/*
Theme Name: 智技帮 Green Business
Theme URI: https://www.zhijibang.com
Description: 智技帮教程网专用主题 - 绿灰商务风格，独立经典主题
Author: 智技帮团队
Version: 1.1.0
Text Domain: zhijibang-green
*/

/* =============================================
   1. CSS 变量（严格遵循视觉规范色值）
   ============================================= */
:root {
    /* 主色 */
    --color-primary: #1F5F44;
    --color-primary-hover: #184A35;
    --color-primary-light: #B8D4C8;
    --color-primary-bg: #EDF2F0;

    /* 文字色 */
    --color-text-heading: #3A4047;
    --color-text-body: #5A6068;
    --color-text-white: #FFFFFF;

    /* 背景色 */
    --color-bg-page: #F5F7F9;
    --color-bg-white: #FFFFFF;
    --color-bg-ad: #F0F4F2;
    --color-bg-label: #EDF2F0;

    /* 边框与分割线 */
    --color-border: #D0D5DD;
    --color-border-light: #B8D4C8;

    /* 布局尺寸 */
    --container-width: 1100px;
    --content-width: 730px;
    --sidebar-width: 300px;
    --nav-height: 60px;
    --nav-height-mobile: 52px;

    /* 圆角 */
    --radius-card: 10px;
    --radius-btn: 8px;
    --radius-sm: 6px;

    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 22px;
    --font-size-xxl: 26px;
    --font-size-hero: 32px;
}

/* =============================================
   2. 基础重置与全局样式
   ============================================= */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    color: var(--color-text-body);
    background-color: var(--color-bg-page);
    margin: 0;
    padding: 0;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

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

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-heading);
    line-height: 1.4;
    margin-top: 0;
}

p {
    margin: 0 0 1em 0;
    color: var(--color-text-body);
}

ul, ol {
    padding-left: 20px;
}

/* =============================================
   3. 布局容器
   ============================================= */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.site-content {
    display: flex;
    gap: 30px;
    padding: 30px 0;
}

.content-area {
    flex: 1;
    max-width: var(--content-width);
    min-width: 0;
}

.sidebar-area {
    width: var(--sidebar-width);
    flex-shrink: 0;
}

/* =============================================
   4. 顶部导航栏（途百品牌规范）
   ============================================= */
.site-header {
    background: var(--color-bg-page); /* 浅灰 #F5F7F9 */
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: 70px; /* Header 高度 70px */
}

.header-inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* ===== LOGO区域：图片 + 文字 + 域名 ===== */
.site-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.site-logo .logo-link {
    display: flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
}

.site-logo .logo-img {
    width: 44px;
    height: 44px;
    object-fit: contain;
    display: block;
}

/* 品牌中文"途百"：现代几何黑体，深森林绿，加粗 */
.site-logo .logo-text {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
    font-size: 26px;
    font-weight: 800;
    color: var(--color-primary); /* 深森林绿 #1F5F44 */
    letter-spacing: 1px;
    line-height: 1;
}

/* 域名 tu100.top：小号无衬线 */
.site-logo .logo-domain {
    font-family: "SF Mono", "Consolas", "Menlo", monospace;
    font-size: 12px;
    color: var(--color-text-heading); /* 深灰 #3A4047 */
    margin-left: 2px;
    letter-spacing: 0.5px;
    opacity: 0.85;
    align-self: flex-end;
    padding-bottom: 4px;
}

/* 主菜单 */
.main-navigation {
    display: flex;
    align-items: center;
    height: 100%;
}

.main-navigation .menu-main-container {
    height: 100%;
}

.main-navigation ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    height: 100%;
}

.main-navigation ul li {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.main-navigation ul li a {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 16px;
    color: var(--color-text-heading);
    font-size: var(--font-size-base);
    text-decoration: none;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
}

/* 导航菜单项图标 */
.main-navigation .nav-icon {
    margin-right: 6px;
    font-size: 15px;
    line-height: 1;
    flex-shrink: 0;
}

