/* Forge & Frame — site-2026.css
   4px spacing scale · fluid type · one copper brand · steel neutrals · no decorative motion */
@font-face{font-family:"Archivo";src:url("../assets/fonts/archivo-latin-wdth-normal.woff2") format("woff2");font-weight:100 900;font-stretch:62% 125%;font-style:normal;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("../assets/fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2");font-weight:100 800;font-style:normal;font-display:swap}
@font-face{font-family:"Archivo Fallback";src:local("Arial"),local("Arimo"),local("Liberation Sans"),local("Helvetica");size-adjust:100%;ascent-override:87.8%;descent-override:21%;line-gap-override:0%}
@font-face{font-family:"JetBrains Mono Fallback";src:local("Consolas"),local("Liberation Mono"),local("DejaVu Sans Mono"),local("Menlo");size-adjust:98%;ascent-override:102%;descent-override:30%;line-gap-override:0%}

:root{
  --s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:24px;--s6:32px;--s7:48px;--s8:64px;--s9:96px;--s10:128px;
  --gutter:clamp(20px,4vw,56px);--wrap:1280px;--wrap-narrow:880px;
  --sec:64px;
  --f-body:"Archivo","Archivo Fallback",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --f-mono:"JetBrains Mono","JetBrains Mono Fallback",ui-monospace,Consolas,monospace;
  --t-h1:clamp(2.75rem,1.4rem + 6vw,6rem);
  --t-h2:clamp(2.125rem,1.5rem + 2.6vw,3.75rem);
  --t-h3:clamp(1.25rem,1.15rem + .5vw,1.5rem);
  --t-lead:clamp(1.125rem,1.05rem + .35vw,1.3125rem);
  --t-body:1rem;--t-label:.875rem;
  --r-ctl:2px;
  --header:72px;--util:0px;
  /* light */
  --bg:#f2f0ec;--surface:#fbfaf8;--surface-2:#e8e5df;--line:#d6d2ca;--line-strong:#6e7178;
  --fg:#14161a;--muted:#4b5058;--brand:#8f4720;--brand-btn:#954b22;--brand-btn-h:#7a3c1a;--on-brand:#fff;
  --field:#fff;--danger:#a32525;--ok:#1d6b45;
  --draw-bg:#e8e5df;--draw-line:#14161a;
  --shadow:0 28px 40px -28px rgba(10,12,14,.4);
  color-scheme:light;
}
@media (min-width:768px){:root{--sec:96px}}
@media (min-width:1280px){:root{--sec:128px}}
[data-theme="dark"],.night{
  --bg:#0c0d0f;--surface:#14171b;--surface-2:#1b1f24;--line:#2a2f36;--line-strong:#7d838c;
  --fg:#f4efe6;--muted:#b8b3aa;--brand:#e39a62;--brand-btn:#a85a2a;--brand-btn-h:#8f4720;
  --field:#0a0b0d;--danger:#ff9d8f;--ok:#9fd6b2;
  --draw-bg:#101215;--draw-line:#f4efe6;
  --shadow:0 28px 40px -28px rgba(0,0,0,.8);
  color-scheme:dark;
}
/* global safety: no decorative motion anywhere */
*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:calc(var(--header) + var(--s5))}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--f-body);font-size:var(--t-body);line-height:1.6;font-weight:400;font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;min-height:100svh;display:flex;flex-direction:column}
main{flex:1}
img,picture,svg{display:block;max-inline-size:100%}
img{block-size:auto;border-radius:0}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:.22em}
::selection{background:var(--brand-btn);color:#fff}
h1,h2,h3,h4{margin:0;font-family:var(--f-body);font-weight:700;letter-spacing:-.01em;line-height:1.1}
h1,h2{font-stretch:78%;font-weight:800;text-transform:uppercase;letter-spacing:-.005em}
h1{font-size:var(--t-h1);line-height:.94}
h2{font-size:var(--t-h2);line-height:.98}
h3{font-size:var(--t-h3);line-height:1.2}
p{margin:0;max-inline-size:68ch}
ul,ol,dl,dd,figure{margin:0;padding:0}
.lead{font-size:var(--t-lead);line-height:1.55;color:var(--muted);max-inline-size:56ch}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.wrap{inline-size:100%;max-inline-size:calc(var(--wrap) + var(--gutter) * 2);margin-inline:auto;padding-inline:var(--gutter)}
.wrap--narrow{max-inline-size:calc(var(--wrap-narrow) + var(--gutter) * 2)}
.section{padding-block:var(--sec)}
.section--tight{padding-block:calc(var(--sec) * .6)}
.surface{background:var(--surface);border-block:1px solid var(--line)}
.night{background:var(--bg);color:var(--fg)}
.sr-only{position:absolute;inline-size:1px;block-size:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;inset-inline-start:var(--s4);inset-block-start:-100px;z-index:100;background:var(--brand-btn);color:#fff;padding:var(--s3) var(--s5);text-decoration:none}
.skip-link:focus{inset-block-start:var(--s2)}
.kicker{display:flex;align-items:center;gap:var(--s3);font-family:var(--f-mono);font-size:var(--t-label);letter-spacing:.1em;text-transform:uppercase;font-weight:500;color:var(--brand);line-height:1.4;margin-block-end:var(--s4)}
.kicker::before{content:"";inline-size:32px;block-size:2px;background:currentColor;flex:none}
.mono{font-family:var(--f-mono)}
.stock{font-size:var(--t-body);color:var(--muted);line-height:1.4}

