/* ===== 全局变量 - 参考 1900.live 的"月牙白"主题 ===== */
:root {
    /* 配色方案 */
    --color-primary: #1a73e8;
    --color-primary-dark: #0d6efd;
    --color-primary-light: #5a67d8;
    --color-accent: #4caf50;
    --color-accent-light: #66bb6a;
    --color-background-left: linear-gradient(135deg, #f8f9ff 0%, #f0f3fb 100%);
    --color-background-main: #ffffff;
    --color-background-right: #f9fcff;
    --color-background-alt: #fcfdff;
    --color-border: #e9ecef;
    --color-border-light: #f1f3f5;
    --color-text: #495057;
    --color-text-light: #6c757d;
    --color-text-muted: #868e96;
    --color-link: #1a73e8;
    --color-link-hover: #0d6efd;
    --color-code-bg: #f8f9fa;
    --color-shadow: rgba(0, 0, 0, 0.05);
    --color-brand-orange: #ff9800;

    /* 布局尺寸 */
    --nav-width: 260px;
    --sidebar-width: 240px;
    --max-content-width: 720px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2.5rem;
    --border-radius: 8px;
    --border-radius-sm: 4px;

    /* 字体 */
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-family-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, "Courier New", monospace;
    --font-size-base: 15px;
    --font-size-sm: 13px;
    --font-size-xs: 12px;
    --font-size-lg: 18px;
    --line-height-base: 1.7;
    --line-height-heading: 1.4;
}

/* 深色模式 */
[data-theme='dark'] {
    --color-primary: #f0f0f5;
    --color-primary-dark: #ffffff;
    --color-primary-light: #d0d0d5;
    --color-accent: #4ade80;
    --color-accent-light: #22c55e;
    --color-background-left: #0a0a0f;
    --color-background-main: #050508;
    --color-background-right: #0d0d12;
    --color-background-alt: #15151f;
    --color-border: #4a4a5a;
    --color-border-light: #5a5a6a;
    --color-text: #f5f5f5;
    --color-text-light: #e0e0e5;
    --color-text-muted: #b0b0b8;
    --color-link: #4ade80;
    --color-link-hover: #22c55e;
    --color-code-bg: #1a1a22;
    --color-shadow: rgba(0, 0, 0, 0.6);
    --color-brand-orange: #ffb74d;
}

/* 自动暗色模式：根据系统偏好 */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme='light']) {
        --color-primary: #f0f0f5;
        --color-primary-dark: #ffffff;
        --color-primary-light: #d0d0d5;
        --color-accent: #4ade80;
        --color-accent-light: #22c55e;
        --color-background-left: #0a0a0f;
        --color-background-main: #050508;
        --color-background-right: #0d0d12;
        --color-background-alt: #15151f;
        --color-border: #4a4a5a;
        --color-border-light: #5a5a6a;
        --color-text: #f5f5f5;
        --color-text-light: #e0e0e5;
        --color-text-muted: #b0b0b8;
        --color-link: #4ade80;
        --color-link-hover: #22c55e;
        --color-code-bg: #1a1a22;
        --color-shadow: rgba(0, 0, 0, 0.6);
        --color-brand-orange: #ffb74d;
    }
}

/* ===== 重置样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background-main);
    min-height: 100vh;
    transition: color 0.15s ease, background-color 0.15s ease;
}

a {
    color: var(--color-link);
    text-decoration: none;
    transition: color 0.15s ease;
}

a:hover {
    color: var(--color-link-hover);
}

img {
    max-width: 100%;
    height: auto;
}

ul, ol {
    list-style: none;
}

/* ===== Header - 极简顶部 ===== */
.site-header {
    background-color: var(--color-background-main);
    border-bottom: 1px solid var(--color-border-light);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 2px var(--color-shadow);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    transition: color 0.2s ease;
    letter-spacing: -0.5px;
}

.site-title:hover {
    color: var(--color-primary-dark);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all 0.3s ease;
}

/* ===== 三栏布局容器 ===== */
.site-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: var(--nav-width) 1fr var(--sidebar-width);
    gap: var(--spacing-lg);
    min-height: calc(100vh - 60px);
    align-items: start;
}

