/* Layout concept: the page is a revision-controlled record sheet. Sections are sheets with a
   title-block strip; facts are ledger rows in mono; drawings use the shop's own colour code
   (LD slot = blue, bore = orange, dowel = green, banded edge = heavy line). */
:root{
  --paper:#f4f0e8; --paper-2:#ebe5d7; --sheet:#faf8f3;
  --ink:#1a1a1a; --ink-2:#3a3832; --muted:#6b6558;
  --rule:rgba(26,26,26,.14); --rule-2:rgba(26,26,26,.32);
  --accent:#d64215; --accent-ink:#b8360f;
  --slot:#2f5d7c; --dowel:#3d7a4f; --ok:#3d7a4f; --warn:#a86a00;
  --node:#1a1a1a; --edge:rgba(26,26,26,.3);
  --f-display:'Fraunces',Georgia,'Times New Roman',serif;
  --f-body:'Inter Tight',system-ui,-apple-system,'Segoe UI',sans-serif;
  --f-mono:'JetBrains Mono',ui-monospace,Menlo,Consolas,monospace;
  --f-mark:'Space Grotesk','Inter Tight',system-ui,sans-serif;
  --maxw:1180px; --gut:clamp(16px,4vw,40px);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#14130f; --paper-2:#1d1b16; --sheet:#1a1914;
  --ink:#f3f1eb; --ink-2:#d6d2c7; --muted:#a39c8c;
  --rule:rgba(243,241,235,.13); --rule-2:rgba(243,241,235,.3);
  --accent:#ec6a3c; --accent-ink:#f08257;
  --slot:#7fb0d4; --dowel:#80c193; --ok:#80c193; --warn:#e0b050;
  --node:#f3f1eb; --edge:rgba(243,241,235,.4); color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#14130f; --paper-2:#1d1b16; --sheet:#1a1914;
  --ink:#f3f1eb; --ink-2:#d6d2c7; --muted:#a39c8c;
  --rule:rgba(243,241,235,.13); --rule-2:rgba(243,241,235,.3);
  --accent:#ec6a3c; --accent-ink:#f08257;
  --slot:#7fb0d4; --dowel:#80c193; --ok:#80c193; --warn:#e0b050;
  --node:#f3f1eb; --edge:rgba(243,241,235,.4); color-scheme:dark}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
h1,h2,h3{font-family:var(--f-display);font-weight:500;letter-spacing:-.015em;line-height:1.08;margin:0;text-wrap:balance}
h1{font-size:clamp(2.5rem,6.4vw,5.1rem)}
h2{font-size:clamp(1.9rem,3.8vw,3rem)}
h3{font-size:1.3rem;line-height:1.25;font-weight:500}
p{margin:0}
.mono{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.04em}
.label{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gut)}
.lede{font-size:1.15rem;color:var(--ink-2);max-width:62ch}
.prose{max-width:62ch;color:var(--ink-2)}
.prose p+p{margin-top:.9em}
em.hl{font-style:normal;color:var(--accent-ink)}

/* nav */
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)}
header.top .wrap{display:flex;align-items:center;gap:24px;min-height:60px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand svg{width:34px;height:auto;display:block}
.brand b{font:700 1.3rem/1 var(--f-mark);letter-spacing:-.02em}
nav.links{display:flex;gap:22px;margin-left:auto;flex-wrap:wrap}
nav.links a{text-decoration:none;font-size:.92rem;color:var(--ink-2);padding:6px 0}
nav.links a:hover{color:var(--accent-ink)}
.btn{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 18px;border:1px solid var(--ink);border-radius:999px;text-decoration:none;font-weight:500;font-size:.95rem;background:transparent;color:var(--ink);cursor:pointer;font-family:var(--f-body)}
.btn.solid{background:var(--ink);color:var(--paper)}
.btn.solid:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn:hover{border-color:var(--accent);color:var(--accent-ink)}
@media (max-width:760px){nav.links{display:none}}

/* hero */
.hero{padding-block:clamp(48px,8vw,96px) 40px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(28px,5vw,64px);align-items:start}
.hero h1 .ac{color:var(--accent)}
.hero .lede{margin-top:24px}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.kicker{display:flex;gap:14px;align-items:center;margin-bottom:22px;flex-wrap:wrap}
.kicker .dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}}

/* record card (hero visual) */
.record{background:var(--sheet);border:1px solid var(--rule-2);font-family:var(--f-mono);font-size:.8rem;min-width:0}
.record .rh{display:flex;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--rule-2);flex-wrap:wrap}
.record .rh b{font-family:var(--f-body);font-size:1rem;font-weight:600;letter-spacing:0}
.record .rows{display:grid;grid-template-columns:auto minmax(0,1fr) auto;column-gap:14px}
.record .rows>div{padding:7px 0;border-bottom:1px dashed var(--rule)}
.record .rows>div:nth-child(3n+1){padding-left:16px;color:var(--muted)}
.record .rows>div:nth-child(3n){padding-right:16px;text-align:right;color:var(--muted)}
.record .src{font-size:.68rem;letter-spacing:.06em;text-transform:uppercase}
.record .rf{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--rule-2)}
.record .rf>div{padding:8px 12px;border-right:1px solid var(--rule)}
.record .rf>div:last-child{border-right:0}
.record .rf span{display:block;font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.record .log{padding:10px 16px 14px;border-top:1px solid var(--rule-2);display:grid;gap:6px}
.record .log div{display:grid;grid-template-columns:7.5em minmax(0,1fr);gap:10px}
.record .log time{color:var(--muted)}
.tag{display:inline-block;padding:1px 7px;border:1px solid currentColor;border-radius:3px;font-size:.66rem;letter-spacing:.08em;text-transform:uppercase}
.tag.ok{color:var(--ok)} .tag.ch{color:var(--accent-ink)} .tag.wn{color:var(--warn)}

/* sheet sections */
section.sheet{padding-block:clamp(64px,9vw,112px);border-top:1px solid var(--rule)}
section.alt{background:var(--paper-2)}
.sheet-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,72px);align-items:end;margin-bottom:clamp(36px,5vw,56px)}
.sheet-head .label{margin-bottom:16px;display:block}
@media (max-width:860px){.sheet-head{grid-template-columns:1fr}}

