* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; background: #f5f7fa; }
.header { background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.08); position: fixed; top: 0; left: 0; right: 0; z-index: 1000; }
.header-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 15px 20px; }
.logo { display: flex; align-items: center; font-size: 22px; font-weight: bold; color: #337AB7; text-decoration: none; }
.logo i { font-size: 28px; margin-right: 10px; }
.nav { display: flex; gap: 30px; }
.nav a { color: #333; text-decoration: none; font-size: 15px; padding: 8px 0; border-bottom: 2px solid transparent; transition: all 0.3s; }
.nav a:hover, .nav a.active { color: #337AB7; border-bottom-color: #337AB7; }
.btn-admin { background: #337AB7; color: #fff; padding: 10px 24px; border-radius: 25px; text-decoration: none; font-size: 14px; transition: all 0.3s; }
.btn-admin:hover { background: #286090; transform: translateY(-1px); }
.mobile-menu-btn { display: none; background: none; border: none; font-size: 24px; color: #333; cursor: pointer; }
.mobile-menu { display: none; position: fixed; top: 70px; left: 0; right: 0; background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.1); z-index: 999; padding: 10px 0; }
.mobile-menu.show { display: block; }
.mobile-menu a { display: block; padding: 12px 20px; color: #333; text-decoration: none; font-size: 15px; border-bottom: 1px solid #f0f0f0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section-title { font-size: 24px; font-weight: bold; color: #333; margin-bottom: 30px; text-align: center; }
.section-title span { color: #337AB7; }
.section-header { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: nowrap; margin-bottom: 30px; }

.section-header .section-title { margin-bottom: 0; text-align: left; }
.section-more { color: #337AB7; text-decoration: none; font-size: 14px; font-weight: 500; white-space: nowrap; flex-shrink: 0; display: flex; align-items: center; gap: 2px; }
.section-more:hover { color: #1a5276; }
.hero-section { background: linear-gradient(135deg, #337AB7 0%, #1a5276 100%); color: #fff; padding: 80px 20px; text-align: center; }
.hero-section h1 { font-size: 36px; font-weight: bold; margin-bottom: 20px; }
.hero-section p { font-size: 18px; opacity: 0.9; max-width: 600px; margin: 0 auto; }
.stats-section { padding: 60px 0; }
.stats-card { background: linear-gradient(90deg, #0F2B5C, #2D6EB5); border-radius: 16px; padding: 40px 60px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.stat-item { text-align: center; }
.stat-num { font-size: 42px; font-weight: bold; color: #fff; }
.stat-label { font-size: 14px; color: rgba(255,255,255,0.85); margin-top: 8px; }
.activity-section { padding: 60px 0; }
.activity-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.activity-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.08); transition: all 0.3s; text-decoration: none; color: #333; display: block; }
.activity-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.12); }
.activity-card-img { height: 180px; background: linear-gradient(135deg, #337AB7, #1a5276); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 48px; }
.activity-card-body { padding: 20px; }
.activity-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.activity-card p { font-size: 13px; color: #666; margin-bottom: 4px; }
.live-section { padding: 60px 0; background: #f0f4f8; }
.live-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.live-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
.live-card-thumb { height: 180px; background: #1a1a2e; display: flex; align-items: center; justify-content: center; color: #fff; position: relative; }
.live-card-body { padding: 20px; }
.live-card h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.live-card p { font-size: 13px; color: #666; }
.live-badge { position: absolute; top: 10px; left: 10px; background: #ff4d4f; color: #fff; padding: 4px 12px; border-radius: 4px; font-size: 12px; }
.footer { background: #1a1a2e; color: #fff; padding: 60px 20px 30px; }
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer h5 { font-size: 16px; margin-bottom: 15px; }
.footer p { font-size: 14px; opacity: 0.8; line-height: 1.8; }
.footer a { color: #fff; text-decoration: none; }
.footer a:hover { opacity: 0.7; }
.footer-bottom { text-align: center; padding-top: 30px; margin-top: 30px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 13px; opacity: 0.6; }
@media (max-width: 768px) { .nav { display: none; } .mobile-menu-btn { display: block; } .stats-grid { grid-template-columns: repeat(2, 1fr); } }