/* ===== 左栏：导航 ===== */
.site-nav {
    position: sticky;
    top: 70px;
    height: fit-content;
    max-height: calc(100vh - 90px);
    overflow-y: auto;
    padding: var(--spacing-lg);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* 搜索框 */
.nav-search {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.nav-search input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-right: 36px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--color-text);
    transition: all 0.2s ease;
}

.nav-search input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

.nav-search button {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 4px;
}

.nav-search button:hover {
    color: var(--color-primary);
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-background-main);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    margin-top: 4px;
    max-height: 300px;
    overflow-y: auto;
    display: none;
    z-index: 1000;
    box-shadow: 0 4px 12px var(--color-shadow);
}

.search-results.active {
    display: block;
}

/* 导航分组 */
.nav-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.nav-section-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
}

.nav-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    transition: all 0.2s ease;
    font-size: var(--font-size-sm);
}

.nav-list a:hover {
    background-color: rgba(26, 115, 232, 0.1);
    color: var(--color-primary);
}

.nav-list a.active {
    background-color: rgba(26, 115, 232, 0.15);
    color: var(--color-primary);
    font-weight: 500;
    border-left: 3px solid var(--color-primary);
    padding-left: calc(var(--spacing-md) - 3px);
}

.nav-list .count {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    opacity: 0.8;
}

.nav-list a.active .count {
    color: var(--color-primary);
}

/* 标签云 */
.nav-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    overflow: visible;
    width: 100%;
}

.tag {
    padding: 4px 10px;
    background-color: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--color-border-light);
    border-radius: 20px;
    font-size: var(--font-size-xs);
    color: var(--color-text);
    transition: all 0.2s ease;
}

.tag:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

/* 关于链接 */
.nav-about-link {
    padding: var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
    text-align: center;
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: all 0.2s ease;
}

.nav-about-link:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--color-shadow);
}

/* ===== 中栏：主内容 - 纯白背景 ===== */
.site-main {
    max-width: var(--max-content-width);
    margin: 0 auto;
}

/* 首页个人介绍区 */
.hero-section {
    padding: var(--spacing-xl) 0;
    text-align: left;
}

.hero-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.5px;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.hero-intro {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.hero-interests {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.hero-social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
}

.hero-social a {
    color: var(--color-text-muted);
    transition: all 0.2s ease;
    padding: 12px;
    border-radius: var(--border-radius);
    min-width: 48px;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-social a:hover {
    color: var(--color-primary);
    background-color: rgba(26, 115, 232, 0.1);
    transform: translateY(-2px);
}

.hero-social svg {
    width: 24px;
    height: 24px;
}

.page-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-border-light);
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.5px;
}

.page-description {
    color: var(--color-text-light);
    font-size: var(--font-size-lg);
    line-height: 1.6;
}

/* 微博客样式 */
.memos-widget {
    background-color: var(--color-background-alt);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.memos-widget .widget-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-border);
}

.memos-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    width: 100%;
    overflow: visible;
}

.memos-loading,
.memos-empty,
.memos-error {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    text-align: center;
    padding: var(--spacing-md);
}

.memo-item {
    padding: var(--spacing-md);
    background-color: var(--color-background);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--color-accent);
}

.memo-content {
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.memo-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* 时间线文章列表 */
.posts-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.post-card {
    position: relative;
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border-light);
}

.post-card:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.post-meta svg {
    width: 14px;
    height: 14px;
}

.post-date {
    font-weight: 500;
    color: var(--color-primary-light);
}

.post-categories {
    display: flex;
    gap: var(--spacing-sm);
}

.category {
    padding: 2px 8px;
    background-color: rgba(26, 115, 232, 0.08);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    font-weight: 500;
}

.post-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-heading);
    letter-spacing: -0.3px;
}

.post-title a {
    color: var(--color-text);
}

.post-title a:hover {
    color: var(--color-primary);
}

.post-excerpt {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-base);
    font-size: var(--font-size-base);
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.post-tags .tag {
    background-color: var(--color-background-alt);
    border-color: var(--color-border-light);
    padding: 3px 8px;
    font-size: var(--font-size-xs);
}

.post-read-more {
    color: var(--color-primary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 8px 0;
    min-height: 40px;
}

.post-read-more:hover {
    color: var(--color-primary-dark);
}

.post-read-more::after {
    content: "→";
    transition: transform 0.2s ease;
}

