/* ============================================
   Ground-Space 海外官网 全局样式
   设计规范：品牌蓝 #0D6FB8 + 品牌橙 #EA5516
   风格：简洁现代、圆角卡片、柔和渐变、与 APP 一致
   ============================================ */

/* ========== 1. CSS 变量 ========== */
:root {
  /* 品牌主色 */
  --color-primary: #0D6FB8;
  --color-primary-light: #3A8DC8;
  --color-primary-lighter: #7AB5DD;
  --color-primary-pale: #DCE9F7;
  
  /* 品牌辅色 */
  --color-accent: #EA5516;
  --color-accent-light: #F27A4B;
  --color-accent-lighter: #F8A382;
  --color-accent-pale: #FDE8DD;
  
  /* 中性色 */
  --color-dark: #2C3E50;
  --color-dark-gray: #4A5568;
  --color-mid-gray: #718096;
  --color-light-gray: #A0AEC0;
  --color-lighter-gray: #E2E8F0;
  --color-very-light-gray: #F7FAFC;
  --color-white: #FFFFFF;
  
  /* 字体（Inter 无 CJK 字形，中文/日文/韩文回退到系统字体） */
  --font-family: 'Inter', 'PingFang SC', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Noto Sans CJK JP', 'Apple SD Gothic Neo', 'Malgun Gothic', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-title: 'Inter', 'PingFang SC', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Noto Sans CJK JP', 'Apple SD Gothic Neo', 'Malgun Gothic', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* 字号 */
  --fs-display: clamp(2.25rem, 5vw, 3.5rem);
  --fs-h1: clamp(1.75rem, 4vw, 2.5rem);
  --fs-h2: clamp(1.5rem, 3vw, 2rem);
  --fs-h3: clamp(1.25rem, 2vw, 1.5rem);
  --fs-h4: 1.125rem;
  --fs-body: 1rem;
  --fs-body-sm: 0.875rem;
  --fs-caption: 0.75rem;
  
  /* 字重 */
  --fw-bold: 700;
  --fw-semibold: 600;
  --fw-medium: 500;
  --fw-regular: 400;
  --fw-light: 300;
  
  /* 间距 */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  
  /* 圆角 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgba(13, 111, 184, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(13, 111, 184, 0.1), 0 2px 4px -2px rgba(13, 111, 184, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(13, 111, 184, 0.1), 0 4px 6px -4px rgba(13, 111, 184, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(13, 111, 184, 0.1), 0 8px 10px -6px rgba(13, 111, 184, 0.1);
  
  /* 渐变 */
  --gradient-blue: linear-gradient(135deg, #0D6FB8 0%, #3A8DC8 100%);
  --gradient-orange: linear-gradient(135deg, #EA5516 0%, #F27A4B 100%);
  --gradient-hero: linear-gradient(135deg, #0D6FB8 0%, #1A7ABF 40%, #EA5516 100%);
  --gradient-warm: linear-gradient(180deg, #DCE9F7 0%, #FDE8DD 100%);
  
  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
  
  /* 容器 */
  --container-max: 1200px;
  --container-pad: 1.5rem;
}

/* ========== 2. 重置与基础 ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-light);
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: var(--fw-bold);
  line-height: 1.25;
  color: var(--color-dark);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-dark-gray);
}

/* ========== 3. 容器与布局 ========== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

.section {
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-4xl);
}

.section-sm {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-title h2 {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-sm);
}

.section-title p {
  color: var(--color-mid-gray);
  font-size: var(--fs-body-sm);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-title .accent-line {
  display: inline-block;
  width: 48px;
  height: 3px;
  background: var(--gradient-blue);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

/* ========== 4. 导航栏 ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: var(--fw-bold);
  font-size: var(--fs-h4);
  color: var(--color-primary);
}

.navbar-logo img {
  height: 40px;
  width: auto;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.navbar-menu a {
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-medium);
  color: var(--color-dark-gray);
  position: relative;
  padding: var(--space-sm) 0;
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-blue);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

.navbar-menu a:hover::after,
.navbar-menu a.active::after {
  transform: scaleX(1);
}

