/* uniwire: uniwire.sh landing page.
   Brand tokens: docs/brand/BRAND.md. Fonts: Public Sans (text, headings, logo), JetBrains Mono (code), SIL OFL 1.1, assets/fonts/. */

@font-face { font-family: "Public Sans"; font-weight: 400; font-style: normal; font-display: swap; src: url("../fonts/public-sans-400.woff2") format("woff2"); }
@font-face { font-family: "Public Sans"; font-weight: 600; font-style: normal; font-display: swap; src: url("../fonts/public-sans-600.woff2") format("woff2"); }
@font-face { font-family: "Public Sans"; font-weight: 700; font-style: normal; font-display: swap; src: url("../fonts/public-sans-700.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 400 700; font-style: normal; font-display: swap; src: url("../fonts/jetbrains-mono.woff2") format("woff2"); }

/* ---------------------------------------------------------------- tokens */
:root {
  /* light: bright paper (default). Dark: graphite. The OS preference gives the default; [data-theme] on <html>
     (set by the toggle, remembered in localStorage "uniwire-theme") overrides it. Contrast: docs/brand/BRAND.md */
  color-scheme: light;
  --paper: #F8F9FA; --paper-2: #EEF1F4; --sheet: #FFFFFF;
  --ink: #101317; --ink-2: #343A42; --ink-3: #565E68;
  --rule: #D3D8DE; --rule-2: #E5E8EC; --frame: #101317;
  --l1: #8F3F12; --l3: #7E848C; --n: #1B57A3;
  --accent: var(--l1); --link: var(--n); --focus: #1B57A3;
  --code-bg: #151A20; --code-ink: #E6E8EB; --code-dim: #8F98A2;
  /* conductor colours (IEC 60445): accents, used sparingly */
  --pe-g: #2F8A3A;
  --pe-y: #E2BE12;
  --hl: #E8590C;        /* highlight in drawings (same as the viewer) */
  /* code panels stay dark in both themes */
  --code-k: #9CC3EE;
  --code-s: #E2B48A;
  --code-n: #B6D99A;
  --code-b: #E7A0C0;
  /* type */
  --f-text: "Public Sans", "Helvetica Neue", Arial, sans-serif;
  --f-display: "Public Sans", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  /* layout */
  --page: 1320px;
  --gutter: clamp(16px, 4vw, 40px);
  --label-col: 180px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
  color-scheme: dark;
  --paper: #2A2E33; --paper-2: #33383E; --sheet: #FFFFFF;
  --ink: #F1F2F3; --ink-2: #CFD3D8; --ink-3: #AAB0B8;
  --rule: #474D55; --rule-2: #3A3F46; --frame: #78808A;
  --l1: #F0AF80; --l3: #B5BBC2; --n: #A6CAF7;
  --accent: var(--l1); --link: var(--n); --focus: #A6CAF7;
  --code-bg: #1E2125; --code-ink: #E8E9EB; --code-dim: #99A0A8;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #2A2E33; --paper-2: #33383E; --sheet: #FFFFFF;
  --ink: #F1F2F3; --ink-2: #CFD3D8; --ink-3: #AAB0B8;
  --rule: #474D55; --rule-2: #3A3F46; --frame: #78808A;
  --l1: #F0AF80; --l3: #B5BBC2; --n: #A6CAF7;
  --accent: var(--l1); --link: var(--n); --focus: #A6CAF7;
  --code-bg: #1E2125; --code-ink: #E8E9EB; --code-dim: #99A0A8;
}

/* ---------------------------------------------------------------- base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 16.5px/1.6 var(--f-text); font-feature-settings: "tnum" 0;
  overflow-x: hidden;
}
img, svg { max-width: 100%; }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }
code, kbd, pre, samp { font-family: var(--f-mono); font-size: .86em; }
:not(pre) > code { background: var(--paper-2); border: 1px solid var(--rule-2); padding: .05em .35em; white-space: nowrap; }
h1, h2, h3 { font-family: var(--f-display); font-weight: 700; line-height: 1.08; letter-spacing: -.02em; margin: 0; text-wrap: balance; }
h2 { font-size: clamp(27px, 3.4vw, 38px); }
h3 { font-family: var(--f-text); font-weight: 600; font-size: 20px; line-height: 1.2; letter-spacing: 0; }
p { margin: 0 0 1em; max-width: 68ch; }
.skip { position: absolute; left: -9999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.label {
  font: 600 11px/1.2 var(--f-display); letter-spacing: .09em; text-transform: uppercase; color: var(--ink-3);
}
.mono { font-family: var(--f-mono); }

