@layer reset{*,:before,:after{box-sizing:border-box}*{margin:0}html{-webkit-text-size-adjust:100%;text-size-adjust:100%}body{min-height:100vh}img,svg,video{max-width:100%;display:block}input,button,textarea,select{font:inherit;color:inherit}button{cursor:pointer}p,h1,h2,h3,h4{overflow-wrap:break-word}table{border-collapse:collapse}[hidden]{display:none!important}}@layer tokens{:root{color-scheme:light;--paper:#f5f7f6;--surface:#fff;--surface-2:#eef2f8;--ink:#0f1b2d;--ink-2:#4f5a6c;--ink-3:#7c8697;--rule:#d8dfea;--rule-2:#e7ecf3;--grid:#e1e7f0;--cobalt:#2f49d1;--cobalt-ink:#1d2e99;--cobalt-soft:#e9edff;--cobalt-text:#2a41bd;--marigold:#ffb000;--marigold-lip:#c98700;--marigold-soft:#fff4d9;--ok:#0f7a52;--danger:#b4232f;--danger-soft:#fdecee;--tape:#fff;--tape-ink:#14213a;--shadow-1:0 1px 2px #0f1b2d0f, 0 1px 1px #0f1b2d0a;--shadow-2:0 10px 30px -12px #0f1b2d2e, 0 2px 6px #0f1b2d0f;--s0:#2f49d1;--s1:#ffb000;--s2:#0f9f8f;--s3:#c2417a;--s4:#6f7f99;--s5:#7a4fd6;--font-display:"Bricolage", "Avenir Next", "Segoe UI", system-ui, sans-serif;--font-body:"Atkinson Next", "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono:"JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;--r-s:8px;--r:12px;--r-l:18px;--r-xl:26px;--gutter:16px;--max:1200px;--header-h:64px}@media (width>=720px){:root{--gutter:28px}}:root[data-theme=dark]{color-scheme:dark;--paper:#0b1020;--surface:#121a2e;--surface-2:#19223a;--ink:#e9eef8;--ink-2:#aab4c8;--ink-3:#7e89a1;--rule:#26314c;--rule-2:#1d2740;--grid:#1a2440;--cobalt:#7d91ff;--cobalt-ink:#aab8ff;--cobalt-soft:#1a2552;--cobalt-text:#9aaaff;--marigold:#ffc046;--marigold-lip:#b07c10;--marigold-soft:#2d2410;--ok:#46c495;--danger:#ff7b86;--danger-soft:#3a1820;--tape:#f7f8fb;--tape-ink:#14213a;--shadow-1:0 1px 2px #0006;--shadow-2:0 14px 34px -14px #000000b3, 0 2px 6px #00000059;--s0:#7d91ff;--s1:#ffc046;--s2:#3cc7b5;--s3:#f07aa9;--s4:#95a3bd;--s5:#a98bff}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--paper:#0b1020;--surface:#121a2e;--surface-2:#19223a;--ink:#e9eef8;--ink-2:#aab4c8;--ink-3:#7e89a1;--rule:#26314c;--rule-2:#1d2740;--grid:#1a2440;--cobalt:#7d91ff;--cobalt-ink:#aab8ff;--cobalt-soft:#1a2552;--cobalt-text:#9aaaff;--marigold:#ffc046;--marigold-lip:#b07c10;--marigold-soft:#2d2410;--ok:#46c495;--danger:#ff7b86;--danger-soft:#3a1820;--tape:#f7f8fb;--tape-ink:#14213a;--shadow-1:0 1px 2px #0006;--shadow-2:0 14px 34px -14px #000000b3, 0 2px 6px #00000059;--s0:#7d91ff;--s1:#ffc046;--s2:#3cc7b5;--s3:#f07aa9;--s4:#95a3bd;--s5:#a98bff}}}@layer base{html{scroll-padding-top:calc(var(--header-h) + 16px)}body{background:var(--paper);color:var(--ink);font-family:var(--font-body);font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-size:1.0625rem;line-height:1.6}h1,h2,h3,h4{font-family:var(--font-display);letter-spacing:-.02em;text-wrap:balance;font-weight:700;line-height:1.12}a{color:var(--cobalt-text);text-underline-offset:.18em;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--cobalt);outline-offset:2px;border-radius:4px}::selection{background:var(--marigold);color:#0f1b2d}code,kbd,samp{font-family:var(--font-mono);font-size:.9em}var{font-family:Times New Roman,Georgia,serif;font-size:1.08em;font-style:italic}sup,sub{line-height:0}hr{border:0;border-top:1px solid var(--rule)}}@layer layout{.container{width:100%;max-width:var(--max);padding-inline:var(--gutter);margin-inline:auto}.skip-link{z-index:100;background:var(--ink);color:var(--paper);border-radius:var(--r-s);padding:10px 14px;position:absolute;top:-48px;left:12px}.skip-link:focus{top:12px}main{display:block}.section{padding-block:clamp(40px,6vw,72px)}.stack>*+*{margin-top:var(--stack,1rem)}}@layer components{.site-header{z-index:40;background:color-mix(in srgb, var(--paper) 86%, transparent);-webkit-backdrop-filter:saturate(1.4)blur(10px);border-bottom:1px solid var(--rule-2);position:sticky;top:0}.site-header__bar{height:var(--header-h);align-items:center;gap:16px;display:flex}.brand{color:var(--ink);flex:none;align-items:center;gap:10px;text-decoration:none;display:inline-flex}.brand