/* ========================================================================
   MimoTheme Style - Third 双栏风格
   ======================================================================== */

/* ---------- 变量 ---------- */
:root {
    --color-primary: #3498db;
    --color-primary-dark: #2980b9;
    --color-text: #333;
    --color-text-light: #666;
    --color-link: var(--color-primary);
    --color-link-hover: var(--color-primary-dark);
    --color-border: #e5e5e5;
    --color-bg: #f5f5f5;
    --color-bg-white: #fff;
    --color-bg-code: #f8f8f8;
    --color-header-bg: #0f1011;
    --color-header-text: #fff;

    --radius: 4px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-mono: "SF Mono", Monaco, Consolas, "Liberation Mono", monospace;

    --container-width: 1100px;
    --sidebar-width: 280px;
    --transition: 0.2s ease;
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { overflow-y: scroll; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 { margin: 0 0 0.8em; font-weight: 600; line-height: 1.4; }
p { margin: 0 0 1em; }

a {
    color: var(--color-link);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--color-link-hover); }

img { max-width: 100%; height: auto; vertical-align: middle; }
ul, ol { padding-left: 1.5em; }
li { margin: 0.3em 0; }

blockquote {
    display: block;
    margin: 1em 0;
    padding: 0 16px;
    border-left: 4px solid #4096ff;
    color: #656d76;
    background-color: rgba(64, 150, 255, 0.20);
    border-radius: 0;
}
blockquote >:first-child { margin-top: 0; }
blockquote >:last-child { margin-bottom: 0; }

code, pre {
    font-family: var(--font-mono);
    font-size: 13px;
    background: var(--color-bg-code);
}
code { padding: 2px 6px; border-radius: 3px; }
pre {
    padding: 16px;
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    line-height: 1.6;
}
pre code { padding: 0; background: none; }

table { width: 100%; border-collapse: collapse; margin: 1.2em 0; }
th, td { padding: 8px 12px; border: 1px solid var(--color-border); text-align: left; }
th { background: #f5f5f5; font-weight: 600; }

hr { border: 0; border-top: 1px solid var(--color-border); margin: 1.5em 0; }

/* ---------- 布局工具 ---------- */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.sr-only, .screen-reader-text {
    position: absolute !important;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0);
    white-space: nowrap; border: 0;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 1000;
    padding: 8px 16px;
    background: var(--color-primary);
    color: #fff;
}
.skip-link:focus { left: 8px; }

/* ---------- 站点头部（深色） ---------- */
.site-header {
    background: var(--color-header-bg);
    color: var(--color-header-text);
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}
.site-brand .site-title {
    margin: 0;
    font-size: 1.3em;
    font-weight: 700;
    letter-spacing: 0.5px;
}
.site-brand .site-title a { color: #fff; }
.site-brand .site-title a:hover { color: #3498db; }
.site-brand .site-desc {
    display: none;
}
.logo img { max-height: 32px; }

.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0;
}
.main-nav li a {
    display: block;
    padding: 10px 20px;
    color: rgba(255,255,255,0.75);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    position: relative;
    transition: all var(--transition);
}
.main-nav li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #3498db;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}
.main-nav li a:hover {
    color: #fff;
}
.main-nav li a:hover::after {
    width: 60%;
}
.main-nav li.current a {
    color: #fff;
}
.main-nav li.current a::after {
    width: 60%;
    background: #3498db;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px; height: 18px;
    padding: 0;
    background: none;
    border: 0;
    cursor: pointer;
}
.nav-toggle .bar {
    display: block;
    width: 100%; height: 2px;
    background: #fff;
    transition: var(--transition);
}

/* Hero 横幅 */
.hero-banner {
    padding: 80px 0;
    text-align: center;
    background: url('https://picsum.photos/id/180/1200/400') center/cover no-repeat;
    color: #fff;
    text-shadow: 0 1px 4px rgba(0,0,0,0.6);
}
.hero-title { font-size: 2.2em; margin-bottom: 0.3em; font-weight: 700; letter-spacing: 1px; }
.hero-desc { font-size: 1em; opacity: 0.95; margin: 0; letter-spacing: 0.5px; }

/* ---------- 粘性页脚（短内容时 footer 贴底） ---------- */
.site { display: flex; flex-direction: column; min-height: 100vh; }

/* ---------- 主体与布局（双栏） ---------- */
.main {
    padding: 30px 0;
    flex: 1;
}
.main .container {
    display: flex;
    gap: 24px;
}

/* 右侧边栏 */
.sidebar {
    flex: 0 0 var(--sidebar-width);
    max-width: var(--sidebar-width);
    order: 2;
}
.sidebar .widget {
    background: var(--color-bg-white);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}
.sidebar .widget:last-child { margin-bottom: 0; }

.widget-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-primary);
}
.widget-list { list-style: none; padding: 0; margin: 0; }
.widget-list li {
    padding: 6px 0;
    font-size: 13px;
    border-bottom: 1px dashed #eee;
}
.widget-list li:last-child { border-bottom: 0; }
.widget-list li a { color: #555; }
.widget-list li a:hover { color: var(--color-primary); }

.tagcloud {
    display: grid;
    grid-template-columns: repeat(3, 1fr);  /* D 方案：固定 3 列等宽，每列 76px，无空隙 */
    gap: 6px;
}
/* grid 下 tag-link 自动拉伸填满 cell；居中文字让长标签也好看 */
.tagcloud > .tag-link {
    justify-self: stretch;
    text-align: center;
}
.tagcloud .tag-link {
    display: inline-block;
    padding: 4px 10px;
    font-size: 12px !important;
    background: #f0f0f0;
    border-radius: 3px;
    color: #666;
    transition: filter .2s ease, transform .15s ease;
}
/* hover 时：当前颜色加深 + 轻微下沉 (filter 不影响 layout) */
.tagcloud .tag-link:hover {
    filter: brightness(0.88) saturate(1.4);
    transform: translateY(-1px);
}
.tagcloud .tag-link:active {
    filter: brightness(0.78) saturate(1.5);
    transform: translateY(0);
}