.navbar-menu a.active {
  color: var(--color-primary);
}

/* 语言切换（地球图标下拉菜单） */
.navbar-menu .lang-switch {
  position: relative;
  display: flex;
  align-items: center;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--color-lighter-gray);
  border-radius: var(--radius-full);
  background: var(--color-very-light-gray);
  color: var(--color-dark-gray);
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.08em;
  transition: all var(--transition-fast);
}

.lang-btn:hover,
.lang-switch.open .lang-btn {
  border-color: var(--color-primary-pale);
  background: var(--color-primary-pale);
  color: var(--color-primary);
}

.lang-btn .fa-chevron-down {
  font-size: 0.65em;
  transition: transform var(--transition-fast);
}

.lang-switch.open .lang-btn .fa-chevron-down {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 170px;
  margin: 0;
  padding: 0.4rem;
  list-style: none;
  background: var(--color-white);
  border: 1px solid var(--color-lighter-gray);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 1100;
}

.lang-switch.open .lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-menu a {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: var(--fs-body-sm);
  color: var(--color-dark-gray);
}

.lang-menu a::after {
  display: none;
}

.lang-menu a i {
  visibility: hidden;
  font-size: 0.8em;
  color: var(--color-primary);
}

.lang-menu a:hover {
  background: var(--color-primary-pale);
  color: var(--color-primary);
}

.lang-menu a.current {
  color: var(--color-primary);
  font-weight: var(--fw-semibold);
}

.lang-menu a.current i {
  visibility: visible;
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.navbar-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ========== 5. Hero 区域 ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  color: var(--color-white);
  overflow: hidden;
  isolation: isolate;
}

/* 无线网格画布 */
.hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* 明暗层：压暗左侧保证文字对比，右侧保留通透 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    radial-gradient(ellipse 85% 70% at 84% 26%, rgba(255, 255, 255, 0.14) 0%, transparent 58%),
    linear-gradient(100deg, rgba(4, 38, 68, 0.62) 0%, rgba(4, 38, 68, 0.3) 42%, rgba(4, 38, 68, 0) 68%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 80px;
  z-index: 4;
  background: var(--color-white);
  clip-path: ellipse(60% 100% at 50% 100%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 3;
  padding-top: 132px;
  padding-bottom: 108px;
}

.hero-content {
  max-width: 720px;
}

/* 眉题样式：无底框，小号大写字距文字 + 品牌橙点 */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.18);
  margin-bottom: var(--space-xl);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent-light);
  border-radius: var(--radius-full);
  box-shadow: 0 0 0 4px rgba(242, 122, 75, 0.22);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.hero h1 {
  font-size: var(--fs-display);
  color: var(--color-white);
  text-shadow: 0 2px 8px rgba(0,0,0,0.2);
  margin-bottom: var(--space-lg);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #FFE4D6 0%, #FFFFFF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: rgba(255,255,255,0.92);
  opacity: 0.9;
  text-shadow: 0 1px 3px rgba(0,0,0,0.15);
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Hero 关键数据 */
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-lg);
  max-width: 660px;
  margin: var(--space-2xl) 0 0;
  padding: var(--space-lg) 0 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
}

.hero-metrics li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.metric-value {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: var(--fw-bold);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-white);
}

.metric-label {
  font-size: var(--fs-caption);
  line-height: 1.35;
  color: rgba(255, 255, 255, 0.78);
}

/* ========== 6. 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.875rem 1.75rem;
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--color-primary-light);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn-accent:hover {
  background: var(--color-accent-light);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.25);
  color: var(--color-white);
  transform: translateY(-2px);
}

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

.btn-white:hover {
  background: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(3, 28, 50, 0.34);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--fs-h4);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--fs-caption);
}

/* ========== 7. 卡片 ========== */
.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-lighter-gray);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-primary-pale);
}

.card-feature {
  text-align: left;
}

.card-feature .card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  background: var(--color-primary-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: var(--space-lg);
  transition: all var(--transition-base);
}

.card-feature:hover .card-icon {
  background: var(--color-primary);
  transform: scale(1.1);
}

.card-feature h3 {
  font-size: var(--fs-h4);
  margin-bottom: var(--space-sm);
}