.main-navigation ul li a:hover,
.main-navigation ul li.current-menu-item > a,
.main-navigation ul li.current_page_item > a {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* 下拉菜单 */
.main-navigation ul li ul {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    min-width: 180px;
    display: none;
    flex-direction: column;
    padding: 6px 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    z-index: 999;
}

.main-navigation ul li:hover > ul {
    display: flex;
}

.main-navigation ul li ul li {
    height: auto;
}

.main-navigation ul li ul li a {
    height: auto;
    padding: 8px 16px;
    border-bottom: none;
    font-size: var(--font-size-sm);
}

.main-navigation ul li ul li a:hover {
    background: var(--color-bg-page);
    border-bottom: none;
}

/* 搜索图标 */
.header-search {
    margin-left: 16px;
    cursor: pointer;
}

.header-search .search-toggle {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--color-text-heading);
    cursor: pointer;
    padding: 6px;
    line-height: 1;
}

.header-search .search-toggle:hover {
    color: var(--color-primary);
}

/* 搜索弹出 */
.search-form-popup {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    z-index: 999;
}

.search-form-popup.active {
    display: block;
}

.search-form-popup form {
    display: flex;
    gap: 0;
}

.search-form-popup input[type="search"] {
    border: 1px solid var(--color-border);
    border-right: none;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    padding: 8px 12px;
    font-size: var(--font-size-sm);
    width: 200px;
    outline: none;
}

.search-form-popup input[type="search"]:focus {
    border-color: var(--color-primary);
}

.search-form-popup button {
    background: var(--color-primary);
    color: var(--color-text-white);
    border: none;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 8px 14px;
    cursor: pointer;
    font-size: var(--font-size-sm);
}

.search-form-popup button:hover {
    background: var(--color-primary-hover);
}

/* 汉堡菜单按钮（移动端） */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--color-text-heading);
    cursor: pointer;
    padding: 8px;
    line-height: 1;
}

.mobile-menu-toggle:hover {
    color: var(--color-primary);
}

/* =============================================
   5. 广告容器通用样式
   ============================================= */
.ad-container {
    background: var(--color-bg-ad);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-card);
    padding: 20px;
    text-align: center;
    margin: 20px 0;
    position: relative;
    overflow: hidden;
}

.ad-container .ad-label {
    position: absolute;
    top: 4px;
    right: 8px;
    font-size: var(--font-size-xs);
    color: var(--color-text-body);
    opacity: 0.6;
    background: var(--color-bg-ad);
    padding: 0 4px;
}

.ad-container .ad-placeholder {
    color: var(--color-text-body);
    font-size: var(--font-size-sm);
    opacity: 0.7;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 导航下通栏广告 */
.ad-banner-top {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 10px 20px;
}

/* 文章内广告 */
.ad-in-article {
    margin: 24px 0;
}

/* 侧边栏广告 */
.ad-sidebar {
    margin: 20px 0;
}

/* 移动端底部广告 */
.ad-mobile-bottom {
    display: none;
}

/* =============================================
   6. 卡片组件
   ============================================= */
.card {
    background: var(--color-bg-white);
    border-radius: var(--radius-card);
    padding: 20px;
    margin-bottom: 20px;
}

.card-title {
    font-size: var(--font-size-lg);
    color: var(--color-text-heading);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-primary-light);
    position: relative;
}

.card-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--color-primary);
}

/* =============================================
   7. 按钮样式
   ============================================= */
.btn {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-text-white);
    padding: 10px 24px;
    border: none;
    border-radius: var(--radius-btn);
    font-size: var(--font-size-base);
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s ease;
    line-height: 1.4;
}

.btn:hover {
    background: var(--color-primary-hover);
    color: var(--color-text-white);
    text-decoration: none;
}

.btn-sm {
    padding: 6px 16px;
    font-size: var(--font-size-sm);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-text-white);
}

/* =============================================
   8. 首页 - Hero区
   ============================================= */
.hero-section {
    text-align: center;
    padding: 50px 20px 40px;
}

