/* =====================================================
   糖心vlog - 主样式文件
   主题：深紫金·仙逆风格
   域名：tietonghotel.cn
   ===================================================== */

/* ---- CSS变量 ---- */
:root {
  --primary:     #2d1b69;   /* 深紫 */
  --primary-light: #4a2fa0;
  --accent:      #c8922a;   /* 金色 */
  --accent-light: #e8b84b;
  --pink:        #e85d8a;   /* 玫粉 */
  --bg-dark:     #0f0a1e;   /* 极深背景 */
  --bg-card:     #1a1035;   /* 卡片背景 */
  --bg-section:  #150d2e;
  --text-main:   #f0e8ff;
  --text-muted:  #a89cc8;
  --text-dark:   #6b5a9a;
  --border:      rgba(200,146,42,0.25);
  --shadow:      0 8px 32px rgba(45,27,105,0.5);
  --radius:      12px;
  --radius-sm:   6px;
  --transition:  0.3s ease;
}

/* ---- 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: var(--accent-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--pink); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; outline: none; }

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

/* =====================================================
   顶部公告栏
   ===================================================== */
.top-bar {
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 50%, var(--primary) 100%);
  padding: 6px 0;
  font-size: 13px;
  color: var(--accent-light);
  overflow: hidden;
  position: relative;
}
.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}
.top-bar-scroll {
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
}
.top-bar-scroll span {
  display: inline-block;
  animation: marquee 30s linear infinite;
}
@keyframes marquee {
  0%   { transform: translateX(100%); }
  100% { transform: translateX(-100%); }
}
.top-bar-links a {
  color: var(--accent-light);
  margin-left: 16px;
  font-size: 12px;
}
.top-bar-links a:hover { color: #fff; }

/* =====================================================
   导航栏
   ===================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,10,30,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  height: 64px;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-logo img.logo-img {
  height: 40px;
  width: auto;
  border-radius: 6px;
}
.nav-logo img.favicon-img {
  height: 28px;
  width: 28px;
  border-radius: 4px;
}
.nav-logo-text {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 50%, var(--pink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.nav-menu a {
  color: var(--text-muted);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-menu a:hover,
.nav-menu a.active {
  color: var(--accent-light);
  background: rgba(200,146,42,0.12);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.btn-nav-login {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  transition: all var(--transition);
}
.btn-nav-login:hover {
  background: var(--accent);
  color: var(--bg-dark);
}
.btn-nav-join {
  background: linear-gradient(135deg, var(--pink), var(--primary-light));
  color: #fff;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  transition: all var(--transition);
}
.btn-nav-join:hover { opacity: 0.85; transform: translateY(-1px); }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}
.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition);
}

/* =====================================================
   搜索框
   ===================================================== */
.search-bar-wrap {
  background: var(--bg-section);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-form {
  display: flex;
  flex: 1;
  max-width: 640px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.search-form:focus-within { border-color: var(--accent); }
.search-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  padding: 8px 16px;
  color: var(--text-main);
  font-size: 14px;
}
.search-input::placeholder { color: var(--text-dark); }
.search-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--bg-dark);
  border: none;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition);
}
.search-btn:hover { opacity: 0.85; }
.search-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.search-tag {
  background: rgba(200,146,42,0.1);
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition);
}
.search-tag:hover {
  background: rgba(200,146,42,0.25);
  color: var(--accent-light);
}

/* =====================================================
   面包屑
   ===================================================== */
.breadcrumb-wrap {
  background: var(--bg-section);
  padding: 8px 0;
  border-bottom: 1px solid rgba(200,146,42,0.1);
}
.breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-dark);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb .sep { color: var(--text-dark); }
.breadcrumb .current { color: var(--accent-light); }

/* =====================================================
   通用容器
   ===================================================== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}
.section { padding: 60px 0; }
.section-alt { background: var(--bg-section); }
.section-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 60%, var(--pink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 40px;
}
.section-header-line {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--pink));
  margin: 12px auto 40px;
  border-radius: 2px;
}