svg{width:34px;height:34px}.brand__word{font-family:var(--font-display);letter-spacing:-.03em;font-size:1.3rem;font-weight:700}.brand__word b{font-weight:700}.brand__word span{color:var(--cobalt);font-weight:500}.nav{gap:2px;margin-left:12px;display:none}.nav a,.nav button{height:38px;color:var(--ink-2);white-space:nowrap;background:0 0;border:0;border-radius:10px;align-items:center;gap:6px;padding:0 12px;font-size:.95rem;font-weight:600;text-decoration:none;display:inline-flex}.nav a:hover,.nav button:hover,.nav a[aria-current=page]{color:var(--ink);background:var(--surface-2)}.header-tools{align-items:center;gap:8px;margin-left:auto;display:flex}.search-trigger{border:1px solid var(--rule);background:var(--surface);min-width:40px;height:40px;color:var(--ink-3);box-shadow:0 2px 0 var(--rule-2);border-radius:12px;align-items:center;gap:10px;padding:0 10px 0 12px;display:inline-flex}.search-trigger:hover{color:var(--ink);border-color:var(--ink-3)}.search-trigger svg{flex:none;width:18px;height:18px}.nav svg{width:16px;height:16px}.search-trigger__label{font-size:.95rem;display:none}.search-trigger kbd{border:1px solid var(--rule);color:var(--ink-3);background:var(--paper);border-radius:6px;padding:2px 6px;font-size:.75rem;display:none}.icon-btn{width:40px;height:40px;color:var(--ink-2);background:0 0;border:1px solid #0000;border-radius:12px;place-items:center;display:inline-grid}.icon-btn:hover{background:var(--surface-2);color:var(--ink)}.icon-btn svg{width:20px;height:20px}.menu-btn{display:inline-grid}@media (width>=980px){.nav{display:flex}.menu-btn{display:none}.search-trigger{min-width:210px}.search-trigger__label{display:inline}.search-trigger kbd{margin-left:auto;display:inline}}@media (width>=1180px){.search-trigger{min-width:270px}}.theme-toggle .moon{display:none}:root[data-theme=dark] .theme-toggle .moon{display:block}:root[data-theme=dark] .theme-toggle .sun{display:none}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .theme-toggle .moon{display:block}:root:not([data-theme=light]) .theme-toggle .sun{display:none}}.menu-panel{inset:var(--header-h) 0 auto 0;z-index:39;max-height:calc(100dvh - var(--header-h));background:var(--surface);border-bottom:1px solid var(--rule);box-shadow:var(--shadow-2);position:fixed;overflow:auto}.menu-panel__grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:6px;padding-block:18px 24px;display:grid}.menu-panel a{color:var(--ink);border-radius:12px;align-items:center;gap:12px;padding:10px 12px;text-decoration:none;display:flex}.menu-panel a:hover{background:var(--surface-2)}.menu-panel .cat-icon{width:36px;height:36px}.menu-panel small{color:var(--ink-3);font-size:.82rem;display:block}.menu-panel__foot{border-top:1px solid var(--rule-2);flex-wrap:wrap;gap:8px 18px;padding-top:14px;padding-bottom:20px;display:flex}.menu-panel__foot a{padding:6px 0;font-weight:600}.cat-icon{background:var(--cobalt-soft);width:44px;height:44px;color:var(--cobalt);border-radius:12px;flex:none;place-items:center;display:inline-grid}.cat-icon svg{width:58%;height:58%}.btn{--lip:var(--rule);border:1px solid var(--rule);background:var(--surface);min-height:48px;color:var(--ink);box-shadow:0 3px 0 var(--lip);user-select:none;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:0 20px;font-size:1rem;font-weight:700;text-decoration:none;transition:transform 60ms,box-shadow 60ms,background-color .15s;display:inline-flex;position:relative}.btn:hover{background:var(--surface-2)}.btn:active{box-shadow:0 1px 0 var(--lip);transform:translateY(2px)}.btn:disabled{opacity:.7;cursor:default}.btn--equals{--lip:var(--marigold-lip);background:var(--marigold);border-color:var(--marigold-lip);color:#1b1300}.btn--equals:hover{background:#ffbb24}.btn--equals .eq{font-family:var(--font-mono);font-size:1.35rem;font-weight:700;line-height:1}.btn--primary{--lip:var(--cobalt-ink);background:var(--cobalt);border-color:var(--cobalt-ink);color:#fff}:root[data-theme=dark] .btn--primary{color:#0b1020}.btn--ghost{box-shadow:none;color:var(--ink-2);background:0 