/* =============================================
   抖阴 - 主样式文件
   品牌色: 玫瑰红 #E8336D | 珊瑚橙 #FF6B6B | 深色背景 #1a1a2e
   ============================================= */

/* --- 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", "Hiragino Sans GB", sans-serif;
  background: #0f0f1a;
  color: #e0e0e0;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color .25s; }
a:hover { color: #E8336D; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* --- CSS变量 --- */
:root {
  --rose: #E8336D;
  --coral: #FF6B6B;
  --gold: #FFD700;
  --dark: #0f0f1a;
  --dark2: #16162a;
  --dark3: #1e1e35;
  --card: #1c1c30;
  --border: rgba(232,51,109,0.2);
  --text: #e0e0e0;
  --text2: #a0a0b8;
  --white: #ffffff;
  --grad: linear-gradient(135deg, #E8336D 0%, #FF6B6B 100%);
  --grad2: linear-gradient(135deg, #1e1e35 0%, #2a1a3e 100%);
  --shadow: 0 8px 32px rgba(232,51,109,0.15);
  --radius: 12px;
  --radius-lg: 20px;
}

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

/* =============================================
   顶部公告栏
   ============================================= */
.top-bar {
  background: var(--grad);
  color: #fff;
  text-align: center;
  padding: 8px 20px;
  font-size: 13px;
  letter-spacing: .5px;
}
.top-bar a { color: #fff; text-decoration: underline; }

/* =============================================
   导航栏
   ============================================= */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,15,26,.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 5%;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1400px;
  margin: 0 auto;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--white);
}
.nav-logo img { height: 40px; width: auto; }
.nav-logo span { background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-favicon { height: 28px; width: 28px; border-radius: 6px; }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-menu a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text2);
  transition: all .25s;
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--white);
  background: rgba(232,51,109,.15);
}
.nav-actions { display: flex; align-items: center; gap: 10px; }
.btn-outline {
  padding: 8px 18px;
  border: 1px solid var(--rose);
  border-radius: 8px;
  color: var(--rose);
  font-size: 13px;
  transition: all .25s;
}
.btn-outline:hover { background: var(--rose); color: #fff; }
.btn-primary {
  padding: 8px 18px;
  background: var(--grad);
  border-radius: 8px;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  transition: opacity .25s;
}
.btn-primary:hover { opacity: .85; color: #fff; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s; }

/* --- 搜索栏 --- */
.search-bar-wrap {
  background: var(--dark2);
  border-bottom: 1px solid var(--border);
  padding: 10px 5%;
}
.search-bar-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
}
.search-form {
  display: flex;
  align-items: center;
  background: var(--dark3);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  width: 100%;
  max-width: 600px;
}
.search-form input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  padding: 10px 18px;
  color: var(--text);
  font-size: 14px;
}
.search-form input::placeholder { color: var(--text2); }
.search-form button {
  background: var(--grad);
  border: none;
  padding: 10px 20px;
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  transition: opacity .25s;
}
.search-form button:hover { opacity: .85; }
.search-hot { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.search-hot span { font-size: 12px; color: var(--text2); }
.search-hot a {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 12px;
  background: rgba(232,51,109,.1);
  color: var(--rose);
  border: 1px solid rgba(232,51,109,.2);
  transition: all .25s;
}
.search-hot a:hover { background: var(--rose); color: #fff; }

/* =============================================
   面包屑
   ============================================= */
.breadcrumb {
  padding: 12px 5%;
  font-size: 13px;
  color: var(--text2);
  max-width: 1400px;
  margin: 0 auto;
}
.breadcrumb a { color: var(--text2); }
.breadcrumb a:hover { color: var(--rose); }
.breadcrumb span { margin: 0 6px; }

