/* ===== 2026体育投注平台 - style.css ===== */
/* 版式原型：杂志分栏（多栏头条 + 细短讯） */
/* 配色：深灰(#1a1a1a) + 电光蓝(#0a84ff) + 浅灰(#f5f5f7) */
/* 字体：Geist系统回退；无emoji */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg: #f5f5f7;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #6b7280;
  --color-accent: #0a84ff;
  --color-accent-hover: #0066d9;
  --color-border: #e5e7eb;
  --color-dark: #1a1a1a;
  --color-dark-surface: #2d2d2f;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'SFMono-Regular', 'Consolas', monospace;
  --max-width: 1200px;
  --header-h: 64px;
}

html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-accent-hover); }
img { max-width: 100%; height: auto; display: block; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1rem; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-h);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--max-width); margin: 0 auto; padding: 0 1rem;
  height: var(--header-h);
}
.header-logo { display: flex; align-items: center; gap: 0.5rem; text-decoration: none; }
.header-logo img { height: 32px; width: auto; }
.header-logo span { font-size: 1.125rem; font-weight: 700; color: var(--color-dark); }
.main-nav { display: flex; align-items: center; gap: 2rem; }
.main-nav a {
  font-size: 0.875rem; font-weight: 500; color: var(--color-text-secondary);
  transition: color 0.2s; text-decoration: none;
}
.main-nav a:hover, .main-nav a.is-active { color: var(--color-accent); }

.nav-toggle {
  display: none; background: none; border: none;
  font-size: 1.5rem; color: var(--color-dark); cursor: pointer; padding: 0.25rem;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-dark); color: #9ca3af; padding: 3rem 0 2rem; margin-top: 4rem;
}
.footer-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 1rem;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem;
}
.footer-col h4 { color: #fff; font-size: 0.875rem; margin-bottom: 1rem; font-weight: 600; }
.footer-col a { display: block; font-size: 0.8125rem; color: #9ca3af; margin-bottom: 0.5rem; text-decoration: none; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  max-width: var(--max-width); margin: 2rem auto 0; padding: 1rem 1rem 0;
  border-top: 1px solid #374151; text-align: center; font-size: 0.8125rem;
}

/* ===== Home Page ===== */
.hero {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2f 100%);
  color: #fff; padding: 4rem 0; position: relative; overflow: hidden;
}
.hero::after {
  content: ''; position: absolute; top: -50%; right: -10%; width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(10,132,255,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 1rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; position: relative; z-index: 1;
}
.hero h1 { font-size: 2.5rem; font-weight: 800; line-height: 1.15; margin-bottom: 1rem; letter-spacing: -0.02em; }
.hero p { font-size: 1.125rem; color: #9ca3af; max-width: 500px; margin-bottom: 2rem; line-height: 1.7; }
.hero-cta { display: inline-flex; gap: 1rem; }
.btn-primary {
  display: inline-block; background: var(--color-accent); color: #fff;
  padding: 0.75rem 2rem; border-radius: 8px; font-weight: 600; font-size: 0.9375rem;
  transition: background 0.2s, transform 0.15s; text-decoration: none;
}
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); color: #fff; }
.btn-secondary {
  display: inline-block; background: transparent; color: #fff;
  padding: 0.75rem 2rem; border-radius: 8px; font-weight: 600; font-size: 0.9375rem;
  border: 1px solid rgba(255,255,255,0.3); transition: border-color 0.2s; text-decoration: none;
}
.btn-secondary:hover { border-color: var(--color-accent); color: #fff; }

/* ===== Section ===== */
.section { padding: 3rem 0; }
.section-title {
  font-size: 1.75rem; font-weight: 700; margin-bottom: 0.5rem; letter-spacing: -0.01em;
}
.section-subtitle { font-size: 1rem; color: var(--color-text-secondary); margin-bottom: 2rem; max-width: 600px; }

/* ===== Feature Cards ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.feature-card {
  background: var(--color-surface); border-radius: 12px; overflow: hidden;
  border: 1px solid var(--color-border); transition: box-shadow 0.2s;
}
.feature-card:hover { box-shadow: 0 4px 24px rgba(0,0,0,0.08); }
.feature-card img { width: 100%; height: 180px; object-fit: cover; }
.feature-card-body { padding: 1.25rem; }
.feature-card-body h3 { font-size: 1.0625rem; font-weight: 600; margin-bottom: 0.5rem; }
.feature-card-body p { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.6; }

/* ===== Trust / Stats Bar ===== */
.trust-bar {
  background: var(--color-surface); border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--color-border); }
.stat-item { background: var(--color-surface); padding: 2rem; text-align: center; }
.stat-num { font-size: 2rem; font-weight: 800; color: var(--color-accent); }
.stat-label { font-size: 0.875rem; color: var(--color-text-secondary); margin-top: 0.25rem; }

/* ===== Category/Article Lists ===== */
.category-list { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.category-card {
  background: var(--color-surface); border-radius: 12px; padding: 1.5rem;
  border: 1px solid var(--color-border); text-decoration: none; color: var(--color-text);
  transition: box-shadow 0.2s; display: flex; align-items: center; gap: 1rem;
}
.category-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.06); color: var(--color-text); }
.category-card-icon { width: 48px; height: 48px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.25rem; color: #fff; flex-shrink: 0; }

