/* 国产主播视频社区 - 主样式文件 | taobxb.cn */
/* 原创设计：深林绿 + 翠玉色 + 暗金色配色方案 */

:root {
  --primary: #1a7a3c;
  --primary-dark: #0f5228;
  --primary-light: #2da05a;
  --accent: #4ecb71;
  --accent2: #c8a84b;
  --bg-dark: #0d1f14;
  --bg-card: #132b1c;
  --bg-card2: #1a3525;
  --text-main: #e8f5ec;
  --text-muted: #8ab89a;
  --text-dark: #1a2e22;
  --border: #2a5038;
  --shadow: rgba(0,0,0,0.4);
  --radius: 12px;
  --radius-sm: 6px;
  --transition: 0.3s ease;
}

*, *::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); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent2); }

img { max-width: 100%; height: auto; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ========== 顶部公告栏 ========== */
.top-bar {
  background: linear-gradient(90deg, var(--primary-dark), #0a3d1f, var(--primary-dark));
  padding: 8px 0;
  font-size: 13px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-bar-scroll { white-space: nowrap; animation: marquee 30s linear infinite; }
@keyframes marquee { 0%{transform:translateX(100%)} 100%{transform:translateX(-100%)} }
.top-bar-links a { color: var(--text-muted); margin-left: 16px; font-size: 12px; }
.top-bar-links a:hover { color: var(--accent); }

/* ========== 导航栏 ========== */
.site-header {
  background: rgba(13,31,20,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px var(--shadow);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 20px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.site-logo img {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  object-fit: cover;
}
.logo-text { display: flex; flex-direction: column; }
.logo-name {
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}
.logo-sub { font-size: 11px; color: var(--text-muted); letter-spacing: 2px; }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--text-main);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  background: var(--primary);
  color: var(--accent);
}

.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.btn-join {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-join:hover { transform: translateY(-1px); box-shadow: 0 4px 15px rgba(26,122,60,0.5); }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 5px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--text-main); border-radius: 2px; transition: all var(--transition); }

/* ========== 搜索栏 ========== */
.search-bar-wrap {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.search-form {
  display: flex;
  max-width: 700px;
  margin: 0 auto;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 30px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.search-form:focus-within { border-color: var(--primary-light); }
.search-form input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 10px 20px;
  color: var(--text-main);
  font-size: 14px;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form button {
  background: var(--primary);
  border: none;
  padding: 10px 24px;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  transition: background var(--transition);
  border-radius: 0 30px 30px 0;
}
.search-form button:hover { background: var(--primary-light); }
.search-tags { display: flex; gap: 8px; justify-content: center; margin-top: 8px; flex-wrap: wrap; }
.search-tags span {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 3px 12px;
  border-radius: 12px;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition);
}
.search-tags span:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ========== 面包屑 ========== */
.breadcrumb {
  padding: 10px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 6px; }

/* ========== Hero Banner ========== */
.hero-section {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,31,20,0.88) 0%, rgba(13,31,20,0.5) 60%, rgba(13,31,20,0.3) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 650px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(26,122,60,0.3);
  border: 1px solid var(--primary);
  color: var(--accent);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #fff;
}
.hero-title .hl { color: var(--accent); }
.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 28px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  padding: 12px 28px;
  border-radius: 25px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26,122,60,0.5); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--accent);
  padding: 12px 28px;
  border-radius: 25px;
  font-size: 15px;
  font-weight: 600;
  border: 2px solid var(--accent);
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline:hover { background: var(--accent); color: var(--bg-dark); transform: translateY(-2px); }
.hero-stats {
  display: flex;
  gap: 30px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.stat-item { text-align: center; }
.stat-num { font-size: 26px; font-weight: 800; color: var(--accent); display: block; }
.stat-label { font-size: 12px; color: var(--text-muted); }

