
  padding: 120px var(--layout-gutter, 40px) 72px;
}

.about-culture-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.about-culture-hero-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 45%;
}

.about-culture-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(18, 48, 120, 0.08) 0%,
    rgba(22, 55, 135, 0.28) 32%,
    rgba(20, 50, 125, 0.72) 68%,
    rgba(14, 38, 105, 0.92) 100%
  );
}

.about-culture-statements {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  width: 100%;
  max-width: var(--layout-content, 1100px);
  margin: 0 auto;
}

.about-culture-statement {
  position: relative;
  padding: 8px 48px 8px 0;
  background: transparent;
  border: 0;
  color: #fff;
}

.about-culture-statement--vision {
  padding: 8px 0 8px 48px;
  border-left: 1px solid rgba(255, 255, 255, 0.55);
}

.about-culture-statement-label {
  display: block;
  margin-bottom: 18px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.88);
}

.about-culture-statement-label em {
  font-style: normal;
  letter-spacing: 0.14em;
}

.about-culture-statement-label span {
  letter-spacing: 0.12em;
}

.about-culture-statement-title {
  margin: 0;
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: #fff;
}

.about-culture-statement-desc {
  margin: 18px 0 0;
  max-width: 28em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
}

.about-culture-values {
  position: relative;
  overflow: hidden;
  padding: 72px var(--layout-gutter, 40px) 96px;
  background: #fff;
}

.about-culture-values-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.about-culture-values-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.08;
}

.about-culture-values-inner {
  position: relative;
  z-index: 1;
  max-width: var(--layout-content, 1100px);
  margin: 0 auto;
}

.about-culture-values-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 32px;
  margin-bottom: 8px;
  padding-bottom: 24px;
}

.about-culture-values-title {
  margin: 0;
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: #111827;
}

.about-culture-values-title em {
  font-style: normal;
  letter-spacing: 0.02em;
}

.about-culture-values-summary {
  margin: 0;
  max-width: 36em;
  font-size: clamp(14px, 1.4vw, 16px);
  font-weight: 400;
  line-height: 1.6;
  color: #9ca3af;
  text-align: right;
}

.about-culture-values-list {
  border-top: 1px solid rgba(17, 24, 39, 0.1);
}

.about-culture-value {
  border-bottom: 1px solid rgba(17, 24, 39, 0.1);
}

.about-culture-value-toggle {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 40px;
  align-items: center;
  gap: 16px 20px;
  width: 100%;
  padding: 28px 0;
  margin: 0;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.about-culture-value-toggle:focus-visible {
  outline: 2px solid var(--color-accent, #564396);
  outline-offset: 4px;
}

.about-culture-value-index {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: #9ca3af;
}

.about-culture-value-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  min-width: 0;
}

.about-culture-value-title {
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 700;
  line-height: 1.3;
  color: #111827;
  transition: color 0.2s ease;
}

.about-culture-value-icon {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(17, 24, 39, 0.18);
  background: rgba(255, 255, 255, 0.75);
  transition: background 0.2s ease, border-color 0.2s ease;
  justify-self: end;
}

.about-culture-value-icon::before,
.about-culture-value-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 1.5px;
  background: #374151;
  transform: translate(-50%, -50%);
  transition: background 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
}

.about-culture-value-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.about-culture-value.is-open .about-culture-value-title {
  color: var(--color-accent, #564396);
}

.about-culture-value.is-open .about-culture-value-icon {
  background: var(--color-accent, #564396);
  border-color: var(--color-accent, #564396);
}

.about-culture-value.is-open .about-culture-value-icon::before,
.about-culture-value.is-open .about-culture-value-icon::after {
  background: #fff;
}

.about-culture-value.is-open .about-culture-value-icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg) scaleX(0);
}

.about-culture-value-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.32s ease;
}

.about-culture-value-panel[hidden] {
  display: none;
}

.about-culture-value.is-open .about-culture-value-panel {
  display: grid;
  grid-template-rows: 1fr;
}

.about-culture-value.is-open .about-culture-value-panel[hidden] {
  display: grid;
}

.about-culture-value-panel-inner {
  overflow: hidden;
  display: grid;
  margin: 0 0 28px;
  padding: 28px 32px;
  min-height: 0;
}

.about-culture-value-lead {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.55;
  color: #111827;
}

.about-culture-value-body {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: #6b7280;
}

.about-container {
  max-width: var(--layout-max);
  margin: 0 auto;
  padding: 0 var(--layout-gutter);
}

.about-section-head {
  margin-bottom: 40px;
}

.about-section-head--center {
  text-align: center;
}

.about-section-title {
  margin: 0 0 12px;
  font-size: clamp(28px, 3.5vw, 36px);
  font-weight: 700;
  color: var(--color-text);
}

.about-section-desc {
  margin: 0;
  max-width: 720px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.about-section-head--center .about-section-desc {
  margin-left: auto;
  margin-right: auto;
}

.about-intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 48px;
  align-items: center;
}

.about-intro-grid--text {
  display: block;
  margin: 0 auto;
}

.about-intro-body {
  font-size: 16px;
  line-height: 1.9;
  color: #252933;
}

.about-intro-body p {
  margin: 0 0 1.2em;
  text-indent: 2em;
}

.about-intro-body p:last-child {
  margin-bottom: 0;
}

.about-intro-visual {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: #e8edf3;
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.12);
}

.about-intro-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-section--history {
  position: relative;
  background-color: #0b1220;
  background-image: url('../images/hisbg.webp');
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  overflow: hidden;
  padding: 96px 0 0;
  min-height: 720px;
  color: #fff;
}

.about-container--history {
  max-width: var(--layout-max);
}

.about-history {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  align-items: start;
  gap: clamp(28px, 4vw, 56px);
  min-height: 640px;
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.about-section--history .about-section-head {
  margin-bottom: 48px;
}

.about-section--history .about-section-title {
  color: #fff;
}

.about-section--history .about-section-desc {
  color: rgba(255, 255, 255, 0.78);
}

.about-history-side {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  min-height: 0;
  /* 与右侧 main 顶距一致，再补到时间轴横线中心 */
  padding-top: 28px;
  padding-right: 8px;
}

.about-history-years {
  flex: 0 1 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  max-height: 360px;
  /* 月份行高 + 下边距 + 轴线半高 − 年份按钮文字大致中心 */
  margin-top: calc(0.9 * clamp(20px, 3.2vw, 28px) + 28px + 12px - 25px);
  padding-right: 4px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.35) transparent;
}

.about-history-years::-webkit-scrollbar {
  width: 4px;
}

.about-history-years::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.35);
  border-radius: 4px;
}

.about-history-year-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 4px;
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.55);
  cursor: pointer;
  text-align: left;
  font: inherit;
  transition: color 0.25s ease;
}

.about-history-year-btn::before {
  content: "";
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.45);
  background: transparent;
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.about-history-year-btn-text {
  font-size: 22px;
  font-weight: 600;
  line-height: 1;
  transition: font-size 0.25s ease, color 0.25s ease;
}

.about-history-year-btn:hover {
  color: rgba(255, 255, 255, 0.85);
}

.about-history-year-btn.is-active {
  color: #fff;
}

.about-history-year-btn.is-active::before {
  border-color: #fff;
  background: #fff;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.18);
}

.about-history-year-btn.is-active .about-history-year-btn-text {
  font-size: 30px;
  font-weight: 700;
}

.about-history-main {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 640px;
  padding: 28px 0 0;
}

.about-history-main-head {
  display: none;
  align-items: flex-end;
  justify-content: flex-start;
  gap: 16px;
  margin-bottom: 48px;
}

.about-history-main-title {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.about-history-main-year {
  font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: #fff;
}

.about-history-viewport {
  position: relative;
  flex: none;
  min-height: 0;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.about-history-viewport::-webkit-scrollbar {
  display: none;
}

.about-history-watermark {
  display: none;
  position: absolute;
  left: 50%;
  bottom: 0;
  top: auto;
  transform: translateX(-50%);
  font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
  font-size: clamp(160px, 28vw, 320px);
  font-weight: 700;
  line-height: 0.85;
  color: rgba(255, 255, 255, 0.06);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  z-index: 0;
}