/* four properties */
.props{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:2px solid var(--ink)}
.props>div{padding:22px 22px 26px 0;border-right:1px solid var(--rule);display:grid;gap:10px;align-content:start}
.props>div+div{padding-left:22px}
.props>div:last-child{border-right:0}
.props h3{font-size:1.2rem}
.props p{color:var(--ink-2);font-size:.95rem}
@media (max-width:900px){.props{grid-template-columns:repeat(2,minmax(0,1fr))}.props>div:nth-child(2n){border-right:0}.props>div:nth-child(3){padding-left:0}.props>div:nth-child(n+3){border-top:1px solid var(--rule)}}
@media (max-width:520px){.props{grid-template-columns:1fr}.props>div{border-right:0;padding-left:0!important}.props>div+div{border-top:1px solid var(--rule)}}

/* pipeline */
.pipe{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(20px,4vw,48px);align-items:start}
.stages{list-style:none;margin:0;padding:0;display:grid;border-top:2px solid var(--ink)}
.stages button{all:unset;box-sizing:border-box;width:100%;display:grid;grid-template-columns:2.4em minmax(0,1fr) auto;gap:12px;align-items:baseline;padding:16px 4px;border-bottom:1px solid var(--rule);cursor:pointer}
.stages button:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.stages .n{font-family:var(--f-mono);font-size:.8rem;color:var(--muted)}
.stages .t{font-family:var(--f-display);font-size:1.2rem}
.stages .w{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.stages button[aria-selected="true"] .n,.stages button[aria-selected="true"] .t{color:var(--accent-ink)}
.stages button[aria-selected="true"]{background:linear-gradient(90deg,color-mix(in srgb,var(--accent) 9%,transparent),transparent 70%)}
.stage-panel{background:var(--sheet);border:1px solid var(--rule-2);padding:clamp(18px,3vw,28px);min-width:0}
.stage-panel h3{font-size:1.5rem;margin:6px 0 10px}
.stage-panel p{color:var(--ink-2)}
.writes{margin-top:20px;border-top:1px solid var(--rule-2)}
.writes div{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:9px 0;border-bottom:1px dashed var(--rule);font-family:var(--f-mono);font-size:.78rem}
.writes div span:last-child{color:var(--muted);text-align:right}
@media (max-width:860px){.pipe{grid-template-columns:1fr}}

/* capability lists */
.caps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:2px solid var(--ink)}
.caps article{padding:24px 24px 28px 0;border-bottom:1px solid var(--rule);display:grid;gap:10px;align-content:start}
.caps article:not(:nth-child(3n+1)){padding-left:24px;border-left:1px solid var(--rule)}
.caps p{color:var(--ink-2);font-size:.95rem}
.caps .out{font-family:var(--f-mono);font-size:.7rem;color:var(--muted);letter-spacing:.04em;margin-top:4px}
@media (max-width:960px){.caps{grid-template-columns:repeat(2,minmax(0,1fr))}.caps article:not(:nth-child(3n+1)){padding-left:0;border-left:0}.caps article:nth-child(2n){padding-left:24px;border-left:1px solid var(--rule)}}
@media (max-width:600px){.caps{grid-template-columns:1fr}.caps article:nth-child(2n){padding-left:0;border-left:0}}

/* 3d stage */
.demo{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:0;border:1px solid var(--rule-2);background:var(--sheet);margin-bottom:56px}
.demo .stage3d{position:relative;aspect-ratio:4/3;max-width:100%;border-right:1px solid var(--rule-2);min-width:0}
.demo canvas{display:block;width:100%;height:100%}
.demo .fallback{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted);font-family:var(--f-mono);font-size:.8rem;padding:20px;text-align:center}
.demo aside{padding:22px;display:flex;flex-direction:column;gap:14px;min-width:0}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:2px;font-size:.92rem}
.steps li{display:grid;grid-template-columns:1.8em minmax(0,1fr);gap:8px;padding:7px 8px;border-radius:3px;color:var(--muted)}
.steps li.done{color:var(--ink-2)}
.steps li.now{color:var(--ink);background:color-mix(in srgb,var(--accent) 12%,transparent)}
.steps li b{font-family:var(--f-mono);font-weight:400;font-size:.78rem}
.demo .ctrl{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto}
.demo .ctrl .btn{min-height:40px;padding:0 14px;font-size:.88rem}
@media (max-width:860px){.demo{grid-template-columns:1fr}.demo .stage3d{border-right:0;border-bottom:1px solid var(--rule-2)}}

/* WO drawing */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,64px);align-items:center}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.drawing{background:var(--sheet);border:1px solid var(--rule-2);overflow-x:auto}
.drawing svg{display:block;width:100%;min-width:420px;height:auto}
.legend{display:flex;gap:18px;flex-wrap:wrap;padding:10px 14px;border-top:1px solid var(--rule-2);font-family:var(--f-mono);font-size:.72rem;color:var(--muted)}
.legend i{display:inline-block;width:18px;height:0;vertical-align:middle;margin-right:6px}
.bullets{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:10px}
.bullets li{display:grid;grid-template-columns:14px minmax(0,1fr);gap:10px;color:var(--ink-2)}
.bullets li::before{content:"";width:7px;height:7px;margin-top:.62em;background:var(--accent)}

/* nest comparison */
.nest{margin-top:56px;display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(24px,5vw,64px);align-items:center}
.bars{display:grid;gap:18px}
.bar .row{display:flex;justify-content:space-between;gap:12px;font-family:var(--f-mono);font-size:.8rem;margin-bottom:6px;flex-wrap:wrap}
.bar .track{height:28px;border:1px solid var(--rule-2);position:relative;background:repeating-linear-gradient(135deg,transparent 0 6px,var(--rule) 6px 7px)}
.bar .fill{position:absolute;inset:0 auto 0 0;background:var(--ink)}
.bar.best .fill{background:var(--accent)}
.boards{display:flex;gap:4px;flex-wrap:wrap;margin-top:8px}
.boards i{width:16px;height:22px;border:1px solid var(--rule-2);background:var(--paper-2)}
.bar.best .boards i{border-color:var(--accent)}
@media (max-width:860px){.nest{grid-template-columns:1fr}}

