/* ========================================
   困困兔传媒 - 主样式文件
   xtaysrb.cn
   ======================================== */

/* CSS变量 - 原创配色方案 */
:root {
  --primary: #e8294a;
  --primary-dark: #c01f38;
  --primary-light: #ff5c75;
  --secondary: #ff8fa3;
  --accent: #ffb3c1;
  --gold: #d4a843;
  --dark: #1a1a2e;
  --dark-2: #16213e;
  --dark-3: #0f3460;
  --text-main: #2c2c3e;
  --text-muted: #6b7280;
  --text-light: #9ca3af;
  --bg-white: #ffffff;
  --bg-light: #fdf2f4;
  --bg-gray: #f8f9fa;
  --border: #f0d0d8;
  --shadow-sm: 0 2px 8px rgba(232,41,74,0.08);
  --shadow-md: 0 4px 20px rgba(232,41,74,0.12);
  --shadow-lg: 0 8px 40px rgba(232,41,74,0.18);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* 重置与基础 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-main);
  background: var(--bg-white);
  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; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ========================================
   顶部公告栏
   ======================================== */
.top-bar {
  background: linear-gradient(90deg, var(--dark) 0%, var(--dark-3) 100%);
  color: #fff;
  font-size: 13px;
  padding: 7px 0;
  text-align: center;
}
.top-bar a { color: var(--accent); margin: 0 8px; }
.top-bar a:hover { color: #fff; }

/* ========================================
   头部导航
   ======================================== */
.site-header {
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 2px solid var(--accent);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.site-logo img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}
.site-logo .logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 1px;
}
.site-logo .logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  display: block;
  line-height: 1;
}

/* 主导航 */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  background: var(--bg-light);
  color: var(--primary);
}
.nav-btn {
  background: var(--primary);
  color: #fff !important;
  border-radius: var(--radius-sm);
  padding: 8px 18px !important;
}
.nav-btn:hover { background: var(--primary-dark) !important; color: #fff !important; }

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}

/* 搜索框 */
.search-bar-wrap {
  background: var(--bg-light);
  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: 10px;
}
.search-form {
  display: flex;
  align-items: center;
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 30px;
  overflow: hidden;
  flex: 1;
  max-width: 600px;
  transition: var(--transition);
}
.search-form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232,41,74,0.1);
}
.search-form input {
  flex: 1;
  border: none;
  outline: none;
  padding: 9px 18px;
  font-size: 14px;
  background: transparent;
  color: var(--text-main);
}
.search-form button {
  background: var(--primary);
  color: #fff;
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 0 30px 30px 0;
  transition: var(--transition);
}
.search-form button:hover { background: var(--primary-dark); }
.search-hot-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-hot-tags span { font-size: 12px; color: var(--text-muted); }
.search-hot-tags a {
  font-size: 12px;
  color: var(--primary);
  background: var(--bg-light);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
}
.search-hot-tags a:hover { background: var(--primary); color: #fff; }

/* ========================================
   面包屑
   ======================================== */
.breadcrumb {
  background: var(--bg-gray);
  padding: 10px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a { color: var(--primary); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { color: var(--text-light); }

/* ========================================
   Hero 横幅
   ======================================== */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 60%, #1a0a12 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.3;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(26,26,46,0.95) 0%, rgba(26,26,46,0.6) 60%, transparent 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(232,41,74,0.2);
  border: 1px solid var(--primary);
  color: var(--accent);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 13px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 16px;
}
.hero h1 em { color: var(--primary-light); font-style: normal; }
.hero p {
  font-size: clamp(14px, 2vw, 18px);
  color: rgba(255,255,255,0.8);
  max-width: 560px;
  margin-bottom: 28px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 13px 30px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(232,41,74,0.35);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline {
  background: transparent;
  color: #fff;
  padding: 13px 30px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  border: 2px solid rgba(255,255,255,0.5);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 28px; font-weight: 900; color: var(--primary-light); }
.hero-stat .label { font-size: 12px; color: rgba(255,255,255,0.6); }