.card-feature p {
  font-size: var(--fs-body-sm);
  margin-bottom: 0;
}

/* ========== 8. 网格系统 ========== */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

/* ========== 9. 数据/统计 ========== */
.stats-bar {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: var(--space-2xl) 0;
  border-radius: var(--radius-xl);
}

/* 统计条区块：与下方区块收紧间距，避免双倍留白 */
.section:has(.stats-bar) {
  padding-bottom: 0;
}

.section:has(.stats-bar) + .section {
  padding-top: var(--space-3xl);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stat-item .stat-number {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: var(--fw-bold);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-item .stat-label {
  font-size: var(--fs-caption);
  opacity: 0.85;
  letter-spacing: 0.02em;
}

/* ========== 10. 产品/项目卡片 ========== */
.media-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-lighter-gray);
  transition: all var(--transition-base);
}

.media-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
}

.media-card .card-image {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  font: inherit;
  text-align: left;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--color-primary-pale);
  -webkit-appearance: none;
  appearance: none;
}

.media-card .card-image.gallery-trigger {
  cursor: zoom-in;
}

.media-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.media-card:hover .card-image img {
  transform: scale(1.08);
}

/* ---- 多图产品角标 ---- */
.gallery-badge {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  background: rgba(44, 62, 80, 0.72);
  color: var(--color-white);
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
  line-height: 1;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.gallery-badge svg {
  width: 14px;
  height: 14px;
}

/* ---- 悬停放大提示 ---- */
.gallery-zoom {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13, 111, 184, 0.55);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.gallery-zoom svg {
  width: 46px;
  height: 46px;
  color: var(--color-white);
  transform: scale(0.85);
  transition: transform var(--transition-base);
}

.media-card .card-image.gallery-trigger:hover .gallery-zoom,
.media-card .card-image.gallery-trigger:focus-visible .gallery-zoom {
  opacity: 1;
}

.media-card .card-image.gallery-trigger:hover .gallery-zoom svg,
.media-card .card-image.gallery-trigger:focus-visible .gallery-zoom svg {
  transform: scale(1);
}

.media-card .card-image.gallery-trigger:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: -3px;
}

@media (hover: none) {
  .gallery-zoom {
    display: none;
  }
}

/* ========== Lightbox 多图查看器 ========== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: rgba(15, 27, 40, 0.94);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

body.lightbox-open {
  overflow: hidden;
}

.lightbox-stage {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: min(1100px, 92vw);
  max-height: 76vh;
}

.lightbox-img {
  max-width: 100%;
  max-height: 76vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-lg);
  background: var(--color-white);
  box-shadow: var(--shadow-xl);
  transform: scale(0.96);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.lightbox.is-open .lightbox-img {
  transform: scale(1);
}

.lightbox-img.is-swapping {
  opacity: 0;
}

.lightbox-close {
  position: absolute;
  top: clamp(1rem, 3vw, 2rem);
  right: clamp(1rem, 3vw, 2rem);
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.lightbox-close svg {
  width: 22px;
  height: 22px;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.lightbox-prev {
  left: clamp(0.75rem, 3vw, 2.5rem);
}

.lightbox-next {
  right: clamp(0.75rem, 3vw, 2.5rem);
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.22);
}

.lightbox-nav svg {
  width: 26px;
  height: 26px;
}

.lightbox-nav[hidden] {
  display: none;
}

.lightbox-bar {
  position: absolute;
  left: 50%;
  bottom: clamp(1rem, 3vw, 2rem);
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  max-width: 92vw;
}

.lightbox-counter {
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-medium);
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.03em;
}

.lightbox-thumbs {
  display: flex;
  gap: 8px;
  padding: 8px;
  max-width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  overflow-x: auto;
  scrollbar-width: none;
}

.lightbox-thumbs::-webkit-scrollbar {
  display: none;
}

.lightbox-thumb {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  padding: 0;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.1);
  cursor: pointer;
  opacity: 0.5;
  transition: opacity var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.lightbox-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.lightbox-thumb:hover {
  opacity: 0.85;
}

