/* roulang page: index */
:root {
            --primary: #FF5500;
            --primary-dark: #E04B00;
            --dark-bg: #111215;
            --card-dark: #1A1C22;
            --light-bg: #F8F9FA;
            --cyan: #00E5FF;
            --text-main: #2B2F38;
            --text-muted: #6C757D;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            background-color: var(--light-bg);
            color: var(--text-main);
            overflow-x: hidden;
        }
        .hero-banner {
            background: linear-gradient(135deg, rgba(17, 18, 21, 0.94) 0%, rgba(17, 18, 21, 0.82) 100%), url('/assets/images/05c982e14048e8fc.jpg') center/cover no-repeat;
        }
        .dark-tech-pattern {
            background-color: var(--dark-bg);
            background-image: radial-gradient(rgba(255, 85, 0, 0.08) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .num-font {
            font-family: 'DIN Alternate', 'Roboto Mono', 'Trebuchet MS', monospace;
        }
        .glass-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .card-shadow {
            box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.04);
            border: 1px solid rgba(0, 0, 0, 0.06);
            transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .card-shadow:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px -4px rgba(0, 0, 0, 0.08);
            border-color: rgba(255, 85, 0, 0.3);
        }
        .btn-brand {
            background: var(--primary);
            color: #ffffff;
            transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .btn-brand:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 24px -4px rgba(255, 85, 0, 0.4);
        }