/* ---------------------------------------------------------------- sheet frame: page width, side rules, zone ruler */
.frame { max-width: var(--page); margin: 0 auto; padding: 0 var(--gutter); }
.ruler {
  display: grid; grid-template-columns: repeat(8, 1fr); height: 23px; overflow: hidden;
  border-left: 1px solid var(--frame); border-right: 1px solid var(--frame); border-bottom: 1px solid var(--frame);
  font: 500 11px/22px var(--f-mono); color: var(--ink-3); text-align: center;
}
.ruler span + span { border-left: 1px solid var(--rule); }
.ruler.top { border-top: 0; }
.ruler.bottom { border-bottom: 0; border-top: 1px solid var(--frame); }

/* ---------------------------------------------------------------- header */
.site-head { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: saturate(1.1) blur(6px); border-bottom: 1px solid var(--frame); }
.site-head .frame { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { display: inline-flex; align-items: center; color: var(--ink); text-decoration: none; }
.brand svg { height: 28px; width: auto; display: block; }
.brand:hover { color: var(--ink); }
.logo-t1 { stroke: var(--l1); } .logo-t2 { stroke: currentColor; } .logo-t3 { stroke: var(--l3); }
.nav { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.nav > a { color: var(--ink); text-decoration: none; font: 600 15px/1 var(--f-text); padding: 6px 0; border-bottom: 2px solid transparent; text-transform: lowercase; }
.nav > a:hover { border-bottom-color: var(--accent); color: var(--ink); }
@media (max-width: 860px) { .nav .opt { display: none; } .nav { gap: 14px; } }
@media (max-width: 420px) { .nav > a:not(.keep) { display: none; } .brand svg { height: 24px; } }

/* ---------------------------------------------------------------- hero */
.hero { border-left: 1px solid var(--frame); border-right: 1px solid var(--frame); }
.hero-top { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 28px 56px; padding: 44px 40px 34px; align-items: stretch; }
.hero-top > div:first-child { display: flex; flex-direction: column; }
.hero-top > div:first-child h1 { margin-block: auto; }
.hero-top > div:last-child { align-self: center; }
.hero h1 { font-size: clamp(40px, 5.6vw, 74px); line-height: 1.0; letter-spacing: -.03em; }
.hero h1 em { font-style: normal; color: var(--accent); }
.kicker { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-bottom: 22px; }
.kicker span::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 8px; border: 1.5px solid currentColor; vertical-align: 1px; }
.lead { font-size: 19px; line-height: 1.5; color: var(--ink-2); margin-bottom: 20px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 18px;
  background: var(--ink); color: var(--paper); text-decoration: none; font: 600 16px/1 var(--f-text);
  border: 1px solid var(--ink);
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.btn .arr { font-family: var(--f-mono); }
.link-arrow { font-weight: 600; color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--frame); padding-bottom: 2px; }
.link-arrow:hover { color: var(--accent); border-color: var(--accent); }

.cmd {
  display: flex; align-items: stretch; border: 1px solid var(--frame); background: var(--sheet); max-width: 100%;
  font: 400 15px/1 var(--f-mono); margin-bottom: 18px; color: #15181C;
}
.cmd code { background: none; border: 0; padding: 13px 14px; font-size: 15px; flex: 1; white-space: nowrap; overflow-x: auto; }
.cmd code::before { content: "$ "; color: #6B7078; }
.copy {
  border: 0; border-left: 1px solid var(--frame); background: transparent; color: inherit; cursor: pointer;
  font: 600 12px/1 var(--f-text); letter-spacing: .08em; text-transform: uppercase; padding: 0 14px; min-width: 76px;
}
.copy:hover { background: var(--paper-2); }
.cmd .copy { color: #15181C; border-left-color: #15181C; }
.cmd .copy:hover { background: #ECE9E1; }

