/* roulang page: index */
:root {
            --color-primary: #0F2B48;
            --color-cyan: #007A87;
            --color-emerald: #10B981;
            --color-dark: #0B132B;
            --color-bg-light: #F8FAFC;
            --color-text-main: #0F172A;
            --color-text-muted: #475569;
        }

        html {
            scroll-behavior: smooth;
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        body {
            background-color: var(--color-bg-light);
            color: var(--color-text-main);
            line-height: 1.6;
        }

        .hero-banner-bg {
            background-image: linear-gradient(135deg, rgba(15, 43, 72, 0.94) 0%, rgba(11, 19, 43, 0.92) 100%), url('/assets/images/e28e960133acd5fd.webp');
            background-size: cover;
            background-position: center;
        }

        .card-custom {
            transition: all 0.28s ease;
        }

        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
        }

        .glow-tag {
            box-shadow: 0 0 12px rgba(16, 185, 129, 0.35);
        }

        .faq-body {
            transition: max-height 0.3s ease, opacity 0.3s ease;
        }