/* =============================================
   泄密 - 主样式文件
   Brand: 泄密 | Domain: bdzelp.cn
   ============================================= */

/* ---- CSS变量 ---- */
:root {
  --primary: #e8410a;
  --primary-dark: #c03008;
  --primary-light: #ff6b35;
  --secondary: #1a1a2e;
  --accent: #7c3aed;
  --accent2: #f59e0b;
  --bg-dark: #0f0f1a;
  --bg-card: #16213e;
  --bg-card2: #1e1e3a;
  --text-main: #f0f0f8;
  --text-muted: #a0a0c0;
  --text-dark: #1a1a2e;
  --border: #2a2a4a;
  --gradient-hero: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #16213e 100%);
  --gradient-card: linear-gradient(145deg, #16213e, #1e1e3a);
  --gradient-btn: linear-gradient(135deg, #e8410a, #c03008);
  --shadow: 0 4px 24px rgba(232,65,10,0.15);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 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', '微软雅黑', 'Hiragino Sans GB', sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-light); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; outline: none; }

/* ---- 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: linear-gradient(90deg, var(--primary-dark), var(--accent), var(--primary-dark));
  background-size: 200% 100%;
  animation: gradientShift 4s ease infinite;
  color: #fff;
  text-align: center;
  padding: 8px 20px;
  font-size: 13px;
  letter-spacing: 0.5px;
}
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.top-bar a { color: #fff; font-weight: 600; text-decoration: underline; }

/* =============================================
   导航栏
   ============================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,15,26,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--gradient-btn);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 900;
  color: #fff;
  letter-spacing: -1px;
  box-shadow: 0 4px 12px rgba(232,65,10,0.4);
}
.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
}
.logo-text span { color: var(--primary-light); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.main-nav a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--transition);
  white-space: nowrap;
}
.main-nav a:hover,
.main-nav a.active {
  background: rgba(232,65,10,0.15);
  color: var(--primary-light);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.btn-login {
  padding: 7px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all var(--transition);
}
.btn-login:hover { border-color: var(--primary); color: var(--primary-light); }
.btn-register {
  padding: 7px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  background: var(--gradient-btn);
  color: #fff;
  box-shadow: 0 2px 10px rgba(232,65,10,0.3);
  transition: all var(--transition);
}
.btn-register:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(232,65,10,0.5); }

/* ---- 搜索框 ---- */
.search-bar-wrap {
  background: rgba(22,33,62,0.9);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-form {
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 640px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 30px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.search-form:focus-within { border-color: var(--primary); }
.search-form input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 9px 18px;
  color: var(--text-main);
  font-size: 14px;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form button {
  background: var(--gradient-btn);
  border: none;
  padding: 9px 20px;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  transition: opacity var(--transition);
}
.search-form button:hover { opacity: 0.85; }
.search-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.search-tags a {
  font-size: 12px;
  color: var(--text-muted);
  background: rgba(255,255,255,0.05);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.search-tags a:hover { color: var(--primary-light); border-color: var(--primary); }

/* =============================================
   面包屑
   ============================================= */
.breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 20px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb span { margin: 0 6px; }

/* =============================================
   通用容器
   ============================================= */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}
.section {
  padding: 60px 0;
}
.section-sm { padding: 40px 0; }

/* ---- 区块标题 ---- */
.08m0uh {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.hg2wyru {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-main);
  position: relative;
  padding-left: 16px;
}
.hg2wyru::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 28px;
  background: var(--gradient-btn);
  border-radius: 2px;
}
.hg2wyru em { color: var(--primary-light); font-style: normal; }
.80t7zsy3 {
  font-size: 13px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 20px;
  transition: all var(--transition);
}
.80t7zsy3:hover { color: var(--primary-light); border-color: var(--primary); }