.post-read-more:hover::after {
    transform: translateX(4px);
}

/* 分类文章列表 */
.category-posts {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.post-item {
    padding: var(--spacing-lg);
    background-color: var(--color-background-main);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
}

.post-item:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px var(--color-shadow);
    transform: translateY(-2px);
}

/* 文章详情页 */
.post-full {
    background-color: var(--color-background-main);
}

.post-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.post-full .post-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.post-full .post-meta {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.post-featured-image {
    margin-bottom: var(--spacing-xl);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.post-featured-image img {
    width: 100%;
    height: auto;
    display: block;
}

.post-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text);
}

.post-content h2,
.post-content h3,
.post-content h4 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    font-weight: 600;
    letter-spacing: -0.3px;
}

.post-content h2 {
    font-size: 1.6rem;
}

.post-content h3 {
    font-size: 1.4rem;
}

.post-content h4 {
    font-size: 1.2rem;
}

.post-content p {
    margin-bottom: var(--spacing-md);
}

.post-content a {
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

.post-content a:hover {
    text-decoration-thickness: 2px;
}

.post-content ul,
.post-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.post-content li {
    margin-bottom: var(--spacing-sm);
}

.post-content blockquote {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md) var(--spacing-lg);
    border-left: 4px solid var(--color-primary);
    background-color: var(--color-background-alt);
    font-style: italic;
    color: var(--color-text-light);
}

.post-content code {
    font-family: var(--font-family-mono);
    font-size: 0.9em;
    padding: 2px 6px;
    background-color: var(--color-code-bg);
    border-radius: var(--border-radius-sm);
    color: var(--color-primary-dark);
}

.post-content pre {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
    background-color: var(--color-code-bg);
    border-radius: var(--border-radius);
    overflow-x: auto;
    border: 1px solid var(--color-border-light);
}

.post-content pre code {
    background: none;
    padding: 0;
    color: var(--color-text);
}

.post-content table {
    width: 100%;
    margin: var(--spacing-lg) 0;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.post-content th,
.post-content td {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border-light);
}

.post-content th {
    background-color: var(--color-background-alt);
    font-weight: 600;
    color: var(--color-text);
}

.post-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border-light);
}

.post-navigation {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.prev-post,
.next-post {
    flex: 1;
    padding: var(--spacing-md);
    background-color: var(--color-background-alt);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
}

.prev-post:hover,
.next-post:hover {
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px var(--color-shadow);
}

.nav-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-title {
    font-weight: 600;
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

.related-posts {
    padding: var(--spacing-lg);
    background-color: var(--color-background-alt);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
}

.related-posts h3 {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
    color: var(--color-text);
    font-weight: 600;
}

.related-posts ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.related-posts li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.related-posts li a {
    font-weight: 500;
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

.related-posts li time {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ===== 右栏：侧边栏 ===== */
.site-sidebar {
    position: sticky;
    top: 70px;
    height: fit-content;
    max-height: calc(100vh - 90px);
    overflow-y: auto;
    overflow-x: hidden;
}

/* 自定义侧边栏滚动条样式 - 更精致 */
.site-sidebar::-webkit-scrollbar {
    width: 4px;
}

.site-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.site-sidebar::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 2px;
}

.site-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.sidebar-widget {
    padding: var(--spacing-lg);
}

.widget-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
    letter-spacing: 0.3px;
}

/* Tags 列表 - 纯文本链接样式 */
.tags-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    list-style: none;
    margin: 0;
    padding: 0;
}

.tags-list li {
    margin: 0;
}

.tag-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    color: var(--color-link);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all 0.2s ease;
}

.tag-link:hover {
    color: var(--color-link-hover);
    text-decoration: underline;
}

.tag-count {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

/* 作者简介 */
.author-widget {
    text-align: center;
    background: linear-gradient(135deg, var(--color-background-right) 0%, var(--color-background-alt) 100%);
}

.author-avatar {
    margin-bottom: var(--spacing-md);
}

.author-avatar img {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    margin: 0 auto;
    border: 3px solid var(--color-primary);
    box-shadow: 0 4px 8px var(--color-shadow);
}

.avatar-placeholder {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    font-size: 1.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    box-shadow: 0 4px 8px var(--color-shadow);
}

