/* 全局样式 */
:root {
    --primary-color: #0056b3;
    --secondary-color: #6c757d;
    --accent-color: #ffc107;
}

body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
}

/* 导航栏样式 */
.navbar {
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-brand img {
    transition: all 0.3s ease;
}

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

.nav-link:hover {
    color: var(--primary-color) !important;
}

/* 轮播图样式 */
.carousel-item {
    height: 600px;
}

.carousel-item img {
    object-fit: cover;
    height: 100%;
}

.carousel-caption {
    background: rgba(0, 0, 0, 0.5);
    padding: 2rem;
    border-radius: 10px;
}

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

/* 卡片样式 */
.card {
    border: none;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.card-img-top {
    height: 200px;
    object-fit: cover;
}

.card-title {
    color: var(--primary-color);
    font-weight: bold;
}

/* 按钮样式 */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 0.5rem 1.5rem;
    font-weight: 500;
}

.btn-primary:hover {
    background-color: #004494;
    border-color: #004494;
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* 页脚样式 */
footer {
    background-color: #343a40;
}

footer h5 {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

footer a {
    color: #fff;
    text-decoration: none;
    transition: all 0.3s ease;
}

footer a:hover {
    color: var(--accent-color);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .carousel-item {
        height: 400px;
    }

    .carousel-caption h2 {
        font-size: 1.8rem;
    }

    .card-img-top {
        height: 150px;
    }
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 1s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}