/* PureGuide 全局样式 无外部依赖 */
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root{
    --bg: #ffffff;
    --text: #222222;
    --light-text: #666;
    --border: #e5e5e5;
    --accent: #3666a8;
}
body{
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
}
a{
    color: inherit;
    text-decoration: none;
}

/* 导航栏 */
.site-nav{
    border-bottom: 1px solid var(--border);
}
.nav-wrap{
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-logo{
    font-size: 1.2rem;
    font-weight: 600;
}
.nav-menu a{
    margin-left: 1.5rem;
    color: var(--light-text);
}
.nav-menu a:hover{
    color: var(--accent);
}

/* 首页引导页 */
.landing-container{
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
}
.landing-title{
    font-size: 3rem;
    margin-bottom: 1rem;
}
.landing-subtitle{
    color: var(--light-text);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}
.landing-btn{
    padding: 0.8rem 2.2rem;
    border: 1px solid var(--text);
    border-radius: 999px;
    transition: 0.2s;
}
.landing-btn:hover{
    background: var(--text);
    color: white;
}

/* 内容容器 */
.container{
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem;
}
.container h2{
    margin-bottom: 2rem;
}

/* 文章列表 */
.post-item{
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border);
}
.post-item h3 a:hover{
    color: var(--accent);
}
.post-meta{
    color: var(--light-text);
    font-size: 0.9rem;
    margin: 0.4rem 0;
}
.post-excerpt{
    color: var(--light-text);
}

/* 文章详情 */
.post-title{
    font-size: 2rem;
    margin-bottom: 1rem;
}
.post-content{
    margin-top: 2rem;
}
.post-content p{
    margin-bottom: 1rem;
}
.post-content img{
    max-width:100%;
}

/* 标签、分类 */
.tag-cloud, .category-list{
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}
.tag-item, .cat-item{
    padding: 0.4rem 1rem;
    border: 1px solid var(--border);
    border-radius: 4px;
}
.tag-item:hover, .cat-item:hover{
    border-color: var(--accent);
    color: var(--accent);
}

/* 分页 */
.pagination{
    margin-top: 3rem;
    display: flex;
    gap: 1rem;
}
.pagination a{
    padding: 0.5rem 1rem;
    border:1px solid var(--border);
}

/* 搜索 */
.search-input{
    width:100%;
    padding:0.8rem;
    border:1px solid var(--border);
    border-radius:4px;
    font-size:1rem;
}

/* 页脚 */
.site-footer{
    max-width:900px;
    margin:0 auto;
    padding:2rem;
    text-align:center;
    color:var(--light-text);
    font-size:0.9rem;
}

/* 移动端适配 */
@media (max-width:640px){
    .nav-wrap{
        flex-direction: column;
        gap:1rem;
    }
    .landing-title{
        font-size:2rem;
    }
}
/* ========== 新增：引导页头像 ========== */
.landing-avatar{
    margin-bottom: 1.5rem;
}
.landing-avatar img{
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border);
}

/* ========== 新增：文章上下篇导航 ========== */
.post-nav{
    margin-top: 4rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    border-top: 1px solid var(--border);
    padding-top: 2rem;
}
.post-nav-item{
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: 0.2s;
}
.post-nav-item:hover{
    border-color: var(--accent);
}
.post-nav-item.empty{
    border: none;
}
.post-nav-item.prev{
    text-align: left;
}
.post-nav-item.next{
    text-align: right;
}
.post-nav-item span{
    font-size: 0.9rem;
    color: var(--light-text);
    display: block;
    margin-bottom: 0.3rem;
}

/* ========== 新增：评论区容器 ========== */
.giscus-wrap{
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}
.giscus-wrap h3{
    margin-bottom: 1.5rem;
}

@media (max-width:640px){
    .post-nav{
        grid-template-columns: 1fr;
    }
    .post-nav-item.next{
        text-align: left;
    }
    .landing-avatar img{
        width: 90px;
        height: 90px;
    }
}
/* 归档页面美化样式 */
.archive-wrap{
    max-width: 800px;
    margin: 4rem auto;
    padding: 0 20px;
}
.archive-title{
    font-size: 28px;
    margin-bottom: 40px;
}
.archive-year{
    margin-bottom: 36px;
}
.archive-year-title{
    font-size:20px;
    color:#222;
    margin-bottom:16px;
    padding-bottom:6px;
    border-bottom: 1px solid #eee;
}
.archive-items{
    list-style: none;
    padding-left: 8px;
}
.archive-item{
    display:flex;
    align-items:center;
    padding: 10px 0;
    transition: 0.2s;
}
.archive-item:hover{
    background-color: #f7f8fa;
    border-radius:6px;
    padding-left:8px;
}
.archive-date{
    color:#666;
    font-size:14px;
    min-width: 86px;
}
.archive-link{
    color:#333;
    text-decoration: none;
}
.archive-link:hover{
    color:#2563eb;
    text-decoration: underline;
}
.archive-empty{
    text-align:center;
    margin-top:80px;
    color:#888;
    font-size:16px;
}
@media screen and (max-width: 640px){
    .archive-item{
        flex-direction: column;
        align-items: flex-start;
        gap:4px;
    }
    .archive-date{
        min-width:auto;
    }
}
/* 友链页面样式（可选择性添加） */
.friends-items {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 30px;
}
.friend-item {
  border: 1px solid #eee;
  border-radius: 8px;
  transition: 0.25s ease;
}
.friend-item:hover {
  border-color: #ccc;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.friend-link {
  display: block;
  padding: 16px;
  text-decoration: none;
  color: #333;
}
.friend-name {
  display: block;
  font-weight: 500;
  font-size: 16px;
  margin-bottom: 6px;
}
.friend-desc {
  font-size: 13px;
  color: #666;
}
/* 面包屑 */
.breadcrumb {
    font-size: 0.9rem;
    color:#666;
    margin-bottom: 12px;
}
.breadcrumb a {
    color:#444;
    text-decoration: none;
}
.breadcrumb a:hover {
    text-decoration: underline;
}
.breadcrumb-sep {
    margin:0 6px;
}
.breadcrumb-current {
    color:#888;
}

/* 文章标签 */
.post-tags {
    margin-top:6px;
}
.tag-item {
    display:inline-block;
    margin:0 4px;
    padding:2px 6px;
    font-size:0.8rem;
    color:#555;
    background:#f3f3f3;
    border-radius:4px;
    text-decoration:none;
}
.tag-item:hover{
    background:#e5e5e5;
}