.lightbox-thumb.is-active {
  opacity: 1;
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .lightbox-stage,
  .lightbox-img {
    max-height: 68vh;
  }
  .lightbox-nav {
    width: 44px;
    height: 44px;
  }
  .lightbox-thumb {
    width: 46px;
    height: 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .lightbox,
  .lightbox-img,
  .lightbox-close,
  .lightbox-nav,
  .gallery-zoom,
  .gallery-zoom svg {
    transition: none;
  }
  .lightbox-img,
  .lightbox.is-open .lightbox-img {
    transform: none;
  }
  .lightbox-close:hover {
    transform: none;
  }
}

.media-card .card-body {
  padding: var(--space-lg);
}

.media-card .card-tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: var(--fw-semibold);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-pale);
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.media-card h3 {
  font-size: var(--fs-h4);
  margin-bottom: var(--space-xs);
}

.media-card p {
  font-size: var(--fs-body-sm);
  color: var(--color-mid-gray);
  margin-bottom: 0;
}

/* ========== 11. Banner 区 ========== */
.page-banner {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--gradient-hero);
  color: var(--color-white);
  padding: 104px 0 44px;
  text-align: left;
}

/* 网格画布 */
.banner-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* 明暗层：压暗左侧保证文字对比，右侧保留通透 */
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    radial-gradient(ellipse 75% 80% at 88% 18%, rgba(255, 255, 255, 0.14) 0%, transparent 60%),
    linear-gradient(100deg, rgba(4, 38, 68, 0.66) 0%, rgba(4, 38, 68, 0.34) 46%, rgba(4, 38, 68, 0) 74%);
  pointer-events: none;
}

.page-banner .container {
  position: relative;
  z-index: 3;
}

/* 面包屑 */
.banner-crumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--space-sm);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.72);
}

.banner-crumb a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.banner-crumb a:hover,
.banner-crumb a:focus-visible {
  color: var(--color-white);
  text-decoration: underline;
}

.banner-crumb .sep {
  opacity: 0.5;
}

.banner-crumb [aria-current="page"] {
  color: var(--color-white);
  font-weight: var(--fw-semibold);
}

/* 分类标签 */
.banner-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.26);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 0.6875rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.banner-eyebrow i {
  color: var(--color-accent-lighter);
}

.page-banner h1 {
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  color: var(--color-white);
  max-width: 780px;
  letter-spacing: -0.02em;
}

.page-banner p {
  color: rgba(255, 255, 255, 0.9);
  margin-top: 0.25rem;
  font-size: var(--fs-body);
}

.page-banner .banner-lead {
  font-size: var(--fs-body);
  line-height: 1.55;
  max-width: 620px;
}

/* 要点条 */
.banner-facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-lg);
  max-width: 860px;
  margin: var(--space-md) 0 0;
  padding: var(--space-sm) 0 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
}

.banner-facts li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-medium);
  color: rgba(255, 255, 255, 0.94);
}

.banner-facts li i {
  font-size: 0.95em;
  color: var(--color-accent-lighter);
}

/* ========== 12. CTA 区 ========== */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-accent) 100%);
  color: var(--color-white);
  text-align: center;
  border-radius: var(--radius-2xl);
  padding: var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.cta-section h2 {
  font-size: var(--fs-h2);
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== 13. 视频区 ========== */
.video-section {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-dark);
  aspect-ratio: 16/9;
}

.video-section video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-section .video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 50%);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity var(--transition-base);
  /* 播放后遮罩透明时不再挡住视频原生控制条 */
  pointer-events: none;
}

.video-section .video-play-btn {
  pointer-events: auto;
}

.video-section.playing .video-overlay {
  opacity: 0;
}

.video-play-btn {
  width: 80px;
  height: 80px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-xl);
}

.video-play-btn:hover {
  transform: scale(1.1);
  background: var(--color-accent);
}

.video-play-btn svg {
  width: 32px;
  height: 32px;
  fill: var(--color-primary);
  margin-left: 4px;
  transition: fill var(--transition-base);
}

.video-play-btn:hover svg {
  fill: var(--color-white);
}

/* ========== 14. 资质/认证 ========== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-lg);
}

