/* roulang page: index */
:root {
            --primary: #1E5BB8;
            --primary-dark: #13438E;
            --accent: #00A887;
            --amber: #FF7A22;
            --navy: #0B1B3D;
            --bg-light: #F8FAFC;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        body {
            color: #0F172A;
            background-color: #FFFFFF;
            overflow-x: hidden;
        }
        .hero-banner-bg {
            background-image: linear-gradient(90deg, rgba(248, 250, 252, 0.96) 0%, rgba(248, 250, 252, 0.88) 55%, rgba(248, 250, 252, 0.7) 100%), url('/assets/images/8bcea138300381a5.webp');
            background-size: cover;
            background-position: center;
        }
        .dark-section-bg {
            background-image: radial-gradient(circle at 80% 20%, rgba(30, 91, 184, 0.25) 0%, transparent 60%), linear-gradient(180deg, #0B1B3D 0%, #071229 100%);
        }
        .card-hover-effect {
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .card-hover-effect:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 25px -5px rgba(30, 91, 184, 0.08), 0 8px 10px -6px rgba(30, 91, 184, 0.05);
        }
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out;
        }
        .faq-item.active .faq-content {
            max-height: 400px;
        }
        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
        }