/* ledger */
.ledger-tools{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.chip{all:unset;box-sizing:border-box;min-height:40px;padding:0 14px;display:inline-flex;align-items:center;border:1px solid var(--rule-2);border-radius:999px;font-size:.88rem;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.chip:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.ledger{border:1px solid var(--rule-2);background:var(--sheet);overflow-x:auto}
.ledger table{width:100%;border-collapse:collapse;font-family:var(--f-mono);font-size:.78rem;min-width:720px;font-variant-numeric:tabular-nums}
.ledger th{text-align:left;font-weight:500;font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:10px 14px;border-bottom:1px solid var(--rule-2)}
.ledger td{padding:10px 14px;border-bottom:1px dashed var(--rule);vertical-align:top}
.ledger td.why{font-family:var(--f-body);font-size:.88rem;color:var(--ink-2)}
.ledger tr[hidden]{display:none}
.note{margin-top:12px;font-size:.85rem;color:var(--muted)}

/* lockdowel */
.ld-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,64px);align-items:start}
.spec{border-top:2px solid var(--ink)}
.spec div{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;padding:12px 0;border-bottom:1px solid var(--rule)}
.spec dt{color:var(--ink-2)}
.spec dd{margin:0;font-family:var(--f-mono);font-size:.85rem;text-align:right}
@media (max-width:860px){.ld-grid{grid-template-columns:1fr}}

/* path */
.path{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);border:1px solid var(--rule-2);background:var(--sheet)}
.path>div{padding:clamp(22px,4vw,36px);display:grid;gap:14px;align-content:start}
.path>div+div{border-left:1px solid var(--rule-2)}
.path h3{font-size:1.7rem}
.path ul{margin:0;padding-left:1.1em;color:var(--ink-2);display:grid;gap:6px}
@media (max-width:760px){.path{grid-template-columns:1fr}.path>div+div{border-left:0;border-top:1px solid var(--rule-2)}}

.contact{margin-top:56px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding-top:32px;border-top:2px solid var(--ink)}
.contact .addr{font-family:var(--f-mono);font-size:1rem;user-select:all;word-break:break-all}

/* product sub-sections */
.sub{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:end;margin:clamp(48px,7vw,80px) 0 22px}
.sub:first-of-type{margin-top:0}
.sub h3{font-size:clamp(1.6rem,2.8vw,2.1rem)}
.sub p{color:var(--ink-2);max-width:62ch;margin-top:8px}
.caps.four{grid-template-columns:repeat(4,minmax(0,1fr))}
.caps.four article:not(:nth-child(3n+1)){padding-left:0;border-left:0}
.caps.four article:not(:nth-child(4n+1)){padding-left:24px;border-left:1px solid var(--rule)}
@media (max-width:1060px){.caps.four{grid-template-columns:repeat(2,minmax(0,1fr))}.caps.four article:not(:nth-child(4n+1)){padding-left:0;border-left:0}.caps.four article:nth-child(2n){padding-left:24px;border-left:1px solid var(--rule)}}
@media (max-width:600px){.caps.four{grid-template-columns:1fr}.caps.four article:nth-child(2n){padding-left:0;border-left:0}}
.next{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border:1px dashed var(--rule-2);margin-top:40px}
.next>div{padding:20px 22px;display:grid;gap:6px}
.next>div+div{border-left:1px dashed var(--rule-2)}
.next p{color:var(--ink-2);font-size:.95rem}
.soon{justify-self:start;font-family:var(--f-mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;padding:2px 8px;border:1px solid var(--muted);color:var(--muted);border-radius:3px}
@media (max-width:640px){.next{grid-template-columns:1fr}.next>div+div{border-left:0;border-top:1px dashed var(--rule-2)}}

/* automation: kitchen generator */
.gen{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);border:1px solid var(--rule-2);background:var(--sheet)}
.gen form{padding:clamp(18px,3vw,28px);display:grid;gap:18px;align-content:start;border-right:1px solid var(--rule-2);min-width:0}
.seg{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--ink);border-radius:999px;overflow:hidden}
.seg button{all:unset;box-sizing:border-box;text-align:center;min-height:40px;line-height:40px;font-size:.9rem;cursor:pointer}
.seg button+button{border-left:1px solid var(--ink)}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.seg button:focus-visible{outline:2px solid var(--accent);outline-offset:-3px}
.field{display:grid;gap:6px}
.field label{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.field input[type=number]{font:500 1rem var(--f-mono);padding:10px 12px;border:1px solid var(--rule-2);background:var(--paper);color:var(--ink);border-radius:3px;width:100%;min-height:44px}
.check{display:flex;gap:10px;align-items:center;font-size:.95rem;min-height:40px}
.check input{width:20px;height:20px;accent-color:var(--accent)}
.gen .rule{font-size:.85rem;color:var(--muted);border-top:1px solid var(--rule);padding-top:14px}
.gen .out{padding:clamp(18px,3vw,28px);display:grid;gap:18px;min-width:0}
.plan{border:1px solid var(--rule);background:var(--paper);overflow:hidden}
.plan svg{display:block;width:100%;height:auto;max-height:340px}
.tally{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:2px solid var(--ink)}
.tally div{padding:10px 12px 0 0}
.tally b{display:block;font:500 1.8rem/1.1 var(--f-display);font-variant-numeric:tabular-nums}
.tally span{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.cablist{font-family:var(--f-mono);font-size:.78rem;color:var(--ink-2);line-height:1.8}
.gen .err{color:var(--accent-ink);font-size:.9rem}
@media (max-width:900px){.gen{grid-template-columns:1fr}.gen form{border-right:0;border-bottom:1px solid var(--rule-2)}}
@media (max-width:520px){.tally{grid-template-columns:repeat(2,minmax(0,1fr))}}
.measured{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;align-items:center;margin-top:22px;padding:16px 20px;border-left:3px solid var(--accent);background:var(--sheet)}
.measured b{font:500 2.2rem/1 var(--f-display);color:var(--accent-ink)}
.measured p{color:var(--ink-2)}
.who{margin-top:56px;border-top:2px solid var(--ink)}
.who>div{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) minmax(0,1fr);gap:16px;padding:12px 0;border-bottom:1px solid var(--rule);font-size:.95rem}
.who>div:first-child{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.who>div>span:nth-child(2){color:var(--muted)}
.who>div>span:nth-child(3){color:var(--ink)}
@media (max-width:640px){.who>div{grid-template-columns:1fr 1fr}.who>div>span:first-child{grid-column:1/-1;font-weight:500}}