/* =====================================================
   Hero 轮播区
   ===================================================== */
.hero-section {
  position: relative;
  height: clamp(360px, 55vw, 580px);
  overflow: hidden;
}
.hero-slides { position: relative; width: 100%; height: 100%; }
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.hero-slide.active { opacity: 1; }
.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(15,10,30,0.85) 0%,
    rgba(45,27,105,0.5) 50%,
    rgba(15,10,30,0.3) 100%
  );
}
.hero-content {
  position: absolute;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1280px;
  padding: 0 20px;
}
.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--pink), var(--primary-light));
  color: #fff;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 12px;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.hero-title {
  font-size: clamp(26px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.8);
}
.hero-title span { color: var(--accent-light); }
.hero-desc {
  font-size: 15px;
  color: rgba(240,232,255,0.85);
  margin-bottom: 20px;
  max-width: 560px;
}
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--bg-dark);
  padding: 10px 28px;
  border-radius: 24px;
  font-weight: 700;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(200,146,42,0.4); color: var(--bg-dark); }
.btn-outline {
  background: transparent;
  border: 2px solid rgba(240,232,255,0.6);
  color: var(--text-main);
  padding: 10px 28px;
  border-radius: 24px;
  font-size: 15px;
  transition: all var(--transition);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent-light); }
.hero-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}
.hero-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all var(--transition);
}
.hero-dot.active { background: var(--accent); width: 24px; border-radius: 4px; }

/* =====================================================
   统计数据栏
   ===================================================== */
.stats-strip {
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 50%, var(--primary) 100%);
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item { padding: 8px; }
.stat-num {
  font-size: clamp(22px, 3vw, 36px);
  font-weight: 800;
  color: var(--accent-light);
  display: block;
}
.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* =====================================================
   视频卡片网格
   ===================================================== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-dark);
}
.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(0,0,0,0.35);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 52px;
  height: 52px;
  background: rgba(200,146,42,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition);
}
.video-card:hover .play-icon { transform: scale(1.1); }
.play-icon::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: linear-gradient(135deg, var(--pink), var(--primary-light));
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-info { padding: 14px; }
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-dark);
}
.video-stats { display: flex; gap: 10px; }
.video-stats span { display: flex; align-items: center; gap: 3px; }
.video-author { color: var(--text-muted); }

/* =====================================================
   分类标签栏
   ===================================================== */
.category-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.cat-tab {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
}
.cat-tab:hover,
.cat-tab.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-color: var(--accent);
  color: var(--accent-light);
}

/* =====================================================
   特色模块（影视传媒 / AI赋能 / 娱乐专区）
   ===================================================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--pink));
  transform: scaleX(0);
  transition: transform var(--transition);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.feature-icon {
  font-size: 36px;
  margin-bottom: 14px;
  display: block;
}
.feature-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.feature-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* =====================================================
   专家展示
   ===================================================== */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
}
.expert-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.expert-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px;
  border: 3px solid var(--accent);
}
.expert-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}
.expert-role {
  font-size: 13px;
  color: var(--accent-light);
  margin-bottom: 10px;
}
.expert-bio {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}
.expert-awards {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.award-badge {
  background: rgba(200,146,42,0.15);
  color: var(--accent-light);
  border: 1px solid rgba(200,146,42,0.3);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 5px 14px;
  border-radius: 16px;
  font-size: 12px;
  transition: all var(--transition);
}
.btn-sm-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--bg-dark);
  font-weight: 600;
}
.btn-sm-outline {
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-sm-outline:hover { border-color: var(--accent); color: var(--accent-light); }

/* =====================================================
   社区功能模块
   ===================================================== */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.community-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.community-card:hover {
  border-color: var(--pink);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(232,93,138,0.2);
}
.community-card-icon {
  font-size: 32px;
  margin-bottom: 12px;
}
.community-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.community-card-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}
.community-live-dot {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: #4ade80;
}
.live-pulse {
  width: 8px; height: 8px;
  background: #4ade80;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

