/* roulang page: index */
:root {
            --primary: #6366F1;
            --primary-dark: #4F46E5;
            --secondary: #06B6D4;
            --accent-cyan: #22D3EE;
            --bg-light: #F8FAFC;
            --bg-card: #FFFFFF;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --border-line: #E2E8F0;
            --radius-main: 1.5rem;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }
        .hero-slant {
            clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
        }
        @media (max-width: 768px) {
            .hero-slant {
                clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
            }
        }
        .text-gradient {
            background: linear-gradient(135deg, #6366F1 0%, #06B6D4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .text-gradient-cyan {
            background: linear-gradient(135deg, #22D3EE 0%, #818CF8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .btn-gradient {
            background: linear-gradient(135deg, #6366F1 0%, #4F46E5 100%);
            transition: all 0.3s ease;
        }
        .btn-gradient:hover {
            background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
            box-shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.4);
            transform: translateY(-2px);
        }
        .border-gradient-card {
            border: 1px solid rgba(226, 232, 240, 0.8);
            transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .border-gradient-card:hover {
            border-color: rgba(99, 102, 241, 0.3);
            box-shadow: 0 20px 40px -15px rgba(99, 102, 241, 0.12);
            transform: translateY(-4px);
        }
        .custom-scrollbar::-webkit-scrollbar {
            height: 6px;
        }
        .custom-scrollbar::-webkit-scrollbar-thumb {
            background: #CBD5E1;
            border-radius: 9999px;
        }