/* learning loop */
.loop{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:2px solid var(--ink);margin-bottom:56px;counter-reset:lp}
.loop>div{padding:20px 22px 24px 0;display:grid;gap:8px;align-content:start;position:relative}
.loop>div+div{padding-left:22px;border-left:1px solid var(--rule)}
.loop .n{font-family:var(--f-mono);font-size:.78rem;color:var(--accent-ink)}
.loop p{color:var(--ink-2);font-size:.95rem}
.loop>div:last-child .n::after{content:" ↺ back to 1";color:var(--muted)}
@media (max-width:900px){.loop{grid-template-columns:repeat(2,minmax(0,1fr))}.loop>div:nth-child(3){padding-left:0;border-left:0}.loop>div:nth-child(n+3){border-top:1px solid var(--rule)}}
@media (max-width:520px){.loop{grid-template-columns:1fr}.loop>div{padding-left:0!important;border-left:0!important}.loop>div+div{border-top:1px solid var(--rule)}}
.learns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--rule-2);margin-bottom:56px}
.learns>div{padding:18px 20px 20px 0;border-bottom:1px solid var(--rule);display:grid;gap:6px;align-content:start}
.learns>div:not(:nth-child(3n+1)){padding-left:20px;border-left:1px solid var(--rule)}
.learns b{font-weight:600}
.learns p{color:var(--ink-2);font-size:.92rem}
@media (max-width:860px){.learns{grid-template-columns:1fr}.learns>div{padding-left:0!important;border-left:0!important}}

footer{padding-block:40px;border-top:1px solid var(--rule)}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center;color:var(--muted);font-size:.85rem}

/* title block strip */
.tb{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid var(--rule-2);margin-top:clamp(40px,6vw,64px);font-family:var(--f-mono);font-size:.74rem}
.tb>div{padding:8px 12px;border-right:1px solid var(--rule);min-width:0}
.tb>div:last-child{border-right:0}
.tb span{display:block;font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
@media (max-width:700px){.tb{grid-template-columns:repeat(2,minmax(0,1fr))}.tb>div{border-bottom:1px solid var(--rule)}}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* ===== multi-page additions ===== */
nav.links{align-items:center}
nav.links a[aria-current="page"],nav.links .dd>a[aria-current="page"]{color:var(--accent-ink)}
nav.links a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--accent)}
.dd{position:relative}
.dd>a::after{content:" ▾";font-size:.7em;color:var(--muted)}
.dd-menu{position:absolute;top:100%;left:-14px;min-width:220px;background:var(--sheet);border:1px solid var(--rule-2);padding:6px;display:none;z-index:30}
.dd:hover .dd-menu,.dd:focus-within .dd-menu{display:grid}
.dd-menu a{padding:9px 10px!important;border-radius:3px;box-shadow:none!important}
.dd-menu a:hover{background:var(--paper-2)}
.dd-menu small{display:block;color:var(--muted);font-size:.78rem}
details.menu{display:none;margin-left:auto}
details.menu summary{list-style:none;cursor:pointer;min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--rule-2);border-radius:999px;font-size:.92rem}
details.menu summary::-webkit-details-marker{display:none}
details.menu[open] summary{background:var(--ink);color:var(--paper)}
details.menu .panel{position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:1px solid var(--rule-2);padding:8px var(--gut) 16px;display:grid}
details.menu .panel a{text-decoration:none;padding:12px 0;border-bottom:1px solid var(--rule);font-size:1rem}
details.menu .panel a.subl{padding-left:18px;color:var(--ink-2);font-size:.95rem}
details.menu .panel a[aria-current="page"]{color:var(--accent-ink)}
@media (max-width:860px){nav.links{display:none}details.menu{display:block}header.top .btn.solid{display:none}}
header.top .wrap{position:relative}

.pagehead{padding-block:clamp(48px,7vw,88px) clamp(32px,5vw,56px)}
.pagehead h1{font-size:clamp(2.3rem,5.2vw,4.2rem);max-width:18ch}
.pagehead .lede{margin-top:22px}
.crumbs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:18px}
.crumbs a,.crumbs span{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--accent-ink)}
.tabs{display:flex;gap:0;border-bottom:1px solid var(--rule-2);margin-top:32px;overflow-x:auto;overflow-y:hidden;scrollbar-width:none}
.tabs a{text-decoration:none;padding:12px 18px;white-space:nowrap;font-size:.95rem;color:var(--ink-2);border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--accent);font-weight:500}

.products{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0;border:1px solid var(--rule-2);background:var(--sheet)}
.products>a{display:grid;gap:12px;align-content:start;padding:clamp(22px,4vw,36px);text-decoration:none}
.products>a+a{border-left:1px solid var(--rule-2)}
.products>a:hover h3{color:var(--accent-ink)}
.products h3{font-size:clamp(1.6rem,2.6vw,2.1rem)}
.products p{color:var(--ink-2)}
.products .mods{display:flex;gap:8px;flex-wrap:wrap}
.products .mods span{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.06em;padding:3px 9px;border:1px solid var(--rule-2);border-radius:3px}
.products .mods span.soon{border-style:dashed;color:var(--muted)}
.more{font-family:var(--f-mono);font-size:.78rem;color:var(--accent-ink)}
.minor{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);border:1px solid var(--rule-2);border-top:0}
.minor>a{display:grid;gap:8px;padding:22px clamp(22px,4vw,36px);text-decoration:none}
.minor>a+a{border-left:1px solid var(--rule-2)}
.minor>a:hover b{color:var(--accent-ink)}
.minor b{font:500 1.3rem var(--f-display)}
.minor p{color:var(--ink-2);font-size:.95rem}
@media (max-width:760px){.products,.minor{grid-template-columns:1fr}.products>a+a,.minor>a+a{border-left:0;border-top:1px solid var(--rule-2)}}

