body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
            min-height: 100vh;
        }
        .glass-card {
            background: rgba(30, 41, 59, 0.7);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(148, 163, 184, 0.1);
        }
        .heat-cell { transition: all 0.15s ease; }
        .heat-cell:hover { transform: scale(1.15); z-index: 10; box-shadow: 0 0 0 2px #fff; }
        /* Top-agent ranking (gold / silver / bronze) — name cell shimmer + glow + crown pulse */
        @keyframes rankShine { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
        @keyframes crownPulse { 0%, 100% { transform: scale(1); filter: drop-shadow(0 0 0 transparent); } 50% { transform: scale(1.18); } }
        .rank-cell { background-size: 200% 100% !important; animation: rankShine 4s linear infinite; }
        .rank-gold   { background-image: linear-gradient(90deg, rgba(245,158,11,.10), rgba(245,158,11,.40), rgba(245,158,11,.10)) !important; border-left: 3px solid #f59e0b; box-shadow: inset 0 0 12px rgba(245,158,11,.25); }
        .rank-silver { background-image: linear-gradient(90deg, rgba(203,213,225,.10), rgba(203,213,225,.38), rgba(203,213,225,.10)) !important; border-left: 3px solid #cbd5e1; box-shadow: inset 0 0 12px rgba(203,213,225,.22); }
        .rank-bronze { background-image: linear-gradient(90deg, rgba(180,83,9,.12), rgba(217,119,6,.40), rgba(180,83,9,.12)) !important; border-left: 3px solid #d97706; box-shadow: inset 0 0 12px rgba(217,119,6,.22); }
        .crown { animation: crownPulse 1.8s ease-in-out infinite; }
        .crown-gold { color: #fbbf24; } .crown-silver { color: #e2e8f0; } .crown-bronze { color: #f59e42; }
        @keyframes rankSlotGlow { 0%, 100% { box-shadow: inset 0 0 0 rgba(255,255,255,0); } 50% { box-shadow: inset 0 0 7px rgba(255,255,255,.55); } }
        .rank-slot { animation: rankSlotGlow 2s ease-in-out infinite; }
        ::-webkit-scrollbar { height: 10px; width: 10px; }
        ::-webkit-scrollbar-track { background: rgba(15,23,42,0.5); }
        ::-webkit-scrollbar-thumb { background: #475569; border-radius: 5px; }