.author-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.3px;
}

.author-bio {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-base);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.social-links a {
    color: var(--color-text-muted);
    transition: all 0.2s ease;
    padding: 10px;
    border-radius: var(--border-radius-sm);
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-links a:hover {
    color: var(--color-primary);
    background-color: rgba(26, 115, 232, 0.1);
    transform: translateY(-2px);
}

.social-links svg {
    width: 20px;
    height: 20px;
}

/* 最新文章 */
.recent-posts {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.recent-posts li {
    border-bottom: 1px solid var(--color-border-light);
    padding-bottom: var(--spacing-sm);
}

.recent-posts li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.recent-post-link {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
    color: var(--color-text);
    padding: 4px 0;
}

.recent-post-link:hover {
    color: var(--color-primary);
}

.post-date {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    white-space: nowrap;
    min-width: 60px;
}

.post-title {
    flex: 1;
    font-weight: 500;
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

/* 归档列表 */
.archives-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.archives-list li {
    border-bottom: 1px solid var(--color-border-light);
    padding-bottom: var(--spacing-sm);
}

.archives-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.archive-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text);
    padding: 4px 0;
}

.archive-link:hover {
    color: var(--color-primary);
}

.archive-link .count {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* 统计信息 */
.stats-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background-color: var(--color-background-main);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border-light);
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

.stat-value {
    font-weight: 600;
    color: var(--color-primary);
    font-size: var(--font-size-sm);
}

/* 热力图 */
.heatmap {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.heatmap-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 3px;
}

.heatmap-cell {
    aspect-ratio: 1;
    width: 14px;
    height: 14px;
    border-radius: 2px;
    background-color: var(--color-border-light);
    transition: transform 0.2s ease, opacity 0.2s ease;
    cursor: pointer;
}

.heatmap-cell:hover {
    transform: scale(1.3);
    opacity: 0.9;
}

.heatmap-cell.level-1 {
    background-color: #9be9a8;
}

.heatmap-cell.level-2 {
    background-color: #40c463;
}

.heatmap-cell.level-3 {
    background-color: #30a14e;
}

.heatmap-cell.level-4 {
    background-color: #216e39;
}

.heatmap-legend {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.heatmap-legend-spans {
    display: flex;
    gap: 2px;
}

.heatmap-legend-span {
    width: 8px;
    height: 8px;
    border-radius: 2px;
}

/* TOP 按钮 */
.top-link {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-background-main);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: 50;
    box-shadow: 0 2px 8px var(--color-shadow);
}

.top-link.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.top-link:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--color-shadow);
}

/* ===== Footer ===== */
.site-footer {
    background-color: var(--color-background-alt);
    border-top: 1px solid var(--color-border-light);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

.footer-content p {
    margin-bottom: var(--spacing-xs);
}

.footer-content a {
    color: var(--color-primary);
}

/* ===== 分页 ===== */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.pagination a,
.pagination span {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    transition: all 0.2s ease;
}

.pagination a:hover,
.pagination span.current {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.pagination span.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ===== 评论区域 ===== */
.comments-section {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--color-background-alt);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
}

.comments-section h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    font-weight: 600;
    font-size: 1.1rem;
}

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
    .site-container {
        grid-template-columns: var(--nav-width) 1fr;
    }

    .site-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    /* 全局字体调整 */
    :root {
        --font-size-base: 16px;
        --font-size-sm: 14px;
        --font-size-xs: 13px;
    }

    .site-container {
        grid-template-columns: 1fr;
        padding: var(--spacing-sm);
    }

    /* 导航菜单优化 */
    .site-nav {
        display: none;
        position: fixed;
        top: 50px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-background-left);
        z-index: 99;
        padding: var(--spacing-md);
        overflow-y: auto;
        border-radius: 0;
        animation: slideIn 0.3s ease;
    }

    @keyframes slideIn {
        from {
            transform: translateX(-100%);
        }
        to {
            transform: translateX(0);
        }
    }

    .site-nav.active {
        display: block;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu-toggle span {
        width: 28px;
        height: 3px;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    /* 导航链接增大触摸目标 */
    .nav-list a {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
        min-height: 44px;
    }

    .nav-about-link {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
        min-height: 44px;
    }

    .tag {
        padding: 8px 14px;
        font-size: var(--font-size-sm);
        min-height: 36px;
        display: inline-flex;
        align-items: center;
        white-space: normal;
        word-break: break-word;
        max-width: 100%;
    }