/* ========================================
   通用区块
   ======================================== */
.section { padding: 60px 0; }
.section-alt { background: var(--bg-light); }
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.section-header { text-align: center; margin-bottom: 40px; }
.section-tag {
  display: inline-block;
  background: var(--bg-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  margin-bottom: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(22px, 3.5vw, 34px);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}
.section-title em { color: var(--primary); font-style: normal; }
.section-desc { font-size: 15px; color: var(--text-muted); 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-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--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(0,0,0,0.3);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 56px;
  height: 56px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(232,41,74,0.5);
  transform: scale(0.8);
  transition: var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 12px;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-info { padding: 14px; }
.video-title {
  font-size: 14px;
  font-weight: 700;
  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;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-meta svg { width: 13px; height: 13px; }
.video-author {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.video-author img {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}
.video-author .name { font-size: 12px; color: var(--text-muted); }
.video-author .follow-btn {
  margin-left: auto;
  font-size: 11px;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 2px 8px;
  border-radius: 10px;
}

/* ========================================
   图片卡片
   ======================================== */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.photo-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  aspect-ratio: 3/4;
  cursor: pointer;
}
.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.photo-card:hover img { transform: scale(1.06); }
.photo-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  padding: 20px 14px 12px;
  opacity: 0;
  transition: var(--transition);
}
.photo-card:hover .photo-overlay { opacity: 1; }
.photo-overlay .title { color: #fff; font-size: 13px; font-weight: 600; }

/* ========================================
   专家卡片
   ======================================== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px;
  border: 3px solid var(--accent);
}
.expert-name { font-size: 17px; font-weight: 800; margin-bottom: 4px; }
.expert-role { font-size: 13px; color: var(--primary); margin-bottom: 10px; }
.expert-desc { 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-tag {
  font-size: 11px;
  background: var(--bg-light);
  color: var(--gold);
  border: 1px solid #f0e0b0;
  padding: 2px 8px;
  border-radius: 10px;
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.expert-btns a {
  font-size: 12px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.btn-sm-primary { background: var(--primary); color: #fff; }
.btn-sm-outline { border: 1px solid var(--primary); color: var(--primary); }
.btn-sm-primary:hover { background: var(--primary-dark); }
.btn-sm-outline:hover { background: var(--bg-light); }

/* ========================================
   评论区
   ======================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.review-card:hover { box-shadow: var(--shadow-md); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}
.review-user { flex: 1; }
.review-name { font-size: 14px; font-weight: 700; }
.review-date { font-size: 12px; color: var(--text-muted); }
.review-stars { color: #f59e0b; font-size: 14px; letter-spacing: 2px; }
.review-text { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.review-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }
.review-tag {
  font-size: 11px;
  background: var(--bg-light);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 10px;
}

/* ========================================
   FAQ
   ======================================== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  background: var(--bg-white);
  transition: var(--transition);
}
.faq-q:hover { background: var(--bg-light); }
.faq-item.open .faq-q { background: var(--bg-light); color: var(--primary); }
.faq-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bg-light);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 14px;
  transition: var(--transition);
}
.faq-item.open .faq-icon { background: var(--primary); color: #fff; border-color: var(--primary); transform: rotate(45deg); }
.faq-a {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-a { max-height: 300px; padding: 14px 20px 18px; }

/* ========================================
   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-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-item:hover { border-color: var(--primary); color: var(--primary); box-shadow: var(--shadow-sm); }

/* ========================================
   联系我们
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info h3 { font-size: 22px; font-weight: 800; margin-bottom: 20px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}
.contact-icon {
  width: 42px;
  height: 42px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--primary);
  font-size: 18px;
}
.contact-item .label { font-size: 12px; color: var(--text-muted); }
.contact-item .value { font-size: 14px; font-weight: 600; color: var(--text-main); }
.qr-row { display: flex; gap: 20px; margin-top: 24px; }
.qr-item { text-align: center; }
.qr-item img { width: 110px; height: 110px; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.qr-item p { font-size: 12px; color: var(--text-muted); margin-top: 6px; }

/* ========================================
   社区入口
   ======================================== */
.community-entries {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}
.community-entry {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  transition: var(--transition);
}
.community-entry:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.entry-icon { font-size: 32px; margin-bottom: 10px; }
.entry-name { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.entry-desc { font-size: 12px; color: var(--text-muted); }

