/*
Theme Name: AI Tools Navigator
Theme URI: https://your-website.com
Description: 专业AI工具导航主题，对标ai-bot.cn风格，支持后台发布文章自动展示
Version: 2.0.0
Author: Your Name
Author URI: https://your-website.com
Text Domain: ai-navigator
License: GPL v2 or later
Tags: ai-tools, navigation, directory, clean, modern, responsive
*/

/* ============================================
   CSS 变量
============================================ */
:root {
    --primary:       #1a6dff;
    --primary-dark:  #0050d0;
    --primary-light: #e8f0ff;
    --green:         #10b981;
    --orange:        #f59e0b;
    --red:           #ef4444;
    --text-1:        #1a1a2e;
    --text-2:        #4b5563;
    --text-3:        #9ca3af;
    --bg-page:       #f3f4f6;
    --bg-white:      #ffffff;
    --bg-hover:      #f0f4ff;
    --border:        #e5e7eb;
    --shadow-sm:     0 1px 3px rgba(0,0,0,.08);
    --shadow-md:     0 4px 12px rgba(0,0,0,.10);
    --shadow-lg:     0 8px 24px rgba(0,0,0,.12);
    --radius:        8px;
    --radius-lg:     12px;
    --sidebar-w:     220px;
    --topbar-h:      60px;
    --transition:    .2s ease;
}

/* ============================================
   Reset & Base
============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-page);
    color: var(--text-1);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }

/* ============================================
   顶部导航栏
============================================ */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--topbar-h);
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}
.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 24px;
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
    text-decoration: none;
    max-width: 160px;
}
.site-logo img { height: 30px; width: auto; }
.site-logo-text {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 顶部导航菜单 */
.header-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: 1;
    overflow: hidden;
}
.header-nav ul {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.header-nav ul::-webkit-scrollbar { display: none; }
.header-nav li { list-style: none; }
.header-nav a {
    display: block;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: .85rem;
    color: var(--text-2);
    white-space: nowrap;
    transition: var(--transition);
}
.header-nav a:hover,
.header-nav a.current { color: var(--primary); background: var(--primary-light); }

/* 顶部搜索（小） */
.header-search {
    display: flex;
    align-items: center;
    background: var(--bg-page);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 4px 10px;
    gap: 4px;
    width: 180px;
    flex-shrink: 0;
    transition: var(--transition);
}
.header-search:focus-within {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(26,109,255,.12);
}
.header-search input {
    border: none;
    background: transparent;
    font-size: .88rem;
    color: var(--text-1);
    outline: none;
    width: 100%;
}
.header-search-btn {
    background: none;
    border: none;
    color: var(--text-3);
    font-size: 1rem;
    padding: 0;
    display: flex;
    align-items: center;
}

/* ============================================
   搜索 Banner（首页顶部大搜索区）
============================================ */
.search-banner {
    background: linear-gradient(135deg, #1a6dff 0%, #7c3aed 100%);
    padding: 48px 20px 40px;
    text-align: center;
    margin-top: var(--topbar-h);
}
.search-banner-title {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}
.search-banner-subtitle {
    font-size: 1rem;
    color: rgba(255,255,255,.85);
    margin-bottom: 28px;
}
.search-banner-form {
    max-width: 640px;
    margin: 0 auto;
    display: flex;
    background: #fff;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0,0,0,.2);
}
.search-banner-form input {
    flex: 1;
    padding: 14px 24px;
    border: none;
    outline: none;
    font-size: 1rem;
    color: var(--text-1);
    background: transparent;
}
.search-banner-form button {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
}
.search-banner-form button:hover { background: var(--primary-dark); }

/* ============================================
   主体布局：左侧分类 + 右侧内容
============================================ */
.site-body {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px 20px;
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

