/* =============================================
   糖心vlog - 主样式文件
   cxya7p.cn | © 2025 糖心vlog
   原创设计，禁止抄袭
   ============================================= */

/* ---- CSS变量 ---- */
:root {
  --primary: #7c3aed;
  --primary-dark: #5b21b6;
  --primary-light: #a78bfa;
  --secondary: #ec4899;
  --accent: #f59e0b;
  --success: #10b981;
  --dark-bg: #0a0a0f;
  --dark-surface: #111118;
  --dark-card: #16161f;
  --dark-border: rgba(255,255,255,0.08);
  --text-primary: #f1f0ff;
  --text-secondary: #c4c0e0;
  --text-muted: #7c7a9a;
  --gradient-main: linear-gradient(135deg, #7c3aed 0%, #ec4899 50%, #f59e0b 100%);
  --gradient-card: linear-gradient(135deg, rgba(124,58,237,0.15) 0%, rgba(236,72,153,0.08) 100%);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-hover: 0 8px 40px rgba(124,58,237,0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  background: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--secondary); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ---- 顶部公告栏 ---- */
.top-bar {
  background: var(--gradient-main);
  color: #fff;
  text-align: center;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.3px;
  position: relative;
  z-index: 100;
}
.top-bar a { color: #fff; font-weight: 700; text-decoration: underline; margin-left: 4px; }

/* ---- 导航栏 ---- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(10,10,15,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--dark-border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.navbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  height: 64px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}
.site-icon {
  border-radius: 8px;
  object-fit: contain;
  flex-shrink: 0;
}
.brand-logo {
  object-fit: contain;
  flex-shrink: 0;
}
.navbar-search {
  flex: 1;
  max-width: 380px;
  position: relative;
}
.navbar-search input {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--dark-border);
  border-radius: 24px;
  padding: 8px 44px 8px 16px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}
.navbar-search input:focus {
  border-color: var(--primary);
  background: rgba(124,58,237,0.08);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.15);
}
.navbar-search input::placeholder { color: var(--text-muted); }
.search-btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  padding: 4px;
  transition: var(--transition);
}
.search-btn:hover { color: var(--primary-light); }
.search-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  display: none;
  z-index: 200;
  overflow: hidden;
}
.search-dropdown.show { display: block; }
.search-dropdown-item {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}
.search-dropdown-item:hover { background: rgba(124,58,237,0.1); color: var(--text-primary); }

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.navbar-menu a {
  display: block;
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}
.navbar-menu a:hover,
.navbar-menu a.active {
  color: var(--text-primary);
  background: rgba(124,58,237,0.15);
}
.navbar-menu a.active { color: var(--primary-light); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- 容器 ---- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Hero区域 ---- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 50%, rgba(124,58,237,0.25) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 30%, rgba(236,72,153,0.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 50% 80%, rgba(245,158,11,0.12) 0%, transparent 60%),
    url('/images/banner-bg.jpg') center/cover no-repeat;
  background-blend-mode: normal, normal, normal, multiply;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(10,10,15,0.85) 0%, rgba(10,10,15,0.5) 60%, rgba(10,10,15,0.2) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 24px;
  max-width: 680px;
  padding-left: 80px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: 24px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--primary-light);
  margin-bottom: 24px;
  font-weight: 500;
}
.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  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: clamp(36px, 5vw, 64px);
  font-weight: 900;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero h1 .highlight {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 520px;
}
.hero-stats {
  display: flex;
  gap: 28px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.hero-stat .num {
  font-size: 24px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.hero-stat .label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
}
.btn-primary {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 4px 20px rgba(124,58,237,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(124,58,237,0.5);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--dark-border);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  background: rgba(124,58,237,0.08);
}
.btn-sm {
  padding: 7px 16px;
  font-size: 13px;
  border-radius: 20px;
}