/* =============================================
   Hero Banner
   ============================================= */
.hero {
  position: relative;
  height: 580px;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(.55);
  transition: transform 8s ease;
}
.hero:hover .hero-bg { transform: scale(1.04); }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15,15,26,.9) 0%, rgba(15,15,26,.3) 60%, transparent 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 8%;
  max-width: 700px;
}
.hero-tag {
  display: inline-block;
  background: var(--grad);
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  font-weight: 600;
  letter-spacing: 1px;
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 16px;
}
.hero h1 em { font-style: normal; background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p {
  font-size: 16px;
  color: rgba(255,255,255,.8);
  margin-bottom: 28px;
  max-width: 480px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-hero {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 700;
  transition: all .25s;
}
.btn-hero-primary { background: var(--grad); color: #fff; box-shadow: 0 4px 20px rgba(232,51,109,.4); }
.btn-hero-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(232,51,109,.5); color: #fff; }
.btn-hero-outline { border: 2px solid rgba(255,255,255,.6); color: #fff; }
.btn-hero-outline:hover { background: rgba(255,255,255,.1); color: #fff; }
.hero-stats {
  position: absolute;
  bottom: 30px;
  right: 5%;
  display: flex;
  gap: 24px;
  z-index: 2;
}
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 24px; font-weight: 800; color: var(--rose); }
.hero-stat .label { font-size: 12px; color: rgba(255,255,255,.7); }

/* =============================================
   通用区块
   ============================================= */
.section { padding: 60px 5%; }
.section-inner { max-width: 1400px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 40px; }
.section-tag {
  display: inline-block;
  background: rgba(232,51,109,.12);
  color: var(--rose);
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  border: 1px solid rgba(232,51,109,.25);
  font-weight: 600;
  letter-spacing: 1px;
}
.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
}
.section h2 .highlight { background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.section-desc { color: var(--text2); font-size: 15px; max-width: 600px; margin: 0 auto; }
.section-left .section-header { text-align: left; }
.section-left .section-desc { margin: 0; }
.view-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--rose);
  font-size: 14px;
  font-weight: 600;
  margin-top: 8px;
  transition: gap .25s;
}
.view-more:hover { gap: 10px; color: var(--rose); }
.section-flex-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}

/* =============================================
   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(--card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform .3s, box-shadow .3s;
  cursor: pointer;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--dark3);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.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,.3);
  opacity: 0;
  transition: opacity .3s;
}
.video-card:hover .play-btn { opacity: 1; }
.play-icon {
  width: 54px;
  height: 54px;
  background: rgba(232,51,109,.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  transition: transform .25s;
}
.video-card:hover .play-icon { transform: scale(1.1); }
.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,.75);
  color: #fff;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--grad);
  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(--white);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text2);
}
.video-meta .author { display: flex; align-items: center; gap: 5px; }
.video-meta .author img { width: 20px; height: 20px; border-radius: 50%; object-fit: cover; }
.video-stats { display: flex; gap: 10px; }
.video-stats span { display: flex; align-items: center; gap: 3px; }
.video-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(232,51,109,.1);
  color: var(--rose);
  border: 1px solid rgba(232,51,109,.2);
}

/* =============================================
   特色模块卡片
   ============================================= */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all .3s;
  cursor: pointer;
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--rose); box-shadow: var(--shadow); }
.feature-icon {
  width: 56px;
  height: 56px;
  background: rgba(232,51,109,.12);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-size: 26px;
  transition: background .3s;
}
.feature-card:hover .feature-icon { background: rgba(232,51,109,.25); }
.feature-card h3 { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 6px; }
.feature-card p { font-size: 12px; color: var(--text2); line-height: 1.5; }

