:root{--primary-rgb:15,23,42;--primary-color:#0f172a;--accent-color:#0284c7;--accent-hover:#0369a1;--accent-light:#e0f2fe;--bg-main:#f8fafc;--bg-card:#ffffff;--text-main:#0f172a;--text-muted:#475569;--border-color:#e2e8f0;--usa-blue:#0a2540;--mex-green:#006847;--can-red:#da291c}body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background-color:var(--bg-main);color:var(--text-main);overflow-x:hidden;line-height:1.6}.navbar{background-color:rgba(15,23,42,0.95);backdrop-filter:blur(10px);border-bottom:2px solid var(--accent-color);padding:0.75rem 1rem}.navbar-brand img{max-height:40px;object-fit:contain}.navbar-brand span{font-weight:800;letter-spacing:0.5px;color:#ffffff}.nav-link{color:#cbd5e1 !important;font-weight:500;transition:color 0.3s ease}.nav-link:hover,.nav-link.active{color:#ffffff !important;text-shadow:0 0 8px rgba(2,132,199,0.6)}.hero-section{background:linear-gradient(135deg,rgba(15,23,42,0.95) 0%,rgba(30,41,59,0.9) 100%),url('https://worldcup-infogo.com.cn/skin/cover/worldcupinfogocomcn/worldcupinfogocomcnhero-307.webp') no-repeat center center/cover;padding:120px 0 80px;color:#ffffff;position:relative}.hero-badge{background:linear-gradient(90deg,var(--usa-blue),var(--mex-green),var(--can-red));padding:6px 16px;border-radius:50px;display:inline-flex;align-items:center;font-weight:600;font-size:0.85rem;box-shadow:0 4px 15px rgba(0,0,0,0.2)}.hero-img{border-radius:12px;box-shadow:0 20px 40px rgba(0,0,0,0.4);border:4px solid rgba(255,255,255,0.1)}.section-title{position:relative;padding-bottom:12px;margin-bottom:30px;font-weight:700;color:var(--primary-color)}.section-title::after{content:'';position:absolute;left:0;bottom:0;width:60px;height:4px;background:linear-gradient(90deg,var(--accent-color),var(--can-red));border-radius:2px}.custom-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;box-shadow:0 4px 6px -1px rgba(0,0,0,0.05),0 2px 4px -1px rgba(0,0,0,0.03);transition:transform 0.3s ease,box-shadow 0.3s ease}.custom-card:hover{transform:translateY(-5px);box-shadow:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05)}.score-row{background:#f1f5f9;border-radius:8px;transition:background-color 0.2s}.score-row:hover{background:#e2e8f0}.team-flag{width:24px;height:16px;object-fit:cover;border-radius:2px}.badge-live{background-color:var(--can-red);color:#fff;animation:pulse 1.5s infinite}.group-card{border-top:4px solid var(--accent-color)}.group-header{background:linear-gradient(135deg,var(--primary-color) 0%,#1e293b 100%);color:white;padding:10px 15px;font-weight:bold;border-top-left-radius:8px;border-top-right-radius:8px}.group-table th{font-size:0.75rem;color:var(--text-muted)}.group-table td{font-size:0.85rem;padding:8px 12px;vertical-align:middle}.accordion-button:not(.collapsed){background-color:var(--accent-light);color:var(--accent-color)}.guide-box{background:radial-gradient(circle at top right,rgba(2,132,199,0.08) 0%,rgba(255,255,255,0) 70%);border-left:4px solid var(--accent-color)}@keyframes pulse{0%{opacity:1}50%{opacity:0.5}100%{opacity:1}}@media (max-width:991.98px){.hero-section{padding:100px 0 60px;text-align:center}.hero-badge{margin-bottom:15px}.section-title::after{left:50%;transform:translateX(-50%)}.section-title{text-align:center}}