.cert-item {
  background: var(--color-white);
  border: 1px solid var(--color-lighter-gray);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  transition: all var(--transition-base);
}

.cert-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.cert-item .cert-icon {
  font-size: 32px;
  margin-bottom: var(--space-sm);
}

.cert-item h4 {
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-semibold);
  margin-bottom: 2px;
}

.cert-item span {
  font-size: var(--fs-caption);
  color: var(--color-mid-gray);
}

/* ========== 15. 技术特性 ========== */
.tech-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
  margin-bottom: var(--space-4xl);
}

.tech-feature.reverse {
  direction: rtl;
}

.tech-feature.reverse > * {
  direction: ltr;
}

.tech-feature-content h3 {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-md);
  color: var(--color-dark);
}

.tech-feature-content p {
  margin-bottom: var(--space-md);
}

.tech-feature-content ul {
  margin-bottom: var(--space-lg);
}

.tech-feature-content ul li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: var(--space-sm);
  color: var(--color-dark-gray);
  font-size: var(--fs-body-sm);
}

.tech-feature-content ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  width: 22px;
  height: 22px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: var(--fw-bold);
}

.tech-feature-image {
  aspect-ratio: 4/3;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-primary-pale);
}

.tech-feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========== 16. 联系表单 ========== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.contact-form {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-lighter-gray);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-medium);
  margin-bottom: var(--space-sm);
  color: var(--color-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: inherit;
  font-size: var(--fs-body-sm);
  border: 1px solid var(--color-lighter-gray);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  background: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-pale);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* 静态站点表单提示（mailto 说明 / noscript 兜底） */
.form-hint {
  font-size: var(--fs-caption);
  color: var(--color-mid-gray);
  margin-top: var(--space-md);
  margin-bottom: 0;
}

.form-hint a {
  color: var(--color-primary);
  font-weight: var(--fw-medium);
}

.contact-info {
  padding-top: var(--space-xl);
}

.contact-info h3 {
  font-size: var(--fs-h3);
  margin-bottom: var(--space-lg);
}

.contact-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-lighter-gray);
}

.contact-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.contact-item .ci-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--color-primary-pale);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.contact-item h4 {
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-semibold);
  margin-bottom: 4px;
}

.contact-item p {
  font-size: var(--fs-body-sm);
  color: var(--color-mid-gray);
  margin-bottom: 0;
}

/* ========== 17. 地图 ========== */
.map-wrapper {
  margin-top: var(--space-2xl);
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--color-primary-pale);
  position: relative;
}

.map-wrapper iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ========== 18. 标签页（产品分类） ========== */
.tabs {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-medium);
  border-radius: var(--radius-full);
  background: var(--color-very-light-gray);
  color: var(--color-dark-gray);
  transition: all var(--transition-base);
  border: 1px solid transparent;
}

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

.tab-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

/* 灯具种类二级标签 */
.tabs-label {
  margin: 0 0 0.6rem;
  font-size: 0.78rem;
  font-weight: var(--fw-semibold, 600);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  color: var(--color-dark-gray);
}

.tabs-sub {
  margin-bottom: var(--space-lg, 1.5rem);
}

.tabs-sub .tab-btn {
  padding: 0.45rem 0.95rem;
  font-size: 0.85rem;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== 19. 滚动动效 ========== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== 20. 页脚 ========== */
.footer {
  background: linear-gradient(180deg, var(--color-dark) 0%, #1a2a3a 100%);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-4xl) 0 var(--space-2xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand img {
  height: 40px;
  margin-bottom: var(--space-md);
  filter: brightness(0) invert(1);
}

.footer-brand p {
  font-size: var(--fs-body-sm);
  margin-bottom: var(--space-lg);
  color: rgba(255, 255, 255, 0.55);
}

.footer-social {
  display: flex;
  gap: var(--space-sm);
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.7);
  transition: all var(--transition-base);
}

.footer-social a:hover {
  background: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

.footer-col h4 {
  color: var(--color-white);
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-lg);
}

.footer-col ul li {
  margin-bottom: var(--space-sm);
}

.footer-col ul li a {
  font-size: var(--fs-body-sm);
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--fs-caption);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 0;
}