    /* 主内容区优化 */
    .site-main {
        max-width: 100%;
        overflow-x: hidden;
        padding: 0 var(--spacing-xs);
    }

    .hero-section {
        padding: var(--spacing-md) 0;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-intro,
    .hero-interests {
        font-size: 1rem;
    }

    .page-title {
        font-size: 1.5rem;
    }

    .page-description {
        font-size: var(--font-size-base);
    }

    /* 文章卡片优化 */
    .post-title {
        font-size: 1.3rem;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .post-excerpt {
        font-size: var(--font-size-base);
        line-height: 1.7;
    }

    .post-card {
        padding-bottom: var(--spacing-lg);
        padding: var(--spacing-md);
        margin: 0 calc(-1 * var(--spacing-xs));
        border-radius: var(--border-radius);
        background-color: var(--color-background-main);
    }

    /* 文章详情页优化 */
    .post-full .post-title {
        font-size: 1.5rem;
    }

    .post-content {
        font-size: 1rem;
        line-height: 1.8;
    }

    .post-content h2 {
        font-size: 1.4rem;
    }

    .post-content h3 {
        font-size: 1.25rem;
    }

    .post-content h4 {
        font-size: 1.1rem;
    }

    .post-content pre {
        overflow-x: auto;
        font-size: 0.85rem;
        padding: var(--spacing-md);
    }

    .post-content table {
        font-size: var(--font-size-sm);
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
        min-width: 100%;
    }

    .post-content table thead,
    .post-content table tbody,
    .post-content table tr,
    .post-content table td,
    .post-content table th {
        display: table-cell;
    }

    .post-content table thead {
        display: table-header-group;
    }

    .post-content table tbody {
        display: table-row-group;
    }

    .post-content table tr {
        display: table-row;
    }

    /* 文章导航优化 */
    .post-navigation {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .prev-post,
    .next-post {
        min-height: 60px;
    }

    /* 侧边栏在移动端显示在底部 */
    .sidebar {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
        margin-top: var(--spacing-xl);
    }

    .sidebar-widget {
        padding: var(--spacing-md);
    }

    .widget-title {
        font-size: var(--font-size-base);
    }

    /* 作者信息优化 */
    .author-avatar img,
    .avatar-placeholder {
        width: 64px;
        height: 64px;
    }

    .author-name {
        font-size: 1rem;
    }

    .author-bio {
        font-size: var(--font-size-sm);
    }

    /* 社交链接优化 */
    .social-links a {
        padding: 8px;
    }

    .social-links svg {
        width: 24px;
        height: 24px;
    }

    /* 热力图优化 */
    .heatmap-grid {
        gap: 2px;
    }

    .heatmap-cell {
        width: 14px;
        height: 14px;
    }

    /* 分页优化 */
    .pagination {
        gap: var(--spacing-xs);
    }

    .pagination a,
    .pagination span {
        min-width: 40px;
        min-height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: var(--font-size-sm);
    }

    /* 标签云优化 */
    .taxonomy-tag {
        padding: 0.5rem 1rem;
        font-size: var(--font-size-sm);
    }

    /* 归档页优化 */
    .archive-year-title {
        font-size: 1.3rem;
    }

    .archive-month-title {
        font-size: 1rem;
    }

    .archive-post-title {
        font-size: var(--font-size-base);
    }

    /* 友链优化 */
    .friend-links {
        grid-template-columns: 1fr;
    }

    .friend-card {
        padding: var(--spacing-md);
        min-height: 72px;
    }

    .friend-avatar {
        width: 56px;
        height: 56px;
    }

    .friend-name {
        font-size: 1rem;
    }

    .friend-desc {
        font-size: var(--font-size-sm);
    }

    /* 评论区域优化 */
    .comments-section {
        padding: var(--spacing-md);
    }

    /* 搜索结果优化 */
    .search-results {
        max-height: 250px;
        font-size: var(--font-size-sm);
    }

    /* 头部优化 */
    .header-content {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .site-title {
        font-size: 1.1rem;
    }

    /* Footer 优化 */
    .site-footer {
        padding: var(--spacing-md) 0;
    }

    .footer-content {
        padding: 0 var(--spacing-md);
    }

    /* TOP 按钮优化 */
    .top-link {
        display: none;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-base: 15px;
        --font-size-sm: 13px;
        --font-size-xs: 12px;
    }

