* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI',Roboto,sans-serif;
}
body {
    color: #333;
    background-color: #f9f9f9;
    line-height: 1.7;
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
header {
    background: #fff;
    box-shadow: 0 1px 3px #eee;
    position: sticky;
    top: 0;
    z-index: 99;
}
.nav-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
.logo {
    font-size: 22px;
    font-weight: 700;
    color: #222;
    text-decoration: none;
}
.nav-links a {
    margin-left: 28px;
    color: #555;
    text-decoration: none;
    font-size: 15px;
    transition: 0.2s;
}
.nav-links a:hover {
    color: #000;
}

/* 首页横幅样式 */
.banner {
    background: #fff;
    padding: 60px 0;
    text-align: center;
    margin-bottom: 40px;
}
.banner h1 {
    font-size: 36px;
    margin-bottom: 12px;
    color: #222;
}
.banner p {
    color: #666;
    font-size: 17px;
    max-width: 600px;
    margin: 0 auto;
}

/* 文章网格列表样式 */
.article-grid {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 30px;
    margin-bottom: 60px;
}
.article-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px #eee;
    transition: 0.3s;
}
.article-card:hover {
    transform: translateY(-5px);
}
.article-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.article-card-content {
    padding: 20px;
}
.article-card-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
}
.article-card-content h3 a {
    color: #222;
    text-decoration: none;
}
.article-card-content p {
    font-size: 14px;
    color: #666;
}

/* 文章详情页样式 */
.post-wrap {
    max-width: 720px;
    margin: 50px auto;
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px #eee;
}
.post-wrap h1 {
    font-size: 30px;
    margin-bottom: 15px;
}
.post-meta {
    color: #999;
    font-size: 14px;
    margin-bottom: 30px;
}
.post-wrap p {
    font-size: 16px;
    margin-bottom: 20px;
}
.post-wrap h2 {
    margin: 35px 0 15px;
    font-size: 22px;
}
.post-wrap img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 20px 0;
}

/* 通用页面样式 */
.page-wrap {
    max-width: 720px;
    margin: 50px auto;
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px #eee;
}
.page-wrap h1 {
    font-size: 30px;
    margin-bottom: 25px;
}
.page-wrap p {
    font-size: 16px;
    margin-bottom: 20px;
    color: #444;
}

/* 404页面样式 */
.error-page {
    text-align: center;
    padding: 100px 20px;
}
.error-page h1 {
    font-size: 80px;
    color: #222;
    margin-bottom: 20px;
}
.error-page p {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
}
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: #222;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    transition: 0.3s;
}
.btn:hover {
    background: #444;
}

/* 页脚样式 */
footer {
    background: #fff;
    padding: 40px 0;
    text-align: center;
    color: #777;
    font-size: 14px;
    margin-top: 60px;
}
footer a {
    color: #555;
    text-decoration: none;
    margin: 0 8px;
}

/* 移动端适配 */
@media(max-width:768px){
    .article-grid {
        grid-template-columns: 1fr;
    }
    .banner h1 {
        font-size: 26px;
    }
    .nav-links a {
        margin-left: 12px;
        font-size: 14px;
    }
    .post-wrap, .page-wrap {
        padding: 20px;
    }
    .error-page h1 {
        font-size: 60px;
    }
}