/* =============================================
   青柠视频 - 主样式文件
   Brand: 青柠视频 | Domain: qLww9o.cn
   ============================================= */

/* ---- CSS变量 ---- */
:root {
  --primary: #E8336D;
  --primary-dark: #C2185B;
  --primary-light: #FF6B8A;
  --secondary: #FF9A3C;
  --accent: #7C4DFF;
  --bg-dark: #0F0F14;
  --bg-card: #1A1A24;
  --bg-card2: #22222E;
  --text-primary: #F0F0F5;
  --text-secondary: #A0A0B8;
  --text-muted: #6B6B88;
  --border: #2E2E42;
  --gradient-main: linear-gradient(135deg, #E8336D 0%, #FF6B8A 50%, #FF9A3C 100%);
  --gradient-card: linear-gradient(180deg, rgba(232,51,109,0.15) 0%, rgba(15,15,20,0) 100%);
  --shadow-card: 0 8px 32px rgba(232,51,109,0.12);
  --shadow-hover: 0 16px 48px rgba(232,51,109,0.25);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Reset & Base ---- */
*, *::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', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ---- 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
   ============================================= */
.9qer9ft {
  background: var(--gradient-main);
  text-align: center;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.5px;
}
.9qer9ft a { color: #fff; text-decoration: underline; margin-left: 8px; }

/* =============================================
   导航栏
   ============================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,15,20,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  height: 64px;
  gap: 24px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.site-logo img.logo-img {
  height: 38px;
  width: auto;
  object-fit: contain;
}
.site-logo .logo-text {
  font-size: 20px;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.main-nav { flex: 1; }
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav ul li a {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav ul li a:hover,
.main-nav ul li a.active {
  color: var(--primary-light);
  background: rgba(232,51,109,0.1);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.btn-login {
  padding: 8px 18px;
  border: 1px solid var(--primary);
  color: var(--primary-light);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
}
.btn-login:hover { background: var(--primary); color: #fff; }
.btn-join {
  padding: 8px 18px;
  background: var(--gradient-main);
  color: #fff;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-join:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(232,51,109,0.4); }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* =============================================
   搜索栏
   ============================================= */
.search-bar-wrap {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-form {
  flex: 1;
  display: flex;
  align-items: center;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 8px 16px;
  gap: 10px;
  max-width: 600px;
  transition: var(--transition);
}
.search-form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232,51,109,0.15);
}
.search-form input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 14px;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form button {
  background: var(--gradient-main);
  border: none;
  color: #fff;
  padding: 6px 16px;
  border-radius: 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}
.search-form button:hover { opacity: 0.9; }
.search-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.search-tags span {
  font-size: 12px;
  color: var(--text-muted);
}
.search-tags a {
  font-size: 12px;
  color: var(--text-secondary);
  padding: 3px 10px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: var(--transition);
}
.search-tags a:hover { color: var(--primary-light); border-color: var(--primary); }

/* =============================================
   通用布局
   ============================================= */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}
.section { padding: 60px 0; }
.section-sm { padding: 40px 0; }
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 24px;
  background: var(--gradient-main);
  border-radius: 2px;
}
.section-more {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.section-more:hover { color: var(--primary-light); }
.section-more::after { content: '›'; font-size: 16px; }

/* =============================================
   Hero 区域
   ============================================= */
.hero-section {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.igw50m {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-banner.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(0.4);
}
.tjaw8c3 {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,15,20,0.85) 0%, rgba(232,51,109,0.2) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 20px;
}
.j1cec {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(232,51,109,0.2);
  border: 1px solid rgba(232,51,109,0.4);
  color: var(--primary-light);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.j1cec::before { content: '●'; font-size: 8px; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.3} }
.hero-h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.hero-h1 .brand { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--gradient-main);
  color: #fff;
  border-radius: 28px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 24px rgba(232,51,109,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(232,51,109,0.5); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  border-radius: 28px;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.5); }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.hero-stat { text-align: left; }
.hero-stat .num {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat .label { font-size: 13px; color: var(--text-muted); margin-top: 2px; }