.hero-section h1 {
    font-size: var(--font-size-hero);
    color: var(--color-text-heading);
    margin-bottom: 10px;
    font-weight: 800;
}

.hero-section h1 .hero-highlight {
    color: var(--color-primary);
}

.hero-section p {
    font-size: var(--font-size-lg);
    color: var(--color-text-body);
    max-width: 600px;
    margin: 0 auto;
}

/* =============================================
   9. 首页 - 分类导航卡片
   ============================================= */
.category-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 30px;
}

.category-nav-item {
    background: var(--color-bg-white);
    border-radius: var(--radius-card);
    padding: 24px 16px;
    text-align: center;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.category-nav-item:hover {
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    text-decoration: none;
}

.category-nav-item .cat-icon {
    font-size: 32px;
    margin-bottom: 8px;
    display: block;
}

.category-nav-item .cat-name {
    font-size: var(--font-size-md);
    color: var(--color-text-heading);
    font-weight: 600;
    display: block;
    margin-bottom: 4px;
}

.category-nav-item .cat-desc {
    font-size: var(--font-size-xs);
    color: var(--color-text-body);
    display: block;
}

/* =============================================
   10. 首页 - 文章列表
   ============================================= */
.post-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.post-list-item {
    display: flex;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
}

.post-list-item:last-child {
    border-bottom: none;
}

.post-list-thumb {
    width: 160px;
    height: 100px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-bg-page);
}

.post-list-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-list-thumb .no-thumb {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-body);
    font-size: var(--font-size-xs);
    opacity: 0.5;
}

.post-list-body {
    flex: 1;
    min-width: 0;
}

.post-list-body .post-title {
    font-size: var(--font-size-lg);
    margin-bottom: 8px;
    line-height: 1.4;
}

.post-list-body .post-title a {
    color: var(--color-text-heading);
    text-decoration: none;
}

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

.post-list-body .post-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-body);
    line-height: 1.6;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-list-body .post-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-body);
    opacity: 0.7;
}

.post-list-body .post-meta span {
    margin-right: 14px;
}

.post-list-body .post-meta a {
    color: var(--color-primary);
}

/* =============================================
   11. 热门干货区域
   ============================================= */
.hot-posts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.hot-post-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--color-bg-page);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background 0.2s ease;
}

.hot-post-item:hover {
    background: var(--color-bg-label);
    text-decoration: none;
}

.hot-post-rank {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.hot-post-rank.top-1 {
    background: var(--color-primary);
    color: var(--color-text-white);
}

.hot-post-rank.top-2 {
    background: var(--color-primary);
    color: var(--color-text-white);
}

.hot-post-rank.top-3 {
    background: var(--color-primary);
    color: var(--color-text-white);
}

.hot-post-title {
    font-size: var(--font-size-sm);
    color: var(--color-text-heading);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* =============================================
   12. 分页导航
   ============================================= */
.pagination {
    padding: 24px 0;
    text-align: center;
}

.pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    margin: 0 3px;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-body);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: all 0.2s ease;
}

.pagination .page-numbers:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination .page-numbers.current {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-white);
}

.pagination .page-numbers.prev,
.pagination .page-numbers.next {
    font-size: var(--font-size-sm);
}

/* =============================================
   13. 面包屑导航
   ============================================= */
.breadcrumb {
    font-size: var(--font-size-sm);
    color: var(--color-text-body);
    padding: 12px 0;
    margin-bottom: 8px;
}

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

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb .separator {
    margin: 0 8px;
    color: var(--color-border);
}

.breadcrumb .current {
    color: var(--color-text-body);
}

/* =============================================
   14. 文章内容页
   ============================================= */
.single-header {
    margin-bottom: 24px;
}

.single-header .entry-title {
    font-size: var(--font-size-xxl);
    color: var(--color-text-heading);
    margin-bottom: 12px;
    line-height: 1.35;
}

.single-header .entry-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-body);
    opacity: 0.8;
}

