*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.55 var(--sans);text-wrap:pretty;-webkit-font-smoothing:antialiased}h1,h2,h3{text-wrap:balance;line-height:1.2}a{color:inherit;text-underline-offset:3px}code,pre,kbd{font-family:var(--mono);font-size:.9em}button,input,select,textarea{font:inherit;color:inherit}[hidden]{display:none!important}:is(h1,h2,h3)[id]{scroll-margin-top:72px}button,a,summary{touch-action:manipulation;-webkit-tap-highlight-color:color-mix(in srgb,var(--accent) 12%,transparent)}.toolbar,.pv-bar .chips{scrollbar-width:none}.toolbar::-webkit-scrollbar,.pv-bar .chips::-webkit-scrollbar{display:none}@property --fade-top{syntax: "<length>"; inherits: false; initial-value: 0px;}@property --fade-bot{syntax: "<length>"; inherits: false; initial-value: 0px;}@keyframes fade-y{0%{--fade-top: 0px;--fade-bot: var(--fade-end, var(--fade, 20px))}8%{--fade-top: var(--fade, 20px)}92%{--fade-bot: var(--fade-end, var(--fade, 20px))}to{--fade-top: var(--fade, 20px);--fade-bot: 0px}}select{appearance:none;height:36px;padding:0 32px 0 12px;border-radius:calc(var(--radius) - 2px);border:1px solid var(--line);background:var(--bg) var(--chevron) no-repeat right 10px center / 16px;box-shadow:var(--shadow-xs);font-size:14px;cursor:pointer}textarea,input[type=text],input[type=search],input[type=email],input[type=number],input[type=url],input:not([type]){border:1px solid var(--line);border-radius:calc(var(--radius) - 2px);background:transparent;padding:8px 12px;font-size:14px;box-shadow:var(--shadow-xs)}input[type=text],input[type=search],input[type=email],input[type=number],input[type=url],input:not([type]){height:36px}::placeholder{color:var(--muted)}input[type=range],input[type=checkbox],input[type=radio]{accent-color:var(--accent)}.wrap{max-width:1100px;margin-inline:auto;padding-inline:16px}.toolbar{position:sticky;top:0;z-index:20;display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;padding-block:10px;margin-block:14px 8px;background:color-mix(in srgb,var(--bg) 90%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}.toolbar .spacer{flex:1}.pill{display:inline-flex;align-items:center;gap:6px;padding:2px 9px;border-radius:99px;background:var(--sunken);font-size:12px}.pill[data-on=true]{background:var(--accent-soft);color:var(--accent)}.why{border-left:3px solid var(--accent);background:var(--card);padding:12px 16px;border-radius:0 10px 10px 0;margin:14px 0;max-width:78ch}.why strong:first-child{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);margin-bottom:2px}.why p{margin:0}.compare{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}.pane{background:var(--card);border:1px solid var(--line);border-radius:calc(var(--radius) + 4px);box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;min-width:0}.tag{font-size:11px;font-weight:600;padding:1px 8px;border-radius:99px;text-transform:uppercase;letter-spacing:.04em}.pane[data-kind=bad] .tag{background:var(--bad-soft);color:var(--bad)}.pane[data-kind=good] .tag{background:var(--good-soft);color:var(--good)}.pane[data-kind=neutral] .tag{background:var(--sunken);color:var(--muted)}.stage{position:relative;min-height:220px;padding:20px;display:grid;place-items:center;overflow:hidden;background-color:var(--sunken);background-image:radial-gradient(color-mix(in srgb,var(--muted) 22%,transparent) 1px,transparent 1px);background-size:16px 16px}pre.code{margin:12px 0 0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;overflow-x:auto;font-size:13px;line-height:1.5}pre.code code{white-space:pre;font-size:inherit}.rules{margin:10px 0 0;padding-left:18px;display:grid;gap:4px;max-width:72ch}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:36px;padding:0 16px;border-radius:calc(var(--radius) - 2px);border:1px solid transparent;background:var(--accent);color:var(--accent-ink);font-size:14px;font-weight:500;cursor:pointer;box-shadow:var(--shadow-xs);white-space:nowrap;transition:transform .16s var(--ease-out),background-color .15s ease,border-color .15s ease;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}.btn:active{transform:scale(.97)}.btn.secondary{background:var(--bg);color:var(--ink);border-color:var(--line)}.btn.small{height:32px;padding:0 12px;font-size:13px}@media(hover:hover)and (pointer:fine){.btn:hover{background:color-mix(in srgb,var(--accent) 90%,var(--bg))}.btn.secondary:hover{background:var(--accent-soft)}}.btn:disabled{opacity:.5;cursor:not-allowed}.check{display:inline-flex;align-items:center;gap:6px;cursor:pointer;font-size:13px}.check input{accent-color:var(--accent);width:15px;height:15px}.