/* ========================================
   海角 - 海角网 - 海角视频 主样式
   xko63d.cn
   ======================================== */

/* CSS变量 */
:root {
  --primary: #0A2463;
  --primary-light: #1E6091;
  --primary-dark: #061540;
  --accent: #F0A500;
  --accent-light: #FFD166;
  --bg-dark: #0D1B2A;
  --bg-card: #1A2B3C;
  --text-white: #FFFFFF;
  --text-light: #C8D6E5;
  --text-muted: #8899AA;
  --border: rgba(255,255,255,0.1);
  --gradient-main: linear-gradient(135deg, #0A2463 0%, #1E6091 50%, #0A2463 100%);
  --gradient-accent: linear-gradient(135deg, #F0A500 0%, #FFD166 100%);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
  --radius: 12px;
  --radius-sm: 6px;
  --transition: all 0.3s ease;
}

/* 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', '微软雅黑', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-light);
  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, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ========================================
   顶部公告栏
   ======================================== */
.top-bar {
  background: var(--primary-dark);
  padding: 6px 0;
  font-size: 13px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.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: 13px;
}
.top-bar-links a:hover { color: var(--accent); }

/* ========================================
   导航栏
   ======================================== */
.navbar {
  background: rgba(10, 36, 99, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 2px solid var(--accent);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  gap: 20px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.navbar-brand img.nav-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 8px;
}
.navbar-brand .brand-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: 2px;
}
.navbar-brand .brand-text span { color: var(--accent); }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu a {
  color: var(--text-light);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: var(--transition);
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--accent);
  background: rgba(240,165,0,0.1);
}
.nav-search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  flex-shrink: 0;
}
.nav-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-white);
  padding: 8px 16px;
  font-size: 14px;
  width: 180px;
  font-family: inherit;
}
.nav-search input::placeholder { color: var(--text-muted); }
.nav-search button {
  background: var(--accent);
  color: var(--primary-dark);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.nav-search button:hover { background: var(--accent-light); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========================================
   容器
   ======================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========================================
   面包屑
   ======================================== */
.breadcrumb {
  background: rgba(255,255,255,0.03);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--accent); }

/* ========================================
   Hero Banner
   ======================================== */
.hero {
  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;
  filter: brightness(0.5);
  transform: scale(1.05);
  transition: transform 8s ease;
}
.hero:hover .hero-bg { transform: scale(1.0); }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,36,99,0.85) 0%, rgba(10,36,99,0.4) 60%, transparent 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: 60px 0;
}
.hero-tag {
  display: inline-block;
  background: var(--accent);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 1px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  color: var(--text-white);
  line-height: 1.2;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 17px;
  color: var(--text-light);
  margin-bottom: 32px;
  max-width: 520px;
}
.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ========================================
   按钮
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-light);
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(240,165,0,0.4);
}
.btn-outline {
  background: transparent;
  color: var(--text-white);
  border-color: rgba(255,255,255,0.5);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

/* ========================================
   区块标题
   ======================================== */
.section { padding: 70px 0; }
.section-alt { background: rgba(255,255,255,0.02); }
.section-header {
  text-align: center;
  margin-bottom: 50px;
}
.section-tag {
  display: inline-block;
  background: rgba(240,165,0,0.15);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 2px;
  margin-bottom: 12px;
  text-transform: uppercase;
  border: 1px solid rgba(240,165,0,0.3);
}
.section-header h2 {
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 14px;
}
.section-header h2 span { color: var(--accent); }
.section-header p {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}
.section-divider {
  width: 60px;
  height: 3px;
  background: var(--gradient-accent);
  margin: 16px auto 0;
  border-radius: 2px;
}