.about-history-rail {
  display: none;
}

.about-history-track {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  gap: 0;
  min-height: 0;
  width: max-content;
  min-width: 100%;
  padding: 0 40vw 0 8px;
  box-sizing: border-box;
}

.about-history-card {
  position: relative;
  flex: 0 0 auto;
  width: min(320px, 78vw);
  padding: 0 48px;
  display: flex;
  flex-direction: column;
  opacity: 1;
  cursor: pointer;
}

.about-history-card:focus {
  outline: none;
}

.about-history-card-month {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 28px;
  color: #fff;
  cursor: pointer;
  position: relative;
  z-index: 2;
}

.about-history-card-month-num {
  font-size: clamp(20px, 3.2vw, 28px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.02em;
}

.about-history-card-month-unit {
  font-size: clamp(20px, 3.2vw, 28px);
  font-weight: 600;
}

.about-history-card-axis {
  position: relative;
  height: 24px;
  margin-bottom: 14px;
}

.about-history-card-axis::before {
  content: "";
  position: absolute;
  left: -48px;
  right: -48px;
  top: 50%;
  height: 1px;
  background: rgba(255, 255, 255, 0.55);
  transform: translateY(-50%);
}

.about-history-card:last-child .about-history-card-axis::before {
  right: calc(-48px - 40vw);
}

.about-history-card-dot {
  position: absolute;
  left: 0;
  top: 50%;
  z-index: 1;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.16);
  transform: translateY(-50%);
}

.about-history-card-title {
  margin: 0 0 8px;
  font-size: clamp(16px, 1.8vw, 20px);
  font-weight: 700;
  line-height: 1.45;
  color: #fff;
}

.about-history-card-desc {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.72);
}

.about-history-card-index {
  display: none;
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.45);
  text-transform: uppercase;
}

.about-history-controls {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex: none;
  margin-top: clamp(200px, 32vh, 360px);
  padding-top: 20px;
  padding-bottom: 36px;
}

.about-history-progress {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 0;
}

.about-history-progress-text {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.7);
  font-variant-numeric: tabular-nums;
}

.about-history-progress-bar {
  position: relative;
  flex: 1;
  height: 2px;
  background: rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  overflow: hidden;
}

.about-history-progress-fill {
  display: block;
  width: 0%;
  height: 100%;
  background: #fff;
  border-radius: inherit;
  transition: width 0.25s ease;
}

.about-history-nav {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.about-history-nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: #1a1a1a;
  cursor: pointer;
  transition: background 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
}

.about-history-nav-btn:hover:not(:disabled) {
  background: #fff;
  color: #1a1a1a;
}

.about-history-nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.about-history-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 15px;
}

.download-timeline-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
}

/* ========================================
   下载中心
   ======================================== */

.download-hero-overlay {
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.62) 0%,
    rgba(0, 0, 0, 0.35) 55%,
    rgba(0, 0, 0, 0.42) 100%
  );
}

.download-hero-kicker {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 4px;
  color: rgba(255, 255, 255, 0.78);
}

.download-main {
  padding: 40px 40px 96px;
  background: #f3f4f6;
}

.download-layout {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.download-sidebar {
  flex: 0 0 220px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(34, 30, 32, 0.08);
}

.download-sidebar-link {
  display: block;
  padding: 14px 16px;
  border-radius: 8px;
  color: var(--color-text-secondary);
  font-size: 15px;
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}

.download-sidebar-link:hover {
  background: #f7f9fc;
  color: var(--color-text);
}

.download-sidebar-link.is-active {
  background: rgba(35, 85, 152, 0.08);
  color: var(--color-accent);
  font-weight: 600;
  box-shadow: inset 3px 0 0 var(--color-accent);
}

.download-content {
  flex: 1;
  min-width: 0;
  padding: 32px 36px 40px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(34, 30, 32, 0.08);
}

.download-content-title {
  margin: 0 0 28px;
  font-size: clamp(28px, 3vw, 34px);
  font-weight: 700;
  color: var(--color-text);
}

.download-empty {
  margin: 0;
  padding: 48px 0;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 15px;
}

.download-video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px 24px;
}

@media (max-width: 1024px) {
  .download-main {
    padding: 32px 24px 80px;
  }

  .download-layout {
    flex-direction: column;
    align-items: stretch;
    gap: 20px;
  }

  .download-sidebar {
    position: static;
    flex: none;
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .download-sidebar-link {
    flex: 1 1 calc(50% - 4px);
    min-width: 140px;
    text-align: center;
    box-shadow: none;
  }

  .download-sidebar-link.is-active {
    box-shadow: none;
    border: 1px solid rgba(35, 85, 152, 0.25);
  }

  .download-content {
    width: 100%;
    max-width: none;
    flex: none;
    box-sizing: border-box;
  }

  .download-video-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.download-video-card {
  margin: 0;
}

.download-video-thumb {
  display: block;
  position: relative;
  width: 100%;
  padding: 0;
  border: none;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #111;
  cursor: pointer;
  text-decoration: none;
}

.download-video-thumb--link {
  cursor: pointer;
}

.download-video-thumb img,
.download-video-thumb-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.download-video-thumb-placeholder {
  display: block;
  background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
}

.download-video-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.18);
  transition: background var(--transition);
}

.download-video-thumb:hover .download-video-play {
  background: rgba(0, 0, 0, 0.32);
}

.download-video-title {
  margin: 14px 0 0;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--color-text);
}

.download-video-title a {
  color: inherit;
  text-decoration: none;
}

.download-video-title a:hover {
  color: var(--color-accent);
}

.download-doc-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.download-doc-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  border-radius: 10px;
  border: 1px solid rgba(34, 30, 32, 0.08);
  background: #fafbfc;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.download-doc-item:hover {
  border-color: rgba(35, 85, 152, 0.2);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

.download-doc-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: rgba(35, 85, 152, 0.08);
  color: var(--color-accent);
}

.download-doc-body {
  flex: 1;
  min-width: 0;
}

.download-doc-title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.download-doc-desc {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.download-doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.download-doc-meta span:not(:last-child)::after {
  content: "·";
  margin-left: 16px;
  color: rgba(34, 30, 32, 0.25);
}

.download-doc-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 88px;
  padding: 10px 20px;
  border-radius: 6px;
  background: var(--color-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
}

.download-doc-btn:hover {
  background: var(--color-primary-hover, #6b55b0);
  color: #fff;
}

.download-pagination {
  margin-top: 32px;
}

/* ========================================
   开源中心
   ======================================== */

.page-opensource {
  background: #f3f4f6;
  color: var(--color-text);
}

.page-opensource .site-footer {
  margin-top: 0;
}

.opensource-hero-overlay {
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.62) 0%,
    rgba(0, 0, 0, 0.35) 55%,
    rgba(0, 0, 0, 0.42) 100%
  );
}

.opensource-hero-kicker {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 4px;
  color: rgba(255, 255, 255, 0.78);
}

.opensource-main {
  padding: 40px 40px 96px;
}

.opensource-layout {
  display: flex;
  align-items: flex-start;
  gap: 28px;
  max-width: 1200px;
  margin: 0 auto;
}

.opensource-sidebar {
  flex: 0 0 220px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(34, 30, 32, 0.08);
}

.opensource-sidebar-link {
  display: block;
  padding: 14px 16px;
  border-radius: 8px;
  color: var(--color-text-secondary);
  font-size: 15px;
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}

.opensource-sidebar-link:hover {
  color: var(--color-text);
  background: #f7f9fc;
}

.opensource-sidebar-link.is-active {
  color: var(--color-accent);
  background: rgba(35, 85, 152, 0.08);
  font-weight: 600;
  box-shadow: inset 3px 0 0 var(--color-accent);
}

.opensource-content {
  flex: 1;
  min-width: 0;
  padding: 32px 36px 40px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(34, 30, 32, 0.08);
}

