/* =============================================
   麻豆 - 动漫影视传媒社区
   原创配色：深夜紫 #0D0D1A + 星辰紫 #7B2FBE + 金辉 #D4A017
   ============================================= */

:root {
  --primary: #7B2FBE;
  --primary-dark: #5A1A9A;
  --primary-light: #9B59B6;
  --accent: #D4A017;
  --accent-light: #F0C040;
  --bg-dark: #0D0D1A;
  --bg-card: #161628;
  --bg-section: #111120;
  --text-main: #E8E8F0;
  --text-muted: #8888AA;
  --text-light: #BBBBCC;
  --border: rgba(123,47,190,0.25);
  --border-gold: rgba(212,160,23,0.3);
  --gradient-main: linear-gradient(135deg, #7B2FBE 0%, #5A1A9A 50%, #D4A017 100%);
  --gradient-card: linear-gradient(180deg, #161628 0%, #0D0D1A 100%);
  --shadow-purple: 0 8px 32px rgba(123,47,190,0.3);
  --shadow-gold: 0 4px 20px rgba(212,160,23,0.2);
  --radius: 14px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

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

body {
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }

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

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--gradient-main);
  padding: 8px 0;
  text-align: center;
  font-size: 13px;
  color: #fff;
  letter-spacing: 1px;
}
.top-bar a { color: var(--accent-light); font-weight: 600; }

/* ===== 导航栏 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,13,26,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.4);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.site-logo img { height: 44px; width: auto; }
.logo-text { font-size: 22px; font-weight: 900; background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-light);
  transition: all var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  background: rgba(123,47,190,0.2);
  color: var(--primary-light);
}

.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.btn-join {
  background: var(--gradient-main);
  color: #fff !important;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  transition: all var(--transition);
  box-shadow: var(--shadow-purple);
}
.btn-join:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(123,47,190,0.5); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}
.menu-toggle span { display: block; width: 24px; height: 2px; background: var(--text-main); border-radius: 2px; transition: all var(--transition); }

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: var(--bg-section);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-input-group {
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 640px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.search-input-group:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(123,47,190,0.15); }
.search-input-group input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  padding: 10px 18px;
  font-size: 14px;
  color: var(--text-main);
  font-family: inherit;
}
.search-input-group input::placeholder { color: var(--text-muted); }
.search-btn {
  background: var(--primary);
  border: none;
  padding: 10px 20px;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
  font-family: inherit;
}
.search-btn:hover { background: var(--primary-dark); }
.search-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-tag {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 12px;
  background: rgba(123,47,190,0.15);
  color: var(--primary-light);
  cursor: pointer;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.search-tag:hover { background: var(--primary); color: #fff; }
.search-tip { font-size: 12px; color: var(--text-muted); margin-top: 4px; padding: 0 18px; }

/* ===== Hero Banner ===== */
.hero-section {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/banner.jpg');
  background-size: cover;
  background-position: center top;
  filter: brightness(0.45);
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(13,13,26,0.9) 0%, rgba(13,13,26,0.5) 60%, transparent 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 24px;
  width: 100%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(123,47,190,0.3);
  border: 1px solid var(--primary);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 12px;
  color: var(--primary-light);
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.hero-badge::before { content: '▶'; font-size: 10px; }
.hero-title {
  font-size: clamp(32px, 5vw, 58px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #fff;
}
.hero-title .brand { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc {
  font-size: 16px;
  color: var(--text-light);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-main);
  color: #fff;
  padding: 14px 32px;
  border-radius: 28px;
  font-size: 15px;
  font-weight: 700;
  box-shadow: var(--shadow-purple);
  transition: all var(--transition);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(123,47,190,0.5); color: #fff; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-main);
  padding: 14px 32px;
  border-radius: 28px;
  font-size: 15px;
  font-weight: 600;
  border: 1.5px solid rgba(255,255,255,0.3);
  transition: all var(--transition);
}
.btn-outline:hover { border-color: var(--primary-light); color: var(--primary-light); background: rgba(123,47,190,0.1); }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.stat-item { text-align: left; }
.stat-num { font-size: 28px; font-weight: 900; color: var(--accent); }
.stat-label { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ===== 通用区块 ===== */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-section); }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
  display: inline-block;
  background: rgba(123,47,190,0.15);
  border: 1px solid var(--border);
  color: var(--primary-light);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 12px;
  letter-spacing: 2px;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 900;
  color: #fff;
  margin-bottom: 12px;
}
.section-title .highlight { color: var(--accent); }
.section-desc { font-size: 15px; color: var(--text-muted); max-width: 560px; margin: 0 auto; }