/* ============================================
   左侧分类导航
============================================ */
.cat-sidebar {
    grid-column: 1 !important;
    width: var(--sidebar-w) !important;
    min-width: 0 !important;
    display: block !important;
    position: sticky;
    top: calc(var(--topbar-h) + 16px);
    max-height: calc(100vh - var(--topbar-h) - 32px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}
.cat-sidebar::-webkit-scrollbar { width: 4px; }
.cat-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.cat-sidebar-inner {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: visible;
    position: relative;
    z-index: 1;
}
.cat-sidebar-title {
    padding: 14px 16px;
    font-size: .85rem;
    font-weight: 600;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: .05em;
    border-bottom: 1px solid var(--border);
    background: var(--bg-page);
}
.cat-nav-list { padding: 6px 0; }
.cat-nav-item { display: block; }
.cat-nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 16px;
    font-size: .9rem;
    color: var(--text-2);
    transition: var(--transition);
    border-left: 3px solid transparent;
    text-decoration: none;
    cursor: pointer;
    position: relative;
    z-index: 1;
}
.cat-nav-link:hover {
    color: var(--primary);
    background: var(--bg-hover);
    border-left-color: var(--primary);
}
.cat-nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
    border-left-color: var(--primary);
    font-weight: 600;
}
.cat-nav-icon { font-size: 1.1rem; width: 22px; text-align: center; flex-shrink: 0; }
.cat-nav-count {
    margin-left: auto;
    font-size: .75rem;
    color: var(--text-3);
    background: var(--bg-page);
    border-radius: 10px;
    padding: 1px 7px;
}
.cat-nav-link.active .cat-nav-count { background: #d0e3ff; color: var(--primary); }

/* ============================================
   右侧主内容
============================================ */
.main-content { flex: 1; min-width: 0; }

/* 三栏布局容器 */
.site-body-three-column {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px 20px;
    box-sizing: border-box;
    display: grid !important;
    grid-template-columns: 220px minmax(0, 1fr) 300px !important;
    grid-template-rows: auto;
    gap: 24px !important;
    align-items: start !important;
}

.main-content-three { 
    min-width: 0 !important;
    width: 100% !important;
    grid-column: 2 !important;
    display: block !important;
    overflow: visible !important;
}

.sidebar-right {
    grid-column: 3 !important;
    width: 300px !important;
    min-width: 0 !important;
    display: block !important;
    position: sticky;
    top: calc(var(--topbar-h) + 16px);
    max-height: calc(100vh - var(--topbar-h) - 32px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.sidebar-right::-webkit-scrollbar { width: 4px; }
.sidebar-right::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.sidebar-inner {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
}

.sidebar-section {
    padding: 0;
    border-bottom: 1px solid var(--border);
}

.sidebar-section:last-child {
    border-bottom: none;
}

.sidebar-section-title {
    padding: 14px 16px;
    font-size: .9rem;
    font-weight: 600;
    color: var(--text-1);
    background: var(--bg-page);
    border-bottom: 1px solid var(--border);
}

.sidebar-posts {
    padding: 0;
}

.sidebar-post-item {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.sidebar-post-item:hover {
    background: var(--bg-hover);
}

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

.sidebar-post-title {
    display: block;
    color: var(--text-1);
    font-weight: 600;
    font-size: .95rem;
    line-height: 1.4;
    margin-bottom: 6px;
    text-decoration: none;
    transition: var(--transition);
}

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

.sidebar-post-date {
    font-size: .8rem;
    color: var(--text-3);
}

/* 分类区块 */
.category-block {
    margin-bottom: 32px;
    scroll-margin-top: calc(var(--topbar-h) + 16px);
}
.category-block-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.category-block-icon {
    font-size: 1.3rem;
    width: 36px;
    height: 36px;
    background: var(--primary-light);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}
.category-block-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-1);
}
.category-block-more {
    margin-left: auto;
    font-size: .85rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 4px;
}
.category-block-more:hover { text-decoration: underline; }

/* ============================================
   工具卡片网格
============================================ */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 14px;
}

.tool-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}
.tool-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.tool-card-top { display: flex; align-items: center; gap: 10px; }
.tool-card-logo {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--bg-page);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    border: 1px solid var(--border);
}
.tool-card-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}
.tool-card-name {
    font-size: .95rem;
    font-weight: 600;
    color: var(--text-1);
    line-height: 1.3;
}
.tool-card-desc {
    font-size: .82rem;
    color: var(--text-2);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    flex: 1;
}
.tool-card-footer {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}
.tag {
    font-size: .72rem;
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 500;
}
.tag-free    { background: #d1fae5; color: #065f46; }
.tag-paid    { background: #fee2e2; color: #991b1b; }
.tag-freemium{ background: #fef3c7; color: #92400e; }
.tag-trial   { background: #e0e7ff; color: #3730a3; }
.tag-hot     { background: #fef3c7; color: #b45309; }
.tag-hot::before { content: "🔥 "; }
.tag-new     { background: #d1fae5; color: #065f46; }
.tag-new::before { content: "✨ "; }
.tag-featured{ background: #e0e7ff; color: #4338ca; }

.tool-card-link {
    position: absolute;
    inset: 0;
    z-index: 10;
    border-radius: var(--radius-lg);
}

/* ============================================
   搜索结果浮层
============================================ */
#ajax-search-results {
    position: absolute;
    top: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    width: 640px;
    max-width: 90vw;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    display: none;
    max-height: 480px;
    overflow-y: auto;
}
.ajax-result-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
    text-decoration: none;
    color: var(--text-1);
}
.ajax-result-item:last-child { border-bottom: none; }
.ajax-result-item:hover { background: var(--bg-hover); }
.ajax-result-logo {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--bg-page);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    border: 1px solid var(--border);
    overflow: hidden;
}
.ajax-result-logo img { width: 100%; height: 100%; object-fit: cover; }
.ajax-result-name { font-weight: 600; font-size: .9rem; }
.ajax-result-desc { font-size: .8rem; color: var(--text-3); margin-top: 2px; }
.ajax-no-result { padding: 24px; text-align: center; color: var(--text-3); font-size: .9rem; }
.ajax-loading   { padding: 24px; text-align: center; color: var(--text-3); }

/* ============================================
   分页
============================================ */
.pagination { margin-top: 32px; display: flex; justify-content: center; gap: 6px; }
.pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border-radius: 8px;
    font-size: .9rem;
    color: var(--text-2);
    background: var(--bg-white);
    border: 1px solid var(--border);
    transition: var(--transition);
}
.pagination .page-numbers:hover { border-color: var(--primary); color: var(--primary); }
.pagination .page-numbers.current { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .page-numbers.dots { border: none; background: none; }

/* 上下篇导航 */
.pagination.tool-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 40px;
    justify-content: stretch;
}
.pagination.tool-nav > div {
    display: flex;
    align-items: center;
    min-height: 60px;
}
.pagination.tool-nav .prev { justify-content: flex-start; }
.pagination.tool-nav .next { justify-content: flex-end; }
.nav-link {
    display: block;
    padding: 12px 20px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--primary);
    font-weight: 600;
    font-size: .95rem;
    transition: var(--transition);
    text-decoration: none;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.nav-link:hover:not(.disabled) {
    background: var(--bg-hover);
    border-color: var(--primary);
    transform: translateX(var(--nav-offset, 4px));
}
.pagination.tool-nav .prev .nav-link:hover { --nav-offset: -4px; }
.nav-link.disabled {
    color: var(--text-3);
    cursor: not-allowed;
    background: #f9fafb;
}

/* ============================================
   空状态
============================================ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}
.empty-state-icon { font-size: 3.5rem; margin-bottom: 16px; }
.empty-state h2 { font-size: 1.3rem; margin-bottom: 8px; }
.empty-state p { color: var(--text-3); margin-bottom: 20px; }
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--primary);
    color: #fff;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    font-size: .9rem;
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; }

/* ============================================
   分类 Banner
============================================ */
.category-banner {
    margin-bottom: 24px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.category-banner-inner {
    position: relative;
    background: linear-gradient(135deg, #1a6dff 0%, #4f8aff 50%, #7aa7ff 100%);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 32px;
    overflow: hidden;
}
.category-banner-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(255,255,255,.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,.1) 0%, transparent 40%),
        radial-gradient(circle at 40% 80%, rgba(255,255,255,.08) 0%, transparent 30%);
    pointer-events: none;
}
.category-banner-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
    max-width: 800px;
}
.category-banner-icon {
    font-size: 3.5rem;
    margin-bottom: 16px;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,.15));
}
.category-banner-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-shadow: 0 2px 4px rgba(0,0,0,.1);
}
.category-banner-desc {
    font-size: 1rem;
    opacity: .95;
    margin-bottom: 16px;
}
.category-banner-meta {
    display: inline-flex;
    gap: 16px;
    font-size: .9rem;
    opacity: .9;
}
.category-banner-count {
    background: rgba(255,255,255,.2);
    padding: 4px 12px;
    border-radius: 20px;
    backdrop-filter: blur(4px);
}

/* ============================================
   分类文章列表（普通文章分类）
============================================ */
.category-posts {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 24px;
}
.post-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 20px;
    overflow: hidden;
    transition: var(--transition);
}
.post-card:last-child { margin-bottom: 0; }
.post-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}
.post-card-link {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 1;
}
.post-card-inner {
    display: flex;
    gap: 20px;
    padding: 20px;
}
.post-card-thumb {
    flex-shrink: 0;
    width: 200px;
    height: 140px;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-page);
}
.post-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}
.post-card:hover .post-card-thumb img {
    transform: scale(1.05);
}
.post-card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.post-card-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.post-card-title a {
    color: var(--text-1);
    text-decoration: none;
}
.post-card-title a:hover {
    color: var(--primary);
}
.post-card-meta {
    display: flex;
    gap: 16px;
    font-size: .85rem;
    color: var(--text-3);
    margin-bottom: 10px;
}
.post-card-excerpt {
    font-size: .95rem;
    color: var(--text-2);
    line-height: 1.6;
}

/* ============================================
   分类工具列表
============================================ */
.category-tools {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 24px;
}

/* ============================================
   文章详情页
============================================ */
.article-detail {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 24px;
}
.article-header {
    padding: 32px 32px 24px;
    border-bottom: 1px solid var(--border);
}
.article-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 16px;
    line-height: 1.3;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: .9rem;
    color: var(--text-3);
    margin-bottom: 20px;
}
.article-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}
.article-thumbnail {
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin: 24px 0;
}
.article-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
}
.article-content {
    padding: 32px;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-1);
}
.article-content p {
    margin-bottom: 20px;
}
.article-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 32px 0 16px;
    color: var(--text-1);
}
.article-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 24px 0 12px;
    color: var(--text-1);
}
.article-content ul,
.article-content ol {
    margin-bottom: 20px;
    padding-left: 24px;
}
.article-content li {
    margin-bottom: 8px;
}
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 16px 0;
}
.article-content blockquote {
    background: var(--bg-page);
    padding: 16px 20px;
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 20px 0;
    font-style: italic;
    color: var(--text-2);
}
.article-content code {
    background: var(--bg-page);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: .9em;
}
.article-content pre {
    background: #2d2d2d;
    color: #f8f8f2;
    padding: 16px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 16px 0;
}
.article-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}
.article-tags,
.article-categories {
    padding: 20px 32px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: .9rem;
    flex-wrap: wrap;
}
.article-tags a,
.article-categories a {
    display: inline-block;
    background: var(--bg-page);
    padding: 6px 12px;
    border-radius: 20px;
    color: var(--text-2);
    text-decoration: none;
    transition: var(--transition);
}
.article-tags a:hover,
.article-categories a:hover {
    background: var(--primary);
    color: #fff;
}
.article-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 24px 32px;
    border-top: 1px solid var(--border);
    margin-top: 0;
}
.article-navigation a {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 16px;
    background: var(--bg-page);
    border-radius: var(--radius);
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid transparent;
}
.article-navigation a:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
}
.nav-label {
    font-size: .85rem;
    color: var(--text-3);
}
.nav-title {
    font-weight: 600;
    color: var(--text-1);
}
.article-comments-section {
    padding: 32px;
    border-top: 1px solid var(--border);
}

/* ============================================
   单篇工具详情
============================================ */
.tool-detail-wrap {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
}
.tool-detail-hero {
    background: linear-gradient(135deg, #f0f4ff, #e8f0ff);
    padding: 32px 32px 24px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}
.tool-detail-logo {
    width: 80px; height: 80px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    flex-shrink: 0;
    overflow: hidden;
}
.tool-detail-logo img { width: 100%; height: 100%; object-fit: cover; }
.tool-detail-info h1 { font-size: 1.6rem; font-weight: 700; margin-bottom: 8px; }
.tool-detail-meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.tool-detail-visit {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    margin-top: 4px;
    transition: var(--transition);
}
.tool-detail-visit:hover { background: var(--primary-dark); color: #fff; }
.tool-detail-body { padding: 28px 32px; }
.tool-detail-body h2 { font-size: 1.1rem; font-weight: 700; margin: 24px 0 12px; }
.tool-detail-body p { color: var(--text-2); line-height: 1.8; margin-bottom: 12px; }

/* ============================================
   分类归档页头
============================================ */
.archive-hero {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}
.archive-hero-icon {
    font-size: 2rem;
    width: 56px; height: 56px;
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    display: flex; align-items: center; justify-content: center;
}
.archive-hero h1 { font-size: 1.4rem; font-weight: 700; }
.archive-hero p  { color: var(--text-3); font-size: .9rem; margin-top: 4px; }
.archive-hero-count {
    margin-left: auto;
    font-size: .85rem;
    color: var(--text-3);
    white-space: nowrap;
}

/* ============================================
   搜索页头
============================================ */
.search-hero {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.search-hero-kw {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
}
.search-hero-count { color: var(--text-3); font-size: .9rem; }

/* ============================================
   404
============================================ */
.page-404 {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    text-align: center;
}
.page-404-code {
    font-size: 7rem;
    font-weight: 900;
    color: var(--primary-light);
    line-height: 1;
    margin-bottom: 8px;
}
.page-404 h1 { font-size: 1.5rem; margin-bottom: 12px; }
.page-404 p  { color: var(--text-3); margin-bottom: 24px; }

/* ============================================
   页脚
============================================ */
.site-footer {
    background: #16213e;
    color: rgba(255,255,255,.7);
    padding: 40px 20px 24px;
    margin-top: 40px;
}
.footer-inner {
    max-width: 1400px;
    margin: 0 auto;
}
.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 32px;
    padding-bottom: 28px;
    border-bottom: 1px solid rgba(255,255,255,.1);
    margin-bottom: 20px;
}
.footer-brand-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}
.footer-brand-desc { font-size: .85rem; line-height: 1.7; }
.footer-col h4 {
    font-size: .9rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 14px;
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
    font-size: .85rem;
    color: rgba(255,255,255,.6);
    transition: var(--transition);
}
.footer-col ul li a:hover { color: #fff; }
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: .82rem;
    color: rgba(255,255,255,.4);
    flex-wrap: wrap;
    gap: 8px;
}
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-bottom a:hover { color: #fff; }

/* ============================================
   响应式
============================================ */
@media (max-width: 1100px) {
    .tools-grid { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
    :root { --sidebar-w: 190px; }
}
@media (max-width: 900px) {
    /* 三栏改两栏 */
    .site-body-three-column {
        grid-template-columns: 1fr 280px !important;
        gap: 16px !important;
    }
    .cat-sidebar {
        display: none !important;
    }
    .main-content-three {
        grid-column: 1 !important;
    }
    .sidebar-right {
        grid-column: 2 !important;
        width: 280px !important;
    }
    
    .site-body { flex-direction: column; }
    .cat-nav-list { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px; }
    .cat-nav-item { }
    .cat-nav-link {
        border: 1px solid var(--border);
        border-left: 3px solid transparent;
        border-radius: 20px;
        padding: 6px 12px;
        font-size: .82rem;
    }
    .cat-nav-link.active { border-radius: 20px; border-left: 3px solid var(--primary); }
    .cat-nav-count { display: none; }
    .cat-sidebar-title { display: none; }
    .tools-grid { grid-template-columns: repeat(auto-fill, minmax(155px, 1fr)); gap: 10px; }
    .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
    .search-banner-title { font-size: 1.4rem; }
    .header-nav { display: none; }
    .header-search { width: 160px; }
    .tools-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .footer-top { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .tool-detail-hero { flex-direction: column; }
    
    /* 三栏布局响应式 - 移动端，改为单列纵向 */
    .site-body-three-column {
        grid-template-columns: 1fr !important;
        gap: 16px !important;
    }
    .cat-sidebar {
        grid-column: 1 !important;
        width: 100% !important;
        position: relative !important;
        top: 0 !important;
        max-height: 100% !important;
        overflow-y: visible !important;
    }
    .cat-nav-list {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
        padding: 10px;
    }
    .main-content-three {
        grid-column: 1 !important;
    }
    .sidebar-right {
        grid-column: 1 !important;
        width: 100% !important;
        position: relative !important;
        top: 0 !important;
        max-height: 100%;
    }
}

/* ============================================
   WordPress 通用
============================================ */
.aligncenter { display: block; margin: 1rem auto; }
.alignleft   { float: left; margin: 0 1rem 1rem 0; }
.alignright  { float: right; margin: 0 0 1rem 1rem; }
.wp-caption-text { font-size: .8rem; color: var(--text-3); text-align: center; }