.opensource-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.opensource-search {
  position: relative;
  flex: 1;
  max-width: 420px;
}

.opensource-search-icon {
  position: absolute;
  top: 50%;
  left: 16px;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
  pointer-events: none;
}

.opensource-search-input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  border: 1px solid rgba(34, 30, 32, 0.12);
  border-radius: 10px;
  background: #f8fafc;
  color: var(--color-text);
  font-size: 15px;
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}

.opensource-search-input::placeholder {
  color: rgba(34, 30, 32, 0.38);
}

.opensource-search-input:focus {
  border-color: rgba(35, 85, 152, 0.35);
  background: #fff;
}

.opensource-sort {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.opensource-sort-label {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.opensource-sort-select {
  min-width: 132px;
  padding: 12px 36px 12px 14px;
  border: 1px solid rgba(34, 30, 32, 0.12);
  border-radius: 10px;
  background: #f8fafc;
  color: var(--color-text);
  font-size: 14px;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23221e20' stroke-opacity='0.55' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.opensource-sort-select:focus {
  border-color: rgba(35, 85, 152, 0.35);
  background: #fff;
}

.opensource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.opensource-card {
  display: flex;
  flex-direction: column;
  min-height: 220px;
  padding: 22px 22px 18px;
  border-radius: 14px;
  background: #f8fafc;
  border: 1px solid rgba(34, 30, 32, 0.08);
  color: inherit;
  text-decoration: none;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.opensource-card:hover {
  transform: translateY(-2px);
  background: #fff;
  border-color: rgba(35, 85, 152, 0.2);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
}

.opensource-card.is-hidden {
  display: none;
}

.opensource-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.opensource-card-tag {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.opensource-card-icon {
  color: rgba(35, 85, 152, 0.55);
}

.opensource-card-title {
  margin: 0 0 12px;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
}

.opensource-card-desc {
  margin: 0;
  flex: 1;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.opensource-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid rgba(34, 30, 32, 0.08);
  font-size: 14px;
  color: var(--color-accent);
}

.opensource-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 56px 0;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 15px;
}

.opensource-empty.is-hidden {
  display: none;
}

@media (max-width: 1024px) {
  .opensource-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ========================================
   新闻列表页
   ======================================== */

.news-page-main {
  background: #F3F4F6;
  padding: 48px 40px 80px;
}

.news-page-inner {
  max-width: 1440px;
  margin: 0 auto;
}

.news-page-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px 24px;
}

.news-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.news-card:hover {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.news-card-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #f0f0f0;
}

.news-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.news-card:hover .news-card-media img {
  transform: scale(1.05);
}

.news-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 12px;
}

.news-card-title {
  flex: 1;
  margin-bottom: 12px;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.55;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--color-text-light);
}

.news-card-meta time {
  font-variant-numeric: tabular-nums;
}

.news-card-tag {
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

.news-page-empty {
  grid-column: 1 / -1;
  padding: 64px 24px;
  text-align: center;
  font-size: 15px;
  color: var(--color-text-secondary);
}

.news-pagination {
  margin-top: 40px;
  text-align: center;
}

.news-pagination .pagination {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.news-pagination .pagination > li {
  display: inline-block;
}

.news-pagination .pagination > li > a,
.news-pagination .pagination > li > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  font-size: 14px;
  color: var(--color-text-secondary);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.news-pagination .pagination > li > a:hover {
  color: var(--brand-blue);
  border-color: var(--brand-blue);
}

.news-pagination .pagination > li.active > span {
  color: #fff;
  background: var(--brand-gradient);
  border-color: transparent;
}

.news-pagination .pagination > li.disabled > span {
  color: #ccc;
  background: #fafafa;
  cursor: not-allowed;
}

/* ========================================
   新闻详情页（参考宇树）
   ======================================== */

.news-detail-main {
  background: #F3F4F6;
  margin-top: var(--header-height);
  padding: 12px 40px 80px;
}

.news-detail-container {
  max-width: 880px;
  margin: 12px auto;
}

.news-content {
  background: #fff;
  border-radius: 4px;
  box-sizing: border-box;
  padding: 20px 30px;
}

.news-content .title {
  color: #252933;
  font-size: 24px;
  font-weight: 700;
  line-height: 32px;
  margin: 10px 0 15px;
}

.news-content .infos {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

.news-content .infos p {
  color: rgba(0, 0, 0, 0.3);
  font-size: 14px;
  line-height: 24px;
  margin-right: 15px;
}

.news-content .infos .name {
  color: #576b95;
  font-size: 14px;
  font-weight: 600;
  line-height: 24px;
  margin-right: 15px;
}

.news-content .htmlContent {
  color: #252933;
  font-size: 16px;
  line-height: 1.8;
  word-break: break-word;
}

.news-content .htmlContent img{
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}
.news-content .htmlContent video {
  max-width: 100%;
  height: auto;
  margin: 16px auto;
  border-radius: 4px;
}

.news-content .htmlContent p {
  margin-bottom: 1em;
}

.news-content .htmlContent h2,
.news-content .htmlContent h3,
.news-content .htmlContent h4 {
  margin: 1.5em 0 0.75em;
  font-weight: 600;
  line-height: 1.4;
  color: #252933;
}

.news-content .htmlContent ul,
.news-content .htmlContent ol {
  margin: 0 0 1em 1.25em;
}

.news-content .htmlContent li {
  margin-bottom: 0.35em;
}

.news-content .htmlContent a {
  color: #576b95;
  text-decoration: underline;
}

.news-content .htmlContent blockquote {
  margin: 1em 0;
  padding: 12px 16px;
  border-left: 3px solid #e5e5e5;
  color: var(--color-text-secondary);
  background: #fafafa;
}

.news-content .htmlContent table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
}

.news-content .htmlContent th,
.news-content .htmlContent td {
  border: 1px solid var(--color-border);
  padding: 8px 12px;
  font-size: 14px;
}

/* ========================================
   常见问题（参考宇树帮助中心）
   ======================================== */

.page-faq {
  background: #f3f4f6;
}

.faq-hero {
  margin-top: var(--header-height);
  padding: 56px 40px 40px;
  background: linear-gradient(180deg, #fff 0%, #f3f4f6 100%);
}

.faq-hero--compact {
  padding-bottom: 28px;
}

.faq-hero-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.faq-hero-kicker {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.faq-hero-kicker a {
  color: inherit;
  text-decoration: none;
}

.faq-hero-kicker a:hover {
  text-decoration: underline;
}

.faq-hero-title {
  margin: 0 0 12px;
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
}

.faq-hero-desc {
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.faq-search {
  position: relative;
  max-width: 560px;
  margin: 0 auto;
}

.faq-search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(34, 30, 32, 0.42);
  pointer-events: none;
}

.faq-search-input {
  width: 100%;
  height: 52px;
  padding: 0 20px 0 48px;
  border: 1px solid rgba(34, 30, 32, 0.12);
  border-radius: 999px;
  background: #fff;
  font-size: 15px;
  color: var(--color-text);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.04);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-search-input:focus {
  outline: none;
  border-color: rgba(35, 85, 152, 0.35);
  box-shadow: 0 8px 28px rgba(35, 85, 152, 0.08);
}

.faq-main {
  padding: 0 40px 80px;
}

.faq-inner {
  max-width: 1080px;
  margin: 0 auto;
}

.faq-cats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.faq-cats--tabs .faq-cat-card {
  min-height: 112px;
  padding: 20px 16px;
}

.faq-cats--tabs .faq-cat-desc {
  display: none;
}

.faq-cat-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 148px;
  padding: 22px 20px;
  border: 1px solid rgba(34, 30, 32, 0.08);
  border-radius: 12px;
  background: #fff;
  color: inherit;
  text-decoration: none;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.faq-cat-card:hover,
.faq-cat-card.is-active {
  border-color: rgba(35, 85, 152, 0.28);
  box-shadow: 0 10px 28px rgba(35, 85, 152, 0.08);
  transform: translateY(-2px);
}

.faq-cat-card.is-active {
  background: linear-gradient(180deg, #fff 0%, #f7f9fc 100%);
}

