dy {
            background: linear-gradient(135deg, #0d0f1e 0%, #1a1e3c 100%);
            color: var(--text-light);
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
        }

        /* 科技感背景 */
        .tech-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
            overflow: hidden;
            background: radial-gradient(circle at center, rgba(7