.single-header .entry-meta span {
    margin-right: 16px;
}

.single-header .entry-meta a {
    color: var(--color-primary);
}

/* 正文内容 */
.entry-content {
    font-size: var(--font-size-md);
    line-height: 1.85;
    color: var(--color-text-body);
}

.entry-content h2,
.entry-content h3,
.entry-content h4 {
    color: var(--color-text-heading);
    margin-top: 1.5em;
    margin-bottom: 0.6em;
}

.entry-content h2 {
    font-size: 22px;
    border-left: 4px solid var(--color-primary);
    padding-left: 12px;
}

.entry-content h3 {
    font-size: 19px;
}

.entry-content p {
    margin-bottom: 1.2em;
}

.entry-content img {
    border-radius: var(--radius-sm);
    margin: 16px 0;
}

.entry-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

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

.entry-content ul,
.entry-content ol {
    margin-bottom: 1.2em;
}

.entry-content li {
    margin-bottom: 6px;
}

.entry-content blockquote {
    border-left: 4px solid var(--color-primary-light);
    margin: 20px 0;
    padding: 12px 20px;
    background: var(--color-bg-page);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--color-text-body);
    font-style: italic;
}

.entry-content code {
    background: var(--color-bg-label);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.9em;
    color: var(--color-text-heading);
}

.entry-content pre {
    background: #2d2d2d;
    color: #f8f8f2;
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin: 16px 0;
}

/* 标签区 */
.post-tags {
    margin: 20px 0;
    padding: 16px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.post-tags .tag-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-heading);
    font-weight: 600;
    margin-right: 8px;
}

.post-tags a {
    display: inline-block;
    background: var(--color-bg-label);
    color: var(--color-primary);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: var(--font-size-xs);
    margin: 3px 4px;
    text-decoration: none;
    transition: background 0.2s ease;
}

.post-tags a:hover {
    background: var(--color-primary-light);
}

/* 上下篇导航 */
.post-navigation {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin: 24px 0;
    padding: 20px 0;
    border-top: 1px solid var(--color-border);
}

.post-navigation a {
    flex: 1;
    padding: 14px 18px;
    background: var(--color-bg-page);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-heading);
    text-decoration: none;
    transition: background 0.2s ease;
}

.post-navigation a:hover {
    background: var(--color-bg-label);
    color: var(--color-primary);
}

.post-navigation .nav-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-body);
    margin-bottom: 4px;
}

.post-navigation .nav-title {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* =============================================
   15. 相关文章
   ============================================= */
.related-posts {
    margin: 24px 0;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.related-post-item {
    text-decoration: none;
    display: block;
}

.related-post-item:hover {
    text-decoration: none;
}

.related-post-thumb {
    width: 100%;
    aspect-ratio: 16/10;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-bg-page);
    margin-bottom: 8px;
}

.related-post-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-post-title {
    font-size: var(--font-size-sm);
    color: var(--color-text-heading);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* =============================================
   16. 归档页
   ============================================= */
.archive-header {
    padding: 20px 0 10px;
}

.archive-header h1 {
    font-size: var(--font-size-xxl);
    color: var(--color-text-heading);
    margin-bottom: 6px;
}

.archive-header .archive-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-body);
}

/* 子分类导航 */
.sub-category-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
}

.sub-category-nav a {
    padding: 6px 14px;
    background: var(--color-bg-label);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    color: var(--color-text-body);
    text-decoration: none;
    transition: all 0.2s ease;
}

.sub-category-nav a:hover,
.sub-category-nav a.active {
    background: var(--color-primary);
    color: var(--color-text-white);
}

/* =============================================
   17. 侧边栏
   ============================================= */
.widget {
    margin-bottom: 24px;
}

.widget-title {
    font-size: var(--font-size-md);
    color: var(--color-text-heading);
    font-weight: 600;
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-primary);
}

.widget ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.widget ul li {
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
}

.widget ul li:last-child {
    border-bottom: none;
}

.widget ul li a {
    color: var(--color-text-body);
    font-size: var(--font-size-sm);
    text-decoration: none;
    display: block;
    transition: color 0.2s ease;
}

.widget ul li a:hover {
    color: var(--color-primary);
    padding-left: 4px;
}

/* 热门文章小工具 */
.widget_hot_posts .hot-post-sidebar {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
}

.widget_hot_posts .hot-post-sidebar:last-child {
    border-bottom: none;
}

.widget_hot_posts .hot-sidebar-rank {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.widget_hot_posts .hot-sidebar-rank.top-1,
.widget_hot_posts .hot-sidebar-rank.top-2,
.widget_hot_posts .hot-sidebar-rank.top-3 {
    background: var(--color-primary);
    color: var(--color-text-white);
}

.widget_hot_posts .hot-sidebar-title {
    font-size: var(--font-size-sm);
    color: var(--color-text-heading);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* 分类树形菜单 */
.widget_categories ul li {
    position: relative;
}

.widget_categories ul ul {
    padding-left: 16px;
}

/* ===== 美化版分类导航面板 ===== */
.cat-nav-panel {
    padding: 0 !important;
    overflow: hidden;
}

.cat-nav-panel .widget-title {
    padding: 16px 20px 14px;
    margin: 0;
}

.cat-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cat-nav-list .cat-nav-item {
    border-bottom: 1px solid var(--color-border);
    padding: 0;
    margin: 0;
}

.cat-nav-list .cat-nav-item:last-child {
    border-bottom: none;
}

/* 顶级分类链接 */
.cat-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
}

.cat-nav-link:hover {
    background: var(--color-bg-page);
    color: var(--color-primary);
    padding-left: 24px;
}

.cat-nav-icon {
    font-size: 18px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-label);
    border-radius: 8px;
    flex-shrink: 0;
    transition: background 0.2s ease;
}

.cat-nav-link:hover .cat-nav-icon {
    background: var(--color-primary-light);
}

.cat-nav-name {
    flex: 1;
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-heading);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cat-nav-link:hover .cat-nav-name {
    color: var(--color-primary);
}

.cat-nav-count {
    font-size: 11px;
    color: var(--color-text-body);
    background: var(--color-bg-label);
    border-radius: 10px;
    padding: 1px 8px;
    min-width: 24px;
    text-align: center;
    font-weight: 500;
}

/* 子分类列表 */
.cat-nav-children {
    list-style: none;
    margin: 0;
    padding: 0 0 10px 0;
    background: var(--color-bg-page);
    border-top: 1px dashed var(--color-border);
}

.cat-nav-children li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 20px 7px 34px;
    font-size: 13px;
    color: var(--color-text-body);
    text-decoration: none;
    transition: all 0.2s ease;
}

.cat-nav-children li a:hover {
    color: var(--color-primary);
    padding-left: 40px;
}

.cat-nav-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--color-primary-light);
    flex-shrink: 0;
    transition: background 0.2s ease;
}

.cat-nav-children li a:hover .cat-nav-dot {
    background: var(--color-primary);
}

.cat-nav-child-count {
    margin-left: auto;
    font-size: 11px;
    color: var(--color-text-body);
    opacity: 0.7;
}

/* 移动端适配 */
@media (max-width: 767px) {
    .cat-nav-link {
        padding: 11px 16px;
    }
    .cat-nav-link:hover {
        padding-left: 20px;
    }
    .cat-nav-children li a {
        padding-left: 28px;
    }
    .cat-nav-children li a:hover {
        padding-left: 34px;
    }
}

/* 标签云 */
.widget_tag_cloud .tag-cloud-link {
    display: inline-block;
    background: var(--color-bg-label);
    color: var(--color-primary);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: var(--font-size-xs) !important;
    margin: 3px 4px;
    text-decoration: none;
    transition: background 0.2s ease;
}

.widget_tag_cloud .tag-cloud-link:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding-left: 12px;
}