.faq-cat-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
  border-radius: 10px;
  background: #eef3fa;
  color: #235598;
}

.faq-cat-icon::before {
  font-size: 18px;
  line-height: 1;
}

.faq-cat-card:nth-child(1) .faq-cat-icon::before { content: "◎"; }
.faq-cat-card:nth-child(2) .faq-cat-icon::before { content: "✦"; }
.faq-cat-card:nth-child(3) .faq-cat-icon::before { content: "⌁"; }
.faq-cat-card:nth-child(4) .faq-cat-icon::before { content: "◈"; }

.faq-cat-card:nth-child(2) .faq-cat-icon { background: #f3eef8; color: #6c438f; }
.faq-cat-card:nth-child(3) .faq-cat-icon { background: #eef8f3; color: #1f7a55; }
.faq-cat-card:nth-child(4) .faq-cat-icon { background: #fff4ea; color: #b56a1b; }

.faq-cat-title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
}

.faq-cat-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.faq-list-wrap {
  background: #fff;
  border: 1px solid rgba(34, 30, 32, 0.08);
  border-radius: 12px;
  overflow: hidden;
}

.faq-list-heading {
  margin: 0;
  padding: 22px 24px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
  border-bottom: 1px solid rgba(34, 30, 32, 0.08);
}

.faq-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.faq-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  border-bottom: 1px solid rgba(34, 30, 32, 0.06);
  color: inherit;
  text-decoration: none;
  transition: background var(--transition);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item:hover {
  background: #f8fafc;
}

.faq-item-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.faq-item-title {
  font-size: 16px;
  line-height: 1.55;
  color: var(--color-text);
}

.faq-item-tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 2px 8px;
  border-radius: 999px;
  background: #f0f2f5;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.faq-item-arrow {
  flex-shrink: 0;
  color: rgba(34, 30, 32, 0.35);
}

.faq-list-empty {
  padding: 40px 24px;
  text-align: center;
  font-size: 15px;
  color: var(--color-text-secondary);
}

.faq-pagination {
  padding: 18px 24px 22px;
  border-top: 1px solid rgba(34, 30, 32, 0.06);
}

.faq-detail-main {
  margin-top: var(--header-height);
  padding: 24px 40px 80px;
  background: #f3f4f6;
}

.faq-detail-layout {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  max-width: 1280px;
  margin: 0 auto;
}

.faq-detail-aside {
  flex: 0 0 300px;
  width: 300px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
  max-height: calc(100vh - var(--header-height) - 48px);
  display: flex;
  flex-direction: column;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(34, 30, 32, 0.08);
  overflow: hidden;
}

.faq-aside-head {
  flex-shrink: 0;
  padding: 16px 16px 12px;
  border-bottom: 1px solid rgba(34, 30, 32, 0.06);
}

.faq-aside-home {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition);
}

.faq-aside-home:hover {
  color: var(--color-accent);
}

.faq-aside-search {
  position: relative;
}

.faq-aside-search .faq-search-icon {
  left: 12px;
  width: 16px;
  height: 16px;
}

.faq-aside-search-input {
  width: 100%;
  height: 38px;
  padding: 0 12px 0 36px;
  border: 1px solid rgba(34, 30, 32, 0.12);
  border-radius: 8px;
  background: #f8f9fb;
  font-size: 14px;
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}

.faq-aside-search-input:focus {
  border-color: rgba(35, 85, 152, 0.35);
  background: #fff;
}

.faq-aside-nav {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0 12px;
}

.faq-aside-group {
  border-bottom: 1px solid rgba(34, 30, 32, 0.05);
}

.faq-aside-group:last-child {
  border-bottom: none;
}

.faq-aside-cat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  padding: 14px 16px;
  border: none;
  background: transparent;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.faq-aside-cat:hover,
.faq-aside-group.is-open > .faq-aside-cat {
  background: #f7f9fc;
  color: var(--color-accent);
}

.faq-aside-cat-arrow {
  flex-shrink: 0;
  color: var(--color-text-light);
  transition: transform var(--transition);
}

.faq-aside-group.is-open > .faq-aside-cat .faq-aside-cat-arrow {
  transform: rotate(180deg);
}

.faq-aside-list {
  display: none;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
}

.faq-aside-group.is-open > .faq-aside-list {
  display: block;
  max-height: 450px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(34, 30, 32, 0.22) transparent;
}

.faq-aside-group.is-open > .faq-aside-list::-webkit-scrollbar {
  width: 4px;
}

.faq-aside-group.is-open > .faq-aside-list::-webkit-scrollbar-track {
  background: transparent;
}

.faq-aside-group.is-open > .faq-aside-list::-webkit-scrollbar-thumb {
  background: rgba(34, 30, 32, 0.22);
  border-radius: 4px;
}

.faq-aside-group.is-open > .faq-aside-list::-webkit-scrollbar-thumb:hover {
  background: rgba(34, 30, 32, 0.38);
}

.faq-aside-link {
  display: block;
  padding: 10px 16px 10px 24px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.faq-aside-link:hover {
  background: #f3f6fa;
  color: var(--color-text);
}

.faq-aside-link.is-active {
  background: rgba(35, 85, 152, 0.08);
  border-left-color: var(--color-accent);
  color: var(--color-accent);
  font-weight: 600;
}

.faq-aside-empty {
  padding: 8px 16px 8px 24px;
  font-size: 13px;
  color: var(--color-text-light);
}

.faq-aside-group.is-hidden {
  display: none;
}

.faq-detail-body {
  flex: 1;
  min-width: 0;
}

.faq-detail-container {
  max-width: 880px;
  margin: 0 auto;
}

.faq-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.faq-breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.faq-breadcrumb a:hover {
  color: var(--color-accent);
}

.faq-breadcrumb-current {
  color: var(--color-text);
}

.faq-detail-card {
  padding: 28px 32px 32px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(34, 30, 32, 0.08);
}

.faq-detail-title {
  margin: 0 0 14px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
}

.faq-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(34, 30, 32, 0.08);
  font-size: 14px;
  color: var(--color-text-light);
}

.faq-detail-content {
  color: #252933;
  font-size: 16px;
  line-height: 1.8;
  word-break: break-word;
}

.faq-detail-content img,
.faq-detail-content video {
  max-width: 100%;
  height: auto;
}

.faq-detail-content p {
  margin-bottom: 1em;
}

.faq-detail-content ul,
.faq-detail-content ol {
  margin: 0 0 1em 1.25em;
}

.faq-detail-body .faq-breadcrumb {
  margin-bottom: 16px;
}

/* ========================================
   客户服务 / 故障报修
   ======================================== */

.page-service {
  background: #fff;
}

.service-main {
  margin-top: var(--header-height);
  padding: 48px 40px 96px;
  min-height: calc(100vh - var(--header-height));
}

.service-inner {
  max-width: 1080px;
  margin: 0 auto;
}

.service-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
}

.service-tab {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid rgba(34, 30, 32, 0.12);
  background: #fff;
  color: var(--color-text-secondary);
  font-size: 14px;
  text-decoration: none;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.service-tab:hover {
  border-color: rgba(35, 85, 152, 0.28);
  color: var(--color-accent);
}

.service-tab.is-active {
  border-color: var(--color-accent);
  background: rgba(35, 85, 152, 0.08);
  color: var(--color-accent);
  font-weight: 600;
}

.service-form-panel {
  max-width: 960px;
  margin: 0 auto;
}

.service-form-title {
  margin: 0 0 32px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  text-align: center;
  color: var(--color-text);
}

.service-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.service-form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.service-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.service-field--full {
  grid-column: 1 / -1;
}

.service-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.service-required {
  color: #c0392b;
  font-weight: 600;
}

.service-upload {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 48px;
  padding: 12px 16px;
  border: 1px dashed #d1d5db;
  border-radius: 4px;
  background: #fafafa;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
}

.service-upload:hover {
  border-color: rgba(35, 85, 152, 0.45);
  background: #f5f8fc;
}

.service-upload-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  overflow: hidden;
}

.service-upload-btn {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary, #564396);
}

