/* 组件级样式 */
.background-layer {
    position: fixed;
    top: -326px;
    left: -8px;
    width: 1550px;
    height: 1158px;
    z-index: -1;
    background: rgba(0,0,0,0.3);
}

.title {
    text-align: center;
    font-size: 4rem;
    color: var(--text-light);
    margin: 2rem 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    background: rgba(255,255,255,0.1);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.2);
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 1.5rem;
    background: linear-gradient(45deg, #4CAF50, #45a049);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: transform 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
}

.footer {
    text-align: center;
    margin-top: 3rem;
    font-size: 1.2rem;
    color: var(--text-light);
}