/* =============================================
   18. 页脚
   ============================================= */
.site-footer {
    background: var(--color-bg-white);
    border-top: 1px solid var(--color-border);
    margin-top: 40px;
}

.footer-widgets {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 40px 20px 20px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-widgets .widget-title {
    color: var(--color-text-heading);
    font-size: var(--font-size-md);
    border-bottom-color: var(--color-border);
}

.footer-widgets .widget ul li a {
    color: var(--color-text-body);
    font-size: var(--font-size-sm);
}

.footer-divider {
    max-width: var(--container-width);
    margin: 0 auto;
    border: none;
    border-top: 1px solid var(--color-border);
}

.footer-bottom {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-xs);
    color: var(--color-text-body);
    opacity: 0.8;
}

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

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

/* wp_nav_menu输出的ul也可能套这个class，去掉嵌套ul的额外边距 */
.footer-bottom-links ul {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.footer-bottom-links li {
    margin: 0;
    padding: 0;
}

.footer-bottom-links a {
    color: var(--color-text-body);
    text-decoration: none;
    font-size: var(--font-size-xs);
    padding: 4px 0;
}

.footer-bottom-links a:hover {
    color: var(--color-primary);
}

/* =============================================
   19. 响应式 - 平板 (768-1023px)
   ============================================= */
@media (max-width: 1023px) {
    .site-content {
        flex-direction: column;
    }

    .content-area {
        max-width: 100%;
    }

    .sidebar-area {
        width: 100%;
    }

    .category-nav {
        grid-template-columns: repeat(2, 1fr);
    }

    .related-posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-widgets {
        grid-template-columns: repeat(2, 1fr);
    }

    .hot-posts {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-section h1 {
        font-size: 28px;
    }
}

/* =============================================
   20. 响应式 - 手机 (<768px)
   ============================================= */
@media (max-width: 767px) {
    :root {
        --nav-height: var(--nav-height-mobile);
    }

    .container {
        padding: 0 14px;
    }

    .site-header {
        height: var(--nav-height-mobile);
    }

    .header-inner {
        padding: 0 14px;
    }

    .site-logo {
        gap: 6px;
    }

    .site-logo .logo-img {
        width: 38px;
        height: 38px;
    }

    .site-logo .logo-text {
        font-size: 20px;
    }

    .site-logo .logo-domain {
        font-size: 10px;
        padding-bottom: 2px;
    }

    /* 移动端汉堡菜单 */
    .mobile-menu-toggle {
        display: block;
    }

    .main-navigation {
        display: none;
        position: absolute;
        top: var(--nav-height-mobile);
        left: 0;
        right: 0;
        background: var(--color-bg-white);
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        z-index: 999;
        height: auto;
    }

    .main-navigation.active {
        display: block;
    }

    .main-navigation ul {
        flex-direction: column;
        height: auto;
        padding: 8px 0;
    }

    .main-navigation ul li {
        height: auto;
    }

    .main-navigation ul li a {
        height: auto;
        padding: 10px 20px;
        border-bottom: none;
    }

    .main-navigation ul li ul {
        position: static;
        box-shadow: none;
        border: none;
        border-radius: 0;
        padding-left: 16px;
        display: none;
    }

    .main-navigation ul li:hover > ul {
        display: none;
    }

    .main-navigation ul li ul.open {
        display: block;
    }

    .header-search {
        margin-left: 8px;
    }

    .search-form-popup {
        right: 14px;
        left: 14px;
    }

    .search-form-popup input[type="search"] {
        width: 100%;
    }

    .hero-section {
        padding: 30px 14px 24px;
    }

    .hero-section h1 {
        font-size: 22px;
    }

    .hero-section p {
        font-size: var(--font-size-base);
    }

    .category-nav {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .category-nav-item {
        padding: 16px 12px;
    }

    .category-nav-item .cat-icon {
        font-size: 24px;
    }

    .post-list-item {
        flex-direction: column;
        gap: 10px;
        padding: 16px 0;
    }

