/* roulang page: index */
:root {
            --primary-navy: #0F2B48;
            --deep-space: #0B132B;
            --accent-cyan: #0EA5E9;
            --accent-violet: #6366F1;
            --surface-light: #F8FAFC;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--text-body);
            background-color: #FFFFFF;
            overflow-x: hidden;
        }
        .gradient-brand {
            background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-violet) 100%);
        }
        .gradient-brand-text {
            background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-violet) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-countdown-circle {
            background: conic-gradient(var(--accent-cyan) 82%, rgba(255, 255, 255, 0.1) 0%);
        }