.service-upload-hint {
  font-size: 12px;
  color: #9ca3af;
  word-break: break-all;
}

.service-input,
.service-textarea,
.service-select {
  width: 100%;
  padding: 14px 16px;
  font-size: 14px;
  font-family: inherit;
  color: var(--color-text);
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 4px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.service-input::placeholder,
.service-textarea::placeholder {
  color: #b0b5bf;
}

.service-input:focus,
.service-textarea:focus,
.service-select:focus {
  border-color: rgba(35, 85, 152, 0.45);
  box-shadow: 0 0 0 3px rgba(35, 85, 152, 0.08);
}

.service-select {
  appearance: none;
  padding-right: 36px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  cursor: pointer;
}

.service-select:invalid {
  color: #b0b5bf;
}

.service-textarea {
  min-height: 160px;
  resize: vertical;
  line-height: 1.7;
}

.service-form-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 8px;
}

.service-btn {
  min-width: 120px;
  height: 44px;
  padding: 0 28px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition), background var(--transition), border-color var(--transition);
}

.service-btn--primary {
  border: none;
  color: #fff;
  background: #235598;
}

.service-btn--primary:hover:not(:disabled) {
  opacity: 0.92;
}

.service-btn--primary:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.service-btn--ghost {
  border: 1px solid #e5e7eb;
  color: var(--color-text-secondary);
  background: #fff;
}

.service-btn--ghost:hover {
  border-color: #d1d5db;
  color: var(--color-text);
}

.service-form-tip {
  margin: 20px 0 0;
  text-align: center;
  font-size: 14px;
  line-height: 1.6;
}

.service-form-tip.is-success {
  color: #1f7a55;
}

.service-form-tip.is-error {
  color: #c0392b;
}

/* ========================================
   条款与政策
   ======================================== */

.page-terms {
  background: #f3f4f6;
}

.terms-hero-kicker {
  margin: 0 0 10px;
  font-size: 14px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.82);
}

.terms-main {
  padding: 40px 40px 96px;
}

.terms-layout {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.terms-nav {
  flex: 0 0 220px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(34, 30, 32, 0.08);
}

.terms-nav-item {
  display: block;
  width: 100%;
  padding: 14px 16px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 15px;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.terms-nav-item:hover {
  background: #f7f9fc;
  color: var(--color-text);
}

.terms-nav-item.is-active {
  background: rgba(35, 85, 152, 0.08);
  color: var(--color-accent);
  font-weight: 600;
}

.terms-panels {
  flex: 1;
  min-width: 0;
}

.terms-panel {
  display: none;
  padding: 32px 36px 40px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(34, 30, 32, 0.08);
}

.terms-panel.is-active {
  display: block;
}

.terms-panel-title {
  margin: 0 0 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(34, 30, 32, 0.08);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
}

.terms-panel-body {
  color: #252933;
  font-size: 15px;
  line-height: 1.85;
  word-break: break-word;
}

.terms-panel-body h3 {
  margin: 28px 0 12px;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
}

.terms-panel-body h3:first-child {
  margin-top: 0;
}

.terms-panel-body p {
  margin: 0 0 1em;
}

.terms-panel-body ul,
.terms-panel-body ol {
  margin: 0 0 1em 1.25em;
  padding: 0;
}

.terms-panel-body li {
  margin-bottom: 0.45em;
}

.terms-panel-body strong {
  color: var(--color-text);
}


/* ========================================
   响应式
   ======================================== */

@media (max-width: 1200px) {
  .header-inner {
    padding: 0 24px;
  }

  .coop-section-inner {
    padding: 0 24px;
  }

  .about-banner-copy {
    padding: 0 24px;
  }

  .about-container {
    padding: 0 24px;
  }

  .nav-link {
    padding: 8px 12px;
    font-size: 14px;
  }

  .mega-menu-inner {
    padding: 24px;
    gap: 32px;
  }
}

@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    flex-direction: column;
    justify-content: flex-start;
    padding: 16px 0;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 999;
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
  }

  .nav-link {
    padding: 14px 24px;
    font-size: 16px;
  }

  .dropdown-menu {
    position: static;
    top: auto;
    left: auto;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    padding: 0 0 8px 16px;
    display: none;
  }

  .nav-item.has-dropdown.is-expanded .dropdown-menu {
    display: block;
  }

  .mega-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    display: none;
    pointer-events: auto;
  }

  .nav-item.has-mega.is-expanded .mega-menu {
    display: block;
  }

  .mega-menu-inner--split {
    flex-direction: column;
    min-height: 0;
  }

  .mega-sidebar {
    width: 100%;
    padding: 0 24px 16px;
    border-right: none;
    border-bottom: 1px solid #f0f0f0;
  }

  .mega-products {
    padding: 16px 24px 24px;
  }

  .mega-product-grid {
    gap: 16px;
  }

  .mega-product-card {
    width: 140px;
  }

  .mega-product-card-img {
    width: 140px;
    height: 180px;
  }

  .btn-hamburger {
    display: flex;
  }

  .btn-lang span {
    display: none;
  }

  .hero-content {
    width: min(92%, 640px);
    padding: 0 20px;
  }

  .hero-content--pos-1,
  .hero-content--pos-2,
  .hero-content--pos-3 {
    top: 18%;
  }

  .hero-content--pos-7,
  .hero-content--pos-8,
  .hero-content--pos-9 {
    bottom: 18%;
  }

  .product-hero .hero-content {
    width: 100%;
    padding: 0 24px;
  }

  .page-solution .solution-banner-inner {
    padding: 0 clamp(28px, 4vw, 48px);
  }

  .page-solution .solution-banner-inner .hero-content {
    width: auto;
    max-width: min(680px, 100%);
    padding: 0 clamp(12px, 2vw, 24px);
  }

  .page-solution .solution-banner-inner .hero-content--pos-1,
  .page-solution .solution-banner-inner .hero-content--pos-4,
  .page-solution .solution-banner-inner .hero-content--pos-7 {
    left: clamp(8px, 1.5vw, 20px);
  }

  .page-solution .solution-banner-inner .hero-content--pos-3,
  .page-solution .solution-banner-inner .hero-content--pos-6,
  .page-solution .solution-banner-inner .hero-content--pos-9 {
    right: clamp(8px, 1.5vw, 20px);
  }

  .product-hero .hero-subtitle {
    margin-bottom: 20px;
  }

  .product-hero-inner {
    padding: 0 24px 40px;
  }

  .product-hero--video .product-hero-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .product-hero--image .product-hero-bar {
    flex-direction: row;
    align-items: center;
  }

  .product-hero-btns {
    margin-left: 0;
    width: 100%;
  }

  .product-showcase-btns .product-hero-btn {
    flex: 1;
    min-width: 0;
  }

  .product-hero .product-hero-btn {
    flex: none;
    width: auto;
    min-width: 0;
  }

  .product-showcase-inner {
    padding: 0 24px;
  }

  .product-showcase-subtitle {
    margin-bottom: 32px;
  }

  .page-product-ppt .product-feature-inner {
    padding: 0;
  }

  body:not(.page-product-ppt) .product-feature-inner {
    padding: 48px 24px 0;
  }

  .product-motion-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 24px;
    overflow-y: auto;
  }

  .product-motion-visual {
    max-height: 40vh;
  }

  .product-spec-grid {
    max-width: 100%;
  }

  .product-power-inner {
    padding: 40px 24px 32px;
  }

  .product-power-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px 20px;
  }

  .coop-contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .coop-form-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .coop-field-row {
    grid-template-columns: 1fr;
  }