/* workbench: JSON source -> drawn sheet */
.bench { display: grid; grid-template-columns: minmax(0, 5fr) 56px minmax(0, 8fr); border-top: 1px solid var(--frame); }
.bench-src { background: var(--code-bg); color: var(--code-ink); position: relative; display: flex; flex-direction: column; min-width: 0; }
.bench-src .tab, .bench-out .tab {
  display: flex; justify-content: space-between; gap: 12px; align-items: center; padding: 0 14px; height: 36px;
  font: 500 12px/1 var(--f-mono); border-bottom: 1px solid rgba(255,255,255,.12); color: var(--code-dim);
}
.bench-src .tab b { color: var(--code-ink); font-weight: 500; }
.bench-out .tab { color: var(--ink-3); border-bottom: 1px solid var(--frame); background: var(--paper); }
.bench-out .tab b { color: var(--ink); font-weight: 500; }
.bench-src pre { flex: 1; margin: 0; overflow: auto; padding: 12px 0 16px; font-size: 12.5px; line-height: 1.6; max-height: var(--bench-h, 560px); }
.bench-wire {
  position: relative; border-left: 1px solid var(--frame); border-right: 1px solid var(--frame);
  display: flex; align-items: center; justify-content: center; background:
    linear-gradient(var(--frame), var(--frame)) center / 100% 1px no-repeat;
}
.bench-wire span {
  writing-mode: vertical-rl; transform: rotate(180deg); background: var(--paper); padding: 10px 4px;
  font: 500 12px/1 var(--f-mono); color: var(--ink-2); letter-spacing: .02em;
}
.bench-wire::after { content: ""; position: absolute; right: -1px; top: 50%; margin-top: -6px; border: 6px solid transparent; border-left: 9px solid var(--frame); border-right: 0; }
.bench-out { min-width: 0; display: flex; flex-direction: column; background: var(--paper); }
.sheet-box { background: var(--sheet); padding: 0; flex: 1; display: flex; align-items: center; justify-content: center; position: relative; }
.sheet-box svg, .sheet-box img { display: block; width: 100%; height: auto; }
.redraw {
  border: 1px solid var(--rule); background: var(--paper); color: var(--ink-2); cursor: pointer; height: 24px; padding: 0 8px;
  font: 500 12px/1 var(--f-mono);
}
.redraw:hover { border-color: var(--ink); color: var(--ink); }
.bench-cap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 24px; padding: 12px 40px; border-top: 1px solid var(--frame); font-size: 14px; color: var(--ink-3); }
.bench-cap p { margin: 0; max-width: none; }

/* code highlighting (shared) */
pre .l { display: block; padding: 0 16px; border-left: 3px solid transparent; }
pre .l[data-ref] { cursor: default; }
pre .l.on { background: rgba(226, 180, 138, .14); border-left-color: var(--hl); }
pre .k { color: var(--code-k); } pre .s { color: var(--code-s); } pre .n { color: var(--code-n); } pre .b { color: var(--code-b); }
pre .c { color: var(--code-dim); font-style: italic; } pre .kw { color: var(--code-b); } pre .t { color: var(--code-k); } pre .op { color: var(--hl); }
pre .dim { color: var(--code-dim); }
pre .lv-error { color: #FF8F80; font-weight: 700; } pre .lv-warning { color: #F2C66D; font-weight: 700; } pre .lv-info { color: var(--code-k); }
pre .rule { color: var(--code-k); } pre .node { color: var(--code-n); }

/* the drawing animation (site.js adds .drawing on the sheet) */
.sheet-box .uw-hl line, .sheet-box .uw-hl polyline, .sheet-box .uw-hl polygon, .sheet-box .uw-hl rect,
.sheet-box .uw-hl ellipse, .sheet-box .uw-hl circle { stroke: var(--hl) !important; }
.sheet-box .uw-hl text { fill: var(--hl) !important; }

