/* 全局样式重置与基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #F5F7FA;
    color: #333333;
    line-height: 1.6;
}

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

/* 色彩变量定义 */
:root {
    --primary-color: #0F52BA;
    --secondary-color: #FFD700;
    --tertiary-color: #2C3E50;
    --accent-color: #00FF99;
    --bg-color: #F5F7FA;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-accent: #0F52BA;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: all 0.3s ease;
    padding: 15px 0;
}

.navbar.scrolled {
    background: linear-gradient(180deg, rgba(15, 82, 186, 0.95) 0%, rgba(15, 82, 186, 1) 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 10px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    color: #fff;
}

.logo img {
    height: 50px;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--secondary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width 0.3s ease;
}

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

/* 汉堡菜单样式 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Banner 样式 */
.banner {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('docs/banner.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    padding-top: 80px;
}

.banner-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.banner-content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(45deg, var(--primary-color), #1E90FF);
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn:hover {
    background: linear-gradient(45deg, #1E90FF, var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(15, 82, 186, 0.4);
}

/* 章节通用样式 */
section {
    padding: 80px 0;
}

section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 40px;
    color: var(--primary-color);
    position: relative;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--secondary-color);
    border-radius: 2px;
}

/* 公司简介样式 */
.company-intro {
    background: #fff;
}

.intro-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.intro-content p {
    margin-bottom: 20px;
}

/* 核心优势样式 */
.core-advantages {
    background: var(--bg-color);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.advantage-item {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.advantage-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.advantage-item p {
    color: var(--text-secondary);
}

/* 荣誉板块样式 */
.honors {
    background: #fff;
}

.honors-content {
    display: flex;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
    justify-content: center;
}

.honors-content img {
    max-width: 400px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.honor-text {
    max-width: 400px;
    text-align: center;
}

.honor-text h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.honor-text p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* 公司理念样式 */
.company-philosophy {
    background: linear-gradient(135deg, var(--primary-color), #1E90FF);
    color: #fff;
}

.company-philosophy h2 {
    color: #fff;
}

.company-philosophy h2::after {
    background: var(--secondary-color);
}

.philosophy-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.2rem;
    line-height: 1.8;
}

.philosophy-content p {
    margin-bottom: 20px;
}

/* 页脚样式 */
.footer {
    background: var(--tertiary-color);
    color: #fff;
    padding: 50px 0 20px;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
}

.footer-logo img {
    height: 40px;
    width: auto;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

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

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

.footer-links ul li a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: var(--secondary-color);
}

.footer-contact p {
    margin-bottom: 15px;
    line-height: 1.6;
}

.footer-contact a {
    color: var(--secondary-color);
    text-decoration: none;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--secondary-color);
    text-decoration: none;
}

/* 产品页样式 */
.products-banner {
    height: 50vh;
    background: linear-gradient(rgba(15, 82, 186, 0.7), rgba(15, 82, 186, 0.7)), url('docs/banner-product.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    padding-top: 80px;
}

.products-banner h1 {
    font-size: 2.5rem;
}

/* 产品筛选样式 */
.product-filters {
    background: #fff;
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.filter-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-tab {
    padding: 10px 20px;
    background: var(--bg-color);
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    color: var(--text-secondary);
}

.filter-tab.active,
.filter-tab:hover {
    background: var(--primary-color);
    color: #fff;
}

/* 产品网格样式 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.product-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-item:hover img {
    transform: scale(1.05);
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.product-info p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 82, 186, 0.9);
    color: #fff;
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    cursor: pointer;
}

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

.product-overlay h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.product-overlay p {
    margin-bottom: 20px;
    font-size: 1rem;
}

/* 案例页样式 */
.cases-banner {
    height: 80vh;
    background: linear-gradient(rgba(15, 82, 186, 0.7), rgba(15, 82, 186, 0.7)), url('docs/banner-case.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    padding-top: 80px;
}

.cases-banner h1 {
    font-size: 2.5rem;
}

/* 案例筛选样式 */
.case-filters {
    background: #fff;
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* 案例网格样式 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.case-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.case-info {
    padding: 20px;
}

.case-info h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.case-info p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 0.95rem;
}

/* 相关项目新闻评价和报道样式 */
.case-news {
    background: var(--bg-color);
    padding: 80px 0;
}

.news-single {
    margin-top: 40px;
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.news-image-full {
    width: 100%;
    overflow: hidden;
}

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

.news-single:hover .news-image-full img {
    transform: scale(1.05);
}

/* 响应式新闻样式 */
@media (max-width: 768px) {
    .news-single {
        margin-top: 30px;
        border-radius: 10px;
    }
}

/* 联系我们页样式 */
.contact-banner {
    height: 80vh;
    background: linear-gradient(rgba(15, 82, 186, 0.7), rgba(15, 82, 186, 0.7)), url('docs/banner-contact.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    padding-top: 80px;
}

.contact-banner h1 {
    font-size: 2.5rem;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.contact-info h3,
.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.contact-details {
    list-style: none;
}

.contact-details li {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.contact-details li i {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-top: 5px;
}

.contact-details li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-details li a:hover {
    color: var(--primary-color);
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(15, 82, 186, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* 地图样式 */
.map-container {
    margin-top: 30px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.map-container iframe {
    width: 100%;
    height: 300px;
    border: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 导航栏响应式 */
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background: var(--primary-color);
        width: 100%;
        text-align: center;
        gap: 20px;
        padding: 30px 0;
        transition: left 0.3s ease;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    /* 汉堡菜单动画 */
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* Banner 响应式 */
    .banner-content h1 {
        font-size: 2rem;
    }

    .banner-content p {
        font-size: 1.2rem;
    }

    /* 章节标题响应式 */
    section h2 {
        font-size: 2rem;
    }

    /* 产品和案例网格响应式 */
    .products-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    /* 联系我们页响应式 */
    .contact-content {
        padding: 20px;
    }

    /* 荣誉板块响应式 */
    .honors-content {
        flex-direction: column;
    }

    .honors-content img {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    /* 导航栏响应式 */
    .navbar {
        padding: 10px 0;
    }

    .logo {
        font-size: 20px;
    }

    .logo img {
        height: 40px;
    }

    /* Banner 响应式 */
    .banner-content h1 {
        font-size: 1.8rem;
    }

    .banner-content p {
        font-size: 1rem;
    }

    /* 按钮响应式 */
    .btn {
        padding: 10px 25px;
        font-size: 14px;
    }

    /* 章节标题响应式 */
    section h2 {
        font-size: 1.8rem;
    }

    /* 页脚响应式 */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }
}

/* 懒加载样式 */
.lazy-load {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lazy-load.loaded {
    opacity: 1;
}

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

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