/* utility bar */
.util{background:var(--surface-2);color:var(--fg);border-block-end:1px solid var(--line);display:none}
.util .wrap{display:flex;align-items:center;justify-content:space-between;gap:var(--s2) var(--s5);min-block-size:44px;flex-wrap:wrap;padding-block:var(--s1)}
.util p{max-inline-size:none;display:flex;align-items:center;gap:var(--s2)}
.util a{color:inherit;display:inline-flex;align-items:center;min-block-size:44px;min-inline-size:44px;text-decoration:underline}
.util a:hover{color:var(--brand);text-decoration:none}
.util .dot{inline-size:8px;block-size:8px;background:var(--brand);flex:none}
@media (min-width:768px){.util{display:block}}

/* header */
.site-header{position:sticky;inset-block-start:0;z-index:50;background:var(--bg);border-block-end:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:var(--s5);min-block-size:var(--header)}
.brand{white-space:nowrap;display:inline-flex;align-items:center;gap:var(--s3);font-stretch:80%;font-size:1.5rem;font-weight:800;letter-spacing:.01em;text-transform:uppercase;text-decoration:none;color:var(--fg);line-height:1;min-block-size:44px}
.brand svg{inline-size:32px;block-size:32px;color:var(--brand);flex:none}
.brand em{font-style:normal;color:var(--brand)}
.brand small{font-family:var(--f-mono);font-stretch:100%;font-size:var(--t-label);font-weight:500;letter-spacing:.1em;color:var(--muted);margin-inline-start:var(--s1)}
.nav{display:none;align-self:stretch}
.nav a.nl{display:inline-flex;align-items:center;min-block-size:44px;padding-inline:var(--s3);text-decoration:none;color:var(--fg);font-weight:500;white-space:nowrap}
.nav a.nl:hover{color:var(--brand);text-decoration:underline}
.nav [aria-current="page"]{color:var(--brand);text-decoration:underline;text-underline-offset:.4em}
.has-mega{position:static;display:flex;align-items:center;align-self:stretch}
.mega-btn{display:none;place-items:center;inline-size:44px;block-size:44px;margin-inline-start:-12px;padding:0;border:0;background:transparent;color:var(--muted);cursor:pointer}
.js .mega-btn.js-only{display:inline-grid}
.mega-btn:hover{color:var(--fg)}
.mega-btn svg{inline-size:14px;block-size:14px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.mega-btn[aria-expanded="true"]{color:var(--brand)}
html:not(.js) .has-mega>a.nl::after{content:"";inline-size:7px;block-size:7px;margin-inline-start:var(--s2);border-inline-end:1.5px solid currentColor;border-block-end:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px)}
/* mega panel: solid, full width, hangs from the header's bottom edge; scrolls inside itself on short screens */
.mega{display:none;position:absolute;inset-inline:0;inset-block-start:calc(100% + 1px);z-index:2;max-block-size:calc(100svh - var(--header) - var(--util));overflow-y:auto;overscroll-behavior:contain;background:var(--surface);color:var(--fg);border-block-end:1px solid var(--line-strong);box-shadow:var(--shadow)}
.has-mega.is-open>.mega{display:block}
html:not(.js) .has-mega:hover>.mega,html:not(.js) .has-mega:focus-within>.mega{display:block}
.mega-in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,320px);gap:var(--s8);inline-size:100%;max-inline-size:calc(var(--wrap) + var(--gutter)*2);margin-inline:auto;padding:var(--s5) var(--gutter) var(--s6)}
.mega-main{display:grid;align-content:start;gap:var(--s4);min-inline-size:0}
.mega-head{display:grid;gap:var(--s1);padding-block-end:var(--s4);border-block-end:1px solid var(--line-strong)}
.mega-k{font-family:var(--f-mono);font-size:var(--t-label);letter-spacing:.1em;text-transform:uppercase;font-weight:500;color:var(--brand);line-height:1.4}
.mega-sum{font-stretch:80%;font-weight:800;text-transform:uppercase;font-size:1.5rem;line-height:1.1;max-inline-size:60ch}
.mega-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s7)}
.mega-col{display:grid;align-content:start;gap:var(--s3);min-inline-size:0}
.mega-col h2{font-family:var(--f-mono);font-stretch:100%;text-transform:uppercase;font-size:var(--t-label);letter-spacing:.1em;font-weight:500;color:var(--muted);line-height:1.4}
.mega-list{list-style:none;margin:0;padding:0}
.mega-list a{display:grid;grid-template-columns:56px minmax(0,1fr);gap:var(--s4);align-items:center;min-block-size:64px;padding-block:var(--s2);border-block-end:1px solid var(--line);color:var(--fg);text-decoration:none}
.mega-list picture{display:block;inline-size:56px;block-size:56px;background:var(--surface-2)}
.mega-list img{display:block;inline-size:56px;block-size:56px;object-fit:cover;border-radius:0}
.mega-list .mt{display:grid;gap:var(--s1);min-inline-size:0}
.mega-list b{font-weight:700;font-size:1.125rem;line-height:1.2}
.mega-list small{color:var(--muted);font-size:1rem;line-height:1.3}
.mega-list a:hover b,.mega-list a:focus-visible b{color:var(--brand)}