/* ---------------------------------------------------------------- sections: folio layout */
.folio { border-left: 1px solid var(--frame); border-right: 1px solid var(--frame); border-top: 1px solid var(--frame); display: grid; grid-template-columns: var(--label-col) minmax(0, 1fr); }
.folio-side { border-right: 1px solid var(--rule); padding: 32px 20px; display: flex; flex-direction: column; gap: 10px; }
.folio-no { font: 700 38px/1 var(--f-display); color: var(--ink); letter-spacing: -.03em; }
.folio-no small { font-size: 16px; color: var(--ink-3); font-weight: 500; letter-spacing: .02em; }
.folio-side .label { color: var(--accent); }
.folio-body { padding: 32px 40px 48px; min-width: 0; }
.folio-body > header { margin-bottom: 28px; max-width: 860px; }
.folio-body > header p { font-size: 19px; color: var(--ink-2); margin: 14px 0 0; }
.cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
.cols-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border: 1px solid var(--frame); }
.cols-3 > * { padding: 22px 22px 24px; }
.cols-3 > * + * { border-left: 1px solid var(--frame); }

/* figures: real drawings on white sheets */
figure { margin: 0; }
.fig { border: 1px solid var(--frame); background: var(--sheet); display: flex; flex-direction: column; }
.fig > a, .fig > .sheet { display: block; background: var(--sheet); }
.fig img { display: block; width: 100%; height: auto; }
.fig figcaption {
  display: grid; grid-template-columns: auto 1fr; gap: 0; border-top: 1px solid var(--frame); background: var(--paper);
  font-size: 14px; color: var(--ink-2); margin-top: auto;
}
.fig figcaption > * { padding: 8px 12px; }
.fig figcaption .fig-no { white-space: nowrap; border-right: 1px solid var(--frame); font: 600 13px/1.3 var(--f-mono); color: var(--ink); display: flex; align-items: center; }
.fig figcaption code { font-size: 12.5px; }

.seg { display: inline-flex; border: 1px solid var(--frame); margin: 0 0 14px; flex-wrap: wrap; }
.seg button {
  border: 0; background: transparent; color: var(--ink); cursor: pointer; min-height: 36px; padding: 0 12px;
  font: 500 14px/1 var(--f-text);
}
.seg button + button { border-left: 1px solid var(--frame); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.swatch { display: inline-block; width: 18px; height: 3px; vertical-align: middle; margin-right: 6px; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 16px; font: 500 13px/1.6 var(--f-mono); color: var(--ink-2); margin-top: 10px; }

/* code blocks */
.code { background: var(--code-bg); color: var(--code-ink); border: 1px solid var(--frame); min-width: 0; display: flex; flex-direction: column; }
.code .tab { display: flex; justify-content: space-between; align-items: center; height: 36px; padding: 0 0 0 14px; border-bottom: 1px solid rgba(255,255,255,.12); font: 500 12px/1 var(--f-mono); color: var(--code-dim); }
.code .tab .copy { border-left-color: rgba(255,255,255,.18); height: 100%; color: var(--code-dim); }
.code .tab .copy:hover { background: rgba(255,255,255,.06); color: var(--code-ink); }
.code pre { margin: 0; padding: 14px 16px 16px; overflow: auto; font-size: 13px; line-height: 1.6; }
.code pre.lines { padding: 14px 0 16px; }

ul.ticks { list-style: none; padding: 0; margin: 0 0 1em; }
ul.ticks li { position: relative; padding-left: 26px; margin: 0 0 .55em; max-width: 64ch; }
ul.ticks li::before { /* a conductor stroke, IEC style */
  content: ""; position: absolute; left: 2px; top: .72em; width: 14px; height: 2px; background: var(--ink); transform: rotate(-30deg);
}
dl.spec { display: grid; grid-template-columns: max-content 1fr; margin: 0; border-top: 1px solid var(--rule); }
dl.spec dt, dl.spec dd { margin: 0; padding: 9px 0; border-bottom: 1px solid var(--rule); }
dl.spec dt { padding-right: 20px; font: 600 11px/1.7 var(--f-display); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.note { border-left: 3px solid var(--l3); padding: 2px 0 2px 14px; color: var(--ink-2); font-size: 15px; }