  .coop-form-wrap {
    padding: 28px 24px;
  }

  .coop-hero-inner {
    padding: 40px 24px 48px;
  }

  .coop-section-inner {
    padding: 0 24px;
  }

  .coop-contact {
    padding: 56px 0 40px;
  }

  .coop-form-section {
    padding: 56px 0 72px;
  }

  .news-page-main {
    padding: 40px 24px 64px;
  }

  .search-page-main {
    padding: 32px 24px 64px;
  }

  .news-page-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 16px;
  }

  .product-video-inner {
    padding: 40px 24px;
  }

  .industry-section {
    padding: 64px 24px 80px;
  }

  .industry-accordion {
    height: clamp(500px, 60vh, 640px);
    gap: 10px;
  }

  .industry-panel {
    min-width: 88px;
  }

  .industry-panel-collapsed {
    gap: 44px;
    transform: none;
  }

  .industry-panel.is-active .industry-panel-collapsed {
    transform: none;
  }

  .industry-panel-expanded {
    padding: 28px 24px 32px;
    max-width: 92%;
  }

  .index-pro {
    padding: 20px 24px;
  }

  .index-pro-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .index-pro-card {
    min-height: 480px;
  }

  .index-pro-head {
    padding: 32px 20px 0;
  }

  .index-pro-media {
    top: 180px;
    padding: 0 16px;
  }

  .industry-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .industry-slider.is-carousel .industry-card {
    flex: 0 0 calc((100% - 16px) / 2);
  }

  .news-section {
    padding: 56px 24px 64px;
  }

  .news-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .news-featured {
    min-height: 320px;
  }

  .news-list {
    gap: 12px;
  }

  .partners-section {
    padding: 56px 24px 64px;
  }

  .partners-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px 24px;
  }

  .footer-inner {
    padding: 0 24px;
  }

  .footer-main-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 32px;
  }

  .footer-qr-item img {
    width: 80px;
    height: 80px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    padding: 0 16px;
  }

  .logo-img {
    height: 36px;
    max-width: 160px;
  }

  .btn-primary {
    padding: 0 16px;
    font-size: 13px;
  }

  .btn-search {
    display: none;
  }

  .hero-controls {
    bottom: 20px;
  }

  .hero-arrow {
    width: 32px;
    height: 32px;
  }

  /* Mobile: home first indexpic / product / solution height closer to About banner */
  .hero,
  body > .indexpic-section:first-of-type,
  .product-hero,
  .product-hero.product-screen,
  .page-solution .solution-banner.indexpic-section {
    height: clamp(200px, 60vw, 280px);
    min-height: 200px;
  }

  body > .indexpic-section:first-of-type {
    margin-top: var(--header-height);
  }

  .hero .hero-title,
  body > .indexpic-section:first-of-type .hero-title {
    font-size: clamp(22px, 6vw, 28px);
  }

  .hero .hero-subtitle,
  body > .indexpic-section:first-of-type .hero-subtitle {
    font-size: 13px;
  }

  body > .indexpic-section:first-of-type .indexpic-actions {
    margin-top: 12px;
    gap: 10px;
  }

  body > .indexpic-section:first-of-type .indexpic-btn {
    height: 36px;
    padding: 0 16px;
    font-size: 13px;
  }

  .hero-controls {
    bottom: 12px;
  }

  .hero-content--pos-7,
  .hero-content--pos-8,
  .hero-content--pos-9 {
    bottom: 14%;
  }

  .page-product-ppt .product-hero-scroll {
    display: none;
  }

  .product-hero-inner {
    padding: 0 16px 20px;
  }

  .page-solution .solution-banner-inner .hero-content--pos-7,
  .page-solution .solution-banner-inner .hero-content--pos-8,
  .page-solution .solution-banner-inner .hero-content--pos-9,
  .product-hero .hero-content--pos-7,
  .product-hero .hero-content--pos-8,
  .product-hero .hero-content--pos-9 {
    bottom: 12%;
  }

  .product-hero .hero-title {
    font-size: clamp(22px, 6vw, 28px);
  }

  .product-hero .hero-subtitle {
    margin-bottom: 12px;
    font-size: 13px;
  }

  .page-solution .solution-hero-btn {
    margin-top: 12px;
  }

  .product-hero-head {
    margin-bottom: 24px;
  }

  .product-hero-btns {
    flex-direction: column;
    width: 100%;
  }

  .product-hero .product-hero-btn {
    width: auto;
    flex: none;
    min-width: 0;
    height: 32px;
    padding: 0 18px;
    font-size: 13px;
  }

  .product-showcase-content {
    max-width: 100%;
  }

  .product-showcase-btns {
    flex-direction: column;
    width: 100%;
  }

  .product-showcase-btns .product-hero-btn {
    width: 100%;
  }

  .page-product-ppt .product-feature-inner {
    padding: 0;
  }

  body:not(.page-product-ppt) .product-feature-inner {
    padding: 40px 16px 0;
  }

  body:not(.page-product-ppt) .product-feature-title {
    margin-bottom: 16px;
  }

  .product-motion-inner {
    padding: 24px 16px;
  }

  .product-ability {
    padding: 56px 16px;
  }

  .key_benefit-section.product-screen-slider {
    padding: 56px 16px 64px;
  }

  .product-screen-slider-head {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 24px;
  }

  .product-screen-slider-slide {
    flex-basis: 86%;
    width: 86%;
  }

  .product-screen-slider-track {
    min-height: auto;
  }

  .product-screen-slider-media-wrap,
  .product-screen-slider-media {
    min-height: auto;
  }

  .product-screen-slider-media img,
  .product-screen-slider-media video {
    height: auto;
    min-height: 220px;
    aspect-ratio: 16 / 9;
  }

  .product-screen-slider-detail {
    position: static;
    width: 100%;
    margin-top: 20px;
    padding: 24px 20px;
  }

  .product-vision {
    padding: 56px 16px 40px;
  }

  .product-vision-block {
    min-height: auto;
    padding-bottom: 0;
  }

  .product-vision-image {
    max-width: 100%;
    margin-bottom: 0;
  }

  .product-vision-circle {
    width: 28px;
    height: 28px;
  }

  .product-vision-circle .dot {
    width: 5px;
    height: 5px;
  }

  .product-vision-bottom {
    position: static;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    margin-top: 24px;
    padding-top: 0;
    gap: 20px;
    opacity: 1;
    visibility: visible;
  }

  .product-vision-bottom:not(.is-active) {
    position: static;
  }

  .product-vision-bottom.is-active {
    display: flex;
    position: static;
  }

  .product-vision-left {
    max-width: none;
  }

  .product-vision-parts {
    max-width: none;
    height: 180px;
  }

  .product-ability-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .product-industry {
    padding: 56px 0 64px;
  }

  .product-industry-stage {
    padding: 0 40px;
  }

  .product-industry-nav-btn {
    width: 34px;
    height: 34px;
  }

  .product-industry-nav-btn--prev {
    left: 4px;
  }

  .product-industry-nav-btn--next {
    right: 4px;
  }

  .product-industry-title {
    margin-bottom: 32px;
    padding: 0 16px;
  }

  .product-industry-viewport {
    --pi-gap: 12px;
  }

  .product-industry .product-industry-card {
    flex: 0 0 calc((100vw - var(--pi-gap) * (var(--pi-cols) - 1)) / var(--pi-cols));
    width: calc((100vw - var(--pi-gap) * (var(--pi-cols) - 1)) / var(--pi-cols));
    max-width: calc((100vw - var(--pi-gap) * (var(--pi-cols) - 1)) / var(--pi-cols));
  }

  .product-industry-dots {
    margin-top: 28px;
  }

  .product-specs {
    padding: 48px 16px 56px;
  }

  .product-specs-table th,
  .product-specs-table td {
    padding: 14px 12px;
    font-size: 13px;
  }

  .product-specs-th-cat,
  .product-specs-cat {
    width: 40px;
    max-width: 40px;
    min-width: 40px;
  }

  .product-specs-cat-text {
    font-size: 12px;
    letter-spacing: 2px;
  }

  .product-specs-note {
    margin-top: 20px;
    font-size: 12px;
    text-align: left;
  }

  .product-spec-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .product-float-tools {
    right: 16px;
    bottom: 24px;
  }

  .product-power-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .product-power-inner {
    padding: 32px 16px 28px;
    justify-content: flex-start;
    gap: 40px;
  }

