:root{--bg:#f5f7fa;--surface:#ffffff;--surface-2:#f1f5f9;--text:#0f172a;--muted:#64748b;--border:#e6e9ef;--primary:#2563eb;--primary-soft:#e8efff;--ring:rgba(37,99,235,.16);--shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06);--radius:14px;--radius-sm:10px;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;--font-head:inherit;--font-mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;--maxw:1040px;--content-w:880px;}
html[data-theme="dark"]{--bg:#0b1020;--surface:#121826;--surface-2:#0f1524;--text:#e6e9ef;--muted:#94a3b8;--border:#1f2a3d;--primary:#6ea8ff;--primary-soft:#16233d;--ring:rgba(110,168,255,.24);--shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px rgba(0,0,0,.35);}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);color:var(--text);background:var(--bg);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;transition:background .2s ease,color .2s ease}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
/* 顶栏 */
.site-head{position:sticky;top:0;z-index:20;background:var(--surface);border-bottom:1px solid var(--border)}
.head-in{display:flex;align-items:center;justify-content:space-between;height:62px;gap:16px}
.brand{font-weight:800;font-size:18px;color:var(--text);letter-spacing:.2px}
.brand:hover{text-decoration:none}
.nav{display:flex;align-items:center;gap:4px}
.nav a{color:var(--muted);padding:8px 12px;border-radius:8px;font-size:15px}
.nav a:hover{color:var(--text);background:var(--surface-2);text-decoration:none}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;margin-left:6px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--muted);cursor:pointer;transition:.15s}
.theme-toggle:hover{color:var(--primary);border-color:var(--primary);box-shadow:0 0 0 4px var(--ring)}
.ic{display:block}
.ic-sun{display:none}
html[data-theme="dark"] .ic-sun{display:block}
html[data-theme="dark"] .ic-moon{display:none}
/* hero */
.hero{padding:44px 0 6px}
.hero h1{margin:0 0 8px;font-size:34px;line-height:1.2}
.hero p{margin:0;color:var(--muted);max-width:640px}
main{padding:22px 0 56px}
.page-title{font-size:26px;margin:6px 0 22px}
/* 首页 / 列表 */
.home{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:32px;align-items:start}
.post-list{display:grid;gap:18px}
.card-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;box-shadow:var(--shadow);transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}
.card-item:hover{transform:translateY(-2px);border-color:var(--primary)}
.byline{display:inline-flex;align-items:center;gap:8px}
.avatar{border-radius:50%;object-fit:cover;flex:none;display:inline-block;vertical-align:middle;border:1px solid var(--border);background:var(--surface-2)}
.avatar-sm{width:34px;height:34px}
.avatar-lg{width:56px;height:56px}
.avatar-letter{display:inline-flex;align-items:center;justify-content:center;background:var(--primary-soft);color:var(--primary);font-weight:700;line-height:1}
.avatar-sm.avatar-letter{font-size:15px}
.avatar-lg.avatar-letter{font-size:24px}
.card-body{padding:16px 20px;flex:1;min-width:0}
.card-body h3{margin:0 0 8px;font-size:20px;line-height:1.35}
.card-body h3 a{color:var(--text)}
.card-body h3 a:hover{color:var(--primary);text-decoration:none}
.excerpt{color:var(--muted);margin:0 0 12px;font-size:15px}
.meta{color:var(--muted);font-size:13.5px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.card-item .meta{margin:0}
.card-item .author{color:var(--primary);font-weight:600}
.chip{background:var(--primary-soft);color:var(--primary);border-radius:999px;padding:3px 12px;font-size:12.5px;font-weight:600}
.side{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;align-content:start;min-width:0;overflow:hidden}
.side-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow);min-width:0;overflow:hidden}
.side-card h4{margin:0 0 10px;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.mini-list{list-style:none;margin:0;padding:0}
.mini-list li{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--border);min-width:0}
.mini-list li:last-child{border-bottom:0}
.mini-list a{color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.mini-list a:hover{color:var(--primary);text-decoration:none}
.mini-list .mini-main{flex-direction:column;align-items:stretch;gap:2px}
.mini-sub{color:var(--muted);font-size:12px;display:block;text-align:left}
.featured-list{list-style:none;counter-reset:ft;margin:0;padding:0}
.featured-list li{counter-increment:ft;display:flex;gap:9px;padding:8px 0;border-bottom:1px solid var(--border);min-width:0}
.featured-list li:last-child{border-bottom:0}
.featured-list li::before{content:counter(ft);font-weight:800;color:var(--primary);font-size:13px;line-height:1.6;flex:none}
.featured-list a{color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.featured-list a:hover{color:var(--primary);text-decoration:none}
.side-about{display:flex;gap:12px;align-items:flex-start}
.side-name{margin:0;font-weight:700}
.side-bio{margin:4px 0 0;color:var(--muted);font-size:13.5px}
.side-stat{margin:6px 0 0;color:var(--muted);font-size:12.5px}
.cnt{color:var(--muted);font-size:12.5px;background:var(--surface-2);border-radius:999px;padding:1px 9px}
a.chip:hover{text-decoration:none;filter:brightness(.94)}
.cat-back{margin:-10px 0 18px;color:var(--muted);font-size:14px}
.capsules{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.capsules a{display:inline-flex;align-items:center;gap:7px;background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:5px 13px;color:var(--text);font-size:13.5px;transition:.15s}
.capsules a:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}
.ad-slot{display:block;position:relative;background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius);padding:14px 16px;overflow:hidden}
.ad-slot:hover{border-color:var(--primary);text-decoration:none;box-shadow:var(--shadow)}
.ad-tag{display:inline-block;font-size:10px;color:var(--muted);border:1px solid var(--border);border-radius:4px;padding:0 5px;line-height:1.6}
.ad-img{width:100%;max-width:100%;height:auto;border-radius:10px;margin:10px 0 0;display:block}
.ad-title{margin:8px 0 0;color:var(--text);font-weight:600}
.ad-note{margin:4px 0 0;color:var(--muted);font-size:12.5px}
.post-ads{display:grid;grid-template-columns:minmax(0,1fr);gap:14px;margin:18px 0 0}
.month{margin:0}
.month-h{font-size:18px;margin:26px 0 14px;color:var(--muted);display:flex;align-items:center;gap:10px}
.month:first-child .month-h{margin-top:4px}
.author-card{display:flex;gap:14px;align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin:22px 0 0;box-shadow:var(--shadow)}
.ac-main{min-width:0;flex:1}
.ac-name{margin:0;font-weight:700;font-size:16px}
.ac-bio{margin:4px 0 0;color:var(--muted);font-size:14px}
.ac-more{margin-left:auto;white-space:nowrap;font-size:14px}
/* 分页条 */
.pager{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;align-items:center;margin:26px 0 4px}
.pager a,.pager .cur,.pager .off{min-width:38px;text-align:center;padding:8px 12px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--muted);font-size:14px}
.pager a:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}
.pager .cur{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.pager .off{opacity:.45}
.empty{color:var(--muted);padding:30px 0;text-align:center}
/* 文章页 */
.article{max-width:calc(var(--content-w) + 264px);margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) 232px;gap:32px;align-items:start}
.article.no-toc{display:block;max-width:var(--content-w)}
.article-main{min-width:0}
.toc-side{position:sticky;top:78px;max-height:calc(100vh - 100px);overflow:auto;min-width:0}
.toc{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.toc-h{margin:0 0 8px;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.toc ul{list-style:none;margin:0;padding:0}
.toc a{display:block;padding:5px 10px;border-left:2px solid var(--border);color:var(--muted);font-size:13.5px;line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toc a:hover{color:var(--primary);text-decoration:none;border-left-color:var(--primary)}
.toc a.on{color:var(--primary);border-left-color:var(--primary);font-weight:600}
.toc li.t3 a{padding-left:24px}
.toc li.t4 a{padding-left:38px}
.content h2,.content h3,.content h4{scroll-margin-top:78px}
.article article h1{font-size:33px;line-height:1.28;margin:14px 0 12px}
.article .meta{margin:6px 0 18px}
.article .cover{margin:0 0 24px}
.article .cover img{width:100%;border-radius:var(--radius);border:1px solid var(--border)}
.content{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px 34px;box-shadow:var(--shadow)}
.content h1,.content h2,.content h3,.content h4{line-height:1.4;margin:30px 0 14px}
.content h2{font-size:24px;padding-bottom:8px;border-bottom:1px solid var(--border)}
.content h3{font-size:19.5px}
.content p{margin:14px 0}
.content a{text-decoration:underline;text-underline-offset:2px}
.content img{max-width:100%;border-radius:10px;border:1px solid var(--border)}
.content ul,.content ol{padding-left:26px;margin:14px 0}
.content li{margin:6px 0}
.content blockquote{border-left:3px solid var(--primary);background:var(--surface-2);margin:18px 0;padding:10px 18px;color:var(--muted);border-radius:0 10px 10px 0}
.content :not(pre)>code{background:var(--surface-2);color:var(--text);padding:2px 7px;border-radius:6px;font-family:var(--font-mono);font-size:.9em;border:1px solid var(--border)}
.content pre{margin:18px 0;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:auto}
.content pre[class*=shiki],.content pre.code-plain{padding:16px 18px;font-family:var(--font-mono);font-size:13.5px;line-height:1.65}
.content pre.code-plain{background:var(--surface-2);color:var(--text)}
.content pre.shiki{background-color:var(--shiki-light-bg,#fff)}
html[data-theme="dark"] .content pre.shiki{background-color:var(--shiki-dark-bg,#0d1117)!important;color:var(--shiki-dark)!important}
html[data-theme="dark"] .content pre.shiki span{color:var(--shiki-dark)!important}
.content table{border-collapse:collapse;width:100%;margin:18px 0;font-size:14.5px}
.content th,.content td{border:1px solid var(--border);padding:9px 13px}
.content th{background:var(--surface-2)}
.content hr{border:0;border-top:1px solid var(--border);margin:26px 0}
/* 作者页 */
.author-hero{display:flex;gap:18px;align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px 26px;margin-bottom:26px;box-shadow:var(--shadow)}
.author-hero .avatar{width:76px;height:76px;font-size:32px}
.author-hero h1{margin:0;font-size:24px}
.bio{color:var(--muted);margin:6px 0 0}
.author-index{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.author-line{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;color:var(--text);display:flex;gap:10px;justify-content:space-between;align-items:center;transition:.15s}
.al-name{flex:1;min-width:0;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.author-line:hover{text-decoration:none;border-color:var(--primary);box-shadow:var(--shadow);transform:translateY(-2px)}
/* 页脚 */
.site-foot{border-top:1px solid var(--border);background:var(--surface);color:var(--muted);font-size:14px;padding:24px 0;margin-top:24px}
@media (max-width:1080px){
.article{grid-template-columns:minmax(0,1fr)}
.toc-side{display:none}
}
@media (max-width:860px){
.home{grid-template-columns:1fr}
.side{position:static}
.content{padding:22px 20px}
.article article h1,.hero h1{font-size:27px}
}
@media (max-width:560px){
.author-card{flex-wrap:wrap}
.ac-more{margin-left:0}
.head-in{height:56px}
.brand{font-size:16px}
}