/* data tables (CSV excerpts) */
.table-wrap { overflow-x: auto; border: 1px solid var(--frame); background: var(--sheet); color: #15181C; }
.table-wrap table { border-collapse: collapse; width: 100%; font: 400 13px/1.3 var(--f-mono); }
.table-wrap th, .table-wrap td { padding: 7px 10px; text-align: left; border-bottom: 1px solid #E2DDD2; white-space: nowrap; }
.table-wrap th { font: 600 10.5px/1.2 var(--f-display); letter-spacing: .07em; text-transform: uppercase; color: #5E636B; background: #F5F3EE; border-bottom: 1px solid #15181C; }
.table-wrap td:first-child { font-weight: 700; }
.table-wrap caption { caption-side: bottom; text-align: left; padding: 8px 10px; font: 400 12px/1.4 var(--f-mono); color: #5E636B; border-top: 1px solid #E2DDD2; }

/* gallery */
.gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--frame); border-left: 1px solid var(--frame); }
.gallery li { list-style: none; border-right: 1px solid var(--frame); border-bottom: 1px solid var(--frame); }
.gallery a { display: flex; flex-direction: column; height: 100%; text-decoration: none; color: var(--ink); }
.gallery .thumb { background: var(--sheet); aspect-ratio: 16 / 10; display: block; }
.gallery .thumb img { width: 100%; height: 100%; object-fit: contain; display: block; }
.gallery .meta { display: grid; grid-template-columns: 44px 1fr auto; align-items: center; border-top: 1px solid var(--frame); font-size: 15px; }
.gallery .meta > * { padding: 9px 12px; }
.gallery .num { border-right: 1px solid var(--rule); font: 600 13px/1 var(--f-mono); color: var(--ink-3); padding: 9px 0; text-align: center; }
.gallery .tag { font: 500 11px/1 var(--f-mono); color: var(--ink-3); }
.gallery a:hover .meta, .gallery a:focus-visible .meta { background: var(--ink); color: var(--paper); }
.gallery a:hover .num, .gallery a:hover .tag { color: var(--paper); }
.gallery ul, ul.gallery { padding: 0; margin: 0; }

/* viewer screenshot */
.screen { border: 1px solid var(--frame); background: var(--paper-2); }
.screen img { display: block; width: 100%; height: auto; }

/* steps (get started) */
ol.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--frame); }
ol.steps li { counter-increment: s; padding: 20px 22px 24px; min-width: 0; }
ol.steps li + li { border-left: 1px solid var(--frame); }
ol.steps li::before { content: counter(s, decimal-leading-zero); display: block; font: 700 28px/1 var(--f-display); letter-spacing: -.02em; color: var(--accent); margin-bottom: 10px; }
ol.steps .code { margin-top: 12px; }
ol.steps pre { white-space: pre-wrap; word-break: normal; overflow-wrap: normal; }