.mega-list a:focus-visible,.mega-all:focus-visible,.mega-feat:focus-visible{outline-offset:-2px}
.mega-all{display:flex;align-items:center;justify-content:space-between;min-block-size:48px;padding-inline:var(--s4);border:1px solid var(--line-strong);color:var(--fg);font-weight:600;text-decoration:none}
.mega-all::after,.mega-go::after{content:"→"}
.mega-all:hover{border-color:var(--brand);color:var(--brand)}
.mega-feat{display:grid;align-content:start;gap:var(--s2);padding:var(--s4);background:var(--surface-2);border:1px solid var(--line-strong);color:var(--fg);text-decoration:none}
.mega-feat picture{display:block;margin-block-end:var(--s2)}
.mega-feat img{display:block;inline-size:100%;block-size:auto;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.mega-fk{font-family:var(--f-mono);font-size:var(--t-label);letter-spacing:.1em;text-transform:uppercase;font-weight:500;color:var(--muted)}
.mega-feat b{font-stretch:80%;font-weight:800;text-transform:uppercase;font-size:1.75rem;line-height:1.05}
.mega-feat small{color:var(--muted);font-size:1rem;line-height:1.45}
.mega-go{display:inline-flex;align-items:center;gap:var(--s2);min-block-size:44px;font-weight:600;color:var(--brand)}
.mega-feat:hover{border-color:var(--brand)}
.mega-feat:hover .mega-go{color:var(--fg)}
@media (max-width:1099.98px){.mega{display:none!important}}
.hdr-actions{display:flex;align-items:center;gap:var(--s2)}
.hdr-actions>.btn{display:none}
.icon-btn{display:inline-grid;place-items:center;inline-size:44px;block-size:44px;border:1px solid transparent;border-radius:var(--r-ctl);background:transparent;color:var(--fg);cursor:pointer;-webkit-appearance:none;appearance:none}
.icon-btn:hover{border-color:var(--line-strong)}
.icon-btn svg{inline-size:20px;block-size:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.theme-toggle .i-sun{display:none}
[data-theme="dark"] .theme-toggle .i-sun{display:block}
[data-theme="dark"] .theme-toggle .i-moon{display:none}
.m-menu{position:static}
.m-menu summary{list-style:none;cursor:pointer}
.m-menu summary::-webkit-details-marker{display:none}
.m-menu .i-close{display:none}
.m-menu[open] .i-open{display:none}
.m-menu[open] .i-close{display:block}
.m-panel{position:absolute;inset:calc(100% + 1px) 0 auto 0;z-index:2;max-block-size:calc(100svh - var(--header) - var(--util) - 1px);overflow:auto;overscroll-behavior:contain;background:var(--bg);color:var(--fg);border-block-end:1px solid var(--line);padding:var(--s4) var(--gutter) var(--s6)}
.m-panel a{display:flex;align-items:center;justify-content:space-between;min-block-size:52px;border-block-end:1px solid var(--line);font-stretch:80%;font-weight:800;text-transform:uppercase;font-size:1.5rem;text-decoration:none;color:var(--fg)}
.m-panel a.sub{font-stretch:100%;font-weight:400;text-transform:none;font-size:1rem;min-block-size:44px;padding-inline-start:var(--s4);color:var(--muted)}
.m-panel a[aria-current="page"]{color:var(--brand)}
.m-panel .btn{margin-block-start:var(--s5);inline-size:100%;font-stretch:100%;text-transform:none;font-weight:600;font-size:1rem;justify-content:center;color:#fff}
@media (min-width:1100px){
  .nav{display:flex;align-items:center;gap:var(--s1)}
  .m-menu{display:none}
  .hdr-actions>.btn{display:inline-flex}
}
@media (min-width:1100px) and (max-width:1359.98px){.site-header .wrap{gap:var(--s3)}.nav a.nl{padding-inline:var(--s2)}.brand small{display:none}.hdr-actions .btn{padding-inline:var(--s4)}}
@media (max-width:559.98px){.site-header .wrap{gap:var(--s2)}.brand small{display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--s2);min-block-size:48px;padding:var(--s3) var(--s5);border:1px solid var(--brand);border-radius:var(--r-ctl);background:var(--brand-btn);color:var(--on-brand);font:600 1rem/1.2 var(--f-body);text-decoration:none;cursor:pointer;-webkit-appearance:none;appearance:none;white-space:nowrap}
.btn:hover{background:var(--brand-btn-h);color:#fff}
.btn--ghost{background:transparent;color:var(--fg);border-color:var(--line-strong)}
.btn--ghost:hover{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn--sm{min-block-size:44px;padding:var(--s2) var(--s4)}
.btn[disabled]{background:var(--surface-2);color:var(--muted);border-color:var(--line);cursor:not-allowed}
.btn-row{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s3) var(--s5)}
.tlink{display:inline-flex;align-items:center;gap:var(--s2);min-block-size:44px;color:var(--brand);font-weight:600;text-decoration:underline;text-underline-offset:.28em}
.tlink:hover{text-decoration:none;color:var(--fg)}
.tlink::after{content:"→"}
.text-btn{display:inline-flex;align-items:center;min-block-size:44px;padding:0 var(--s2);border:0;background:none;color:var(--brand);font:600 1rem var(--f-body);text-decoration:underline;cursor:pointer}
.text-btn:hover{color:var(--fg)}

