/* roulang page: index */
:root {
            --brand-primary: #10B981;
            --brand-tech: #06B6D4;
            --brand-accent: #F97316;
            --bg-dark: #0F172A;
            --bg-card: #FFFFFF;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #F8FAFC;
            color: #1E293B;
        }
        .gradient-brand {
            background: linear-gradient(135deg, #10B981 0%, #06B6D4 100%);
        }
        .gradient-brand-text {
            background: linear-gradient(135deg, #10B981 0%, #06B6D4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .badge-pill {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.85rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
            border-width: 1px;
            backdrop-filter: blur(8px);
        }
        .card-custom {
            border-radius: 1.5rem;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border: 1px solid rgba(226, 232, 240, 0.8);
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            border-color: rgba(6, 182, 212, 0.4);
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        .accordion-content.active {
            max-height: 500px;
        }