/* =============================================
   糖心vlog - 主样式文件
   Brand: 糖心vlog | Domain: nxhtehfc.cn
   ============================================= */

/* ---- CSS变量 / 原创配色方案 ---- */
:root {
  --primary: #E8336D;
  --primary-dark: #C4215A;
  --primary-light: #FF6B9D;
  --secondary: #FF8C42;
  --accent: #7B2FBE;
  --accent-light: #A855F7;
  --bg-dark: #0D0D1A;
  --bg-card: #16162A;
  --bg-card2: #1E1E35;
  --text-main: #F0F0F8;
  --text-muted: #9090B0;
  --text-light: #C8C8E0;
  --border: rgba(232,51,109,0.2);
  --gradient-main: linear-gradient(135deg, #E8336D 0%, #FF8C42 100%);
  --gradient-dark: linear-gradient(135deg, #0D0D1A 0%, #1a0a2e 100%);
  --gradient-card: linear-gradient(135deg, #16162A 0%, #1E1E35 100%);
  --shadow-pink: 0 4px 20px rgba(232,51,109,0.3);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- 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: var(--bg-dark);
  color: var(--text-main);
  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, ol { list-style: none; }

/* ---- 滚动条美化 ---- */
::-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: var(--gradient-main);
  color: #fff;
  text-align: center;
  padding: 8px 20px;
  font-size: 13px;
  letter-spacing: 0.5px;
}
.top-bar a { color: #fff; text-decoration: underline; }

/* =============================================
   导航栏
   ============================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,13,26,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 24px;
  height: 68px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.site-logo img.logo-img {
  height: 42px;
  width: auto;
  object-fit: contain;
}
.site-logo .logo-text {
  font-size: 22px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.main-nav a {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  white-space: nowrap;
  transition: var(--transition);
}
.main-nav a:hover,
.main-nav a.active {
  color: #fff;
  background: rgba(232,51,109,0.15);
}
.main-nav a.active { color: var(--primary-light); }

/* 搜索框 */
.header-search {
  display: flex;
  align-items: center;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 6px 16px;
  gap: 8px;
  min-width: 220px;
  transition: var(--transition);
}
.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232,51,109,0.15);
}
.header-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 14px;
  width: 100%;
}
.header-search input::placeholder { color: var(--text-muted); }
.header-search button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 0;
  display: flex;
  align-items: center;
  transition: var(--transition);
}
.header-search button:hover { color: var(--primary); }
.header-search button svg { width: 16px; height: 16px; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.btn-login {
  padding: 7px 18px;
  border: 1px solid var(--primary);
  border-radius: 20px;
  font-size: 13px;
  color: var(--primary);
  transition: var(--transition);
}
.btn-login:hover { background: var(--primary); color: #fff; }
.btn-join {
  padding: 7px 18px;
  background: var(--gradient-main);
  border-radius: 20px;
  font-size: 13px;
  color: #fff;
  font-weight: 600;
  box-shadow: var(--shadow-pink);
  transition: var(--transition);
}
.btn-join:hover { transform: translateY(-1px); box-shadow: 0 6px 24px rgba(232,51,109,0.4); }

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

/* =============================================
   搜索栏（导航下方）
   ============================================= */
.search-bar-section {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 14px 20px;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
}
.search-bar-main {
  flex: 1;
  display: flex;
  align-items: center;
  background: var(--bg-card2);
  border: 1.5px solid var(--border);
  border-radius: 30px;
  padding: 10px 20px;
  gap: 10px;
  transition: var(--transition);
}
.search-bar-main:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(232,51,109,0.12);
}
.search-bar-main input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 15px;
}
.search-bar-main input::placeholder { color: var(--text-muted); }
.search-bar-main .search-icon { color: var(--text-muted); }
.search-btn-main {
  padding: 10px 28px;
  background: var(--gradient-main);
  border: none;
  border-radius: 24px;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-pink);
}
.search-btn-main:hover { transform: translateY(-1px); }
.search-hot-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.search-hot-tags span { font-size: 12px; color: var(--text-muted); }
.hot-tag {
  font-size: 12px;
  padding: 3px 10px;
  background: rgba(232,51,109,0.1);
  border: 1px solid rgba(232,51,109,0.2);
  border-radius: 12px;
  color: var(--primary-light);
  cursor: pointer;
  transition: var(--transition);
}
.hot-tag:hover { background: rgba(232,51,109,0.2); }

/* =============================================
   面包屑
   ============================================= */
.breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb .sep { color: var(--text-muted); }
.breadcrumb .current { color: var(--text-light); }

/* =============================================
   Hero 区域
   ============================================= */
.hero-section {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--gradient-dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero_banner.jpg');
  background-size: cover;
  background-position: center top;
  opacity: 0.25;
  filter: blur(2px);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(13,13,26,0.95) 40%, rgba(13,13,26,0.3) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 20px;
  width: 100%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(232,51,109,0.15);
  border: 1px solid rgba(232,51,109,0.3);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 13px;
  color: var(--primary-light);
  margin-bottom: 20px;
}
.hero-badge .dot {
  width: 7px; height: 7px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
.hero-title {
  font-size: clamp(32px, 5vw, 58px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -1px;
}
.hero-title .brand { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--text-light);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--gradient-main);
  border-radius: 30px;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  box-shadow: var(--shadow-pink);
  transition: var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(232,51,109,0.5); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border: 1.5px solid rgba(255,255,255,0.2);
  border-radius: 30px;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  backdrop-filter: blur(4px);
  transition: var(--transition);
}
.btn-secondary:hover { border-color: var(--primary); background: rgba(232,51,109,0.1); }
.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; }

/* =============================================
   通用区块
   ============================================= */
.section {
  padding: 64px 20px;
}
.section-inner {
  max-width: 1280px;
  margin: 0 auto;
}
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
  gap: 16px;
}
.section-title-wrap { display: flex; flex-direction: column; gap: 6px; }
.section-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
}
.section-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
}
.section-title .brand { color: var(--primary-light); }
.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  margin-top: 8px;
  max-width: 600px;
}
.view-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--primary-light);
  white-space: nowrap;
  padding: 8px 16px;
  border: 1px solid rgba(232,51,109,0.3);
  border-radius: 20px;
  transition: var(--transition);
}
.view-all:hover { background: rgba(232,51,109,0.1); }
.section-bg-alt { background: var(--bg-card); }

/* =============================================
   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-card);
  border-color: rgba(232,51,109,0.4);
}
.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(1.06); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: var(--transition);
  opacity: 0;
}
.video-card:hover .video-play-btn { opacity: 1; background: rgba(0,0,0,0.35); }
.play-circle {
  width: 56px; height: 56px;
  background: rgba(232,51,109,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(232,51,109,0.5);
}
.video-card:hover .play-circle { transform: scale(1); }
.play-circle 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: 12px;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-quality {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-info {
  padding: 14px;
}
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  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(--primary-light); }
.video-stats {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
}
.video-stats span { display: flex; align-items: center; gap: 4px; }

/* =============================================
   分类导航 Tabs
   ============================================= */
.category-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.cat-tab {
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: transparent;
  transition: var(--transition);
}
.cat-tab:hover, .cat-tab.active {
  background: rgba(232,51,109,0.15);
  border-color: var(--primary);
  color: var(--primary-light);
}

/* =============================================
   功能模块卡片
   ============================================= */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-pink);
}
.feature-icon {
  width: 60px; height: 60px;
  background: rgba(232,51,109,0.1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 28px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon { background: rgba(232,51,109,0.2); transform: scale(1.1); }
.feature-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}
.feature-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* =============================================
   专家展示
   ============================================= */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); border-color: rgba(232,51,109,0.4); }
.expert-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  margin: 0 auto 14px;
  object-fit: cover;
  border: 3px solid var(--primary);
  box-shadow: 0 0 0 4px rgba(232,51,109,0.15);
}
.expert-name { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.expert-title { font-size: 13px; color: var(--primary-light); margin-bottom: 10px; }
.expert-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; 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(123,47,190,0.15);
  border: 1px solid rgba(123,47,190,0.3);
  border-radius: 10px;
  color: var(--accent-light);
}
.expert-actions { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 6px 14px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-sm-primary { background: var(--gradient-main); color: #fff; }
.btn-sm-outline { background: transparent; border: 1px solid var(--border); color: var(--text-light); }
.btn-sm-outline:hover { border-color: var(--primary); color: var(--primary-light); }

/* =============================================
   合作品牌 Logo墙
   ============================================= */
.partner-wall {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}
.partner-logo {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 28px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition);
  text-align: center;
  min-width: 120px;
}
.partner-logo:hover { border-color: var(--primary); color: var(--primary-light); background: rgba(232,51,109,0.05); }

/* =============================================
   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-lg);
  padding: 24px;
  transition: var(--transition);
}
.review-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.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 .name { font-size: 15px; font-weight: 600; }
.review-user .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-light); line-height: 1.7; }
.review-tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 11px;
  padding: 3px 10px;
  background: rgba(232,51,109,0.1);
  border-radius: 10px;
  color: var(--primary-light);
}

/* =============================================
   FAQ
   ============================================= */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(232,51,109,0.4); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  gap: 12px;
  user-select: none;
}
.faq-question:hover { color: var(--primary-light); }
.faq-icon {
  width: 24px; height: 24px;
  background: rgba(232,51,109,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
  color: var(--primary);
  transition: var(--transition);
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: rgba(232,51,109,0.2); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 22px 18px; }

/* =============================================
   社区互动区
   ============================================= */
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.community-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}
.community-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); }
.community-card .icon { font-size: 32px; margin-bottom: 12px; }
.community-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.community-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.community-card .count { font-size: 22px; font-weight: 800; color: var(--primary-light); margin-top: 12px; }

/* =============================================
   联系/二维码区
   ============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.contact-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: var(--transition);
}
.contact-card:hover { border-color: var(--primary); box-shadow: var(--shadow-pink); }
.contact-card .qr-img {
  width: 140px; height: 140px;
  object-fit: cover;
  border-radius: 12px;
  margin: 0 auto 16px;
  border: 2px solid var(--border);
}
.contact-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.contact-card p { font-size: 13px; color: var(--text-muted); }
.contact-info-list { display: flex; flex-direction: column; gap: 14px; }
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  background: var(--bg-card2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.contact-info-item .ci-icon {
  width: 42px; height: 42px;
  background: rgba(232,51,109,0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.contact-info-item .ci-label { font-size: 12px; color: var(--text-muted); margin-bottom: 3px; }
.contact-info-item .ci-value { font-size: 14px; font-weight: 600; color: var(--text-main); }

/* =============================================
   社交分享
   ============================================= */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.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 { transform: translateY(-2px); filter: brightness(1.1); }

/* =============================================
   How-To 加入指南
   ============================================= */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  counter-reset: step;
}
.howto-step {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  position: relative;
  transition: var(--transition);
}
.howto-step:hover { transform: translateY(-3px); border-color: var(--primary); }
.howto-step::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 36px;
  font-weight: 900;
  color: rgba(232,51,109,0.1);
  line-height: 1;
}
.howto-step .step-icon { font-size: 32px; margin-bottom: 14px; }
.howto-step h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.howto-step p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* =============================================
   页脚
   ============================================= */
.site-footer {
  background: #080812;
  border-top: 1px solid var(--border);
  padding: 60px 20px 0;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}
.footer-brand .logo-wrap { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .logo-wrap img { height: 36px; }
.footer-brand .logo-wrap span { font-size: 20px; font-weight: 800; background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.8; max-width: 280px; }
.footer-social { display: flex; gap: 10px; margin-top: 20px; }
.social-icon {
  width: 36px; height: 36px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition);
  cursor: pointer;
}
.social-icon:hover { background: rgba(232,51,109,0.15); border-color: var(--primary); }
.footer-col h4 { font-size: 15px; font-weight: 700; margin-bottom: 16px; color: var(--text-main); }
.footer-col ul { display: flex; flex-direction: column; gap: 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); padding-left: 4px; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }
.footer-qr-row {
  display: flex;
  gap: 24px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  align-items: center;
}
.footer-qr-item { text-align: center; }
.footer-qr-item img {
  width: 90px; height: 90px;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 8px;
}
.footer-qr-item p { font-size: 12px; color: var(--text-muted); }

/* =============================================
   内页 Banner
   ============================================= */
.page-banner {
  background: var(--gradient-dark);
  padding: 48px 20px;
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.page-banner h1 {
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 900;
  margin-bottom: 10px;
}
.page-banner h1 .brand { color: var(--primary-light); }
.page-banner p { font-size: 15px; color: var(--text-muted); max-width: 560px; margin: 0 auto; }

/* =============================================
   直播卡片
   ============================================= */
.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #E6162D;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}
.live-badge .live-dot {
  width: 6px; height: 6px;
  background: #fff;
  border-radius: 50%;
  animation: pulse 1s infinite;
}