/* =============================================
   Hero 首屏
   ============================================= */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero_banner.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(0.45);
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15,15,26,0.9) 0%, rgba(15,15,26,0.4) 60%, transparent 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 20px;
}
.q4lb274 {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(232,65,10,0.2);
  border: 1px solid rgba(232,65,10,0.4);
  color: var(--primary-light);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 58px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #fff;
}
.hero h1 .brand { color: var(--primary-light); }
.xyh3t {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  max-width: 520px;
  margin-bottom: 28px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  border-radius: 30px;
  box-shadow: 0 4px 20px rgba(232,65,10,0.4);
  transition: all var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(232,65,10,0.6); color: #fff; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 30px;
  border: 2px solid rgba(255,255,255,0.4);
  transition: all var(--transition);
}
.btn-outline:hover { border-color: var(--primary-light); color: var(--primary-light); }
.3l8kvdp2 {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.fc87he { text-align: left; }
.fc87he .num {
  font-size: 28px;
  font-weight: 900;
  color: var(--primary-light);
  display: block;
}
.fc87he .label { font-size: 12px; color: rgba(255,255,255,0.6); }

/* =============================================
   视频卡片
   ============================================= */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--gradient-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #0a0a18;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .play-btn { opacity: 1; }
.play-icon {
  width: 52px;
  height: 52px;
  background: rgba(232,65,10,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(232,65,10,0.5);
  transform: scale(0.8);
  transition: transform var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.play-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;
}
.lx3pw4 {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}
.video-info {
  padding: 14px;
}
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.a1dyh56 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.a1dyh56 span { display: flex; align-items: center; gap: 4px; }

/* ---- 大视频卡片 ---- */
.video-card-lg {
  background: var(--gradient-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card-lg:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.video-card-lg .video-thumb { aspect-ratio: 4/3; }

/* =============================================
   分类标签栏
   ============================================= */
.category-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.cat-tab {
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}
.cat-tab:hover,
.cat-tab.active {
  background: rgba(232,65,10,0.15);
  border-color: var(--primary);
  color: var(--primary-light);
}

/* =============================================
   特色功能区
   ============================================= */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.feature-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all var(--transition);
}
.feature-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  background: rgba(232,65,10,0.12);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}
.feature-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}
.feature-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* =============================================
   AI赋能区块
   ============================================= */
.mviie {
  background: linear-gradient(135deg, rgba(124,58,237,0.1), rgba(232,65,10,0.08));
  border: 1px solid rgba(124,58,237,0.2);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.ti6e6pt h2 {
  font-size: 32px;
  font-weight: 900;
  margin-bottom: 16px;
}
.ti6e6pt h2 span { color: var(--accent); }
.ti6e6pt p { color: var(--text-muted); margin-bottom: 24px; line-height: 1.8; }
.1li9kxi { display: flex; flex-direction: column; gap: 14px; }
.pjsgvdwh {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-muted);
}
.pjsgvdwh .dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}
.jxdu7 { border-radius: var(--radius); overflow: hidden; }
.jxdu7 img { width: 100%; border-radius: var(--radius); }

/* =============================================
   专家团队
   ============================================= */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.expert-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all var(--transition);
}
.expert-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.expert-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 14px;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  border: 3px solid var(--border);
}
.expert-name { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.09s5j99w { font-size: 12px; color: var(--primary-light); margin-bottom: 10px; }
.ygv22 { font-size: 12px; color: var(--text-muted); line-height: 1.6; margin-bottom: 14px; }
.xogogvuw { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; margin-bottom: 14px; }
.00gi0 {
  font-size: 11px;
  background: rgba(232,65,10,0.1);
  color: var(--primary-light);
  padding: 3px 8px;
  border-radius: 10px;
  border: 1px solid rgba(232,65,10,0.2);
}
.expert-actions { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 6px;
  font-weight: 600;
  transition: all var(--transition);
}
.btn-sm-primary {
  background: var(--gradient-btn);
  color: #fff;
}
.btn-sm-outline {
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: transparent;
}
.btn-sm-outline:hover { border-color: var(--primary); color: var(--primary-light); }

