* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    /*position: fixed;*/
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}
.nav-mobile{
    display: none;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.navbar-brand h1 {
    color: #8B4513;
    font-size: 24px;
    font-weight: 700;
}

.navbar-nav {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover {
    color: #8B4513;
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
}

.navbar-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: 0.3s;
}

/* Hero 区域 */
.hero {
    background: linear-gradient(135deg, #8B4513 0%, #A0522D 100%);
    color: white;
    padding: 150px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    opacity: 0.3;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

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

.btn-primary {
    background: #fff;
    color: #8B4513;
}

.btn-primary:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: #fff;
    color: #8B4513;
}

/* 通用section样式 */
.section {
    padding: 80px 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
    position: relative;
}

.section-title::after {
    content: '';
    width: 60px;
    height: 4px;
    background: #8B4513;
    display: block;
    margin: 20px auto;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 服务项目 */
.services {
    background: #f8f9fa;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.service-icon {
    font-size: 3rem;
    color: #8B4513;
    margin-bottom: 20px;
}

.service-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.service-description {
    color: #666;
    line-height: 1.6;
}

.service-tag {
    position: absolute;
    top: 20px;
    right: 20px;
    background: #28a745;
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
}

/* 服务优势 */
.advantages {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.advantage-item {
    text-align: center;
    padding: 30px 20px;
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #8B4513, #A0522D);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: white;
}

.advantage-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.advantage-description {
    color: #666;
    line-height: 1.6;
}

/* 关于我们 */
.about {
    padding: 100px 0;
}

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

.about-text {
    padding: 20px 0;
}

.about-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 40px;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #8B4513, #A0522D);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: #333;
}

.feature-text p {
    color: #666;
    line-height: 1.5;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

/* 产品案例 */
.products {
    background: #f8f9fa;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.product-image {
    height: 200px;
    background: linear-gradient(135deg, #8B4513, #A0522D);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.product-content {
    padding: 25px;
}

.product-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.product-description {
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.product-feature {
    background: #e9f7ff;
    color: #0066cc;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 500;
}

/* 新闻资讯 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.news-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.news-image {
    height: 200px;
    background: linear-gradient(135deg, #8B4513, #A0522D);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
}

.news-content {
    padding: 25px;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.news-category {
    background: #8B4513;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.news-date {
    color: #999;
    font-size: 14px;
}

.news-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #333;
    line-height: 1.4;
}

.news-excerpt {
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

.news-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid #eee;
    padding-top: 15px;
}

.read-time {
    color: #999;
    font-size: 14px;
}

/* 常见问题 */
.faq {
    background: #f8f9fa;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 25px;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-toggle {
    font-size: 20px;
    transition: transform 0.3s;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer-content {
    padding: 0 25px 25px;
    color: #666;
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-item.active .faq-toggle {
    transform: rotate(180deg);
}

/* 客户评价 */
.reviews {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.review-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    position: relative;
}

.review-quote {
    font-size: 4rem;
    color: #8B4513;
    opacity: 0.3;
    position: absolute;
    top: 10px;
    left: 20px;
    line-height: 1;
}

.review-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    position: relative;
    z-index: 2;
}

.reviewer-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 15px;
}

.reviewer-name {
    font-weight: 600;
    color: #333;
}

.rating {
    display: flex;
    gap: 2px;
    margin-bottom: 15px;
}

.star {
    color: #ffc107;
    font-size: 18px;
}

.review-text {
    color: #555;
    line-height: 1.6;
    font-style: italic;
}

/* 联系我们 */
.contact {
    background: linear-gradient(135deg, #8B4513 0%, #A0522D 100%);
    color: white;
}

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

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.contact-item i {
    font-size: 1.5rem;
    margin-right: 20px;
    width: 30px;
}

.contact-form {
    background: rgba(255,255,255,0.1);
    padding: 40px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 8px;
    background: rgba(255,255,255,0.1);
    color: white;
    font-size: 16px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255,255,255,0.7);
}

/* Flink */
.flink-section {
    background: white;
    color: #2d3748;
    padding: 30px 0;
}
.flink-header{
    font-size: 20px;
    font-weight: 600;
    padding-bottom: 10px;
}
.flink-section li{
    list-style: none;
    display: inline;
    padding-right: 20px;
}
.flink-section a{
    color: #718096;
    text-decoration: none;
}

/* 页脚 */
.footer {
    background: #333;
    color: white;
    padding: 40px 0 20px;
    text-align: center;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h4 {
    margin-bottom: 20px;
    color: #8B4513;
}

.footer-section p,
.footer-section a {
    color: #ccc;
    text-decoration: none;
    line-height: 1.6;
}

.footer-section a:hover {
    color: #8B4513;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 20px;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
    nav.nav-mobile.active{
        display: grid;
        text-align: center;
        padding: 40px 0;
        gap: 1.5rem;
    }
    
    .navbar-nav {
        display: none;
    }

    .navbar-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .services-grid,
    .products-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .advantages-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 数据统计样式 */
.stats {
    background: white;
    border-radius: 12px;
    padding: 50px;
    text-align: center;
    margin-top: 50px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #8B4513;
    margin-bottom: 10px;
}

.stat-label {
    color: #666;
    font-weight: 500;
}