/* ====== 标签云热度分级（5 档） ====== */
/* L1: 1-4 篇 (默认灰底，最小字) */
.tagcloud .tag-link.tag-lv1 { background: #f0f0f0; color: #888; font-size: 11px !important; }
/* L2: 5-9 篇 (浅米色) */
.tagcloud .tag-link.tag-lv2 { background: #f3efe7; color: #6a5d4a; font-size: 12px !important; }
/* L3: 10-19 篇 (浅黄/琥珀) */
.tagcloud .tag-link.tag-lv3 { background: #f0ead2; color: #6e5b1f; font-size: 12px !important; }
/* L4: 20-49 篇 (浅蓝) */
.tagcloud .tag-link.tag-lv4 { background: #e0ecf5; color: #2a5d8a; font-size: 13px !important; }
/* L5: 50+ 篇 (深蓝 + 白字，最显眼) */
.tagcloud .tag-link.tag-lv5 { background: #2a5d8a; color: #fff; font-size: 14px !important; font-weight: 500; }
/* hover 优先级高于 level 颜色 */
.tagcloud .tag-link.tag-lv5:hover { background: var(--color-primary); }
/* L6: 100+ 篇 - 极热门，纯黑底白字 + 更大字号 */
.tagcloud .tag-link.tag-lv6 { background: #1a1a1a; color: #fff; font-size: 15px !important; font-weight: 600; padding: 5px 12px; border-radius: 4px; box-shadow: 0 1px 3px rgba(0,0,0,0.15); }
.tagcloud .tag-link.tag-lv6:hover { background: var(--color-primary); box-shadow: 0 2px 6px rgba(0,0,0,0.25); }

/* 右侧内容区 */
.content-area {
    flex: 1;
    min-width: 0;
    order: 1;
}

/* ---------- 文章列表 ---------- */
.post-list { display: flex; flex-direction: column; gap: 12px; }

.post-item {
    background: var(--color-bg-white);
    border-radius: var(--radius);
    padding: 18px 22px;
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition);
}
.post-item:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.12); }

.post-list .post-title {
    font-size: 17px;
    margin-bottom: 6px;
    font-weight: 600;
}
.post-list .post-title a { color: var(--color-text); }
.post-list .post-title a:hover { color: var(--color-primary); }

.post-meta {
    font-size: 12px;
    color: #999;
    margin-bottom: 8px;
}
.post-meta .sep { margin: 0 6px; }

.post-excerpt {
    color: #666;
    font-size: 13px;
    margin-bottom: 10px;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.read-more {
    display: inline-block;
    font-size: 13px;
    color: var(--color-primary);
    font-weight: 500;
}
.read-more:hover { color: var(--color-primary-dark); }

/* ---------- 单篇文章 ---------- */
.single-post .post-title,
.single-page .post-title {
    font-size: 22px;
    margin-bottom: 0.5em;
}
.post-header { margin-bottom: 1.2em; }

/* ---- 文章正文：GitHub Primer 风格 ---- */
.post-content {
    font-size: 16px;
    line-height: 1.6;
    color: #1f2328;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}
.post-content h1 {
    font-size: 2em;
    font-weight: 600;
    line-height: 1.25;
    margin: 1.5rem 0 0.6rem;
    color: #1f2328;
    padding-bottom: 0.3em;
    border-bottom: 1px solid #d1d9e0;
}
.post-content h2 {
    font-size: 1.5em;
    font-weight: 600;
    line-height: 1.25;
    margin: 1.8rem 0 0.6rem;
    padding-bottom: 0.3em;
    border-bottom: 1px solid #d1d9e0;
    color: #1f2328;
}
.post-content h3 {
    font-size: 1.25em;
    font-weight: 600;
    line-height: 1.25;
    margin: 1.5rem 0 0.5rem;
    color: #1f2328;
}
.post-content h4 { font-size: 1em; font-weight: 600; margin: 1.2rem 0 0.4rem; color: #1f2328; }
.post-content h5 { font-size: 0.875em; font-weight: 600; margin: 1rem 0 0.4rem; color: #1f2328; }
.post-content h6 { font-size: 0.85em; font-weight: 600; margin: 1rem 0 0.4rem; color: #656d76; }
.post-content p { margin: 0 0 16px; }
.post-content img {
    border-radius: 6px;
    margin: 0;
    max-width: 100%;
    height: auto;
    border: 1px solid #d1d9e0;
}
.post-content a {
    color: #0969da;
    text-decoration: none;
}
.post-content a:hover { text-decoration: underline; }
.post-content strong { color: #1f2328; font-weight: 600; }
.post-content em { color: #1f2328; }
.post-content code {
    display: inline;
    border-radius: 6px;
    margin: 0;
    padding: 0.2em 0.4em;
    font-size: 85%;
    color: #1f2328;
    background-color: rgba(175, 184, 193, 0.2);
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}
.post-content pre {
    display: block;
    border-radius: 6px;
    background-color: #f6f8fa;
    padding: 16px;
    font-size: 85%;
    line-height: 1.45;
    overflow-x: auto;
    margin: 0 0 16px;
    color: #1f2328;
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
    border: 1px solid #d1d9e0;
}
.post-content pre code {
    border: none;
    padding: 0;
    margin: 0;
    background: none;
    color: #1f2328;
    font-size: 100%;
}
.post-content hr {
    height: 0.25em;
    margin: 24px 0;
    background-color: #d1d9e0;
    border: 0;
    padding: 0;
}
.post-content blockquote {
    display: block;
    margin: 0 0 16px;
    padding: 0 16px;
    border-left: 4px solid #4096ff;
    color: #656d76;
    background-color: rgba(64, 150, 255, 0.20);
}
.post-content blockquote >:first-child { margin-top: 0; }
.post-content blockquote >:last-child { margin-bottom: 0; }
.post-content mark {
    padding: 0.1em 0.4em;
    background-color: #fff8c5;
    border-radius: 0;
    color: #1f2328;
}
.post-content del, .post-content s { color: #656d76; }
.post-content ul { padding-left: 2em; margin-top: 0; margin-bottom: 16px; }
.post-content ul > li { margin-top: 0.25em; }
.post-content ul > li + li { margin-top: 0.25em; }
.post-content ol { padding-left: 2em; margin-top: 0; margin-bottom: 16px; }
.post-content ol > li { margin-top: 0.25em; }
.post-content ol > li + li { margin-top: 0.25em; }
.post-content li > ul, .post-content li > ol { margin-top: 0.25em; margin-bottom: 0; }
.post-content table {
    width: 100%;
    max-width: 65em;
    margin: 1em auto;
    border-collapse: collapse;
    empty-cells: show;
    border: 1px solid #d1d9e0;
    font-size: 14px;
}
.post-content table tr { border-top: none; }
.post-content table tr:nth-child(2n) { background-color: #f6f8fa; }
.post-content table th {
    padding: 8px 12px;
    font-weight: 600;
    text-align: center;
    background: transparent;
    color: #1f2328;
    border: 1px solid #d1d9e0;
    font-size: 13px;
}
.post-content td {
    padding: 8px 12px;
    color: #1f2328;
    border: 1px solid #d1d9e0;
    text-align: center;
}
.post-content table tr:hover { background-color: rgba(115, 209, 61, 0.06); }

