/* ===== 同人动漫视频社区 - 全站样式 ===== */
/* 域名：pymqvqo.cn */

:root {
  --primary: #e8001a;
  --primary-dark: #b5001a;
  --secondary: #1a1a2e;
  --accent: #f5a623;
  --bg-dark: #0d0d1a;
  --bg-card: #16213e;
  --bg-card2: #1a1a2e;
  --text-light: #f0f0f0;
  --text-muted: #a0a0b0;
  --border: #2a2a4a;
  --gradient-hero: linear-gradient(135deg, #0d0d1a 0%, #1a1a2e 50%, #16213e 100%);
  --gradient-red: linear-gradient(135deg, #e8001a, #b5001a);
  --gradient-gold: linear-gradient(135deg, #f5a623, #e8901a);
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-card: 0 4px 20px rgba(0,0,0,0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
}

*, *::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: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(13,13,26,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.header-inner {
  display: flex; align-items: center;
  justify-content: space-between;
  height: 68px; gap: 20px;
}
.site-logo {
  display: flex; align-items: center;
  gap: 10px; flex-shrink: 0;
}
/* Logo图片 */
.logo-img {
  width: 44px; height: 44px;
  border-radius: 10px;
  object-fit: contain;
  box-shadow: 0 0 16px rgba(232,0,26,0.5);
}
.logo-text { display: flex; flex-direction: column; }
.logo-name { font-size: 18px; font-weight: 800; color: #fff; line-height: 1.1; }
.logo-sub { font-size: 10px; color: var(--text-muted); letter-spacing: 1px; }

.site-nav { display: flex; align-items: center; gap: 2px; }
.site-nav a {
  color: var(--text-light); font-size: 13px; font-weight: 500;
  padding: 7px 12px; border-radius: var(--radius-sm);
  transition: var(--transition); white-space: nowrap;
}
.site-nav a:hover, .site-nav a.active {
  color: var(--primary); background: rgba(232,0,26,0.1);
}
.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.btn-join {
  background: var(--gradient-red); color: #fff !important;
  padding: 8px 18px !important; border-radius: 20px !important;
  font-weight: 600 !important; font-size: 13px !important;
  box-shadow: 0 4px 14px rgba(232,0,26,0.4);
}
.btn-join:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(232,0,26,0.5); color: #fff !important; }
.menu-toggle {
  display: none; background: none; border: none;
  cursor: pointer; padding: 6px;
  flex-direction: column; gap: 5px;
}
.menu-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text-light); border-radius: 2px;
  transition: var(--transition);
}

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: var(--bg-card2);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.search-bar {
  display: flex; align-items: center;
  max-width: 680px; margin: 0 auto;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 24px; overflow: hidden;
  transition: var(--transition);
}
.search-bar:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232,0,26,0.15);
}
.search-bar input {
  flex: 1; background: none; border: none;
  outline: none; padding: 10px 20px;
  color: var(--text-light); font-size: 14px;
}
.search-bar input::placeholder { color: var(--text-muted); }
.search-bar button {
  background: var(--gradient-red); border: none;
  color: #fff; padding: 10px 22px;
  cursor: pointer; font-size: 14px; font-weight: 600;
  transition: var(--transition);
}
.search-bar button:hover { background: var(--primary-dark); }

