/* ===== 全局重置与变量 ===== */
:root {
  --primary: #1a56db;
  --primary-dark: #1240a8;
  --accent: #f97316;
  --accent-dark: #ea6c0a;
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-card2: #162032;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #334155;
  --white: #ffffff;
  --red: #ef4444;
  --green: #22c55e;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,0.35);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ===== 容器 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 60px 0; }
.section-title {
  font-size: 1.75rem; font-weight: 700; color: var(--white);
  margin-bottom: 8px;
}
.section-title span { color: var(--accent); }
.section-sub { color: var(--text-muted); margin-bottom: 36px; font-size: 0.95rem; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.view-all { color: var(--accent); font-size: 0.9rem; font-weight: 500; transition: opacity .2s; }
.view-all:hover { opacity: .75; }

/* ===== 顶部导航 ===== */
.navbar {
  position: sticky; top: 0; z-index: 999;
  background: rgba(15,23,42,0.97);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}
.navbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
  width: 38px; height: 38px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 1.1rem; color: #fff; letter-spacing: -1px;
}
.logo-text { font-size: 1.15rem; font-weight: 700; color: var(--white); }
.logo-text span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 6px 14px; border-radius: 6px;
  font-size: 0.9rem; font-weight: 500; color: var(--text-muted);
  transition: all .2s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--white); background: rgba(255,255,255,0.08);
}
.nav-links a.active { color: var(--accent); }
.nav-cta {
  display: flex; align-items: center; gap: 8px;
}
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 20px; border-radius: 8px; font-size: 0.9rem;
  font-weight: 600; cursor: pointer; border: none; transition: all .2s;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-outline {
  background: transparent; color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 12px 28px; font-size: 1rem; border-radius: 10px; }
.btn-sm { padding: 5px 14px; font-size: 0.82rem; }
/* 汉堡菜单 */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all .3s; }
.mobile-menu {
  display: none; flex-direction: column; gap: 4px;
  padding: 12px 0; border-top: 1px solid var(--border);
}
.mobile-menu a {
  padding: 10px 16px; border-radius: 6px; font-size: 0.95rem;
  color: var(--text-muted); transition: all .2s;
}
.mobile-menu a:hover, .mobile-menu a.active { color: var(--white); background: rgba(255,255,255,0.07); }
.mobile-menu.open { display: flex; }

/* ===== Hero Banner ===== */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0a1628 0%, #0f2040 50%, #0a1628 100%);
  padding: 80px 0 70px;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(26,86,219,0.18) 0%, transparent 65%),
              radial-gradient(ellipse at 20% 80%, rgba(249,115,22,0.12) 0%, transparent 55%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(249,115,22,0.15); border: 1px solid rgba(249,115,22,0.35);
  color: var(--accent); padding: 5px 14px; border-radius: 20px;
  font-size: 0.82rem; font-weight: 600; margin-bottom: 20px;
}
.hero-badge::before { content: '●'; font-size: 0.5rem; animation: blink 1.2s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }
.hero h1 {
  font-size: 2.6rem; font-weight: 800; line-height: 1.2;
  color: var(--white); margin-bottom: 18px;
}
.hero h1 span { color: var(--accent); }
.hero-desc { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 32px; line-height: 1.7; }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 28px; margin-top: 36px; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat-num { font-size: 1.6rem; font-weight: 800; color: var(--white); }
.hero-stat-num span { color: var(--accent); }
.hero-stat-label { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; }
.hero-visual {
  display: flex; justify-content: center; align-items: center;
}
.hero-card-stack { position: relative; width: 100%; max-width: 360px; margin: 0 auto; }
.hero-phone-mock {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 20px; padding: 20px; box-shadow: var(--shadow);
}
.mock-header { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.mock-dot { width: 10px; height: 10px; border-radius: 50%; }
.mock-score-row {
  background: var(--bg-card2); border-radius: 8px; padding: 12px 14px;
  margin-bottom: 10px; display: flex; align-items: center; justify-content: space-between;
}
.mock-team { font-size: 0.85rem; font-weight: 600; }
.mock-score { font-size: 1.1rem; font-weight: 800; color: var(--accent); }
.mock-live { font-size: 0.7rem; background: var(--red); color: #fff; padding: 2px 7px; border-radius: 4px; animation: blink 1.2s infinite; }