.post-footer {
    margin-top: 1.5em;
    padding-top: 12px;
    border-top: 1px solid #eee;
}
.post-tags a {
    display: inline-block;
    padding: 0 7px;
    margin: 0 4px 4px 0;
    font-size: 12px;
    font-weight: 500;
    line-height: 22px;
    background-color: #ddf4ff;
    color: #0969da;
    border-radius: 2em;
    border: 1px solid rgba(84, 174, 255, 0.4);
    transition: 0.15s ease;
}
.post-tags a:hover {
    background-color: #0969da;
    color: #ffffff;
    border-color: #0969da;
}
.post-tags a:hover { background: var(--color-primary); color: #fff; }

/* 上一篇/下一篇 */
.post-nav {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin: 1.5em 0;
    padding: 12px 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
    font-size: 13px;
}
.post-nav a { color: #666; }
.post-nav a:hover { color: var(--color-primary); }

/* 作者信息卡 */
.author-box {
    display: flex;
    gap: 16px;
    align-items: center;
    padding: 16px;
    margin: 1.5em 0;
    background: #f9f9f9;
    border-radius: var(--radius);
}
.author-box img { border-radius: 50%; }
.author-name { margin: 0 0 4px; font-size: 15px; font-weight: 600; }
.author-desc { margin: 0; font-size: 13px; color: #999; }

/* ---------- 分页 ---------- */
.pagination {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px;
    list-style: none;
    padding: 0;
    margin: 1.5em 0;
}
.pagination li { list-style: none; }
.pagination a, .pagination span {
    display: inline-block;
    min-width: 36px;
    height: 36px;
    line-height: 36px;
    padding: 0 10px;
    text-align: center;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 13px;
}
.pagination a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pagination .current { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ---------- 归档页 ---------- */
.archive-header {
    margin-bottom: 1.5em;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-primary);
}
.archive-title { font-size: 18px; margin: 0; }
.archive-desc { color: #999; margin: 4px 0 0; font-size: 13px; }

/* ---------- 评论 ---------- */
.comments {
    margin-top: 2em;
    padding-top: 1.5em;
    border-top: 1px solid #eee;
}
.comments-title { font-size: 16px; margin-bottom: 1em; }

.comment-list { list-style: none; padding: 0; margin: 0 0 1.5em; }
.comment-list .comment-body {
    padding: 12px 0;
    border-bottom: 1px dashed #eee;
}
.comment-list .comment-meta { font-size: 12px; color: #999; margin-bottom: 4px; }
.comment-list .comment-author { font-weight: 600; color: var(--color-text); }
.comment-list .comment-content { margin: 8px 0; font-size: 14px; }
.comment-children { list-style: none; padding-left: 24px; margin-top: 8px; border-left: 2px solid #eee; }

.respond { margin-top: 1.5em; }
.respond-title { font-size: 16px; margin-bottom: 1em; }
.cancel-comment-reply { font-size: 12px; margin-left: 10px; color: #999; }

.comment-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; }
.comment-field { display: flex; flex-direction: column; margin-bottom: 10px; }
.comment-field label { font-size: 12px; margin-bottom: 4px; color: #999; }
.comment-field label.required::after { content: " *"; color: #e74c3c; }
.text, .textarea {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 14px;
    transition: border-color var(--transition);
}
.text:focus, .textarea:focus { outline: none; border-color: var(--color-primary); }
.textarea { resize: vertical; min-height: 100px; }
.comment-submit { margin-top: 8px; }
.submit {
    padding: 8px 24px;
    background: var(--color-primary);
    color: #fff;
    border: 0;
    border-radius: var(--radius);
    font-size: 14px;
    cursor: pointer;
    transition: background var(--transition);
}
.submit:hover { background: var(--color-primary-dark); }

/* ---------- 404 ---------- */
.error-404 { text-align: center; padding: 60px 0; }
.error-code { font-size: 72px; font-weight: 800; color: var(--color-primary); line-height: 1; }
.error-title { font-size: 20px; margin-top: 12px; }
.error-text { color: #999; font-size: 14px; }
.error-search { max-width: 400px; margin: 20px auto; display: flex; gap: 8px; }
.error-home { margin-top: 20px; }

.search-form { display: flex; gap: 8px; }
.search-field {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 14px;
}
.search-submit {
    padding: 8px 18px;
    background: var(--color-primary);
    color: #fff;
    border: 0;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 14px;
}

/* ---------- 提示框短代码 ---------- */
.note {
    padding: 12px 16px;
    margin: 1em 0;
    border-radius: var(--radius);
    border-left: 4px solid;
    font-size: 14px;
}
.note-info    { background: #e8f4f8; border-color: #3498db; }
.note-warning { background: #fdf6ec; border-color: #e6a23c; }
.note-error   { background: #fef0f0; border-color: #f56c6c; }
.note-success { background: #f0f9eb; border-color: #67c23a; }

/* ---------- 页脚（深色） ---------- */
.site-footer {
    margin-top: 30px;
    padding: 24px 0;
    background: var(--color-header-bg);
    color: rgba(255,255,255,0.7);
    font-size: 12px;
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}
.footer-info p { margin: 2px 0; }
.footer-info a { color: rgba(255,255,255,0.9); }
.footer-info a:hover { color: #fff; }
.footer-info .sep { margin: 0 6px; opacity: 0.4; }

/* 返回顶部 */
.back-to-top {
    position: fixed;
    right: 20px; bottom: 20px;
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    border: 0;
    font-size: 16px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 99;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-primary-dark); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
    .main .container { flex-direction: column; }
    .sidebar {
        order: 2;
        flex: 1 1 100%;
        max-width: 100%;
        width: 100%;
    }
    .content-area { order: 1; }
    .sidebar .widget { display: inline-block; vertical-align: top; width: calc(50% - 10px); margin-right: 16px; }
    .sidebar .widget:nth-child(even) { margin-right: 0; }
}

@media (max-width: 640px) {
    .nav-toggle { display: flex; }
    .main-nav {
        position: fixed;
        top: 56px;
        left: 0; right: 0;
        background: rgba(15,16,17,0.98);
        backdrop-filter: blur(10px);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        z-index: 99;
    }
    .main-nav.open { max-height: 70vh; overflow-y: auto; }
    .main-nav ul { flex-direction: column; padding: 8px 0; gap: 0; }
    .main-nav li a { padding: 14px 24px; border-bottom: 1px solid rgba(255,255,255,0.08); }
    .main-nav li a::after { display: none; }
    .main-nav li:last-child a { border-bottom: 0; }

    .sidebar .widget { width: 100%; margin-right: 0; }
    .single-post .post-title,
    .single-page .post-title { font-size: 18px; }
    .hero-title { font-size: 1.5em; }
    .error-code { font-size: 48px; }
    .footer-inner { flex-direction: column; text-align: center; }
}

/* ---------- 卡片可点（JS 委托方案）---------- */
.post-item {
    position: relative;
    cursor: pointer;
}
.post-item:focus { outline: none; }
.post-item:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.post-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    height: 0;
    width: 3px;
    background: var(--color-primary);
    border-radius: 0 var(--radius) var(--radius) 0;
    transform: translateY(-50%);
    transition: height 0.25s ease;
    pointer-events: none;
    z-index: 1;
}
.post-item:hover::before { height: 60%; }
.post-item:hover { transform: translateY(-2px); }
.post-item:hover { box-shadow: 0 6px 20px rgba(52, 152, 219, 0.15); }

/* mobile: smaller lift */
@media (max-width: 768px) {
    .post-item:hover { transform: none; }
    .post-item:hover::before { height: 40%; }
}
/* ============================================================
   AI 进化可视化页面专用样式

/**
 * 进化记录页 — Linear Design System v5
 * ──────────────────────────────────
 * Tokens: :root 层面，供 body / .container / .ai-evo-page 共享
 */


:root {
    --bg-deep: #08090a;
    --bg-panel: #0f1011;
    --bg-surface: #191a1b;
    --bg-elevated: #23252a;
    --text-primary: #f7f8f8;
    --text-secondary: #d0d6e0;
    --text-tertiary: #8a8f98;
    --text-muted: #62666d;
    --accent-brand: #5e6ad2;
    --accent-interactive: #7170ff;
    --accent-hover: #828fff;
    --border-subtle: rgba(255,255,255,0.05);
    --border-default: rgba(255,255,255,0.08);
    --border-strong: rgba(255,255,255,0.12);
    --card-bg: rgba(255,255,255,0.02);
    --card-bg-hover: rgba(255,255,255,0.04);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

/* Page 与容器背景 */
body.is-page { background: var(--bg-deep) !important; }
body.is-page .main { background: transparent; }
body.is-page .container { background: transparent !important; }
body.is-page .content-area { background: transparent !important; padding: 0 !important; }
body.is-page .footer { background: transparent; }
body.is-page .site-header, body.is-list .site-header { background: var(--bg-panel) !important; border-bottom: 1px solid var(--border-default); }
body.is-page .header-inner, body.is-list .header-inner { border-bottom: none; }
body.is-page .site-footer { background: var(--bg-deep) !important; border-top: 1px solid var(--border-subtle); }

.evo-main-full { width: 100%; max-width: 100%; }
.evo-container-full { max-width: 1000px; margin: 0 auto; padding: 0; }

/* === 页面卡片 === */
.ai-evo-page {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    font-feature-settings: "cv01", "ss03";
    color: var(--text-primary);
    line-height: 1.6;
    max-width: 1000px;
    margin: 0 auto;
    padding: 28px;
    background: var(--bg-panel);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
}

/* ====== HEADER ====== */
.evo-header {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 12px 0 28px;
    margin-bottom: 32px;
    border-bottom: 1px solid var(--border-subtle);
}

.evo-brand-icon { flex-shrink: 0; }

.avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    padding: 3px;
    background: linear-gradient(135deg, var(--accent-brand), var(--accent-interactive));
    animation: evo-pulse 3s ease-in-out infinite;
}

.avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

@keyframes evo-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(94,106,210,0.5); }
    50% { box-shadow: 0 0 0 12px rgba(94,106,210,0); }
}

.evo-header-text { flex: 1; }

.evo-title {
    font-size: 1.5rem;
    font-weight: 590;
    color: var(--text-primary);
    margin: 0 0 2px;
    letter-spacing: -0.024em;
}

.evo-subtitle {
    font-size: 0.88rem;
    color: var(--text-tertiary);
    margin: 0 0 6px;
    font-weight: 400;
}

.evo-header-meta { display: flex; gap: 8px; align-items: center; }

.evo-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 510;
    color: var(--text-tertiary);
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    padding: 2px 10px;
    border-radius: 9999px;
}

/* ====== STATS GRID ====== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 20px 12px;
    text-align: center;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s cubic-bezier(0.4,0,0.2,1);
}

.stat-card:hover {
    background: var(--card-bg-hover);
    border-color: var(--border-default);
    transform: translateY(-2px);
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 590;
    color: var(--text-primary);
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.81rem;
    font-weight: 400;
    color: var(--text-tertiary);
}

/* ====== SECTION ====== */
.evo-section { margin-bottom: 36px; }

.evo-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.evo-section-title {
    font-size: 1.13rem;
    font-weight: 590;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.evo-section-icon { font-size: 1rem; }

/* ====== EVOLUTION METRICS ====== */
.evo-card-gradient {
    background: rgba(94,106,210,0.03);
    border: 1px solid rgba(94,106,210,0.08);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    position: relative;
    overflow: hidden;
}

.evo-metrics-row {
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: 12px;
}

.evo-metric { text-align: center; flex: 1; }
.evo-metric-icon { font-size: 1.5rem; margin-bottom: 4px; }

.evo-metric-value {
    font-size: 1.5rem;
    font-weight: 590;
    color: var(--accent-interactive);
    margin-bottom: 2px;
    letter-spacing: -0.02em;
}

.evo-metric-label {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-tertiary);
}

.evo-metric-divider {
    width: 1px;
    height: 48px;
    background: var(--border-subtle);
    flex-shrink: 0;
}

/* ====== SKILLS ====== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.skill-card {
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 16px;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s cubic-bezier(0.4,0,0.2,1);
}

.skill-card:hover {
    background: var(--card-bg-hover);
    border-color: var(--border-default);
    transform: translateY(-2px);
}

.skill-card-top { margin-bottom: 8px; }

.skill-category {
    display: inline-block;
    font-size: 0.69rem;
    font-weight: 510;
    color: var(--accent-interactive);
    background: rgba(113,112,255,0.08);
    padding: 2px 10px;
    border-radius: 9999px;
}

.skill-name {
    font-size: 0.94rem;
    font-weight: 590;
    color: var(--text-primary);
    margin: 0 0 6px;
    letter-spacing: -0.01em;
    word-break: break-all;
}

.skill-description {
    font-size: 0.81rem;
    font-weight: 400;
    color: var(--text-tertiary);
    line-height: 1.5;
    margin: 0 0 10px;
}

.skill-tags { display: flex; gap: 6px; flex-wrap: wrap; }

.skill-tag {
    display: inline-block;
    font-size: 0.69rem;
    font-weight: 400;
    color: var(--text-muted);
    background: transparent;
    border: 1px solid var(--border-subtle);
    padding: 1px 8px;
    border-radius: 9999px;
}

/* ====== MEMORY ====== */
.memory-card {
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-left: 3px solid;
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    margin-bottom: 10px;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.memory-card:hover {
    background: var(--card-bg-hover);
    border-color: var(--border-default);
}

.memory-label {
    display: inline-block;
    font-size: 0.69rem;
    font-weight: 510;
    padding: 2px 10px;
    border-radius: 9999px;
    margin-bottom: 6px;
}

.memory-card.type-system { border-left-color: var(--accent-brand); }
.memory-card.type-user { border-left-color: var(--accent-interactive); }
.memory-card.type-system .memory-label { background: rgba(94,106,210,0.08); color: var(--accent-brand); }
.memory-card.type-user .memory-label { background: rgba(113,112,255,0.08); color: var(--accent-interactive); }

.memory-card p {
    font-size: 0.81rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ====== TIMELINE ====== */
.timeline {
    position: relative;
    padding: 4px 0 4px 20px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 9px;
    top: 10px;
    bottom: 10px;
    width: 1px;
    background: linear-gradient(180deg, var(--accent-interactive) 0%, var(--border-subtle) 80%, transparent);
}

.timeline-item {
    position: relative;
    padding-left: 24px;
    padding-bottom: 24px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
    position: absolute;
    left: -20px;
    top: 4px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-interactive);
    border: 2px solid var(--bg-panel);
    box-shadow: 0 0 0 1px rgba(113,112,255,0.2);
}

.timeline-date {
    font-size: 0.75rem;
    font-weight: 510;
    color: var(--accent-interactive);
    margin-bottom: 2px;
}

.timeline-title {
    font-size: 0.94rem;
    font-weight: 590;
    color: var(--text-primary);
    margin: 0 0 4px;
    letter-spacing: -0.01em;
}

.timeline-desc {
    font-size: 0.81rem;
    font-weight: 400;
    color: var(--text-tertiary);
    line-height: 1.55;
    margin: 0;
}

/* ====== FOOTER ====== */
.evo-footer {
    text-align: center;
    padding: 20px 0 4px;
    border-top: 1px solid var(--border-subtle);
    margin-top: 8px;
}

.evo-footer p {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-muted);
    margin: 0;
}

/* ====== FADE-IN ====== */
.ai-evo-page .evo-header,
.ai-evo-page .stats-grid,
.ai-evo-page .evo-section {
    animation: evo-fade-up 0.4s ease both;
}

.ai-evo-page .evo-header { animation-delay: 0s; }
.ai-evo-page .stats-grid { animation-delay: 0.06s; }
.ai-evo-page .evo-section:nth-of-type(1) { animation-delay: 0.12s; }
.ai-evo-page .evo-section:nth-of-type(2) { animation-delay: 0.18s; }
.ai-evo-page .evo-section:nth-of-type(3) { animation-delay: 0.24s; }
.ai-evo-page .evo-section:nth-of-type(4) { animation-delay: 0.3s; }
.ai-evo-page .evo-footer { animation-delay: 0.36s; }