/* =============================================
   专家卡片
   ============================================= */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .3s;
}
.expert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.expert-avatar {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  object-position: top;
}
.expert-body { padding: 20px; }
.expert-name { font-size: 17px; font-weight: 800; color: var(--white); margin-bottom: 4px; }
.expert-role {
  font-size: 12px;
  color: var(--rose);
  margin-bottom: 10px;
  font-weight: 600;
}
.expert-desc { font-size: 13px; color: var(--text2); line-height: 1.6; margin-bottom: 14px; }
.expert-awards { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.award-tag {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 10px;
  background: rgba(255,215,0,.1);
  color: var(--gold);
  border: 1px solid rgba(255,215,0,.2);
}
.expert-actions { display: flex; gap: 8px; }
.btn-sm {
  flex: 1;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  transition: all .25s;
}
.btn-sm-primary { background: var(--grad); color: #fff; }
.btn-sm-primary:hover { opacity: .85; color: #fff; }
.btn-sm-outline { border: 1px solid var(--border); color: var(--text2); }
.btn-sm-outline:hover { border-color: var(--rose); color: var(--rose); }

/* =============================================
   合作品牌墙
   ============================================= */
.partner-wall {
  background: var(--dark2);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 20px;
  align-items: center;
}
.partner-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  transition: all .3s;
}
.partner-item:hover { border-color: var(--rose); transform: scale(1.05); }
.partner-item span { font-size: 13px; font-weight: 600; color: var(--text2); }

/* =============================================
   社区功能区
   ============================================= */
.community-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.community-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all .3s;
  position: relative;
  overflow: hidden;
}
.community-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad);
}
.community-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.community-card h3 { font-size: 18px; font-weight: 800; color: var(--white); margin-bottom: 10px; }
.community-card p { font-size: 14px; color: var(--text2); margin-bottom: 16px; }
.community-features { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.comm-feat {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--text2);
  background: var(--dark3);
  padding: 5px 10px;
  border-radius: 8px;
}

/* =============================================
   用户评价
   ============================================= */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: all .3s;
}
.review-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--grad);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.review-user { flex: 1; }
.review-name { font-size: 14px; font-weight: 700; color: var(--white); }
.review-date { font-size: 12px; color: var(--text2); }
.review-stars { color: var(--gold); font-size: 13px; margin-bottom: 10px; }
.review-text { font-size: 13px; color: var(--text2); line-height: 1.7; }
.review-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }

/* =============================================
   FAQ
   ============================================= */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .25s;
}
.faq-item.open { border-color: var(--rose); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  user-select: none;
}
.faq-q .icon {
  width: 24px;
  height: 24px;
  background: rgba(232,51,109,.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--rose);
  transition: transform .3s;
  flex-shrink: 0;
}
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .3s;
  padding: 0 22px;
  font-size: 14px;
  color: var(--text2);
  line-height: 1.8;
}
.faq-item.open .faq-a { max-height: 300px; padding: 0 22px 18px; }

/* =============================================
   联系我们
   ============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}
.contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.contact-card h3 { font-size: 18px; font-weight: 800; color: var(--white); margin-bottom: 20px; }
.contact-item { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 16px; }
.contact-icon {
  width: 36px;
  height: 36px;
  background: rgba(232,51,109,.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.contact-info .label { font-size: 12px; color: var(--text2); }
.contact-info .value { font-size: 14px; color: var(--white); font-weight: 600; }
.qr-row { display: flex; gap: 20px; margin-top: 20px; }
.qr-item { text-align: center; }
.qr-item img { width: 100px; height: 100px; border-radius: 8px; margin-bottom: 6px; }
.qr-item span { font-size: 12px; color: var(--text2); }

/* =============================================
   AI赋能区块
   ============================================= */
.ai-section {
  background: var(--dark2);
  position: relative;
  overflow: hidden;
}
.ai-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(232,51,109,.08) 0%, transparent 70%);
  pointer-events: none;
}
.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.ai-image { border-radius: var(--radius-lg); overflow: hidden; }
.ai-image img { width: 100%; height: 100%; object-fit: cover; }
.ai-features { display: flex; flex-direction: column; gap: 16px; margin-top: 24px; }
.ai-feat {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: border-color .25s;
}
.ai-feat:hover { border-color: var(--rose); }
.ai-feat-icon {
  width: 40px;
  height: 40px;
  background: rgba(232,51,109,.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.ai-feat-body h4 { font-size: 14px; font-weight: 700; color: var(--white); margin-bottom: 4px; }
.ai-feat-body p { font-size: 12px; color: var(--text2); }