.mods-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:2px solid var(--ink)}
.mods-grid>*{padding:22px 20px 24px 0;display:grid;gap:8px;align-content:start;text-decoration:none;border-bottom:1px solid var(--rule)}
.mods-grid>*+*{padding-left:20px;border-left:1px solid var(--rule)}
.mods-grid a:hover h3{color:var(--accent-ink)}
.mods-grid p{color:var(--ink-2);font-size:.95rem}
@media (max-width:900px){.mods-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mods-grid>*:nth-child(3){padding-left:0;border-left:0}}
@media (max-width:520px){.mods-grid{grid-template-columns:1fr}.mods-grid>*{padding-left:0!important;border-left:0!important}}

.site3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:2px solid var(--ink)}
.site3>div{padding:22px 22px 26px 0;display:grid;gap:10px;align-content:start}
.site3>div+div{padding-left:22px;border-left:1px solid var(--rule)}
.site3 h3{font-size:1.45rem}
.site3 ul{margin:0;padding-left:1.1em;color:var(--ink-2);display:grid;gap:6px;font-size:.95rem}
@media (max-width:900px){.site3{grid-template-columns:1fr}.site3>div+div{padding-left:0;border-left:0;border-top:1px solid var(--rule)}}
.survey{border:1px solid var(--rule-2);background:var(--sheet);overflow-x:auto;margin-top:40px}
.survey table{width:100%;border-collapse:collapse;font-family:var(--f-mono);font-size:.76rem;min-width:760px;font-variant-numeric:tabular-nums}
.survey caption{text-align:left;padding:12px 14px;font-family:var(--f-body);font-size:.95rem;font-weight:500;border-bottom:1px solid var(--rule-2)}
.survey th{text-align:left;font-weight:500;font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:9px 12px;border-bottom:1px solid var(--rule-2)}
.survey td{padding:9px 12px;border-bottom:1px dashed var(--rule)}
.survey td.num{text-align:right}
.survey td.fill{background:color-mix(in srgb,var(--accent) 7%,transparent)}
.two{display:grid;grid-template-columns:minmax(0,1fr);gap:24px;margin-top:40px}
@media (max-width:900px){.two{grid-template-columns:1fr}}
.v{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;padding:1px 7px;border:1px solid currentColor;border-radius:3px}
.v.ok{color:var(--ok)} .v.wn{color:var(--warn)} .v.bad{color:var(--accent-ink)}
.site-strip{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:center;padding:22px 24px;border:1px solid var(--rule-2);background:var(--sheet);margin-top:56px}
.site-strip p{color:var(--ink-2)}

.sheets{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.sheetcard{border:1px solid var(--rule-2);background:var(--sheet);font-family:var(--f-mono);font-size:.72rem;display:grid;grid-template-rows:auto 1fr auto auto;min-width:0}
.sheetcard .hd{padding:8px 10px;border-bottom:1px solid var(--rule);color:var(--ink)}
.sheetcard svg{display:block;width:100%;height:auto;padding:10px}
.sheetcard .st{padding:5px 10px;text-align:center;letter-spacing:.1em;font-size:.64rem;border-top:1px solid var(--rule)}
.sheetcard .st.ok{color:var(--ok);background:color-mix(in srgb,var(--ok) 10%,transparent)}
.sheetcard .st.wn{color:var(--warn);background:color-mix(in srgb,var(--warn) 10%,transparent)}
.sheetcard .st.bad{color:var(--accent-ink);background:color-mix(in srgb,var(--accent) 10%,transparent)}
.sheetcard .tb2{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--rule)}
.sheetcard .tb2 span{padding:5px 10px;color:var(--muted)}
.sheetcard .tb2 span+span{border-left:1px solid var(--rule)}
@media (max-width:900px){.sheets{grid-template-columns:repeat(2,minmax(0,1fr))}}
.cta-band{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding-top:32px;border-top:2px solid var(--ink)}
.slotdet{margin:0;padding:10px 0 4px;border-top:1px solid var(--rule);display:grid;gap:4px}
.slotdet svg{display:block;width:100%;height:auto}
.survey.fit table{min-width:520px}

/* live drawings */
.dwg-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:32px}
.dwg-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){.dwg-grid,.dwg-grid.three{grid-template-columns:1fr}}
.dwg{margin:0;border:1px solid var(--rule-2);background:var(--sheet);display:grid;grid-template-rows:auto 1fr;min-width:0}
.dwg>a{display:block;background:#fff;line-height:0}
.dwg img{display:block;width:100%;height:auto;max-width:100%}
.dwg>a:hover img,.dwg>a:focus-visible img{outline:2px solid var(--accent);outline-offset:-2px}
.dwg figcaption{padding:12px 14px;font-size:.92rem;color:var(--ink-2);border-top:1px solid var(--rule-2);display:grid;gap:4px}
.dwg figcaption b{color:var(--ink);font-weight:600}
.dwg figcaption a{font-family:var(--f-mono);font-size:.74rem;color:var(--accent-ink);text-decoration:none;justify-self:start}
.dwg .state{font-family:var(--f-mono);font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;justify-self:start;padding:1px 7px;border:1px solid currentColor;border-radius:3px}
.dwg .state.ok{color:var(--ok)} .dwg .state.wn{color:var(--warn)}

/* production time */
.timecard{border:1px solid var(--rule-2);background:var(--sheet);padding:18px 20px;min-width:0}
.tc-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.tc-head .legend{border:0;padding:0}
.tc-head .legend i{width:14px;height:10px;border:0;margin-right:6px;vertical-align:middle;display:inline-block}
.timecard i.std{background:var(--muted)} .timecard i.act{background:var(--accent)}
.tc-rows{display:grid;gap:12px}
.tc-row{display:grid;grid-template-columns:6.5em minmax(0,1fr) auto auto;gap:12px;align-items:center;font-size:.9rem}
.tc-bars{display:grid;gap:3px}
.tc-bars i{display:block;height:9px}
.tc-num{font-family:var(--f-mono);font-size:.76rem;color:var(--muted);font-variant-numeric:tabular-nums}
@media (max-width:520px){.tc-row{grid-template-columns:5em minmax(0,1fr) auto}.tc-num{display:none}}

