.blog-main,.article-shell{width:min(1080px,calc(100% - 80px));margin-inline:auto}.blog-intro{display:grid;grid-template-columns:1fr minmax(280px,430px);gap:80px;align-items:end;padding:94px 0 70px}.blog-intro h1{margin:0;font-family:Georgia,"Noto Serif SC","Songti SC",serif;font-size:clamp(50px,7vw,84px);font-weight:500;line-height:1.05;letter-spacing:-.04em}.blog-intro p{margin:0 0 8px;color:var(--ink-soft);font-size:17px;line-height:1.9}.post-list{border-top:1px solid var(--ink)}.post-row{position:relative;display:grid;grid-template-columns:180px minmax(0,1fr) 42px;gap:36px;align-items:center;padding:34px 4px;border-bottom:1px solid var(--line);transition:background .2s,transform .25s cubic-bezier(.22,1,.36,1)}.post-row>a{position:absolute;inset:0;z-index:1}.post-row:hover{background:var(--surface);transform:translateX(5px)}.post-date{display:grid;gap:8px;color:var(--muted);font-size:12px}.post-date span{font-size:11px;letter-spacing:.08em}.post-copy h2{margin:0 0 10px;font-size:26px}.post-copy p{max-width:62ch;margin:0;color:var(--ink-soft);font-size:14px;line-height:1.75}.post-arrow{justify-self:end;color:var(--moss);font-size:26px;transition:transform .25s cubic-bezier(.22,1,.36,1)}.post-row:hover .post-arrow{transform:translateX(5px)}.blog-note{margin:22px 4px 0;color:var(--muted);font-size:11px}.breadcrumb{display:flex;flex-wrap:wrap;gap:10px;padding-top:42px;color:var(--muted);font-size:12px}.breadcrumb a{text-underline-offset:4px}.article-header{max-width:820px;padding:52px 0 50px}.article-header h1{margin:0 0 24px;font-family:Georgia,"Noto Serif SC","Songti SC",serif;font-size:clamp(48px,6vw,76px);font-weight:500;line-height:1.08;letter-spacing:-.04em}.article-header>p{max-width:62ch;margin:0;color:var(--ink-soft);font-size:17px;line-height:1.9}.article-meta{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:26px;color:var(--muted);font-size:11px}.article-meta span+span,.article-meta time+span{position:relative}.article-meta span+span::before,.article-meta time+span::before{content:"";position:absolute;left:-13px;top:50%;width:2px;height:2px;border-radius:50%;background:var(--muted)}.article-layout{display:grid;grid-template-columns:190px minmax(0,720px);gap:70px;align-items:start;border-top:1px solid var(--line);padding-top:42px}.article-toc{position:sticky;top:24px;max-height:calc(100dvh - 48px);overflow:auto;padding-right:12px;scrollbar-width:thin}.article-toc strong{display:block;margin-bottom:16px;font-size:12px}.article-toc ol,.mobile-toc ol{margin:0;padding:0;list-style:none}.article-toc li,.mobile-toc li{margin:0}.article-toc a,.mobile-toc a{display:block;padding:6px 0;color:var(--muted);font-size:12px;line-height:1.5;text-decoration:none}.article-toc a:hover,.mobile-toc a:hover{color:var(--ink)}.article-toc .toc-level-3,.mobile-toc .toc-level-3{padding-left:13px}.article-toc .source-link{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);color:var(--moss)}.mobile-toc{display:none}.article-body{min-width:0;font-family:Georgia,"Noto Serif SC","Songti SC",serif;color:var(--ink-soft);font-size:17px;line-height:2}.article-body> :first-child{margin-top:0}.article-body h2,.article-body h3,.article-body h4{position:relative;color:var(--ink);font-family:Georgia,"Noto Serif SC","Songti SC",serif;scroll-margin-top:30px}.article-body h2{margin:2.8em 0 .9em;padding-bottom:.45em;border-bottom:1px solid var(--line);font-size:30px;font-weight:500}.article-body h3{margin:2.2em 0 .65em;font-size:22px;font-weight:600}.article-body h4{margin:2em 0 .6em;font-size:18px}.heading-anchor{margin-left:10px;color:var(--line);font-size:.72em;font-weight:400;text-decoration:none;opacity:0;transition:opacity .15s,color .15s}.article-body :is(h2,h3,h4):hover .heading-anchor,.heading-anchor:focus-visible{color:var(--moss);opacity:1}.article-body p{margin:1.15em 0}.article-body a{color:var(--moss);text-decoration-thickness:1px;text-underline-offset:4px}.article-body strong{color:var(--ink)}.article-body ul,.article-body ol{margin:1em 0;padding-left:1.45em}.article-body li{padding-left:.3em}.article-body li+li{margin-top:.35em}.article-body blockquote{margin:1.8em 0;padding:1px 24px;border-left:1px solid var(--moss);color:var(--muted)}.article-body code{padding:.12em .35em;border-radius:4px;background:var(--sage);color:var(--ink);font: .86em/1.5 Consolas,"Courier New",monospace}.article-body pre{margin:1.8em 0;max-height:none;border:1px solid var(--line);border-radius:8px;background:var(--surface)}.article-body pre code{padding:0;background:transparent}.article-body img{display:block;max-width:100%;height:auto;margin:2em auto;border-radius:12px}.article-body hr{height:1px;margin:3em 0;border:0;background:var(--line)}.math-inline{white-space:nowrap}.math-block{max-width:100%;margin:1.7em 0;overflow-x:auto;overflow-y:hidden;padding:14px 4px;color:var(--ink);scrollbar-width:thin}.math-block mjx-container[display="true"]{margin:0!important;min-width:max-content;text-align:center}.article-body mjx-container{color:var(--ink)}::selection{background:var(--sage-deep);color:var(--ink)}
@media(max-width:800px){.blog-main,.article-shell{width:calc(100% - 40px)}.blog-intro{grid-template-columns:1fr;gap:28px;padding:64px 0 48px}.post-row{grid-template-columns:145px minmax(0,1fr) 28px;gap:24px}.article-layout{grid-template-columns:160px minmax(0,1fr);gap:35px}}
@media(max-width:580px){.sub-header nav{gap:13px}.sub-header nav a{font-size:12px}.blog-intro{padding-top:48px}.blog-intro h1{font-size:49px}.post-row{grid-template-columns:1fr 24px;gap:12px;padding:27px 2px}.post-row:hover{transform:translateX(3px)}.post-date{grid-column:1/-1;display:flex;gap:12px}.post-copy h2{font-size:23px}.post-copy p{font-size:13px}.article-header{padding:38px 0 35px}.article-header h1{font-size:48px}.article-header>p{font-size:15px}.article-layout{display:block;padding-top:30px}.article-toc{display:none}.mobile-toc{display:block;margin:0 0 28px;padding:14px 16px;border-block:1px solid var(--line);color:var(--ink);font-size:13px}.mobile-toc summary{cursor:pointer;font-weight:600}.mobile-toc[open] summary{margin-bottom:12px}.article-body{font-size:16px;line-height:1.95}.article-body h2{font-size:27px}.article-body h3{font-size:20px}.math-block{margin-inline:-10px;padding-inline:10px}.article-meta{gap:9px 18px}}
@media(prefers-reduced-motion:reduce){.post-row,.post-arrow,.heading-anchor{transition:none}}