/* images */
.ph{margin:0}
.ph img{inline-size:100%;block-size:auto;border-radius:0}
.ph--43 img{aspect-ratio:4/3;object-fit:cover}
.ph--45 img{aspect-ratio:4/5;object-fit:cover}
.ph--169 img{aspect-ratio:16/9;object-fit:cover}
.ph--21 img{aspect-ratio:21/9;object-fit:cover}
.ph figcaption{font-size:var(--t-body);color:var(--muted);line-height:1.4;margin-block-start:var(--s2)}
.img-fade{-webkit-mask-image:linear-gradient(to right,transparent 0,rgba(0,0,0,.4) 7%,#000 24%),linear-gradient(to bottom,#000 70%,transparent 100%);-webkit-mask-composite:source-in;mask-image:linear-gradient(to right,transparent 0,rgba(0,0,0,.4) 7%,#000 24%),linear-gradient(to bottom,#000 70%,transparent 100%);mask-composite:intersect}
.img-fade--r{-webkit-mask-image:linear-gradient(to left,transparent 0,rgba(0,0,0,.4) 7%,#000 24%),linear-gradient(to bottom,#000 80%,transparent 100%);mask-image:linear-gradient(to left,transparent 0,rgba(0,0,0,.4) 7%,#000 24%),linear-gradient(to bottom,#000 80%,transparent 100%)}
@media (max-width:899px){.img-fade,.img-fade--r{-webkit-mask-image:linear-gradient(to bottom,#000 65%,transparent 100%);mask-image:linear-gradient(to bottom,#000 65%,transparent 100%)}}
@media (forced-colors:active){.img-fade,.img-fade--r{-webkit-mask-image:none;mask-image:none}}

/* home hero (always dark) */
.hero{padding-block:var(--s7) var(--s8);overflow:clip;border-block-end:1px solid var(--line)}
.hero__grid{display:grid;gap:var(--s7);align-items:center}
.hero h1{margin-block-end:var(--s5)}
.hero h1 span{color:var(--brand)}
.hero .lead{margin-block-end:var(--s6)}
.hero__media{position:relative;margin-inline:calc(var(--gutter) * -1)}
.hero__media .ph img{aspect-ratio:3/2;object-fit:cover}
.plate{position:relative;display:grid;gap:var(--s1);margin:calc(var(--s6) * -1) var(--gutter) 0;padding:var(--s3) var(--s4);background:var(--surface);border:1px solid var(--line-strong);max-inline-size:340px;font-family:var(--f-mono);font-size:var(--t-label);line-height:1.4;letter-spacing:.04em;color:var(--muted)}
.plate b{color:var(--fg);font-stretch:80%;font-family:var(--f-body);font-weight:800;text-transform:uppercase;font-size:1.0625rem;letter-spacing:.02em}
.plate::before,.plate::after{content:"";position:absolute;inline-size:10px;block-size:10px;border:2px solid var(--brand)}
.plate::before{inset-block-start:-2px;inset-inline-start:-2px;border-inline-end:0;border-block-end:0}
.plate::after{inset-block-end:-2px;inset-inline-end:-2px;border-inline-start:0;border-block-start:0}
@media (min-width:900px){
  .hero{padding-block:var(--s8) var(--s9)}
  .hero__grid{grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:var(--s6)}
  .hero__media{margin-inline:0 calc(var(--gutter) * -1)}
  .hero .plate{position:absolute;inset-inline-start:var(--s6);inset-block-end:var(--s6);margin:0}
}
.idx-row{display:grid;margin-block-start:var(--s7);border-block-start:1px solid var(--line-strong);list-style:none;padding:0}
.idx-row li{border-block-end:1px solid var(--line)}
.idx-row a{display:flex;align-items:baseline;gap:var(--s4);min-block-size:56px;padding-block:var(--s3);text-decoration:none;color:var(--fg);font-weight:600}
.idx-row a:hover{color:var(--brand)}
.idx-row .n{font-family:var(--f-mono);font-size:var(--t-label);color:var(--brand);font-weight:500;min-inline-size:2ch}
@media (min-width:768px){.idx-row{grid-template-columns:repeat(3,1fr);border-block-end:0}.idx-row li{border-block-end:0;border-inline-end:1px solid var(--line);padding-inline:var(--s5)}.idx-row li:first-child{padding-inline-start:0}.idx-row li:last-child{border-inline-end:0}}

/* section heads */
.shead{display:grid;gap:var(--s4);margin-block-end:var(--s7);max-inline-size:760px}
.shead--split{max-inline-size:none}
@media (min-width:900px){.shead--split{grid-template-columns:minmax(0,7fr) minmax(0,5fr);align-items:end;gap:var(--s8)}}