/* =====================================================
   弹幕区
   ===================================================== */
.danmaku-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  overflow: hidden;
  position: relative;
  height: 120px;
}
.danmaku-track {
  position: absolute;
  width: 100%;
  top: 0; left: 0;
  height: 100%;
  overflow: hidden;
}
.danmaku-item {
  position: absolute;
  white-space: nowrap;
  font-size: 14px;
  color: var(--text-main);
  animation: danmaku-move linear infinite;
  opacity: 0.85;
}
@keyframes danmaku-move {
  0%   { transform: translateX(100vw); }
  100% { transform: translateX(-100%); }
}

/* =====================================================
   用户评价
   ===================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: all var(--transition);
}
.review-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}
.review-user-info { flex: 1; }
.review-username {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}
.review-date {
  font-size: 12px;
  color: var(--text-dark);
}
.review-stars { color: var(--accent-light); font-size: 14px; }
.review-content {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}
.review-tag {
  display: inline-block;
  background: rgba(200,146,42,0.1);
  color: var(--accent-light);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  margin-top: 10px;
}

/* =====================================================
   FAQ 手风琴
   ===================================================== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--accent); }
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 18px 20px;
  text-align: left;
  color: var(--text-main);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--accent-light); }
.faq-icon {
  width: 22px;
  height: 22px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
  transition: all var(--transition);
  color: var(--accent-light);
}
.faq-item.open .faq-icon { background: var(--accent); color: var(--bg-dark); transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.open .faq-answer { max-height: 400px; }
.faq-answer-inner {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

/* =====================================================
   合作品牌 Logo 墙
   ===================================================== */
.partners-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 24px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-item:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  transform: translateY(-2px);
}

/* =====================================================
   联系 / 公司信息
   ===================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info-list { display: flex; flex-direction: column; gap: 16px; }
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.contact-icon {
  font-size: 22px;
  flex-shrink: 0;
  margin-top: 2px;
}
.contact-label {
  font-size: 12px;
  color: var(--text-dark);
  margin-bottom: 3px;
}
.contact-value {
  font-size: 14px;
  color: var(--text-main);
  font-weight: 500;
}
.qr-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.qr-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.qr-item img {
  width: 120px;
  height: 120px;
  margin: 0 auto 10px;
  border-radius: 8px;
  border: 2px solid var(--border);
}
.qr-label {
  font-size: 13px;
  color: var(--text-muted);
}

/* =====================================================
   社交分享
   ===================================================== */
.social-share-wrap {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  transition: all var(--transition);
  border: 1px solid transparent;
}
.share-wechat  { background: #07c160; color: #fff; }
.share-weibo   { background: #e6162d; color: #fff; }
.share-douyin  { background: #010101; color: #fff; border-color: #69c9d0; }
.share-bilibili{ background: #00a1d6; color: #fff; }
.share-btn:hover { opacity: 0.85; transform: translateY(-2px); }

/* =====================================================
   页脚
   ===================================================== */
.site-footer {
  background: var(--bg-section);
  border-top: 1px solid var(--border);
  padding: 50px 0 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand img { height: 44px; margin-bottom: 14px; }
.footer-brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-light);
  margin-bottom: 10px;
}
.footer-brand-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.footer-col-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent-light); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--text-dark);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent-light); }
.update-time { color: var(--accent-light); }

/* =====================================================
   视频播放内页
   ===================================================== */
.video-player-wrap {
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16/9;
  margin-bottom: 20px;
}
.video-player-wrap video,
.video-player-wrap iframe {
  width: 100%;
  height: 100%;
  border: none;
}
.video-detail-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.video-detail-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-dark);
  margin-bottom: 14px;
}
.video-detail-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

/* =====================================================
   分页
   ===================================================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.page-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
}
.page-btn:hover,
.page-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-dark);
  font-weight: 700;
}

/* =====================================================
   通知条
   ===================================================== */
.notice-strip {
  background: linear-gradient(90deg, rgba(200,146,42,0.15), rgba(232,93,138,0.1));
  border: 1px solid rgba(200,146,42,0.2);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.notice-icon { color: var(--accent-light); font-size: 16px; flex-shrink: 0; }

