/* roulang page: index */
:root {
            --primary: #10b981;
            --primary-dark: #047857;
            --accent: #f59e0b;
            --dark-bg: #0f172a;
            --card-border: #e2e8f0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            color: #0f172a;
            background-color: #f8fafc;
            line-height: 1.75;
        }
        .hero-bg {
            background-image: linear-gradient(rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.9)), url('/assets/images/95d1c5d31c8f2307.jpg');
            background-size: cover;
            background-position: center;
        }
        .accordion-content {
            transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
        }
        .accordion-content.open {
            max-height: 200px;
            opacity: 1;
        }