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(min(100%,230px),1fr))}@media(prefers-reduced-motion:reduce){.btn{transition:background-color .15s ease,border-color .15s ease}.btn:active{transform:none}}.brand-vercel{--brand: url(/lab/shared/logos/vercel.svg)}.brand-linear{--brand: url(/lab/shared/logos/linear.svg)}.brand-shopify{--brand: url(/lab/shared/logos/shopify.svg)}.brand-vercel:before{width:50%;height:50%;transform:translateY(-4%)}input[type=range]{-webkit-appearance:none;appearance:none;height:16px;background:transparent;cursor:pointer;--fill: 50%}input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:99px;background:linear-gradient(to right,var(--accent) var(--fill),var(--sunken) var(--fill))}input[type=range]::-moz-range-track{height:6px;border-radius:99px;background:var(--sunken)}input[type=range]::-moz-range-progress{height:6px;border-radius:99px;background:var(--accent)}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;margin-top:-5px;border-radius:50%;background:var(--bg);border:1px solid var(--accent);box-shadow:var(--shadow-sm);transition:transform .15s var(--ease-out),box-shadow .15s ease}input[type=range]::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--bg);border:1px solid var(--accent);box-shadow:var(--shadow-sm)}input[type=range]:active::-webkit-slider-thumb{transform:scale(1.1)}input[type=range]:focus-visible{box-shadow:none}input[type=range]:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 4px color-mix(in srgb,var(--ring) 50%,transparent)}input[type=range]:focus-visible::-moz-range-thumb{box-shadow:0 0 0 4px color-mix(in srgb,var(--ring) 50%,transparent)}@media(hover:hover)and (pointer:fine){input[type=range]:hover::-webkit-slider-thumb{box-shadow:0 0 0 4px color-mix(in srgb,var(--ring) 30%,transparent)}}input[type=checkbox]{-webkit-appearance:none;appearance:none;width:16px;height:16px;margin:0;flex:none;border:1px solid var(--line);border-radius:4px;background:var(--bg) center / 12px no-repeat;box-shadow:var(--shadow-xs);cursor:pointer;display:inline-grid;place-content:center;transition:background-color .12s ease,border-color .12s ease,background-size .16s var(--ease-out),transform .16s var(--ease-out)}input[type=checkbox]:not(:checked){background-size:6px}input[type=checkbox]:active{transform:scale(.92)}input[type=checkbox]:checked{background-color:var(--accent);border-color:var(--accent);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fafafa' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E")}:root input[type=checkbox]:checked{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23171717' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E")}:root[data-theme=dark] input[type=checkbox]:checked{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23171717' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E")}textarea:focus-visible,input:focus-visible,select:focus-visible{border-color:var(--ring)}textarea,input[type=text],input[type=search]{transition:border-color .15s ease,box-shadow .15s ease}kbd{font:11px/1 var(--mono);padding:3px 5px;border-radius:4px;border:1px solid var(--line);background:var(--sunken);color:var(--muted)}.tags{display:flex;flex-wrap:wrap;gap:4px}.chips{display:flex;flex-wrap:wrap;gap:6px}.chip{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 10px;border-radius:999px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font-size:13px;cursor:pointer;transition:background-color .12s ease,color .12s ease,border-color .12s ease,transform .16s var(--ease-out)}.chip span{color:var(--muted);font-size:11px;font-variant-numeric:tabular-nums}.chip:active{transform:scale(.96)}.chip[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.chip[aria-pressed=true] span{color:inherit;opacity:.7}@media(hover:hover)and (pointer:fine){.chip:not([aria-pressed=true]):hover{border-color:var(--muted)}}.hub-search{display:flex;align-items:center;gap:10px;width:min(560px,100%);height:44px;margin-top:18px;padding:0 10px 0 14px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow-sm);color:var(--muted);font-size:14px;cursor:pointer;transition:transform .16s var(--ease-out),border-color .15s ease}.hub-search span{flex:1;text-align:left}.hub-search:active{transform:scale(.99)}@media(hover:hover)and (pointer:fine){.hub-search:hover{border-color:var(--muted)}}.pv-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin:18px 0 16px}.pv-bar .chips{flex:1 1 420px}.pv-count{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.pv-card{position:relative;display:flex;flex-direction:column;overflow:hidden;min-width:0;background:var(--card);border:1px solid var(--line);border-radius:calc(var(--radius) + 4px);box-shadow:var(--shadow-sm);transition:transform .16s var(--ease-out),border-color .15s ease}.pv-card:active{transform:scale(.99)}.pv-frame{position:relative;aspect-ratio:16 / 10;overflow:hidden;border-bottom:1px solid var(--line);background:var(--sunken) radial-gradient(color-mix(in srgb,var(--muted) 22%,transparent) .75px,transparent .75px) 0 0 / 12px 12px}.pv-frame iframe{position:absolute;inset:0;width:calc(100% / .75);height:calc(100% / .75);border:0;transform:scale(.75);transform-origin:0 0;pointer-events:none;opacity:0;transition:opacity .26s var(--ease-out)}.pv-frame.is-ready iframe{opacity:1}.pv-body{display:grid;gap:6px;padding:12px 14px 14px}.pv-body .n{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}.pv-body :is(h2,h3){margin:0;font-size:14px;font-weight:600;line-height:1.3}.pv-link{text-decoration:none}.pv-link:after{content:"";position:absolute;inset:0;z-index:1}.pv-link:focus-visible{box-shadow:none}.pv-card:has(.pv-link:focus-visible){border-color:var(--ring);box-shadow:0 0 0 3px color-mix(in srgb,var(--ring) 50%,transparent)}@media(hover:hover)and (pointer:fine){.pv-card:hover{border-color:var(--muted)}}@media(prefers-reduced-motion:reduce){.pv-frame iframe{transition:none}}@media(max-width:640px){.chip,.btn.small{min-height:44px}.toolbar{flex-wrap:nowrap;overflow-x:auto;overscroll-behavior-x:contain;margin-inline:-16px;padding-inline:16px;gap:8px 12px;white-space:nowrap}.toolbar>*{flex:none}.toolbar .pill{display:none}.pv-bar .chips{display:flex;flex-wrap:nowrap;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;margin-inline:-16px;padding-inline:16px;scroll-padding-inline:16px;gap:10px}.pv-bar .chips>*{flex:none;scroll-snap-align:start}.pv-bar .chips{scroll-snap-type:x proximity;gap:6px}.toolbar,.pv-bar .chips{-webkit-mask-image:linear-gradient(to right,transparent,#000 var(--fade-top),#000 calc(100% - var(--fade-bot)),transparent);mask-image:linear-gradient(to right,transparent,#000 var(--fade-top),#000 calc(100% - var(--fade-bot)),transparent);animation:fade-y linear both;animation-timeline:scroll(self inline);--fade: 32px}.pv-bar{gap:10px}.pv-bar .chips{flex:1 1 100%}}@media(prefers-reduced-transparency:reduce){.toolbar{background:var(--bg);-webkit-backdrop-filter:none;backdrop-filter:none}}@media(hover:none){.hub-search kbd{display:none}}
::selection{background:#e8372a52;color:var(--ink)}:focus-visible{outline:2px solid var(--ink);outline-offset:3px;box-shadow:none}body{-moz-osx-font-smoothing:grayscale;font-synthesis:none}.skip{position:absolute;left:12px;top:-60px;z-index:50;padding:10px 14px;background:var(--ink);color:var(--bg)}.skip:focus{top:12px}body>.nav a,body>.foot a{text-decoration:none}body>.nav button,body>.foot button{background:none;border:0;padding:0;cursor:pointer}body>.nav,body>.foot{font-size:16px;line-height:1.5}.foot p,.foot nav{margin:0}.lab{position:relative;isolation:isolate;width:min(100% - var(--gutter) * 2,var(--shell));margin-inline:auto;display:grid;grid-template-columns:220px minmax(0,1fr);gap:48px;align-items:start;padding:40px 20px 120px}.lab-body{min-width:0}.lab .wrap{max-width:none;padding-inline:0}.lab.solo{grid-template-columns:minmax(0,1fr)}.crumbs{display:flex;flex-wrap:wrap;gap:6px;padding:0;font-size:13px;color:var(--muted)}.crumbs a{text-decoration:none;transition:color .15s ease}@media(hover:hover)and (pointer:fine){.crumbs a:hover{color:var(--ink);text-decoration:none}}.page-head{padding:24px 0 0}.lab.solo .page-head{padding-top:0}.page-head h1{margin:0;font-size:clamp(36px,4vw,52px);font-weight:640;font-stretch:84%;line-height:1;letter-spacing:-.035em;text-wrap:balance}.lede{margin:18px 0 0;max-width:56ch;color:var(--muted);font-size:17px;line-height:1.5}.col-src{margin:14px 0 0;font-size:14px;color:var(--muted)}.col-src a{color:var(--ink-2);text-decoration:underline;text-decoration-color:var(--line-2);text-underline-offset:3px}.source-note,.tweet-foot{font-size:13px;color:var(--muted)}.source-note{margin:12px 0 0}.col-src{margin-top:20px;font-size:13.5px;line-height:1.9}.col-src code{white-space:nowrap;padding:2px 6px;border:1px solid var(--line-2);border-radius:5px;background:var(--surface);color:var(--ink-2);font-size:12.5px}.col-src a{text-decoration:none}.pv-bar{margin:28px 0 20px;gap:12px 16px}.chip{height:30px;padding:0 10px;border:1px solid var(--line-2);border-radius:6px;background:transparent;color:var(--muted);font:12px/1 var(--pixel);text-transform:uppercase;transition:color .15s ease,border-color .15s ease,background-color .15s ease,scale .15s var(--ease-out)}.chip span{color:var(--faint);font:inherit}.chip:active{scale:.96;transform:none}.chip[aria-pressed=true]{border-color:var(--red);background:#e8372a1f;color:var(--ink)}.chip[aria-pressed=true] span{color:var(--accent-text);opacity:1}.pv-count{margin-left:auto;font:12px/1 