/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 顶部导航栏 */
header {
    background-color: #165DFF;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    text-decoration: none;
    color: white;
}

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

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-size: 1rem;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.8;
}

/* 合规提示条 */
.compliance-bar {
    background-color: #fff3cd;
    color: #856404;
    padding: 0.8rem 0;
    text-align: center;
    border: 1px solid #ffeeba;
    font-weight: 500;
}

/* 主要内容区 */
main {
    padding: 2rem 0;
    min-height: calc(100vh - 220px);
}

/* 首页样式 */
.hero {
    background-color: #eef2ff;
    padding: 3rem 0;
    text-align: center;
    margin-bottom: 2rem;
    border-radius: 8px;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #165DFF;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
}

.section-title {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #333;
    border-bottom: 2px solid #165DFF;
    padding-bottom: 0.5rem;
}

/* 文章卡片样式 */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.article-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

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

.article-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.article-content {
    padding: 1.5rem;
}

.article-title {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: #333;
}

.article-excerpt {
    color: #666;
    margin-bottom: 1rem;
}

.article-meta {
    font-size: 0.9rem;
    color: #888;
}

.read-more {
    display: inline-block;
    color: #165DFF;
    text-decoration: none;
    font-weight: 500;
    margin-top: 0.5rem;
}

/* 标签样式 */
.tags {
    margin: 2rem 0;
}

.tag {
    display: inline-block;
    background-color: #e1edff;
    color: #165DFF;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    text-decoration: none;
}

/* 问答区域样式 */
.qa-item {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.qa-question {
    font-weight: 600;
    color: #165DFF;
    margin-bottom: 0.5rem;
}

/* 单篇文章样式 */
.article-header {
    margin-bottom: 2rem;
}

.article-full-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #333;
}

.article-full-img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.article-body {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
}

.article-body p {
    margin-bottom: 1.5rem;
}

.article-body h2 {
    margin: 2rem 0 1rem;
    color: #165DFF;
}

/* 表单样式 */
.contact-form, .question-form {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

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

.btn {
    display: inline-block;
    background-color: #165DFF;
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #0e4cca;
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section p {
    color: #ddd;
    margin-bottom: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: #ddd;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.copyright {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid #444;
    color: #aaa;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
    }
    
    .nav-links {
        margin-top: 1rem;
    }
    
    .nav-links li {
        margin: 0 0.5rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
}