/* split blocks */
.split{display:grid;gap:var(--s7);align-items:center}
.split .b>*+*{margin-block-start:var(--s4)}
.split .b h2{margin-block-end:var(--s2)}
@media (min-width:900px){.split{grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:var(--s9)}.split--r{grid-template-columns:minmax(0,6fr) minmax(0,5fr)}.split--top{align-items:start}.split--top>.a{position:sticky;inset-block-start:calc(var(--header) + var(--s5))}}

/* capability index */
.caps{list-style:none;padding:0;border-block-start:1px solid var(--line-strong)}
.cap{border-block-end:1px solid var(--line)}
.cap a{display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:var(--s2) var(--s4);align-items:start;padding-block:var(--s5);text-decoration:none;color:var(--fg)}
.cap .n{font-family:var(--f-mono);font-size:var(--t-label);color:var(--brand);font-weight:500;padding-block-start:var(--s2)}
.cap h3{font-stretch:80%;font-weight:800;text-transform:uppercase;font-size:1.75rem;line-height:1.05}
.cap p{grid-column:2;color:var(--muted)}
.cap .go{grid-column:3;grid-row:1;color:var(--brand);font-weight:600;align-self:center}
.cap a:hover h3,.cap a:focus-visible h3{color:var(--brand)}

/* sheets (selected work) */
.sheets{display:grid;gap:var(--s5)}
@media (min-width:900px){.sheets{grid-template-columns:repeat(3,minmax(0,1fr))}}
.sheet{display:grid;grid-template-rows:auto 1fr;background:var(--surface);border:1px solid var(--line-strong);color:var(--fg);text-decoration:none}
a.sheet:hover{border-color:var(--brand)}
a.sheet:hover h3{color:var(--brand)}
.draw{position:relative;background-color:var(--draw-bg);background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:20px 20px;border-block-end:1px solid var(--line-strong);color:var(--draw-line)}
.draw svg{inline-size:100%;block-size:auto;aspect-ratio:10/7}
.draw__bar{display:flex;justify-content:space-between;align-items:center;gap:var(--s3);padding:var(--s3) var(--s3) 0}
.draw .tag{padding:var(--s1) var(--s2);background:var(--surface);border:1px solid var(--line-strong);font-family:var(--f-mono);font-size:var(--t-label);letter-spacing:.06em;text-transform:uppercase;color:var(--fg)}
.draw .tag--r{color:var(--brand)}
.sheet__body{display:flex;flex-direction:column;gap:var(--s3);padding:var(--s5)}
.sheet__body .spec{margin-block-start:auto}
.sheet__body p{color:var(--muted)}
.spec{display:grid;gap:0;border-block-start:1px solid var(--line)}
.spec>div{display:grid;grid-template-columns:110px minmax(0,1fr);gap:var(--s3);padding-block:var(--s2);border-block-end:1px solid var(--line)}
.spec dt{font-family:var(--f-mono);font-size:var(--t-label);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding-block-start:var(--s1)}
.spec dd{font-weight:500}
.sheet__go{display:inline-flex;align-items:center;min-block-size:44px;gap:var(--s2);font-weight:600;color:var(--brand)}
.sheet__go::after{content:"→"}
.dr-s{stroke:currentColor;fill:none;stroke-width:2;stroke-linejoin:round;stroke-linecap:round}
.dr-t{stroke:currentColor;fill:none;stroke-width:1;stroke-dasharray:6 5}
.dr-b{stroke:var(--brand);fill:none;stroke-width:2}
.dr-f{fill:var(--brand)}
.dr-h{stroke:currentColor;stroke-width:1;opacity:.5}
.dr-x{font-family:var(--f-mono);font-size:19px;letter-spacing:.04em;fill:currentColor}
.dr-x--b{fill:var(--brand)}

/* materials strip */
.mat-lists{display:grid;gap:var(--s6);margin-block-start:var(--s5)}
@media (min-width:640px){.mat-lists{grid-template-columns:repeat(2,minmax(0,1fr))}}
.mat-lists h3{font-family:var(--f-mono);font-stretch:100%;font-size:var(--t-label);letter-spacing:.1em;text-transform:uppercase;font-weight:500;color:var(--brand);margin-block-end:var(--s2)}
.tick{list-style:none;padding:0}
.tick li{display:flex;align-items:center;gap:var(--s3);min-block-size:44px;padding-block:var(--s1);border-block-end:1px solid var(--line);font-weight:500}
.tick li::before{content:"";inline-size:8px;block-size:8px;background:var(--brand);flex:none}

/* steps */
.steps{display:grid;gap:0;list-style:none;padding:0;counter-reset:st;border-block-start:1px solid var(--line-strong)}
.steps li{display:grid;gap:var(--s3);padding:var(--s5) 0;border-block-end:1px solid var(--line);counter-increment:st}
.steps li::before{content:"0" counter(st);font-family:var(--f-mono);font-size:2.5rem;line-height:1;font-weight:500;color:var(--brand)}
.steps h3{font-stretch:80%;font-weight:800;text-transform:uppercase;font-size:1.5rem}
.steps p{color:var(--muted)}
@media (min-width:900px){.steps{grid-template-columns:repeat(3,1fr);border-block-end:0}.steps li{border-block-end:0;border-inline-end:1px solid var(--line);padding:var(--s5) var(--s5) var(--s5) var(--s5)}.steps li:first-child{padding-inline-start:0}.steps li:last-child{border-inline-end:0}}