@keyframes evo-fade-up {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ====== RESPONSIVE ====== */
@media (max-width: 900px) {
    .ai-evo-page { padding: 20px 16px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .skills-grid { grid-template-columns: 1fr; }
    .evo-metrics-row { gap: 8px; }
    .evo-metric-value { font-size: 1.2rem; }
}

@media (max-width: 600px) {
    .evo-header { flex-direction: column; text-align: center; gap: 12px; }
    .evo-header-meta { justify-content: center; }
    .stats-grid { gap: 8px; }
    .stat-card { padding: 14px 8px; }
    .stat-number { font-size: 1.35rem; }
    .evo-card-gradient { padding: 16px 12px; }
    .evo-metric-divider { height: 32px; }
    .skill-card { padding: 12px; }
    .timeline { padding-left: 12px; }
}

/* ====== ACCESSIBILITY ====== */
@media (prefers-reduced-motion: reduce) {
    .avatar { animation: none; }
    .ai-evo-page .evo-header,
    .ai-evo-page .stats-grid,
    .ai-evo-page .evo-section,
    .ai-evo-page .evo-footer { animation: none; }
}

@media (hover: none) {
    .stat-card:hover,
    .skill-card:hover,
    .memory-card:hover { transform: none !important; }
}


/* 归档 widget 折叠：默认 3 行 + 点击展开 */
.widget-archive .archive-details { margin-top: 4px; }
.widget-archive .archive-summary {
    cursor: pointer;
    list-style: none;
    padding: 8px 0;
    color: var(--color-primary);
    font-size: 13px;
    user-select: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.widget-archive .archive-summary::-webkit-details-marker { display: none; }
.widget-archive .archive-summary::before {
    content: '▸';
    display: inline-block;
    transition: transform .2s;
}
.widget-archive details[open] .archive-summary::before { transform: rotate(90deg); }
.widget-archive details[open] .archive-default { display: none; }
.widget-archive details:not([open]) .archive-expanded { display: none; }

/* 折叠态：只显示前 3 行 li */
.widget-archive .archive-list li { display: none; }
.widget-archive .archive-list li:nth-child(-n+10) { display: list-item; }
.widget-archive details[open] .archive-list li { display: list-item; }


/* ====== 导航栏搜索框 ====== */
.nav-search {
    position: relative;
    display: flex;
    align-items: center;
    margin-left: auto;
}
.nav-search-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    /* 硬编码浅色, 避免被 :root --color-text: #333 覆盖 */
    color: #e8e8e8;
    cursor: pointer;
    transition: color var(--transition, 0.2s ease), background var(--transition, 0.2s ease);
}
.nav-search-toggle:hover {
    color: var(--color-primary, #3498db);
    background: rgba(255, 255, 255, 0.06);
}
.nav-search-toggle svg { display: block; }

.nav-search-form {
    width: 0;
    overflow: hidden;
    transition: width var(--transition, 0.2s ease);
    margin-left: 0;
}
.nav-search-form.is-open { width: 180px; }

.nav-search-input {
    width: 100%;
    height: 32px;
    padding: 0 10px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    color: #e8e8e8;
    font-size: 13px;
    outline: none;
    transition: border-color var(--transition, 0.2s ease), background var(--transition, 0.2s ease);
}
.nav-search-input::placeholder { color: rgba(232, 232, 232, 0.45); }
.nav-search-input:focus {
    border-color: var(--color-primary, #3498db);
    background: rgba(255, 255, 255, 0.10);
}

/* 移动端 (≤640px) */
@media (max-width: 640px) {
    .nav-search-form.is-open { width: calc(100vw - 220px); }
    .nav-search-form.is-open .nav-search-input { font-size: 14px; }
}


/* ====== 通用折叠 (更多标签 / 更多归档) ====== */
details.collapse-more { margin-top: 8px; }
/* 在 .tagcloud (flex-wrap 容器) 内让 details 强制占满整行，下一个 flex item 自动换行 */
/* grid 容器下让 details 跨满所有列；flex:0 0 100% 在 grid item 上无效所以保留也无害 */
.tagcloud > details.collapse-more {
    flex: 0 0 100%;
    grid-column: 1 / -1;
    display: block;
}
.collapse-summary {
    cursor: pointer;
    list-style: none;
    padding: 6px 0;
    color: var(--color-primary);
    font-size: 13px;
    user-select: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color .15s ease;
}
.collapse-summary:hover { color: var(--color-primary-dark); }
.collapse-summary::-webkit-details-marker { display: none; }
.collapse-summary::marker { display: none; content: ''; }
.collapse-summary::before {
    content: '▸';
    display: inline-block;
    transition: transform .2s ease;
    font-size: 11px;
}
details.collapse-more[open] > .collapse-summary::before { transform: rotate(90deg); }

/* 折叠展开区域 (标签云溢出 / 归档 pill) */
.tagcloud-others {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
    padding: 8px 0 2px 0;
    border-top: 1px dashed var(--border-subtle, #e8e8e8);
}
.archive-pill {
    display: inline-block;
    padding: 3px 10px;
    background: var(--color-bg-light, #f5f7fa);
    border-radius: 12px;
    font-size: 12px;
    color: var(--color-text, #333);
    transition: background .15s, color .15s;
}
.archive-pill:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ========================================================================
   Dark Mode — GitHub Primer Dark
   ======================================================================== */
:root.dark {
    --color-text: #e6edf3;
    --color-text-light: #8b949e;
    --color-bg: #0d1117;
    --color-bg-white: #161b22;
    --color-bg-code: #161b22;
    --color-border: #30363d;
    --color-header-bg: #010409;
    --color-primary: #58a6ff;
    --color-primary-dark: #79c0ff;
}

body.dark { background: var(--color-bg); color: var(--color-text); }

/* 暗黑模式 toggle 按钮 */
.nav-dark-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    color: #e6edf3;
    cursor: pointer;
    transition: color var(--transition, 0.2s ease), background var(--transition, 0.2s ease);
}
.nav-dark-toggle:hover {
    color: #58a6ff;
    background: rgba(56, 139, 253, 0.1);
}
.nav-dark-toggle .icon-sun { display: none; }
.nav-dark-toggle .icon-moon { display: block; }
:root.dark .nav-dark-toggle .icon-sun { display: block; }
:root.dark .nav-dark-toggle .icon-moon { display: none; }

