/* roulang page: index */
:root {
            --primary: #0D1117;
            --accent-green: #00F298;
            --accent-blue: #0066FF;
            --accent-orange: #FF5C00;
            --text-title: #0F172A;
            --text-body: #334155;
            --border-light: rgba(226, 232, 240, 0.8);
            --shadow-subtle: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
        }
        body {
            color: var(--text-body);
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }
        .tabular-nums {
            font-variant-numeric: tabular-nums;
        }
        .card-hover-effect {
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-subtle);
        }
        .card-hover-effect:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 242, 152, 0.5);
            box-shadow: 0 12px 30px -4px rgba(0, 102, 255, 0.12);
        }
        .hero-bg {
            background-image: linear-gradient(to right, rgba(13, 17, 23, 0.94), rgba(13, 17, 23, 0.82)), url('/assets/images/7b5194fd8461d7f2.jpg');
            background-size: cover;
            background-position: center;
        }
        .dark-section-bg {
            background-image: radial-gradient(circle at 10% 20%, rgba(0, 102, 255, 0.08) 0%, transparent 40%), linear-gradient(to bottom, #0A0D12, #0D1117);
        }
        .glow-button {
            transition: all 0.25s ease;
        }
        .glow-button:hover {
            box-shadow: 0 0 20px rgba(0, 242, 152, 0.4);
            transform: translateY(-1px);
        }