/* page head (inner) */
.page-head{padding-block:var(--s7) var(--s7);border-block-end:1px solid var(--line);background:var(--surface)}
.page-head h1{font-size:clamp(2.5rem,1.4rem + 5vw,5rem);margin-block:var(--s4) var(--s5);max-inline-size:18ch}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:0 var(--s3);list-style:none;padding:0;font-family:var(--f-mono);font-size:var(--t-label);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-inline-end:var(--s3);color:var(--line-strong)}
.crumbs a{display:inline-flex;align-items:center;min-block-size:44px;min-inline-size:44px;color:var(--muted);text-decoration:underline}
.crumbs a:hover{color:var(--brand)}
.page-head .btn-row{margin-block-start:var(--s6)}
@media (min-width:900px){.page-head{padding-block:var(--s8)}}

/* prose */
.prose>*+*{margin-block-start:var(--s4)}
.prose h2{font-size:var(--t-h3);font-stretch:100%;text-transform:none;font-weight:700;letter-spacing:-.01em;margin-block-start:var(--s7);line-height:1.2}
.prose p{color:var(--muted)}
.prose strong{color:var(--fg)}

/* capability detail rows (capabilities page) */
.layout-side{display:grid;gap:var(--s7)}
@media (min-width:1024px){.layout-side{grid-template-columns:240px minmax(0,1fr);gap:var(--s9);align-items:start}.layout-side>aside{position:sticky;inset-block-start:calc(var(--header) + var(--s5))}}
.side-nav{list-style:none;padding:0;border-block-start:1px solid var(--line-strong)}
.side-nav a{display:flex;align-items:center;gap:var(--s3);min-block-size:44px;border-block-end:1px solid var(--line);text-decoration:none;color:var(--fg);font-weight:500}
.side-nav a:hover{color:var(--brand)}
.side-nav .n{font-family:var(--f-mono);font-size:var(--t-label);color:var(--brand)}
@media (max-width:1023px){.side-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:var(--s5)}}
.capd{display:grid;gap:var(--s6);padding-block:var(--s8);border-block-end:1px solid var(--line)}
.capd:first-child{padding-block-start:0}
.capd .no{font-family:var(--f-mono);font-size:var(--t-label);letter-spacing:.1em;color:var(--brand);font-weight:500}
.capd h2{font-size:clamp(2rem,1.5rem + 2vw,3rem);margin-block:var(--s2) var(--s4)}
.capd .body>*+*{margin-block-start:var(--s4)}
.capd .body p{color:var(--muted)}
.covers{list-style:none;padding:0;border-block-start:1px solid var(--line)}
.covers li{display:flex;gap:var(--s3);align-items:center;min-block-size:44px;padding-block:var(--s1);border-block-end:1px solid var(--line);font-weight:500}
.covers li::before{content:"";inline-size:8px;block-size:8px;background:var(--brand);flex:none}
@media (min-width:768px){.capd{grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:var(--s8);align-items:start}.capd:nth-child(even) .ph{order:2}}

/* work page + sheet detail */
.table-wrap{overflow-x:auto}
.cmp{inline-size:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--line-strong)}
.cmp th,.cmp td{padding:var(--s3) var(--s4);text-align:start;vertical-align:top;border-block-end:1px solid var(--line);font-weight:400}
.cmp thead th{font-family:var(--f-mono);font-size:var(--t-label);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:500;border-block-end:1px solid var(--line-strong)}
.cmp tbody th{font-weight:700}
.cmp a{display:inline-flex;align-items:center;min-block-size:44px;color:var(--brand);font-weight:600}
.notice{padding:var(--s4) var(--s5);border-inline-start:3px solid var(--brand);background:var(--surface);color:var(--fg)}
.notice p{max-inline-size:none}
.sheet-hero{display:grid;gap:var(--s6)}
@media (min-width:900px){.sheet-hero{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:var(--s8);align-items:start}}
.sheet-hero .draw{border:1px solid var(--line-strong)}
.sheet-hero .spec{margin-block-start:var(--s5)}
.pn{display:grid;gap:var(--s4);margin-block-start:var(--s8);padding-block-start:var(--s6);border-block-start:1px solid var(--line-strong)}
@media (min-width:640px){.pn{grid-template-columns:1fr 1fr}.pn a:last-child{text-align:end;justify-items:end}}
.pn a{display:grid;gap:var(--s1);padding:var(--s4) var(--s5);border:1px solid var(--line-strong);text-decoration:none;color:var(--fg);min-block-size:44px}
.pn a:hover{border-color:var(--brand)}
.pn small{font-family:var(--f-mono);font-size:var(--t-label);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.pn b{font-stretch:80%;font-weight:800;text-transform:uppercase;font-size:1.375rem}
.pn a:hover b{color:var(--brand)}
.dlist{display:grid;gap:var(--s4)}
.dlist>div{display:grid;gap:var(--s1);padding-block-end:var(--s4);border-block-end:1px solid var(--line)}
.dlist dt{font-weight:700}
.dlist dd{color:var(--muted)}

/* choice (checkbox / radio) */
.check{display:flex;align-items:center;gap:var(--s3);min-block-size:44px;cursor:pointer;line-height:1.4}
.check input{inline-size:20px;block-size:20px;accent-color:var(--brand-btn);margin:0;flex:none}

/* forms */
.form{display:grid;gap:var(--s5);align-content:start}
.form-grid{display:grid;gap:var(--s5)}
@media (min-width:640px){.form-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}.form-grid .span-2{grid-column:1/-1}}
.field{display:grid;gap:var(--s2);align-content:start}
.field>label,.field>.legend,legend{font-size:var(--t-body);font-weight:600;color:var(--fg)}
.req,.opt{font-family:var(--f-mono);font-size:var(--t-label);font-weight:400;color:var(--muted);margin-inline-start:var(--s2);letter-spacing:.04em}
fieldset{border:0;padding:0;margin:0;min-inline-size:0}
legend{padding:0;margin-block-end:var(--s2)}
.hint{color:var(--muted);font-size:var(--t-body);line-height:1.45}
.err{display:none;color:var(--danger);font-size:var(--t-body);font-weight:600}
.err:not(:empty){display:block}
input[type=text],input[type=email],input[type=tel],input[type=date],input[type=number],select,textarea{inline-size:100%;min-block-size:48px;padding:var(--s3) var(--s4);font:400 1rem/1.4 var(--f-body);color:var(--fg);background:var(--field);border:1px solid var(--line-strong);border-radius:var(--r-ctl);-webkit-appearance:none;appearance:none;font-variant-numeric:tabular-nums}
textarea{min-block-size:160px;resize:vertical;line-height:1.5}
::placeholder{color:var(--muted);opacity:1}
input:hover,select:hover,textarea:hover{border-color:var(--fg)}
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-color:var(--brand)}
[aria-invalid="true"]{border-color:var(--danger)!important}
select{padding-inline-end:var(--s8);background-image:linear-gradient(45deg,transparent 50%,currentColor 50%),linear-gradient(135deg,currentColor 50%,transparent 50%);background-position:calc(100% - 24px) 50%,calc(100% - 18px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat;cursor:pointer}
select.is-placeholder{color:var(--muted)}
select option{background:var(--surface);color:var(--fg)}
@supports (appearance:base-select){
  select,::picker(select){appearance:base-select}
  select::picker-icon{display:none}
  select{background-image:none;padding-inline-end:var(--s4);display:flex;align-items:center;justify-content:space-between}
  select::after{content:"";inline-size:8px;block-size:8px;border-inline-end:1.5px solid currentColor;border-block-end:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);flex:none}
  ::picker(select){background:var(--surface);color:var(--fg);border:1px solid var(--line-strong);border-radius:var(--r-ctl);padding:var(--s1);margin-block:var(--s1)}
  option{min-block-size:44px;padding:var(--s2) var(--s3);display:flex;align-items:center;border-radius:0}
  option:hover,option:focus-visible{background:var(--surface-2)}
  option:checked{background:var(--brand-btn);color:#fff}
  option::checkmark{display:none}
}
.file-row{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s3) var(--s4)}
.file-name{color:var(--muted);overflow-wrap:anywhere}
.seg{display:flex;flex-wrap:wrap;gap:var(--s2)}
.seg label{position:relative}
.seg input{position:absolute;inset:0;inline-size:100%;block-size:100%;opacity:0;margin:0;cursor:pointer}
.seg span{display:inline-flex;align-items:center;justify-content:center;min-block-size:44px;min-inline-size:44px;padding:var(--s2) var(--s4);border:1px solid var(--line-strong);border-radius:var(--r-ctl);font-weight:600;background:var(--field);color:var(--fg)}
.seg input:hover+span{border-color:var(--fg)}
.seg input:checked+span{background:var(--brand-btn);border-color:var(--brand-btn);color:#fff}
.seg input:focus-visible+span{outline:2px solid var(--brand);outline-offset:2px}
.form-card{padding:var(--s6);background:var(--surface);border:1px solid var(--line-strong);position:relative}
.form-card::before,.form-card::after{content:"";position:absolute;inline-size:14px;block-size:14px;border:2px solid var(--brand)}
.form-card::before{inset-block-start:-2px;inset-inline-start:-2px;border-inline-end:0;border-block-end:0}
.form-card::after{inset-block-end:-2px;inset-inline-end:-2px;border-inline-start:0;border-block-start:0}
@media (max-width:479px){.form-card{padding:var(--s5)}}
.panel-k{font-family:var(--f-mono);font-size:var(--t-label);letter-spacing:.1em;text-transform:uppercase;color:var(--brand);margin-block-end:var(--s4);font-weight:500}
.form-layout{display:grid;gap:var(--s7)}
@media (min-width:1024px){.form-layout{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:var(--s9);align-items:start}.form-layout aside{position:sticky;inset-block-start:calc(var(--header) + var(--s5))}}
.form-layout aside>*+*{margin-block-start:var(--s5)}
.form-note{padding:var(--s3) var(--s4);border-inline-start:3px solid var(--brand);background:var(--surface-2);color:var(--fg);font-size:var(--t-body);max-inline-size:none}
.summary{display:grid;gap:var(--s2)}
.summary dl{display:grid;gap:var(--s2)}
.summary dl>div{display:grid;grid-template-columns:130px minmax(0,1fr);gap:var(--s3);padding-block-end:var(--s2);border-block-end:1px solid var(--line)}
.summary dt{color:var(--muted);font-family:var(--f-mono);font-size:var(--t-label);letter-spacing:.06em;text-transform:uppercase;padding-block-start:var(--s1)}
.summary dd{font-weight:500;overflow-wrap:anywhere}
.pre{white-space:pre-wrap}
.confirm{display:grid;gap:var(--s4);outline:none}
.confirm h2,.confirm h3{font-stretch:80%;font-weight:800;text-transform:uppercase;font-size:var(--t-h3)}
.status{min-block-size:1.5em}
.status[data-ok]{color:var(--ok);font-weight:600}
.brief-grid{display:grid;gap:var(--s7)}
@media (min-width:1024px){.brief-grid{grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:var(--s8);align-items:start}.brief-grid .out{position:sticky;inset-block-start:calc(var(--header) + var(--s5))}}
.out pre{margin:0;padding:var(--s5);background:var(--field);border:1px solid var(--line-strong);font:400 1rem/1.6 var(--f-mono);white-space:pre-wrap;overflow-wrap:anywhere;color:var(--fg);min-block-size:200px}