/* ========================================
   视频卡片
   ======================================== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.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(-6px);
  box-shadow: var(--shadow-card);
  border-color: rgba(240,165,0,0.3);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--primary-dark);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.08); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: var(--transition);
  opacity: 0;
}
.video-card:hover .video-play-btn {
  opacity: 1;
  background: rgba(0,0,0,0.4);
}
.play-icon {
  width: 60px;
  height: 60px;
  background: rgba(240,165,0,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: transform 0.3s ease;
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon::after {
  content: '';
  border-left: 22px solid var(--primary-dark);
  border-top: 13px solid transparent;
  border-bottom: 13px solid transparent;
  margin-left: 5px;
}
.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(--accent);
  color: var(--primary-dark);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-info {
  padding: 16px;
}
.video-info h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-white);
  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-stats {
  display: flex;
  gap: 12px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
}
.video-stats span { display: flex; align-items: center; gap: 4px; }

/* ========================================
   图片卡片
   ======================================== */
.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: 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(1.08); }
.photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,36,99,0.9) 0%, transparent 50%);
  opacity: 0;
  transition: var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 16px;
}
.photo-card:hover .photo-overlay { opacity: 1; }
.photo-overlay h4 {
  color: var(--text-white);
  font-size: 14px;
  font-weight: 600;
}

/* ========================================
   专家卡片
   ======================================== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
}
.expert-card:hover {
  transform: translateY(-4px);
  border-color: rgba(240,165,0,0.3);
  box-shadow: var(--shadow-card);
}
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  margin: 0 auto 16px;
  overflow: hidden;
  border: 3px solid var(--accent);
}
.expert-avatar img { width: 100%; height: 100%; object-fit: cover; }
.expert-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 4px;
}
.expert-title {
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 12px;
}
.expert-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}
.expert-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 16px;
}
.tag {
  background: rgba(240,165,0,0.1);
  color: var(--accent);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid rgba(240,165,0,0.2);
}
.expert-btns {
  display: flex;
  gap: 8px;
  justify-content: center;
}

/* ========================================
   统计数字
   ======================================== */
.stats-bar {
  background: var(--gradient-main);
  padding: 40px 0;
  border-top: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item .num {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  color: var(--accent);
  display: block;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-item .label {
  font-size: 14px;
  color: var(--text-light);
}

/* ========================================
   评价
   ======================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  position: relative;
  transition: var(--transition);
}
.review-card:hover {
  border-color: rgba(240,165,0,0.2);
  transform: translateY(-3px);
}
.review-card::before {
  content: '"';
  position: absolute;
  top: 12px;
  right: 20px;
  font-size: 60px;
  color: rgba(240,165,0,0.15);
  font-family: Georgia, serif;
  line-height: 1;
}
.review-stars {
  color: var(--accent);
  font-size: 16px;
  margin-bottom: 12px;
}
.review-text {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.7;
}
.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.review-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 600; color: var(--text-white); }
.review-date { font-size: 12px; color: var(--text-muted); }

/* ========================================
   FAQ
   ======================================== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(240,165,0,0.2); }
.faq-question {
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-white);
  gap: 16px;
}
.faq-question .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(240,165,0,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
  color: var(--accent);
  font-size: 18px;
  font-weight: 300;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--accent); color: var(--primary-dark); }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 18px;
}

/* ========================================
   合作品牌
   ======================================== */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 20px;
}
.partner-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  transition: var(--transition);
  min-height: 80px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
}
.partner-item:hover {
  border-color: rgba(240,165,0,0.3);
  color: var(--accent);
  transform: scale(1.03);
}

/* ========================================
   联系我们
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.contact-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  text-align: center;
}
.contact-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(240,165,0,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 28px;
}
.contact-card h4 { font-size: 16px; font-weight: 700; color: var(--text-white); margin-bottom: 8px; }
.contact-card p { font-size: 14px; color: var(--text-muted); }
.qr-box { text-align: center; }
.qr-box img {
  width: 140px;
  height: 140px;
  margin: 0 auto 10px;
  border-radius: 8px;
  border: 2px solid var(--border);
}
.qr-box p { font-size: 13px; color: var(--text-muted); }

