/* =============================================
   媚黑 - 动漫传媒社区 | jrnwfok.cn
   原创CSS主题：深夜蓝 + 霓虹橙 + 星光白
   ============================================= */

/* ---- 1. CSS变量与全局重置 ---- */
:root {
  --primary:    #0D1B3E;   /* 深夜蓝 */
  --secondary:  #1A2F6B;   /* 星空蓝 */
  --accent:     #FF7A00;   /* 霓虹橙 */
  --accent2:    #FFB347;   /* 暖橙 */
  --neon:       #00D4FF;   /* 霓虹青 */
  --text:       #E8EDF5;   /* 星光白 */
  --text-muted: #8A9BBF;   /* 灰蓝 */
  --card-bg:    #142050;   /* 卡片深蓝 */
  --border:     #253A6E;   /* 边框蓝 */
  --gradient1:  linear-gradient(135deg, #0D1B3E 0%, #1A2F6B 50%, #0D1B3E 100%);
  --gradient2:  linear-gradient(135deg, #FF7A00 0%, #FFB347 100%);
  --gradient3:  linear-gradient(180deg, #0D1B3E 0%, #091226 100%);
  --shadow:     0 8px 32px rgba(0,0,0,0.4);
  --radius:     12px;
  --radius-sm:  6px;
  --transition: all 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: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  background: var(--primary);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent2); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; }

/* ---- 2. 顶部公告栏 ---- */
.top-bar {
  background: var(--gradient2);
  color: #fff;
  text-align: center;
  padding: 6px 20px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.5px;
}
.top-bar a { color: #fff; text-decoration: underline; }

/* ---- 3. 导航栏 ---- */
.site-header {
  background: rgba(13,27,62,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}
.site-logo img { height: 44px; width: auto; }
.logo-text { font-size: 22px; font-weight: 700; color: var(--accent); letter-spacing: 1px; }

/* 导航菜单 */
.main-nav > ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav > ul > li > a:hover,
.main-nav > ul > li > a.active {
  color: var(--accent);
  background: rgba(255,122,0,0.12);
}
.main-nav > ul > li > a .arrow {
  font-size: 10px;
  transition: transform 0.3s;
}
.main-nav > ul > li:hover > a .arrow { transform: rotate(180deg); }

/* 下拉菜单 */
.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 180px;
  background: #1A2F6B;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
  z-index: 200;
}
.main-nav > ul > li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown li a {
  display: block;
  padding: 10px 18px;
  color: var(--text-muted);
  font-size: 13px;
  transition: var(--transition);
}
.dropdown li a:hover {
  color: var(--accent);
  background: rgba(255,122,0,0.1);
  padding-left: 24px;
}

/* 搜索框 */
.header-search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 6px 16px;
  gap: 8px;
  flex-shrink: 0;
  transition: var(--transition);
}
.header-search:focus-within {
  border-color: var(--accent);
  background: rgba(255,122,0,0.08);
}
.header-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 14px;
  width: 160px;
}
.header-search input::placeholder { color: var(--text-muted); }
.header-search button {
  color: var(--text-muted);
  font-size: 16px;
  transition: var(--transition);
}
.header-search button:hover { color: var(--accent); }

/* 汉堡菜单 */
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }

/* ---- 4. 弹幕滚动栏 ---- */
.danmu-bar {
  background: rgba(255,122,0,0.1);
  border-bottom: 1px solid rgba(255,122,0,0.2);
  padding: 8px 0;
  overflow: hidden;
}
.danmu-inner {
  display: flex;
  align-items: center;
  gap: 0;
  white-space: nowrap;
}
.danmu-label {
  background: var(--accent);
  color: #fff;
  padding: 2px 12px;
  font-size: 12px;
  font-weight: 700;
  border-radius: 0 12px 12px 0;
  margin-right: 20px;
  flex-shrink: 0;
}
.danmu-track {
  display: inline-block;
  animation: danmu-scroll 40s linear infinite;
  font-size: 13px;
  color: var(--text-muted);
}
.danmu-track span { margin: 0 40px; }
.danmu-track span::before { content: '🎬 '; }
@keyframes danmu-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ---- 5. Hero区域（Banner） ---- */
.hero-section {
  position: relative;
  height: 580px;
  overflow: hidden;
}
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.hero-slide.active { opacity: 1; }
.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,27,62,0.85) 0%, rgba(13,27,62,0.4) 60%, transparent 100%);
}
.hero-content {
  position: absolute;
  top: 50%;
  left: 8%;
  transform: translateY(-50%);
  max-width: 580px;
  z-index: 10;
}
.hero-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.hero-content h1 {
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #fff;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.hero-content h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero-content p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--gradient2);
  color: #fff;
  padding: 12px 28px;
  border-radius: 28px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(255,122,0,0.4);
  transition: var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(255,122,0,0.5); color: #fff; }
.btn-outline {
  border: 2px solid rgba(255,255,255,0.6);
  color: #fff;
  padding: 12px 28px;
  border-radius: 28px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(255,122,0,0.1); }

/* Hero指示器 */
.hero-indicators {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}
.hero-indicators span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: var(--transition);
}
.hero-indicators span.active { background: var(--accent); width: 24px; border-radius: 4px; }

/* ---- 6. 统计数字区 ---- */
.stats-bar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.stats-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item .num {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.stat-item .label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---- 7. 通用区块 ---- */
.section { padding: 64px 0; }
.section-alt { background: rgba(26,47,107,0.3); }
.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(255,122,0,0.15);
  color: var(--accent);
  border: 1px solid rgba(255,122,0,0.3);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: clamp(22px, 3vw, 36px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.section-header h2 span { color: var(--accent); }
.section-header p {
  color: var(--text-muted);
  font-size: 15px;
  max-width: 600px;
  margin: 0 auto;
}

/* ---- 8. 视频卡片 ---- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  border-color: var(--accent);
}
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: #0a1530;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s 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);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .play-btn {
  opacity: 1;
  background: rgba(0,0,0,0.45);
}
.play-btn-icon {
  width: 56px;
  height: 56px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(255,122,0,0.6);
  transform: scale(0.8);
  transition: transform 0.3s ease;
}
.video-card:hover .play-btn-icon { transform: scale(1); }
.play-btn-icon::after {
  content: '';
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-info { padding: 14px 16px; }
.video-info h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  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;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }

/* 视频模态框 */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.video-modal.open { display: flex; }
.modal-inner {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 800px;
  width: 90%;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 24px;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}
.modal-close:hover { color: var(--accent); }
.modal-video {
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
}

/* ---- 9. 专家卡片 ---- */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
}
.expert-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 32px rgba(0,0,0,0.4);
}
.expert-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--accent);
}
.expert-card h3 { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.expert-role {
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 10px;
  font-weight: 500;
}
.expert-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.expert-awards { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 16px; }
.award-tag {
  background: rgba(255,122,0,0.12);
  color: var(--accent);
  border: 1px solid rgba(255,122,0,0.25);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
}
.expert-links { display: flex; gap: 10px; justify-content: center; }
.expert-links a {
  background: rgba(255,255,255,0.07);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.expert-links a:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ---- 10. 社区功能卡片 ---- */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.community-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px 20px;
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
}
.community-card:hover {
  transform: translateY(-4px);
  border-color: var(--neon);
  box-shadow: 0 0 20px rgba(0,212,255,0.15);
}
.community-icon {
  font-size: 40px;
  margin-bottom: 14px;
  display: block;
}
.community-card h3 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.community-card p { font-size: 12px; color: var(--text-muted); line-height: 1.6; }
.community-count {
  display: inline-block;
  margin-top: 10px;
  background: rgba(0,212,255,0.1);
  color: var(--neon);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 11px;
}

/* ---- 11. 明星卡片 ---- */
.star-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.star-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.star-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 12px 32px rgba(255,122,0,0.2);
}
.star-photo {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  background: #0a1530;
}
.star-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.star-card:hover .star-photo img { transform: scale(1.06); }
.star-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(13,27,62,0.95));
  padding: 20px 14px 14px;
}
.star-overlay h3 { font-size: 15px; font-weight: 700; color: #fff; }
.star-overlay span { font-size: 12px; color: var(--accent); }
.star-info { padding: 12px 14px; }
.star-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.star-tag {
  background: rgba(255,122,0,0.1);
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: 8px;
  font-size: 11px;
}

/* ---- 12. AI赋能区 ---- */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.ai-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.ai-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient2);
}
.ai-card:hover {
  transform: translateY(-4px);
  border-color: var(--neon);
  box-shadow: 0 0 30px rgba(0,212,255,0.1);
}
.ai-icon { font-size: 36px; margin-bottom: 16px; }
.ai-card h3 { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.ai-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.ai-features { display: flex; flex-wrap: wrap; gap: 8px; }
.ai-feature {
  background: rgba(0,212,255,0.08);
  color: var(--neon);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
}

/* ---- 13. 用户评论 ---- */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.review-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.review-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 600; color: #fff; }
.review-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-muted); line-height: 1.7; }
.review-tag {
  display: inline-block;
  margin-top: 10px;
  background: rgba(255,122,0,0.1);
  color: var(--accent);
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 11px;
}

/* ---- 14. FAQ ---- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--accent); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  background: var(--card-bg);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition);
}
.faq-q:hover { color: var(--accent); }
.faq-q .faq-icon {
  font-size: 20px;
  color: var(--accent);
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item.open .faq-q .faq-icon { transform: rotate(45deg); }
.faq-a {
  display: none;
  padding: 0 24px 18px;
  background: var(--card-bg);
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid var(--border);
}
.faq-item.open .faq-a { display: block; }

/* ---- 15. 合作品牌 ---- */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}
.partner-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
}
.partner-item:hover { border-color: var(--accent); color: var(--accent); }

/* ---- 16. 联系区 ---- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.contact-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
}
.contact-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.contact-icon { font-size: 36px; margin-bottom: 12px; }
.contact-card h3 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.contact-card p { font-size: 13px; color: var(--text-muted); }
.qr-img { width: 100px; height: 100px; margin: 10px auto 0; border-radius: 8px; background: #fff; padding: 4px; }

/* ---- 17. 面包屑 ---- */
.breadcrumb {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb-inner a { color: var(--text-muted); }
.breadcrumb-inner a:hover { color: var(--accent); }
.breadcrumb-inner .sep { color: var(--border); }
.breadcrumb-inner .current { color: var(--accent); }

/* ---- 18. 页脚 ---- */
.site-footer {
  background: #091226;
  border-top: 1px solid var(--border);
  padding: 56px 0 0;
}
.footer-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-text { font-size: 24px; color: var(--accent); font-weight: 800; margin-bottom: 12px; }
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px;
  height: 36px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-social a:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.footer-col h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 13px; color: var(--text-muted); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.footer-trust { display: flex; gap: 16px; flex-wrap: wrap; }
.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}
.trust-item::before { content: '✓'; color: var(--accent); font-weight: 700; }

/* ---- 19. 分享按钮 ---- */
.share-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.share-label { font-size: 13px; color: var(--text-muted); }
.share-btn {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: var(--transition);
}
.share-btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ---- 20. 通用工具类 ---- */
.text-center { text-align: center; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-24 { margin-bottom: 24px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  background: rgba(255,122,0,0.1);
  color: var(--accent);
  border: 1px solid rgba(255,122,0,0.2);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
}
.view-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--accent);
  padding: 8px 20px;
  border-radius: 20px;
  transition: var(--transition);
}
.view-all:hover { background: var(--accent); color: #fff; }
.page-hero {
  background: var(--gradient1);
  padding: 60px 0;
  border-bottom: 1px solid var(--border);
}
.page-hero h1 { font-size: clamp(24px, 3vw, 40px); font-weight: 800; color: #fff; margin-bottom: 10px; }
.page-hero p { font-size: 15px; color: var(--text-muted); }

/* ---- 21. 响应式 ---- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .main-nav { display: none; position: fixed; inset: 68px 0 0 0; background: var(--primary); padding: 20px; overflow-y: auto; z-index: 999; }
  .main-nav.open { display: block; }
  .main-nav > ul { flex-direction: column; gap: 0; }
  .main-nav > ul > li > a { padding: 14px 16px; border-bottom: 1px solid var(--border); }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; background: rgba(255,255,255,0.04); border: none; border-radius: 0; display: none; }
  .main-nav > ul > li.open .dropdown { display: block; }
  .hamburger { display: flex; }
  .header-search { display: none; }
  .hero-section { height: 420px; }
  .hero-content { left: 5%; right: 5%; max-width: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .expert-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .hero-btns { flex-direction: column; }
  .community-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .star-grid { grid-template-columns: repeat(2, 1fr); }
}