/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础样式 */
body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo h2 {
    color: #2563eb;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 2px;
}

.nav-logo span {
    color: #64748b;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-item {
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: #334155;
    font-weight: 500;
    font-size: 16px;
    transition: all 0.3s ease;
    padding: 10px 0;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #2563eb;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #2563eb;
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 10px 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    list-style: none;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: #334155;
    text-decoration: none;
    transition: all 0.3s ease;
}

.dropdown-menu a:hover {
    background: #f1f5f9;
    color: #2563eb;
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}

.hamburger:focus-visible {
    outline: 2px solid #2563eb;
    outline-offset: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: #334155;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主页横幅 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-text p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: #2563eb;
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #2563eb;
    transform: translateY(-2px);
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.hero-stats {
    max-width: 1200px;
    margin: 60px auto 0;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-item h3 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #fbbf24;
}

.stat-item p {
    font-size: 16px;
    opacity: 0.9;
}

/* 通用区块样式 */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 18px;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    background: #f8fafc;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 28px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 20px;
}

.about-text p {
    font-size: 16px;
    color: #475569;
    margin-bottom: 20px;
    line-height: 1.7;
}

.company-info {
    margin-top: 30px;
}

.info-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    font-size: 16px;
    color: #475569;
}

.info-item i {
    color: #2563eb;
    margin-right: 15px;
    width: 20px;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

/* 产品与服务 */
.products {
    background: white;
}

.product-categories {
    display: grid;
    gap: 60px;
}

.category-card {
    background: #f8fafc;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
}

.card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
}

.card-icon i {
    font-size: 36px;
    color: white;
}

.category-card h3 {
    font-size: 28px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 15px;
}

.category-card > p {
    font-size: 16px;
    color: #64748b;
    margin-bottom: 40px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.product-item {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.product-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 20px;
}

.product-item h4 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 10px;
}

.product-item p {
    font-size: 14px;
    color: #64748b;
}

/* 解决方案 */
.solutions {
    background: #f8fafc;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.solution-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.solution-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #10b981, #059669);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
}

.solution-icon i {
    font-size: 36px;
    color: white;
}

.solution-card h3 {
    font-size: 24px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 20px;
}

.solution-card p {
    font-size: 16px;
    color: #64748b;
    margin-bottom: 25px;
    line-height: 1.6;
}

.solution-card ul {
    list-style: none;
    text-align: left;
}

.solution-card li {
    font-size: 14px;
    color: #475569;
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.solution-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* 新闻动态 */
.news {
    background: white;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.news-card {
    background: #f8fafc;
    border-radius: 15px;
    padding: 30px;
    transition: all 0.3s ease;
    display: flex;
    gap: 20px;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.news-date {
    text-align: center;
    min-width: 60px;
}

.news-date .day {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: #2563eb;
    line-height: 1;
}

.news-date .month {
    display: block;
    font-size: 12px;
    color: #64748b;
    margin-top: 5px;
}

.news-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 15px;
    line-height: 1.4;
}

.news-content p {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 15px;
    line-height: 1.6;
}

.read-more {
    color: #2563eb;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.read-more:hover {
    color: #1d4ed8;
}

/* 联系我们 */
.contact {
    background: #f8fafc;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 24px;
    color: white;
}

.contact-details h4 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 10px;
}

.contact-details p {
    font-size: 16px;
    color: #64748b;
    line-height: 1.6;
}

.contact-form {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 30px;
    text-align: center;
}

.form-group {
    margin-bottom: 25px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    background: #1e293b;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: white;
}

.footer-section h3 {
    font-size: 20px;
    font-weight: 700;
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 600;
}

.footer-section p {
    color: #94a3b8;
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #334155;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

.contact-info-footer p {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    font-size: 14px;
}

.contact-info-footer i {
    margin-right: 10px;
    width: 16px;
    color: #2563eb;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: #94a3b8;
    font-size: 14px;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

.back-to-top.show {
    display: flex;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
        gap: 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-item {
        margin: 10px 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 36px;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 200px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .nav-container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-text h1 {
        font-size: 28px;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
}

/* 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;
}

/* 滚动动画 */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.scroll-animate.animate {
    opacity: 1;
    transform: translateY(0);
}



/* Dropdown Menu Styles */
.nav-item.dropdown {
    position: relative;
}

.dropdown-menu {
    display: none;
    position: absolute;
    background-color: #333;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
    list-style: none;
    padding: 0;
    margin: 0;
    border-radius: 5px;
    overflow: hidden;
    top: 100%; /* Position below the parent link */
    left: 0;
}

.dropdown-menu li a {
    color: white;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
    white-space: nowrap; /* Prevent text wrapping */
}

.dropdown-menu li a:hover {
    background-color: #575757;
}

.nav-item.dropdown:hover .dropdown-menu {
    display: block;
}

/* Adjustments for active link in dropdown */
.dropdown-menu li a.active {
    background-color: #007bff; /* Example active color */
    color: white;
}

/* Ensure dropdown icon is visible */
.nav-link i.fas.fa-chevron-down {
    margin-left: 5px;
    font-size: 0.8em;
}

/* Page specific styles */
.page-hero {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("../images/hero-bg.jpg") no-repeat center center/cover;
    color: white;
    text-align: center;
    padding: 100px 20px;
    margin-top: 80px; /* Adjust based on navbar height */
}

.page-hero h1 {
    font-size: 3em;
    margin-bottom: 10px;
}

.page-hero p {
    font-size: 1.2em;
    max-width: 800px;
    margin: 0 auto;
}

.page-content {
    padding: 60px 0;
    background-color: #f9f9f9;
}

.page-content .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.content-block {
    background-color: #fff;
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.content-block h2 {
    color: #333;
    font-size: 2em;
    margin-bottom: 20px;
    border-bottom: 2px solid #007bff;
    padding-bottom: 10px;
}

.content-block p {
    line-height: 1.8;
    margin-bottom: 15px;
    color: #555;
}

.content-block ul {
    list-style: disc;
    margin-left: 20px;
    margin-bottom: 15px;
    color: #555;
}

.content-block ul li {
    margin-bottom: 8px;
}

.image-gallery {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
    margin-bottom: 20px;
    justify-content: center;
}

.image-gallery img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    max-height: 300px; /* Limit image height */
    object-fit: cover; /* Ensure images cover the area without distortion */
}

.image-gallery img:hover {
    transform: translateY(-5px);
}

/* News specific styles */
.news-meta {
    font-size: 0.9em;
    color: #888;
    margin-bottom: 10px;
}

.news-grid .news-card .read-more {
    display: inline-block;
    margin-top: 10px;
    color: #007bff;
    text-decoration: none;
    font-weight: bold;
}

.news-grid .news-card .read-more:hover {
    text-decoration: underline;
}

/* Footer adjustments for new pages */
.footer .footer-section ul li a {
    color: #ccc;
    text-decoration: none;
}

.footer .footer-section ul li a:hover {
    color: #fff;
}

/* Responsive adjustments for pages */
@media (max-width: 768px) {
    .page-hero h1 {
        font-size: 2.5em;
    }

    .page-hero p {
        font-size: 1em;
    }

    .content-block h2 {
        font-size: 1.8em;
    }

    .image-gallery {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .page-hero {
        padding: 80px 15px;
    }

    .page-hero h1 {
        font-size: 2em;
    }

    .content-block {
        padding: 20px;
    }

    .content-block h2 {
        font-size: 1.5em;
    }
}