/* =============================================
   海角网 - 全站样式表
   品牌：海角 | 域名：jovfwz.cn
   ============================================= */

/* CSS变量 - 原创配色方案 */
:root {
  --primary: #0d2b4e;
  --primary-light: #1a4a7a;
  --accent: #c8a84b;
  --accent-light: #e8c96a;
  --teal: #0e7490;
  --teal-light: #22d3ee;
  --bg-dark: #060f1e;
  --bg-card: #0f1f35;
  --bg-card2: #122540;
  --text-main: #e8f0fe;
  --text-muted: #94a3b8;
  --text-light: #cbd5e1;
  --border: rgba(200,168,75,0.2);
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --radius: 12px;
  --radius-sm: 6px;
  --transition: all 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); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-light); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; outline: none; }

/* 容器 */
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.container-sm { max-width: 960px; margin: 0 auto; padding: 0 20px; }

/* =============================================
   顶部工具栏
   ============================================= */
.top-bar {
  background: var(--bg-dark);
  border-bottom: 1px solid rgba(200,168,75,0.15);
  padding: 6px 0;
  font-size: 12px;
  color: var(--text-muted);
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.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: linear-gradient(135deg, var(--primary) 0%, #0a1e38 100%);
  border-bottom: 2px solid var(--accent);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.site-logo img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--accent);
}
.logo-text { display: flex; flex-direction: column; }
.logo-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 2px;
  line-height: 1.2;
}
.logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* 主导航 */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--text-light);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--accent);
  background: rgba(200,168,75,0.1);
}

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

/* =============================================
   搜索框
   ============================================= */
.search-bar-wrap {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.search-bar-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 700px;
  margin: 0 auto;
}
.search-bar-inner .search-label {
  color: var(--accent);
  font-size: 13px;
  white-space: nowrap;
  font-weight: 600;
}
.search-form {
  display: flex;
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  background: var(--bg-dark);
}
.search-form input {
  flex: 1;
  background: none;
  border: none;
  padding: 9px 18px;
  color: var(--text-main);
  font-size: 14px;
  outline: none;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form button {
  background: var(--accent);
  color: var(--bg-dark);
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.search-form button:hover { background: var(--accent-light); }

/* =============================================
   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 {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero_banner.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(0.45);
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6,15,30,0.85) 0%, rgba(13,43,78,0.6) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}
.hero-tag {
  display: inline-block;
  background: var(--accent);
  color: var(--bg-dark);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.hero h1 {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 16px;
  color: #fff;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.hero p {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 28px;
  max-width: 520px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--accent);
  color: var(--bg-dark);
  padding: 12px 28px;
  border-radius: 24px;
  font-weight: 700;
  font-size: 15px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover { background: var(--accent-light); color: var(--bg-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(200,168,75,0.4); }
.btn-outline {
  border: 2px solid var(--accent);
  color: var(--accent);
  padding: 10px 26px;
  border-radius: 24px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline:hover { background: var(--accent); color: var(--bg-dark); transform: translateY(-2px); }
.btn-sm {
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  background: var(--accent);
  color: var(--bg-dark);
  transition: var(--transition);
  display: inline-block;
}
.btn-sm:hover { background: var(--accent-light); color: var(--bg-dark); }

/* 统计数字 */
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid rgba(200,168,75,0.2);
}
.stat-item { text-align: center; }
.stat-num { font-size: 28px; font-weight: 800; color: var(--accent); display: block; }
.stat-label { font-size: 12px; color: var(--text-muted); }

/* =============================================
   区块标题
   ============================================= */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-card); }
.section-title {
  text-align: center;
  margin-bottom: 48px;
}
.section-title h2 {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}
.section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 10px auto 0;
  border-radius: 2px;
}
.section-title p { color: var(--text-muted); font-size: 15px; max-width: 560px; margin: 0 auto; }
.section-title .tag {
  display: inline-block;
  background: rgba(200,168,75,0.15);
  color: var(--accent);
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 12px;
  margin-bottom: 10px;
  border: 1px solid rgba(200,168,75,0.3);
}

/* =============================================
   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);
  border-color: rgba(200,168,75,0.4);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #0a1e38;
}
.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); }
.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 .play-btn { opacity: 1; }
.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(200,168,75,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--bg-dark);
  margin-left: 4px;
}
.video-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--accent);
  color: var(--bg-dark);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 3px;
}
.video-info { padding: 14px; }
.video-info h3 {
  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;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.video-tag {
  background: rgba(14,116,144,0.2);
  color: var(--teal-light);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  border: 1px solid rgba(14,116,144,0.3);
}

