:root{--page-bg:#f5f7fb;--surface:#ffffff;--surface-strong:#0f172a;--accent-usa:#0a2540;--accent-mex:#006847;--accent-can:#da291c;--accent-gold:#d4af37;--text-main:#1e293b;--text-muted:#64748b;--border:#e2e8f0;--card-shadow:0 4px 20px rgba(15,23,42,0.05);--transition:all 0.3s ease}body{background-color:var(--page-bg);color:var(--text-main);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;overflow-x:hidden;line-height:1.6}.custom-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:var(--card-shadow);transition:var(--transition);overflow:hidden}.custom-card:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(15,23,42,0.1)}.section-padding{padding:80px 0}.section-title{font-weight:800;letter-spacing:-0.5px;margin-bottom:40px;position:relative;display:inline-block}.section-title::after{content:'';position:absolute;left:0;bottom:-8px;width:48px;height:4px;background:linear-gradient(90deg,var(--accent-can),var(--accent-usa));border-radius:2px}header{background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.navbar-brand img{max-height:45px}.nav-link{font-weight:600;color:var(--text-main) !important;transition:var(--transition)}.nav-link:hover{color:var(--accent-can) !important}.hero-section{padding:120px 0 80px 0;background:radial-gradient(circle at top right,rgba(10,37,64,0.05),transparent),var(--surface);border-bottom:1px solid var(--border)}.hero-title{font-size:3rem;font-weight:900;line-height:1.2;color:var(--accent-usa)}.hero-title span{color:var(--accent-can)}.hero-img-wrapper{position:relative;border-radius:14px;overflow:hidden;box-shadow:0 20px 40px rgba(0,0,0,0.15)}.hero-img-wrapper img{width:100%;height:auto;object-fit:cover}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}.stat-item{padding:24px;background:var(--surface);border-left:4px solid var(--accent-usa)}.stat-item.can{border-left-color:var(--accent-can)}.stat-item.mex{border-left-color:var(--accent-mex)}.score-board-wrapper{background:var(--surface-strong);color:#ffffff;border-radius:14px;padding:30px}.match-card{background:rgba(255,255,255,0.08);border-radius:8px;padding:20px;margin-bottom:15px;border:1px solid rgba(255,255,255,0.1)}.match-status{font-size:0.75rem;background:var(--accent-gold);color:var(--surface-strong);padding:2px 8px;border-radius:4px;font-weight:bold}.group-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}.group-card{background:var(--surface);border:1px solid var(--border);border-radius:8px}.group-header{background:var(--accent-usa);color:white;padding:12px;font-weight:bold;border-top-left-radius:7px;border-top-right-radius:7px}.group-header.alt-bg{background:var(--accent-mex)}.table-responsive-wrapper{position:relative}.table-responsive-wrapper::after{content:'滑动查看完整表格 →';display:none;position:absolute;right:10px;bottom:-25px;font-size:11px;color:var(--text-muted)}@media (max-width:768px){.table-responsive-wrapper::after{display:block}}.faq-item{margin-bottom:15px}.faq-button{width:100%;text-align:left;background:var(--surface);border:1px solid var(--border);padding:20px;border-radius:8px;font-weight:600;display:flex;justify-content:space-between;align-items:center}.faq-button:not(.collapsed){background:rgba(10,37,64,0.02);border-color:var(--accent-usa);color:var(--accent-usa)}footer{background-color:var(--surface-strong);color:rgba(255,255,255,0.7);padding:60px 0 30px;font-size:0.9rem}footer a{color:rgba(255,255,255,0.8);text-decoration:none}footer a:hover{color:#ffffff}