var(--pixel);text-transform:uppercase;color:var(--faint)}@media(hover:hover)and (pointer:fine){.chip:not([aria-pressed=true]):hover{color:var(--ink);border-color:var(--muted)}}.crumbs span{color:var(--ink-2)}.hub-search{height:40px;margin:0;border-color:var(--line-2);border-radius:8px;background:var(--surface);transition:border-color .15s ease,scale .15s var(--ease-out)}.hub-search:active{scale:.985;transform:none}@media(hover:hover)and (pointer:fine){.hub-search:hover{border-color:var(--muted)}}.section{margin-top:48px;padding-top:40px;border-top:1px solid var(--line-2)}.section>h2{margin:0 0 6px;font-size:24px;font-weight:620;font-stretch:90%;letter-spacing:-.02em}.section>p{max-width:66ch;margin:0 0 16px;color:var(--ink-2);font-size:16px;line-height:1.65}.toolbar{top:60px;margin:24px 0 0;padding-block:12px;background:#0b0b0ad1;-webkit-backdrop-filter:blur(10px) saturate(1.2);backdrop-filter:blur(10px) saturate(1.2);border-bottom-color:var(--line-2);font-size:13px}.section{position:relative}.section:before,.section:after{content:"";position:absolute;top:-6px;width:11px;height:11px;pointer-events:none;background:linear-gradient(#46453f,#46453f) 5px 0 / 1px 11px no-repeat,linear-gradient(#46453f,#46453f) 0 5px / 11px 1px no-repeat}.section:before{left:-5px}.section:after{right:-5px}html[data-embed] .section:before,html[data-embed] .section:after{display:none}.lab:before{content:"";position:absolute;left:0;right:0;top:0;height:320px;z-index:-1;pointer-events:none;opacity:.32;background:url(/assets/trails.4b0fd8e63b.svg) 85% 40% / cover no-repeat;-webkit-mask-image:linear-gradient(90deg,transparent 20%,#000),linear-gradient(#000,transparent);-webkit-mask-composite:source-in;mask-image:linear-gradient(90deg,transparent 20%,#000),linear-gradient(#000,transparent);mask-composite:intersect}html[data-embed] .lab:before{display:none}.sources{margin-top:32px}.tweet,.verdict-grid>div,.why,.pv-card,.card-link,.pane,pre.code,.table{border:1px solid var(--line-2);border-radius:10px;background:var(--surface);box-shadow:none}.tweet{padding:16px;gap:10px}.tweet blockquote{font-size:14.5px;line-height:1.55;color:var(--ink-2)}.tweet-foot a,.tweet-head .who span{color:var(--muted)}.tweet-foot a{text-decoration:underline;text-decoration-color:var(--line-2);text-underline-offset:3px}.why{border-left:1px solid var(--line-2);padding:14px 16px}.pane-head,.pane-foot{border-color:var(--line-2)}.verdict-grid>div{padding:16px}.verdict-grid h3,.why strong:first-child,.rail-label,.library-kicker,.aside-label,.essay-kicker,.essay-meta,.tag,kbd{font:12px/1.4 var(--pixel);text-transform:uppercase;letter-spacing:0;color:var(--faint)}.verdict-grid .pros h3{color:var(--ok)}.verdict-grid .cons h3{color:var(--err)}.tag{padding:2px 8px;border-radius:999px}kbd{text-transform:none;padding:3px 5px;border:1px solid var(--line-2);border-radius:4px;background:transparent}pre.code{padding:14px 16px;font-size:13.5px;line-height:1.75;color:var(--ink-2);scrollbar-width:thin;scrollbar-color:#2b2a27 transparent}.pv-grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,260px),1fr))}.pv-card{transition:border-color .15s ease,scale .15s var(--ease-out)}.pv-card:active{scale:.985;transform:none}.pv-frame{border-bottom-color:var(--line-2);background-color:var(--surface-2)}.pv-frame iframe{width:calc(100% / var(--s, .75));height:calc(100% / var(--s, .75));transform:scale(var(--s, .75))}.pv-body{gap:6px;padding:14px 16px 16px}.pv-body .n{font:12px/1.4 var(--pixel);text-transform:uppercase;color:var(--accent-text)}.pv-body :is(h2,h3){font-size:15px;font-weight:560;line-height:1.3;text-wrap:balance}.pv-link:focus-visible{outline:0}.pv-card:has(.pv-link:focus-visible){border-color:var(--ink-2);box-shadow:none;outline:2px solid var(--ink);outline-offset:3px}@media(hover:hover)and (pointer:fine){.pv-card:hover{border-color:color-mix(in srgb,var(--red) 60%,var(--line-2))}}.hub-card{--s: .6}.hub-card .pv-frame{aspect-ratio:2 / 1}.hub-card .pv-body{flex:1;grid-template-rows:auto 1fr auto;gap:8px}.hub-card .pv-body p{margin:0;color:var(--muted);font-size:14px;line-height:1.5;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;line-clamp:3;overflow:hidden}.hub-card .pv-body .n{align-self:end;margin-top:4px;color:var(--faint)}.pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:56px;padding-top:24px;border-top:1px solid var(--line-2)}.pager a{padding:12px 14px;border:1px solid var(--line-2);border-radius:10px;color:var(--ink-2);font-size:14.5px;text-decoration:none;transition:border-color .15s ease,color .15s ease,scale .15s var(--ease-out)}.pager a[rel=next]{grid-column:2;text-align:right}.pager a:active{scale:.985}@media(hover:hover)and (pointer:fine){.pager a:hover{border-color:var(--muted);color:var(--ink)}}@media(max-width:640px){.pager{grid-template-columns:minmax(0,1fr)}.pager a[rel=next]{grid-column:auto}}@media(prefers-reduced-motion:reduce){.chip,.hub-search,.pv-card{transition:none}.chip:active,.hub-search:active{scale:none}.lab-toc,.toc-scrim{transition:none}.toc-open:active,.pager a:active,.pv-card:active{scale:none}}html[data-embed] :is(.rails,.skip,body>.nav,body>.foot,.lab-toc,.lab-bar,.toc-scrim){display:none}html[data-embed] .lab{display:block;padding:0}
