/* roulang page: index */
:root {
            --primary: #1B5E20;
            --primary-hover: #2E7D32;
            --accent: #E65100;
            --accent-hover: #F57C00;
            --dark-slate: #0F172A;
            --text-main: #0F172A;
            --text-muted: #475569;
            --border-color: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background-color: #ffffff;
        }
        .hero-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(27, 94, 32, 0.88) 100%);
        }
        .card-shadow {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-shadow:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 30px -4px rgba(27, 94, 32, 0.12);
        }
        .btn-glow {
            box-shadow: 0 4px 14px 0 rgba(230, 81, 0, 0.39);
        }
        .btn-glow:hover {
            box-shadow: 0 6px 20px 0 rgba(230, 81, 0, 0.48);
        }