  .product-video-inner {
    padding: 32px 16px;
    gap: 24px;
  }

  .product-video-play {
    width: 64px;
    height: 64px;
  }

  .coop-contact {
    padding: 48px 0 32px;
  }

  .coop-form-section {
    padding: 48px 0 64px;
  }

  .coop-contact-grid {
    grid-template-columns: 1fr;
  }

  .coop-recruit-banner {
    flex-direction: column;
    align-items: flex-start;
  }

  .coop-submit {
    width: 100%;
  }

  .coop-form-wrap {
    padding: 24px 16px;
  }

  .coop-hero-inner {
    padding: 32px 16px 40px;
  }

  .coop-section-inner {
    padding: 0 16px;
  }

  .industry-section {
    padding: 48px 16px 64px;
  }

  .industry-heading {
    margin-bottom: 36px;
  }

  .industry-accordion {
    flex-direction: column;
    height: auto;
    gap: 10px;
  }

  .industry-panel {
    flex: none !important;
    min-width: 0;
    height: 88px;
    transition: height 0.45s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .industry-panel.is-active {
    height: 400px;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.14);
  }

  .industry-panel-collapsed {
    flex-direction: row;
    justify-content: flex-start;
    gap: 16px;
    padding: 0 20px;
    transform: none;
  }

  .industry-panel.is-active .industry-panel-collapsed {
    transform: none;
  }

  .industry-panel-vtitle {
    writing-mode: horizontal-tb;
    letter-spacing: 0.08em;
    font-size: 16px;
  }

  .industry-panel-expanded {
    padding: 24px 20px 28px;
    max-width: none;
  }

  .industry-panel-icon {
    width: 32px;
    height: 32px;
  }

  .industry-track {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }

  .industry-track::-webkit-scrollbar {
    display: none;
  }

  .industry-card {
    flex: 0 0 72%;
    scroll-snap-align: start;
    aspect-ratio: 4 / 3;
  }

  .industry-slider.is-carousel .industry-track {
    overflow: hidden;
  }

  .industry-card-caption {
    left: 18px;
    right: 18px;
    bottom: 18px;
    gap: 4px;
  }

  .news-section {
    padding: 48px 16px 56px;
  }

  .news-section-title {
    margin-bottom: 32px;
  }

  .news-featured-body {
    left: 20px;
    bottom: 24px;
    max-width: calc(100% - 40px);
  }

  .news-item {
    padding: 16px;
    gap: 14px;
  }

  .news-item-thumb {
    width: 96px;
    height: 64px;
  }

  .news-item-title {
    font-size: 15px;
  }

  .news-page-main {
    padding: 32px 16px 56px;
  }

  .search-page-main {
    padding: 24px 16px 56px;
  }

  .search-page-item {
    flex-direction: column;
    gap: 16px;
    padding: 16px;
  }

  .search-page-thumb {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 10;
  }

  .search-page-title {
    font-size: 17px;
  }

  .search-page-form {
    flex-wrap: wrap;
    padding: 12px;
  }

  .search-page-submit {
    width: 100%;
  }

  .news-page-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .news-card-title {
    font-size: 17px;
  }

  .news-pagination .pagination > li > a,
  .news-pagination .pagination > li > span {
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    font-size: 13px;
  }

  .news-detail-main {
    padding: 8px 16px 56px;
  }

  .faq-hero {
    padding: 40px 16px 24px;
  }

  .faq-main,
  .faq-detail-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .faq-detail-layout {
    flex-direction: column;
    gap: 16px;
  }

  .faq-detail-aside {
    position: static;
    flex: none;
    width: 100%;
    max-height: none;
  }

  .faq-aside-nav {
    max-height: 320px;
  }

  .faq-main {
    padding-bottom: 56px;
  }

  .faq-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .faq-cat-card {
    min-height: 120px;
    padding: 18px 16px;
  }

  .faq-cats--tabs .faq-cat-card {
    min-height: 96px;
  }

  .faq-cat-title {
    font-size: 16px;
  }

  .faq-list-heading,
  .faq-item {
    padding-left: 16px;
    padding-right: 16px;
  }

  .faq-detail-card {
    padding: 20px 18px 24px;
  }

  .service-main {
    padding: 32px 16px 72px;
  }

  .service-tabs {
    margin-bottom: 28px;
  }

  .service-form-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .service-form-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .service-btn {
    width: 100%;
  }

  .terms-main {
    padding: 24px 16px 72px;
  }

  .terms-layout {
    flex-direction: column;
    gap: 16px;
  }

  .terms-nav {
    position: static;
    flex: none;
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .terms-nav-item {
    flex: 1 1 calc(50% - 4px);
    min-width: 140px;
    text-align: center;
    padding: 12px 10px;
    font-size: 14px;
  }

  .terms-panel {
    padding: 24px 18px 28px;
  }

  .terms-panel-title {
    font-size: 20px;
  }

  .about-banner-copy {
    padding: 0 16px;
  }

  .about-banner-title {
    font-size: clamp(26px, 8vw, 34px);
  }

  .about-banner-desc {
    max-width: 100%;
    font-size: 13px;
  }

  .about-banner-desc-main,
  .about-banner-desc-accent {
    display: inline;
  }

  .about-banner-cta {
    min-width: 112px;
    height: 38px;
    padding: 0 22px;
    font-size: 14px;
  }

  .about-nav-inner {
    justify-content: flex-start;
    padding: 0 16px;
    gap: 0;
  }

  .about-nav-link {
    padding: 14px 16px;
    font-size: 14px;
  }

  .about-section {
    padding: 48px 0;
  }

  .about-container {
    padding: 0 16px;
  }

  .about-section--culture {
    padding: 48px 0 0;
  }

  .about-culture-hero-head {
    margin-bottom: 28px;
    padding: 0 20px;
  }

  .about-culture-hero {
    min-height: 0;
    padding: 72px 20px 48px;
  }

  .about-culture-statements {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .about-culture-statement,
  .about-culture-statement--vision {
    padding: 0;
    border-left: 0;
  }

  .about-culture-statement--vision {
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.4);
  }

  .about-culture-values {
    padding: 48px 20px 64px;
  }

  .about-culture-values-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding-bottom: 18px;
  }

  .about-culture-values-summary {
    text-align: left;
    max-width: none;
  }

  .about-culture-value-toggle {
    grid-template-columns: 36px minmax(0, 1fr) 36px;
    gap: 10px 12px;
    padding: 22px 0;
  }

  .about-culture-value-panel-inner {
    padding: 20px 18px;
    margin-bottom: 20px;
  }

  .about-intro-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .about-section--history {
    padding: 64px 0 0;
    min-height: 0;
    background-position: center calc(100% + 40px);
  }

  .about-history {
    grid-template-columns: 1fr;
    gap: 24px;
    min-height: 0;
    padding: 0;
  }

  .about-history-main {
    min-height: 0;
    padding-bottom: 0;
  }

  .about-history-controls {
    margin-top: clamp(120px, 22vh, 200px);
    padding-top: 20px;
    padding-bottom: 28px;
  }

  .about-history-side {
    padding-top: 0;
    padding-right: 0;
  }

  .about-history-years {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 4px;
    max-height: none;
    margin-top: 0;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 4px;
  }

  .about-history-year-btn {
    flex: 0 0 auto;
    padding: 8px 12px;
  }

  .about-history-year-btn.is-active .about-history-year-btn-text {
    font-size: 24px;
  }

  .about-history-main-head {
    margin-bottom: 28px;
  }

  .about-history-viewport {
    min-height: 240px;
  }

  .about-history-track {
    min-height: 240px;
  }

  .about-history-card {
    width: min(260px, 82vw);
    padding: 0 32px;
  }

  .about-history-card-axis::before {
    left: -32px;
    right: -32px;
  }

  .about-history-card:last-child .about-history-card-axis::before {
    right: calc(-32px - 30vw);
  }

  .about-history-card-month {
    margin-bottom: 20px;
  }

  .about-history-card-month-num {
    font-size: 26px;
  }

  .download-main {
    padding: 24px 16px 72px;
  }

  .download-layout {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
  }

  .download-sidebar {
    position: static;
    flex: none;
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .download-sidebar-link {
    flex: 1 1 calc(50% - 4px);
    min-width: 140px;
    text-align: center;
    box-shadow: none;
  }

