/* roulang page: index */
:root {
            --primary: #1E3A8A;
            --primary-dark: #0F172A;
            --accent: #059669;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --bg-base: #F8FAFC;
            --border-light: #E2E8F0;
        }

        html {
            scroll-behavior: smooth;
            font-family: Inter, system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
        }

        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            overflow-x: hidden;
        }

        .hero-video-mask {
            background: linear-gradient(180deg, rgba(11, 15, 23, 0.82) 0%, rgba(15, 23, 42, 0.94) 100%);
        }

        .glass-panel {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(226, 232, 240, 0.8);
        }

        .dark-glass {
            background: rgba(15, 23, 42, 0.75);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .tech-border {
            border: 1px solid #E2E8F0;
            transition: all 0.3s ease;
        }

        .tech-border:hover {
            border-color: #3B82F6;
            box-shadow: 0 10px 25px -5px rgba(30, 58, 138, 0.08);
            transform: translateY(-2px);
        }

        .pulse-badge {
            animation: pulseLight 2s infinite ease-in-out;
        }

        @keyframes pulseLight {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(0.96); }
        }