/* 糖心vlog - 主样式文件 | 4w98x2r.cn */
/* ===== CSS变量 ===== */
:root {
  --primary: #6B21A8;
  --primary-light: #9333EA;
  --primary-dark: #4C1D95;
  --accent: #F59E0B;
  --accent-light: #FCD34D;
  --bg-dark: #0F0A1E;
  --bg-card: #1A1030;
  --bg-section: #150D28;
  --text-primary: #F3F0FF;
  --text-secondary: #C4B5FD;
  --text-muted: #7C6FA0;
  --border: rgba(139,92,246,0.25);
  --gradient-hero: linear-gradient(135deg, #0F0A1E 0%, #1A0A3E 50%, #0D1B2A 100%);
  --gradient-card: linear-gradient(145deg, #1A1030, #0F0A1E);
  --gradient-accent: linear-gradient(90deg, #6B21A8, #9333EA, #F59E0B);
  --shadow: 0 4px 24px rgba(107,33,168,0.3);
  --radius: 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', 'Noto Sans SC', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
h1,h2,h3,h4,h5,h6 { font-weight: 700; line-height: 1.3; }

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

/* ===== 顶部公告条 ===== */
.top-bar {
  background: var(--gradient-accent);
  padding: 6px 0;
  text-align: center;
  font-size: 13px;
  color: #fff;
  font-weight: 500;
  letter-spacing: 0.5px;
}
.top-bar a { color: #fff; text-decoration: underline; }

/* ===== 导航栏 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,10,30,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
}
.navbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.navbar-brand img.site-logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
}
.navbar-brand .brand-name {
  font-size: 22px;
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  padding: 6px 14px;
  border-radius: 8px;
  font-weight: 500;
  white-space: nowrap;
  transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: #fff;
  background: rgba(139,92,246,0.2);
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-right .search-form {
  flex: none;
  max-width: 200px;
  padding: 5px 12px;
}
.btn-join {
  background: var(--gradient-accent);
  color: #fff;
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  transition: var(--transition);
  flex-shrink: 0;
}
.btn-join:hover { opacity: 0.85; color: #fff; transform: translateY(-1px); }
.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  width: 36px;
  height: 36px;
}
.nav-mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: rgba(26,16,48,0.9);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
}
.search-form {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 6px 16px;
  flex: 1;
  max-width: 600px;
  gap: 8px;
}
.search-form input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 14px;
  flex: 1;
  min-width: 0;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form button {
  background: none;
  border: none;
  color: var(--primary-light);
  cursor: pointer;
  font-size: 16px;
  padding: 2px 6px;
  transition: var(--transition);
}
.search-form button:hover { color: var(--accent); }
.search-hot-tags { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.search-hot-tags span { color: var(--text-muted); font-size: 12px; }
.search-hot-tags a {
  font-size: 12px;
  color: var(--text-secondary);
  background: rgba(139,92,246,0.12);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.search-hot-tags a:hover { background: rgba(139,92,246,0.3); color: #fff; }

/* ===== Hero Banner ===== */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--gradient-hero);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero_banner.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15,10,30,0.95) 40%, rgba(15,10,30,0.3) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 20px;
  width: 100%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.4);
  color: var(--accent-light);
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 18px;
  font-weight: 600;
  letter-spacing: 1px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
  max-width: 600px;
}
.hero h1 .highlight {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  font-size: 28px;
  font-weight: 900;
  color: var(--accent);
  display: block;
}
.hero-stat .label { font-size: 12px; color: var(--text-muted); }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(107,33,168,0.5);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(107,33,168,0.7); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--text-primary);
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline:hover { background: rgba(139,92,246,0.15); border-color: var(--primary-light); color: #fff; }

/* ===== 通用容器 ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.section { padding: 70px 0; }
.section-alt { background: var(--bg-section); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
  display: inline-block;
  background: rgba(107,33,168,0.2);
  border: 1px solid rgba(139,92,246,0.3);
  color: var(--primary-light);
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 900;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.section-title span {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-desc { color: var(--text-secondary); font-size: 15px; max-width: 600px; margin: 0 auto; line-height: 1.8; }

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--primary-light); }
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #0a0618;
}
.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); }
.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: var(--transition);
  opacity: 0;
}
.video-card:hover .play-btn { opacity: 1; background: rgba(0,0,0,0.45); }
.play-btn-icon {
  width: 56px;
  height: 56px;
  background: rgba(107,33,168,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: var(--transition);
  box-shadow: 0 0 30px rgba(107,33,168,0.8);
}
.video-card:hover .play-btn-icon { transform: scale(1); }
.play-btn-icon svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 600;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.video-info { padding: 14px 16px; }
.video-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  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-meta-left { display: flex; align-items: center; gap: 12px; }
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-author { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.video-author img { width: 24px; height: 24px; border-radius: 50%; object-fit: cover; }
.video-author span { font-size: 12px; color: var(--text-secondary); }

/* ===== 功能模块卡片 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--primary-light); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 52px;
  height: 52px;
  background: rgba(107,33,168,0.2);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  border: 1px solid rgba(139,92,246,0.2);
}
.feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
.feature-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  text-align: center;
}
.expert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.expert-img-wrap {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  max-height: 280px;
}
.expert-img-wrap img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.expert-body { padding: 20px 16px; }
.expert-name { font-size: 18px; font-weight: 800; margin-bottom: 4px; color: var(--text-primary); }
.expert-role {
  font-size: 12px;
  color: var(--primary-light);
  background: rgba(107,33,168,0.15);
  padding: 3px 10px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 10px;
  font-weight: 600;
}
.expert-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 14px; }
.expert-awards { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-bottom: 14px; }
.expert-awards span {
  font-size: 11px;
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.3);
  color: var(--accent-light);
  padding: 2px 8px;
  border-radius: 4px;
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 20px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: transparent;
}
.btn-sm:hover { background: rgba(139,92,246,0.2); color: #fff; border-color: var(--primary-light); }
.btn-sm.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-sm.primary:hover { background: var(--primary-light); }

/* ===== 用户评论 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.review-card:hover { border-color: var(--primary-light); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-user-info .name { font-size: 15px; font-weight: 700; color: var(--text-primary); }
.review-user-info .date { font-size: 12px; color: var(--text-muted); }
.review-stars { color: var(--accent); font-size: 14px; margin-bottom: 10px; }
.review-text { font-size: 14px; color: var(--text-secondary); line-height: 1.8; }
.review-tags { display: flex; gap: 6px; margin-top: 12px; flex-wrap: wrap; }
.review-tags span {
  font-size: 11px;
  background: rgba(107,33,168,0.15);
  color: var(--primary-light);
  padding: 2px 8px;
  border-radius: 4px;
}

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-question {
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: var(--transition);
}
.faq-question:hover { color: var(--primary-light); }
.faq-icon {
  width: 24px;
  height: 24px;
  background: rgba(107,33,168,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: var(--transition);
  color: var(--primary-light);
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 20px 18px; }

/* ===== 合作品牌 ===== */
.partner-grid {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}
.partner-logo {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 28px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  transition: var(--transition);
  text-align: center;
  min-width: 120px;
}
.partner-logo:hover { border-color: var(--primary-light); color: var(--primary-light); transform: translateY(-2px); }

/* ===== 联系区域 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.contact-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}
.contact-card:hover { border-color: var(--primary-light); transform: translateY(-4px); }
.contact-icon { font-size: 36px; margin-bottom: 14px; }
.contact-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
.contact-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }
.contact-card .qr-img { width: 120px; height: 120px; margin: 12px auto 0; border-radius: 8px; border: 2px solid var(--border); object-fit: cover; }

/* ===== 社交分享 ===== */
.share-bar {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 24px 0;
}
.share-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: var(--gradient-card);
}
.share-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); color: #fff; }
.share-btn.wechat:hover { border-color: #07C160; background: rgba(7,193,96,0.15); }
.share-btn.weibo:hover { border-color: #E6162D; background: rgba(230,22,45,0.15); }
.share-btn.douyin:hover { border-color: #FE2C55; background: rgba(254,44,85,0.15); }
.share-btn.bilibili:hover { border-color: #00A1D6; background: rgba(0,161,214,0.15); }

