/* roulang page: index */
:root {
            --bg-deep: #0F141C;
            --bg-card: #18202C;
            --accent-green: #00F59B;
            --accent-emerald: #10B981;
            --text-primary: #FFFFFF;
            --text-secondary: #E2E8F0;
            --text-muted: #94A3B8;
            --border-line: rgba(51, 65, 85, 0.6);
        }
        body {
            background-color: var(--bg-deep);
            color: var(--text-secondary);
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            line-height: 1.8;
            letter-spacing: 0.025em;
            overflow-x: hidden;
        }
        .kinetic-gradient-text {
            background: linear-gradient(135deg, #00F59B 0%, #10B981 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .kinetic-border {
            border: 1px solid var(--border-line);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .kinetic-border:hover {
            border-color: rgba(0, 245, 155, 0.4);
            transform: translateY(-4px);
            box-shadow: 0 10px 30px -10px rgba(0, 245, 155, 0.15);
        }
        .btn-kinetic {
            background: linear-gradient(135deg, #00F59B 0%, #10B981 100%);
            color: #0F141C;
            font-weight: 700;
            transition: all 0.25s ease;
        }
        .btn-kinetic:hover {
            opacity: 0.92;
            box-shadow: 0 0 20px rgba(0, 245, 155, 0.45);
        }