* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif; background: #f5f7fa; color: #333; line-height: 1.6; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }

.header { background: #ffffff; box-shadow: 0 2px 8px rgba(0,0,0,0.08); position: sticky; top: 0; z-index: 1000; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 15px 0; }
.logo { font-size: 28px; font-weight: bold; color: #1a73e8; }
.logo span { color: #e74c3c; }
.nav { display: flex; gap: 30px; }
.nav a { font-size: 16px; color: #333; transition: color 0.3s; }
.nav a:hover { color: #1a73e8; }
.menu-toggle { display: none; font-size: 24px; cursor: pointer; color: #333; }

.hero { background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%); color: #fff; padding: 60px 0; }
.hero-grid { display: grid; grid-template-columns: 1fr 2fr 1fr; gap: 30px; align-items: center; }
.hero-features { display: flex; flex-direction: column; gap: 15px; }
.hero-feature-item { background: rgba(255,255,255,0.15); padding: 12px 15px; border-radius: 8px; font-size: 14px; }
.hero-main { text-align: center; }
.hero-main h1 { font-size: 36px; margin-bottom: 15px; }
.hero-main p { font-size: 18px; margin-bottom: 25px; opacity: 0.95; }
.hero-btn { display: inline-block; background: #e74c3c; color: #fff; padding: 12px 35px; border-radius: 25px; font-size: 16px; transition: transform 0.3s; }
.hero-btn:hover { transform: translateY(-2px); }
.hero-recommend { display: flex; flex-direction: column; gap: 12px; }
.hero-recommend-item { background: rgba(255,255,255,0.15); padding: 10px 12px; border-radius: 6px; font-size: 13px; }

.section { padding: 50px 0; }
.section-title { text-align: center; font-size: 28px; color: #333; margin-bottom: 40px; position: relative; }
.section-title::after { content: ''; display: block; width: 60px; height: 3px; background: #1a73e8; margin: 10px auto 0; }

.sports-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
.sports-card { background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,0.08); transition: transform 0.3s, box-shadow 0.3s; }
.sports-card:hover { transform: translateY(-5px); box-shadow: 0 5px 20px rgba(0,0,0,0.12); }
.sports-card-img { height: 180px; background: #e0e0e0; display: flex; align-items: center; justify-content: center; font-size: 48px; }
.sports-card-body { padding: 20px; }
.sports-card-title { font-size: 18px; font-weight: bold; margin-bottom: 8px; color: #333; }
.sports-card-desc { font-size: 14px; color: #666; line-height: 1.5; }

.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.info-card { background: #fff; padding: 25px; border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.08); }
.info-card-icon { font-size: 36px; margin-bottom: 15px; }
.info-card-title { font-size: 20px; font-weight: bold; margin-bottom: 10px; color: #333; }
.info-card-text { font-size: 14px; color: #666; line-height: 1.6; }

.news-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.news-item { background: #fff; padding: 20px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); display: flex; gap: 15px; }
.news-date { background: #1a73e8; color: #fff; padding: 8px 12px; border-radius: 6px; text-align: center; min-width: 60px; }
.news-date-day { font-size: 24px; font-weight: bold; display: block; }
.news-date-month { font-size: 12px; }
.news-content h3 { font-size: 16px; margin-bottom: 8px; color: #333; }
.news-content p { font-size: 14px; color: #666; line-height: 1.5; }

.footer { background: #2c3e50; color: #fff; padding: 40px 0 20px; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; margin-bottom: 30px; }
.footer-col-title { font-size: 16px; font-weight: bold; margin-bottom: 15px; }
.footer-col a { display: block; font-size: 14px; color: #bdc3c7; margin-bottom: 8px; }
.footer-col a:hover { color: #fff; }
.footer-col p { font-size: 14px; color: #bdc3c7; line-height: 1.6; }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid #34495e; font-size: 13px; color: #95a5a6; }

.promo-float { position: fixed; top: 250px; left: 15px; z-index: 999; display: flex; flex-direction: column; gap: 8px; }
.promo-float a { display: block; background: #f8f9fa; color: #333; padding: 6px 10px; border-radius: 15px; font-size: 11px; box-shadow: 0 1px 5px rgba(0,0,0,0.1); }
.promo-float a:hover { background: #e9ecef; }

.util-float { position: fixed; top: 100px; right: 15px; z-index: 999; display: flex; flex-direction: column; gap: 10px; }
.util-float a { display: block; background: #fff; color: #333; width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 18px; box-shadow: 0 2px 8px rgba(0,0,0,0.15); }
.util-float a:hover { background: #1a73e8; color: #fff; }

.cta-float { position: fixed; top: 160px; right: 15px; z-index: 999; display: flex; flex-direction: column; gap: 12px; }
.cta-float a { display: block; background: #e74c3c; color: #fff; padding: 14px 22px; border-radius: 25px; font-size: 15px; font-weight: bold; box-shadow: 0 4px 15px rgba(231,76,60,0.45); transition: transform 0.3s, box-shadow 0.3s; text-align: center; min-width: 130px; letter-spacing: 1px; }
.cta-float a:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(231,76,60,0.6); color: #fff; }

.breadcrumb { padding: 15px 0; font-size: 14px; color: #666; }
.breadcrumb a { color: #1a73e8; }
.breadcrumb span { margin: 0 8px; color: #999; }

@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-features, .hero-recommend { display: none; }
  .sports-grid { grid-template-columns: repeat(2, 1fr); }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
  .news-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px; box-shadow: 0 5px 10px rgba(0,0,0,0.1); }
  .nav.active { display: flex; }
  .menu-toggle { display: block; }
  .hero-main h1 { font-size: 28px; }
  .hero-main p { font-size: 16px; }
  .section-title { font-size: 24px; }
  .sports-grid { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .promo-float { left: 10px; }
  .util-float { right: 10px; }
  .cta-float { right: 10px; top: 140px; }
  .cta-float a { padding: 10px 16px; font-size: 13px; min-width: 110px; }
}

@media (max-width: 480px) {
  .hero { padding: 40px 0; }
  .hero-main h1 { font-size: 24px; }
  .section { padding: 30px 0; }
  .sports-card-img { height: 150px; }
}