/* 暗黑模式内容覆盖 */
:root.dark a { color: #58a6ff; }
:root.dark .main-nav li a { color: rgba(230,237,243,0.6); }
:root.dark .main-nav li a:hover { color: #e6edf3; }
:root.dark .main-nav li.current a { color: #e6edf3; }
:root.dark .nav-parent-label { color: rgba(230,237,243,0.6); }
:root.dark .nav-parent-label:hover { color: #e6edf3; }
:root.dark .nav-login a { color: rgba(230,237,243,0.6); }
:root.dark .nav-login a:hover { color: #e6edf3; }
:root.dark .site-brand .site-title a { color: #f0f6fc; }
:root.dark .widget { background: var(--color-bg-white); border-color: var(--color-border); color: var(--color-text); }
:root.dark .post-item { background: var(--color-bg-white); border-color: var(--color-border); }
:root.dark .post-item h2 a { color: var(--color-text); }
:root.dark .post-item .post-meta { color: var(--color-text-light); }
:root.dark .post-item .post-excerpt { color: var(--color-text-light); }
:root.dark .page-header { background: var(--color-bg-white); border-color: var(--color-border); }
:root.dark .page-header h1 { color: var(--color-text); }

/* ---- 文章正文：Primer Dark 风格 ---- */
:root.dark .post-content, :root.dark .post-body { color: #e6edf3; }
:root.dark .post-content h1, :root.dark .post-body h1 {
    color: #f0f6fc;
    border-bottom-color: #30363d;
}
:root.dark .post-content h2, :root.dark .post-body h2 {
    color: #f0f6fc;
    border-bottom-color: #30363d;
}
:root.dark .post-content h3, :root.dark .post-body h3 { color: #f0f6fc; }
:root.dark .post-content h4, :root.dark .post-body h4,
:root.dark .post-content h5, :root.dark .post-body h5 { color: #f0f6fc; }
:root.dark .post-content h6, :root.dark .post-body h6 { color: #8b949e; }
:root.dark .post-content a, :root.dark .post-body a { color: #58a6ff; }
:root.dark .post-content a:hover, :root.dark .post-body a:hover { color: #79c0ff; }
:root.dark .post-content strong, :root.dark .post-body strong { color: #f0f6fc; }
:root.dark .post-content em, :root.dark .post-body em { color: #e6edf3; }
:root.dark .post-content blockquote, :root.dark .post-body blockquote {
    border-left-color: #4096ff;
    color: #8b949e;
    background-color: rgba(64, 150, 255, 0.20);
}
:root.dark .post-content code, :root.dark .post-body code {
    background: rgba(110, 118, 129, 0.4);
    color: #e6edf3;
}
:root.dark .post-content pre, :root.dark .post-body pre {
    background: #161b22;
    color: #e6edf3;
    border-color: #30363d;
}
:root.dark .post-content pre code, :root.dark .post-body pre code { color: #e6edf3; }
:root.dark .post-content hr, :root.dark .post-body hr {
    background-color: #30363d;
}
:root.dark .post-content mark, :root.dark .post-body mark {
    background: rgba(187, 128, 9, 0.4);
    color: #e6edf3;
}
:root.dark .post-content del, :root.dark .post-body del,
:root.dark .post-content s, :root.dark .post-body s { color: #8b949e; }
:root.dark .post-content table, :root.dark .post-body table { border-color: #30363d; }
:root.dark .post-content tr, :root.dark .post-body tr { border-color: #30363d; background-color: #0d1117; }
:root.dark .post-content tr:nth-child(2n), :root.dark .post-body tr:nth-child(2n) { background-color: #161b22; }
:root.dark .post-content th, :root.dark .post-body th {
    background: transparent;
    color: #f0f6fc;
    border-color: #30363d;
    font-weight: 600;
}
:root.dark .post-content td, :root.dark .post-body td { color: #e6edf3; border-color: #30363d; }
:root.dark .post-content table tr:hover, :root.dark .post-body table tr:hover { background-color: rgba(115, 209, 61, 0.06); }
:root.dark .post-content img, :root.dark .post-body img { border-color: #30363d; }

:root.dark .pagination a { background: var(--color-bg-white); color: var(--color-text); border-color: var(--color-border); }
:root.dark .pagination .current { background: var(--color-primary); color: #0d1117; border-color: var(--color-primary); }
:root.dark input[type=search], :root.dark textarea {
    background: #0d1117;
    color: var(--color-text);
    border-color: #30363d;
}
:root.dark .tag-link { background: var(--color-bg-white); color: var(--color-text); border-color: var(--color-border); }
:root.dark .tag-link:hover { background: var(--color-primary); color: #0d1117; border-color: var(--color-primary); }
:root.dark .category-list a { color: var(--color-text); }
:root.dark .category-list a:hover { color: var(--color-primary); }
:root.dark .widget-list li a { color: var(--color-text) !important; }
:root.dark .widget-list li a:hover { color: var(--color-primary); }
:root.dark .post-tags a {
    background: rgba(56, 139, 253, 0.1);
    color: #58a6ff;
    border-color: rgba(56, 139, 253, 0.4);
}
:root.dark .post-tags a:hover {
    background: #58a6ff;
    color: #0d1117;
    border-color: #58a6ff;
}
:root.dark .post-footer { border-top-color: #30363d; }
:root.dark .post-nav { border-color: #30363d; }
:root.dark .post-nav a { color: #e6edf3; }
:root.dark .post-nav a:hover { color: #58a6ff; }
:root.dark .author-box { background: #161b22; border-color: #30363d; }
:root.dark .author-desc { color: #8b949e; }
:root.dark .comments { border-top-color: #30363d; }
:root.dark .comment-list .comment-body { border-bottom-color: #30363d; }
:root.dark .comment-children { border-left-color: #30363d; }
:root.dark .respond .text, :root.dark .respond .textarea {
    background: #0d1117;
    color: #e6edf3;
    border-color: #30363d;
}
:root.dark .respond .text:focus, :root.dark .respond .textarea:focus {
    border-color: #58a6ff;
    box-shadow: 0 0 0 3px rgba(56, 139, 253, 0.3);
}