/* SIGNAL tab ribbon (drawn from the add-in's icons) */
.ic-d{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .ic-l{display:none}:root:not([data-theme="light"]) .ic-d{display:inline-block}}
:root[data-theme="dark"] .ic-l{display:none} :root[data-theme="dark"] .ic-d{display:inline-block}
.ribbon-fig{margin:0}
.ribbon{border:1px solid var(--rule-2);background:var(--sheet);overflow-x:auto;box-shadow:0 18px 40px -28px rgba(0,0,0,.35)}
.rb-tabs{display:flex;gap:0;border-bottom:1px solid var(--rule-2);font:600 .68rem/1 var(--f-body);letter-spacing:.04em;min-width:max-content}
.rb-tabs span{padding:9px 14px;color:var(--muted)}
.rb-tabs span.on{color:var(--ink);box-shadow:inset 0 -2px 0 var(--accent);background:color-mix(in srgb,var(--accent) 6%,transparent)}
.rb-panels{display:flex;min-width:max-content}
.rb-panel{display:grid;grid-template-rows:1fr auto;justify-items:center;gap:6px;padding:10px 12px 7px;border-right:1px solid var(--rule);text-decoration:none;color:var(--ink)}
.rb-panel:hover,.rb-panel:focus-visible{background:color-mix(in srgb,var(--accent) 8%,transparent)}
.rb-icons{display:flex;gap:6px;align-items:center;min-height:36px}
.rb-btn{display:inline-flex;padding:2px}
.rb-btn img{width:32px;height:32px}
.rb-name{font:600 .62rem/1 var(--f-body);letter-spacing:.06em;color:var(--ink-2);white-space:nowrap}
.ribbon-fig .note{margin-top:10px}

.inventory{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:40px}
@media (max-width:1000px){.inventory{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.inventory{grid-template-columns:1fr}}
.inv-panel{border:1px solid var(--rule-2);background:var(--sheet);scroll-margin-top:90px;min-width:0}
.inv-panel:target{outline:2px solid var(--accent)}
.inv-panel header{display:grid;gap:2px;padding:12px 14px;border-bottom:1px solid var(--rule-2)}
.inv-panel header b{font:600 .78rem/1.2 var(--f-mono);letter-spacing:.12em}
.inv-panel header span{font-size:.85rem;color:var(--muted)}
.inv-panel ul{list-style:none;margin:0;padding:4px 14px 10px;display:grid}
.inv-panel li{display:grid;grid-template-columns:22px minmax(0,1fr);gap:10px;padding:10px 0;border-bottom:1px dashed var(--rule)}
.inv-panel li:last-child{border-bottom:0}
.inv-panel li img{width:20px;height:20px;margin-top:2px}
.inv-panel li b{font-weight:600;font-size:.95rem}
.inv-panel li p{font-size:.88rem;color:var(--ink-2);margin-top:2px}

/* process walk: reads / calculates / writes */
.proc{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:clamp(24px,4vw,48px);align-items:start;padding-block:clamp(40px,6vw,64px);border-top:1px solid var(--rule)}
.proc:first-of-type{border-top:2px solid var(--ink)}
.proc h3{font-size:clamp(1.5rem,2.4vw,1.9rem);margin:8px 0 12px}
.proc .prose{margin-bottom:16px}
.rcw{display:grid;gap:0;border:1px solid var(--rule-2);background:var(--sheet)}
.rcw>div{display:grid;grid-template-columns:7.5em minmax(0,1fr);gap:12px;padding:10px 14px;border-bottom:1px solid var(--rule)}
.rcw>div:last-child{border-bottom:0}
.rcw dt{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding-top:3px}
.rcw dd{margin:0;font-size:.92rem;color:var(--ink-2)}
.rcw dd b{color:var(--ink);font-weight:600}
.calc{font-family:var(--f-mono);font-size:.8rem;font-variant-numeric:tabular-nums;border:1px solid var(--rule-2);margin-top:14px;background:var(--paper)}
.calc caption{text-align:left;padding:8px 12px;font-family:var(--f-body);font-size:.85rem;color:var(--muted);caption-side:top}
.calc table{width:100%;border-collapse:collapse}
.calc td{padding:7px 12px;border-top:1px dashed var(--rule)}
.calc td:last-child{text-align:right;color:var(--ink)}
@media (max-width:900px){.proc{grid-template-columns:1fr}}
.cmdchips{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.cmdchips a{display:inline-flex;align-items:center;gap:6px;font-family:var(--f-mono);font-size:.7rem;padding:3px 8px;border:1px solid var(--rule-2);border-radius:3px;text-decoration:none;color:var(--ink-2)}
.cmdchips a img{width:14px;height:14px}
.cmdchips a:hover{border-color:var(--accent);color:var(--accent-ink)}
.tj-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.tj-grid figure{margin:0;border:1px solid var(--rule-2);background:var(--sheet);padding:10px 12px;display:grid;gap:6px}
.tj-grid svg{display:block;width:100%;height:auto;max-height:110px}
.tj-grid figcaption{font-size:.85rem;color:var(--ink-2);display:grid;gap:2px}
.tj-grid figcaption b{color:var(--ink)}
.inv-panel header a{font-family:var(--f-mono);font-size:.74rem;color:var(--accent-ink);text-decoration:none;margin-top:4px}
.inv-panel .pn{font-family:var(--f-mono);font-size:.62rem;letter-spacing:.08em;color:var(--muted);border:1px solid var(--rule-2);border-radius:3px;padding:0 5px;margin-left:4px;vertical-align:2px}
.mods-grid.five{grid-template-columns:repeat(5,minmax(0,1fr))}
@media (max-width:1060px){.mods-grid.five{grid-template-columns:repeat(3,minmax(0,1fr))}.mods-grid.five>*:nth-child(4){padding-left:0;border-left:0}.mods-grid.five>*:nth-child(3){padding-left:20px;border-left:1px solid var(--rule)}}
@media (max-width:640px){.mods-grid.five{grid-template-columns:1fr}.mods-grid.five>*{padding-left:0!important;border-left:0!important}}
header.top a.lang{margin-left:4px;font:600 .74rem var(--f-mono);letter-spacing:.08em;text-decoration:none;color:var(--ink-2);border:1px solid var(--rule-2);border-radius:999px;min-height:36px;display:inline-flex;align-items:center;padding:0 10px}
header.top a.lang:hover{border-color:var(--accent);color:var(--accent-ink)}
@media (max-width:860px){header.top a.lang{margin-left:auto}}
@media (max-width:860px){details.menu{margin-left:8px}}

