/* roulang page: index */
:root {
            --brand-navy: #0B132B;
            --brand-dark: #1C2541;
            --brand-teal: #00F5D4;
            --brand-blue: #00BBF9;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-sub: #475569;
            --card-radius: 1.25rem;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
            overflow-x: hidden;
            line-height: 1.65;
        }

        .gradient-brand {
            background: linear-gradient(135deg, #00F5D4 0%, #00BBF9 100%);
        }
        
        .gradient-brand-text {
            background: linear-gradient(135deg, #00F5D4 0%, #00BBF9 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .gradient-dark-card {
            background: linear-gradient(145deg, #1C2541 0%, #0B132B 100%);
        }

        .hero-diagonal-mask {
            clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
        }

        .nav-blur {
            backdrop-filter: blur(16px);
            background-color: rgba(255, 255, 255, 0.92);
        }

        .shadow-soft {
            box-shadow: 0 10px 30px -5px rgba(11, 19, 43, 0.05);
        }

        .shadow-glow {
            box-shadow: 0 10px 30px -5px rgba(0, 245, 212, 0.25);
        }

        .tech-grid-pattern {
            background-image: radial-gradient(rgba(0, 245, 212, 0.15) 1px, transparent 1px);
            background-size: 24px 24px;
        }

        .custom-scrollbar::-webkit-scrollbar {
            width: 6px;
        }
        .custom-scrollbar::-webkit-scrollbar-thumb {
            background-color: #CBD5E1;
            border-radius: 9999px;
        }