/* =============================================
   视频卡片
   ============================================= */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.video-grid-4 { grid-template-columns: repeat(4, 1fr); }
.video-grid-3 { grid-template-columns: repeat(3, 1fr); }
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(232,51,109,0.3);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-card2);
}
.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); }
.video-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 .video-play-btn { opacity: 1; }
.play-icon {
  width: 52px;
  height: 52px;
  background: rgba(232,51,109,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
.play-icon::after {
  content: '';
  border-left: 18px solid #fff;
  border-top: 11px solid transparent;
  border-bottom: 11px solid transparent;
  margin-left: 4px;
}
.video-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--gradient-main);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
}
.video-info { padding: 14px; }
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 8px;
  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 .author { color: var(--text-secondary); font-weight: 500; }
.video-stats {
  display: flex;
  gap: 12px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
}
.video-stats span { display: flex; align-items: center; gap: 4px; }

/* =============================================
   分类标签
   ============================================= */
.cat-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.cat-tab {
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: var(--bg-card);
  cursor: pointer;
  transition: var(--transition);
}
.cat-tab:hover, .cat-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* =============================================
   专家卡片
   ============================================= */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(232,51,109,0.3); }
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--primary);
}
.expert-name { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.expert-title { font-size: 13px; color: var(--primary-light); margin-bottom: 12px; font-weight: 500; }
.expert-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
.expert-tags { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; margin-bottom: 16px; }
.expert-tag { font-size: 11px; padding: 3px 10px; background: rgba(232,51,109,0.1); color: var(--primary-light); border-radius: 10px; }
.expert-actions { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 7px 16px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  transition: var(--transition);
}
.btn-sm-primary { background: var(--gradient-main); color: #fff; }
.btn-sm-outline { border: 1px solid var(--primary); color: var(--primary-light); }
.btn-sm-outline:hover { background: var(--primary); color: #fff; }

/* =============================================
   FAQ
   ============================================= */
.faq-list { max-width: 800px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: rgba(232,51,109,0.4); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-card);
  transition: var(--transition);
  gap: 12px;
}
.faq-question:hover { color: var(--primary-light); }
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(232,51,109,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
  color: var(--primary-light);
  font-size: 16px;
  font-weight: 700;
}
.faq-item.open .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer {
  display: none;
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  background: var(--bg-card);
}
.faq-item.open .faq-answer { display: block; }

/* =============================================
   用户评论
   ============================================= */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.review-card:hover { border-color: rgba(232,51,109,0.3); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-user-info .name { font-size: 14px; font-weight: 600; }
.review-user-info .date { font-size: 12px; color: var(--text-muted); }
.review-stars { color: #FFB800; font-size: 14px; margin-bottom: 10px; }
.review-text { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.review-tag { display: inline-block; margin-top: 10px; font-size: 11px; padding: 3px 10px; background: rgba(232,51,109,0.1); color: var(--primary-light); border-radius: 10px; }

/* =============================================
   合作品牌
   ============================================= */
.partner-grid {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
}
.partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-item:hover { color: var(--primary-light); border-color: var(--primary); }

/* =============================================
   联系区域
   ============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.contact-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  text-align: center;
}
.contact-icon {
  width: 56px;
  height: 56px;
  background: rgba(232,51,109,0.15);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 24px;
}
.contact-label { font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.contact-value { font-size: 15px; font-weight: 600; color: var(--text-primary); }
.qr-img { width: 120px; height: 120px; margin: 12px auto 0; border-radius: 8px; background: #fff; padding: 8px; }