/* ========== 通用区块 ========== */
.section { padding: 70px 0; }
.section-alt { background: var(--bg-card); }
.section-header { text-align: center; margin-bottom: 50px; }
.section-tag {
  display: inline-block;
  background: rgba(26,122,60,0.2);
  border: 1px solid var(--primary);
  color: var(--accent);
  padding: 4px 14px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.section-title .hl { color: var(--accent); }
.section-desc { color: var(--text-muted); font-size: 15px; max-width: 600px; margin: 0 auto; }

/* ========== 视频卡片 ========== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
}
.video-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 0 12px 30px rgba(26,122,60,0.25);
}
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--bg-card2);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s 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: background var(--transition);
}
.video-card:hover .video-play-btn { background: rgba(0,0,0,0.45); }
.play-icon {
  width: 54px;
  height: 54px;
  background: rgba(26,122,60,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.7);
  transition: all var(--transition);
  border: 2px solid var(--accent);
}
.video-card:hover .play-icon { opacity: 1; transform: scale(1); }
.play-icon::after {
  content: '';
  border-left: 18px solid #fff;
  border-top: 11px solid transparent;
  border-bottom: 11px solid transparent;
  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 7px;
  border-radius: 4px;
  font-weight: 600;
}
.video-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
}
.badge-hot { background: #e53935; color: #fff; }
.badge-new { background: var(--primary); color: #fff; }
.badge-award { background: var(--accent2); color: #fff; }
.badge-rare { background: #7b1fa2; color: #fff; }
.video-info { padding: 14px; }
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.video-author {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}
.author-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: #fff;
  font-weight: 700;
}
.tag { padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; }
.tag-hot { background: rgba(229,57,53,0.15); color: #ef5350; }
.tag-new { background: rgba(26,122,60,0.2); color: var(--accent); }

/* ========== 专家卡片 ========== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}
.expert-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: 0 10px 25px rgba(26,122,60,0.2); }
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--primary);
}
.expert-name { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.expert-role { font-size: 13px; color: var(--accent); margin-bottom: 10px; }
.expert-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 14px; }
.expert-tags { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.expert-tag {
  background: rgba(26,122,60,0.2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 3px 10px;
  border-radius: 10px;
  font-size: 11px;
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 6px 14px;
  border-radius: 15px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--primary);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-sm-primary { background: var(--primary); color: #fff; }
.btn-sm-outline { background: transparent; color: var(--accent); }
.btn-sm:hover { transform: translateY(-1px); }

/* ========== 功能特性 ========== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 20px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}
.feature-card:hover { border-color: var(--primary); transform: translateY(-3px); }
.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin: 0 auto 16px;
}
.feature-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.feature-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ========== AI工具区 ========== */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.ai-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.ai-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.ai-card-img { aspect-ratio: 16/9; overflow: hidden; }
.ai-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.ai-card:hover .ai-card-img img { transform: scale(1.05); }
.ai-card-body { padding: 20px; }
.ai-icon { font-size: 28px; margin-bottom: 10px; }
.ai-title { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.ai-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ========== 社区功能 ========== */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.community-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 18px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
  cursor: pointer;
}
.community-card:hover { border-color: var(--primary); background: var(--bg-card2); transform: translateY(-3px); }
.community-icon { font-size: 36px; margin-bottom: 12px; }
.community-title { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.community-desc { font-size: 12px; color: var(--text-muted); margin-bottom: 10px; }
.community-count { font-size: 13px; color: var(--accent); font-weight: 600; }

/* ========== 合作品牌 ========== */
.partner-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: all var(--transition);
  cursor: pointer;
}
.partner-item:hover { border-color: var(--primary); color: var(--accent); background: var(--bg-card2); }

/* ========== FAQ ========== */
.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(--primary); }
.faq-q {
  padding: 18px 20px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  user-select: none;
}
.faq-q::after {
  content: '+';
  font-size: 22px;
  color: var(--accent);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding var(--transition);
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  padding: 0 20px;
}
.faq-item.open .faq-a { max-height: 300px; padding: 0 20px 18px; }

