.commission-breakdown {
            background: #f8fafc;
            border-radius: 12px;
            padding: 1.2rem;
            margin-top: 1rem;
            border: 1px solid #e2e8f0;
        }
        .tier-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: flex-end;
            margin-bottom: 1rem;
            background: white;
            padding: 0.8rem;
            border-radius: 12px;
            box-shadow: 0 1px 2px rgba(0,0,0,0.05);
        }
        .tier-input-group {
            flex: 1;
            min-width: 140px;
        }
        .badge-tier {
            background-color: #e9ecef;
            color: #1e466e;
            font-weight: 500;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.85rem;
        }
        .effective-rate-badge {
            background: #d1e7ff;
            color: #004085;
            font-size: 1.2rem;
            padding: 0.4rem 1rem;
            border-radius: 40px;
            display: inline-block;
        }
        .result-card {
            background: white;
            border-radius: 20px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.05);
            padding: 1.5rem;
            margin-bottom: 1rem;
        }
        .inline-icon {
            margin-right: 6px;
        }
        .commission-table th {
            background-color: #eef2f7;
        }
        .tool-header h1 {
            font-size: 2.2rem;
        }
        @media (max-width: 768px) {
            .tier-row { flex-direction: column; gap: 0.7rem; }
        }