.home{--paper-line: color-mix(in srgb, var(--line) 72%, transparent)}.essay-head{max-width:920px;padding:34px 0 48px;border-bottom:1px solid var(--line)}.essay-kicker,.essay-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;color:var(--muted);font:12px/1.4 var(--pixel);text-transform:uppercase}.essay-kicker span:first-child{display:inline-flex;align-items:center;gap:8px;color:var(--ink)}.essay-kicker span:first-child:before{content:"";width:5px;height:5px;background:var(--red)}.essay-head h1{margin:18px 0 16px;font-size:clamp(40px,5vw,64px);text-wrap:balance;font-weight:640;font-stretch:84%;line-height:.98;letter-spacing:-.035em}.essay-deck{max-width:760px;margin:0;font-size:clamp(19px,2.25vw,26px);line-height:1.38;letter-spacing:-.025em;color:color-mix(in srgb,var(--ink) 80%,var(--muted))}.essay-meta{margin-top:24px;gap:10px 22px;text-transform:none;color:var(--faint)}.essay-layout{display:grid;grid-template-columns:196px minmax(0,680px);gap:clamp(40px,7vw,92px);align-items:start;padding:64px 0 90px}.essay-rail{position:sticky;top:88px}.rail-label,.library-kicker,.aside-label{margin:0;font:11px/1.4 var(--mono);color:var(--muted);text-transform:uppercase;letter-spacing:.09em}.essay-rail nav{position:relative;display:grid;gap:1px;margin:12px 0 24px;border-left:1px solid var(--line)}.essay-rail nav a{padding:7px 0 7px 12px;color:var(--muted);font-size:12.5px;line-height:1.35;text-decoration:none;transition:color .14s ease}.essay-rail nav a[aria-current=true]{color:var(--ink)}.rail-ind{position:absolute;top:0;left:-1px;width:2px;height:32px;border-radius:2px;background:var(--red);opacity:0;transition:transform .25s var(--ease-in-out),height .25s var(--ease-in-out),opacity .14s ease;pointer-events:none}.rail-ind.is-on{opacity:1}@media(hover:hover)and (pointer:fine){.essay-rail nav a:hover{color:var(--ink)}.draft-button:hover{background-color:var(--sunken)}.draft-button.primary:hover{background-color:color-mix(in srgb,var(--red) 88%,#fff)}}.draft-actions{display:grid;gap:7px}.draft-button{height:34px;padding:0 11px;border:1px solid var(--line);border-radius:calc(var(--radius) - 2px);background:var(--bg);color:var(--ink);font-size:12.5px;text-align:left;cursor:pointer;transition:background-color .14s ease,transform .16s var(--ease-out)}.draft-button.primary{background:var(--red);border-color:var(--red);color:#1a0d06}.draft-button:active{transform:scale(.98)}.rail-note{margin:12px 0 0;color:var(--muted);font-size:11.5px;line-height:1.45}.essay{min-width:0;font-size:18px;line-height:1.72;letter-spacing:-.008em;color:color-mix(in srgb,var(--ink) 80%,var(--muted))}.essay :is(h2,strong){color:var(--ink)}.essay p{margin:0 0 1.55em}.essay-opening{font-size:23px;line-height:1.55;letter-spacing:-.025em}.essay h2{scroll-margin-top:88px;margin:3.4em 0 .8em;font-size:27px;line-height:1.2;letter-spacing:-.035em}.essay>h2:first-child{margin-top:0}.essay h2 span{display:block;margin-bottom:8px;color:var(--muted);font:11px/1 var(--mono);letter-spacing:.04em}.essay ul{margin:0 0 1.55em;padding-left:1.15em}.essay li{margin:0 0 .45em;padding-left:.2em}.essay blockquote.pull{margin:2.6em 0;padding:.2em 0 .2em 1.2em;border-left:2px solid var(--red);color:var(--ink);font-size:26px;line-height:1.35;letter-spacing:-.035em}.pull p{margin:0 0 .7em}.pull footer{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:13px;letter-spacing:0}.essay blockquote:not(.pull){position:relative;margin:2.4em 0;padding:1.25em 0 1.25em 1.3em;border-left:2px solid var(--red);font-size:26px;line-height:1.35;letter-spacing:-.035em}.essay-aside{margin:2.4em 0;padding:18px 20px 1px;border:1px solid var(--line);border-radius:var(--radius);background:var(--sunken)}.essay-aside p:not(.aside-label){margin-top:8px;font-size:16px;line-height:1.55}.essay-ending{padding-top:1.5em;border-top:1px solid var(--line);font-size:21px;line-height:1.55;letter-spacing:-.02em}.essay[contenteditable=true]{margin:-24px;padding:24px;border-radius:calc(var(--radius) + 4px);background:var(--card);box-shadow:0 0 0 1px var(--line),var(--shadow-sm);caret-color:var(--ink)}.essay[contenteditable=true] :is(p,h2,li,blockquote):hover{background:color-mix(in