/* 模块导航样式 */
.module-nav {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.nav-btn {
    padding: 10px 20px;
    border: 2px solid #3498db;
    background: transparent;
    color: #3498db;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    background-color: #3498db;
    color: white;
    transform: translateY(-2px);
}

.nav-btn.active {
    background-color: #3498db;
    color: white;
}

/* 模块容器 */
.module {
    display: none;
}

.module.active {
    display: block;
}

/* 动画效果 */
.module.active {
    animation: fadeIn 0.3s ease-out;
}