/* ===== Hero Banner ===== */
.hero-banner {
  position: relative; min-height: 600px;
  display: flex; align-items: center; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-image: url('../images/banner.jpg');
  background-size: cover; background-position: center;
  filter: brightness(0.45);
  transform: scale(1.03); transition: transform 8s ease;
}
.hero-banner:hover .hero-bg { transform: scale(1.0); }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(13,13,26,0.88) 0%, rgba(13,13,26,0.45) 60%, transparent 100%);
}
.hero-content {
  position: relative; z-index: 1;
  max-width: 680px; padding: 60px 0;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(232,0,26,0.15);
  border: 1px solid rgba(232,0,26,0.3);
  color: #f5a623; font-size: 13px; font-weight: 600;
  padding: 6px 16px; border-radius: 20px; margin-bottom: 20px;
}
.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900; line-height: 1.15;
  color: #fff; margin-bottom: 20px;
}
.hero-content h1 em {
  font-style: normal; color: var(--primary);
  text-shadow: 0 0 30px rgba(232,0,26,0.6);
}
.hero-desc {
  font-size: 15px; color: var(--text-muted);
  line-height: 1.8; margin-bottom: 20px;
}
/* 视频标签（SEO强化）*/
.hero-video-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 24px;
}
.v-tag {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text-muted); font-size: 12px;
  padding: 4px 12px; border-radius: 12px;
  transition: var(--transition);
}
.v-tag:hover {
  background: rgba(232,0,26,0.15);
  border-color: rgba(232,0,26,0.3);
  color: #fff;
}
.hero-stats {
  display: flex; gap: 28px;
  flex-wrap: wrap; margin-bottom: 28px;
}
.hero-stat .num {
  font-size: 1.6rem; font-weight: 900;
  color: var(--primary); line-height: 1;
}
.hero-stat .label {
  font-size: 12px; color: var(--text-muted);
  margin-top: 4px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== 通用按钮 ===== */
.btn-primary {
  display: inline-block;
  background: var(--gradient-red); color: #fff;
  padding: 12px 28px; border-radius: 24px;
  font-weight: 700; font-size: 14px;
  box-shadow: 0 6px 20px rgba(232,0,26,0.4);
  transition: var(--transition);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(232,0,26,0.5);
  color: #fff;
}
.btn-outline {
  display: inline-block;
  background: transparent; color: #fff;
  padding: 12px 28px; border-radius: 24px;
  font-weight: 600; font-size: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  transition: var(--transition);
}
.btn-outline:hover {
  border-color: var(--primary); color: var(--primary);
  background: rgba(232,0,26,0.08);
}
.btn-sm {
  display: inline-block; padding: 7px 16px;
  border-radius: 16px; font-size: 12px;
  font-weight: 600; transition: var(--transition);
  cursor: pointer;
}
.btn-sm-primary { background: var(--gradient-red); color: #fff; }
.btn-sm-primary:hover { opacity: 0.9; color: #fff; transform: translateY(-1px); }
.btn-sm-outline {
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-sm-outline:hover { border-color: var(--primary); color: var(--primary); }

/* ===== 数据统计条 ===== */
.stats-bar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.stats-grid {
  display: flex; justify-content: space-around;
  flex-wrap: wrap; gap: 16px;
}
.stat-item { text-align: center; }
.stat-item .num {
  font-size: 1.6rem; font-weight: 900;
  color: var(--primary); line-height: 1;
}
.stat-item .label {
  font-size: 12px; color: var(--text-muted);
  margin-top: 4px;
}

/* ===== 通用Section ===== */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-card2); }
.section-header { text-align: center; margin-bottom: 40px; }
.section-tag {
  display: inline-block;
  font-size: 11px; font-weight: 700;
  color: var(--primary); letter-spacing: 3px;
  margin-bottom: 10px;
}
.section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 900; color: #fff; margin-bottom: 12px;
}
.section-header h2 span, .section-header h2 strong { color: var(--primary); }
.section-header p { font-size: 14px; color: var(--text-muted); }

/* ===== 视频筛选栏 ===== */
.video-filter-bar {
  display: flex; flex-wrap: wrap; gap: 8px;
  justify-content: center; margin-bottom: 28px;
}
.filter-btn {
  background: var(--bg-card); color: var(--text-muted);
  border: 1px solid var(--border); border-radius: 20px;
  padding: 7px 18px; font-size: 13px; font-weight: 500;
  cursor: pointer; transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary); color: #fff;
  border-color: var(--primary);
}