/* ===== 卡片通用 ===== */
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; transition: all .25s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: rgba(26,86,219,0.4); }
.card-body { padding: 18px; }
.card-img { width: 100%; height: 180px; object-fit: cover; background: var(--bg-card2); }
.card-img-placeholder {
  width: 100%; height: 180px;
  background: linear-gradient(135deg, var(--bg-card2), var(--bg-card));
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem;
}

/* ===== 网格布局 ===== */
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }

/* ===== 标签/徽章 ===== */
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 0.75rem; font-weight: 600;
}
.badge-live { background: rgba(239,68,68,0.15); color: var(--red); border: 1px solid rgba(239,68,68,0.3); }
.badge-upcoming { background: rgba(26,86,219,0.15); color: #60a5fa; border: 1px solid rgba(26,86,219,0.3); }
.badge-finished { background: rgba(148,163,184,0.1); color: var(--text-muted); border: 1px solid var(--border); }
.badge-cat { background: rgba(249,115,22,0.12); color: var(--accent); border: 1px solid rgba(249,115,22,0.25); }
.live-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--red); margin-right: 4px; animation: blink 1.2s infinite; }

/* ===== 赛事卡片 ===== */
.match-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; transition: all .25s;
  border-left: 3px solid transparent;
}
.match-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.match-card.live { border-left-color: var(--red); }
.match-card.upcoming { border-left-color: var(--primary); }
.match-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.match-league { font-size: 0.78rem; color: var(--text-muted); }
.match-teams { display: grid; grid-template-columns: 1fr auto 1fr; gap: 8px; align-items: center; text-align: center; }
.match-team-name { font-size: 0.88rem; font-weight: 600; }
.match-score { font-size: 1.5rem; font-weight: 800; color: var(--accent); }
.match-vs { font-size: 0.8rem; color: var(--text-muted); }

/* ===== 新闻卡片 ===== */
.news-card { display: flex; flex-direction: column; }
.news-card .card-body { flex: 1; display: flex; flex-direction: column; }
.news-title { font-size: 0.95rem; font-weight: 600; color: var(--white); margin: 8px 0; line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-excerpt { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.news-meta { display: flex; align-items: center; justify-content: space-between; margin-top: 12px; font-size: 0.78rem; color: var(--text-muted); }
.news-read-more { color: var(--accent); font-size: 0.82rem; font-weight: 500; margin-top: 10px; display: inline-flex; align-items: center; gap: 4px; transition: gap .2s; }
.news-read-more:hover { gap: 8px; }

/* ===== 运动分类 ===== */
.sport-grid { display: grid; grid-template-columns: repeat(6,1fr); gap: 12px; }
.sport-item {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 10px; text-align: center;
  cursor: pointer; transition: all .25s;
}
.sport-item:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: var(--shadow); }
.sport-icon { font-size: 2rem; margin-bottom: 8px; }
.sport-name { font-size: 0.82rem; font-weight: 600; color: var(--text); }
.sport-count { font-size: 0.72rem; color: var(--text-muted); margin-top: 2px; }

/* ===== 统计条 ===== */
.stats-bar {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-radius: var(--radius); padding: 36px 40px;
}
.stats-bar-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; text-align: center; }
.stat-num { font-size: 2rem; font-weight: 800; color: var(--white); }
.stat-num span { color: #fbbf24; }
.stat-label { font-size: 0.82rem; color: rgba(255,255,255,0.7); margin-top: 4px; }

/* ===== 页面 Banner（内页用）===== */
.page-banner {
  background: linear-gradient(135deg, #0a1628, #0f2040);
  padding: 48px 0 40px; border-bottom: 1px solid var(--border);
}
.page-banner h1 { font-size: 2rem; font-weight: 800; color: var(--white); margin-bottom: 8px; }
.page-banner h1 span { color: var(--accent); }
.page-banner p { color: var(--text-muted); font-size: 0.95rem; }
.breadcrumb { display: flex; align-items: center; gap: 6px; font-size: 0.82rem; color: var(--text-muted); margin-bottom: 14px; }
.breadcrumb a { color: var(--text-muted); transition: color .2s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: var(--border); }

