/* roulang page: index */
:root {
            --primary: #0F4C81;
            --accent: #F59E0B;
            --dark: #0A192F;
            --bg-light: #F8FAFC;
        }
        body {
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            color: #1E293B;
            background-color: #FFFFFF;
            overflow-x: hidden;
        }
        .text-gradient {
            background: linear-gradient(135deg, #0F4C81 0%, #1E40AF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-banner-bg {
            background-image: linear-gradient(rgba(15, 76, 129, 0.92), rgba(10, 25, 47, 0.94)), url('/assets/images/24daefc9370317bd.webp');
            background-size: cover;
            background-position: center;
        }
        .glass-panel {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(226, 232, 240, 0.8);
        }
        .accordion-content {
            transition: max-height 0.3s ease-out, opacity 0.2s ease-out;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
        }
        .accordion-content.active {
            max-height: 250px;
            opacity: 1;
        }