/* ---------------------------------------------------------------- footer: title block */
.site-foot { margin-top: 0; }
.titleblock { border: 1px solid var(--frame); border-right: 0; border-bottom: 0; border-top-width: 2px; display: grid; grid-template-columns: 1.4fr 2.2fr 1fr 1fr 1fr; font-size: 14px; }
.tb { border-right: 1px solid var(--frame); border-bottom: 1px solid var(--frame); padding: 6px 10px 8px; min-width: 0; }
.tb .label { font-size: 9.5px; display: block; margin-bottom: 3px; letter-spacing: .08em; }
.tb strong { font: 700 18px/1.25 var(--f-text); letter-spacing: -.01em; }
.tb a { color: var(--ink); }
.tb a:hover { color: var(--accent); }
.tb-logo { grid-row: span 2; display: flex; align-items: center; justify-content: center; }
.tb-logo svg { width: 150px; height: auto; color: var(--ink); }
.tb-title { grid-row: span 2; display: flex; flex-direction: column; justify-content: flex-start; }
.tb-title strong { margin-block: auto; align-self: center; text-align: center; }
.tb-links { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 6px 22px; padding: 10px; }
.foot-note { font-size: 13px; color: var(--ink-3); padding: 14px 0 28px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.foot-note p { margin: 0; max-width: none; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1080px) {
  .hero-top { grid-template-columns: 1fr; padding: 40px 28px 32px; align-items: start; }
  .bench { grid-template-columns: 1fr; }
  .bench-wire { height: 48px; border: 0; border-top: 1px solid var(--frame); border-bottom: 1px solid var(--frame); background: linear-gradient(var(--frame), var(--frame)) center / 1px 100% no-repeat; }
  .bench-wire span { writing-mode: horizontal-tb; transform: none; padding: 4px 10px; }
  .bench-wire::after { right: auto; top: auto; bottom: -1px; left: 50%; margin: 0 0 0 -6px; border: 6px solid transparent; border-top: 9px solid var(--frame); border-bottom: 0; }
  .bench-src { order: 3; }
  .bench-wire { order: 2; }
  .bench-out { order: 1; }
  .bench-src pre { max-height: 420px; }
  .bench-cap { padding: 12px 28px; }
  .folio { grid-template-columns: 1fr; }
  .folio-side { flex-direction: row; align-items: baseline; gap: 16px; border-right: 0; border-bottom: 1px solid var(--rule); padding: 18px 28px 14px; }
  .folio-no { font-size: 30px; }
  .folio-body { padding: 26px 28px 40px; }
  .cols { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .titleblock { grid-template-columns: 1fr 1fr 1fr; }
  .tb-logo, .tb-title { grid-row: auto; }
  .tb-title { grid-column: span 2; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .lead { font-size: 18px; }
  .cols-3, ol.steps { grid-template-columns: 1fr; }
  .cols-3 > * + *, ol.steps li + li { border-left: 0; border-top: 1px solid var(--frame); }
  .ruler { grid-template-columns: repeat(4, 1fr); }
  .ruler span:nth-child(n+5) { display: none; }
  .titleblock { grid-template-columns: 1fr 1fr; }
  .tb-title { grid-column: span 2; }
  .tb-logo { grid-column: span 2; }
}
@media (max-width: 520px) {
  .frame { padding: 0 12px; }
  .hero-top { padding: 28px 16px 24px; }
  .bench-cap { padding: 10px 16px; }
  .folio-side { padding: 14px 16px 10px; }
  .folio-body { padding: 22px 16px 32px; }
  .gallery { grid-template-columns: 1fr; }
  .folio-body > header p { font-size: 17px; }
  .cmd code { font-size: 13.5px; padding: 12px 10px; }
}

@media print {
  .site-head, .redraw, .copy, .seg { display: none; }
  body { background: #fff; }
}
.small { font-size: 14px; color: var(--ink-3); }
@media (hover: none) { .hover-hint { display: none; } }
.cols > *, .cols-3 > *, .fig { min-width: 0; }
figcaption code, dd code, .small code, .folio-body p code { white-space: normal; overflow-wrap: anywhere; }
.fig figcaption { grid-template-columns: auto 1fr auto; }
.fig figcaption .fig-open { border-left: 1px solid var(--frame); color: var(--ink); font-weight: 600; white-space: nowrap; display: flex; align-items: center; text-decoration: none; }
.fig figcaption .fig-open::after { content: " →"; font-family: var(--f-mono); margin-left: 6px; }
.fig figcaption .fig-open:hover { background: var(--ink); color: var(--paper); }
.tab-open { color: var(--ink-2); margin-left: 8px; }
.tab-open:hover { color: var(--accent); }
@media (max-width: 520px) {
  .fig figcaption { grid-template-columns: auto 1fr; }
  .fig figcaption .fig-open { grid-column: 1 / -1; border-left: 0; border-top: 1px solid var(--frame); }
}
.nav > a { white-space: nowrap; }
.nav .short { display: none; }
@media (max-width: 520px) { .tab-open { display: none; } }
@media (max-width: 420px) { .nav .long { display: none; } .nav .short { display: inline; } .nav { gap: 12px; } }

