/* ================================================
   探花官网 - 主样式文件
   hybmv95.cn
   ================================================ */

/* CSS变量 */
:root {
  --primary: #C41E3A;
  --primary-dark: #9a1630;
  --gold: #D4AF37;
  --gold-light: #f0d060;
  --dark: #0d0618;
  --dark-2: #1a0a2e;
  --dark-3: #2a1245;
  --dark-4: #3d1a5c;
  --text-light: #e8e0f0;
  --text-muted: #a090c0;
  --border: rgba(212,175,55,0.2);
  --card-bg: rgba(26,10,46,0.8);
  --gradient-hero: linear-gradient(135deg, #0d0618 0%, #1a0a2e 40%, #2a1245 100%);
  --gradient-card: linear-gradient(145deg, rgba(42,18,69,0.9), rgba(13,6,24,0.95));
  --shadow: 0 8px 32px rgba(196,30,58,0.2);
  --shadow-gold: 0 4px 20px rgba(212,175,55,0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
  --bg-dark: #0d0618;
}

/* 基础重置 */
*, *::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', 'Noto Sans SC', sans-serif;
  background: var(--dark);
  color: var(--text-light);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--gold); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--gold-light); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; outline: none; }

/* ================================================
   导航栏
   ================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,6,24,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.site-logo img {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  object-fit: cover;
}
.site-logo .brand-name {
  font-size: 1.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
}
.site-logo .brand-sub {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  display: block;
  margin-top: -4px;
}
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 500;
  white-space: nowrap;
  transition: var(--transition);
}
.main-nav a:hover, .main-nav a.active {
  color: var(--gold);
  background: rgba(212,175,55,0.1);
}
.nav-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff !important;
  padding: 8px 18px !important;
  border-radius: 20px !important;
  font-weight: 700 !important;
}
.nav-btn:hover { background: linear-gradient(135deg, #e02244, var(--primary)) !important; transform: translateY(-1px); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--text-light); border-radius: 2px; transition: var(--transition); }

/* 搜索栏 */
.search-bar-wrap {
  background: rgba(26,10,46,0.9);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  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: 24px;
  overflow: hidden;
  width: 100%;
  max-width: 600px;
  transition: var(--transition);
}
.search-form:focus-within { border-color: var(--gold); box-shadow: 0 0 0 2px rgba(212,175,55,0.15); }
.search-form input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 10px 18px;
  color: var(--text-light);
  font-size: 0.9rem;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form button {
  background: linear-gradient(135deg, var(--primary), var(--gold));
  color: #fff;
  padding: 10px 22px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 0 24px 24px 0;
  transition: var(--transition);
}
.search-form button:hover { opacity: 0.9; }
.search-hot-tags { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.search-hot-tags span { font-size: 0.78rem; color: var(--text-muted); }
.hot-tag {
  font-size: 0.78rem;
  padding: 3px 10px;
  border-radius: 12px;
  background: rgba(196,30,58,0.15);
  color: var(--primary);
  border: 1px solid rgba(196,30,58,0.3);
  cursor: pointer;
  transition: var(--transition);
}
.hot-tag:hover { background: var(--primary); color: #fff; }

/* ================================================
   面包屑
   ================================================ */
.breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current { color: var(--gold); }

/* ================================================
   Hero Banner
   ================================================ */
.hero-section {
  position: relative;
  min-height: 580px;
  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: 0.25;
  transition: opacity 0.5s;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,6,24,0.9) 0%, rgba(26,10,46,0.7) 50%, rgba(13,6,24,0.85) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-text h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 0%, var(--gold) 60%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-text .subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 30px;
  line-height: 1.8;
}
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.hero-tag {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid;
}
.hero-tag.red { background: rgba(196,30,58,0.2); border-color: var(--primary); color: #ff6b8a; }
.hero-tag.gold { background: rgba(212,175,55,0.15); border-color: var(--gold); color: var(--gold); }
.hero-tag.purple { background: rgba(150,80,220,0.15); border-color: #9650dc; color: #c090ff; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--primary), #e02244);
  color: #fff;
  border-radius: 30px;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(196,30,58,0.4); color: #fff; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: var(--gold);
  border: 2px solid var(--gold);
  border-radius: 30px;
  font-weight: 700;
  font-size: 1rem;
  transition: var(--transition);
}
.btn-outline:hover { background: var(--gold); color: var(--dark); transform: translateY(-3px); }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.stat-item { text-align: center; }
.stat-num { font-size: 2rem; font-weight: 900; color: var(--gold); display: block; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); }
.hero-visual { position: relative; }
.hero-img-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  border: 1px solid var(--border);
  position: relative;
}
.hero-img-wrap img { width: 100%; height: 380px; object-fit: cover; }
.hero-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(13,6,24,0.9);
  border: 1px solid var(--gold);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero-badge .badge-icon { font-size: 1.5rem; }
.hero-badge .badge-text strong { display: block; color: var(--gold); font-size: 0.9rem; }
.hero-badge .badge-text span { font-size: 0.75rem; color: var(--text-muted); }

/* ================================================
   通用区块样式
   ================================================ */
.section { padding: 80px 0; }
.section-alt { background: rgba(26,10,46,0.4); }
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.section-header { text-align: center; margin-bottom: 50px; }
.section-tag {
  display: inline-block;
  padding: 5px 16px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: rgba(196,30,58,0.15);
  border: 1px solid rgba(196,30,58,0.4);
  color: var(--primary);
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 900;
  color: #fff;
  margin-bottom: 14px;
  line-height: 1.3;
}
.section-title span { color: var(--gold); }
.section-desc { font-size: 1rem; color: var(--text-muted); max-width: 600px; margin: 0 auto; line-height: 1.8; }
.divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  margin: 16px auto 0;
  border-radius: 2px;
}

/* ================================================
   视频卡片
   ================================================ */
.video-grid { display: grid; gap: 24px; }
.video-grid-4 { grid-template-columns: repeat(4, 1fr); }
.video-grid-3 { grid-template-columns: repeat(3, 1fr); }
.video-grid-2 { grid-template-columns: repeat(2, 1fr); }
.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: rgba(212,175,55,0.4); }
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--dark-3);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.08); }
.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 .play-btn { opacity: 1; }
.play-circle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(196,30,58,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  box-shadow: 0 4px 20px rgba(196,30,58,0.5);
  transition: transform 0.2s;
}
.play-circle:hover { transform: scale(1.1); }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.8);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-badge-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 700;
}
.video-info { padding: 16px; }
.video-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta { display: flex; align-items: center; gap: 12px; font-size: 0.78rem; color: var(--text-muted); }
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-author { display: flex; align-items: center; gap: 8px; margin-top: 10px; }
.video-author img { width: 24px; height: 24px; border-radius: 50%; object-fit: cover; }
.video-author span { font-size: 0.8rem; color: var(--text-muted); }

/* ================================================
   图片卡片
   ================================================ */
.img-card {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: var(--transition);
}
.img-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.img-card img { width: 100%; height: 260px; object-fit: cover; transition: transform 0.4s; }
.img-card:hover img { transform: scale(1.06); }
.img-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  padding: 30px 16px 16px;
  transform: translateY(100%);
  transition: var(--transition);
}
.img-card:hover .img-card-overlay { transform: translateY(0); }
.img-card-overlay h4 { font-size: 0.95rem; color: #fff; margin-bottom: 4px; }
.img-card-overlay p { font-size: 0.78rem; color: rgba(255,255,255,0.7); }

/* ================================================
   专家卡片
   ================================================ */
.expert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.expert-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}
.expert-card:hover { transform: translateY(-6px); border-color: var(--gold); box-shadow: var(--shadow-gold); }
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--gold);
  box-shadow: 0 4px 20px rgba(212,175,55,0.3);
}
.expert-name { font-size: 1.1rem; font-weight: 800; color: #fff; margin-bottom: 4px; }
.expert-title { font-size: 0.82rem; color: var(--primary); font-weight: 600; margin-bottom: 12px; }
.expert-desc { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.expert-awards { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; margin-bottom: 16px; }
.award-tag {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 10px;
  background: rgba(212,175,55,0.1);
  border: 1px solid rgba(212,175,55,0.3);
  color: var(--gold);
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 7px 16px;
  border-radius: 16px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: var(--transition);
}
.btn-sm.primary { background: var(--primary); color: #fff; }
.btn-sm.primary:hover { background: var(--primary-dark); color: #fff; }
.btn-sm.outline { border: 1px solid var(--gold); color: var(--gold); }
.btn-sm.outline:hover { background: var(--gold); color: var(--dark); }