/* ========== 21. 项目轮播/网格 ========== */
.project-filter {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

/* ========== 22. 返回顶部 ========== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-4px);
}

/* ========== 23. 分隔区背景 ========== */
.bg-warm {
  background: var(--gradient-warm);
}

.bg-primary-pale {
  background: var(--color-primary-pale);
}

.bg-white {
  background: var(--color-white);
}

/* ========== 24. 响应式 ========== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .grid-6 { grid-template-columns: repeat(3, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-metrics { grid-template-columns: repeat(2, 1fr); gap: var(--space-md) var(--space-xl); }
  .contact-layout { grid-template-columns: 1fr; }
  .tech-feature { grid-template-columns: 1fr; }
  .tech-feature.reverse { direction: ltr; }
}

@media (max-width: 768px) {
  .navbar-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-md);
    border-bottom: 1px solid var(--color-lighter-gray);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  
  .navbar-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .navbar-menu a {
    padding: var(--space-md);
    width: 100%;
    text-align: center;
    border-radius: var(--radius-md);
  }
  
  .navbar-menu a:hover {
    background: var(--color-primary-pale);
  }
  
  .navbar-toggle {
    display: flex;
  }

  .navbar-menu .lang-switch {
    border-top: 1px solid var(--color-lighter-gray);
    padding-top: var(--space-md);
    margin-top: var(--space-xs);
  }

  .navbar-menu .lang-switch .lang-btn {
    display: none;
  }

  .navbar-menu .lang-switch .lang-menu {
    position: static;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    min-width: 0;
    padding: 0;
    border: 0;
    box-shadow: none;
    background: transparent;
    transform: none;
  }

  /* 菜单打开时才显示语言行（随菜单整体显隐） */
  .navbar-menu.active .lang-menu {
    opacity: 1;
    visibility: visible;
  }

  .navbar-menu .lang-switch .lang-menu a {
    border: 1px solid var(--color-lighter-gray);
    border-radius: var(--radius-full);
    padding: 0.45rem 1.1rem;
  }

  /* 药丸布局下 check 不再预留占位，未选中项文字才能真正居中 */
  .navbar-menu .lang-switch .lang-menu a i {
    display: none;
  }

  .navbar-menu .lang-switch .lang-menu a.current i {
    display: inline-block;
  }
  
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-6 { grid-template-columns: repeat(2, 1fr); }
  
  .section {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
  }
  
  .cta-section {
    padding: var(--space-2xl) var(--space-lg);
  }
  
  .page-banner {
    padding: 96px 0 36px;
  }

  .banner-facts {
    gap: var(--space-xs) var(--space-md);
    margin-top: var(--space-md);
    padding-top: var(--space-sm);
  }

  .hero .container {
    padding-top: 104px;
    padding-bottom: 72px;
  }

  .hero-subtitle {
    margin-bottom: var(--space-xl);
  }

  .hero-metrics {
    margin-top: var(--space-xl);
    padding-top: var(--space-md);
    gap: var(--space-md) var(--space-lg);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .grid-6 { grid-template-columns: 1fr; }
  
  .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
  
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .section-title h2 {
    font-size: 1.5rem;
  }
}

/* ========== 25. 动画与可访问性 ========== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ========== 26. 工具类 ========== */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-white { color: var(--color-white); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ========== 22. 动效增强（交错入场 / 标题线生长 / hero 分层入场） ========== */

@keyframes gsFadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* hero 内容自上而下分层入场（页面加载播放一次，纯 CSS，不依赖 JS） */
.hero-content > * {
  animation: gsFadeUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.hero-content > .hero-badge { animation-delay: 0.05s; }
.hero-content > h1 { animation-delay: 0.15s; }
.hero-content > .hero-subtitle { animation-delay: 0.3s; }
.hero-content > .hero-actions { animation-delay: 0.45s; }
.hero-content > .hero-metrics { animation-delay: 0.6s; }