    .hero-title {
        font-size: 1.3rem;
    }

    .post-title {
        font-size: 1.2rem;
    }

    .post-full .post-title {
        font-size: 1.3rem;
    }

    .page-title {
        font-size: 1.3rem;
    }

    .nav-list a {
        font-size: var(--font-size-sm);
    }

    .nav-tags {
        gap: var(--spacing-xs);
    }

    .tag {
        padding: 6px 12px;
        font-size: var(--font-size-xs);
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-background-alt);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ===== 标签云样式 ===== */
.taxonomy-page {
    padding: var(--spacing-lg) 0;
}

.taxonomy-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
    justify-content: flex-start;
}

.taxonomy-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 0.8rem;
    background-color: var(--color-background-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.2s ease;
    line-height: 1.4;
}

[data-theme='dark'] .taxonomy-tag {
    background-color: #4a4a55;
    border-color: #5a5a65;
    color: #ffffff;
}

.taxonomy-tag:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.taxonomy-tag .count {
    display: inline-block;
    margin-left: var(--spacing-xs);
    padding: 0.1rem 0.4rem;
    background-color: var(--color-border);
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    line-height: 1;
}

[data-theme='dark'] .taxonomy-tag .count {
    background-color: #6a6a75;
    color: #ffffff;
}

.taxonomy-tag:hover .count {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
}

/* ===== 归档页样式 ===== */
.archives-page {
    padding: var(--spacing-lg) 0;
}

.archive-year {
    margin-bottom: var(--spacing-xl);
}

.archive-year-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-border);
}

.archive-month {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-md);
}

.archive-month-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.archive-month-posts {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.archive-post {
    display: flex;
    align-items: flex-start;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-background-alt);
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
}

.archive-post:hover {
    background-color: var(--color-border-light);
    transform: translateX(4px);
}

.archive-post-date {
    flex-shrink: 0;
    width: 50px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-family: var(--font-family-mono);
    line-height: 1.4;
}

.archive-post-title {
    flex: 1;
    margin-left: var(--spacing-md);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.2s ease;
    line-height: 1.4;
}

.archive-post-title:hover {
    color: var(--color-primary);
}

.archive-post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-md);
    margin-top: var(--spacing-xs);
}

.archive-post-tags .tag {
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    background-color: var(--color-background-main);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-muted);
    text-decoration: none;
    transition: all 0.2s ease;
}

.archive-post-tags .tag:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* ===== 友链样式 ===== */
.friend-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.friend-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-background-main);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    text-decoration: none;
    color: var(--color-text);
}

.friend-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px var(--color-shadow);
    transform: translateY(-4px);
}

.friend-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-border-light);
    flex-shrink: 0;
    transition: border-color 0.3s ease;
}

.friend-card:hover .friend-avatar {
    border-color: var(--color-primary);
}

.friend-info {
    flex: 1;
    min-width: 0;
}

.friend-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.friend-card:hover .friend-name {
    color: var(--color-primary);
}

.friend-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

@media (max-width: 768px) {
    .friend-links {
        grid-template-columns: 1fr;
    }
}

/* ===== 主题切换按钮 ===== */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.theme-toggle {
    position: relative;
    width: 40px;
    height: 40px;
    border: none;
    background: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    background-color: var(--color-background-main);
    border: 1px solid var(--color-border);
}

.theme-toggle:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.theme-toggle svg {
    position: absolute;
    color: var(--color-text);
    transition: all 0.3s ease;
}

.theme-toggle .sun-icon {
    opacity: 1;
    transform: rotate(0deg);
}

.theme-toggle .moon-icon {
    opacity: 0;
    transform: rotate(-90deg);
}

[data-theme='dark'] .theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(90deg);
}

[data-theme='dark'] .theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0deg);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme='light']) .theme-toggle .sun-icon {
        opacity: 0;
        transform: rotate(90deg);
    }

    :root:not([data-theme='light']) .theme-toggle .moon-icon {
        opacity: 1;
        transform: rotate(0deg);
    }
}

/* 响应式设计更新 */
@media (max-width: 768px) {
    .header-actions {
        gap: var(--spacing-sm);
    }

    .mobile-menu-toggle {
        display: flex;
    }
}