/* =============================================
   底部
   ============================================= */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-text {
  font-size: 22px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.8; max-width: 280px; }
.footer-social { display: flex; gap: 10px; margin-top: 20px; }
.social-btn {
  width: 36px;
  height: 36px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}
.social-btn:hover { background: var(--primary); border-color: var(--primary); }
.footer-col h4 { font-size: 14px; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
.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(--primary-light); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 12px; color: var(--text-muted); }
.footer-bottom a { color: var(--text-muted); transition: var(--transition); }
.footer-bottom a:hover { color: var(--primary-light); }
.footer-links { display: flex; gap: 16px; }
.footer-links a { font-size: 12px; color: var(--text-muted); }

/* =============================================
   分享按钮
   ============================================= */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 16px 0;
}
.share-label { font-size: 13px; color: var(--text-muted); }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: var(--bg-card);
  transition: var(--transition);
  cursor: pointer;
}
.share-btn:hover { border-color: var(--primary); color: var(--primary-light); }
.share-btn.wechat:hover { border-color: #07C160; color: #07C160; }
.share-btn.weibo:hover { border-color: #E6162D; color: #E6162D; }
.share-btn.douyin:hover { border-color: #FE2C55; color: #FE2C55; }
.share-btn.bilibili:hover { border-color: #00A1D6; color: #00A1D6; }

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

/* =============================================
   视频播放器页
   ============================================= */
.video-player-wrap {
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16/9;
  position: relative;
}
.video-player-wrap video, .video-player-wrap iframe {
  width: 100%;
  height: 100%;
  display: block;
}

/* =============================================
   统计数字
   ============================================= */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  border: 1px solid var(--border);
}
.stat-num {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 13px; color: var(--text-muted); margin-top: 6px; }

/* =============================================
   How-To 步骤
   ============================================= */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.step-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 20px;
  border: 1px solid var(--border);
  text-align: center;
  position: relative;
}
.step-num {
  width: 44px;
  height: 44px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 16px;
}
.step-title { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.step-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }

/* =============================================
   标签云
   ============================================= */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 5px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: var(--transition);
}
.tag:hover { background: rgba(232,51,109,0.1); border-color: var(--primary); color: var(--primary-light); }

/* =============================================
   内页侧边栏
   ============================================= */
.page-layout { display: grid; grid-template-columns: 1fr 300px; gap: 32px; }
.sidebar-widget {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  margin-bottom: 20px;
}
.widget-title { font-size: 15px; font-weight: 700; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1024px) {
  .video-grid-4 { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .page-layout { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open { display: block; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg-dark); border-bottom: 1px solid var(--border); padding: 16px; }
  .main-nav.open ul { flex-direction: column; }
  .hamburger { display: flex; }
  .header-actions .btn-login { display: none; }
  .video-grid-4, .video-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .hero-h1 { font-size: 28px; }
  .hero-stats { gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .search-tags { display: none; }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .video-grid-4, .video-grid-3, .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
}

/* =============================================
   动画
   ============================================= */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.vbcnf52 { animation: fadeInUp 0.6s ease forwards; }
.vbcnf52-delay-1 { animation-delay: 0.1s; }
.vbcnf52-delay-2 { animation-delay: 0.2s; }
.vbcnf52-delay-3 { animation-delay: 0.3s; }

/* =============================================
   Loading 懒加载占位
   ============================================= */
img[loading="lazy"] { background: var(--bg-card2); }

/* =============================================
   更新时间
   ============================================= */
.update-time { font-size: 12px; color: var(--text-muted); }