/* ========================================
   分享按钮
   ======================================== */
.share-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.share-label { font-size: 13px; color: var(--text-muted); }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
}
.share-wechat { background: #07c160; color: #fff; }
.share-weibo { background: #e6162d; color: #fff; }
.share-douyin { background: #000; color: #fff; }
.share-bili { background: #00a1d6; color: #fff; }
.share-btn:hover { opacity: 0.85; transform: translateY(-1px); }

/* ========================================
   页脚
   ======================================== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.8);
  padding: 50px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-text { font-size: 22px; font-weight: 800; color: var(--primary-light); }
.footer-brand p { font-size: 13px; line-height: 1.8; margin: 12px 0; color: rgba(255,255,255,0.6); }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 13px; color: rgba(255,255,255,0.6); }
.footer-col ul li a:hover { color: var(--accent); }
.footer-social { display: flex; gap: 10px; margin-top: 14px; }
.social-icon {
  width: 34px;
  height: 34px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}
.social-icon:hover { background: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.5); }
.footer-bottom a { color: rgba(255,255,255,0.6); margin: 0 8px; }
.footer-bottom a:hover { color: var(--accent); }
.footer-logo-img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; }

/* ========================================
   内页通用
   ======================================== */
.page-hero {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
  padding: 50px 0;
  text-align: center;
  color: #fff;
}
.page-hero h1 { font-size: clamp(24px, 4vw, 40px); font-weight: 900; margin-bottom: 10px; }
.page-hero p { font-size: 15px; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto; }

/* ========================================
   标签页/筛选
   ======================================== */
.tab-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.tab-btn {
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  background: var(--bg-white);
  transition: var(--transition);
  cursor: pointer;
}
.tab-btn:hover, .tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ========================================
   加入社区步骤
   ======================================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.step-card {
  text-align: center;
  padding: 28px 20px;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.step-card:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.step-num {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 900;
  color: #fff;
  margin: 0 auto 14px;
}
.step-title { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.step-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ========================================
   统计数字
   ======================================== */
.stats-bar {
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 36px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item .num {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  color: #fff;
}
.stat-item .label { font-size: 13px; color: rgba(255,255,255,0.8); margin-top: 4px; }

/* ========================================
   文章/内容列表
   ======================================== */
.article-list { display: flex; flex-direction: column; gap: 20px; }
.article-item {
  display: flex;
  gap: 18px;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.article-item:hover { box-shadow: var(--shadow-md); }
.article-thumb {
  width: 200px;
  flex-shrink: 0;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.article-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.article-item:hover .article-thumb img { transform: scale(1.05); }
.article-body { padding: 16px 18px 16px 0; flex: 1; }
.article-cat { font-size: 11px; color: var(--primary); font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 6px; }
.article-title { font-size: 16px; font-weight: 700; margin-bottom: 8px; line-height: 1.5; }
.article-title a:hover { color: var(--primary); }
.article-excerpt { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 10px; }
.article-meta { font-size: 12px; color: var(--text-light); display: flex; gap: 14px; }

/* ========================================
   分页
   ======================================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.page-link {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  transition: var(--transition);
}
.page-link:hover, .page-link.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ========================================
   通知横幅
   ======================================== */
.notice-bar {
  background: linear-gradient(90deg, #fff7ed, #fff);
  border: 1px solid #fed7aa;
  border-radius: var(--radius-md);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  font-size: 14px;
  color: #92400e;
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: #fff; box-shadow: var(--shadow-md); padding: 16px; gap: 4px; border-top: 2px solid var(--border); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 10px 16px; border-radius: var(--radius-sm); }
  .hamburger { display: flex; }
  .hero { min-height: 380px; }
  .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)); }
  .article-item { flex-direction: column; }
  .article-thumb { width: 100%; }
  .article-body { padding: 14px; }
  .search-hot-tags { display: none; }
}

@media (max-width: 480px) {
  .hero-btns { flex-direction: column; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .video-grid { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
}

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

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

/* ========================================
   工具类
   ======================================== */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.hidden { display: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }