/* 拼搏体育 - 静态站 CSS */
:root {
  --primary: #1a56db;
  --secondary: #10b981;
  --accent: #f59e0b;
  --dark: #1f2937;
  --light: #f9fafb;
  --gray: #6b7280;
  --gray-light: #e5e7eb;
  --border: #d1d5db;
  --radius: 8px;
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);line-height:1.6;color:var(--dark);background:#fff;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--secondary)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* Header */
.header{background:#fff;border-bottom:1px solid var(--gray-light);position:sticky;top:0;z-index:100;box-shadow:0 2px 4px rgba(0,0,0,.05)}
.header .container{display:flex;justify-content:space-between;align-items:center;padding:16px 20px}
.logo{display:flex;align-items:center;gap:12px}
.logo img{height:40px;width:auto}
.logo h1{font-size:1.5rem;font-weight:700;color:var(--dark)}
.nav{display:flex;gap:32px}
.nav a{font-weight:500;color:var(--dark);font-size:1rem;position:relative}
.nav a:hover,.nav a.active{color:var(--primary)}
.nav a.active::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:2px;background:var(--primary)}
.hamburger{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--dark)}

/* Hero */
.hero{background:linear-gradient(rgba(0,0,0,.45),rgba(0,0,0,.45)),url('/images/hero.png');background-size:cover;background-position:center;color:#fff;padding:80px 20px;text-align:center;min-height:500px;display:flex;align-items:center}
.hero-content{max-width:800px;margin:0 auto}
.hero h1{font-size:3rem;font-weight:800;margin-bottom:20px;line-height:1.2}
.hero p{font-size:1.25rem;margin-bottom:32px;opacity:.9}
.cta-button{display:inline-block;background:var(--primary);color:#fff;padding:14px 32px;border-radius:var(--radius);font-weight:600;font-size:1.1rem;border:none;cursor:pointer;transition:background .2s,transform .2s}
.cta-button:hover{background:#1a4fa0;transform:translateY(-2px)}
.cta-button.secondary{background:transparent;border:2px solid #fff;margin-left:16px}
.cta-button.secondary:hover{background:rgba(255,255,255,.1)}

/* Section */
.section{padding:80px 0}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:2.5rem;font-weight:700;color:var(--dark);margin-bottom:16px}
.section-title p{font-size:1.125rem;color:var(--gray);max-width:700px;margin:0 auto}

/* Categories */
.categories-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:32px}
.category-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.category-card img{width:100%;height:200px;object-fit:cover}
.category-card-content{padding:24px}
.category-card h3{font-size:1.5rem;margin-bottom:12px}
.category-card p{color:var(--gray);margin-bottom:20px}

/* Article Grid */
.articles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:32px}
.article-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s}
.article-card:hover{transform:translateY(-4px)}
.article-card img{width:100%;height:200px;object-fit:cover}
.article-card-content{padding:24px}
.article-card .meta{font-size:.875rem;color:var(--gray);margin-bottom:8px}
.article-card h3{font-size:1.25rem;margin-bottom:12px;line-height:1.4}
.article-card p{color:var(--gray);font-size:.95rem;margin-bottom:16px}
.read-more{font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}

/* Category page */
.category-header{background:var(--light);padding:60px 0;text-align:center}
.category-header h1{font-size:2.5rem;margin-bottom:16px}
.category-description{max-width:700px;margin:0 auto;color:var(--gray)}
.article-list{display:flex;flex-direction:column;gap:32px}
.article-item{display:grid;grid-template-columns:300px 1fr;gap:32px;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.article-item img{width:100%;height:100%;object-fit:cover;min-height:240px}
.article-item-content{padding:32px}
.article-item .meta{font-size:.875rem;color:var(--gray);margin-bottom:12px}
.article-item h2{font-size:1.75rem;margin-bottom:16px}
.article-item p{color:var(--gray);margin-bottom:20px}

/* Article Page */
.article-header{padding:60px 0 40px}
.article-header .container{max-width:900px}
.breadcrumb{margin-bottom:16px;color:var(--gray);font-size:.875rem}
.breadcrumb a{color:var(--gray)}
.breadcrumb a:hover{color:var(--primary)}
.article-header h1{font-size:2.5rem;margin-bottom:20px;line-height:1.3}
.article-meta{display:flex;align-items:center;gap:20px;color:var(--gray);font-size:.875rem;margin-bottom:32px}
.article-content{max-width:1100px;margin:0 auto;padding:40px 0 80px;display:grid;grid-template-columns:1fr 300px;gap:48px}
.article-main{font-size:1.125rem;line-height:1.8}
.article-main h2{font-size:1.75rem;margin:2rem 0 1rem}
.article-main h3{font-size:1.375rem;margin:1.5rem 0 .75rem}
.article-main p{margin-bottom:1.5rem}
.article-main img{border-radius:var(--radius);margin:2rem 0}
.article-main ul,.article-main ol{margin-bottom:1.5rem;padding-left:2rem}
.article-main blockquote{border-left:4px solid var(--primary);padding-left:1.5rem;margin:2rem 0;font-style:italic;color:var(--gray)}

/* Aside */
.article-aside{padding:24px;background:var(--light);border-radius:var(--radius)}
.article-aside h3{font-size:1.25rem;margin-bottom:20px}
.related-articles{display:flex;flex-direction:column;gap:16px}
.related-article{padding-bottom:16px;border-bottom:1px solid var(--border)}
.related-article:last-child{border:none;padding-bottom:0}
.related-article h4{font-size:1rem;margin-bottom:4px}
.related-article .meta{font-size:.75rem;color:var(--gray)}

/* Footer */
.footer{background:var(--dark);color:#fff;padding:60px 0 40px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:48px;margin-bottom:48px}
.footer-col h3{font-size:1.25rem;margin-bottom:20px;color:#fff}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:12px}
.footer-col a{color:#d1d5db}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid #374151;padding-top:32px;text-align:center;color:#9ca3af;font-size:.875rem}

/* Features Section */
.features-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;margin-top:48px}
.feature-card{display:flex;gap:24px;align-items:flex-start}
.feature-card img{width:120px;height:120px;object-fit:cover;border-radius:var(--radius);flex-shrink:0}
.feature-card h3{font-size:1.25rem;margin-bottom:8px}
.feature-card p{color:var(--gray);font-size:.95rem}

/* Data Section */
.data-bar{display:flex;justify-content:center;gap:60px;flex-wrap:wrap;text-align:center;padding:60px 0}
.data-item .num{font-size:3rem;font-weight:800;color:var(--primary)}
.data-item .label{font-size:1rem;color:var(--gray);margin-top:8px}

/* CTA Section */
.cta-section{background:linear-gradient(135deg,var(--primary),#0f3a90);color:#fff;text-align:center;padding:80px 20px}
.cta-section h2{font-size:2.5rem;margin-bottom:16px}
.cta-section p{font-size:1.125rem;opacity:.9;margin-bottom:32px;max-width:600px;margin-left:auto;margin-right:auto}
.cta-section .cta-button{background:#fff;color:var(--primary)}
.cta-section .cta-button:hover{background:#f0f0f0}

/* Responsive */
@media(max-width:768px){
  .nav{display:none}
  .nav.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:#fff;padding:20px;box-shadow:0 4px 6px rgba(0,0,0,.1);gap:16px}
  .hamburger{display:block}
  .hero h1{font-size:2.25rem}
  .hero p{font-size:1.125rem}
  .cta-button{display:block;margin-bottom:12px;width:100%}
  .cta-button.secondary{margin-left:0}
  .section-title h2{font-size:2rem}
  .article-item{grid-template-columns:1fr}
  .article-content{grid-template-columns:1fr}
  .article-aside{order:-1;margin-bottom:40px}
  .features-grid{grid-template-columns:1fr}
  .feature-card{flex-direction:column}
  .feature-card img{width:100%;height:200px}
  .categories-grid,.articles-grid{grid-template-columns:1fr}
  .data-bar{gap:32px}
  .data-item .num{font-size:2.25rem}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:60px 0}
}
@media(max-width:480px){
  .hero h1{font-size:1.875rem}
  .hero{padding:60px 20px;min-height:400px}
}