/* roulang page: index */
:root {
            --brand-primary: #0f172a;
            --brand-accent: #2563eb;
            --brand-accent-hover: #1d4ed8;
            --brand-surface: #ffffff;
            --brand-muted: #64748b;
            --brand-border: #e2e8f0;
            --brand-bg-alt: #f8fafc;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            color: #1e293b;
            background-color: #ffffff;
            line-height: 1.6;
        }

        .hero-bg {
            background-image: linear-gradient(rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.94)), url('/assets/images/8a1b8ce5c2800847.png');
            background-size: cover;
            background-position: center;
        }

        .accent-gradient-text {
            background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 50%, #93c5fd 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .border-subtle {
            border-color: var(--brand-border);
        }

        .transition-base {
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .hover-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px -10px rgba(15, 23, 42, 0.08);
        }