/* ===== 加入社区步骤 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  counter-reset: step;
}
.step-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  position: relative;
  transition: var(--transition);
}
.step-card:hover { border-color: var(--primary-light); transform: translateY(-4px); }
.step-num {
  width: 44px;
  height: 44px;
  background: var(--gradient-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 900;
  color: #fff;
  margin: 0 auto 14px;
  box-shadow: 0 4px 16px rgba(107,33,168,0.4);
}
.step-card h4 { font-size: 15px; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
.step-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ===== AI功能区 ===== */
.ai-section-banner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
}
.ai-section-banner img { width: 100%; height: 300px; object-fit: cover; }
.ai-section-banner .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15,10,30,0.92) 40%, rgba(15,10,30,0.4));
  display: flex;
  align-items: center;
  padding: 0 40px;
}
.ai-section-banner .overlay-content h2 { font-size: 2rem; font-weight: 900; margin-bottom: 10px; }
.ai-section-banner .overlay-content p { color: var(--text-secondary); max-width: 400px; }

/* ===== 页脚 ===== */
footer {
  background: #08051A;
  border-top: 1px solid var(--border);
  padding: 60px 20px 24px;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .brand-name {
  font-size: 24px;
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  display: block;
}
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.footer-qr-row { display: flex; gap: 16px; }
.footer-qr-item { text-align: center; }
.footer-qr-item img { width: 80px; height: 80px; border-radius: 8px; border: 1px solid var(--border); margin-bottom: 6px; }
.footer-qr-item span { font-size: 11px; color: var(--text-muted); }
.footer-col h4 { font-size: 14px; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 13px; color: var(--text-muted); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: gap;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 14px 0;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--text-secondary); }

/* ===== 页面标题区 ===== */
.page-hero {
  background: var(--bg-section);
  border-bottom: 1px solid var(--border);
  padding: 40px 20px;
}
.page-hero-inner { max-width: 1280px; margin: 0 auto; }
.page-hero h1 { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 900; margin-bottom: 10px; }
.page-hero p { color: var(--text-secondary); font-size: 15px; max-width: 600px; line-height: 1.8; }

/* ===== 标签筛选 ===== */
.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.filter-tab {
  padding: 7px 18px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: transparent;
}
.filter-tab:hover, .filter-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===== 统计数字 ===== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
  margin: 40px 0;
}
.stat-box {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
}
.stat-box .num {
  font-size: 2rem;
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}
.stat-box .label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ===== 加载更多 ===== */
.load-more-wrap { text-align: center; margin-top: 40px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; background: rgba(15,10,30,0.98); flex-direction: column; padding: 16px; border-bottom: 1px solid var(--border); gap: 4px; z-index: 999; }
  .nav-links.open { display: flex; }
  .nav-mobile-toggle { display: flex; }
  .btn-join { display: none; }
  .nav-right .search-form { display: none; }
  .hero { min-height: 400px; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .search-hot-tags { display: none; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 1.7rem; }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn-primary, .hero-btns .btn-outline { width: 100%; justify-content: center; }
  .video-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .section { padding: 48px 0; }
}

/* ===== 动画 ===== */
@keyframes fadeInUp { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:0.6; } }
.animate-fadeInUp { animation: fadeInUp 0.6s ease forwards; }
.live-dot { display: inline-block; width: 8px; height: 8px; background: #EF4444; border-radius: 50%; animation: pulse 1.5s infinite; margin-right: 4px; }

/* ===== 内页文章 ===== */
.article-content { max-width: 900px; }
.article-content h2 { font-size: 1.5rem; font-weight: 800; margin: 32px 0 14px; color: var(--text-primary); }
.article-content h3 { font-size: 1.2rem; font-weight: 700; margin: 24px 0 10px; color: var(--text-secondary); }
.article-content p { font-size: 15px; color: var(--text-secondary); line-height: 1.9; margin-bottom: 16px; }
.article-content ul { margin: 12px 0 16px 20px; list-style: disc; }
.article-content ul li { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 6px; }

/* ===== 图片懒加载占位 ===== */
img[data-src] { background: var(--bg-card); }