/* 全局样式设置 */
/* 设置根字体大小、主色调、辅助色和点缀色 */
:root {
    --primary-color: #032B44; /* 主色调：深蓝色，象征科技与信任 */
    --secondary-color: #96E5C7; /* 辅助色：薄荷绿，传递环保理念 */
    --background-color: #F7F7F7; /* 背景色：浅灰色，提升整体简洁感 */
    --accent-color: #FFA500; /* 点缀色：橙黄色，突出重要元素 */
}

/* 设置全局字体、背景和文字颜色 */
body {
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--primary-color);
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--primary-color);
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.navbar .logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.navbar ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.navbar ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.navbar ul li a:hover {
    color: var(--accent-color);
}

/* 主内容区样式 */
.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 100px 20px 20px 20px; /* 顶部留出导航栏空间 */
}

/* 头图区样式 */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: 100px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    animation: fadeIn 2s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-text {
    max-width: 500px;
}

.hero-text h1 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.hero-text p {
    font-size: 1rem;
}

/* 服务介绍区样式 */
.services-section {
    padding: 50px 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.services-section h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.service-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.service-item img {
    width: 80px;
    height: 80px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.service-item h3 {
    font-size: 1.2rem;
    color: var(--secondary-color);
}

.service-item p {
    font-size: 0.9rem;
}

/* 用户案例区样式 */
.cases-section {
    padding: 50px 20px;
    background: linear-gradient(135deg, var(--secondary-color), #e0f7fa);
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.cases-section h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.card-container {
    display: flex;
    overflow-x: auto;
    padding: 20px 0;
    gap: 20px;
}

.card {
    min-width: 300px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
}

.card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

.card-content {
    padding: 15px;
}

.card-content h3 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.card-content p {
    font-size: 0.9rem;
    color: #555;
}

/* 文章区样式 */
.article-section {
    padding: 50px 20px;
}

.article-section h2, .article-section h3, .article-section h4 {
    color: var(--primary-color);
}

.article-section p {
    font-size: 1rem;
    margin-bottom: 20px;
}

.article-section pre {
    background-color: #f0f0f0;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

.article-section code {
    font-family: 'Courier New', Courier, monospace;
    color: #c7254e;
}

/* 图片样式 */
.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.image-gallery img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.image-gallery img:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* 底部样式 */
.footer {
    padding: 20px;
    background-color: var(--primary-color);
    color: #fff;
    text-align: center;
}

.footer a {
    color: var(--accent-color);
    text-decoration: none;
    margin: 0 10px;
}

.footer a:hover {
    text-decoration: underline;
}

/* 章节导航样式 */
.nav-sidebar {
    position: fixed;
    top: 60px;
    left: 20px;
    width: 200px;
}

.nav-sidebar ul {
    list-style: none;
    padding: 0;
}

.nav-sidebar ul li {
    margin-bottom: 10px;
}

.nav-sidebar ul li a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.nav-sidebar ul li a:hover {
    color: var(--accent-color);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .navbar ul {
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: center;
    }
    .nav-sidebar {
        display: none;
    }
    .hero-section {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 100px 10px 10px 10px;
    }
    .hero-section {
        padding: 80px 10px;
    }
    .hero-text h1 {
        font-size: 1.5rem;
    }
    .navbar .logo {
        font-size: 1.2rem;
    }
}