/* =============================================
   AI 功能卡片
   ============================================= */
.ai-card {
  background: linear-gradient(135deg, #1a0a2e 0%, #16162A 100%);
  border: 1px solid rgba(123,47,190,0.3);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}
.ai-card:hover { border-color: var(--accent-light); box-shadow: 0 8px 32px rgba(123,47,190,0.2); }
.ai-card .ai-icon { font-size: 36px; margin-bottom: 14px; }
.ai-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.ai-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }
.ai-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }

/* =============================================
   统计数字条
   ============================================= */
.stats-bar {
  background: var(--gradient-main);
  padding: 32px 20px;
}
.stats-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item .num { font-size: 36px; font-weight: 900; color: #fff; }
.stat-item .label { font-size: 13px; color: rgba(255,255,255,0.8); margin-top: 4px; }

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1024px) {
  .video-grid-4 { grid-template-columns: repeat(3, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .stats-bar-inner { grid-template-columns: repeat(2, 1fr); }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open { display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: rgba(13,13,26,0.98); padding: 16px; border-bottom: 1px solid var(--border); z-index: 999; }
  .nav-toggle { display: flex; }
  .header-search { display: none; }
  .video-grid-4, .video-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .stats-bar-inner { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 40px 16px; }
}

@media (max-width: 480px) {
  .video-grid-4, .video-grid-3, .video-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .stats-bar-inner { grid-template-columns: repeat(2, 1fr); }
  .howto-steps { grid-template-columns: 1fr; }
}

/* =============================================
   动画
   ============================================= */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp 0.6s ease forwards; }

/* 懒加载占位 */
.lazy-placeholder {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card2) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* 标签 */
.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}
.tag-pink { background: rgba(232,51,109,0.15); color: var(--primary-light); border: 1px solid rgba(232,51,109,0.2); }
.tag-purple { background: rgba(123,47,190,0.15); color: var(--accent-light); border: 1px solid rgba(123,47,190,0.2); }
.tag-orange { background: rgba(255,140,66,0.15); color: var(--secondary); border: 1px solid rgba(255,140,66,0.2); }

/* 分页 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}
.page-btn {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--bg-card);
  transition: var(--transition);
}
.page-btn:hover, .page-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* =============================================
   EEAT 信任声明栏（百度EEAT权威性信号）
   ============================================= */
.eeat-bar {
  background: linear-gradient(135deg, #0d1a2e 0%, #1a0d2e 100%);
  border-top: 1px solid rgba(123,47,190,0.3);
  border-bottom: 1px solid rgba(123,47,190,0.3);
  padding: 28px 20px;
}
.eeat-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.eeat-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.eeat-icon {
  font-size: 28px;
  flex-shrink: 0;
  margin-top: 2px;
}
.eeat-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}
.eeat-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* =============================================
   资质认证展示（EEAT权威性）
   ============================================= */
.footer-cert {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}
.cert-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 14px;
}
.cert-icon { font-size: 14px; }

/* =============================================
   返回顶部按钮
   ============================================= */
#back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--gradient-main);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-pink);
  z-index: 999;
}
#back-to-top.visible { opacity: 1; pointer-events: auto; }
#back-to-top:hover { transform: translateY(-3px); }

/* =============================================
   视频详情页
   ============================================= */
.video-detail-wrap {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 20px;
}
.video-player-box {
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/9;
  position: relative;
  cursor: pointer;
}
.video-player-box .player-poster {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.video-player-box .player-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.4);
  transition: var(--transition);
}
.video-player-box:hover .player-btn { background: rgba(0,0,0,0.55); }
.player-btn .play-big {
  width: 72px; height: 72px;
  background: rgba(232,51,109,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 24px rgba(232,51,109,0.5);
  transition: var(--transition);
}
.video-player-box:hover .play-big { transform: scale(1.1); }
.play-big svg { width: 30px; height: 30px; fill: #fff; margin-left: 4px; }
.video-detail-info { padding: 24px 0; }
.video-detail-title { font-size: 22px; font-weight: 800; line-height: 1.4; margin-bottom: 12px; }
.video-detail-meta { display: flex; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.video-detail-meta .author { color: var(--primary-light); font-weight: 600; }
.video-detail-desc { font-size: 14px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.video-detail-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.video-sidebar { display: flex; flex-direction: column; gap: 16px; }
.sidebar-title { font-size: 16px; font-weight: 700; margin-bottom: 12px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.sidebar-video-item {
  display: flex;
  gap: 12px;
  cursor: pointer;
  padding: 10px;
  border-radius: var(--radius);
  transition: var(--transition);
}
.sidebar-video-item:hover { background: var(--bg-card2); }
.sidebar-thumb {
  width: 100px;
  height: 60px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}
.sidebar-thumb img { width: 100%; height: 100%; object-fit: cover; }
.sidebar-thumb .play-sm {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: var(--transition);
}
.sidebar-video-item:hover .play-sm { background: rgba(0,0,0,0.4); }
.play-sm svg { width: 18px; height: 18px; fill: #fff; opacity: 0; transition: var(--transition); }
.sidebar-video-item:hover .play-sm svg { opacity: 1; }
.sidebar-info .title { font-size: 13px; font-weight: 600; line-height: 1.4; margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sidebar-info .meta { font-size: 11px; color: var(--text-muted); }