/* =============================================
   合作品牌Logo墙
   ============================================= */
.pb8d1 {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}
.yagj2wdq {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  transition: all var(--transition);
  min-width: 120px;
  text-align: center;
}
.yagj2wdq:hover { border-color: var(--primary); color: var(--primary-light); }

/* =============================================
   FAQ
   ============================================= */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--primary); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  gap: 12px;
}
.faq-q .icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(232,65,10,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
  color: var(--primary-light);
  transition: transform var(--transition);
}
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-a {
  display: none;
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.faq-item.open .faq-a { display: block; }

/* =============================================
   用户评价
   ============================================= */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: all var(--transition);
}
.review-card:hover { border-color: var(--primary); 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(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.review-user .name { font-size: 14px; font-weight: 700; }
.review-user .date { font-size: 12px; color: var(--text-muted); }
.tmw1zhf { color: var(--accent2); font-size: 14px; margin-bottom: 10px; }
.36o2v2u { font-size: 13px; color: var(--text-muted); line-height: 1.7; }
.bvxi3z {
  display: inline-block;
  margin-top: 10px;
  font-size: 11px;
  background: rgba(232,65,10,0.1);
  color: var(--primary-light);
  padding: 3px 8px;
  border-radius: 10px;
}

/* =============================================
   How-To 加入社区
   ============================================= */
.m8wfax {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  counter-reset: step;
}
.sacthy1 {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  position: relative;
  transition: all var(--transition);
}
.sacthy1:hover { border-color: var(--primary); transform: translateY(-3px); }
.mmbxg {
  width: 40px;
  height: 40px;
  background: var(--gradient-btn);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 900;
  color: #fff;
  margin: 0 auto 14px;
}
.sacthy1 h4 { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.sacthy1 p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* =============================================
   联系信息
   ============================================= */
.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: 24px;
  transition: all var(--transition);
}
.contact-card:hover { border-color: var(--primary); }
.contact-icon { font-size: 32px; margin-bottom: 12px; }
.contact-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.contact-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* =============================================
   社交分享
   ============================================= */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.tfqfuo { font-size: 14px; color: var(--text-muted); }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
}
.share-wechat { background: #07c160; color: #fff; }
.share-weibo { background: #e6162d; color: #fff; }
.share-douyin { background: #010101; color: #fff; border: 1px solid #333; }
.share-bilibili { background: #00a1d6; color: #fff; }
.share-btn:hover { opacity: 0.85; transform: translateY(-1px); }

/* =============================================
   页脚
   ============================================= */
.site-footer {
  background: #0a0a14;
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.8; max-width: 280px; }
.footer-qr { display: flex; gap: 16px; margin-top: 20px; }
.qr-item { text-align: center; }
.qr-item img {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  border: 2px solid var(--border);
}
.qr-item p { font-size: 11px; color: var(--text-muted); margin-top: 6px; }
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.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: 20px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  max-width: 1280px;
  margin: 0 auto;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }
.footer-copyright {
  background: #0a0a14;
  padding: 16px 20px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid rgba(255,255,255,0.04);
}