0;border-color:#0000;min-height:40px;padding:0 12px}.btn--ghost:hover{background:var(--surface-2);color:var(--ink)}.btn--ghost:active{box-shadow:none;transform:none}.btn--sm{border-radius:10px;min-height:36px;padding:0 12px;font-size:.9rem}.btn svg{width:18px;height:18px}.crumbs{color:var(--ink-3);padding-top:22px;font-size:.88rem}.crumbs ol{flex-wrap:wrap;align-items:center;gap:4px 6px;padding:0;list-style:none;display:flex}.crumbs li+li:before{content:"/";color:var(--rule);margin-right:6px}.crumbs a{color:var(--ink-2);text-decoration:none}.crumbs a:hover{color:var(--cobalt-text);text-decoration:underline}.page-head{max-width:860px;padding-block:10px 26px}.page-head h1{font-size:clamp(2rem,1.4rem + 2.6vw,3.1rem)}.page-head .lede{color:var(--ink-2);max-width:68ch;margin-top:12px;font-size:clamp(1.05rem,1rem + .35vw,1.22rem)}.eyebrow{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);font-size:.76rem}.calc-main{align-items:start;gap:20px;display:grid}.calc-main>*,.calc>*{min-width:0}.work__steps li{overflow-wrap:anywhere}@media (width>=900px){.calc-main{grid-template-columns:minmax(0,1.12fr) minmax(320px,.88fr);gap:28px}}.calc-panel{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-l);box-shadow:var(--shadow-1);padding:clamp(16px,2.6vw,26px)}.fields{grid-template-columns:repeat(6,minmax(0,1fr));gap:16px 14px;display:grid}.fields--stack .field{grid-column:1/-1!important}.field{grid-column:span 6;min-width:0}@media (width>=560px){.field--half{grid-column:span 3}.field--third{grid-column:span 2}}.field__label{color:var(--ink);margin-bottom:6px;font-size:.93rem;font-weight:700;display:block}.field__help{color:var(--ink-3);margin-top:6px;font-size:.84rem;line-height:1.4;display:block}.field-heading{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);border-top:1px dashed var(--rule);grid-column:1/-1;padding-top:6px;font-size:.76rem}.field-heading:first-child{border-top:0;padding-top:0}.control{border:1px solid var(--rule);background:var(--paper);border-radius:12px;align-items:center;min-height:48px;transition:border-color .15s,box-shadow .15s,background-color .15s;display:flex}.control:hover{border-color:var(--ink-3)}.control:focus-within{border-color:var(--cobalt);box-shadow:0 0 0 3px color-mix(in srgb, var(--cobalt) 22%, transparent);background:var(--surface)}.control input,.control select,.control textarea{font-variant-numeric:tabular-nums;background:0 0;border:0;outline:none;flex:1;min-width:0;height:46px;padding:0 12px;font-size:1.05rem}.control input[type=number]::-webkit-inner-spin-button{opacity:.4}.control textarea{resize:vertical;height:auto;min-height:120px;padding:10px 12px;line-height:1.5}.control select{appearance:none;cursor:pointer;padding-right:36px}.control--select{position:relative}.control--select:after{content:"";border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);pointer-events:none;width:8px;height:8px;margin-top:-6px;position:absolute;top:50%;right:14px;transform:rotate(45deg)}.control .mono,.mono{font-family:var(--font-mono)}.affix{color:var(--ink-3);white-space:nowrap;padding:0 12px;font-size:.95rem;font-weight:600}.affix--pre{padding-right:0}.affix--post{padding-left:0}.control--unit select{border-left:1px solid var(--rule);width:auto;max-width:48%;color:var(--ink-2);flex:none;font-size:.95rem}.control--unit{position:relative}.segmented{background:var(--surface-2);border:1px solid var(--rule-2);border-radius:12px;flex-wrap:wrap;gap:4px;padding:4px;display:flex}.segmented label{flex:auto;position:relative}.segmented input{opacity:0;cursor:pointer;position:absolute;inset:0}.segmented span{min-height:38px;color:var(--ink-2);text-align:center;border-radius:9px;justify-content:center;align-items:center;padding:0 12px;font-size:.93rem;font-weight:600;line-height:1.2;display:flex}.segmented input:checked+span{background:var(--surface);color:var(--ink);box-shadow:0 1px 0 