srgb,var(--accent-soft) 62%,transparent)}.essay[contenteditable=true]:focus{outline:none;box-shadow:0 0 0 1px var(--ring),0 0 0 4px color-mix(in srgb,var(--ring) 18%,transparent)}.library{position:relative;padding:88px 0 0;border-top:1px solid var(--line-2)}.library:before,.library:after{content:"";position:absolute;top:-6px;width:11px;height:11px;pointer-events:none;background:linear-gradient(#46453f,#46453f) 5px 0 / 1px 11px no-repeat,linear-gradient(#46453f,#46453f) 0 5px / 11px 1px no-repeat}.library:before{left:-5px}.library:after{right:-5px}.library .grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,236px),1fr))}.library-head{display:flex;align-items:end;justify-content:space-between;gap:28px}.library-head h2{margin:7px 0 4px;font-size:clamp(30px,3.4vw,40px);font-weight:620;font-stretch:86%;line-height:1.05;letter-spacing:-.03em}.library-head p:not(.library-kicker){max-width:620px;margin:0;color:var(--muted);font-size:15px}.library .hub-search{flex:0 1 370px;margin:0}.library .section{margin-top:56px;padding-top:40px}.library .section>h2{margin-bottom:20px}@media(max-width:760px){.essay-head{padding-top:18px}.essay-head h1{font-size:clamp(45px,15vw,68px)}.essay-layout{grid-template-columns:1fr;gap:38px;padding-top:38px}.essay-rail{position:static;display:grid;grid-template-columns:1fr 1fr;gap:14px 18px;padding-bottom:30px;border-bottom:1px solid var(--line)}.essay-rail .rail-label,.essay-rail nav{grid-column:1 / -1}.essay-rail nav{grid-template-columns:1fr 1fr;margin:0}.rail-note{margin:0}.essay{font-size:17px}.essay-opening{font-size:20px}.essay blockquote{font-size:22px}.library-head{align-items:stretch;flex-direction:column}.library .hub-search{flex-basis:auto;width:100%}}@media(max-width:480px){.essay-rail{grid-template-columns:1fr}.essay-rail nav{grid-template-columns:1fr}.essay-rail .rail-label,.essay-rail nav{grid-column:auto}.essay[contenteditable=true]{margin-inline:-8px;padding-inline:8px}}@media(prefers-reduced-motion:reduce){.essay-rail nav a,.draft-button{transition:none}}.rq{cursor:pointer;border-radius:5px;-webkit-box-decoration-break:clone;box-decoration-break:clone;transition:background-color .14s ease}.face{display:inline-block;flex:none;border-radius:50%;object-fit:cover;box-shadow:0 0 0 1px var(--line)}.face-mono{display:inline-grid;place-items:center;background:var(--sunken);color:var(--ink);font-family:var(--mono);font-weight:600;letter-spacing:-.02em}.rq .face{width:1.1em;height:1.1em;margin:0 .3em 0 .05em;vertical-align:-.2em}.rq .face-mono{font-size:.45em;width:2.45em;height:2.45em;vertical-align:.1em}.pc-by .face{width:36px;height:36px}.pc-by .face-mono{display:grid;place-items:center;color:var(--ink);font-size:12px}.pull footer .face{width:24px;height:24px}.rq-t{color:var(--ink);text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--ink) 22%,transparent);text-decoration-thickness:1px;text-underline-offset:4px;transition:text-decoration-color .14s ease}.rq[aria-expanded=true]{background:var(--accent-soft)}.rq[aria-expanded=true] .rq-t{text-decoration-color:var(--ink)}.rq:focus-visible{box-shadow:0 0 0 2px color-mix(in srgb,var(--ring) 60%,transparent)}.fx,.pl{position:relative;display:inline-flex;align-items:center;gap:5px;height:1.6em;padding:0 .55em;border:1px solid var(--line);border-radius:99px;background:var(--card);color:var(--ink);font-size:.8em;font-weight:500;line-height:1;white-space:nowrap;vertical-align:.1em;font-variant-numeric:tabular-nums;text-decoration:none;cursor:pointer;transition:transform .16s var(--ease-out),border-color .14s ease,background-color .14s ease}.pl{background:var(--sunken);border-color:transparent}.fx .ic,.pl .ic{width:1.05em;height:1.05em;flex:none;color:var(--muted);transition:color .14s ease}.fx:active,.pl:active{transform:scale(.97)}.fx[aria-expanded=true],.pl[aria-expanded=true]{border-color:var(--ink)}.fx[aria-expanded=true] .ic,.pl[aria-expanded=true] .ic{color:var(--ink)}@media(hover:hover)and (pointer:fine){.rq:hover{background:var(--accent-soft)}.rq:hover .rq-t{text-decoration-color:var(--ink)}.fx:hover,.pl:hover{border-color:var(--muted)}.fx:hover .ic,.pl:hover .ic{color:var(--ink)}}@media(pointer:coarse){.fx:after,.pl:after{content:"";position:absolute;inset:-6px -3px}}.pop{position:fixed;top:0;left:0;z-index:60;width:min(380px,calc(100vw - 32px));max-height:calc(100dvh - 32px);overflow:auto;padding:16px;border:1px solid var(--line);border-radius:calc(var(--radius) + 4px);background:var(--card);color:var(--ink);box-shadow:var(--shadow);font-size:14px;line-height:1.55;letter-spacing:0;opacity:0;transform:scale(.96);transform-origin:var(--origin, 50% 0);pointer-events:none;transition:opacity .12s var(--ease-out),transform .12s var(--ease-out)}.pop[data-state=open]{opacity:1;transform:none;pointer-events:auto;transition-duration:.18s}.pop[data-instant]{transition:none}.pop:focus-visible{box-shadow:var(--shadow),0 0 0 3px color-mix(in srgb,var(--ring) 50%,transparent)}.pc>:last-child{margin-bottom:0}.pc p{margin:0}.pc-by{display:grid;grid-template-columns:36px 1fr;align-items:center;gap:12px}.pc-by strong{display:block;font-size:14px;font-weight:600;line-height:1.3}.pc-by span{display:block;color:var(--muted);font-size:12.5px;line-height:1.35}.pc-passage{margin-top:14px!important;color:var(--muted);font-size:15px;line-height:1.6;text-wrap:pretty}.pc-passage mark{background:none;color:var(--ink);font-weight:500}.pc-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:16px -16px 0;padding:16px 16px 0;border-top:1px solid var(--line)}.pc-cite{display:grid;min-width:0;gap:1px;font-size:12px;line-height:1.4}.pc-cite span{overflow:hidden;color:var(--ink);font-weight:500;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2}.pc-cite time{color:var(--muted);font-variant-numeric:tabular-nums}.pc-foot .pop-src{flex:none;height:30px;margin-top:0;padding:0 10px}.pop-src{display:inline-flex;align-items:center;gap:5px;height:32px;margin-top:14px;padding:0 11px;border:1px solid var(--line);border-radius:calc(var(--radius) - 2px);color:var(--ink);font-size:12.5px;font-weight:500;text-decoration:none;transition:transform .16s var(--ease-out),background-color .14s ease}.pop-src:active{transform:scale(.97)}@media(hover:hover)and (pointer:fine){.pop-src:hover{background:var(--sunken)}}.ic-sm{width:13px;height:13px;flex:none}.pc-k{display:flex;align-items:center;gap:6px;color:var(--muted);font:11px/1.4 var(--mono);text-transform:uppercase;letter-spacing:.06em}.pc-v{margin:8px 0 4px!important;font-size:40px;font-weight:600;line-height:1.05;letter-spacing:-.045em;font-variant-numeric:tabular-nums}.pc-d{color:var(--muted);font-size:14px}.viz{display:grid;gap:8px;margin-top:14px}.viz-row{display:grid;grid-template-columns:76px 1fr auto;align-items:center;gap:10px;font-size:12px;font-variant-numeric:tabular-nums}.viz-l{color:var(--muted)}.viz-n{min-width:44px;text-align:right;font-weight:500}.viz-bar{height:6px;overflow:hidden;border-radius:99px;background:var(--sunken)}.viz-bar i{display:block;height:100%;border-radius:inherit;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .28s var(--ease-out) 60ms}.pop[data-state=open] .viz-bar i{transform:scaleX(var(--v, 0))}.pop[data-instant] .viz-bar i{transition:none}.pc-frame{position:relative;aspect-ratio:16 / 10;overflow:hidden;margin:-4px -4px 12px;border:1px solid var(--line);border-radius:var(--radius);background:var(--sunken)}.pc-frame iframe{position:absolute;inset:0;width:calc(100% / .6);height:calc(100% / .6);border:0;transform:scale(.6);transform-origin:0 0;pointer-events:none;opacity:0;transition:opacity .2s ease}.pc-frame iframe.is-ready{opacity:1}.pc-t{font-size:15px;font-weight:600}.pc-demo .pc-d{margin-top:2px}.fig{margin:2.2em 0 2.4em;overflow:hidden;border:1px solid var(--line);border-radius:calc(var(--radius) + 4px);background:var(--card);color:var(--ink)}.fig-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 14px;padding:10px 12px;border-bottom:1px solid var(--line)}.fig-code{font-size:13px;color:var(--muted)}.fig-code [data-code]{color:var(--ink)}.fig-stage{position:relative;display:grid;min-height:184px;padding:20px;background:var(--sunken)}.fig figcaption a{color:var(--ink)}.fig figcaption{padding:12px 14px;border-top:1px solid var(--line);color:var(--muted);font-size:14px;line-height:1.6}.fseg{position:relative;display:inline-flex;max-width:100%;padding:3px;border-radius:calc(var(--radius) - 1px);background:var(--sunken)}.fseg button,.fseg-hl span{display:flex;align-items:center;height:30px;padding:0 10px;font-size:12.5px;font-weight:500;white-space:nowrap}.fseg button{border:0;border-radius:6px;background:none;color:var(--muted);cursor:pointer;transition:transform .16s var(--ease-out)}.fseg button:active{transform:scale(.97)}.fseg button:focus-visible{box-shadow:0 0 0 2px color-mix(in srgb,var(--ring) 60%,transparent)}.fseg-hl{position:absolute;inset:3px;display:flex;background:var(--card);box-shadow:var(--shadow-xs);pointer-events:none;clip-path:inset(0 var(--r, 100%) 0 var(--l, 0) round 6px);transition:clip-path .22s var(--ease-in-out)}.fseg-hl span{color:var(--ink)}.fseg[data-instant] .fseg-hl{transition:none}.demo-rec{border-bottom:1px solid var(--line);background:#f0efeb}.demo-rec video{display:block;width:100%;height:auto}.demo-frame{position:relative;aspect-ratio:16 / 