/* ================================================
   合作品牌Logo墙
   ================================================ */
.partners-grid { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; align-items: center; }
.partner-item {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 28px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-item:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-3px); }

/* ================================================
   FAQ
   ================================================ */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--gold); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  gap: 16px;
}
.faq-question:hover { color: var(--gold); }
.faq-icon { font-size: 1.2rem; color: var(--gold); transition: transform 0.3s; flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 20px; }

/* ================================================
   用户评价
   ================================================ */
.reviews-grid { display: grid; grid-template-columns: repeat(4, 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 { transform: translateY(-4px); border-color: rgba(212,175,55,0.4); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--gold));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.review-user strong { display: block; font-size: 0.92rem; color: #fff; }
.review-user span { font-size: 0.75rem; color: var(--text-muted); }
.review-stars { color: var(--gold); font-size: 0.85rem; margin-bottom: 10px; }
.review-text { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; }
.review-tag { margin-top: 12px; }
.review-tag span {
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 10px;
  background: rgba(196,30,58,0.1);
  border: 1px solid rgba(196,30,58,0.3);
  color: var(--primary);
}

/* ================================================
   加入社区指南
   ================================================ */
.join-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-item {
  text-align: center;
  padding: 30px 20px;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  transition: var(--transition);
}
.step-item:hover { border-color: var(--gold); transform: translateY(-4px); }
.step-num {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--gold));
  color: #fff;
  font-size: 1.3rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.step-title { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.step-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

/* ================================================
   联系我们
   ================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-info h3 { font-size: 1.3rem; font-weight: 800; color: #fff; margin-bottom: 20px; }
.contact-item { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 20px; }
.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(196,30,58,0.15);
  border: 1px solid rgba(196,30,58,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-label { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 2px; }
.contact-value { font-size: 0.95rem; color: #fff; font-weight: 600; }
.qr-group { display: flex; gap: 24px; flex-wrap: wrap; }
.qr-item { text-align: center; }
.qr-item img {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  margin-bottom: 8px;
}
.qr-item p { font-size: 0.8rem; color: var(--text-muted); }
.community-entries { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.entry-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-light);
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
}
.entry-btn:hover { border-color: var(--gold); color: var(--gold); transform: translateX(4px); }
.entry-btn .entry-icon { font-size: 1.3rem; }

/* ================================================
   社交分享
   ================================================ */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 20px 0;
}
.share-label { font-size: 0.9rem; color: var(--text-muted); font-weight: 600; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid;
  transition: var(--transition);
}
.share-btn:hover { transform: translateY(-2px); }
.share-wechat { border-color: #07c160; color: #07c160; }
.share-wechat:hover { background: #07c160; color: #fff; }
.share-weibo { border-color: #e6162d; color: #e6162d; }
.share-weibo:hover { background: #e6162d; color: #fff; }
.share-douyin { border-color: #fe2c55; color: #fe2c55; }
.share-douyin:hover { background: #fe2c55; color: #fff; }
.share-bilibili { border-color: #00a1d6; color: #00a1d6; }
.share-bilibili:hover { background: #00a1d6; color: #fff; }

/* ================================================
   页脚
   ================================================ */
.site-footer {
  background: rgba(8,3,16,0.98);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .brand-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .brand-logo img { width: 40px; height: 40px; border-radius: 8px; }
.footer-brand .brand-logo span {
  font-size: 1.3rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.social-icon:hover { border-color: var(--gold); color: var(--gold); background: rgba(212,175,55,0.1); }
.footer-col h4 { font-size: 1rem; font-weight: 700; color: #fff; 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: 0.85rem; color: var(--text-muted); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--gold); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copyright { font-size: 0.82rem; color: var(--text-muted); }
.footer-copyright a { color: var(--gold); }
.footer-update { font-size: 0.78rem; color: var(--text-muted); }
.footer-links { display: flex; gap: 16px; }
.footer-links a { font-size: 0.82rem; color: var(--text-muted); }
.footer-links a:hover { color: var(--gold); }

/* ================================================
   内页Hero
   ================================================ */
.page-hero {
  background: var(--gradient-hero);
  padding: 60px 0 50px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(196,30,58,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 900; color: #fff; margin-bottom: 12px; }
.page-hero h1 span { color: var(--gold); }
.page-hero p { font-size: 1rem; color: var(--text-muted); max-width: 700px; line-height: 1.8; }

/* ================================================
   标签筛选
   ================================================ */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 32px; }
.filter-btn {
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ================================================
   特性卡片
   ================================================ */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); border-color: var(--gold); box-shadow: var(--shadow-gold); }
.feature-icon { font-size: 2.5rem; margin-bottom: 16px; }
.feature-title { font-size: 1.1rem; font-weight: 800; color: #fff; margin-bottom: 10px; }
.feature-desc { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; }

/* ================================================
   统计数字
   ================================================ */
.stats-bar {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 40px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stats-item { padding: 10px; }
.stats-item .num { font-size: 2.4rem; font-weight: 900; color: #fff; display: block; }
.stats-item .label { font-size: 0.85rem; color: rgba(255,255,255,0.8); margin-top: 4px; }

/* ================================================
   加载动画
   ================================================ */
.lazy-img { opacity: 0; transition: opacity 0.5s; }
.lazy-img.loaded { opacity: 1; }

/* ================================================
   滚动动画
   ================================================ */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ================================================
   响应式
   ================================================ */
@media (max-width: 1100px) {
  .video-grid-4 { grid-template-columns: repeat(3, 1fr); }
  .expert-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .video-grid-4, .video-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .join-steps { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .main-nav { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: rgba(13,6,24,0.98); padding: 16px; border-bottom: 1px solid var(--border); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 16px; border-radius: var(--radius-sm); }
  .hamburger { display: flex; }
  .search-hot-tags { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 560px) {
  .video-grid-4, .video-grid-3, .video-grid-2 { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .join-steps { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
}

/* ================================================
   辅助工具类
   ================================================ */
.text-center { text-align: center; }
.text-gold { color: var(--gold); }
.text-red { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.hidden { display: none; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }

/* ================================================
   视频播放弹窗
   ================================================ */
.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; }
.video-modal-inner {
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 800px;
  width: 90%;
  position: relative;
}
.video-modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  background: none;
  border: none;
  line-height: 1;
}
.video-modal-close:hover { color: var(--primary); }
.video-placeholder {
  background: var(--dark-3);
  border-radius: var(--radius-sm);
  aspect-ratio: 16/9;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.video-placeholder .big-play { font-size: 4rem; color: var(--primary); }

/* ================================================
   内容详情页
   ================================================ */
.content-body { max-width: 900px; margin: 0 auto; }
.content-body h2 { font-size: 1.5rem; font-weight: 800; color: #fff; margin: 30px 0 14px; }
.content-body h3 { font-size: 1.2rem; font-weight: 700; color: var(--gold); margin: 24px 0 10px; }
.content-body p { color: var(--text-muted); line-height: 1.9; margin-bottom: 16px; }
.content-body ul { margin: 12px 0 16px 20px; }
.content-body ul li { color: var(--text-muted); line-height: 1.8; list-style: disc; margin-bottom: 6px; }

/* ================================================
   通知条
   ================================================ */
.notice-bar {
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 0.85rem;
  padding: 8px 0;
  text-align: center;
  overflow: hidden;
}
.notice-inner { display: flex; align-items: center; justify-content: center; gap: 12px; }
.notice-tag {
  background: rgba(255,255,255,0.2);
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 0.75rem;
  font-weight: 700;
}