var(--rule), var(--shadow-1)}.segmented input:focus-visible+span{outline:3px solid var(--cobalt);outline-offset:1px}.check{cursor:pointer;align-items:center;gap:10px;min-height:44px;font-weight:600;display:inline-flex}.check input{width:20px;height:20px;accent-color:var(--cobalt)}.fraction-in{align-items:center;gap:10px;display:inline-flex}.fraction-in__stack{gap:6px;width:92px;display:grid}.fraction-in__stack .control{min-height:42px}.fraction-in__stack input{text-align:center;height:40px}.fraction-in__bar{background:var(--ink);border-radius:2px;height:2px}.fraction-in__whole{width:76px}.fraction-in__whole input{text-align:center}.calc-actions{flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;display:flex}.calc-actions .btn--equals{flex:auto;max-width:280px}.tape-col{position:relative}@media (width>=900px){.tape-col{top:calc(var(--header-h) + 16px);position:sticky}}.tape{--zig:10px;background:var(--tape);color:var(--tape-ink);padding:18px 20px calc(22px + var(--zig));font-family:var(--font-mono);filter:drop-shadow(0 10px 16px #0f1b2d1f)drop-shadow(0 1px 1px #0f1b2d14);-webkit-mask:conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) 50% / calc(2 * var(--zig)) 100%;mask:conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) 50% / calc(2 * var(--zig)) 100%;border-radius:6px 6px 0 0;font-size:.93rem;line-height:1.5;position:relative}.tape-shadow{filter:drop-shadow(0 12px 18px #0f1b2d24)drop-shadow(0 1px 1px #0f1b2d1a)}:root[data-theme=dark] .tape-shadow{filter:drop-shadow(0 14px 24px #0009)}.tape-head{letter-spacing:.14em;text-transform:uppercase;color:#6b7487;border-bottom:1px dashed #c9d0dc;justify-content:space-between;gap:12px;margin-bottom:12px;padding-bottom:12px;font-size:.72rem;display:flex}.tape-rows{gap:6px;display:grid}.tape-row{align-items:baseline;gap:8px;display:flex}.tape-row dt{color:#4d576b;flex:none;max-width:60%}.tape-row:after{content:none}.tape-row dt+dd{text-align:right;overflow-wrap:anywhere;background:radial-gradient(circle,#b9c1cf 1px,#0000 1.4px) 0 72%/7px 7px repeat-x;flex:1;font-weight:600}.tape-row dd>*{background:var(--tape)}.tape-row dd{position:relative}.tape-row dd small{color:#6b7487;background:var(--tape);font-size:.8rem;font-weight:400;display:block}.tape-row.is-em dt,.tape-row.is-em dd{color:#1d2e99;font-weight:700}.tape-val{background:var(--tape);padding-left:6px}.tape-total{gap:2px;margin-top:16px;padding-top:14px;display:grid;position:relative}.tape-total:before{content:"";border-top:2px solid #ffb000;border-bottom:2px solid #ffb000;height:7px;position:absolute;top:0;left:0;right:0}.tape-total__label{letter-spacing:.12em;text-transform:uppercase;color:#6b7487;margin-top:6px;font-size:.76rem}.tape-total__value{color:#0f1b2d;letter-spacing:-.02em;overflow-wrap:anywhere;font-size:clamp(1.6rem,1.2rem + 1.6vw,2.3rem);font-weight:700;line-height:1.15}.tape-total__sub{color:#4d576b;font-size:.86rem}.tape-notes{color:#4d576b;font-size:.82rem;font-family:var(--font-body);border-top:1px dashed #c9d0dc;margin-top:14px;padding:10px 0 0 18px}.tape-status{font-family:var(--font-body);color:#4d576b;padding:6px 0;font-size:.95rem}.tape-status.is-error{color:#b4232f;font-weight:600}.tape.is-empty .tape-body:empty{display:none}.tape.is-printing .tape-body{animation:.32s cubic-bezier(.2,.7,.3,1) feed}@keyframes feed{0%{opacity:.25;transform:translateY(-8px)}to{opacity:1;transform:none}}.tape-tools{justify-content:flex-end;gap:6px;margin-top:10px;display:flex}.frac{vertical-align:middle;text-align:center;flex-direction:column;margin:0 .12em;font-size:.92em;line-height:1.1;display:inline-flex}.frac>span:first-child{border-bottom:1.5px solid;padding:0 .2em 1px}.frac>span:last-child{padding:1px .2em 0}.tape-total .frac{font-size:.7em}.calc-extra:empty{display:none}.calc-extra{gap:20px;margin-top:24px;display:grid}.work{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-l);padding:clamp(16px,2.6vw,24px)}.work__title{margin-bottom:12px;font-size:1.15rem}.work__steps{font-family:var(--font-mono);gap:10px;padding-left:1.4em;font-size:.93rem;line-height:1.7;display:grid}.work__steps li::marker{color:var(--ink-3);font-size:.85em}.work__steps var{font-family:Times New Roman,Georgia,serif}.result-html{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-l);padding:clamp(16px,2.6vw,24px);overflow-x:auto}.table-wrap{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-l);overflow-x:auto}.table-wrap.is-collapsed tr.is-extra{display:none}.table-more{margin:8px 12px 12px}.data-table{font-variant-numeric:tabular-nums;width:100%;font-size:.92rem}.data-table caption{text-align:left;font-family:var(--font-display);padding:14px 16px 6px;font-size:1.05rem;font-weight:700}.data-table th,.data-table td{border-bottom:1px solid var(--rule-2);white-space:nowrap;padding:9px 14px}.data-table thead th{background:var(--surface-2);text-transform:uppercase;letter-spacing:.06em;color:var(--ink-2);font-size:.8rem;font-weight:700;position:sticky;top:0}.data-table tbody th{color:var(--ink-2);font-weight:600}.data-table tbody tr:hover{background:var(--surface-2)}.data-table tfoot td{border-top:2px solid var(--rule);border-bottom:0;font-weight:700}.a-right{text-align:right}.a-left{text-align:left}.a-center{text-align:center}.chart{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-l);padding:clamp(14px,2.4vw,22px)}.chart-title{font-family:var(--font-display);letter-spacing:-.01em;margin-bottom:8px;font-size:1.05rem;font-weight:700}.chart-legend{color:var(--ink-2);flex-wrap:wrap;gap:4px 16px;margin-bottom:8px;padding:0;font-size:.86rem;list-style:none;display:flex}.chart-legend li{align-items:center;gap:6px;display:inline-flex}.sw{border-radius:3px;width:12px;height:12px;display:inline-block}.chart-svg{width:100%;height:auto;overflow:visible}.chart-svg .gl{stroke:var(--rule-2);stroke-width:1px}.chart-svg .yl{fill:var(--ink-3);text-anchor:end;font-size:11px;font-family:var(--font-mono)}.chart-svg .xl{fill:var(--ink-3);text-anchor:middle;font-size:11px;font-family:var(--font-mono)}.chart-svg .ln{fill:none;stroke-width:2.5px;stroke-linejoin:round;stroke-linecap:round}.chart--donut{flex-wrap:wrap;align-items:center;gap:20px;display:flex}.chart--donut .chart-title{flex-basis:100%}.chart--donut .chart-svg{flex:none;width:180px}.chart--donut .chart-legend{flex-direction:column}.s0{--c:var(--s0)}.s1{--c:var(--s1)}.s2{--c:var(--s2)}.s3{--c:var(--s3)}.s4{--c:var(--s4)}.s5{--c:var(--s5)}.ln{stroke:var(--c)}.dot,.bar,.seg,.sw{fill:var(--c);background:var(--c)}.prose{overflow-wrap:break-word;max-width:74ch}.prose code,.prose a{overflow-wrap:anywhere}.faq summary h3,.faq .faq__a{overflow-wrap:break-word}.prose>*+*{margin-top:1em}.prose h2{margin-top:2.1em;font-size:clamp(1.45rem,1.2rem + 1vw,1.9rem)}.prose h3{margin-top:1.7em;font-size:1.22rem}.prose h2+*,.prose h3+*{margin-top:.6em}.prose ul,.prose ol{padding-left:1.35em}.prose li+li{margin-top:.35em}.prose li::marker{color:var(--ink-3)}.prose strong{font-weight:700}.prose blockquote{border-left:3px solid var(--rule);color:var(--ink-2);padding-left:1em}.prose table{border:1px solid var(--rule);border-collapse:separate;border-spacing:0;border-radius:12px;width:100%;font-size:.95rem;overflow:hidden}@media (width<=640px){.prose table{display:block;overflow-x:auto}}.prose tr:last-child td{border-bottom:0}.prose th,.prose td{border-bottom:1px solid var(--rule-2);text-align:left;padding:8px 12px}.prose thead th{background:var(--surface-2);text-transform:uppercase;letter-spacing:.05em;color:var(--ink-2);font-size:.82rem}.prose code{background:var(--surface-2);border-radius:6px;padding:.1em .35em}.prose .formula,.formula{font-family:var(--font-mono);text-align:center;border:1px solid var(--rule);background-color:var(--surface);background-image:linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);background-position:-1px -1px;background-size:16px 16px;border-radius:14px;padding:18px 16px;font-size:1.02rem;line-height:1.9;overflow-x:auto}.formula var,.prose var{font-family:Times New Roman,Georgia,serif}.prose .note,.note{background:var(--marigold-soft);border-radius:12px;padding:12px 16px;font-size:.97rem}.prose .example,.example{background:var(--surface);border:1px solid var(--rule);border-radius:14px;padding:16px 18px}.example>*+*{margin-top:.6em}.article-layout{grid-template-columns:minmax(0,1fr);gap:40px;padding-block:48px 24px;display:grid}.article-layout>*{min-width:0}.prose pre{background:var(--surface-2);border-radius:12px;padding:14px 16px;font-size:.9rem;line-height:1.5;overflow-x:auto}.prose pre code{background:0 0;padding:0}.prose img,.prose svg{max-width:100%;height:auto}@media (width>=1040px){.article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:56px}}.side-card{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-l);padding:18px}.side-card h2{margin-bottom:10px;font-size:1rem}.side-list{gap:2px;padding:0;list-style:none;display:grid}.side-list a{color:var(--ink-2);border-radius:9px;padding:7px 10px;font-size:.95rem;line-height:1.35;text-decoration:none;display:block}.side-list a:hover{background:var(--surface-2);color:var(--ink)}.side-list a[aria-current=page]{background:var(--cobalt-soft);color:var(--cobalt-text);font-weight:700}@media (width>=1040px){.sidebar{top:calc(var(--header-h) + 16px);max-height:calc(100vh - var(--header-h) - 32px);align-self:start;position:sticky;overflow:auto}}.faq{margin-top:2.2em}.faq h2{margin-bottom:.6em}.faq details{border-top:1px solid var(--rule)}.faq details:last-child{border-bottom:1px solid var(--rule)}.faq summary{cursor:pointer;padding:16px 40px 16px 0;list-style:none;position:relative}.faq summary::-webkit-details-marker{display:none}.faq summary h3{font-size:1.08rem;font-family:var(--font-body);letter-spacing:0;margin:0;font-weight:700;line-height:1.4}.faq summary:after{content:"+";font-family:var(--font-mono);color:var(--cobalt);font-size:1.4rem;transition:transform .2s;position:absolute;top:12px;right:6px}.faq details[open] summary:after{transform:rotate(45deg)}.faq .faq__a{color:var(--ink-2);padding:0 0 18px}.related{margin-top:40px}.related h2{margin-bottom:14px;font-size:1.35rem}.chips{flex-wrap:wrap;gap:10px;padding:0;list-style:none;display:flex}.chip{background:var(--surface);border:1px solid var(--rule);min-height:40px;box-shadow:0 2px 0 var(--rule);color:var(--ink);border-radius:11px;align-items:center;padding:0 14px;font-size:.95rem;font-weight:600;text-decoration:none;display:inline-flex}.chip:hover{border-color:var(--cobalt);box-shadow:0 2px 0 var(--cobalt);color:var(--cobalt-text)}.meta-line{color:var(--ink-3);margin-top:28px;font-size:.88rem}.quick-answers{margin-top:32px}.quick-answers h2{margin-bottom:12px;font-size:1.2rem}.quick-answers .chip{min-height:36px;font-size:.9rem;font-family:var(--font-mono);font-weight:500}.quick-answers__all{margin-top:10px;font-size:.95rem}.keys{grid-template-columns:repeat(auto-fill,minmax(min(100%,250px),1fr));gap:14px;display:grid}.key{background:var(--surface);border:1px solid var(--rule);box-shadow:0 4px 0 var(--rule);color:var(--ink);border-radius:16px;grid-template-columns:auto 1fr;align-items:center;gap:4px 14px;padding:16px;text-decoration:none;transition:transform 80ms,box-shadow 80ms,border-color .15s;display:grid}.key:hover{border-color:var(--cobalt);box-shadow:0 4px 0 var(--cobalt)}.key:active{box-shadow:0 1px 0 var(--cobalt);transform:translateY(3px)}.key .cat-icon{grid-row:span 2}.key__name{font-family:var(--font-display);letter-spacing:-.01em;font-size:1.12rem;font-weight:700}.key__count{color:var(--ink-3);font-size:.86rem;font-family:var(--font-mono)}.link-grid{columns:1;column-gap:32px;padding:0;list-style:none}@media (width>=640px){.link-grid{columns:2}}@media (width>=1000px){.link-grid{columns:3}}.link-grid li{break-inside:avoid}.link-grid a{color:var(--ink);padding:6px 0;font-weight:600;text-decoration:none;display:block}.link-grid a:hover{color:var(--cobalt-text);text-decoration:underline}.link-grid small{color:var(--ink-3);margin-top:1px;font-size:.86rem;font-weight:400;line-height:1.35;display:block}.group-block+.group-block{margin-top:44px}.group-block h2{border-bottom:1px solid var(--rule);align-items:baseline;gap:10px;margin-bottom:14px;padding-bottom:10px;font-size:clamp(1.3rem,1.1rem + .8vw,1.65rem);display:flex}.group-block h2 .count{font-family:var(--font-mono);color:var(--ink-3);letter-spacing:0;font-size:.8rem;font-weight:500}.card-list{grid-template-columns:repeat(auto-fill,minmax(min(100%,280px),1fr));gap:12px;padding:0;list-style:none;display:grid}.card-link{background:var(--surface);border:1px solid var(--rule);height:100%;color:var(--ink);border-radius:14px;padding:16px 18px;text-decoration:none;transition:border-color .15s,transform .12s;display:block}.card-link:hover{border-color:var(--cobalt);transform:translateY(-1px)}.card-link strong{font-family:var(--font-display);letter-spacing:-.01em;font-size:1.08rem;display:block}.card-link span{color:var(--ink-2);margin-top:4px;font-size:.92rem;line-height:1.45;display:block}.search-dialog{background:0 0;border:0;width:min(680px,100vw - 24px);max-height:80vh;margin:10vh auto auto;padding:0;overflow:visible}.search-dialog::backdrop{backdrop-filter:blur(3px);background:#0b102080}.search-box{background:var(--surface);border:1px solid var(--rule);box-shadow:var(--shadow-2);border-radius:20px;flex-direction:column;max-height:80vh;display:flex;overflow:hidden}.display{background:var(--surface-2);border-bottom:1px solid var(--rule);align-items:center;gap:12px;min-height:64px;padding:0 16px;display:flex}.display svg{width:22px;height:22px;color:var(--ink-3);flex:none}.display input{background:0 0;border:0;outline:none;flex:1;min-width:0;height:62px;font-size:1.15rem}.display output{font-family:var(--font-mono);color:var(--cobalt-text);white-space:nowrap;text-overflow:ellipsis;max-width:45%;font-size:1.15rem;font-weight:700;overflow:hidden}.search-results{margin:0;padding:8px;list-style:none;overflow:auto}.search-results a{color:var(--ink);border-radius:12px;align-items:center;gap:12px;padding:10px 12px;text-decoration:none;display:flex}.search-results a .cat-icon{border-radius:10px;width:34px;height:34px}.search-results a b{font-weight:700;display:block}.search-results a small{color:var(--ink-3);-webkit-line-clamp:1;-webkit-box-orient:vertical;font-size:.85rem;line-height:1.35;display:-webkit-box;overflow:hidden}.search-results a:hover,.search-results a[aria-selected=true]{background:var(--cobalt-soft)}.search-empty{color:var(--ink-3);padding:18px 16px}.search-foot{border-top:1px solid var(--rule-2);color:var(--ink-3);gap:16px;padding:10px 16px;font-size:.8rem;display:flex}.search-foot kbd{border:1px solid var(--rule);border-radius:5px;padding:0 5px}.site-footer{color:#c7cfdf;background:#0c1426;margin-top:72px}.site-footer a{color:#e8edf7;text-decoration:none}.site-footer a:hover{color:#fff;text-decoration:underline}.footer-top{gap:36px;padding-block:56px 36px;display:grid}@media (width>=900px){.footer-top{grid-template-columns:1.1fr 2.4fr}}.footer-brand p{color:#9aa6bd;max-width:34ch;margin-top:14px;font-size:.95rem}.footer-cols{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:28px;display:grid}.footer-cols h2{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:#7f8ba3;margin-bottom:12px;font-size:.74rem;font-weight:600}.footer-cols ul{gap:8px;padding:0;font-size:.95rem;list-style:none;display:grid}.footer-bottom{color:#7f8ba3;border-top:1px solid #1f2a44;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;padding-block:18px 26px;font-size:.86rem;display:flex}.footer-bottom ul{flex-wrap:wrap;gap:6px 18px;padding:0;list-style:none;display:flex}}@layer pages{.hero{padding-block:clamp(40px,7vw,88px) clamp(36px,5vw,64px);position:relative;overflow:hidden}.hero:before{content:"";z-index:-1;background-image:linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);background-position:top;background-size:28px 28px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(80% 70% at 50% 30%,#000 30%,#0000 75%);mask-image:radial-gradient(80% 