/* the source: model -> everything derived */
.derive{display:grid;grid-template-columns:minmax(0,.8fr) 60px minmax(0,2fr);gap:18px;align-items:center;margin-bottom:48px}
.src-box{border:2px solid var(--ink);background:var(--sheet);padding:20px 22px;display:grid;gap:8px}
.src-box b{font:500 1.9rem/1.1 var(--f-display)}
.src-box ul{margin:0;padding-left:1.1em;color:var(--ink-2);display:grid;gap:4px}
.src-box .mono{color:var(--accent-ink)}
.derive .arrow svg{display:block;width:100%;height:20px}
.derived{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:2px solid var(--ink)}
.derived li{display:grid;gap:3px;padding:12px 14px 12px 0;border-bottom:1px solid var(--rule)}
.derived li:nth-child(2n){padding-left:14px;border-left:1px solid var(--rule)}
.derived li:last-child{grid-column:1/-1;padding-left:0;border-left:0}
.derived b{font:500 1.15rem var(--f-display)}
.derived span{color:var(--ink-2);font-size:.92rem}
@media (max-width:860px){.derive{grid-template-columns:1fr}.derive .arrow{transform:rotate(90deg);width:40px;justify-self:center}.derived{grid-template-columns:1fr}.derived li:nth-child(2n){padding-left:0;border-left:0}}
.versus{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);border:1px solid var(--rule-2)}
.versus>div{padding:22px 24px;display:grid;gap:12px;align-content:start}
.versus>div+div{border-left:1px solid var(--rule-2);background:var(--sheet)}
.versus ul{margin:0;padding-left:1.1em;display:grid;gap:6px;color:var(--ink-2)}
.verdict{font-weight:600;padding-top:10px;border-top:1px solid var(--rule)}
.verdict.bad{color:var(--accent-ink)} .verdict.ok{color:var(--ok)}
@media (max-width:760px){.versus{grid-template-columns:1fr}.versus>div+div{border-left:0;border-top:1px solid var(--rule-2)}}

/* hero record: example switch */
.ex-switch{display:flex;gap:6px;margin-bottom:10px;flex-wrap:wrap}
.ex-switch button{all:unset;box-sizing:border-box;cursor:pointer;font:500 .8rem var(--f-body);padding:6px 12px;min-height:34px;border:1px solid var(--rule-2);border-radius:999px;color:var(--ink-2)}
.ex-switch button[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.ex-switch button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.procs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:2px solid var(--ink)}
.procs>a{display:grid;gap:6px;align-content:start;padding:18px 18px 22px 0;text-decoration:none}
.procs>a+a{padding-left:18px;border-left:1px solid var(--rule)}
.procs>a:hover b{color:var(--accent-ink)}
.procs b{font:500 1.25rem var(--f-display)}
.procs span{color:var(--ink-2);font-size:.92rem}
@media (max-width:860px){.procs{grid-template-columns:repeat(2,minmax(0,1fr))}.procs>a:nth-child(3){padding-left:0;border-left:0}.procs>a:nth-child(n+3){border-top:1px solid var(--rule)}}
@media (max-width:480px){.procs{grid-template-columns:1fr}.procs>a{padding-left:0!important;border-left:0!important}.procs>a+a{border-top:1px solid var(--rule)}}