/* ===== 视频卡片网格 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow-purple);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #1a1a2e;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .play-overlay { opacity: 1; }
.play-btn-icon {
  width: 56px;
  height: 56px;
  background: rgba(123,47,190,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(123,47,190,0.6);
  transition: transform var(--transition);
}
.play-btn-icon::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}
.video-card:hover .play-btn-icon { transform: scale(1.1); }
.video-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
}
.video-info { padding: 16px; }
.video-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  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;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}
.video-stats { display: flex; gap: 12px; }
.video-stats span { display: flex; align-items: center; gap: 4px; }
.video-tags { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.video-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(123,47,190,0.15);
  color: var(--primary-light);
  border: 1px solid var(--border);
}

/* ===== 功能模块卡片 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-main);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.feature-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-purple); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 52px;
  height: 52px;
  background: rgba(123,47,190,0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
}
.feature-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.feature-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--transition);
}
.expert-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow-gold); }
.expert-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--primary);
  box-shadow: 0 0 0 4px rgba(123,47,190,0.15);
}
.expert-name { font-size: 18px; font-weight: 800; color: #fff; margin-bottom: 4px; }
.expert-role { font-size: 13px; color: var(--accent); font-weight: 600; margin-bottom: 12px; }
.expert-bio { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.expert-tags { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.expert-tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 10px;
  background: rgba(212,160,23,0.1);
  color: var(--accent);
  border: 1px solid var(--border-gold);
}
.expert-actions { display: flex; gap: 10px; justify-content: center; }
.btn-sm {
  font-size: 12px;
  padding: 7px 16px;
  border-radius: 16px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  font-family: inherit;
}
.btn-sm-primary { background: var(--primary); color: #fff; }
.btn-sm-primary:hover { background: var(--primary-dark); }
.btn-sm-outline { background: transparent; color: var(--text-light); border: 1px solid var(--border); }
.btn-sm-outline:hover { border-color: var(--primary-light); color: var(--primary-light); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: var(--primary); }
.faq-question {
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  user-select: none;
}
.faq-question::after {
  content: '+';
  font-size: 20px;
  color: var(--primary-light);
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 18px; }
.faq-answer p { font-size: 14px; color: var(--text-muted); line-height: 1.8; }

/* ===== 用户评论 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}
.review-card:hover { border-color: var(--primary); transform: translateY(-3px); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.review-user { flex: 1; }
.review-name { font-size: 14px; font-weight: 700; color: #fff; }
.review-date { font-size: 12px; color: var(--text-muted); }
.review-stars { color: var(--accent); font-size: 14px; letter-spacing: 2px; }
.review-text { font-size: 13px; color: var(--text-light); line-height: 1.7; }
.review-tag {
  display: inline-block;
  margin-top: 10px;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(123,47,190,0.15);
  color: var(--primary-light);
}

/* ===== 合作品牌 ===== */
.partner-row {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}
.partner-item {
  opacity: 0.7;
  transition: opacity var(--transition), transform var(--transition);
  filter: grayscale(30%);
}
.partner-item:hover { opacity: 1; transform: scale(1.05); filter: none; }
.partner-item img { height: 44px; width: auto; border-radius: var(--radius-sm); }