/* =============================================
   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);
  overflow: hidden;
  position: relative;
  aspect-ratio: 3/4;
  cursor: pointer;
  border: 1px solid var(--border);
}
.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.photo-card:hover img { transform: scale(1.08); }
.photo-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  padding: 20px 12px 12px;
  transform: translateY(100%);
  transition: var(--transition);
}
.photo-card:hover .photo-overlay { transform: translateY(0); }
.photo-overlay span { color: #fff; font-size: 13px; font-weight: 600; }

/* =============================================
   专家卡片
   ============================================= */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(200,168,75,0.4);
}
.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: 17px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.expert-title { 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-awards { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 14px; }
.award-tag {
  background: rgba(200,168,75,0.1);
  color: var(--accent);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  border: 1px solid rgba(200,168,75,0.25);
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.expert-btns a {
  flex: 1;
  text-align: center;
  padding: 7px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.expert-btns .btn-contact {
  background: var(--accent);
  color: var(--bg-dark);
}
.expert-btns .btn-works {
  border: 1px solid var(--accent);
  color: var(--accent);
}

/* =============================================
   功能特性
   ============================================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.feature-card:hover {
  border-color: rgba(200,168,75,0.4);
  transform: translateY(-3px);
}
.feature-icon {
  font-size: 36px;
  margin-bottom: 14px;
  display: block;
}
.feature-card h3 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.feature-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* =============================================
   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: var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-item:hover { border-color: var(--accent); color: var(--accent); }

/* =============================================
   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-radius: var(--radius);
  padding: 22px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.review-card:hover { border-color: rgba(200,168,75,0.3); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}
.review-user-name { font-size: 14px; font-weight: 600; color: #fff; }
.review-user-tag { font-size: 12px; color: var(--text-muted); }
.review-stars { color: var(--accent); font-size: 14px; margin-bottom: 10px; }
.review-text { font-size: 14px; color: var(--text-light); line-height: 1.7; }
.review-date { font-size: 12px; color: var(--text-muted); margin-top: 10px; }

/* =============================================
   FAQ
   ============================================= */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  border: 1px solid var(--border);
  overflow: hidden;
}
.faq-question {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}
.faq-question:hover { color: var(--accent); }
.faq-question .faq-icon {
  color: var(--accent);
  font-size: 20px;
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  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-answer { max-height: 200px; padding: 0 20px 16px; }

/* =============================================
   联系我们
   ============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info h3 { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 20px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 16px;
  padding: 14px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.contact-icon { font-size: 22px; flex-shrink: 0; margin-top: 2px; }
.contact-label { font-size: 12px; color: var(--text-muted); margin-bottom: 2px; }
.contact-value { font-size: 14px; color: var(--text-main); font-weight: 500; }
.qr-grid { display: flex; gap: 20px; justify-content: center; }
.qr-item { text-align: center; }
.qr-item img { width: 130px; height: 130px; border-radius: var(--radius-sm); border: 2px solid var(--border); }
.qr-item p { font-size: 12px; color: var(--text-muted); margin-top: 8px; }

/* =============================================
   社区入口
   ============================================= */
.community-entry {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}
.entry-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px 14px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.entry-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}
.entry-icon { font-size: 32px; margin-bottom: 10px; display: block; }
.entry-name { font-size: 14px; font-weight: 600; color: var(--text-main); margin-bottom: 4px; }
.entry-count { font-size: 12px; color: var(--text-muted); }

/* =============================================
   分享按钮
   ============================================= */
.share-section { padding: 24px 0; border-top: 1px solid var(--border); }
.share-btns { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.share-label { font-size: 14px; color: var(--text-muted); }
.share-btn {
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}
.share-wechat { background: #07c160; color: #fff; }
.share-weibo { background: #e6162d; color: #fff; }
.share-douyin { background: #010101; color: #fff; border: 1px solid #333; }
.share-bilibili { background: #00a1d6; color: #fff; }
.share-btn:hover { opacity: 0.85; transform: translateY(-2px); }

/* =============================================
   页脚
   ============================================= */
.site-footer {
  background: #050d1a;
  border-top: 2px solid var(--accent);
  padding: 48px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .site-logo { margin-bottom: 16px; }
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; }
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 13px; color: var(--text-muted); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 16px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom p { font-size: 12px; color: var(--text-muted); }
.footer-links { display: flex; gap: 16px; }
.footer-links a { font-size: 12px; color: var(--text-muted); }
.footer-links a:hover { color: var(--accent); }
.update-time { font-size: 12px; color: var(--text-muted); }

/* =============================================
   内页样式
   ============================================= */
.page-hero {
  background: linear-gradient(135deg, var(--primary) 0%, #0a1e38 100%);
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--border);
}
.page-hero h1 { font-size: clamp(24px, 3vw, 36px); font-weight: 800; color: #fff; margin-bottom: 10px; }
.page-hero p { font-size: 15px; color: var(--text-muted); }
.page-content { padding: 48px 0; }

