/* roulang page: index */
:root {
            --color-primary: #0B192C;
            --color-dark: #060D17;
            --color-accent: #D4AF37;
            --color-muted: #686D76;
            --color-border: rgba(226, 232, 240, 0.8);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            color: #1E2022;
            background-color: #F8F9FA;
            -webkit-font-smoothing: antialiased;
        }
        .text-gold-gradient {
            background: linear-gradient(135deg, #D4AF37 0%, #F5E6AB 50%, #C5A880 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(226, 232, 240, 0.8);
        }
        .dark-glass-card {
            background: rgba(11, 25, 44, 0.85);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(212, 175, 55, 0.2);
        }
        .hero-bg-overlay {
            background: linear-gradient(90deg, rgba(6, 13, 23, 0.95) 0%, rgba(11, 25, 44, 0.88) 50%, rgba(6, 13, 23, 0.75) 100%);
        }
        details summary::-webkit-details-marker {
            display: none;
        }
        .btn-hover-effect {
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .btn-hover-effect:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(212, 175, 55, 0.3);
        }