/* roulang page: index */
:root {
            --primary: #0A84FF;
            --secondary: #2ED573;
            --accent: #FF7A00;
            --dark-base: #0D111A;
            --text-main: #1D2129;
            --text-sub: #4E5969;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: #F8F9FC;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        .hero-bg-cover {
            background-image: linear-gradient(rgba(13, 17, 26, 0.88), rgba(13, 17, 26, 0.94)), url('/assets/images/d3cd0eac6895e5f1.webp');
            background-size: cover;
            background-position: center;
        }
        .cta-bg-cover {
            background-image: linear-gradient(rgba(10, 132, 255, 0.94), rgba(0, 102, 204, 0.96)), url('/assets/images/e336446bcebde2e5.webp');
            background-size: cover;
            background-position: center;
        }
        .custom-card-shadow {
            box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.04);
            border: 1px solid rgba(0, 0, 0, 0.05);
        }
        .accordion-content {
            transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
        }