/* ===== 视频网格 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 12px 32px rgba(232,0,26,0.2);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #0d0d1a;
}
.video-thumb img {
  width: 100%; height: 100%;
  object-fit: cover; transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
/* 播放按钮（鼠标移动显示）*/
.video-play-btn {
  position: absolute; inset: 0;
  display: flex; align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: background 0.3s ease;
}
.video-card:hover .video-play-btn {
  background: rgba(0,0,0,0.45);
}
.play-icon {
  width: 52px; height: 52px;
  background: rgba(232,0,26,0.9);
  border-radius: 50%;
  display: flex; align-items: center;
  justify-content: center;
  opacity: 0; transform: scale(0.8);
  transition: all 0.3s ease;
}
.play-icon::after {
  content: '';
  width: 0; height: 0;
  border-style: solid;
  border-width: 9px 0 9px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 3px;
}
.video-card:hover .play-icon {
  opacity: 1; transform: scale(1);
}
.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 8px; border-radius: 4px;
}
.video-tag {
  position: absolute; top: 8px; left: 8px;
  background: var(--primary); color: #fff;
  font-size: 10px; font-weight: 700;
  padding: 3px 10px; border-radius: 6px;
}
.video-info { padding: 14px 16px; }
.video-info h3 {
  font-size: 14px; font-weight: 700;
  color: var(--text-light); line-height: 1.5;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-desc-text {
  font-size: 12px; color: var(--text-muted);
  line-height: 1.5; margin: 4px 0 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex; gap: 12px;
  font-size: 12px; color: #666;
}

/* ===== 特色卡片网格 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
}
.feature-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}
.feature-icon {
  font-size: 2.2rem; margin-bottom: 14px;
}
.feature-card h3 {
  font-size: 16px; font-weight: 800;
  color: #fff; margin-bottom: 10px;
}
.feature-card p {
  font-size: 13px; color: var(--text-muted);
  line-height: 1.7;
}
.card-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 14px;
}
.card-tags span {
  background: rgba(232,0,26,0.1);
  color: var(--primary); font-size: 11px;
  padding: 3px 10px; border-radius: 8px;
  border: 1px solid rgba(232,0,26,0.2);
}

/* ===== AI区块 ===== */
.ai-section { background: var(--bg-dark); }
.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
}
.ai-content h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 900; color: #fff;
  margin: 16px 0 16px;
}
.ai-content h2 span { color: var(--primary); }
.ai-content > p {
  font-size: 14px; color: var(--text-muted);
  line-height: 1.8; margin-bottom: 24px;
}
.ai-features { display: flex; flex-direction: column; gap: 20px; }
.ai-feature-item {
  display: flex; gap: 16px; align-items: flex-start;
}
.ai-feature-item .icon {
  width: 44px; height: 44px;
  background: rgba(232,0,26,0.12);
  border-radius: 12px;
  display: flex; align-items: center;
  justify-content: center; font-size: 20px;
  flex-shrink: 0;
}
.ai-feature-item h4 {
  font-size: 14px; font-weight: 700;
  color: #fff; margin-bottom: 6px;
}
.ai-feature-item p {
  font-size: 13px; color: var(--text-muted);
  line-height: 1.6;
}
.ai-visual {
  position: relative; border-radius: var(--radius);
  overflow: hidden;
}
.ai-visual img {
  width: 100%; border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.ai-badge {
  position: absolute; bottom: 20px; left: 20px;
  background: rgba(13,13,26,0.9);
  border: 1px solid rgba(232,0,26,0.3);
  border-radius: 10px; padding: 12px 16px;
  text-align: center;
}
.ai-badge .title { font-size: 11px; color: var(--text-muted); }
.ai-badge .value {
  font-size: 1.8rem; font-weight: 900;
  color: var(--primary); line-height: 1.2;
}

