/* roulang page: index */
:root {
            --primary: #4F46E5;
            --secondary: #7C3AED;
            --accent: #06B6D4;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --bg-light: #F8FAFC;
        }
        html {
            scroll-behavior: smooth;
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        body {
            color: var(--text-main);
            background-color: #FFFFFF;
            overflow-x: hidden;
        }
        .hero-bg-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(79, 70, 229, 0.75) 100%), url('/assets/images/5afb82c50019c558.png');
            background-size: cover;
            background-position: center;
        }
        .card-shadow {
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
        }
        .badge-glow {
            box-shadow: 0 0 15px rgba(6, 182, 212, 0.35);
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        .accordion-content.active {
            max-height: 350px;
        }