/* footer */
.site-footer{margin-block-start:auto;background:var(--surface);color:var(--fg);border-block-start:1px solid var(--line)}
.f-grid{display:grid;gap:var(--s6);padding-block:var(--s7) var(--s6)}
.f-brand p{color:var(--muted);max-inline-size:36ch;margin-block-start:var(--s3)}
.f-col h2{font-family:var(--f-mono);font-stretch:100%;text-transform:uppercase;font-size:var(--t-label);letter-spacing:.1em;font-weight:500;color:var(--muted);margin-block-end:var(--s1);line-height:1.4}
.f-col ul{list-style:none;padding:0}
.f-col a:not(.btn){display:inline-flex;align-items:center;min-block-size:44px;min-inline-size:44px;color:var(--fg);text-decoration:none}
.f-col a:not(.btn):hover{color:var(--brand);text-decoration:underline}
.f-brand .brand{white-space:nowrap}.f-brand .brand small{display:none}
.f-col--cta p{color:var(--muted);margin-block-end:var(--s3)}
@media (max-width:1023px){.f-links ul{display:flex;flex-wrap:wrap;gap:0 var(--s5)}}
@media (max-width:639px){.f-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s4) var(--s5)}.f-brand,.f-links,.f-col--cta{grid-column:1/-1}}
@media (min-width:640px){.f-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.f-brand,.f-col--cta{grid-column:1/-1}}
@media (min-width:1024px){.f-grid{grid-template-columns:minmax(0,1.4fr) minmax(0,1.9fr) minmax(0,1fr) minmax(0,1.2fr);gap:var(--s7)}.f-caps ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:var(--s5)}.f-brand,.f-col--cta{grid-column:auto}}
.f-bar{border-block-start:1px solid var(--line);color:var(--muted)}
.f-bar .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--s1) var(--s6);padding-block:var(--s2)}
.f-bar p{max-inline-size:78ch;line-height:1.5}
.f-bar a{display:inline-flex;align-items:center;min-block-size:44px;min-inline-size:44px;color:var(--muted)}
.f-bar a:hover{color:var(--fg)}
.f-bar .links{display:flex;gap:var(--s5)}

/* 404 + kit */
.nf{min-block-size:60svh;display:grid;align-content:center;gap:var(--s5);padding-block:var(--s9)}
.nf h1{max-inline-size:14ch}
.kit>section{padding-block:var(--s7);border-block-end:1px solid var(--line)}
.kit h2{font-size:var(--t-h3);font-stretch:100%;text-transform:none;margin-block-end:var(--s5)}
.credits{display:grid;gap:0;list-style:none;padding:0;border-block-start:1px solid var(--line-strong)}
.credits li{display:grid;gap:var(--s1);padding-block:var(--s3);border-block-end:1px solid var(--line)}
@media (min-width:900px){.credits li{grid-template-columns:200px 1fr 1fr;gap:var(--s5)}}
.credits a{color:var(--brand)}
.credits .thumb{display:none}

.js-only{display:none}
.js .js-only{display:block}
[hidden]{display:none!important}
@media print{.site-header,.site-footer,.util,.mega{display:none}body{background:#fff;color:#000}}
.js .btn.js-only{display:inline-flex}
@media (max-width:379px){.brand{font-size:1.25rem;gap:var(--s2)}.brand svg{inline-size:28px;block-size:28px}}
.mega-col:first-child .mega-list small{display:none}