:root{--bg:#fff;--text:#111;--muted:#666;--line:#d8d8d8;--line-soft:#ececec;--max:1240px;--serif:"Songti SC","STSong","SimSun","Times New Roman",serif;--sans:"Helvetica Neue","PingFang SC","Microsoft YaHei",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:#fff}body{margin:0;background:#fff;color:#111;font-family:var(--sans);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.article-shell{width:min(calc(100% - 56px),var(--max));margin:0 auto}.article-header{height:72px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(10px)}.article-brand{font:600 22px/1 var(--serif)}.article-nav{display:flex;gap:28px;font-size:13px}.article-nav a{padding:4px 0;border-bottom:1px solid transparent}.article-nav a:hover{border-bottom-color:#111}.article-hero{display:grid;grid-template-columns:90px minmax(0,1fr) 270px;gap:48px;padding:88px 0 72px;border-bottom:1px solid var(--line)}.article-index{font:500 56px/1 var(--serif);color:#111}.article-hero h1{font:500 clamp(48px,5.2vw,78px)/1.08 var(--serif);letter-spacing:-.035em;margin:0 0 22px;max-width:900px}.article-dek{font:400 19px/1.8 var(--serif);color:#333;max-width:760px;margin:0}.article-meta{margin:0;border-top:1px solid #111}.article-meta div{padding:13px 0;border-bottom:1px solid var(--line-soft)}.article-meta dt{font:600 9px/1.2 var(--sans);letter-spacing:.11em;color:#777;text-transform:uppercase;margin-bottom:5px}.article-meta dd{margin:0;font:400 13px/1.5 var(--serif)}.article-layout{display:grid;grid-template-columns:90px minmax(0,760px) 1fr;gap:48px;padding:76px 0 100px}.article-toc{font-size:10px;letter-spacing:.08em;color:#777;position:sticky;top:104px;height:max-content}.article-body{font:400 17px/1.95 var(--serif);color:#242424}.article-body p{margin:0 0 22px}.article-body h2{font:500 34px/1.35 var(--serif);margin:64px 0 22px}.article-body h3{font:500 24px/1.45 var(--serif);margin:46px 0 18px}.article-body strong{font-weight:600;color:#111}.article-body blockquote{margin:42px 0;padding:22px 0;border-top:1px solid #111;border-bottom:1px solid var(--line);font:500 24px/1.55 var(--serif)}.article-body ul,.article-body ol{padding-left:1.4em;margin:18px 0 28px}.article-body li{margin:8px 0}.article-body img{width:100%;height:auto;margin:36px 0;border:1px solid var(--line);background:#f5f5f5}.article-body code{font:500 12px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;background:#f4f4f4;padding:2px 5px}.article-side{align-self:start;border-top:1px solid #111;padding-top:16px;position:sticky;top:104px}.article-side p{font:400 12px/1.75 var(--serif);color:#666;margin:0 0 16px}.article-side a{font-size:12px;border-bottom:1px solid #111}.source-shot{margin:0 auto 36px;border:1px solid var(--line);background:#151515;padding:0;max-width:800px}.source-shot img{width:100%;height:auto}.source-shot--narrow{max-width:620px}.source-note{font:400 12px/1.7 var(--serif);color:#777;border-top:1px solid var(--line);padding-top:14px;margin-top:18px}.article-footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:24px;padding:28px 0 48px;font-size:12px}.article-footer a{border-bottom:1px solid transparent}.article-footer a:hover{border-bottom-color:#111}.quote-stack{border-top:1px solid #111;margin-top:28px}.quote-stack blockquote{font:500 25px/1.55 var(--serif);margin:0;padding:24px 0;border-bottom:1px solid var(--line)}.archive-hero{padding:88px 0 58px;border-bottom:1px solid var(--line)}.archive-hero h1{font:500 clamp(54px,7vw,96px)/1 var(--serif);letter-spacing:-.04em;margin:0 0 24px}.archive-hero p{font:400 17px/1.8 var(--serif);color:#444;max-width:650px}.archive-list article{display:grid;grid-template-columns:90px 1fr 150px;gap:30px;padding:34px 0;border-bottom:1px solid var(--line)}.archive-list .num{font:500 28px/1 var(--serif)}.archive-list h2{font:500 27px/1.35 var(--serif);margin:0 0 9px}.archive-list p{font:400 13px/1.7 var(--serif);color:#666;margin:0}.archive-list time{font-size:11px;color:#777;text-align:right}.archive-list a:hover h2{text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px}
@media(max-width:900px){.article-shell{width:min(calc(100% - 32px),var(--max))}.article-hero{grid-template-columns:46px 1fr;gap:26px}.article-index{font-size:40px}.article-meta{grid-column:2}.article-layout{grid-template-columns:46px 1fr;gap:26px}.article-side{grid-column:2;position:static;border-top:1px solid var(--line);margin-top:24px}.article-toc{position:static}.archive-list article{grid-template-columns:54px 1fr}.archive-list time{grid-column:2;text-align:left}}
@media(max-width:560px){.article-shell{width:calc(100% - 24px)}.article-header{height:64px}.article-nav{gap:14px;font-size:11px}.article-nav a:nth-child(2){display:none}.article-hero{grid-template-columns:1fr;padding:54px 0 48px}.article-index{display:none}.article-meta{grid-column:1;display:grid;grid-template-columns:1fr 1fr}.article-meta div{padding-right:10px}.article-hero h1{font-size:44px}.article-dek{font-size:17px}.article-layout{grid-template-columns:1fr;padding:52px 0 74px}.article-toc{display:none}.article-body{font-size:16px;line-height:1.9}.article-body h2{font-size:29px;margin-top:52px}.article-body blockquote,.quote-stack blockquote{font-size:21px}.article-side{grid-column:1}.archive-hero{padding:56px 0 42px}.archive-list article{grid-template-columns:42px 1fr;gap:14px}.archive-list h2{font-size:23px}}

/* Mobile navigation and reading ergonomics. */
.article-menu-btn{display:none;background:none;border:0;color:#111}
.article-nav-backdrop{display:none}
@media(max-width:560px){
  .article-header{position:sticky;top:0;z-index:70}
  .article-menu-btn{display:block;min-width:52px;min-height:44px;margin-right:-8px;font:500 12px/1 var(--sans)}
  .article-nav{display:none}
  .article-nav.is-open{display:flex;position:fixed;top:0;right:0;bottom:0;width:min(82vw,350px);height:100dvh;z-index:82;flex-direction:column;gap:4px;background:#fff;border-left:1px solid var(--line);padding:max(88px,calc(env(safe-area-inset-top) + 74px)) 26px max(32px,env(safe-area-inset-bottom));box-shadow:-12px 0 40px rgba(0,0,0,.08);font-size:18px}
  .article-nav.is-open a{display:flex!important;align-items:center!important;min-height:52px;padding:8px 0;border-bottom:1px solid var(--line-soft)}
  .article-nav.is-open a[aria-current="page"]{font-weight:700}
  .article-nav-backdrop.is-open{display:block;position:fixed;inset:0;z-index:80;border:0;background:rgba(0,0,0,.22)}
  .mobile-context-back--writing{top:64px;margin-bottom:0}
  .article-hero{padding-top:38px}
  .article-body a,.article-side a,.article-footer a{min-height:44px;display:inline-flex;align-items:center}
  .article-body img,.source-shot img{cursor:zoom-in}
}