/* roulang page: index */
:root {
            --primary-bg: #F8FAFC;
            --surface-bg: #FFFFFF;
            --text-main: #0F172A;
            --text-muted: #334155;
            --text-sub: #64748B;
            --border-light: #E2E8F0;
            --accent-green: #10B981;
            --brand-navy: #0B192C;
        }

        *, *::before, *::after {
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            background-color: var(--primary-bg);
            color: var(--text-main);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        .scroll-mt-header {
            scroll-margin-top: 104px;
        }

        .tabular-numbers {
            font-variant-numeric: tabular-nums;
            font-feature-settings: "tnum";
        }

        /* 呼吸绿灯指示动画 */
        @keyframes pulse-dot {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.3); opacity: 0.5; }
        }
        .pulse-active {
            animation: pulse-dot 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
        }

        /* 交互微动效 */
        .card-hover-lift {
            transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease;
        }
        .card-hover-lift:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px -4px rgba(15, 23, 42, 0.1);
            border-color: #CBD5E1;
        }

        /* 手风琴状态过渡 */
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
        }
        .faq-item.active .faq-content {
            max-height: 250px;
            padding-top: 0.75rem;
        }
        .faq-item.active .faq-chevron {
            transform: rotate(180deg);
        }

        /* 优惠券装饰凹槽效果 */
        .ticket-notch-left, .ticket-notch-right {
            position: absolute;
            top: 50%;
            width: 16px;
            height: 16px;
            background-color: #F8FAFC;
            border-radius: 9999px;
            transform: translateY(-50%);
        }
        .ticket-notch-left { left: -8px; }
        .ticket-notch-right { right: -8px; }