/* =============================================
   内页通用
   ============================================= */
.page-hero {
  background: linear-gradient(135deg, rgba(232,65,10,0.1), rgba(124,58,237,0.08));
  border-bottom: 1px solid var(--border);
  padding: 48px 0;
  text-align: center;
}
.page-hero h1 {
  font-size: 36px;
  font-weight: 900;
  margin-bottom: 12px;
}
.page-hero h1 em { color: var(--primary-light); font-style: normal; }
.page-hero p { font-size: 15px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* =============================================
   图片懒加载占位
   ============================================= */
img[data-src] {
  background: linear-gradient(90deg, #16213e 25%, #1e1e3a 50%, #16213e 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1024px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .mviie { grid-template-columns: 1fr; }
  .jxdu7 { display: none; }
}
@media (max-width: 768px) {
  .nav-inner { height: 56px; }
  .main-nav { display: none; }
  .hero { min-height: 380px; }
  .hero h1 { font-size: 28px; }
  .3l8kvdp2 { gap: 20px; }
  .section { padding: 40px 0; }
  .hg2wyru { font-size: 20px; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .video-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: 1fr; }
  .m8wfax { grid-template-columns: repeat(2, 1fr); }
  .search-tags { display: none; }
  .search-form input { width: 100%; min-width: 0; }
  .search-form { width: 100%; }
  .search-bar-inner { padding: 0 12px; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .m8wfax { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .3l8kvdp2 { gap: 12px; }
  .fc87he .num { font-size: 20px; }
  .page-hero h1 { font-size: 24px; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-qr { justify-content: center; }
  .pb8d1 { grid-template-columns: repeat(2, 1fr); }
}

/* =============================================
   汉堡菜单（移动端）
   ============================================= */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition);
}
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .mobile-menu {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: rgba(15,15,26,0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 16px 20px;
    z-index: 999;
    flex-direction: column;
    gap: 4px;
  }
  .mobile-menu.open { display: flex; }
  .mobile-menu a {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 15px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
  }
  .mobile-menu a:last-child { border-bottom: none; }
  .mobile-menu a:hover { color: var(--primary-light); background: rgba(232,65,10,0.08); }
}

/* =============================================
   动画
   ============================================= */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeInUp 0.6s ease both; }
.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }

/* 标签 */
.tag {
  display: inline-block;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 10px;
  font-weight: 600;
}
.tag-hot { background: rgba(232,65,10,0.15); color: var(--primary-light); border: 1px solid rgba(232,65,10,0.25); }
.tag-new { background: rgba(16,185,129,0.15); color: #10b981; border: 1px solid rgba(16,185,129,0.25); }
.tag-rec { background: rgba(124,58,237,0.15); color: #a78bfa; border: 1px solid rgba(124,58,237,0.25); }

/* 分割线 */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

/* 徽章 */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 10px;
  font-weight: 600;
}
.badge-live {
  background: rgba(239,68,68,0.15);
  color: #ef4444;
  border: 1px solid rgba(239,68,68,0.3);
}
.badge-live::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #ef4444;
  border-radius: 50%;
  animation: pulse 1.2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* 内页侧边栏 */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 28px;
  align-items: start;
}
@media (max-width: 900px) {
  .page-layout { grid-template-columns: 1fr; }
}
.sidebar-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.sidebar-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

/* 排行榜 */
.swhm7 { display: flex; flex-direction: column; gap: 12px; }
.9oromi {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
}
.tzn2f {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}
.tzn2f.top1 { background: #f59e0b; color: #000; }
.tzn2f.top2 { background: #9ca3af; color: #000; }
.tzn2f.top3 { background: #cd7c2f; color: #000; }
.tzn2f.other { background: rgba(255,255,255,0.08); color: var(--text-muted); }
.3xqnrw { flex: 1; color: var(--text-main); line-height: 1.4; }
.2n34u { font-size: 11px; color: var(--text-muted); }

/* =============================================
   无障碍：屏幕阅读器专用文字
   ============================================= */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* 键盘focus可见性（百度移动端无障碍要求） */
.play-btn:focus-visible {
  outline: 3px solid var(--primary-light);
  outline-offset: 2px;
}
.play-btn:focus-visible .play-icon {
  transform: scale(1);
  background: rgba(232,65,10,1);
}
.video-card:focus-within .play-btn { opacity: 1; }
.video-card:focus-within .play-icon { transform: scale(1); }

/* 联系页面卡片 */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.contact-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}
.contact-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}
.contact-icon {
  font-size: 32px;
  margin-bottom: 12px;
}
.contact-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}