/* 全局样式 */
body {
    font-family: 'Microsoft YaHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 导航栏样式 */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar.scrolled {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    background-color: rgba(13, 110, 253, 0.95) !important;
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem;
}

.navbar-nav .nav-link:hover {
    color: #fff !important;
}

.navbar-nav .nav-link.active {
    color: #fff !important;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 0.375rem;
}

.dropdown-menu {
    border: none;
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
    border-radius: 0.5rem;
    padding: 0.5rem;
}

.dropdown-item {
    border-radius: 0.375rem;
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    background-color: rgba(13, 110, 253, 0.1);
    color: #0d6efd;
}

/* 页脚链接样式 */
.social-links a {
    display: inline-block;
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    text-align: center;
    line-height: 36px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: #0d6efd;
    transform: translateY(-3px);
}

footer a.text-light-50 {
    transition: color 0.3s ease;
    text-decoration: none;
}

footer a.text-light-50:hover {
    color: #fff !important;
}

/* 主要内容区域 */
/*
main {
    min-height: calc(100vh - 200px);
}
*/

/* 通用区域样式 */
.section-subtitle {
    display: inline-block;
    padding: 0.4rem 1rem;
    background-color: rgba(13, 110, 253, 0.1);
    color: #0d6efd;
    font-weight: 500;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 50px;
    margin-bottom: 1rem;
}

/* 页面标题样式 */
.page-header {
    background: linear-gradient(135deg, rgba(13, 110, 253, 0.9), rgba(13, 110, 253, 0.7)), url('/images/page-header-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    margin-top: -76px; /* 抵消固定导航栏高度 */
    padding-top: 76px;
    min-height: 300px;
    display: flex;
    align-items: center;
}

.page-header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.4));
    z-index: 1;
}

.page-header-content {
    position: relative;
    z-index: 2;
}

.page-header-subtitle {
    display: inline-block;
    padding: 0.4rem 1rem;
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.breadcrumb .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.7);
    content: ">";
}

.breadcrumb .breadcrumb-item a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.breadcrumb .breadcrumb-item a:hover {
    color: white;
}

.breadcrumb .breadcrumb-item.active {
    color: rgba(255, 255, 255, 0.9);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #212529;
}

.section-desc {
    font-size: 1.125rem;
    color: #6c757d;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 产品卡片样式 */
.product-card {
    border: none;
    border-radius: 0.75rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    overflow: hidden;
    height: 100%;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.product-image-container {
    position: relative;
    overflow: hidden;
    height: 220px;
    background-color: #f8f9fa;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-image-placeholder {
    width: 100%;
    height: 100%;
    background-color: #f8f9fa;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.6));
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 1.5rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.product-info {
    padding: 1.5rem;
}

.product-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #212529;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-desc {
    font-size: 0.875rem;
    color: #6c757d;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: #0d6efd;
}

/* 新闻卡片样式 */
.news-card {
    border: none;
    border-radius: 0.75rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.news-image-container {
    height: 180px;
    overflow: hidden;
    position: relative;
}

.news-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-image {
    transform: scale(1.05);
}

.news-image-placeholder {
    width: 100%;
    height: 100%;
    background-color: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-info {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.news-meta {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
}

.news-date, .news-views {
    font-size: 0.875rem;
    color: #6c757d;
}

.news-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #212529;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-desc {
    font-size: 0.875rem;
    color: #6c757d;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

.news-actions {
    margin-top: auto;
}

/* 关于我们区域样式 */
.about-desc {
    font-size: 1.125rem;
    line-height: 1.7;
    color: #6c757d;
    margin-bottom: 2rem;
}

.about-features {
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.feature-icon {
    width: 50px;
    height: 50px;
    background-color: rgba(13, 110, 253, 0.1);
    color: #0d6efd;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    flex-shrink: 0;
}

.feature-icon i {
    font-size: 1.25rem;
}

.feature-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-content p {
    font-size: 0.875rem;
    color: #6c757d;
    margin: 0;
}

.about-image {
    position: relative;
}

.about-stats {
    position: absolute;
    bottom: -20px;
    left: 20px;
    right: 20px;
    background-color: white;
    border-radius: 0.75rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    display: flex;
    justify-content: space-around;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.875rem;
    font-weight: 700;
    color: #0d6efd;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: #6c757d;
}

@media (max-width: 768px) {
    .about-stats {
        position: relative;
        bottom: auto;
        left: auto;
        right: auto;
        margin-top: 2rem;
    }
}

/* 保留原有的卡片样式用于其他页面 */
.card {
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

/* 按钮样式 */
.btn {
    border-radius: 0.375rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.125rem;
}

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

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

footer a:hover {
    color: #fff !important;
}

/* 英雄幻灯片区域样式 */
.hero-section {
    margin-top: -76px; /* 抵消固定导航栏高度 */
    padding-top: 76px;
    position: relative;
    overflow: hidden;
    min-height: 500px;
}

.hero-slide {
    min-height: 500px; /* 增加最小高度，确保足够的显示空间 */
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-slide-1 {
    background-image: linear-gradient(135deg, rgba(13, 110, 253, 0.9), rgba(13, 110, 253, 0.7)), url('/images/hero-bg-1.jpg');
}