/* ===== Article Page ===== */
.article-layout {
  max-width: var(--max-width); margin: 0 auto; padding: 2rem 1rem;
  display: grid; grid-template-columns: 1fr 320px; gap: 2.5rem; align-items: start;
}
.article-body { min-width: 0; }
.article-body .breadcrumb {
  font-size: 0.8125rem; color: var(--color-text-secondary); margin-bottom: 1rem;
}
.article-body .breadcrumb a { color: var(--color-text-secondary); }
.article-body .breadcrumb a:hover { color: var(--color-accent); }
.article-body h1 { font-size: 2rem; font-weight: 800; margin-bottom: 0.5rem; line-height: 1.2; letter-spacing: -0.01em; }
.article-meta { font-size: 0.8125rem; color: var(--color-text-secondary); margin-bottom: 1.5rem; }
.article-hero-img { width: 100%; border-radius: 12px; margin-bottom: 1.5rem; max-height: 450px; object-fit: cover; }
.article-body h2 { font-size: 1.375rem; font-weight: 700; margin: 1.75rem 0 0.75rem; }
.article-body h3 { font-size: 1.125rem; font-weight: 600; margin: 1.5rem 0 0.5rem; }
.article-body p { margin-bottom: 1rem; color: #374151; line-height: 1.8; }
.article-body ul, .article-body ol { margin: 0 0 1rem 1.5rem; }
.article-body li { margin-bottom: 0.375rem; line-height: 1.7; color: #374151; }
.article-body .inline-img { margin: 1.5rem 0; border-radius: 10px; }
.article-body .figure-right { float: right; width: 45%; margin: 0.5rem 0 1rem 1.5rem; border-radius: 10px; }
.article-footer { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--color-border); }
.article-footer a { font-size: 0.875rem; }

/* ===== Sidebar / Aside ===== */
.article-aside { 
  background: var(--color-surface); border-radius: 12px; padding: 1.5rem;
  border: 1px solid var(--color-border); position: sticky; top: calc(var(--header-h) + 1rem);
}
.article-aside h3 { font-size: 1.0625rem; font-weight: 700; margin-bottom: 1rem; }
.article-aside-item {
  display: block; padding: 0.75rem 0; border-bottom: 1px solid var(--color-border);
  text-decoration: none; color: var(--color-text); font-size: 0.875rem; line-height: 1.5;
}
.article-aside-item:last-child { border-bottom: none; }
.article-aside-item:hover { color: var(--color-accent); }
.article-aside-item small { display: block; font-size: 0.75rem; color: var(--color-text-secondary); margin-top: 0.125rem; }

/* ===== Category / Listing Page ===== */
.category-header { margin-bottom: 2rem; }
.category-header h1 { font-size: 2rem; font-weight: 800; }
.category-header p { font-size: 1rem; color: var(--color-text-secondary); margin-top: 0.5rem; max-width: 600px; }
.article-list { display: flex; flex-direction: column; gap: 1.5rem; }
.article-list-item {
  display: grid; grid-template-columns: 280px 1fr; gap: 1.5rem;
  background: var(--color-surface); border-radius: 12px; overflow: hidden;
  border: 1px solid var(--color-border); text-decoration: none; color: var(--color-text);
  transition: box-shadow 0.2s;
}
.article-list-item:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.06); color: var(--color-text); }
.article-list-item img { width: 100%; height: 180px; object-fit: cover; }
.article-list-body { padding: 1.25rem 1.25rem 1.25rem 0; }
.article-list-body h2 { font-size: 1.125rem; font-weight: 600; margin-bottom: 0.5rem; }
.article-list-body p { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.6; }
.article-list-body .meta { font-size: 0.75rem; color: #9ca3af; margin-top: 0.5rem; }

/* ===== FAQ Section ===== */
.faq-list { display: flex; flex-direction: column; gap: 1rem; }
.faq-item { background: var(--color-surface); border-radius: 10px; padding: 1.25rem; border: 1px solid var(--color-border); }
.faq-item h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; }
.faq-item p { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.7; }

/* ===== Guide Cards ===== */
.guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.guide-card { background: var(--color-surface); border-radius: 12px; padding: 1.5rem; border: 1px solid var(--color-border); }
.guide-card h3 { font-size: 1.0625rem; font-weight: 600; margin-bottom: 0.75rem; }
.guide-card p { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.6; margin-bottom: 1rem; }
.guide-card a { font-size: 0.875rem; font-weight: 500; }

/* ===== CTA Section ===== */
.cta-section { background: var(--color-dark); color: #fff; text-align: center; padding: 4rem 0; }
.cta-section h2 { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; }
.cta-section p { font-size: 1.0625rem; color: #9ca3af; margin-bottom: 2rem; max-width: 500px; margin-left: auto; margin-right: auto; }

/* ===== Media Queries ===== */
@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.is-open { display: flex; flex-direction: column; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); padding: 1rem; gap: 1rem; border-bottom: 1px solid var(--color-border); }
  .nav-toggle { display: block; }

  .hero-inner { grid-template-columns: 1fr; gap: 1.5rem; text-align: center; }
  .hero h1 { font-size: 1.75rem; }
  .hero p { margin-left: auto; margin-right: auto; }
  .hero-cta { flex-direction: column; align-items: center; }

  .feature-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .category-list { grid-template-columns: 1fr; }
  .guide-grid { grid-template-columns: 1fr; }

  .article-layout { grid-template-columns: 1fr; }
  .article-body h1 { font-size: 1.5rem; }
  .article-body .figure-right { float: none; width: 100%; margin: 1rem 0; }
  .article-aside { position: static; margin-top: 2rem; }

  .article-list-item { grid-template-columns: 1fr; }
  .article-list-item img { height: 160px; }
  .article-list-body { padding: 1rem; }

  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero { padding: 2.5rem 0; }
  .section { padding: 2rem 0; }
}