/* ---- 统计栏 ---- */
.stats-bar {
  background: var(--dark-surface);
  border-top: 1px solid var(--dark-border);
  border-bottom: 1px solid var(--dark-border);
  padding: 28px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item .num {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.stat-item .label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ---- 通用Section ---- */
.section { padding: 72px 0; }
.section-sm { padding: 32px 0; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-label {
  display: inline-block;
  background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-light);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 14px;
}
.section-title span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ---- 功能卡片网格 ---- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-main);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  border-color: rgba(124,58,237,0.3);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  font-size: 36px;
  margin-bottom: 14px;
  line-height: 1;
}
.feature-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.feature-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ---- 视频卡片网格 ---- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}
.video-card:hover {
  border-color: rgba(124,58,237,0.3);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #1a1a2e;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s 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(0,0,0,0.3);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(124,58,237,0.5);
  transform: scale(0.8);
  transition: var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon svg {
  width: 22px;
  height: 22px;
  fill: #fff;
  margin-left: 3px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.8);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--gradient-main);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 12px;
}
.video-info { padding: 14px 16px 16px; }
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.video-author {
  display: flex;
  align-items: center;
  gap: 8px;
}
.video-author-avatar {
  width: 28px;
  height: 28px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.video-author span { font-size: 13px; color: var(--text-muted); }
.video-stats {
  display: flex;
  gap: 10px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ---- 专家卡片 ---- */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  text-align: center;
  transition: var(--transition);
}
.expert-card:hover {
  border-color: rgba(124,58,237,0.3);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px;
  border: 3px solid transparent;
  background: var(--gradient-main) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
}
.expert-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.expert-role {
  font-size: 13px;
  color: var(--primary-light);
  margin-bottom: 10px;
  font-weight: 500;
}
.expert-bio {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
}
.expert-tags {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.expert-tag {
  background: rgba(124,58,237,0.12);
  border: 1px solid rgba(124,58,237,0.25);
  color: var(--primary-light);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 12px;
  font-weight: 500;
}
.expert-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
}

/* ---- 合作伙伴 ---- */
.partner-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.partner-item {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
  cursor: default;
}
.partner-item:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  background: rgba(124,58,237,0.08);
}

/* ---- 评价卡片 ---- */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}
.review-card:hover {
  border-color: rgba(124,58,237,0.3);
  transform: translateY(-3px);
}
.review-stars { color: #f59e0b; font-size: 16px; margin-bottom: 12px; letter-spacing: 2px; }
.review-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}
.review-author { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 38px;
  height: 38px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.review-date { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ---- FAQ ---- */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: rgba(124,58,237,0.3); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition);
  gap: 12px;
}
.faq-question:hover { color: var(--primary-light); }
.faq-icon {
  font-size: 20px;
  color: var(--primary-light);
  flex-shrink: 0;
  transition: var(--transition);
  font-weight: 300;
}
.faq-item.open .faq-icon { 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;
}

/* ---- 联系卡片 ---- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.contact-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}
.contact-card:hover {
  border-color: rgba(124,58,237,0.3);
  transform: translateY(-3px);
}
.contact-icon { font-size: 32px; margin-bottom: 12px; }
.contact-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.contact-info { font-size: 14px; color: var(--text-muted); line-height: 1.8; }

/* ---- 二维码 ---- */
.qr-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.qr-wrap img { border-radius: 8px; border: 1px solid var(--dark-border); }
.qr-label { font-size: 12px; color: var(--text-muted); }

/* ---- 分享栏 ---- */
.share-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.share-label { font-size: 13px; color: var(--text-muted); }
.share-btn {
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--dark-border);
  color: var(--text-secondary);
}
.share-btn:hover { transform: translateY(-2px); }
.share-btn.wechat:hover { background: #07c160; color: #fff; border-color: #07c160; }
.share-btn.weibo:hover { background: #e6162d; color: #fff; border-color: #e6162d; }
.share-btn.douyin:hover { background: #000; color: #fff; border-color: #000; }
.share-btn.bilibili:hover { background: #00a1d6; color: #fff; border-color: #00a1d6; }