    .post-list-thumb {
        width: 100%;
        height: 180px;
    }

    .post-list-body .post-title {
        font-size: var(--font-size-md);
    }

    .hot-posts {
        grid-template-columns: 1fr;
    }

    .single-header .entry-title {
        font-size: var(--font-size-xl);
    }

    .related-posts-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .post-navigation {
        flex-direction: column;
        gap: 10px;
    }

    .pagination .page-numbers {
        min-width: 32px;
        height: 32px;
        font-size: var(--font-size-xs);
    }

    .footer-widgets {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 24px 14px 12px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
        padding: 12px 14px;
    }

    .footer-bottom-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .archive-header h1 {
        font-size: var(--font-size-xl);
    }

    /* 移动端底部广告显示 */
    .ad-mobile-bottom {
        display: block;
        margin: 0;
        padding: 10px 14px;
        background: var(--color-bg-ad);
        border-top: 1px solid var(--color-border-light);
    }

    /* 防止移动端横向滚动 */
    html, body {
        overflow-x: hidden;
        width: 100%;
    }

    .entry-content img,
    .entry-content pre,
    .entry-content table {
        max-width: 100% !important;
    }

    .entry-content pre {
        white-space: pre-wrap;
        word-wrap: break-word;
    }
}

/* =============================================
   21. 打印样式
   ============================================= */
@media print {
    .site-header,
    .site-footer,
    .sidebar-area,
    .post-navigation,
    .related-posts,
    .ad-container,
    .post-tags,
    .breadcrumb {
        display: none;
    }

    .site-content {
        display: block;
    }

    .content-area {
        max-width: 100%;
    }

    body {
        background: #fff;
        color: #000;
    }
}

/* =============================================
   22. 移动端文章列表卡片化 + 触控优化
   ============================================= */
@media (max-width: 767px) {
    /* 文章卡片圆角与间距 */
    .post-list-item {
        background: var(--color-bg-white);
        border-radius: 12px;
        border: 1px solid var(--color-border);
        padding: 12px;
        margin-bottom: 12px;
        box-shadow: none;
    }

    .post-list-thumb {
        height: 170px;
        border-radius: 8px;
    }

    .post-list-thumb img {
        border-radius: 8px;
        object-fit: cover;
        width: 100%;
        height: 100%;
    }

    .post-list-body .post-title {
        font-size: 16px;
        line-height: 1.4;
    }

    .post-list-body .post-excerpt {
        -webkit-line-clamp: 2;
    }

    /* 触控目标最小44px */
    .category-nav-item,
    .post-list-body .post-title a,
    .btn {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    /* 分类卡片间距 */
    .category-nav-item {
        padding: 18px 10px;
    }

    /* 热门干货卡片化 */
    .hot-post-item {
        background: var(--color-bg-white);
        border: 1px solid var(--color-border);
        border-radius: 10px;
        padding: 12px;
    }

    /* 侧边栏卡片间距优化 */
    .card {
        padding: 16px;
        border-radius: 12px;
        margin-bottom: 14px;
    }

    /* 文章页标题与正文间距 */
    .single-header .entry-title {
        font-size: 20px;
        line-height: 1.4;
    }

    .entry-content {
        font-size: 15px;
        line-height: 1.8;
    }

    /* 相关文章卡片化 */
    .related-post-item {
        background: var(--color-bg-white);
        border: 1px solid var(--color-border);
        border-radius: 10px;
        padding: 10px;
    }

    .related-post-thumb {
        margin-bottom: 8px;
    }

    /* 分页触控 */
    .pagination .page-numbers {
        min-width: 40px;
        height: 40px;
        margin: 3px;
    }

    /* 面包屑间距 */
    .breadcrumb {
        font-size: 12px;
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    /* 首页hero区 */
    .hero-section {
        padding: 24px 14px 18px;
    }

    .hero-section h1 {
        font-size: 20px;
    }

    /* 广告容器移动端全宽 */
    .ad-container {
        border-radius: 10px;
        padding: 14px;
    }
}