/* =============== 时钟模块 =============== */
#clock {
    font-size: 3.5rem;
    font-weight: 700;
    margin: 15px 0 25px;
    font-family: 'Courier New', monospace;
    color: #fff;
    text-shadow: 0 0 10px rgba(79, 172, 254, 0.7);
    background: rgba(0, 0, 0, 0.2);
    border-radius: 15px;
    padding: 15px;
    display: inline-block;
    min-width: 280px;
    transition: all 0.3s ease;
}

.hover-effect:hover {
    transform: scale(1.03);
    text-shadow: 0 0 15px rgba(79, 172, 254, 1);
    background: rgba(0, 0, 0, 0.3);
}