/* roulang page: index */
:root {
            --primary: #1E40AF;
            --primary-hover: #1D4ED8;
            --secondary: #0EA5E9;
            --accent: #F59E0B;
            --bg-light: #F8FAFC;
            --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
            --card-shadow-hover: 0 12px 28px -4px rgba(37, 99, 235, 0.12);
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-light);
            color: #1E293B;
            overflow-x: hidden;
        }
        .card-transition {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-transition:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }
        .coupon-ticket {
            position: relative;
            background: linear-gradient(135deg, #1E40AF 0%, #2563EB 100%);
        }
        .coupon-ticket::before, .coupon-ticket::after {
            content: '';
            position: absolute;
            top: 50%;
            width: 20px;
            height: 20px;
            background-color: #F8FAFC;
            border-radius: 50%;
            transform: translateY(-50%);
        }
        .coupon-ticket::before { left: -10px; }
        .coupon-ticket::after { right: -10px; }
        .tab-btn.active {
            color: #1E40AF;
            border-bottom: 2px solid #1E40AF;
            font-weight: 600;
        }