/* =====================================================
   加载更多按钮
   ===================================================== */
.load-more-wrap { text-align: center; margin-top: 36px; }
.btn-load-more {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text-muted);
  padding: 10px 36px;
  border-radius: 24px;
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-load-more:hover {
  border-color: var(--accent);
  color: var(--accent-light);
}

/* =====================================================
   404 页面
   ===================================================== */
.error-page {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
}
.error-code {
  font-size: 120px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 20px;
}
.error-msg { font-size: 20px; color: var(--text-muted); margin-bottom: 30px; }

/* =====================================================
   响应式
   ===================================================== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-menu { display: none; }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(15,10,30,0.98);
    padding: 20px;
    border-bottom: 1px solid var(--border);
    z-index: 999;
  }
  .hamburger { display: flex; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-content { bottom: 30px; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
  .experts-grid { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
  .qr-grid { grid-template-columns: 1fr 1fr; }
  .search-tags { display: none; }
}
@media (max-width: 480px) {
  .hero-section { height: 280px; }
  .hero-btns { flex-direction: column; }
  .video-grid { grid-template-columns: 1fr 1fr; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .community-grid { grid-template-columns: 1fr; }
  .qr-grid { grid-template-columns: 1fr; }
}

/* =====================================================
   动画工具类
   ===================================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 联系表单 ===== */
.contact-form{display:flex;flex-direction:column;gap:18px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-label{font-size:14px;font-weight:600;color:var(--text-main)}
.form-input{background:var(--bg-dark);border:1px solid var(--border);border-radius:8px;padding:10px 14px;color:var(--text-main);font-size:14px;outline:none;transition:border-color .2s;font-family:inherit}
.form-input:focus{border-color:var(--accent)}
.contact-info-list{display:flex;flex-direction:column;gap:16px}
.contact-info-item{display:flex;align-items:flex-start;gap:14px}
.contact-icon{font-size:22px;flex-shrink:0;margin-top:2px}
.contact-label{font-size:12px;color:var(--text-dark);margin-bottom:3px}
.contact-value{font-size:15px;font-weight:600;color:var(--text-main)}
.qr-grid{display:flex;gap:24px;flex-wrap:wrap}
.qr-item{text-align:center}
.qr-label{font-size:12px;color:var(--text-dark);margin-top:8px}
.expert-btns{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.btn-sm{padding:5px 14px;border-radius:6px;font-size:12px;cursor:pointer;border:none;transition:all .2s}
.btn-sm-primary{background:var(--accent);color:#fff}
.btn-sm-outline{background:transparent;color:var(--accent-light);border:1px solid var(--border)}
.expert-awards{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.award-badge{background:rgba(200,146,42,0.1);color:var(--accent-light);border:1px solid var(--border);padding:2px 8px;border-radius:8px;font-size:11px}
.community-live-dot{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:#34d399;margin-top:10px}
.live-pulse{width:8px;height:8px;background:#34d399;border-radius:50%;animation:pulse-live 1.5s ease-in-out infinite;display:inline-block}
@keyframes pulse-live{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.4)}}
.partner-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;text-align:center;font-size:14px;font-weight:600;color:var(--text-muted);transition:border-color .2s,color .2s}
.partner-item:hover{border-color:var(--accent);color:var(--accent-light)}
.review-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:border-color .2s}
.review-card:hover{border-color:var(--accent)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-avatar{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid var(--border);flex-shrink:0}
.review-user-info{flex:1}
.review-username{font-size:14px;font-weight:700;color:var(--text-main)}
.review-date{font-size:12px;color:var(--text-dark);margin-top:2px}
.review-stars{color:#f59e0b;font-size:14px;flex-shrink:0}
.review-content{font-size:14px;color:var(--text-muted);line-height:1.7;margin-bottom:12px}
.review-tag{display:inline-block;background:rgba(200,146,42,0.1);color:var(--accent-light);border:1px solid var(--border);padding:2px 10px;border-radius:10px;font-size:12px}