/* 导航栏样式 */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #007bff !important;
}

/* 页脚样式 */
footer {
    margin-top: 4rem;
}

footer a {
    color: rgba(255,255,255,0.8);
    transition: color 0.3s ease;
}

footer a:hover {
    color: #fff;
}

/* 通用间距类 */
.section-padding {
    padding: 5rem 0;
}

/* 通用标题样式 */
.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.section-title p {
    color: #666;
    font-size: 1.1rem;
}

/* 按钮样式 */
.btn-primary {
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .section-title h2 {
        font-size: 2rem;
    }
    
    .section-padding {
        padding: 3rem 0;
    }
}