/* ===== 筛选 Tab ===== */
.filter-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.filter-tab {
  padding: 6px 18px; border-radius: 20px; font-size: 0.85rem; font-weight: 500;
  cursor: pointer; border: 1px solid var(--border); color: var(--text-muted);
  background: transparent; transition: all .2s;
}
.filter-tab:hover { border-color: var(--accent); color: var(--accent); }
.filter-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ===== 下载区域 ===== */
.download-section {
  background: linear-gradient(135deg, #0a1628, #0f2040);
  border-radius: 16px; padding: 48px 40px;
  border: 1px solid var(--border);
}
.download-platforms { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; margin-top: 28px; }
.download-btn {
  display: flex; align-items: center; gap: 14px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 20px; cursor: pointer; transition: all .25s;
}
.download-btn:hover { border-color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow); }
.download-btn-icon { font-size: 2rem; }
.download-btn-text strong { display: block; font-size: 0.95rem; color: var(--white); }
.download-btn-text span { font-size: 0.78rem; color: var(--text-muted); }
.qr-box { text-align: center; }
.qr-placeholder {
  width: 140px; height: 140px; border-radius: 12px;
  background: var(--bg-card); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem; margin: 0 auto 10px;
}
.qr-label { font-size: 0.82rem; color: var(--text-muted); }

/* ===== FAQ ===== */
.faq-item { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 10px; overflow: hidden; }
.faq-q {
  padding: 16px 20px; font-size: 0.95rem; font-weight: 600; color: var(--white);
  cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  background: var(--bg-card); transition: background .2s;
}
.faq-q:hover { background: var(--bg-card2); }
.faq-q::after { content: '+'; font-size: 1.2rem; color: var(--accent); transition: transform .3s; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { display: none; padding: 14px 20px; font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; background: var(--bg-card2); border-top: 1px solid var(--border); }
.faq-item.open .faq-a { display: block; }

/* ===== 新闻详情 ===== */
.article-body { max-width: 800px; }
.article-body h2 { font-size: 1.3rem; color: var(--white); margin: 28px 0 12px; }
.article-body p { color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; font-size: 0.95rem; }
.article-body ul { padding-left: 20px; margin-bottom: 16px; }
.article-body ul li { color: var(--text-muted); font-size: 0.95rem; line-height: 1.8; list-style: disc; }
.article-meta { display: flex; align-items: center; gap: 16px; margin: 16px 0 28px; font-size: 0.82rem; color: var(--text-muted); }
.article-meta span { display: flex; align-items: center; gap: 4px; }

/* ===== 关于页 ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.about-feature-list { display: flex; flex-direction: column; gap: 16px; margin-top: 24px; }
.about-feature {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
}
.about-feature-icon { font-size: 1.6rem; flex-shrink: 0; }
.about-feature h4 { font-size: 0.95rem; font-weight: 600; color: var(--white); margin-bottom: 4px; }
.about-feature p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }
.partner-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
.partner-item {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; text-align: center;
  font-size: 0.85rem; font-weight: 600; color: var(--text-muted);
  transition: all .25s;
}
.partner-item:hover { border-color: var(--primary); color: var(--white); }

/* ===== 页脚 ===== */
footer {
  background: #080f1e; border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 36px; }
.footer-brand p { color: var(--text-muted); font-size: 0.85rem; line-height: 1.7; margin-top: 12px; }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; color: var(--white); margin-bottom: 14px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 0.85rem; color: var(--text-muted); transition: color .2s; }
.footer-col ul li a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 20px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.8rem; color: var(--text-muted); flex-wrap: wrap; gap: 10px;
}
.footer-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.footer-tag {
  padding: 2px 8px; border-radius: 4px;
  background: rgba(255,255,255,0.05); font-size: 0.72rem; color: var(--text-muted);
}

