/* roulang page: index */
:root {
            --primary: #1A365D;
            --accent: #C59B27;
            --bg-light: #F8FAFC;
            --bg-dark: #0F172A;
            --text-main: #1E293B;
            --text-muted: #64748B;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
        }
        .coupon-notch-left, .coupon-notch-right {
            position: absolute;
            top: 50%;
            width: 16px;
            height: 16px;
            background-color: var(--bg-light);
            border-radius: 50%;
            transform: translateY(-50%);
        }
        .coupon-notch-left { left: -8px; }
        .coupon-notch-right { right: -8px; }
        .accordion-content {
            transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
        }
        .accordion-item.active .accordion-content {
            max-height: 250px;
            opacity: 1;
        }
        .accordion-item.active .chevron-icon {
            transform: rotate(180deg);
        }