/* ========================================
   分享按钮
   ======================================== */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.share-label { font-size: 14px; color: var(--text-muted); }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid var(--border);
  color: var(--text-light);
}
.share-btn:hover { transform: translateY(-2px); color: var(--text-white); }
.share-wechat:hover { background: #07C160; border-color: #07C160; }
.share-weibo:hover { background: #E6162D; border-color: #E6162D; }
.share-douyin:hover { background: #000; border-color: #69C9D0; }
.share-bilibili:hover { background: #00A1D6; border-color: #00A1D6; }

/* ========================================
   页脚
   ======================================== */
.footer {
  background: var(--primary-dark);
  border-top: 2px solid var(--accent);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand img {
  height: 50px;
  width: auto;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.7;
}
.footer-col h5 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-white);
  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-qr-row {
  display: flex;
  gap: 20px;
  margin-top: 16px;
}
.footer-bottom {
  background: rgba(0,0,0,0.3);
  padding: 20px 0;
  border-top: 1px solid var(--border);
  margin-top: 0;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

/* ========================================
   How-To 加入指南
   ======================================== */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
  counter-reset: step;
}
.howto-step {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border);
  position: relative;
  text-align: center;
  transition: var(--transition);
}
.howto-step:hover {
  border-color: rgba(240,165,0,0.3);
  transform: translateY(-4px);
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: var(--primary-dark);
  font-size: 20px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.howto-step h4 { font-size: 15px; font-weight: 700; color: var(--text-white); margin-bottom: 8px; }
.howto-step p { font-size: 13px; color: var(--text-muted); }

/* ========================================
   AI赋能模块
   ======================================== */
.ai-features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.ai-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(30,96,145,0.2) 100%);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid rgba(30,96,145,0.3);
  transition: var(--transition);
}
.ai-card:hover {
  border-color: rgba(240,165,0,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}
.ai-icon {
  font-size: 36px;
  margin-bottom: 16px;
}
.ai-card h4 { font-size: 16px; font-weight: 700; color: var(--text-white); margin-bottom: 8px; }
.ai-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ========================================
   直播/社区功能
   ======================================== */
.community-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.comm-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: var(--transition);
}
.comm-card:hover {
  border-color: rgba(240,165,0,0.2);
  transform: translateX(4px);
}
.comm-icon {
  font-size: 32px;
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: rgba(240,165,0,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.comm-card h4 { font-size: 15px; font-weight: 700; color: var(--text-white); margin-bottom: 6px; }
.comm-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ========================================
   页面头部（内页）
   ======================================== */
.page-hero {
  background: var(--gradient-main);
  padding: 60px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../images/banner1.jpg') center/cover no-repeat;
  opacity: 0.15;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  color: var(--text-white);
  margin-bottom: 12px;
}
.page-hero p {
  font-size: 16px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   Tab 切换
   ======================================== */
.tab-nav {
  display: flex;
  gap: 4px;
  background: rgba(255,255,255,0.04);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 32px;
  overflow-x: auto;
}
.tab-btn {
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  transition: var(--transition);
}
.tab-btn.active, .tab-btn:hover {
  background: var(--accent);
  color: var(--primary-dark);
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .community-features { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-menu { display: none; position: absolute; top: 100%; left: 0; right: 0; background: rgba(10,36,99,0.98); flex-direction: column; padding: 16px; gap: 4px; border-top: 1px solid var(--border); }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-search { display: none; }
  .hero { min-height: 420px; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 50px 0; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-btns { flex-direction: column; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

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

/* ========================================
   滚动条
   ======================================== */
::-webkit-scrollbar { width: 6px; height: 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); }

/* ========================================
   动画
   ======================================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp 0.6s ease forwards; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
.live-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #FF4444;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
  margin-right: 6px;
}

/* ========================================
   视频模态框
   ======================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius);
  width: 100%;
  max-width: 800px;
  overflow: hidden;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}
.modal-overlay.open .modal-content { transform: scale(1); }
.modal-header {
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
}
.modal-header h4 { font-size: 16px; color: var(--text-white); }
.modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-white);
  font-size: 20px;
  transition: var(--transition);
}
.modal-close:hover { background: rgba(255,255,255,0.2); }
.modal-video {
  aspect-ratio: 16/9;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
}