10;overflow:hidden;background:var(--sunken) radial-gradient(color-mix(in srgb,var(--muted) 22%,transparent) .75px,transparent .75px) 0 0 / 12px 12px}.demo-frame iframe{position:absolute;inset:0;width:125%;height:125%;border:0;transform:scale(.8);transform-origin:0 0;opacity:0;transition:opacity .26s var(--ease-out)}.demo-frame.is-ready iframe{opacity:1}.fig-demo figcaption{display:flex;align-items:baseline;justify-content:space-between;gap:6px 16px;flex-wrap:wrap}.fig .demo-open{flex:none;font-weight:500;text-decoration:none}@media(hover:hover)and (pointer:fine){.fig .demo-open:hover{text-decoration:underline;text-underline-offset:3px}}.fig-range{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted)}.fig-range output{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}.fig-range input{width:132px;touch-action:pan-y}.fig-lat{align-content:center;gap:30px;padding:34px 20px 22px}.lat-track{position:relative;height:14px;border-radius:99px;background:var(--card);box-shadow:inset 0 0 0 1px var(--line)}.lat-fill{position:absolute;inset:0;border-radius:inherit;background:repeating-linear-gradient(90deg,var(--ink) 0 calc(var(--seg, 8.5%) - 2px),transparent calc(var(--seg, 8.5%) - 2px) var(--seg, 8.5%));clip-path:inset(0 calc(100% - var(--p, 34%)) 0 0);transition:clip-path .26s var(--ease-in-out)}.lat-mark{position:absolute;top:-8px;bottom:-8px;width:1px;background:var(--muted)}.lat-mark[data-at="100"]{left:10%}.lat-mark[data-at="1000"]{right:0}.lat-mark>span{position:absolute;top:calc(100% + 6px);left:0;transform:translate(-50%);color:var(--muted);font-size:11.5px;line-height:1;white-space:nowrap}.lat-mark[data-at="1000"]>span{left:auto;right:0;transform:none}.lat-mark b{font-weight:600;color:var(--ink)}.lat-read{display:flex;align-items:baseline;gap:10px;margin:0;font-size:14px;color:var(--muted)}.lat-read strong{font-size:30px;font-weight:600;letter-spacing:-.04em;font-variant-numeric:tabular-nums;color:var(--ink)}.fig-agent .ag{grid-area:1 / 1;display:grid;align-content:center;opacity:0;filter:blur(3px);pointer-events:none;transition:opacity .2s ease,filter .2s ease}.fig-agent[data-view=person] .ag-person,.fig-agent[data-view=agent] .ag-agent{opacity:1;filter:none}.ag-card{width:min(100%,340px);justify-self:center;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card)}.ag-card p{margin:0}.ag-k{font:11px/1.4 var(--mono);color:var(--muted)}.ag-t{margin-top:4px!important;font-size:16px;font-weight:600;color:var(--ink)}.ag-m{font-size:13px;color:var(--muted)}.ag-actions{display:flex;align-items:center;gap:14px;margin-top:14px}.ag-btn{height:32px;padding:0 14px;display:inline-flex;align-items:center;border-radius:calc(var(--radius) - 2px);background:var(--accent);color:var(--accent-ink);font-size:13px;font-weight:500}.ag-link{font-size:13px;text-decoration:underline;text-underline-offset:3px;color:var(--ink)}.ag-agent{display:grid}.ag-tree{grid-area:1 / 1;margin:0;padding:0;list-style:none;font:12.5px/1.9 var(--mono);color:var(--muted);transition:opacity .2s ease,filter .2s ease}.ag-tree b{font-weight:600;color:var(--ink)}.ag-tree em{font-style:normal;color:var(--muted);opacity:.8}.ag-tree .i1{padding-left:16px;border-left:1px solid var(--line);margin-left:6px}.ag-bad b{color:var(--bad)}.fig-agent[data-semantic=true] .ag-bad,.fig-agent[data-semantic=false] .ag-good{opacity:0;filter:blur(3px)}.fig-switch{display:inline-flex;align-items:center;gap:8px;min-height:36px;font-size:12.5px;font-weight:500;cursor:pointer}.fig-switch input{position:relative;width:34px;height:20px;margin:0;flex:none;border-radius:99px;background:var(--line);cursor:pointer;appearance:none;-webkit-appearance:none;transition:background-color .14s ease}.fig-switch input:before{content:"";position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:var(--card);box-shadow:var(--shadow-xs);transition:transform .2s var(--ease-out)}.fig-switch input:checked{background:var(--accent)}.fig-switch input:checked:before{transform:translate(14px)}.fig-switch:active input:before{transform:scale(.95)}.fig-switch:active input:checked:before{transform:translate(14px) scale(.95)}@media(max-width:760px){.rail-ind{display:none}.essay-rail nav{border-left:0}.essay-rail nav a{padding-left:0}.fig-stage{padding:16px}.essay blockquote.pull{font-size:22px}}@media(max-width:420px){.fig-bar{padding:10px}.fseg button,.fseg-hl span{padding:0 8px;font-size:12px}.fig-range input{width:108px}}@media(prefers-reduced-motion:reduce){.pop,.pop[data-state=open]{transform:none;transition-property:opacity}.viz-bar i,.fseg-hl,.lat-fill,.rail-ind,.fig-switch input:before{transition:none}.fig-agent .ag,.ag-tree{filter:none;transition-property:opacity}.demo-frame iframe{transition:none}}