/* =============================================
   How-To 加入社区
   ============================================= */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.howto-steps::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--rose), var(--coral));
  z-index: 0;
}
.step-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 18px;
  text-align: center;
  position: relative;
  z-index: 1;
  transition: all .3s;
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.step-num {
  width: 48px;
  height: 48px;
  background: var(--grad);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 14px;
}
.step-card h4 { font-size: 14px; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.step-card p { font-size: 12px; color: var(--text2); line-height: 1.6; }

/* =============================================
   统计数字区
   ============================================= */
.stats-section {
  background: var(--grad);
  padding: 50px 5%;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}
.stat-item .num { font-size: 2.5rem; font-weight: 900; color: #fff; }
.stat-item .unit { font-size: 1rem; font-weight: 600; color: rgba(255,255,255,.8); }
.stat-item .label { font-size: 13px; color: rgba(255,255,255,.75); margin-top: 4px; }

/* =============================================
   社交分享
   ============================================= */
.share-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  transition: all .25s;
  cursor: pointer;
  border: none;
}
.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: .85; transform: translateY(-2px); }

/* =============================================
   页脚
   ============================================= */
footer {
  background: var(--dark2);
  border-top: 1px solid var(--border);
  padding: 50px 5% 20px;
}
.footer-inner { max-width: 1400px; margin: 0 auto; }
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-brand .logo img { height: 36px; }
.footer-brand .logo span { font-size: 20px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.footer-brand p { font-size: 13px; color: var(--text2); line-height: 1.8; margin-bottom: 16px; }
.footer-col h4 { font-size: 14px; font-weight: 700; color: var(--white); margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 13px; color: var(--text2); transition: color .25s; }
.footer-col ul li a:hover { color: var(--rose); }
.footer-qr { display: flex; gap: 16px; }
.footer-qr-item { text-align: center; }
.footer-qr-item img { width: 80px; height: 80px; border-radius: 6px; margin-bottom: 6px; }
.footer-qr-item span { font-size: 11px; color: var(--text2); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 12px; color: var(--text2); }
.footer-links { display: flex; gap: 16px; }
.footer-links a { font-size: 12px; color: var(--text2); transition: color .25s; }
.footer-links a:hover { color: var(--rose); }
.update-time { font-size: 12px; color: var(--text2); }

/* =============================================
   辅助工具类
   ============================================= */
.bg-dark2 { background: var(--dark2); }
.bg-dark3 { background: var(--dark3); }
.text-rose { color: var(--rose); }
.text-white { color: var(--white); }
.text-muted { color: var(--text2); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.divider { height: 1px; background: var(--border); margin: 40px 0; }
.badge-new { background: #ff4757; color: #fff; font-size: 10px; padding: 1px 6px; border-radius: 4px; font-weight: 700; margin-left: 4px; vertical-align: middle; }
.badge-hot { background: #ff6b35; color: #fff; font-size: 10px; padding: 1px 6px; border-radius: 4px; font-weight: 700; margin-left: 4px; vertical-align: middle; }

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1200px) {
  .video-grid-4 { grid-template-columns: repeat(3, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr 1fr; }
}
@media (max-width: 900px) {
  .video-grid-4, .video-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .howto-steps { grid-template-columns: repeat(2, 1fr); }
  .howto-steps::before { display: none; }
  .ai-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .hero { height: 440px; }
  .hero-stats { display: none; }
}
@media (max-width: 768px) {
  .nav-menu, .nav-actions { display: none; }
  .hamburger { display: flex; }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px;
    left: 0; right: 0;
    background: rgba(15,15,26,.98);
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    z-index: 999;
  }
  .search-hot { display: none; }
  .video-grid-4, .video-grid-3, .video-grid { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
  .hero { height: 360px; }
  .hero h1 { font-size: 1.8rem; }
  .footer-top { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .video-grid, .video-grid-4, .video-grid-3 { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { height: 300px; }
  .hero h1 { font-size: 1.5rem; }
  .hero p { font-size: 13px; }
  .section { padding: 40px 4%; }
}

