/* roulang page: index */
:root {
            --primary: #4F46E5;
            --primary-focus: #3730A3;
            --accent: #06B6D4;
            --growth: #10B981;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: rgba(226, 232, 240, 0.8);
            --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
            --card-hover-shadow: 0 20px 25px -5px rgba(79, 70, 229, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }

        body {
            color: var(--text-body);
            line-height: 1.75;
            font-feature-settings: "cv02", "cv03", "cv04", "cv11";
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-main);
            letter-spacing: -0.02em;
        }

        .custom-card-shadow {
            box-shadow: var(--card-shadow);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .custom-card-shadow:hover {
            box-shadow: var(--card-hover-shadow);
            transform: translateY(-4px);
        }

        .hero-pattern {
            background-image: radial-gradient(rgba(79, 70, 229, 0.12) 1px, transparent 1px);
            background-size: 24px 24px;
        }

        .glass-nav {
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        /* 优惠券虚线边框效果 */
        .coupon-cutout {
            position: relative;
            background: #ffffff;
        }
        .coupon-cutout::before, .coupon-cutout::after {
            content: '';
            position: absolute;
            top: 50%;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: #F8FAFC;
            transform: translateY(-50%);
        }
        .coupon-cutout::before { left: -10px; }
        .coupon-cutout::after { right: -10px; }