70% at 50% 30%,#000 30%,#0000 75%)}.hero__inner{text-align:center;max-width:900px;margin-inline:auto}.hero h1{letter-spacing:-.035em;font-size:clamp(2.4rem,1.4rem + 5vw,4.6rem);line-height:1.02}.hero h1 .eq-mark{display:inline-block;position:relative}.hero h1 .eq-mark:after{content:"";border-top:.045em solid var(--marigold);border-bottom:.045em solid var(--marigold);z-index:-1;height:.16em;position:absolute;bottom:-.04em;left:2%;right:2%}.hero .lede{max-width:60ch;color:var(--ink-2);margin:18px auto 0;font-size:clamp(1.05rem,1rem + .45vw,1.28rem)}.quick{text-align:left;background:var(--surface);border:1px solid var(--rule);max-width:760px;box-shadow:0 5px 0 var(--rule), var(--shadow-2);border-radius:22px;margin:34px auto 0;overflow:hidden}.quick .display{background:var(--surface);border-bottom:0;min-height:72px}.quick .display input{height:70px;font-size:clamp(1.05rem,1rem + .6vw,1.3rem)}.quick .display output{font-size:clamp(1.1rem,1rem + .8vw,1.45rem)}.quick .search-results{border-top:1px solid var(--rule-2);max-height:340px}.quick .search-results:empty{display:none}.quick-tips{flex-wrap:wrap;justify-content:center;gap:8px;margin-top:16px;display:flex}.quick-tips button{border:1px dashed var(--rule);font-family:var(--font-mono);color:var(--ink-2);background:0 0;border-radius:999px;padding:6px 12px;font-size:.85rem}.quick-tips button:hover{border-style:solid;border-color:var(--cobalt);color:var(--cobalt-text)}.stat-line{color:var(--ink-3);margin-top:22px;font-size:.92rem}.stat-line b{color:var(--ink);font-family:var(--font-mono)}.section-head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px 20px;margin-bottom:22px;display:flex}.section-head h2{font-size:clamp(1.6rem,1.2rem + 1.6vw,2.3rem)}.section-head p{color:var(--ink-2);max-width:60ch}.feature-band{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-xl);align-items:center;gap:28px;padding:clamp(20px,4vw,44px);display:grid}@media (width>=900px){.feature-band{grid-template-columns:1fr 1fr}}.feature-band h2{font-size:clamp(1.6rem,1.2rem + 1.6vw,2.3rem)}.feature-band p{color:var(--ink-2);margin-top:12px}.feature-band .chips{margin-top:20px}.mini-card{border:1px solid var(--rule);font-family:var(--font-mono);background:var(--paper);border-radius:16px;font-size:.9rem;overflow:hidden}.mini-card table{width:100%}.mini-card th,.mini-card td{border-bottom:1px solid var(--rule-2);text-align:left;padding:8px 12px}.mini-card th{letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);background:var(--surface-2);font-size:.72rem}.mini-card td:last-child,.mini-card th:last-child{text-align:right}.mini-card tfoot td{color:var(--cobalt-text);border-bottom:0;border-top:2px solid var(--marigold);font-weight:700}}@layer utilities{.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.muted{color:var(--ink-2)}.center{text-align:center}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}@media print{.site-header,.site-footer,.sidebar,.tape-tools,.calc-actions,.related,.skip-link{display:none!important}body{background:#fff}.tape{filter:none;border:1px solid #999;-webkit-mask:none;mask:none}}}@font-face{font-family:Bricolage;src:url(/fonts/bricolage-grotesque.woff2)format("woff2-variations"),url(/fonts/bricolage-grotesque.woff2)format("woff2");font-weight:200 800;font-style:normal;font-display:swap}@font-face{font-family:Atkinson Next;src:url(/fonts/atkinson-hyperlegible-next.woff2)format("woff2-variations"),url(/fonts/atkinson-hyperlegible-next.woff2)format("woff2");font-weight:200 800;font-style:normal;font-display:swap}@font-face{font-family:Atkinson Next;src:url(/fonts/atkinson-hyperlegible-next-italic.woff2)format("woff2-variations"),url(/fonts/atkinson-hyperlegible-next-italic.woff2)format("woff2");font-weight:200 800;font-style:italic;font-display:swap}@font-face{font-family:JetBrains Mono;src:url(/fonts/jetbrains-mono.woff2)format("woff2-variations"),url(/fonts/jetbrains-mono.woff2)format("woff2");font-weight:100 800;font-style:normal;font-display:swap}