/* ===== 专家团队 ===== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex; flex-direction: column;
}
.team-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(232,0,26,0.15);
}
.team-avatar {
  position: relative;
  aspect-ratio: 4/3; overflow: hidden;
}
.team-avatar img {
  width: 100%; height: 100%; object-fit: cover;
  object-position: center top;
}
/* EEAT专家资质徽章 */
.expert-cert-badge {
  position: absolute; bottom: 10px; left: 10px;
  background: rgba(232,0,26,0.9); color: #fff;
  font-size: 10px; font-weight: 700;
  padding: 3px 10px; border-radius: 8px;
  max-width: calc(100% - 20px);
}
.team-info { padding: 20px; flex: 1; }
.team-info h3 {
  font-size: 18px; font-weight: 800;
  color: #fff; margin-bottom: 4px;
}
.team-role {
  font-size: 13px; color: var(--primary);
  font-weight: 600; margin-bottom: 10px;
}
.team-desc {
  font-size: 13px; color: var(--text-muted);
  line-height: 1.7; margin-bottom: 12px;
}
.team-awards {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 12px;
}
.award-tag {
  background: rgba(245,166,35,0.1);
  color: var(--accent); font-size: 11px;
  padding: 3px 10px; border-radius: 8px;
  border: 1px solid rgba(245,166,35,0.2);
}
.team-btns { display: flex; gap: 8px; }

/* ===== 合作品牌 ===== */
.partners-grid {
  display: flex; flex-wrap: wrap;
  gap: 12px; justify-content: center;
}
.partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 24px;
  font-size: 13px; font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
}
.partner-item:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ===== FAQ ===== */
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.3s;
}
.faq-item.open { border-color: var(--primary); }
.faq-q {
  display: flex; align-items: center;
  justify-content: space-between;
  padding: 16px 20px; cursor: pointer;
  font-size: 14px; font-weight: 600;
  color: var(--text-light);
  transition: var(--transition);
  gap: 12px;
}
.faq-q:hover { color: var(--primary); }
.faq-arrow {
  color: var(--primary); font-size: 12px;
  flex-shrink: 0; transition: transform 0.3s;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  display: none; padding: 0 20px 16px;
  font-size: 13px; color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-a { display: block; }

/* ===== 用户评价 ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.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: rgba(245,166,35,0.4);
  transform: translateY(-2px);
}
.review-stars { color: var(--accent); font-size: 16px; margin-bottom: 12px; }
.review-text {
  font-size: 13px; color: var(--text-muted);
  line-height: 1.8; margin-bottom: 16px;
}
.review-user { display: flex; align-items: center; gap: 12px; }
.review-avatar {
  width: 40px; height: 40px;
  background: var(--gradient-red);
  border-radius: 50%;
  display: flex; align-items: center;
  justify-content: center;
  font-size: 16px; font-weight: 800;
  color: #fff; flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 700; color: #fff; }
.review-label { font-size: 12px; color: #666; }

/* ===== 联系区 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.contact-card h3 {
  font-size: 16px; font-weight: 800;
  color: #fff; margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.contact-item {
  display: flex; gap: 12px;
  align-items: flex-start;
  margin-bottom: 14px;
}
.contact-icon {
  width: 32px; height: 32px;
  background: rgba(232,0,26,0.1);
  border-radius: 8px;
  display: flex; align-items: center;
  justify-content: center; font-size: 14px;
  flex-shrink: 0;
}
.contact-item .label {
  font-size: 11px; color: #666; margin-bottom: 2px;
}
.contact-item .value {
  font-size: 13px; color: var(--text-muted); font-weight: 500;
}

