/* roulang page: index */
:root {
            --primary: #0284c7;
            --primary-dark: #0369a1;
            --accent: #ea580c;
            --bg-page: #f8fafc;
            --text-heading: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --radius-xl: 1rem;
            --radius-2xl: 1.5rem;
            --shadow-subtle: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-page);
            color: var(--text-body);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            overflow-x: hidden;
        }

        .hero-banner-bg {
            background: linear-gradient(135deg, rgba(2, 132, 199, 0.95) 0%, rgba(37, 99, 235, 0.92) 50%, rgba(15, 23, 42, 0.95) 100%), url('/assets/images/019e2960dd0f2826.jpg') center/cover no-repeat;
        }

        .dark-case-bg {
            background: radial-gradient(circle at 20% 30%, #1e293b 0%, #0f172a 70%, #020617 100%);
        }

        .card-custom {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-subtle);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .data-badge {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
            background-color: #f0f9ff;
            color: #0369a1;
            border: 1px solid #bae6fd;
        }

        .data-badge-orange {
            background-color: #fff7ed;
            color: #c2410c;
            border: 1px solid #ffedd5;
        }

        .faq-item input:checked ~ .faq-content {
            max-height: 280px;
            opacity: 1;
            padding-top: 0.75rem;
        }

        .faq-item input:checked ~ label svg {
            transform: rotate(180deg);
        }