/* ---------------------------------------------------------------- theme toggle */
.theme-toggle {
  display: none; align-items: center; justify-content: center; width: 38px; height: 32px; padding: 0;
  border: 1px solid var(--frame); background: transparent; color: var(--ink); cursor: pointer;
}
.js .theme-toggle { display: inline-flex; }
.theme-toggle svg { width: 18px; height: 18px; display: block; }
.theme-toggle:hover { background: var(--paper-2); }
.theme-toggle:active { background: var(--rule-2); }
.theme-toggle:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.theme-toggle[aria-pressed="true"] .tt-fill { fill: currentColor; }

/* ---------------------------------------------------------------- 404 page */
.notfound { border-left: 1px solid var(--frame); border-right: 1px solid var(--frame); border-bottom: 1px solid var(--frame); padding: 64px 40px 56px; }
.notfound h1 { font-size: clamp(30px, 4.4vw, 52px); margin: 14px 0 18px; }
.legal { max-width: none; }
.legal h2 { font-size: clamp(20px, 2.2vw, 24px); margin: 36px 0 10px; }
.legal p { max-width: 72ch; }
@media (max-width: 520px) { .notfound { padding: 40px 18px; } }
.tb-links a { text-transform: lowercase; }

/* section 07: a ChatGPT exchange with the uniwire app (replayed once by site.js, static without JS) */
.chat { border: 1px solid var(--frame); background: var(--paper); margin-bottom: 32px; }
.chat-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 16px; padding: 10px 16px; border-bottom: 1px solid var(--frame); background: var(--paper-2); }
.chat-title { font: 600 14px/1.3 var(--f-text); }
.chat-meta { font: 400 13px/1.3 var(--f-mono); color: var(--ink-3); }
.chat-replay { margin-left: auto; font: 500 12px/1 var(--f-mono); color: var(--ink-2); background: none; border: 1px solid var(--rule); padding: 5px 9px; cursor: pointer; }
.chat-replay:hover { color: var(--accent); border-color: var(--accent); }
.chat-body { padding: 22px 20px 6px; display: flex; flex-direction: column; gap: 18px; max-width: 820px; margin: 0 auto; }
.msg-user { display: flex; justify-content: flex-end; }
.bubble { margin: 0; max-width: 78%; padding: 10px 16px; border-radius: 18px; background: var(--paper-2); color: var(--ink); border: 1px solid var(--rule-2); font-size: 15.5px; line-height: 1.5; }
.mention { font-weight: 600; color: var(--link); }
.msg-bot { font-size: 15.5px; line-height: 1.6; color: var(--ink); }
.thinking { margin: 0 0 8px; font-size: 14px; color: var(--ink-3); }
.thinking .live { display: none; }
.chat.playing .thinking.thinking-live .live { display: inline; }
.chat.playing .thinking.thinking-live .done { display: none; }
.thinking .live::after { content: "…"; animation: chat-dots 1s steps(3, end) infinite; display: inline-block; width: 1.2em; overflow: hidden; vertical-align: bottom; }
@keyframes chat-dots { from { width: 0; } to { width: 1.2em; } }
.calls { list-style: none; margin: 0 0 14px; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.calls li { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; font: 400 13px/1.4 var(--f-mono); color: var(--ink-2); }
.calls .app { font: 600 12px/1 var(--f-text); padding: 4px 8px; border-radius: 999px; border: 1px solid var(--rule); color: var(--ink); background: var(--paper-2); }
.badge { font: 600 11px/1 var(--f-text); padding: 4px 8px; border: 1px solid #2F7A36; background: #2F7A36; color: #fff; }
.answer p { margin: 0 0 12px; max-width: none; }
.chat-link { font-weight: 600; }
.chat-fig { margin: 8px 20px 18px; }
.chat-note { margin: 0 20px 18px; max-width: none; }
/* replay: hidden until shown in sequence; only when site.js armed the block (motion allowed) */
.chat.armed .anim { opacity: 0; transform: translateY(6px); transition: opacity .3s ease, transform .3s ease; }
.chat.armed .anim.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .chat.armed .anim { opacity: 1; transform: none; transition: none; } }
@media (max-width: 720px) { .bubble { max-width: 100%; } .chat-body { padding: 18px 14px 4px; } .chat-fig, .chat-note { margin-left: 14px; margin-right: 14px; } }