/* ========== 用户评价 ========== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 22px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.review-card:hover { border-color: var(--primary); transform: translateY(-3px); }
.review-stars { color: var(--accent2); font-size: 16px; margin-bottom: 10px; }
.review-text { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 14px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
}
.review-name { font-size: 14px; font-weight: 600; color: var(--text-main); }
.review-date { font-size: 11px; color: var(--text-muted); }

/* ========== 联系方式 ========== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.contact-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 22px;
  border: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: all var(--transition);
}
.contact-item:hover { border-color: var(--primary); }
.contact-icon { font-size: 28px; flex-shrink: 0; }
.contact-label { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.contact-value { font-size: 15px; font-weight: 600; color: var(--text-main); }

/* ========== 二维码 ========== */
.qr-grid { display: flex; gap: 30px; justify-content: center; flex-wrap: wrap; }
.qr-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}
.qr-card:hover { border-color: var(--primary); }
.qr-card img { width: 140px; height: 140px; object-fit: contain; margin: 0 auto 10px; border-radius: 8px; }
.qr-label { font-size: 14px; font-weight: 600; color: var(--text-main); margin-bottom: 4px; }
.qr-sub { font-size: 12px; color: var(--text-muted); }

/* ========== 分享栏 ========== */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  margin-top: 20px;
  flex-wrap: wrap;
}
.share-label { font-size: 13px; color: var(--text-muted); }
.share-btn {
  padding: 6px 16px;
  border-radius: 15px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
  background: var(--bg-card2);
  color: var(--text-muted);
}
.share-btn:hover { border-color: var(--primary); color: var(--accent); }
.share-btn.wx:hover { background: #07c160; border-color: #07c160; color: #fff; }
.share-btn.wb:hover { background: #e6162d; border-color: #e6162d; color: #fff; }
.share-btn.dy:hover { background: #000; border-color: #000; color: #fff; }
.share-btn.bili:hover { background: #00a1d6; border-color: #00a1d6; color: #fff; }

/* ========== 内页图片展示 ========== */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.photo-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}
.photo-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.photo-card:hover img { transform: scale(1.08); }
.photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 14px;
}
.photo-card:hover .photo-overlay { opacity: 1; }
.photo-label { font-size: 13px; font-weight: 600; color: #fff; }

/* ========== 页脚 ========== */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-name { font-size: 20px; }
.footer-brand p { font-size: 13px; color: var(--text-muted); margin-top: 12px; line-height: 1.7; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.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); }
.footer-social { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  transition: all var(--transition);
}
.social-btn:hover { border-color: var(--primary); background: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

/* ========== 通知Toast ========== */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--primary);
  color: #fff;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 9999;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s ease;
  box-shadow: 0 4px 20px rgba(26,122,60,0.5);
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ========== 动画 ========== */
.animate-fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-fade-up.loaded { opacity: 1; transform: translateY(0); }

/* ========== 内页横幅 ========== */
.page-hero {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card2) 100%);
  border-bottom: 1px solid var(--border);
  padding: 50px 0;
  text-align: center;
}
.page-hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; color: #fff; margin-bottom: 10px; }
.page-hero p { font-size: 15px; color: var(--text-muted); }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .main-nav { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-dark); border-bottom: 1px solid var(--border); padding: 16px 20px; gap: 4px; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 10px 14px; border-radius: 8px; }
  .hamburger { display: flex; }
  .hero-section { min-height: 420px; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .header-inner { padding: 12px 0; }
  .btn-join { display: none; }
}
@media (max-width: 480px) {
  .hero-btns { flex-direction: column; }
  .hero-stats { flex-wrap: wrap; }
  .qr-grid { flex-direction: column; align-items: center; }
  .video-grid { grid-template-columns: 1fr; }
}

/* ========== 懒加载占位 ========== */
img[data-src] { background: var(--bg-card2); min-height: 100px; }

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