/* =============================================
   动画
   ============================================= */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeInUp .6s ease both; }
.fade-in-1 { animation-delay: .1s; }
.fade-in-2 { animation-delay: .2s; }
.fade-in-3 { animation-delay: .3s; }
.fade-in-4 { animation-delay: .4s; }

/* 直播标识 */
.live-dot {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255,71,87,.15);
  color: #ff4757;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 10px;
  font-weight: 700;
}
.live-dot::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #ff4757;
  border-radius: 50%;
  animation: pulse 1.2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.8); }
}

/* 弹幕效果 */
.danmu-wrap {
  position: relative;
  overflow: hidden;
  background: var(--dark3);
  border-radius: 8px;
  height: 36px;
  margin-top: 8px;
}
.danmu-track {
  display: flex;
  gap: 40px;
  white-space: nowrap;
  animation: danmu 20s linear infinite;
  padding: 8px 0;
}
.danmu-track span { font-size: 13px; color: var(--text2); }
@keyframes danmu {
  from { transform: translateX(100%); }
  to { transform: translateX(-100%); }
}

/* =============================================
   补充样式 - 新增组件
   ============================================= */

/* 无障碍隐藏 */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* 媒体标签页 */
.media-tabs {
  display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px;
}
.tab-btn {
  padding: 8px 18px; border-radius: 20px; border: 1px solid var(--border);
  background: var(--card); color: var(--text2); cursor: pointer;
  font-size: 13px; transition: all .25s;
}
.tab-btn.active, .tab-btn:hover {
  background: var(--grad); color: #fff; border-color: transparent;
}
.tab-content { display: none; }
.tab-content.active { display: block; }

/* 娱乐专区Banner */
.entertainment-banner img { object-fit: cover; }

/* TikTok徽章 */
.badge-tiktok { background: linear-gradient(135deg,#010101,#69C9D0) !important; }

/* 社区功能卡片 */
.community-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.community-feat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all .3s;
  display: block;
  color: var(--text);
}
.community-feat-card:hover {
  border-color: var(--rose);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.community-feat-card h3 {
  font-size: 15px; font-weight: 700; color: var(--white);
  margin: 10px 0 8px;
}
.community-feat-card p { font-size: 13px; color: var(--text2); line-height: 1.6; }
.feat-icon { font-size: 2rem; margin-bottom: 4px; }
.feat-stat {
  display: inline-flex; align-items: center; gap: 5px;
  margin-top: 10px; font-size: 12px; color: var(--text2);
  background: rgba(232,51,109,.1); padding: 3px 10px; border-radius: 10px;
}
.dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.dot.live { background: #00e676; box-shadow: 0 0 6px #00e676; animation: pulse 1.5s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }

/* 直播网格 */
.live-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.live-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .3s;
}
.live-card:hover { border-color: var(--rose); transform: translateY(-3px); }
.live-badge {
  position: absolute; top: 8px; left: 8px;
  background: rgba(255,0,0,.85); color: #fff;
  font-size: 11px; padding: 2px 8px; border-radius: 4px;
  display: flex; align-items: center; gap: 4px;
}
.live-viewers {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(0,0,0,.65); color: #fff;
  font-size: 11px; padding: 2px 8px; border-radius: 4px;
}

/* AI功能卡片 */
.ai-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.ai-feat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  transition: all .3s;
}
.ai-feat-card:hover { border-color: var(--rose); transform: translateY(-4px); box-shadow: var(--shadow); }
.ai-icon { font-size: 2.2rem; margin-bottom: 12px; }
.ai-feat-card h3 { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.ai-feat-card p { font-size: 13px; color: var(--text2); line-height: 1.7; margin-bottom: 14px; }
.ai-link { font-size: 12px; color: var(--rose); font-weight: 600; }
.ai-link:hover { text-decoration: underline; }

/* 原创声明 */
.original-declaration {
  background: linear-gradient(135deg, rgba(232,51,109,.12), rgba(123,47,190,.12));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  display: flex;
  align-items: flex-start;
  gap: 24px;
}
.decl-icon { font-size: 3rem; flex-shrink: 0; }
.decl-title { font-size: 1.3rem; font-weight: 800; color: var(--white); margin-bottom: 12px; }
.decl-content p { font-size: 14px; color: var(--text2); line-height: 1.8; margin-bottom: 16px; }
.decl-badges { display: flex; gap: 10px; flex-wrap: wrap; }
.decl-badge {
  background: rgba(232,51,109,.15); color: var(--rose);
  border: 1px solid rgba(232,51,109,.3);
  padding: 4px 14px; border-radius: 20px; font-size: 12px; font-weight: 600;
}

/* 合作伙伴 */
.partner-wall { overflow: hidden; }
.partner-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 12px;
}
.partner-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 8px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text2);
  transition: all .3s;
}
.partner-item:hover { border-color: var(--rose); color: var(--rose); }

/* 加入指南步骤 */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.step-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: all .3s;
}
.step-card:hover { border-color: var(--rose); transform: translateY(-4px); box-shadow: var(--shadow); }
.step-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--grad); color: #fff;
  font-size: 1.3rem; font-weight: 900;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.step-card h4 { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.step-card p { font-size: 13px; color: var(--text2); line-height: 1.7; }

/* 用户评价 */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.review-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all .3s;
}
.review-card:hover { border-color: var(--rose); transform: translateY(-3px); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.1rem; font-weight: 700; flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 700; color: var(--white); }
.review-date { font-size: 11px; color: var(--text2); margin-top: 2px; }
.review-stars { color: #FFD700; font-size: 14px; margin-bottom: 10px; }
.review-text { font-size: 13px; color: var(--text2); line-height: 1.8; margin-bottom: 12px; }
.review-tags { display: flex; gap: 6px; flex-wrap: wrap; }

/* 底部法律信息 */
.footer-legal {
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: 20px;
  margin-top: 20px;
}
.footer-legal-inner { text-align: center; }
.footer-copyright { font-size: 13px; color: #666; margin-bottom: 6px; }
.footer-icp { font-size: 12px; color: #555; margin-bottom: 10px; }
.footer-links { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-bottom: 8px; }
.footer-links a { font-size: 12px; color: #666; }
.footer-links a:hover { color: var(--rose); }
.update-time { font-size: 12px; color: #555; }

/* 底部认证徽章 */
.cert-badge {
  background: rgba(232,51,109,.1);
  color: var(--rose);
  border: 1px solid rgba(232,51,109,.25);
  padding: 3px 10px; border-radius: 10px; font-size: 11px;
}

/* 专家按钮 */
.btn-sm {
  padding: 6px 14px; border-radius: 8px; font-size: 12px;
  font-weight: 600; cursor: pointer; transition: all .25s;
}
.btn-sm-primary {
  background: var(--grad); color: #fff; border: none;
}
.btn-sm-outline {
  background: transparent; color: var(--rose);
  border: 1px solid var(--rose);
}
.btn-sm:hover { opacity: .85; transform: translateY(-1px); }

/* 响应式补充 */
@media (max-width: 1100px) {
  .community-features-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-features { grid-template-columns: repeat(2, 1fr); }
  .live-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(4, 1fr); }
  .howto-steps { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .community-features-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-features { grid-template-columns: 1fr; }
  .live-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
  .howto-steps { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .original-declaration { flex-direction: column; padding: 24px 20px; }
  .decl-icon { font-size: 2rem; }
}
@media (max-width: 480px) {
  .community-features-grid { grid-template-columns: 1fr; }
  .live-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
}