/* ===== 联系区块 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.contact-title { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 20px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--text-light);
}
.contact-icon {
  width: 36px;
  height: 36px;
  background: rgba(123,47,190,0.15);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  border: 1px solid var(--border);
}
.qr-row { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 20px; }
.qr-item { text-align: center; }
.qr-item img { width: 90px; height: 105px; border-radius: 8px; margin-bottom: 6px; }
.qr-label { font-size: 11px; color: var(--text-muted); }

/* ===== 分享区块 ===== */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.share-label { font-size: 14px; color: var(--text-muted); }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-light);
  transition: all var(--transition);
  font-family: inherit;
}
.share-btn:hover { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 14px 0;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb .sep { opacity: 0.4; }
.breadcrumb .current { color: var(--primary-light); }

/* ===== 页脚 ===== */
.site-footer {
  background: #080810;
  border-top: 1px solid var(--border);
  padding: 56px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand img { height: 40px; margin-bottom: 16px; }
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.8; max-width: 280px; }
.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: 10px; }
.footer-col ul li a { font-size: 13px; color: var(--text-muted); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.copyright { font-size: 13px; color: var(--text-muted); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 12px; color: var(--text-muted); }
.footer-links a:hover { color: var(--primary-light); }

/* ===== 内页通用 ===== */
.page-hero {
  background: var(--bg-section);
  border-bottom: 1px solid var(--border);
  padding: 48px 0;
  text-align: center;
}
.page-hero h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 900; color: #fff; margin-bottom: 12px; }
.page-hero p { font-size: 15px; color: var(--text-muted); max-width: 560px; margin: 0 auto; }

/* ===== 标签筛选 ===== */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.filter-btn {
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  transition: all var(--transition);
  font-family: inherit;
}
.filter-btn:hover, .filter-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ===== 工具卡片 ===== */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all var(--transition);
  cursor: pointer;
}
.tool-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-purple); }
.tool-icon { font-size: 36px; margin-bottom: 12px; }
.tool-name { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.tool-desc { font-size: 12px; color: var(--text-muted); line-height: 1.6; }
.tool-badge {
  display: inline-block;
  margin-top: 10px;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(212,160,23,0.15);
  color: var(--accent);
  border: 1px solid var(--border-gold);
}

/* ===== 社区话题 ===== */
.topic-list { display: flex; flex-direction: column; gap: 16px; }
.topic-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: all var(--transition);
  cursor: pointer;
}
.topic-item:hover { border-color: var(--primary); transform: translateX(4px); }
.topic-rank {
  font-size: 22px;
  font-weight: 900;
  color: var(--primary);
  min-width: 36px;
  text-align: center;
}
.topic-rank.gold { color: var(--accent); }
.topic-info { flex: 1; }
.topic-title { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.topic-meta { font-size: 12px; color: var(--text-muted); }
.topic-heat { font-size: 13px; color: var(--accent); font-weight: 700; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0; right: 0;
    background: rgba(13,13,26,0.98);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 4px;
    z-index: 999;
  }
  .menu-toggle { display: flex; }
  .hero-section { min-height: 420px; }
  .hero-stats { gap: 24px; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .search-tags { display: none; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .video-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
}

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

/* ===== 懒加载占位 ===== */
img[data-src] { background: var(--bg-card); min-height: 100px; }

/* ===== 弹幕样式 ===== */
.danmaku-bar {
  background: rgba(0,0,0,0.6);
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 13px;
  color: #fff;
  overflow: hidden;
  white-space: nowrap;
  position: relative;
}
.danmaku-text {
  display: inline-block;
  animation: scrollLeft 20s linear infinite;
}
@keyframes scrollLeft {
  from { transform: translateX(100%); }
  to { transform: translateX(-100%); }
}

/* ===== AI标签 ===== */
.ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: linear-gradient(90deg, #7B2FBE, #D4A017);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  letter-spacing: 1px;
}

/* ===== 直播标签 ===== */
.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #E74C3C;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
}
.live-dot {
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 50%;
  animation: blink 1s infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}