/* ===== 二维码 ===== */
.qr-grid {
  display: flex; gap: 16px; flex-wrap: wrap;
}
.qr-item { text-align: center; }
.qr-code {
  width: 100px; height: 100px;
  background: #fff; border-radius: 8px;
  overflow: hidden; margin-bottom: 6px;
}
.qr-label { font-size: 11px; color: #666; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-card2);
  border-top: 1px solid var(--border);
  padding: 48px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px; margin-bottom: 32px;
}
.footer-brand p {
  font-size: 13px; color: var(--text-muted);
  line-height: 1.7; margin-bottom: 6px;
}
.footer-col h4 {
  font-size: 14px; font-weight: 700;
  color: #fff; margin-bottom: 16px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  font-size: 13px; color: #666;
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex; flex-direction: column;
  align-items: center; gap: 10px;
  text-align: center;
}
.footer-bottom p {
  font-size: 12px; color: #555;
}
.footer-bottom a { color: #666; }
.footer-bottom a:hover { color: var(--primary); }
.footer-links {
  display: flex; gap: 16px; flex-wrap: wrap;
  justify-content: center;
}
.footer-links a { font-size: 12px; color: #555; }
.footer-links a:hover { color: var(--primary); }
.update-time {
  font-size: 12px; color: #444;
  font-style: italic;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  background: var(--bg-card2);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.breadcrumb-list {
  list-style: none; display: flex;
  align-items: center; gap: 8px;
  font-size: 13px; color: #666;
}
.breadcrumb-list li::after { content: ' ›'; color: #444; }
.breadcrumb-list li:last-child::after { content: ''; }
.breadcrumb-list a { color: #666; }
.breadcrumb-list a:hover { color: var(--primary); }
.breadcrumb-list .active { color: var(--text-muted); }

/* ===== 内页Hero ===== */
.page-hero {
  background: var(--gradient-hero);
  padding: 60px 0; text-align: center;
}
.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900; color: #fff; margin-bottom: 12px;
}
.page-hero p {
  font-size: 14px; color: var(--text-muted);
}

/* ===== 分页 ===== */
.pagination {
  display: flex; justify-content: center;
  gap: 8px; margin-top: 32px;
}
.page-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px;
  color: var(--text-muted); cursor: pointer;
  transition: var(--transition);
}
.page-btn:hover, .page-btn.active {
  background: var(--primary); color: #fff;
  border-color: var(--primary);
}

/* ===== 分享栏 ===== */
.share-bar {
  display: flex; align-items: center;
  gap: 12px; flex-wrap: wrap;
  justify-content: center;
}
.share-label { font-size: 13px; color: #666; }
.share-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 16px; border-radius: 16px;
  font-size: 12px; font-weight: 600;
  cursor: pointer; transition: var(--transition);
}
.share-btn:hover { border-color: var(--primary); color: var(--primary); }

/* ===== 视频模态框 ===== */
.video-modal {
  display: none; position: fixed;
  inset: 0; z-index: 9999;
  background: rgba(0,0,0,0.9);
  align-items: center; justify-content: center;
}
.video-modal.open { display: flex; }
.modal-inner {
  position: relative; width: 90%; max-width: 800px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.modal-close {
  position: absolute; top: 12px; right: 12px;
  background: rgba(232,0,26,0.8); color: #fff;
  border: none; width: 32px; height: 32px;
  border-radius: 50%; cursor: pointer;
  font-size: 14px; font-weight: 700;
  z-index: 1; transition: var(--transition);
}
.modal-close:hover { background: var(--primary); transform: scale(1.1); }
.modal-video {
  aspect-ratio: 16/9;
  background: #000;
  display: flex; align-items: center;
  justify-content: center;
}
.modal-video video {
  width: 100%; height: 100%;
  object-fit: contain;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .ai-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .site-nav {
    display: none; position: fixed;
    top: 68px; left: 0; right: 0;
    background: rgba(13,13,26,0.98);
    flex-direction: column; padding: 20px;
    border-bottom: 1px solid var(--border);
    z-index: 999; gap: 4px;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 16px; font-size: 15px; }
  .menu-toggle { display: flex; }
  .hero-banner { min-height: 480px; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-stats { gap: 16px; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .team-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .section { padding: 40px 0; }
  .ai-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .hero-content { padding: 40px 0; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { text-align: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .video-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .hero-video-tags { gap: 6px; }
}