.hero-slide-2 {
    background-image: linear-gradient(135deg, rgba(25, 135, 84, 0.9), rgba(25, 135, 84, 0.7)), url('/images/hero-bg-2.jpg');
}

.hero-image-placeholder {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.1));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 2rem 0; /* 减少内边距 */
}

.hero-subtitle {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.hero-title {
    font-size: 2.5rem; /* 减小标题字体大小 */
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem; /* 减少标题底部边距 */
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-desc {
    font-size: 1.125rem; /* 减小描述字体大小 */
    font-weight: 300;
    line-height: 1.6;
    margin-bottom: 1.5rem; /* 减少描述底部边距 */
    max-width: 600px;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero-image {
    position: relative;
    z-index: 2;
}

.hero-image img {
    max-height: 300px; /* 降低图片最大高度 */
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.2));
}

/* 响应式调整 */
@media (max-width: 991px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-image {
        margin-top: 2rem;
    }
    
    .hero-slide {
        min-height: 500px; /* 在中等屏幕上调整高度 */
    }
}

@media (max-width: 768px) {
    .hero-section {
        margin-top: -76px;
        padding-top: 76px;
    }
    
    .hero-title {
        font-size: 1.75rem; /* 在小屏幕上进一步减小标题 */
    }
    
    .hero-desc {
        font-size: 1rem;
    }
    
    .hero-slide {
        min-height: 450px; /* 在小屏幕上调整高度 */
    }
    
    .hero-content {
        padding: 1.5rem 0; /* 在小屏幕上减少内边距 */
    }
}

/* 保留原有的轮播图样式用于其他页面 */
.carousel-item {
    min-height: 500px;
}

.carousel-item .container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 500px;
}

/* 响应式图片 */
.img-fluid {
    border-radius: 0.375rem;
}

/* 徽章样式 */
.badge {
    font-weight: 500;
}

/* 面包屑样式 */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin: 0;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: ">";
    color: #6c757d;
}

/* 分页样式 */
.pagination .page-link {
    color: #007bff;
    border: 1px solid #dee2e6;
    margin: 0 2px;
    border-radius: 0.375rem;
}

.pagination .page-link:hover {
    background-color: #e9ecef;
    color: #0056b3;
}

.pagination .page-item.active .page-link {
    background-color: #007bff;
    border-color: #007bff;
}

/* 手风琴样式 */
.accordion-button:not(.collapsed) {
    background-color: #007bff;
    color: white;
}

.accordion-button:focus {
    box-shadow: none;
    border-color: #007bff;
}

/* 表单样式 */
.form-control:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}

/* 列表组样式 */
.list-group-item {
    border: none;
    border-bottom: 1px solid #dee2e6;
    transition: background-color 0.3s ease;
}

.list-group-item:last-child {
    border-bottom: none;
}

.list-group-item:hover {
    background-color: #f8f9fa;
}

/* 警告框样式 */
.alert {
    border: none;
    border-radius: 0.5rem;
}

/* 进度条样式 */
.progress {
    height: 0.5rem;
    border-radius: 0.25rem;
}

/* 模态框样式 */
.modal-content {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* 工具提示样式 */
.tooltip {
    font-size: 0.875rem;
}

/* 加载动画 */
.spinner-border {
    width: 1rem;
    height: 1rem;
}

/* 文本样式 */
.text-gradient {
    background: linear-gradient(45deg, #007bff, #0056b3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 背景样式 */
.bg-gradient-primary {
    background: linear-gradient(135deg, #007bff, #0056b3);
}

.bg-gradient-success {
    background: linear-gradient(135deg, #28a745, #1e7e34);
}

.bg-gradient-info {
    background: linear-gradient(135deg, #17a2b8, #138496);
}

.bg-gradient-warning {
    background: linear-gradient(135deg, #ffc107, #e0a800);
}

.bg-gradient-danger {
    background: linear-gradient(135deg, #dc3545, #c82333);
}

/* 阴影效果 */
.shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.075);
}

.shadow {
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.15);
}

.shadow-lg {
    box-shadow: 0 1rem 3rem rgba(0,0,0,0.175);
}

/* 边框样式 */
.border-left-primary {
    border-left: 4px solid #007bff;
}

.border-left-success {
    border-left: 4px solid #28a745;
}

.border-left-info {
    border-left: 4px solid #17a2b8;
}

.border-left-warning {
    border-left: 4px solid #ffc107;
}

.border-left-danger {
    border-left: 4px solid #dc3545;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 1.75rem;
    }
    
    .btn-lg {
        padding: 0.5rem 1.5rem;
        font-size: 1rem;
    }
    
    .carousel-item {
        min-height: 300px;
    }
    
    .carousel-item .container {
        min-height: 300px;
    }
}

@media (max-width: 576px) {
    .display-4 {
        font-size: 1.5rem;
    }
    
    .display-5 {
        font-size: 1.25rem;
    }
    
    .lead {
        font-size: 1rem;
    }
    
    .btn-lg {
        padding: 0.375rem 1rem;
        font-size: 0.875rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 选择文本样式 */
::selection {
    background-color: #007bff;
    color: white;
}

::-moz-selection {
    background-color: #007bff;
    color: white;
}

/* 打印样式 */
@media print {
    .navbar,
    footer,
    .btn,
    .pagination,
    .sidebar {
        display: none !important;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #dee2e6;
    }
}