/* 板块标题装饰线：出现时从左向右生长（依赖 .visible，由滚动 reveal 添加） */
@keyframes gsAccentGrow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}
.section-title.visible .accent-line {
  transform-origin: left center;
  animation: gsAccentGrow 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.15s both;
}

/* 认证卡片随父级 reveal 交错入场（.visible 仅在 JS 可用时添加，noscript 下静态显示） */
.cert-grid.visible .cert-item {
  animation: gsFadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.cert-grid.visible .cert-item:nth-child(2) { animation-delay: 0.1s; }
.cert-grid.visible .cert-item:nth-child(3) { animation-delay: 0.2s; }
.cert-grid.visible .cert-item:nth-child(4) { animation-delay: 0.3s; }
.cert-grid.visible .cert-item:nth-child(5) { animation-delay: 0.4s; }
.cert-grid.visible .cert-item:nth-child(6) { animation-delay: 0.5s; }

/* 用户偏好减弱动效：全部关闭，内容直接呈现 */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-content > *,
  .section-title.visible .accent-line,
  .cert-grid.visible .cert-item {
    animation: none;
  }
  .media-card .card-image img {
    transition: none;
  }
  .media-card:hover .card-image img {
    transform: none;
  }
}

/* ========== 23. 计数落定 ========== */

/* 场景视频卡交错入场 */
.video-grid.visible .media-card {
  animation: gsFadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.video-grid.visible .media-card:nth-child(2) { animation-delay: 0.12s; }
.video-grid.visible .media-card:nth-child(3) { animation-delay: 0.24s; }
.video-grid.visible .media-card:nth-child(4) { animation-delay: 0.36s; }

/* 统计数字滚动结束时的落定 pop */
.stat-number.gs-counted {
  animation: gsCountPop 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes gsCountPop {
  0% { transform: scale(1); }
  45% { transform: scale(1.12); }
  100% { transform: scale(1); }
}

.stat-number {
  display: inline-block;
}

/* 减弱动态效果：新增动效全部关闭 */
@media (prefers-reduced-motion: reduce) {
  .video-grid.visible .media-card,
  .stat-number.gs-counted {
    animation: none;
  }
}

/* ========== 关注我们二维码（仅中文站 footer 与联系页使用） ========== */
.footer-qr {
  margin-top: var(--space-lg);
}

.footer-qr-title {
  color: var(--color-white);
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-md);
}

.footer-qr-items {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-qr-item {
  margin: 0;
  text-align: center;
  position: relative;
}

.footer-qr-item img {
  display: block;
  width: 88px;
  height: 88px;
  padding: 4px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base);
  transform-origin: bottom center;
  filter: none;
}

.footer-qr-item:hover {
  z-index: 5;
}

.footer-qr-item:hover img {
  transform: scale(1.5);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.footer-qr-item figcaption {
  font-size: var(--fs-caption);
  color: rgba(255, 255, 255, 0.55);
  margin-top: var(--space-xs);
}

.contact-qr {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.contact-qr-item {
  margin: 0;
  text-align: center;
  position: relative;
}

.contact-qr-item img {
  display: block;
  width: 130px;
  height: 130px;
  padding: 5px;
  background: var(--color-white);
  border: 1px solid var(--color-lighter-gray);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base);
}

.contact-qr-item:hover {
  z-index: 5;
}

.contact-qr-item:hover img {
  transform: scale(1.35);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
}

.contact-qr-item figcaption {
  font-size: var(--fs-caption);
  color: var(--color-dark-gray);
  margin-top: var(--space-xs);
}

/* 社交图标按钮（联系页，非中文站） */
.contact-social {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.contact-social a {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-primary-pale);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  transition: all var(--transition-base);
}

.contact-social a:hover {
  color: var(--color-white);
  transform: translateY(-3px);
}

.contact-social a[aria-label="LinkedIn"]:hover { background: #0a66c2; }
.contact-social a[aria-label="Facebook"]:hover { background: #1877f2; }
.contact-social a[aria-label="Instagram"]:hover { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); }
.contact-social a[aria-label="TikTok"]:hover { background: #161823; }

@media (prefers-reduced-motion: reduce) {
  .footer-qr-item img,
  .contact-qr-item img {
    transition: none;
  }
}