/* 标签页 */
.tab-nav {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: var(--transition);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}
.tab-btn.active, .tab-btn:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* 侧边栏 */
.sidebar-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}
.sidebar-widget {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  margin-bottom: 20px;
}
.sidebar-widget h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.sidebar-list li {
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}
.sidebar-list li a { color: var(--text-muted); }
.sidebar-list li a:hover { color: var(--accent); }
.sidebar-list li:last-child { border-bottom: none; }

/* 文章卡片 */
.article-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  display: flex;
  gap: 0;
  transition: var(--transition);
  margin-bottom: 16px;
}
.article-card:hover { border-color: rgba(200,168,75,0.4); transform: translateX(4px); }
.article-thumb {
  width: 160px;
  flex-shrink: 0;
  overflow: hidden;
}
.article-thumb img { width: 100%; height: 100%; object-fit: cover; }
.article-body { padding: 16px 20px; flex: 1; }
.article-body h3 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.article-body p { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 10px; }
.article-meta { font-size: 12px; color: var(--text-muted); display: flex; gap: 12px; }

/* =============================================
   How-To 步骤
   ============================================= */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  counter-reset: steps;
}
.step-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 20px;
  border: 1px solid var(--border);
  position: relative;
  transition: var(--transition);
}
.step-card:hover { border-color: rgba(200,168,75,0.4); }
.step-num {
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: var(--bg-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
  margin-bottom: 14px;
}
.step-card h3 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.step-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* =============================================
   AI功能展示
   ============================================= */
.ai-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.ai-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card2) 100%);
  border-radius: var(--radius);
  padding: 28px 22px;
  border: 1px solid rgba(14,116,144,0.3);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.ai-card::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(14,116,144,0.2) 0%, transparent 70%);
  border-radius: 50%;
}
.ai-card:hover { border-color: rgba(34,211,238,0.4); transform: translateY(-3px); }
.ai-icon { font-size: 40px; margin-bottom: 16px; display: block; }
.ai-card h3 { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.ai-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }
.ai-tag {
  display: inline-block;
  background: rgba(34,211,238,0.1);
  color: var(--teal-light);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  margin-top: 12px;
  border: 1px solid rgba(34,211,238,0.2);
}

/* =============================================
   公司信息
   ============================================= */
.company-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.company-img {
  width: 200px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.company-img img { width: 100%; height: 140px; object-fit: cover; }
.company-info h3 { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.company-info p { font-size: 14px; color: var(--text-muted); line-height: 1.8; margin-bottom: 14px; }
.company-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.company-tag {
  background: rgba(200,168,75,0.1);
  color: var(--accent);
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 10px;
  border: 1px solid rgba(200,168,75,0.2);
}

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

/* =============================================
   通知条
   ============================================= */
.notice-bar {
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
  overflow: hidden;
}
.notice-inner { display: flex; align-items: center; gap: 14px; }
.notice-tag {
  background: var(--accent);
  color: var(--bg-dark);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 10px;
  white-space: nowrap;
}
.notice-scroll {
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
}
.notice-text {
  display: inline-block;
  animation: scrollText 30s linear infinite;
  font-size: 13px;
  color: var(--text-light);
}
@keyframes scrollText {
  0% { transform: translateX(100%); }
  100% { transform: translateX(-100%); }
}

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1024px) {
  .video-grid-4 { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ai-features { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .sidebar-layout { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .main-nav { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--primary); padding: 16px; border-bottom: 2px solid var(--accent); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 16px; border-radius: var(--radius-sm); }
  .menu-toggle { display: flex; }
  .site-header { position: relative; }
  .hero { min-height: 380px; }
  .hero-stats { gap: 16px; }
  .video-grid-4, .video-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .ai-features { grid-template-columns: 1fr; }
  .company-card { flex-direction: column; }
  .company-img { width: 100%; }
  .article-card { flex-direction: column; }
  .article-thumb { width: 100%; height: 160px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section { padding: 40px 0; }
}
@media (max-width: 480px) {
  .video-grid-4, .video-grid-3, .video-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 24px; }
  .hero-btns { flex-direction: column; }
  .hero-stats { flex-wrap: wrap; justify-content: center; }
  .qr-grid { flex-direction: column; align-items: center; }
}

/* =============================================
   懒加载
   ============================================= */
img[data-src] { opacity: 0; transition: opacity 0.4s; }
img.loaded { opacity: 1; }

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

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

/* =============================================
   工具类
   ============================================= */
.text-center { text-align: center; }
.text-accent { color: var(--accent); }
.text-muted { color: var(--text-muted); }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.mb-8 { margin-bottom: 32px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.w-full { width: 100%; }
.hidden { display: none; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }