/* ===========================
   51短视频 - 主样式表
   dadyapL.cn
   =========================== */

/* ---- CSS变量 ---- */
:root {
  --primary: #e31837;
  --primary-dark: #b81230;
  --primary-light: #ff4d6a;
  --secondary: #1a1a2e;
  --accent: #f5a623;
  --bg-dark: #0d0d1a;
  --bg-card: #16213e;
  --bg-light: #f8f9fa;
  --text-white: #ffffff;
  --text-light: #c8ccd4;
  --text-dark: #1a1a2e;
  --text-muted: #888ea8;
  --border: #2a2a4a;
  --gradient-primary: linear-gradient(135deg, #e31837 0%, #b81230 100%);
  --gradient-dark: linear-gradient(135deg, #0d0d1a 0%, #1a1a2e 100%);
  --gradient-hero: linear-gradient(135deg, #0d0d1a 0%, #1a1a2e 50%, #16213e 100%);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', '微软雅黑', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-white);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font-family: inherit;
  outline: none;
}

/* ---- 容器 ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---- 通用工具类 ---- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.text-muted { color: var(--text-muted); }
.bg-dark { background: var(--bg-dark); }
.bg-card { background: var(--bg-card); }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.py-1 { padding-top: 8px; padding-bottom: 8px; }
.py-2 { padding-top: 16px; padding-bottom: 16px; }
.py-3 { padding-top: 24px; padding-bottom: 24px; }

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(227,24,55,0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(227,24,55,0.6);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

.btn-light {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
}

.btn-light:hover {
  background: rgba(255,255,255,0.2);
  color: #fff;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

/* ---- 标签 ---- */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 600;
}

.badge-primary {
  background: rgba(227,24,55,0.15);
  color: var(--primary);
  border: 1px solid rgba(227,24,55,0.3);
}

.badge-accent {
  background: rgba(245,166,35,0.15);
  color: var(--accent);
  border: 1px solid rgba(245,166,35,0.3);
}

/* ---- 分区标题 ---- */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-label {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(227,24,55,0.1);
  color: var(--primary);
  border: 1px solid rgba(227,24,55,0.3);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-title span {
  color: var(--primary);
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ---- 分割线 ---- */
.divider {
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
  margin: 16px auto;
}

/* ---- 卡片 ---- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(227,24,55,0.3);
}

.card-body {
  padding: 20px;
}

/* ---- 网格 ---- */
.grid {
  display: grid;
  gap: 24px;
}

.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-5 { grid-template-columns: repeat(5, 1fr); }

/* ---- 顶部导航 ---- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(13,13,26,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(13,13,26,0.98);
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 20px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

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

.logo-text {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-white);
  white-space: nowrap;
}

.logo-text span {
  color: var(--primary);
}

/* ---- 导航菜单 ---- */
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary);
  background: rgba(227,24,55,0.1);
}

/* ---- 搜索框 ---- */
.search-bar {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 8px 16px;
  gap: 8px;
  min-width: 200px;
  transition: var(--transition);
}

.search-bar:focus-within {
  border-color: var(--primary);
  background: rgba(227,24,55,0.05);
}

.search-bar input {
  background: transparent;
  border: none;
  color: var(--text-white);
  font-size: 14px;
  width: 100%;
}

.search-bar input::placeholder {
  color: var(--text-muted);
}

.search-bar button {
  background: none;
  color: var(--text-muted);
  font-size: 16px;
  padding: 0;
  transition: var(--transition);
}

.search-bar button:hover {
  color: var(--primary);
}

/* ---- 汉堡菜单 ---- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- 搜索栏下方横条 ---- */
.header-search-bar {
  background: rgba(22,33,62,0.9);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}

.header-search-inner {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-search-inner .search-box {
  flex: 1;
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 10px 20px;
  gap: 10px;
  max-width: 600px;
}

.header-search-inner .search-box input {
  background: transparent;
  border: none;
  color: var(--text-white);
  font-size: 14px;
  width: 100%;
}

.header-search-inner .search-box input::placeholder {
  color: var(--text-muted);
}

.header-search-inner .search-box .search-icon {
  color: var(--text-muted);
  font-size: 16px;
}

.header-search-inner .search-btn {
  background: var(--gradient-primary);
  color: #fff;
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}

.header-search-inner .search-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.hot-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.hot-tags span {
  font-size: 12px;
  color: var(--text-muted);
}

.hot-tags a {
  font-size: 12px;
  color: var(--text-light);
  padding: 3px 10px;
  background: rgba(255,255,255,0.05);
  border-radius: 50px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.hot-tags a:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* ---- Hero Banner ---- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 120px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 0;
}

.hero-bg-img {
  position: absolute;
  inset: 0;
  background-image: url('../images/banners/hero-banner.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.25;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(13,13,26,0.9) 40%, rgba(13,13,26,0.3) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 700px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(227,24,55,0.15);
  border: 1px solid rgba(227,24,55,0.4);
  border-radius: 50px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text-white);
}

.hero-title .highlight {
  color: var(--primary);
  text-shadow: 0 0 30px rgba(227,24,55,0.5);
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-bottom: 40px;
}

.hero-stat-item {
  text-align: center;
}

.hero-stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  display: block;
}

.hero-stat-label {
  font-size: 13px;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---- 视频卡片 ---- */
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(227,24,55,0.4);
}

.video-thumb {
  position: relative;
  overflow: hidden;
  background: #000;
}

.video-thumb img {
  width: 100%;
  aspect-ratio: 9/16;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.video-card:hover .video-thumb img {
  transform: scale(1.05);
}

.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.4);
  opacity: 0;
  transition: var(--transition);
}

.video-card:hover .video-play-btn {
  opacity: 1;
}

.play-icon {
  width: 60px;
  height: 60px;
  background: rgba(227,24,55,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #fff;
  transform: scale(0.8);
  transition: transform 0.3s ease;
  box-shadow: 0 4px 20px rgba(227,24,55,0.5);
}

.video-card:hover .play-icon {
  transform: scale(1);
}

.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 4px;
}

.video-info {
  padding: 14px;
}

.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

.video-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.video-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.video-tag {
  font-size: 11px;
  padding: 2px 8px;
  background: rgba(227,24,55,0.1);
  color: var(--primary);
  border-radius: 50px;
  border: 1px solid rgba(227,24,55,0.2);
}

/* ---- 横向视频卡片 ---- */
.video-card-h {
  display: flex;
  gap: 16px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.video-card-h:hover {
  border-color: rgba(227,24,55,0.3);
  box-shadow: var(--shadow-md);
}

.video-card-h .video-thumb {
  width: 160px;
  flex-shrink: 0;
}

.video-card-h .video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: unset;
}

.video-card-h .video-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* ---- 模块分区 ---- */
.section {
  padding: 80px 0;
}

.section-dark {
  background: var(--bg-dark);
}

.section-card {
  background: var(--bg-card);
}

.section-alt {
  background: linear-gradient(180deg, var(--bg-dark) 0%, #0f1428 100%);
}

/* ---- 功能模块卡片 ---- */
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(227,24,55,0.2);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: rgba(227,24,55,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 16px;
  border: 1px solid rgba(227,24,55,0.2);
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---- 专家卡片 ---- */
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  text-align: center;
}

.expert-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(227,24,55,0.3);
}

.expert-avatar {
  position: relative;
  overflow: hidden;
}

.expert-avatar img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: top;
  transition: transform 0.4s ease;
}

.expert-card:hover .expert-avatar img {
  transform: scale(1.05);
}

.expert-badge {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  white-space: nowrap;
}

.expert-info {
  padding: 20px;
}

.expert-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 4px;
}

.expert-role {
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 10px;
  font-weight: 600;
}

.expert-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}

.expert-awards {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 14px;
}

.expert-award {
  font-size: 11px;
  padding: 3px 10px;
  background: rgba(245,166,35,0.1);
  color: var(--accent);
  border-radius: 50px;
  border: 1px solid rgba(245,166,35,0.2);
}

.expert-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
}

/* ---- 用户评价 ---- */
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 24px;
  transition: var(--transition);
}

.review-card:hover {
  border-color: rgba(227,24,55,0.2);
  box-shadow: var(--shadow-md);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.review-user-info {
  flex: 1;
}

.review-username {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-white);
}

.review-date {
  font-size: 12px;
  color: var(--text-muted);
}

.review-stars {
  color: var(--accent);
  font-size: 14px;
  letter-spacing: 2px;
}

.review-content {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.review-likes {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ---- FAQ ---- */
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
  margin-bottom: 12px;
  transition: var(--transition);
}

.faq-item.active {
  border-color: rgba(227,24,55,0.3);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-white);
  transition: var(--transition);
  gap: 12px;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(227,24,55,0.1);
  border: 1px solid rgba(227,24,55,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ---- 合作品牌 ---- */
.brand-logo-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}

.brand-logo-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 28px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition);
  min-width: 120px;
  text-align: center;
}

.brand-logo-item:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(227,24,55,0.05);
}

/* ---- 社区功能 ---- */
.community-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.community-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
}

.community-card:hover {
  transform: translateY(-4px);
  border-color: rgba(227,24,55,0.3);
  box-shadow: var(--shadow-md);
}

.community-icon {
  font-size: 40px;
  margin-bottom: 12px;
  display: block;
}

.community-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}

.community-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.community-count {
  font-size: 12px;
  color: var(--primary);
  margin-top: 8px;
  font-weight: 600;
}

/* ---- 联系我们 ---- */
.contact-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 28px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

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

.contact-icon {
  width: 40px;
  height: 40px;
  background: rgba(227,24,55,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.contact-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-white);
}

/* ---- 二维码区域 ---- */
.qrcode-section {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.qrcode-item {
  text-align: center;
}

.qrcode-item img {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  margin: 0 auto 8px;
}

.qrcode-label {
  font-size: 12px;
  color: var(--text-muted);
}

/* ---- 社交分享 ---- */
.social-share {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.share-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-light);
}

.share-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.share-btn.weixin { border-color: #07c160; }
.share-btn.weixin:hover { background: #07c160; color: #fff; }
.share-btn.weibo { border-color: #e6162d; }
.share-btn.weibo:hover { background: #e6162d; color: #fff; }
.share-btn.douyin { border-color: #fe2c55; }
.share-btn.douyin:hover { background: #fe2c55; color: #fff; }
.share-btn.bilibili { border-color: #00a1d6; }
.share-btn.bilibili:hover { background: #00a1d6; color: #fff; }

/* ---- 面包屑 ---- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  padding: 16px 0;
}

.breadcrumb a {
  color: var(--text-muted);
}

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

.breadcrumb .sep {
  color: var(--border);
}

.breadcrumb .current {
  color: var(--text-light);
}

/* ---- 页面头部横幅 ---- */
.page-hero {
  background: var(--gradient-hero);
  padding: 120px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(227,24,55,0.08) 0%, transparent 60%);
}

.page-hero h1 {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--text-white);
  margin-bottom: 12px;
  position: relative;
}

.page-hero p {
  font-size: 1rem;
  color: var(--text-muted);
  position: relative;
}

/* ---- 分页 ---- */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.page-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-light);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.page-btn:hover,
.page-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ---- 标签筛选 ---- */
.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.filter-tab {
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 500;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.filter-tab:hover,
.filter-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ---- 统计数字 ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 28px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.stat-item:hover {
  border-color: rgba(227,24,55,0.3);
  transform: translateY(-4px);
}

.stat-num {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary);
  display: block;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
}

/* ---- 底部 ---- */
.site-footer {
  background: #060610;
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo-text {
  font-size: 1.5rem;
  margin-bottom: 16px;
  display: block;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-copyright a {
  color: var(--primary);
}

.footer-update {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-qrcodes {
  display: flex;
  gap: 20px;
  margin-bottom: 40px;
}

.footer-qr-item {
  text-align: center;
}

.footer-qr-item img {
  width: 90px;
  height: 90px;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin: 0 auto 6px;
}

.footer-qr-item span {
  font-size: 11px;
  color: var(--text-muted);
  display: block;
}

/* ---- 滚动到顶部 ---- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  background: var(--gradient-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 15px rgba(227,24,55,0.4);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(227,24,55,0.6);
}

/* ---- 加载动画 ---- */
.lazy-img {
  opacity: 0;
  transition: opacity 0.4s ease;
}

.lazy-img.loaded {
  opacity: 1;
}

/* ---- 通知栏 ---- */
.notice-bar {
  background: var(--gradient-primary);
  padding: 10px 0;
  text-align: center;
  font-size: 13px;
  color: #fff;
  font-weight: 500;
}

.notice-bar a {
  color: #fff;
  text-decoration: underline;
  margin-left: 8px;
}

/* ---- 图片展示 ---- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.gallery-item {
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  position: relative;
}

.gallery-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

/* ---- How-To 步骤 ---- */
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-num {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.step-content h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 6px;
}

.step-content p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---- 响应式 ---- */
@media (max-width: 1200px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 992px) {
  .hero-title { font-size: 2.5rem; }
  .section-title { font-size: 1.8rem; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .main-nav { display: none; }
  .hamburger { display: flex; }
  .search-bar { display: none; }
}

@media (max-width: 768px) {
  .hero-section { padding-top: 100px; }
  .hero-title { font-size: 2rem; }
  .hero-stats { gap: 20px; }
  .hero-stat-num { font-size: 1.5rem; }
  .section { padding: 60px 0; }
  .section-title { font-size: 1.6rem; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-hero h1 { font-size: 1.8rem; }
}

@media (max-width: 576px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 1.6rem; }
  .grid-4 { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .section-title { font-size: 1.4rem; }
  .video-card-h { flex-direction: column; }
  .video-card-h .video-thumb { width: 100%; }
}

/* ---- 移动端菜单 ---- */
.mobile-menu {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: rgba(13,13,26,0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 999;
  padding: 20px;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-light);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.mobile-menu a:hover {
  color: var(--primary);
  background: rgba(227,24,55,0.08);
}

.mobile-search {
  margin-top: 16px;
  display: flex;
  gap: 8px;
}

.mobile-search input {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 10px 16px;
  color: var(--text-white);
  font-size: 14px;
}

.mobile-search input::placeholder {
  color: var(--text-muted);
}

.mobile-search button {
  background: var(--gradient-primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
}

/* ---- 动画 ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-fadeIn {
  animation: fadeIn 0.6s ease forwards;
}

/* ---- 滚动条 ---- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* ---- 选中文字 ---- */
::selection {
  background: rgba(227,24,55,0.3);
  color: #fff;
}

/* ---- 联系表单 ---- */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  border-color: var(--primary) !important;
  outline: none;
}

/* ---- 面包屑 (补充) ---- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* ---- 搜索提示框 ---- */
.search-toast,
.share-toast {
  animation: fadeInUp 0.3s ease;
}

/* ---- 视频模态框 ---- */
.video-modal {
  animation: fadeIn 0.2s ease;
}

/* ---- 分页补充 ---- */
.page-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 40px;
  height: 40px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

.page-btn:hover,
.page-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ---- 移动端搜索 ---- */
.mobile-search {
  padding: 16px 20px;
  display: flex;
  gap: 8px;
  border-top: 1px solid var(--border);
}

.mobile-search input {
  flex: 1;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 10px 16px;
  color: #fff;
  font-size: 14px;
}

.mobile-search button {
  background: var(--gradient-primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
}

/* ---- 响应式补充 ---- */
@media (max-width: 768px) {
  .contact-form {
    padding: 20px;
  }
  
  .contact-form > div:first-child {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 600px) {
  .community-grid {
    grid-template-columns: 1fr 1fr;
  }
}


/* ---- 底部修复补充样式 ---- */
.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-col {
  display: flex;
  flex-direction: column;
}

/* ---- 搜索框（首页搜索区域） ---- */
.search-box {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 10px 20px;
  gap: 10px;
  flex: 1;
}

.search-box input {
  background: transparent;
  border: none;
  color: var(--text-white);
  font-size: 14px;
  width: 100%;
  outline: none;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.search-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ---- 热门标签 ---- */
.hot-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
}

.hot-tags a {
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 12px;
  color: var(--text-muted);
  transition: var(--transition);
}

.hot-tags a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ---- 视频模态框 ---- */
.video-modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.85);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.video-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.video-modal {
  background: #16213e;
  border-radius: 16px;
  border: 1px solid #2a2a4a;
  width: 90%;
  max-width: 800px;
  padding: 24px;
  position: relative;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.video-modal-overlay.active .video-modal {
  transform: scale(1);
}

.video-modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 24px;
  color: var(--text-muted);
  cursor: pointer;
  background: none;
  border: none;
  line-height: 1;
  transition: var(--transition);
}

.video-modal-close:hover {
  color: var(--primary);
}

.video-modal-player {
  background: #000;
  border-radius: 10px;
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  cursor: pointer;
  overflow: hidden;
  position: relative;
}

.video-modal-player img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}

.video-modal-play-icon {
  position: absolute;
  font-size: 64px;
  color: #fff;
  text-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.video-modal-info {
  margin-top: 16px;
}

.video-modal-title {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.video-modal-meta {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  gap: 16px;
}

/* ---- 专家卡片（关于我们页面） ---- */
.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: var(--transition);
}

.expert-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(227,24,55,0.15);
}

.expert-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--primary);
  margin: 0 auto 12px;
  display: block;
}

.expert-name {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.expert-title {
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 10px;
}

.expert-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---- 联系表单 ---- */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.contact-form label {
  display: block;
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 8px;
  font-weight: 500;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-white);
  font-size: 14px;
  margin-bottom: 20px;
  transition: var(--transition);
  box-sizing: border-box;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(227,24,55,0.05);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  transition: var(--transition);
}

.contact-info-item:hover {
  border-color: var(--primary);
}

.contact-info-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.contact-info-text h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.contact-info-text p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---- 工具卡片 ---- */
.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.tool-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(227,24,55,0.15);
}

.tool-icon {
  font-size: 40px;
  margin-bottom: 16px;
  display: block;
}

.tool-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.tool-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.tool-badge {
  display: inline-block;
  background: rgba(227,24,55,0.15);
  color: var(--primary);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
}

/* ---- 社区卡片 ---- */
.community-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}

.community-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(227,24,55,0.15);
}

.community-card-icon {
  font-size: 36px;
  margin-bottom: 14px;
  display: block;
}

.community-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.community-card-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---- 步骤列表 ---- */
.steps-list {
  counter-reset: step-counter;
  list-style: none;
  padding: 0;
}

.steps-list li {
  counter-increment: step-counter;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  transition: var(--transition);
}

.steps-list li:hover {
  border-color: var(--primary);
}

.steps-list li::before {
  content: counter(step-counter);
  background: var(--primary);
  color: #fff;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

/* ---- 用户评价卡片 ---- */
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}

.review-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}

.review-stars {
  color: #ffd700;
  font-size: 16px;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.review-name {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
}

.review-role {
  font-size: 12px;
  color: var(--text-muted);
}

/* ---- FAQ 样式 ---- */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--primary);
}

.faq-question {
  padding: 18px 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  user-select: none;
}

.faq-question::after {
  content: '+';
  font-size: 20px;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

/* ---- 响应式补充 ---- */
@media (max-width: 768px) {
  .video-modal {
    width: 95%;
    padding: 16px;
  }
  .contact-form {
    padding: 20px;
  }
  .footer-qrcodes {
    gap: 12px;
  }
}