/* 基础样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.nav-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.btn {
    padding: 20px;
    background: #007BFF;
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    transition: transform 0.2s;
}

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