/* =============================================
   搜索结果页
   ============================================= */
.search-result-header {
  padding: 24px 20px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.search-result-header h1 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.search-result-header p { font-size: 14px; color: var(--text-muted); }
.search-result-grid { display: flex; flex-direction: column; gap: 20px; }
.search-result-item {
  display: flex;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: var(--transition);
}
.search-result-item:hover { border-color: var(--primary); box-shadow: var(--shadow-card); }
.search-result-thumb {
  width: 180px;
  height: 108px;
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}
.search-result-thumb img { width: 100%; height: 100%; object-fit: cover; }
.search-result-thumb .play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: var(--transition);
}
.search-result-item:hover .play-overlay { background: rgba(0,0,0,0.4); }
.search-result-item:hover .play-overlay svg { opacity: 1; }
.play-overlay svg { width: 28px; height: 28px; fill: #fff; opacity: 0; transition: var(--transition); }
.search-result-info { flex: 1; }
.search-result-info h2 { font-size: 16px; font-weight: 700; margin-bottom: 8px; line-height: 1.5; }
.search-result-info h2 em { color: var(--primary-light); font-style: normal; }
.search-result-info .desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.search-result-info .meta { display: flex; gap: 12px; font-size: 12px; color: var(--text-muted); flex-wrap: wrap; }
.search-result-info .meta .author { color: var(--primary-light); }

/* =============================================
   法律页面（隐私/协议/版权）
   ============================================= */
.legal-wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}
.legal-wrap h1 { font-size: 28px; font-weight: 800; margin-bottom: 8px; }
.legal-wrap .legal-meta { font-size: 13px; color: var(--text-muted); margin-bottom: 32px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.legal-wrap h2 { font-size: 18px; font-weight: 700; margin: 28px 0 12px; color: var(--primary-light); }
.legal-wrap h3 { font-size: 15px; font-weight: 700; margin: 20px 0 8px; }
.legal-wrap p { font-size: 14px; color: var(--text-muted); line-height: 1.9; margin-bottom: 12px; }
.legal-wrap ul { padding-left: 20px; margin-bottom: 12px; }
.legal-wrap ul li { font-size: 14px; color: var(--text-muted); line-height: 1.8; list-style: disc; }

/* =============================================
   EEAT 编辑标准声明（about页）
   ============================================= */
.editorial-box {
  background: linear-gradient(135deg, #0d1a2e 0%, #1a0d2e 100%);
  border: 1px solid rgba(123,47,190,0.3);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-top: 40px;
}
.editorial-box h2 { font-size: 20px; font-weight: 800; margin-bottom: 16px; color: var(--primary-light); }
.editorial-box p { font-size: 14px; color: var(--text-muted); line-height: 1.9; margin-bottom: 12px; }
.editorial-steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-top: 20px; }
.editorial-step {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(123,47,190,0.2);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
}
.editorial-step .num { font-size: 28px; font-weight: 900; color: var(--accent-light); margin-bottom: 6px; }
.editorial-step .label { font-size: 13px; color: var(--text-light); font-weight: 600; }
.editorial-step .desc { font-size: 12px; color: var(--text-muted); margin-top: 4px; line-height: 1.5; }

/* =============================================
   响应式补充
   ============================================= */
@media (max-width: 1024px) {
  .eeat-bar-inner { grid-template-columns: repeat(2, 1fr); }
  .video-detail-wrap { grid-template-columns: 1fr; }
  .video-sidebar { display: grid; grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .eeat-bar-inner { grid-template-columns: 1fr; gap: 16px; }
  .footer-cert { gap: 10px; }
  .search-result-item { flex-direction: column; }
  .search-result-thumb { width: 100%; height: 180px; }
  .video-sidebar { grid-template-columns: 1fr; }
}