:root{--bg:oklch(98% .004 95);--surface:oklch(100% .002 95);--fg:oklch(20% .018 70);--muted:oklch(48% .012 70);--border:oklch(90% .006 95);--accent:oklch(52% .1 28);--accent-soft:color-mix(in oklch, var(--accent) 14%, transparent);--fg-soft:color-mix(in oklch, var(--fg) 6%, transparent);--font-display:"Iowan Old Style", "Charter", Georgia, "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;--font-body:-apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;--font-mono:ui-monospace, "JetBrains Mono", "SF Mono", Menlo, "PingFang SC", monospace;--fs-h1:clamp(34px, 4.6vw, 54px);--fs-h2:clamp(28px, 3.4vw, 40px);--fs-h3:20px;--fs-lead:18px;--fs-body:16px;--fs-meta:13px;--gap-xs:8px;--gap-sm:12px;--gap-md:20px;--gap-lg:32px;--gap-xl:56px;--gap-2xl:96px;--container:1120px;--gutter:32px}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--fg);font-family:var(--font-body);font-size:var(--fs-body);text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;text-autospace:normal;margin:0;line-height:1.75}img,svg{max-width:100%;display:block}a{color:inherit;text-decoration:none}a:focus-visible,button:focus-visible{outline:2px solid var(--fg);outline-offset:3px}button{font:inherit;cursor:pointer}p{text-wrap:pretty;margin:0}h1,h2,h3,h4{text-wrap:balance}.container{max-width:var(--container);padding-inline:var(--gutter);margin-inline:auto}.section{padding-block:clamp(40px, 6vw, var(--gap-xl))}.section.flush-top{padding-top:0}.row{align-items:center;gap:var(--gap-md);display:flex}.row-between{justify-content:space-between;align-items:center;gap:var(--gap-md);display:flex}.h1,h1{font-family:var(--font-display);font-size:var(--fs-h1);letter-spacing:0;margin:0;font-weight:600;line-height:1.15}.h2,h2{font-family:var(--font-display);font-size:var(--fs-h2);margin:0;line-height:1.2}.h3,h3{font-family:var(--font-display);font-size:var(--fs-h3);margin:0;font-weight:600;line-height:1.4}.lead{font-size:var(--fs-lead);color:var(--muted);max-width:56ch;margin:0;line-height:1.8}.eyebrow{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin:0 0 var(--gap-md);font-size:12px}.eyebrow-muted .eyebrow{color:var(--muted)}.meta{font-family:var(--font-mono);font-size:var(--fs-meta);color:var(--muted)}.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.topnav{background:var(--bg);border-bottom:1px solid var(--border)}.topnav-inner{justify-content:space-between;align-items:baseline;padding-block:18px;display:flex}.topnav .wordmark{font-family:var(--font-display);font-size:17px;font-weight:600}.topnav .wordmark span{color:var(--muted);font-weight:400}.topnav nav{gap:var(--gap-lg);align-items:baseline;display:flex}.topnav nav a{color:var(--muted);font-size:14px}.topnav nav a:hover{color:var(--fg)}.topnav nav a[aria-current=page]{color:var(--fg);border-bottom:1px solid var(--fg);padding-bottom:2px}.pagefoot{padding-block:var(--gap-lg) var(--gap-xl);color:var(--muted);border-top:1px solid var(--border);font-size:13px}.pagefoot .row-between{gap:var(--gap-md);flex-wrap:wrap}.pagefoot a{border-bottom:1px solid var(--border);padding-bottom:1px}.pagefoot a:hover{color:var(--fg);border-bottom-color:var(--fg)}.tag{color:var(--muted);border:1px solid var(--border);font-family:var(--font-mono);white-space:nowrap;background:0 0;align-items:center;padding:3px 10px;font-size:12px;display:inline-flex}.rule{border:0;border-top:1px solid var(--border);margin:0}.rule-strong{border:0;border-top:1px solid var(--fg);margin:0}.streak-strip{border-block:1px solid var(--border);padding-block:13px}.streak-strip .row-between{flex-wrap:wrap;row-gap:4px}.streak-strip .meta{letter-spacing:.02em}.streak-strip .accent{color:var(--accent)}.streak-strip+.pagefoot{border-top:0}.masthead{padding-block:clamp(56px,9vw,112px) clamp(32px,4.5vw,48px)}.masthead h1{margin-top:var(--gap-sm)}.masthead .lead{margin-top:var(--gap-md)}.stream-head{align-items:baseline;margin-bottom:28px}.stream-title{font-size:26px}.log-row{gap:var(--gap-lg);border-bottom:1px solid var(--border);grid-template-columns:116px 1fr 132px;align-items:baseline;padding:26px 0;display:grid}.log-row .log-date{white-space:nowrap}.log-row h3 a{text-underline-offset:5px;text-decoration:underline 1px #0000;transition:text-decoration-color .15s}.log-row h3 a:hover{text-decoration-color:var(--fg)}.log-row .dek{color:var(--muted);margin:6px 0 0;font-size:15px}.log-row .pull{flex-direction:column;align-items:flex-end;gap:6px;display:flex}.log-row[hidden]{display:none}.evergreen-label{letter-spacing:.08em;margin-bottom:14px}.evergreen{border-top:1px solid var(--fg);gap:var(--gap-lg);grid-template-columns:1fr auto;align-items:baseline;padding-top:26px;display:grid}.evergreen h3 a{text-underline-offset:5px;text-decoration:underline 1px #0000;transition:text-decoration-color .15s}.evergreen h3 a:hover{text-decoration-color:var(--fg)}.evergreen .dek{color:var(--muted);margin:6px 0 0;font-size:15px}.article{max-width:720px;font-size:16.5px;line-height:1.85}.article h1{font-size:clamp(32px,4.2vw,48px);line-height:1.2}.article h2{font-size:26px;font-weight:600;line-height:1.3}.backlink{color:var(--muted);padding-block:26px 0;font-size:14px;display:inline-block}.backlink:hover{color:var(--fg)}.note-head{padding-block:var(--gap-md) var(--gap-lg);border-bottom:1px solid var(--fg)}.note-head .meta-row{margin-top:var(--gap-md);flex-wrap:wrap;align-items:center;gap:14px;display:flex}.evergreen-banner{border:1px solid var(--border);gap:var(--gap-md);flex-wrap:wrap;justify-content:space-between;align-items:baseline;row-gap:4px;margin-top:24px;padding:16px 20px;display:flex}.evergreen-banner p{color:var(--muted);font-size:14px}.evergreen-banner strong{color:var(--fg)}.note-sec{padding-block:34px 6px}.sec-label{font-family:var(--font-mono);letter-spacing:.1em;color:var(--muted);margin:0 0 10px;font-size:12px}.note-sec h2{margin-bottom:18px}.note-sec p+p{margin-top:1.1em}.note-sec .codeblock+p,.note-sec .ds-table+p{margin-top:1.3em}.note-sec ul,.note-sec ol{margin:1.1em 0 0;padding-left:1.4em}.note-sec li{margin-top:.45em}.note-sec li::marker{color:var(--muted);font-family:var(--font-mono);font-size:.85em}.note-sec a.intext{border-bottom:1px solid var(--muted);padding-bottom:1px}.note-sec a.intext:hover{border-bottom-color:var(--fg)}.note-sec a:not([class]){border-bottom:1px solid var(--muted);padding-bottom:1px}.note-sec a:not([class]):hover{border-bottom-color:var(--fg)}.note-sec :not(pre)>code{font-family:var(--font-mono);font-size:.88em}.inset{border-left:2px solid var(--fg);color:var(--fg);margin:1.3em 0 0;padding:2px 0 2px 20px}.codeblock{background:color-mix(in oklch, var(--fg) 3.5%, var(--bg));border:1px solid var(--border);margin:1.4em 0 0;padding:20px 24px;overflow-x:auto}.codeblock pre{font-family:var(--font-mono);color:var(--fg);white-space:pre;margin:0;font-size:13.5px;line-height:1.75}.codeblock .cm{color:var(--muted)}.codeblock .kw{font-weight:600}.ds-table{border-collapse:collapse;width:100%;margin-top:1.4em;font-size:14px}.ds-table th,.ds-table td{text-align:left;border-bottom:1px solid var(--border);padding:10px 14px 10px 0}.ds-table th{color:var(--muted);font-weight:500;font-family:var(--font-mono);letter-spacing:.04em;font-size:12px}.ds-table .num-col{font-family:var(--font-mono);font-variant-numeric:tabular-nums;text-align:right;padding-right:0}.ds-table.rev-table{margin-top:1.2em}.ds-table.rev-table th,.ds-table.rev-table td{vertical-align:top}.ds-table.rev-table .num-col{text-align:left;white-space:nowrap;padding-right:14px}.takeaway{counter-reset:tk;margin:1.3em 0 0;padding:0;list-style:none}.takeaway li{counter-increment:tk;border-top:1px solid var(--border);margin-top:0;padding:14px 0 14px 44px;position:relative}.takeaway li:before{content:counter(tk, decimal-leading-zero);font-family:var(--font-mono);color:var(--muted);font-size:12px;position:absolute;top:16px;left:0}.colophon{padding-block:44px 20px}.colophon .sig{font-family:var(--font-display);margin-top:26px;font-size:22px}.colophon .meta{margin-top:10px}.colophon .discuss{color:var(--accent);border-bottom:1px solid var(--accent);margin-top:18px;padding-bottom:2px;font-size:15px;display:inline-block}.colophon .discuss:hover{color:color-mix(in oklch, var(--accent) 82%, black)}.prevnext{gap:var(--gap-lg);border-top:1px solid var(--border);grid-template-columns:1fr 1fr;padding-block:30px;display:grid}.prevnext .pn-title{font-family:var(--font-display);color:var(--muted);margin-top:8px;font-size:17px}.prevnext .next{text-align:right}.prevnext a{display:block}.prevnext a:hover .pn-title{color:var(--fg)}@media (width<=920px){.log-row{grid-template-columns:1fr;gap:6px}.log-row .pull{flex-direction:row;align-items:center}.evergreen{grid-template-columns:1fr;gap:6px}.prevnext{grid-template-columns:1fr}.prevnext .next{text-align:left}}