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

body {
    font-family: "Georgia", "SimHei", "Heiti SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: #333;
    background: #fff;
    line-height: 1.8;
}

.page-wrapper {
    display: flex;
    min-height: 100vh;
}

/* ========== 左侧文章列表 ========== */
.sidebar {
    width: 240px;
    min-width: 240px;
    padding: 40px 28px;
    border-right: 1px solid #ddd;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 0.05em;
    color: #111;
}

.sidebar ul {
    list-style: none;
}

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

.sidebar ul li a {
    text-decoration: none;
    color: #555;
    font-size: 0.95rem;
    display: block;
    padding: 4px 0;
    transition: color 0.15s;
}

.sidebar ul li a:hover {
    color: #000;
}

.sidebar ul li a .date {
    font-size: 0.78rem;
    color: #999;
    display: block;
    margin-top: 1px;
}

/* ========== 分割线区域 ========== */
/* 分割线已由 .sidebar 的 border-right 实现 */

/* ========== 右侧文章内容 ========== */
.main-content {
    flex: 1;
    padding: 40px 48px;
    max-width: 720px;
}

.article-section {
    margin-bottom: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid #eee;
}

.article-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.article-section h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #111;
}

.article-meta {
    font-size: 0.82rem;
    color: #999;
    margin-bottom: 20px;
}

.article-section p {
    font-size: 0.98rem;
    margin-bottom: 16px;
    color: #444;
}

.article-section blockquote {
    border-left: 2px solid #ccc;
    margin: 16px 0;
    padding: 8px 16px;
    color: #666;
    font-style: italic;
}

.back-to-top {
    display: inline-block;
    margin-top: 10px;
    font-size: 0.82rem;
    text-decoration: none;
    color: #999;
    border-bottom: 1px dotted #ccc;
}

.back-to-top:hover {
    color: #333;
    border-bottom-color: #333;
}

/* ========== 响应式：小屏幕时上下布局 ========== */
@media (max-width: 640px) {
    .page-wrapper {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        min-width: 100%;
        height: auto;
        position: static;
        border-right: none;
        border-bottom: 1px solid #ddd;
        padding: 24px 20px;
    }

    .main-content {
        padding: 24px 20px;
        max-width: 100%;
    }
}
a:link{
    color:#00ddff;
    text-decoration:none;
}
a:visited{
    color:#00ddff;
    text-decoration:none;
}
a:hover{
    color:#00ddff;
    text-decoration:none;
}
a:active{
    color:#00ddff;
    text-decoration:none;
}