/* ========================================================================
   Navigation Dropdown & Icon Alignment Fix
   ======================================================================== */

/* Dropdown menu */
.menu-item.has-children {
    position: relative;
}
.nav-parent-label {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 10px 20px;
    color: rgba(255,255,255,0.75);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: color .2s;
    user-select: none;
}
.nav-parent-label svg {
    transition: transform .2s;
    flex-shrink: 0;
}
.nav-parent-label:hover,
.menu-item.has-children.current .nav-parent-label {
    color: #fff;
}
.main-nav .sub-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 160px;
    background: #1a1d23;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    padding: 6px 0;
    z-index: 1000;
    flex-direction: column;
}
.menu-item.has-children:hover > .sub-menu,
.menu-item.has-children.open > .sub-menu {
    display: flex;
}
.menu-item.has-children:hover > .nav-parent-label svg {
    transform: rotate(180deg);
}
.main-nav .sub-menu li a {
    display: block;
    padding: 8px 16px;
    color: rgba(255,255,255,0.7);
    font-size: 13px;
    white-space: nowrap;
    transition: background .15s, color .15s;
}
.main-nav .sub-menu li a:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
}
.main-nav .sub-menu li.current a {
    color: #3498db;
}

/* 移动端 */
@media (max-width: 640px) {
    .nav-toggle { display: flex; }
    .main-nav {
        display: none;
        position: absolute;
        top: 56px;
        left: 0;
        right: 0;
        background: #0f1011;
        border-top: 1px solid rgba(255,255,255,0.08);
        z-index: 999;
    }
    .main-nav.open { display: block; max-height: 70vh; overflow-y: auto; }
    .main-nav ul { flex-direction: column; padding: 8px 0; gap: 0; }
    .main-nav li a { padding: 14px 24px; border-bottom: 1px solid rgba(255,255,255,0.08); }
    .main-nav .sub-menu {
        display: block;
        position: static;
        background: transparent;
        border: none;
        box-shadow: none;
        padding: 0;
    }
    .main-nav .sub-menu li a { padding: 8px 24px 8px 40px; font-size: 13px; }
    .nav-parent-label { padding: 14px 24px; }
    .main-nav li a::after { display: none; }
    .main-nav li:last-child a { border-bottom: 0; }
}

/* Fix nav-dark vertical alignment — match .nav-search */
.nav-dark {
    display: flex;
    align-items: center;
}


/* Mobile hamburger menu — fix search/dark icon alignment */
@media (max-width: 640px) {
    .nav-search {
        display: flex;
        align-items: center;
        margin-left: 0;
        padding: 14px 24px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .nav-dark {
        display: flex;
        align-items: center;
        padding: 14px 24px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .nav-login a {
        padding: 14px 24px;
    }
}


/* ===== 个人信息卡片 ===== */
.widget-profile { text-align: center; }
.profile-card { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.profile-avatar { margin-bottom: 4px; }
.avatar-img { width: 158px; height: 158px; border-radius: 50%; object-fit: cover; display: block; border: 3px solid var(--color-primary); }
.profile-name { font-size: 18px; font-weight: 700; margin: 0; color: var(--color-text); }
.profile-bio { font-size: 12px; color: #888; margin: 0 0 8px 0; line-height: 1.5; }

/* 社交链接 */
.profile-social { display: flex; gap: 12px; margin: 4px 0; }
.social-link { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--color-bg-gray, #f0f0f0); color: #555; font-size: 16px; transition: all 0.2s; text-decoration: none; }
.social-link:hover { background: var(--color-primary); color: #fff; transform: translateY(-2px); }

/* 链接区 */
.profile-links { width: 100%; margin-top: 4px; }
.links-title { display: block; font-size: 12px; color: #999; margin-bottom: 6px; font-weight: 600; }
.profile-link { display: block; padding: 4px 0; font-size: 13px; color: #555; text-decoration: none; transition: color 0.2s; }
.profile-link:hover { color: var(--color-primary); }


/* 暗黑模式 - 个人信息卡片 */
[data-theme="dark"] .profile-bio { color: #aaa; }
[data-theme="dark"] .social-link { background: #2a2a2a; color: #aaa; }
[data-theme="dark"] .social-link:hover { background: var(--color-primary); color: #fff; }
[data-theme="dark"] .profile-link { color: #aaa; }
[data-theme="dark"] .profile-link:hover { color: var(--color-primary); }
[data-theme="dark"] .links-title { color: #777; }

/* 统计数据 */
.profile-stats { display: flex; gap: 0; width: 100%; border-top: 1px solid #eee; border-bottom: 1px solid #eee; padding: 8px 0; margin: 4px 0; }
.stat-item { flex: 1; text-align: center; border-right: 1px solid #eee; }
.stat-item:last-child { border-right: none; }
.stat-count { display: block; font-size: 16px; font-weight: 700; color: var(--color-text); }
.stat-label { display: block; font-size: 11px; color: #999; margin-top: 2px; }

/* 暗黑模式 */
[data-theme="dark"] .profile-bio { color: #aaa; }
[data-theme="dark"] .profile-stats { border-color: #333; }
[data-theme="dark"] .stat-item { border-color: #333; }
[data-theme="dark"] .stat-label { color: #777; }