/* ---- 页脚 ---- */
.footer {
  background: var(--dark-surface);
  border-top: 1px solid var(--dark-border);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--dark-border);
}
.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-top: 14px;
  margin-bottom: 16px;
}
.footer-social {
  display: flex;
  gap: 8px;
}
.footer-social a {
  width: 34px;
  height: 34px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--dark-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-social a:hover {
  background: rgba(124,58,237,0.15);
  border-color: var(--primary);
  color: var(--primary-light);
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.footer-col li a {
  font-size: 13px;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-col li a:hover { color: var(--primary-light); }
.footer-qr-row { display: flex; gap: 16px; }
.footer-qr-item { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.footer-qr-item img { border-radius: 8px; border: 1px solid var(--dark-border); }
.footer-qr-item span { font-size: 11px; color: var(--text-muted); }
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 13px; color: var(--text-muted); }
.footer-bottom .links { display: flex; gap: 16px; }
.footer-bottom .links a { font-size: 12px; color: var(--text-muted); }
.footer-bottom .links a:hover { color: var(--primary-light); }

/* ---- 视频模态框 ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.modal-overlay.show {
  opacity: 1;
  pointer-events: all;
}
.modal-box {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 720px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  position: relative;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}
.modal-overlay.show .modal-box { transform: scale(1); }
.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 10;
  width: 32px;
  height: 32px;
  background: rgba(0,0,0,0.5);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #fff;
  cursor: pointer;
  transition: var(--transition);
}
.modal-close:hover { background: var(--primary); }
.modal-video {
  background: #0a0a0f;
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-info { padding: 20px 24px; }
.modal-title { font-size: 16px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.modal-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ---- 面包屑 ---- */
.breadcrumb {
  background: var(--dark-surface);
  border-bottom: 1px solid var(--dark-border);
  padding: 10px 0;
}
.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.breadcrumb-inner a { color: var(--text-muted); }
.breadcrumb-inner a:hover { color: var(--primary-light); }
.breadcrumb-inner .sep { color: var(--text-muted); }
.breadcrumb-inner .current { color: var(--text-secondary); }

/* ---- 页面Hero（内页） ---- */
.page-hero {
  padding: 60px 24px;
  text-align: center;
  background: linear-gradient(135deg, rgba(124,58,237,0.15) 0%, rgba(236,72,153,0.08) 100%);
  border-bottom: 1px solid var(--dark-border);
}
.page-hero h1 {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.page-hero p {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---- 内容布局（主内容+侧边栏） ---- */
.content-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  align-items: start;
}
.sidebar-widget {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}
.sidebar-widget h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--dark-border);
}

/* ---- 标签 ---- */
.tag {
  display: inline-block;
  background: rgba(124,58,237,0.1);
  border: 1px solid rgba(124,58,237,0.2);
  color: var(--primary-light);
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 12px;
  font-weight: 500;
}
.tag-green {
  background: rgba(16,185,129,0.1);
  border-color: rgba(16,185,129,0.2);
  color: #34d399;
}
.tag-orange {
  background: rgba(245,158,11,0.1);
  border-color: rgba(245,158,11,0.2);
  color: #fbbf24;
}

/* ---- 分页 ---- */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}
.page-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}
.page-btn:hover, .page-btn.active {
  background: var(--gradient-main);
  border-color: transparent;
  color: #fff;
}

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .content-layout { grid-template-columns: 1fr; }
  .hero-content { padding-left: 24px; }
}

@media (max-width: 768px) {
  .navbar-search { display: none; }
  .navbar-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10,10,15,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--dark-border);
    display: none;
    z-index: 998;
  }
  .navbar-menu.open { display: flex; }
  .navbar-menu a { padding: 10px 16px; font-size: 15px; }
  .hamburger { display: flex; }
  .hero { min-height: 70vh; }
  .hero-content { padding: 60px 20px; }
  .hero-stats { gap: 16px; }
  .hero-stat .num { font-size: 20px; }
  .section { padding: 48px 0; }
  .feature-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section-title { font-size: 24px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-hero { padding: 40px 20px; }
  .partner-wall { gap: 8px; }
  .partner-item { padding: 10px 16px; font-size: 13px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 28px; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); display: grid; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-qr-row { flex-direction: column; }
  .modal-box { margin: 10px; }
}

/* ---- 滚动条 ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--dark-bg); }
::-webkit-scrollbar-thumb { background: rgba(124,58,237,0.4); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(124,58,237,0.7); }

/* ---- 选中文字 ---- */
::selection { background: rgba(124,58,237,0.3); color: var(--text-primary); }

/* ---- 动画 ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp 0.6s ease forwards; }