/* ===== 侧边栏 ===== */
.sidebar { display: flex; flex-direction: column; gap: 20px; }
.sidebar-widget { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.sidebar-widget h3 { font-size: 0.95rem; font-weight: 700; color: var(--white); margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.sidebar-news-item { display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.sidebar-news-item:last-child { border-bottom: none; }
.sidebar-news-num { font-size: 1.1rem; font-weight: 800; color: var(--border); flex-shrink: 0; width: 24px; }
.sidebar-news-title { font-size: 0.82rem; color: var(--text-muted); line-height: 1.45; transition: color .2s; }
.sidebar-news-title:hover { color: var(--accent); }
.hot-tag { display: inline-block; padding: 4px 10px; margin: 4px; border-radius: 4px; font-size: 0.78rem; background: rgba(255,255,255,0.05); color: var(--text-muted); border: 1px solid var(--border); transition: all .2s; cursor: pointer; }
.hot-tag:hover { border-color: var(--accent); color: var(--accent); }

/* ===== 分页 ===== */
.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 36px; }
.page-btn {
  width: 36px; height: 36px; border-radius: 6px; display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; font-weight: 500; cursor: pointer; border: 1px solid var(--border);
  color: var(--text-muted); background: var(--bg-card); transition: all .2s;
}
.page-btn:hover, .page-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .sport-grid { grid-template-columns: repeat(4,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-bar-grid { grid-template-columns: repeat(2,1fr); }
  .partner-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero h1 { font-size: 1.9rem; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .sport-grid { grid-template-columns: repeat(3,1fr); }
  .nav-links { display: none; }
  .nav-cta .btn:not(.btn-accent) { display: none; }
  .hamburger { display: flex; }
  .download-platforms { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 40px 0; }
  .section-title { font-size: 1.4rem; }
  .stats-bar { padding: 24px 20px; }
  .download-section { padding: 28px 20px; }
  .page-banner { padding: 32px 0 24px; }
  .page-banner h1 { font-size: 1.5rem; }
}
@media (max-width: 480px) {
  .sport-grid { grid-template-columns: repeat(3,1fr); }
  .hero-stats { gap: 16px; }
  .hero h1 { font-size: 1.6rem; }
  .stats-bar-grid { grid-template-columns: repeat(2,1fr); }
}

/* ===== 内页补充样式 ===== */
/* 功能特色卡片 */
.feature-card { padding: 28px; text-align: center; }
.feature-icon { font-size: 2.4rem; margin-bottom: 14px; }
.feature-title { font-size: 0.95rem; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.feature-desc { font-size: 0.83rem; color: var(--text-muted); line-height: 1.7; }

/* 新闻详情文章样式补充 */
.article-body h2 {
  font-size: 1.15rem; font-weight: 700; color: var(--white);
  margin: 28px 0 12px; padding-left: 12px;
  border-left: 3px solid var(--accent);
}
.article-body p { margin-bottom: 14px; font-size: 0.9rem; color: var(--text-muted); line-height: 1.85; }
.article-body ul { margin: 12px 0 14px 20px; list-style: disc; }
.article-body ul li { margin-bottom: 6px; font-size: 0.88rem; color: var(--text-muted); }

/* 新闻列表页侧边栏布局 */
@media (max-width: 900px) {
  div[style*="grid-template-columns:1fr 300px"],
  div[style*="grid-template-columns: 1fr 300px"] {
    display: block !important;
  }
  .sidebar { margin-top: 32px; }
}

/* 关于页发展历程 */
.timeline-item { position: relative; padding-left: 28px; padding-bottom: 28px; border-left: 2px solid var(--primary); margin-left: 12px; }
.timeline-dot { position: absolute; left: -9px; top: 0; width: 16px; height: 16px; border-radius: 50%; background: var(--primary); border: 2px solid var(--bg); }
.timeline-year { font-size: 0.8rem; color: var(--accent); font-weight: 700; margin-bottom: 4px; }
.timeline-title { font-size: 0.92rem; font-weight: 700; color: var(--white); margin-bottom: 6px; }
.timeline-desc { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }

/* 移动端下载页双列变单列 */
@media (max-width: 600px) {
  div[style*="grid-template-columns:1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }
}