/* =============================================
   广告位样式
   ============================================= */
.yxptv,
.wco2ib2 {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}
.wco2ib2 { border-top: 1px solid var(--border); border-bottom: none; }
.th1vr { width: 100%; }
.k395e2h {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60px;
  background: linear-gradient(90deg, rgba(232,51,109,0.06) 0%, rgba(255,154,60,0.06) 100%);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* =============================================
   Logo 双图（favicon小图 + 完整Logo）
   ============================================= */
.logo-favicon {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 6px;
  flex-shrink: 0;
}
.logo-full {
  height: 36px;
  width: auto;
  object-fit: contain;
  display: none; /* 默认隐藏完整Logo，宽屏显示 */
}
@media (min-width: 900px) {
  .logo-full { display: block; }
}
.site-logo .logo-text {
  font-size: 20px;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
  display: none; /* 有logo图时隐藏文字 */
}
/* 若logo图加载失败则显示文字 */
.logo-full.error + .logo-text,
.site-logo:not(:has(.logo-full)) .logo-text { display: block; }

/* =============================================
   页脚Logo链接
   ============================================= */
.footer-logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-logo-link .logo-text {
  font-size: 20px;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 14px;
}
.footer-qr-row {
  display: flex;
  gap: 16px;
  margin-top: 14px;
}
.footer-qr-item {
  text-align: center;
}
.footer-qr-item img {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  background: #fff;
  padding: 4px;
  border: 1px solid var(--border);
}
.footer-qr-item p {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 5px;
}

/* =============================================
   页脚友情链接行
   ============================================= */
.footer-links-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
  font-size: 13px;
}
.footer-links-row .fl-label {
  color: var(--text-muted);
  flex-shrink: 0;
}
.footer-links-row a {
  color: var(--text-secondary);
  font-size: 13px;
  transition: var(--transition);
}
.footer-links-row a:hover { color: var(--primary-light); }

/* =============================================
   页脚底部版权行
   ============================================= */
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 16px;
}
.footer-copyright p { font-size: 13px; color: var(--text-muted); line-height: 1.8; }
.footer-copyright a { color: var(--primary-light); }
.footer-nav-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-nav-links a {
  font-size: 12px;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-nav-links a:hover { color: var(--primary-light); }

/* =============================================
   回到顶部按钮
   ============================================= */
#sc69br {
  position: fixed;
  bottom: 32px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--gradient-main);
  color: #fff;
  border-radius: 50%;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(232,51,109,0.4);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 999;
  border: none;
  cursor: pointer;
}
#sc69br.show { opacity: 1; pointer-events: auto; }
#sc69br:hover { transform: translateY(-3px); }

/* =============================================
   Toast 提示
   ============================================= */
.toast {
  position: fixed;
  bottom: 90px;
  right: 24px;
  background: rgba(30,30,40,0.95);
  color: var(--text-primary);
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  z-index: 9999;
  max-width: 280px;
}
.toast.show { opacity: 1; }

/* =============================================
   隐私/条款/404 页面
   ============================================= */
.policy-page { max-width: 860px; margin: 0 auto; padding: 40px 20px 80px; }
.policy-page h1 { font-size: 28px; font-weight: 800; margin-bottom: 8px; }
.policy-page .policy-meta { font-size: 13px; color: var(--text-muted); margin-bottom: 32px; }
.policy-page h2 { font-size: 18px; font-weight: 700; margin: 28px 0 12px; color: var(--primary-light); }
.policy-page p, .policy-page li { font-size: 14px; color: var(--text-secondary); line-height: 1.9; margin-bottom: 10px; }
.policy-page ul { padding-left: 20px; list-style: disc; }
.error-page { text-align: center; padding: 80px 20px; }
.error-page .error-code { font-size: 120px; font-weight: 900; background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; }
.error-page h1 { font-size: 24px; margin: 16px 0 8px; }
.error-page p { color: var(--text-secondary); margin-bottom: 32px; }

/* =============================================
   热搜标签样式
   ============================================= */
.hot-label { color: var(--text-muted); font-size: 13px; }

/* =============================================
   响应式补充
   ============================================= */
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .footer-links-row { display: none; }
  .k395e2h { min-height: 48px; font-size: 12px; }
  .footer-qr-row { gap: 12px; }
  .footer-qr-item img { width: 64px; height: 64px; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  #sc69br { bottom: 20px; right: 16px; }
}