/* home: belief first, then the statement with the example */
section.sheet.first{border-top:0;padding-top:clamp(48px,7vw,88px)}
h1.belief{font-size:clamp(2.2rem,4.8vw,3.8rem)}
h2.h1like{font-size:clamp(2.5rem,6.4vw,5.1rem);line-height:1.08}
section.hero{border-top:1px solid var(--rule);scroll-margin-top:70px}
.hero .hero-grid h2 .ac{color:var(--accent)}
.opener{padding-block:clamp(48px,8vw,96px) clamp(48px,6vw,72px)}
.opener h1 .ac{color:var(--accent)}
.opener-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(20px,4vw,48px);margin-top:28px}
.opener-grid .lede{margin:0}
@media (max-width:860px){.opener-grid{grid-template-columns:1fr}}
h2.hiw{font-size:clamp(2.2rem,4.6vw,3.6rem);margin:12px 0 0}
.gen-head{display:grid;gap:8px;max-width:78ch;margin-bottom:18px}
.gen-head h3{font-size:clamp(1.5rem,2.4vw,1.9rem)}
.gen-head p{color:var(--ink-2)}
.gen-head .ind{justify-self:start;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;padding:3px 9px;border:1px solid var(--accent);color:var(--accent-ink);border-radius:3px}
.loop.noloop>div:last-child .n::after{content:none}
html[lang="es"] .loop>div:last-child .n::after{content:" ↺ vuelve a 1"}
html[lang] .loop.noloop>div:last-child .n::after{content:none}
.gen-tabs{display:inline-grid;grid-auto-flow:column;border:1px solid var(--ink);border-radius:999px;overflow:hidden;margin:4px 0 28px;max-width:100%}
.gen-tabs button{all:unset;box-sizing:border-box;cursor:pointer;padding:0 18px;min-height:44px;display:inline-flex;align-items:center;font:500 .92rem var(--f-body);white-space:nowrap}
.gen-tabs button+button{border-left:1px solid var(--ink)}
.gen-tabs button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.gen-tabs button:focus-visible{outline:2px solid var(--accent);outline-offset:-3px}
@media (max-width:560px){.gen-tabs{grid-auto-flow:row;border-radius:12px;width:100%}.gen-tabs button+button{border-left:0;border-top:1px solid var(--ink)}.gen-tabs button{white-space:normal;padding:10px 16px}}
.mods-grid.six{grid-template-columns:repeat(3,minmax(0,1fr))}
.mods-grid.six>*{padding-left:20px;border-left:1px solid var(--rule)}
.mods-grid.six>*:nth-child(3n+1){padding-left:0;border-left:0}
@media (max-width:900px){.mods-grid.six{grid-template-columns:repeat(2,minmax(0,1fr))}.mods-grid.six>*{padding-left:20px;border-left:1px solid var(--rule)}.mods-grid.six>*:nth-child(2n+1){padding-left:0;border-left:0}}
@media (max-width:520px){.mods-grid.six{grid-template-columns:1fr}.mods-grid.six>*{padding-left:0;border-left:0}}
.sketchfig{background:var(--sheet)}
.sketchfig svg.sk{display:block;width:100%;height:auto;padding:12px}
.sk line,.sk polyline{fill:none;stroke:var(--ink);stroke-width:1.4;vector-effect:non-scaling-stroke}
.sk .c{stroke:var(--muted);stroke-dasharray:6 5;stroke-width:1}
.sk text{font-family:var(--f-mono);font-size:150px;fill:var(--muted);letter-spacing:.04em}
.sk text.s{font-size:120px}
/* 2 x 2 card grid: the left column starts flush, a rule between rows */
.loop.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.loop.two>div:nth-child(odd){padding-left:0;border-left:0}
.loop.two>div:nth-child(n+3){border-top:1px solid var(--rule)}
@media (max-width:760px){.loop.two{grid-template-columns:1fr}.loop.two>div{padding-left:0;border-left:0}.loop.two>div+div{border-top:1px solid var(--rule)}}
/* drawings and their reviews: prose rows, body font; stacked on a phone */
#drawn-by-signal .survey td{font-family:var(--f-body);font-size:.92rem;line-height:1.5;vertical-align:top}
#drawn-by-signal .survey td:first-child{width:32%}
@media (max-width:640px){#drawn-by-signal .survey table{min-width:0}#drawn-by-signal .survey table,#drawn-by-signal .survey tbody,#drawn-by-signal .survey tr,#drawn-by-signal .survey td{display:block;width:auto}
#drawn-by-signal .survey thead{display:none}#drawn-by-signal .survey tr{padding:12px 0;border-bottom:1px solid var(--rule)}#drawn-by-signal .survey td{border:0;padding:2px 12px}#drawn-by-signal .survey td:first-child{width:auto;padding-bottom:4px}}
/* production files: the export's folder tree */
.tree{border:1px solid var(--rule-2);background:var(--sheet);padding:16px 18px;font-family:var(--f-mono);font-size:.8rem}
.tree ul{list-style:none;margin:10px 0 0;padding:0}
.tree ul ul{margin:4px 0 6px 18px}
.tree li{padding:3px 0;color:var(--ink-2)}
.tree b{color:var(--ink);font-weight:500}
.tree i{font-style:normal;color:var(--accent-ink);margin-left:6px;white-space:nowrap}
/* "same kitchen, nested two ways": the emphasis block on Nesting */
.big-h{font-size:clamp(2rem,4.4vw,3.2rem);line-height:1.05}
.nest.big{margin-top:24px;align-items:start}
.nest-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-bottom:22px;border-top:2px solid var(--ink);padding-top:18px}
.nest-stats b{display:block;font:500 clamp(2.6rem,6vw,4rem)/1 var(--f-display);color:var(--accent-ink)}
.nest-stats span{display:block;margin-top:6px;color:var(--ink-2);font-size:.95rem}
.nest.big .bar .row{font-size:.9rem}
.nest.big .bar .track{height:40px}
.nest.big .boards i{width:22px;height:30px}
/* phone screenshots beside their text */
.app-split{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:clamp(24px,4vw,56px);align-items:start}
.app-split .loop{margin-bottom:0}
.dwg.shot.phone a.zoom{background:transparent}
.dwg.shot.phone img{width:auto;max-width:100%;max-height:640px;height:auto;margin:0 auto;display:block}
@media (max-width:900px){.app-split{grid-template-columns:1fr}}
.app-split .survey table{min-width:0}
.app-split .survey td{font-family:var(--f-body);font-size:.88rem;line-height:1.45;vertical-align:top}
#calibration .survey td{font-family:var(--f-body);font-size:.9rem;line-height:1.45;vertical-align:top}
#calibration .app-split .survey table{min-width:0}

/* drawing viewer */
a.zoom{position:relative;display:block;cursor:zoom-in}
a.zoom .zoom-hint{position:absolute;right:10px;bottom:10px;font:500 .74rem var(--f-body);padding:5px 10px;border-radius:999px;background:rgba(20,19,15,.82);color:#f3f1eb;line-height:1;opacity:.92}
a.zoom .by{position:absolute;left:10px;top:10px;font:500 .7rem var(--f-mono);letter-spacing:.02em;padding:5px 10px;border-radius:999px;background:var(--accent);color:#fff;line-height:1.2;max-width:calc(100% - 20px)}
a.zoom:hover .zoom-hint,a.zoom:focus-visible .zoom-hint{background:var(--accent);color:#fff;opacity:1}
html.lb-open{overflow:hidden}
.lb{position:fixed;inset:0;z-index:100;background:rgba(12,12,10,.94);display:grid;grid-template-rows:auto 1fr}
.lb[hidden]{display:none}
.lb-bar{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;padding:calc(10px + env(safe-area-inset-top,0px)) 14px 10px;color:#f3f1eb;border-bottom:1px solid rgba(243,241,235,.15)}
.lb-t{font:600 .95rem var(--f-body)}
.lb-hint{font:400 .78rem var(--f-body);color:rgba(243,241,235,.65);flex:1 1 220px}
.lb-btns{display:flex;gap:6px;align-items:center;margin-left:auto}
.lb-btns button,.lb-pdf{all:unset;box-sizing:border-box;cursor:pointer;min-width:40px;min-height:40px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(243,241,235,.3);border-radius:999px;color:#f3f1eb;font:500 .9rem var(--f-body)}
.lb-btns button:hover,.lb-pdf:hover,.lb-btns button:focus-visible,.lb-pdf:focus-visible{border-color:#ec6a3c;color:#ec6a3c}
.lb-stage{position:relative;overflow:hidden;touch-action:none;cursor:grab;background:#fff}
.lb-stage:active{cursor:grabbing}
.lb-img{position:absolute;left:0;top:0;transform-origin:0 0;max-width:none;user-select:none;-webkit-user-drag:none}
@media (prefers-reduced-motion:no-preference){.lb-img{transition:none}}