:root {
            --primary: #2B6FF2;
            --dark: #1E2A3A;
            --gray: #6E7B8C;
            --border: #DCE3EC;
            --bg: #F5F8FC;
            --radius: 16px;
        }

        * { margin:0; padding:0; box-sizing:border-box; font-family: system-ui, sans-serif; }
        body { background: var(--bg); color: var(--dark); }

        .topnav { background: white; border-bottom: 2px solid var(--border); position: sticky; top: 0; z-index: 1000; padding: 0 2rem; height: 64px; display: flex; align-items: center; justify-content: space-between; }
        .topnav a { text-decoration: none; color: var(--dark); font-weight: 600; }
        .topnav-links { display: flex; gap: 2rem; }
        .topnav-links a { font-size: 15px; padding-bottom: 4px; border-bottom: 2px solid transparent; }
        .topnav-links a:hover, .topnav-links a.active { color: var(--primary); border-bottom-color: var(--primary); }

        .hero { background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%); color: white; text-align: center; padding: 60px 2rem 40px; }
        .hero h1 { font-size: 36px; font-weight: 800; margin-bottom: 12px; }
        .hero p { font-size: 18px; opacity: 0.9; max-width: 600px; margin: 0 auto; }
        .hero-stats { display: flex; justify-content: center; gap: 60px; margin-top: 30px; }
        .hero-stat-item { text-align: center; }
        .hero-stat-value { font-size: 28px; font-weight: 700; }
        .hero-stat-label { font-size: 14px; opacity: 0.8; }

        .container { max-width: 1000px; margin: 0 auto; padding: 40px 2rem 80px; }

        .podium-section { margin-bottom: 50px; }
        .podium-title { text-align: center; font-size: 24px; font-weight: 700; margin-bottom: 30px; }
        .podium-container { display: flex; justify-content: center; align-items: flex-end; gap: 30px; padding: 40px; background: white; border-radius: var(--radius); border: 2px solid var(--border); }
        .podium-item { display: flex; flex-direction: column; align-items: center; }
        .podium-stand { width: 120px; border-radius: 8px 8px 0 0; display: flex; align-items: flex-end; justify-content: center; padding-bottom: 20px; }
        .podium-1 { height: 240px; background: linear-gradient(180deg, #FFD700 0%, #FFA500 100%); }
        .podium-2 { height: 200px; background: linear-gradient(180deg, #C0C0C0 0%, #A0A0A0 100%); }
        .podium-3 { height: 160px; background: linear-gradient(180deg, #CD7F32 0%, #B87333 100%); }
        .podium-avatar { width: 70px; height: 70px; border-radius: 50%; border: 3px solid white; object-fit: cover; }
        .podium-name { margin-top: 15px; font-weight: 600; text-align: center; }
        .podium-amount { color: #ff6b6b; font-weight: 700; font-size: 16px; }
        .podium-rank { position: absolute; top: -10px; left: 50%; transform: translateX(-50%); width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; font-weight: 700; font-size: 18px; }
        .podium-rank-1 { background: #FFD700; }
        .podium-rank-2 { background: #C0C0C0; }
        .podium-rank-3 { background: #CD7F32; }

        .ranking-section { background: white; border-radius: var(--radius); border: 2px solid var(--border); padding: 30px; }
        .ranking-title { font-size: 22px; font-weight: 700; margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
        .ranking-list { display: flex; flex-direction: column; gap: 15px; }
        .ranking-item { display: flex; align-items: center; gap: 15px; padding: 15px; background: var(--bg); border-radius: 12px; transition: 0.2s; }
        .ranking-item:hover { background: #EBF2FF; }
        .ranking-rank { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; }
        .ranking-rank-top { background: #FFD700; color: #8B4513; }
        .ranking-rank-other { background: #E5E7EB; color: #6B7280; }
        .ranking-avatar { width: 50px; height: 50px; border-radius: 50%; object-fit: cover; }
        .ranking-info { flex: 1; }
        .ranking-name { font-weight: 600; }
        .ranking-desc { font-size: 13px; color: var(--gray); margin-top: 2px; }
        .ranking-amount { color: #ff6b6b; font-weight: 700; font-size: 16px; }
        .ranking-date { font-size: 12px; color: #9CA3AF; }

        .bottom-line {
            text-align: center;
            padding: 30px;
            color: #9CA3AF;
            font-size: 15px;
            display: none;
        }

        .empty-state { text-align: center; padding: 60px; color: var(--gray); }
        .empty-state i { font-size: 48px; color: #ff6b6b; margin-bottom: 20px; }

        .mobile-nav { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: white; border-top: 2px solid var(--border); z-index: 999; padding: 8px 0 12px; justify-content: space-around; }
        .mobile-nav a { flex-direction: column; align-items: center; text-decoration: none; color: var(--gray); font-size: 12px; display: flex; gap: 4px; }
        .mobile-nav a.active { color: var(--primary); }

        .footer { background: #1E2A3A; color: #B0BEC5; text-align: center; padding: 30px 30px 90px; margin-top: 60px; }

        @media (max-width: 768px) {
            .topnav { justify-content: center; }
            .topnav-links { display: none; }
            .mobile-nav { display: flex; }
            .hero { padding: 40px 1.5rem 30px; }
            .hero h1 { font-size: 28px; }
            .hero-stats { gap: 30px; }
            .hero-stat-value { font-size: 22px; }
            .container { padding: 30px 1rem 100px; }
            .podium-container { gap: 15px; padding: 20px; }
            .podium-stand { width: 90px; }
            .podium-avatar { width: 50px; height: 50px; }
            .podium-name { font-size: 14px; }
            .ranking-item { flex-wrap: wrap; }
            .ranking-info { width: calc(100% - 120px); }
            .footer { padding-bottom: 100px; }
        }