  .download-sidebar-link.is-active {
    box-shadow: none;
    border: 1px solid rgba(35, 85, 152, 0.25);
  }

  .download-content {
    width: 100%;
    max-width: none;
    flex: none;
    box-sizing: border-box;
    padding: 24px 18px 28px;
  }

  .download-content-title {
    margin-bottom: 20px;
    font-size: 22px;
  }

  .download-video-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .download-doc-item {
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 14px;
    padding: 18px 16px;
  }

  .download-doc-icon {
    width: 44px;
    height: 44px;
  }

  .download-doc-body {
    flex: 1;
    min-width: 0;
  }

  .download-doc-title {
    margin-bottom: 0;
  }

  .download-doc-btn {
    flex: 1 0 100%;
    width: 100%;
  }

  .opensource-main {
    padding: 24px 16px 72px;
  }

  .opensource-layout {
    flex-direction: column;
    gap: 16px;
  }

  .opensource-sidebar {
    position: static;
    flex: none;
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .opensource-sidebar-link {
    flex: 1 1 calc(50% - 4px);
    min-width: 120px;
    text-align: center;
    box-shadow: none;
  }

  .opensource-sidebar-link.is-active {
    box-shadow: none;
    border: 1px solid rgba(35, 85, 152, 0.25);
  }

  .opensource-content {
    padding: 24px 18px 28px;
  }

  .opensource-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .opensource-search {
    max-width: none;
  }

  .opensource-sort {
    justify-content: space-between;
  }

  .opensource-grid {
    grid-template-columns: 1fr;
  }

  .news-content {
    padding: 16px 18px;
  }

  .news-content .title {
    font-size: 20px;
    line-height: 1.45;
  }

  .news-content .infos {
    margin-bottom: 32px;
  }

  .news-content .htmlContent {
    font-size: 15px;
  }

  .partners-section {
    padding: 48px 16px 56px;
  }

  .partners-title {
    margin-bottom: 32px;
  }

  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .partners-item {
    height: 72px;
    padding: 12px 16px;
  }

  .partners-item img {
    max-height: 36px;
  }

  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px 16px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .search-overlay {
    padding: calc(var(--header-height) + 16px) 16px 16px;
  }

  .search-modal {
    padding: 20px 20px 24px;
    border-radius: 10px;
  }

  .search-modal-title {
    font-size: 17px;
  }

  .search-result-list {
    max-height: 50vh;
  }
}
/* ========== 关节产品页（独立于机器人产品） ========== */
.page-product-joint .joint-intro {
  padding: 88px 40px 72px;
  background: #fff;
  color: #1a2332;
}

.joint-intro-inner {
  max-width: var(--layout-content);
  margin: 0 auto;
  text-align: center;
}

.joint-intro-title {
  margin: 0 0 24px;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.joint-intro-desc {
  margin: 0 auto 48px;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.8;
  color: rgba(26, 35, 50, 0.72);
}

.joint-cert {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.joint-cert-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-end;
  gap: 36px 48px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.joint-cert-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  max-width: 140px;
}

.joint-cert-item img {
  display: block;
  max-width: 120px;
  max-height: 96px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.joint-cert-item span {
  font-size: 13px;
  color: rgba(26, 35, 50, 0.65);
  text-align: center;
}

.page-product-joint .joint-feature {
  padding: 80px 0 96px;
  background: #f5f7fa;
  color: #1a2332;
  overflow: hidden;
}

.joint-feature-inner {
  max-width: none;
  margin: 0;
}

/* 与站点头部同宽：layout-max + 两侧 gutter */
.page-product-joint .joint-feature-head {
  max-width: var(--layout-max);
  margin: 0 auto 36px;
  padding: 0 var(--layout-gutter);
}

.joint-feature-head-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 16px;
  max-width: 420px;
}

.page-product-joint .joint-feature-head .product-feature-subtitle {
  margin: 0;
  max-width: none;
  text-align: right;
}

.joint-feature-nav {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.joint-feature-nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid #c9cdd3;
  background: #fff;
  color: #1a2332;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.joint-feature-nav-btn:hover:not(:disabled) {
  border-color: #1a2332;
  background: #f5f7fa;
}

.joint-feature-nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.joint-feature-slider {
  position: relative;
  width: 100%;
}

.joint-feature-viewport {
  overflow: hidden;
  --jf-gap: 20px;
  /* active 卡宽 = 主体宽（与头部内容区一致） */
  --jf-card: min(var(--layout-content), calc(100vw - 2 * var(--layout-gutter)));
  --jf-card-h: clamp(460px, 52vw, 580px);
  /* 固定高度，避免切换时两侧半高交叉动画把容器“抽矮”导致抖动 */
  height: var(--jf-card-h);
}

.joint-feature-track {
  display: flex;
  align-items: flex-start;
  gap: var(--jf-gap);
  height: 100%;
  will-change: transform;
  transition: transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}

.joint-feature-card {
  flex: 0 0 var(--jf-card);
  width: var(--jf-card);
  max-width: var(--jf-card);
  display: grid;
  grid-template-columns: minmax(260px, 0.38fr) minmax(0, 1fr);
  height: calc(var(--jf-card-h) / 2);
  background: #111;
  opacity: 0.55;
  transition: opacity 0.45s ease, height 0.45s ease;
  overflow: hidden;
}

.joint-feature-card.is-active {
  height: var(--jf-card-h);
  opacity: 1;
}

.joint-feature-card.is-clone {
  pointer-events: none;
}

.joint-feature-card-copy {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(28px, 3.2vw, 44px);
  color: #fff;
  background: #1a1a1a;
  min-width: 0;
}

.joint-feature-card-index {
  display: block;
  margin-bottom: auto;
  padding-bottom: 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.55);
}

.joint-feature-card-title {
  margin: 0 0 18px;
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
}

.joint-feature-card-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.72);
}

.joint-feature-card-media {
  min-height: 100%;
  background: #0b1524;
  overflow: hidden;
}

.joint-feature-card-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.joint-list-main {
  padding: 56px 40px 80px;
  background: #f7f8fa;
}

.joint-list-inner {
  max-width: var(--layout-content);
  margin: 0 auto;
}

.joint-list-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.joint-list-empty {
  grid-column: 1 / -1;
  margin: 40px 0;
  text-align: center;
  color: rgba(26, 35, 50, 0.55);
}

.joint-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  color: inherit;
  text-decoration: none;
  overflow: hidden;
  border: 1px solid rgba(26, 35, 50, 0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.joint-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(15, 30, 55, 0.1);
}

.joint-card-media {
  aspect-ratio: 4 / 3;
  background: #e8eef5;
  overflow: hidden;
}

.joint-card-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.joint-card-body {
  padding: 20px 22px 24px;
}

.joint-card-title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
}

.joint-card-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(26, 35, 50, 0.58);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (max-width: 960px) {
  .page-product-joint .joint-intro {
    padding-left: 24px;
    padding-right: 24px;
  }

  .page-product-joint .joint-feature-head {
    padding: 0 24px;
  }

  .joint-feature-head-right {
    align-items: flex-start;
    max-width: none;
    margin-left: 0;
  }

  .page-product-joint .joint-feature-head .product-feature-subtitle {
    text-align: left;
  }

  .joint-feature-viewport {
    --jf-card: calc(100vw - 48px);
    height: auto;
  }

  .joint-feature-track {
    height: auto;
  }

  .joint-feature-card {
    grid-template-columns: 1fr;
    height: auto;
  }

  .joint-feature-card.is-active {
    height: auto;
  }

  .joint-feature-card-media {
    min-height: 220px;
    aspect-ratio: 16 / 10;
  }

  .joint-list-main {
    padding: 40px 20px 64px;
  }

  .joint-list-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (max-width: 640px) {
  .joint-cert-list {
    gap: 24px;
  }

  .joint-list-grid {
    grid-template-columns: 1fr;
  }
}