/* 全局样式 */
:root {
    --primary-color: #8B0000;     /* 深红色 */
    --secondary-color: #DAA520;   /* 金色 */
    --text-color: #333;           /* 深灰色文本 */
    --bg-color: #FFF9E6;         /* 米黄色背景 */
    --border-color: #8B0000;     /* 深红色边框 */
}

body {
    font-family: "Microsoft YaHei", "SimSun", sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
}

/* 导航栏样式 */
.navbar {
    background-color: #fff !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    border-bottom: 2px solid var(--border-color);
}

.navbar-brand {
    color: var(--primary-color) !important;
    font-weight: bold;
    font-size: 1.5rem;
}

.nav-link {
    color: var(--text-color) !important;
    position: relative;
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
    left: 0;
}

/* 轮播图样式 */
.carousel {
    margin-bottom: 2rem;
}

.carousel-item {
    height: 500px;
}

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

.carousel-caption {
    background: rgba(0, 0, 0, 0.5);
    padding: 20px;
    border-radius: 10px;
}

.carousel-caption h2 {
    color: var(--secondary-color);
    font-weight: bold;
}

/* 计数器样式 */
.counter {
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.counter h3 {
    color: var(--primary-color);
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 5px;
}

/* 卡片样式 */
.card {
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    background-color: #fff;
    margin-bottom: 2rem;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(139,0,0,0.2);
}

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

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

/* 案例展示样式 */
.case-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    margin-bottom: 30px;
}

.case-item img {
    transition: transform 0.3s ease;
}

.case-overlay {
    position: absolute;
    bottom: -100%;
    left: 0;
    right: 0;
    background: rgba(139, 0, 0, 0.9);
    color: #fff;
    padding: 20px;
    transition: bottom 0.3s ease;
}

.case-item:hover img {
    transform: scale(1.1);
}

.case-item:hover .case-overlay {
    bottom: 0;
}

.case-overlay h5 {
    color: var(--secondary-color);
    margin-bottom: 10px;
}

/* 新闻卡片样式 */
.news-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.news-content {
    padding: 20px;
}

.news-date {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.news-card h5 {
    margin: 10px 0;
    color: var(--text-color);
}

.news-card .btn-link {
    color: var(--primary-color);
    padding: 0;
    text-decoration: none;
}

.news-card .btn-link:hover {
    color: var(--secondary-color);
}

/* 合作伙伴样式 */
.partner-logo {
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all 0.3s ease;
    padding: 15px;
}

.partner-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
}

/* 按钮样式 */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #6B0000;
    border-color: #6B0000;
    transform: translateY(-2px);
}

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

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

/* 表单样式 */
.form-control {
    border: 1px solid #ddd;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(139,0,0,0.25);
}

/* 页脚样式 */
footer {
    background-color: #fff !important;
    border-top: 2px solid var(--border-color);
}

footer p {
    color: var(--text-color);
    margin: 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .carousel-item {
        height: 300px;
    }
    
    .card-img-top {
        height: 150px;
    }
    
    .counter {
        margin-bottom: 20px;
    }
    
    .case-overlay {
        padding: 10px;
    }
    
    .case-overlay h5 {
        font-size: 1rem;
    }
    
    .case-overlay p {
        font-size: 0.9rem;
    }
}