/* roulang page: index */
:root {
            --primary: #0B2545;
            --secondary: #134074;
            --accent: #0066FF;
            --cyan: #00B4D8;
            --slate-text: #334155;
            --title-text: #0F172A;
            --border-color: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--slate-text);
            background-color: #FFFFFF;
            line-height: 1.75;
            letter-spacing: 0.01em;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        .hero-banner {
            background-image: linear-gradient(135deg, rgba(7, 21, 39, 0.94) 0%, rgba(11, 37, 69, 0.88) 100%), url('/assets/images/125fab077358e14c.png');
            background-size: cover;
            background-position: center;
        }
        .deep-section {
            background-image: radial-gradient(circle at 85% 15%, rgba(0, 180, 216, 0.12), transparent 40%), linear-gradient(180deg, #071527 0%, #0B2545 100%);
        }
        .glow-border {
            border: 1px solid rgba(0, 180, 216, 0.25);
            box-shadow: 0 0 15px rgba(0, 180, 216, 0.08);
        }
        .badge-cyan {
            background: rgba(0, 180, 216, 0.1);
            color: #00B4D8;
            border: 1px solid rgba(0, 180, 216, 0.2);
        }
        .btn-digital {
            background: linear-gradient(90deg, #0066FF 0%, #00B4D8 100%);
            transition: all 0.3s ease;
        }
        .btn-digital:hover {
            box-shadow: 0 6px 20px rgba(0, 102, 255, 0.35);
            transform: translateY(-2px);
        }
        .card-trans {
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .card-trans:hover {
            transform: translateY(-4px);
        }
        .countdown-box {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }