/* Living Ink — bcr.co
   Tokens · base · type · marks · layout · head & foot · components · modes · motion.
   The reasoning behind each value is in DESIGN.md. The hero portrait carries its
   own styles in source/living-ink.html; these tokens are the same numbers. */

:root {
  --paper: #f1efe6;
  --paper-plate: #f8f7f1;
  --paper-deep: #e9e6da;
  --ink: #191b18;
  --ink-2: rgba(25, 27, 24, .64);
  --ink-3: rgba(25, 27, 24, .42);
  --rule: rgba(25, 27, 24, .18);
  --accent: #bc3f20;

  --signal-ground: #11150f;
  --signal-ink: #d4ef90;
  --signal-rule: #3b4530;
  --signal-plate: #171c13;
  --offset-red: #d64731;
  --offset-blue: #243b91;
  --mint: #8fd3ad;

  --sans: "Public Sans", Arial, Helvetica, sans-serif;
  --mono: 'Courier New', Courier, monospace;

  --gutter: 34px;
  --col-gap: 24px;
  --section: 128px;
  --block: 64px;
  --head-h: 64px;

  --ease: cubic-bezier(.16, 1, .3, 1);
  --fast: 160ms;
  --slow: 700ms;
}
@media (max-width: 650px) {
  :root { --gutter: 23px; --section: 88px; --block: 44px; --head-h: 66px; }
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { background: var(--paper); color-scheme: light; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.55 var(--sans); -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4, p, figure, dl, dd, ol, ul { margin: 0; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
::selection { background: var(--accent); color: var(--paper); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
[id] { scroll-margin-top: calc(var(--head-h) + 12px); }
.skip { position: absolute; left: var(--gutter); top: -60px; z-index: 100; padding: 10px 14px; background: var(--ink); color: var(--paper); font: 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.skip:focus { top: 12px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- type ---------- */
.t-display   { font-size: clamp(60px, 10.8vw, 124px); line-height: .88; font-weight: 700; letter-spacing: -.065em; }
.t-statement { font-size: clamp(40px, 6.2vw, 92px); line-height: .95; font-weight: 400; letter-spacing: -.045em; text-wrap: balance; }
.t-h1        { font-size: clamp(44px, 6.4vw, 84px); line-height: .92; font-weight: 700; letter-spacing: -.045em; text-wrap: balance; }
.t-h2        { font-size: clamp(32px, 4vw, 52px); line-height: .98; font-weight: 400; letter-spacing: -.045em; text-wrap: balance; }
.t-h3        { font-size: 24px; line-height: 1.15; font-weight: 700; letter-spacing: -.02em; }
.t-lead      { font-size: clamp(20px, 2vw, 24px); line-height: 1.35; letter-spacing: -.01em; }
.t-small     { font-size: 14px; line-height: 1.5; }
.measure     { max-width: 62ch; }
.ink-2       { color: var(--ink-2); }
.ink-3       { color: var(--ink-3); }
.prose > * + * { margin-top: 1.1em; }
.prose a, .link { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .18em; transition: color var(--fast); }
.prose a:hover, .link:hover { color: var(--accent); }

/* ---------- marks ---------- */
.mark { font: 11px/1.6 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.mark--lg { font-size: 13px; }
.mark a { transition: color var(--fast); }
.mark a:hover { color: var(--accent); }
.live-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); vertical-align: middle; margin: -2px 9px 0 0; }
.btn { display: inline-block; padding: 11px 14px; border: 1px solid currentColor; background: transparent; font: 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; min-height: 34px; cursor: pointer; transition: color var(--fast); }
.btn:hover { color: var(--accent); }
@media (pointer: coarse) { .btn { min-height: 44px; padding-block: 15px; } }

/* ---------- layout ---------- */
.wrap { padding-inline: var(--gutter); }
.section { padding-block: var(--section); }
.sec-head { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; padding-bottom: 14px; border-bottom: 1px solid var(--ink); margin-bottom: var(--block); }
.sec-head__note { text-align: right; color: var(--ink-2); }
.rule { border: 0; border-top: 1px solid var(--rule); margin: 0; }
.block { display: flex; flex-direction: column; gap: 24px; }
.block > .t-h2 { max-width: 22ch; }

/* ---------- site head & foot ---------- */
.site-head { position: sticky; top: 0; z-index: 50; display: flex; align-items: center; justify-content: space-between; gap: 16px; height: var(--head-h); padding-inline: var(--gutter); background: var(--paper); border-bottom: 1px solid transparent; transition: border-color var(--fast); }
.site-head.is-scrolled { border-bottom-color: var(--rule); }
.site-mark { --ls: -1.8px; position: relative; display: inline-block; font-size: 29px; font-weight: 700; letter-spacing: var(--ls); line-height: 1; white-space: nowrap; }
.site-mark .wm__x { display: inline-block; white-space: pre; }
.site-mark .wm__k, .site-mark .wm__i { position: relative; display: inline-block; }
.site-mark__dot, html:not(.js) .site-mark .wm__i::after { content: ""; position: absolute; top: .09em; width: .145em; height: .145em; border-radius: 50%; background: var(--accent); }
.site-mark .wm__end .site-mark__dot { left: calc(100% - var(--ls) + .17em); }
.site-mark .wm__i .site-mark__dot, html:not(.js) .site-mark .wm__i::after { left: calc(50% - var(--ls) / 2 - .0725em); }
html:not(.js) .site-mark__dot { display: none; }
.js .site-mark:not(.is-open) .wm__x { width: 0; opacity: 0; }
.js .site-mark.is-measuring .wm__x { width: auto !important; transition: none !important; }
.js .site-mark .wm__x { clip-path: inset(-.25em -2px -.25em 0); transition: width .9s var(--ease), opacity .4s var(--ease); }
.js .site-mark.is-open .wm__x { transition: width .9s var(--ease), opacity .6s var(--ease) .12s; }
.js .site-mark__dot { transition: left .9s var(--ease); }
.site-mark.no-anim .wm__x, .site-mark.no-anim .site-mark__dot { transition: none !important; }
.site-nav { display: flex; gap: 26px; }
.site-nav a { position: relative; padding: 6px 0; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 2px; border-top: 1px solid currentColor; transform: scaleX(0); transform-origin: left; transition: transform var(--fast) var(--ease); }
.site-nav a:hover::after, .site-nav a[aria-current]::after { transform: scaleX(1); }
@media (max-width: 650px) {
  .site-head { height: auto; flex-wrap: wrap; row-gap: 0; padding-block: 10px 6px; }
  .site-mark { --ls: -1.4px; font-size: 24px; }
  .site-nav { flex-basis: 100%; justify-content: space-between; gap: 12px; }
  .site-nav a { padding: 4px 0; }
}

.site-foot { padding-block: var(--block) 32px; border-top: 1px solid var(--ink); }
.site-foot__row { display: flex; justify-content: space-between; gap: 16px 32px; flex-wrap: wrap; }
.site-foot__row + .site-foot__row { margin-top: 40px; color: var(--ink-2); }
.site-foot__links { display: flex; gap: 22px; flex-wrap: wrap; }
.site-foot a { transition: color var(--fast); }
.site-foot a:hover { color: var(--accent); }

/* ---------- intro ---------- */
.intro { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--block) var(--col-gap); }
.intro__statement { grid-column: 1 / 11; }
.intro__lead { grid-column: 6 / 13; }
.intro__points { grid-column: 6 / 13; list-style: none; padding: 0; align-self: end; }
.intro__points li { display: flex; gap: 16px; padding: 14px 0; border-top: 1px solid var(--rule); }
.intro__points li:last-child { border-bottom: 1px solid var(--rule); }
.intro__points li::before { content: "—"; color: var(--ink-2); flex: none; }
.intro__domains { grid-column: 1 / 13; display: flex; flex-wrap: wrap; gap: 10px 28px; color: var(--ink-2); }
@media (max-width: 900px) { .intro__statement, .intro__lead, .intro__points { grid-column: 1 / 13; } }

/* ---------- work rows ---------- */
.work-list { display: flex; flex-direction: column; }
.work-row { display: grid; grid-template-columns: 5fr 7fr; gap: 48px; align-items: center; padding: var(--block) 0; border-top: 1px solid var(--rule); }
.work-row:first-child { border-top: 0; padding-top: 0; }
.work-row:nth-child(even) .work-row__text { order: 2; }
.work-row__text { display: flex; flex-direction: column; gap: 22px; }
.work-row__title { transition: text-shadow var(--fast); }
.work-row:hover .work-row__title, .work-row:focus-visible .work-row__title { text-shadow: -2px 0 var(--offset-red), 2px 0 var(--offset-blue); }
.work-row__dek { color: var(--ink-2); max-width: 40ch; font-size: 19px; line-height: 1.4; }
.work-row__stat { display: flex; flex-direction: column; gap: 6px; padding-top: 16px; border-top: 1px solid var(--rule); max-width: 40ch; }
.work-row__stat b { font-size: clamp(32px, 3vw, 44px); line-height: 1; letter-spacing: -.04em; }
.work-row__stat .mark { color: var(--ink-2); }
.work-row__cta { color: var(--ink-2); transition: color var(--fast); }
.work-row__cta .live-dot { opacity: 0; transition: opacity var(--fast); }
.work-row:hover .work-row__cta { color: var(--accent); }
.work-row:hover .work-row__cta .live-dot { opacity: 1; }
.work-note { display: flex; justify-content: space-between; gap: 12px 24px; flex-wrap: wrap; padding-top: 28px; border-top: 1px solid var(--rule); color: var(--ink-2); }
.work-note p { max-width: 62ch; }
@media (max-width: 900px) { .work-row { grid-template-columns: 1fr; gap: 28px; } .work-row:nth-child(even) .work-row__text { order: 0; } }

/* ---------- plates ---------- */
.plate { position: relative; padding: 16px; }
.plate::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .6;
  background:
    linear-gradient(var(--ink), var(--ink)) left 0 top 16px / 12px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) left 16px top 0 / 1px 12px no-repeat,
    linear-gradient(var(--ink), var(--ink)) right 0 top 16px / 12px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) right 16px top 0 / 1px 12px no-repeat,
    linear-gradient(var(--ink), var(--ink)) left 0 bottom 16px / 12px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) left 16px bottom 0 / 1px 12px no-repeat,
    linear-gradient(var(--ink), var(--ink)) right 0 bottom 16px / 12px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) right 16px bottom 0 / 1px 12px no-repeat;
}
.plate__frame { background: var(--paper-plate); border: 1px solid var(--rule); padding: clamp(10px, 1.6vw, 22px); }
.plate figcaption { margin-top: 12px; color: var(--ink-2); }
.plate--hero { margin-top: var(--block); }
.plate--bare { padding: 0; }
.plate--bare::before { display: none; }
.plate--tight .plate__frame { padding: 0; }
.thumb { display: block; position: relative; }
.thumb img { display: block; width: 100%; height: auto; }
.thumb__color { position: absolute; inset: 0; opacity: 0; transition: opacity .35s var(--ease); }
.thumb:hover .thumb__color, .work-row:focus-visible .thumb__color { opacity: 1; }
.plate--narrow { max-width: 720px; }
.plates-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--col-gap); align-items: start; }
@media (max-width: 650px) { .plates-2 { grid-template-columns: 1fr; } }

/* ---------- principles ---------- */
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--block) var(--col-gap); margin-top: var(--block); }
.principle { display: flex; flex-direction: column; gap: 16px; padding-top: 18px; border-top: 1px solid var(--rule); }
.principle p { color: var(--ink-2); }
@media (max-width: 900px) { .principles { grid-template-columns: 1fr; gap: 32px; } }

/* ---------- signal mode (experiments) ---------- */
.signal {
  --paper: var(--signal-ground); --paper-plate: var(--signal-plate);
  --ink: var(--signal-ink); --ink-2: rgba(212, 239, 144, .72); --ink-3: rgba(212, 239, 144, .45);
  --rule: var(--signal-rule); --accent: var(--signal-ink);
  position: relative; overflow: hidden; background: var(--paper); color: var(--ink);
}
.signal ::selection { background: var(--signal-ink); color: var(--signal-ground); }

/* ---------- time-out (mint poster) ---------- */
.timeout { --paper: var(--mint); --paper-plate: var(--mint); position: relative; overflow: hidden; background: var(--mint); color: var(--ink); }
.timeout__orbit { position: absolute; z-index: 0; width: min(70vw, 820px); aspect-ratio: 1; border: 1px solid rgba(25, 27, 24, .35); border-radius: 50%; right: -14%; top: -30%; pointer-events: none; }
.timeout > .wrap { position: relative; z-index: 1; }
.timeout__title { font-size: clamp(64px, 15.5vw, 212px); line-height: .84; font-weight: 700; letter-spacing: -.065em; }
.timeout__lead { margin-top: 40px; font-size: clamp(22px, 2.6vw, 34px); line-height: 1.25; max-width: 30ch; }
.timeout__link { display: inline-flex; align-items: center; gap: .25em; font-weight: 700; color: var(--ink); text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: .14em; transition: color var(--fast); }
.timeout__link:hover { color: var(--accent); }
.timeout__link svg { width: .7em; height: .7em; }
.timeout__foot { margin-top: var(--section); display: flex; align-items: center; gap: 24px; }
.timeout__foot::before, .timeout__foot::after { content: ""; flex: 1; border-top: 1px solid var(--ink); }
.timeout__more { margin-top: 20px; text-align: center; font-size: 18px; font-weight: 700; }
.circle-cue { display: inline-block; color: var(--ink); line-height: 0; border-radius: 50%; transition: background var(--fast), color var(--fast); }
.circle-cue:hover, .circle-cue:focus-visible { background: var(--ink); color: var(--mint); }
.signal-orbit { position: absolute; z-index: 0; width: min(80vw, 900px); aspect-ratio: 1; border: 1px solid var(--signal-rule); border-radius: 50%; right: -18%; top: 8%; pointer-events: none; }
.signal > .wrap { position: relative; z-index: 1; }
.signal__lead { margin-top: 28px; color: var(--ink-2); }
.experiments { display: grid; grid-template-columns: 1fr 1fr; gap: 48px var(--col-gap); margin-top: var(--block); }
.experiment { display: flex; flex-direction: column; gap: 18px; }
.experiment__text { display: flex; flex-direction: column; gap: 10px; }
.experiment__text p { color: var(--ink-2); }
.experiment .t-h3 { transition: text-decoration-color var(--fast); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .18em; text-decoration-color: transparent; }
.experiment:hover .t-h3 { text-decoration-color: currentColor; }
.neon-grid { position: relative; }
.neon-grid canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: none; }
.neon-grid.is-live img { opacity: 0; }
.neon-grid.is-live canvas { display: block; }
.lab-list { list-style: none; padding: 0; margin-top: var(--block); border-top: 1px solid var(--rule); }
.lab-row { display: grid; grid-template-columns: 2fr 3fr 2fr; gap: var(--col-gap); padding: 18px 0; border-bottom: 1px solid var(--rule); align-items: baseline; }
.lab-row__title { font-size: 19px; letter-spacing: -.02em; }
.lab-row__desc { color: var(--ink-2); font-size: 16px; }
.lab-row__note { color: var(--ink-3); }
.lab-row:hover .lab-row__title { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .18em; }
@media (max-width: 900px) { .experiments { grid-template-columns: 1fr; } .lab-row { grid-template-columns: 1fr; gap: 4px; } }

/* ---------- about & contact ---------- */
.about { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--block) var(--col-gap); }
.about__statement { grid-column: 1 / 8; }
.facts { display: grid; grid-template-columns: auto 1fr; gap: 14px 24px; align-content: start; }
.about .facts { grid-column: 9 / 13; }
.facts dt { color: var(--ink-2); padding-top: 2px; }
.facts dd { font: 15px/1.5 var(--sans); letter-spacing: 0; text-transform: none; }
.facts--aside { grid-template-columns: 1fr; gap: 4px 0; }
.facts--aside dt { margin-top: 14px; }
.facts--aside dt:first-child { margin-top: 0; }
@media (max-width: 900px) { .about__statement, .about .facts { grid-column: 1 / 13; } }

.contact__line { margin-top: 36px; }
.contact__email { display: inline-block; word-break: break-all; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: .12em; transition: color var(--fast), text-shadow var(--fast); }
.contact__email:hover { color: var(--accent); }
.contact__links { display: flex; gap: 28px; flex-wrap: wrap; margin-top: 40px; }

/* ---------- case studies ---------- */
.case-head { padding-top: var(--block); display: flex; flex-direction: column; gap: 28px; }
.case-head__marks { display: flex; flex-wrap: wrap; color: var(--ink-2); }
.case-head__marks span + span::before { content: "·"; margin: 0 10px; }
.case-head .t-h1 { max-width: 16ch; }
.case-head .t-lead { max-width: 62ch; }
.case-body { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--col-gap); padding-block: var(--section); }
.case-aside { grid-column: 1 / 4; align-self: start; position: sticky; top: calc(var(--head-h) + 24px); display: flex; flex-direction: column; gap: 28px; }
.aside-about { display: flex; flex-direction: column; gap: 10px; padding-top: 24px; border-top: 1px solid var(--rule); }
.aside-about p { color: var(--ink-2); }
.case-main { grid-column: 5 / 13; display: flex; flex-direction: column; gap: var(--section); min-width: 0; }
.case-main .t-h2 { font-size: clamp(28px, 3.2vw, 44px); }
.case-main p { max-width: 62ch; }
@media (max-width: 900px) { .case-aside { grid-column: 1 / 13; position: static; } .case-main { grid-column: 1 / 13; } }

.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--col-gap); }
.trio__item { display: flex; flex-direction: column; gap: 10px; padding-top: 16px; border-top: 1px solid var(--rule); }
.trio__item h3 { font-size: 19px; line-height: 1.2; font-weight: 700; letter-spacing: -.02em; }
.trio__item p { color: var(--ink-2); font-size: 16px; }
@media (max-width: 900px) { .trio { grid-template-columns: 1fr; } }

.compare { display: grid; grid-template-columns: 1fr 1fr; gap: var(--col-gap); }
.compare__item { display: flex; flex-direction: column; gap: 12px; padding-top: 16px; border-top: 1px solid var(--rule); }
.compare__item p { font-size: 20px; line-height: 1.3; letter-spacing: -.01em; }
@media (max-width: 650px) { .compare { grid-template-columns: 1fr; } }

.band { background: var(--ink); color: var(--paper); padding: clamp(28px, 4vw, 56px); display: flex; flex-direction: column; gap: 22px; }
.band .t-h2 { font-weight: 700; max-width: 16ch; }
.band p { color: rgba(241, 239, 230, .78); }
.band .mark { color: rgba(241, 239, 230, .6); }

.steps { list-style: none; padding: 0; counter-reset: step; border-top: 1px solid var(--rule); }
.steps li { display: grid; grid-template-columns: 40px 1fr; gap: 16px; padding: 11px 0; border-bottom: 1px solid var(--rule); color: var(--ink-2); font-size: 16px; }
.steps li::before { counter-increment: step; content: counter(step, decimal-leading-zero); font: 11px/1.7 var(--mono); letter-spacing: .08em; color: var(--ink-3); }

.decisions { list-style: none; padding: 0; display: flex; flex-direction: column; }
.decision { display: grid; grid-template-columns: 120px 1fr; gap: var(--col-gap); padding: 36px 0; border-top: 1px solid var(--rule); }
.decision:last-child { border-bottom: 1px solid var(--rule); }
.decision__num { color: var(--ink-2); padding-top: 6px; }
.decision__body { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.decision__body .plate { margin-top: 12px; }
.decision__list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.decision__list li { display: grid; grid-template-columns: 20px 1fr; gap: 10px; }
.decision__list li::before { content: "—"; color: var(--ink-3); }
@media (max-width: 650px) { .decision { grid-template-columns: 1fr; gap: 8px; } }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: var(--col-gap); }
.stat { display: flex; flex-direction: column; gap: 10px; padding-top: 16px; border-top: 1px solid var(--ink); min-width: 0; }
.stat b { font-size: clamp(36px, 3.4vw, 48px); line-height: .95; letter-spacing: -.04em; font-weight: 700; overflow-wrap: anywhere; }
.stat .mark { color: var(--ink-2); }
.stat p { color: var(--ink-2); font-size: 15px; }
@media (max-width: 650px) { .stats { grid-template-columns: 1fr; } }

.results { list-style: none; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: var(--col-gap); }
.result { display: flex; flex-direction: column; gap: 8px; padding-top: 16px; border-top: 1px solid var(--rule); }
.result h3 { font-size: 19px; line-height: 1.2; font-weight: 700; letter-spacing: -.02em; }
.result p { color: var(--ink-2); font-size: 16px; }
@media (max-width: 650px) { .results { grid-template-columns: 1fr; } }

.next { display: flex; flex-direction: column; gap: 14px; padding: var(--block) 0; border-top: 1px solid var(--ink); }
.next .mark { color: var(--ink-2); }
.next .t-h2 { transition: text-shadow var(--fast); }
.next:hover .t-h2 { text-shadow: -2px 0 var(--offset-red), 2px 0 var(--offset-blue); }

/* ---------- design-language page ---------- */
.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: var(--col-gap); }
.swatch { display: flex; flex-direction: column; gap: 10px; }
.swatch i { display: block; height: 96px; border: 1px solid var(--rule); }
.swatch .mark { color: var(--ink-2); }
.spec { display: grid; grid-template-columns: 220px 1fr; gap: var(--col-gap); padding: 28px 0; border-top: 1px solid var(--rule); align-items: baseline; }
.spec__meta { color: var(--ink-2); }
.spec__meta b { display: block; color: var(--ink); font-weight: 400; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.spec-table th { text-align: left; font-weight: 400; color: var(--ink-2); padding: 0 16px 10px 0; border-bottom: 1px solid var(--ink); }
.spec-table td { padding: 10px 16px 10px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
.demo-row { display: flex; flex-wrap: wrap; align-items: center; gap: 24px 40px; }
@media (max-width: 650px) { .spec { grid-template-columns: 1fr; gap: 8px; } }

/* ---------- motion ---------- */
.living-rule { height: 96px; color: var(--ink); }
.living-rule canvas { display: block; width: 100%; height: 100%; }
.js [data-reveal] { opacity: 0; transform: translateY(10px); transition: opacity var(--slow) var(--ease), transform var(--slow) var(--ease); }
.js [data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { transition-duration: 0ms !important; }
}

/* ---------- 404: one of three treatments per load (html[data-nf]) ---------- */
.nf { display: none; min-height: calc(100vh - var(--head-h)); flex-direction: column; justify-content: center; padding-block: var(--block); }
html[data-nf="b"] .nf-b, html[data-nf="c"] .nf-c, html[data-nf="d"] .nf-d, html:not([data-nf]) .nf-b { display: flex; }
.nf-b { --paper: #eee8dc; background: var(--paper); }
.nf-b__num { position: relative; display: inline-block; font: 700 clamp(140px, 30vw, 400px)/.85 var(--sans); letter-spacing: -.07em; color: transparent; user-select: none; }
.nf-b__num::before, .nf-b__num::after { content: "404"; position: absolute; inset: 0; mix-blend-mode: multiply; transition: transform .6s var(--ease), color .6s var(--ease); }
.nf-b__num::before { color: var(--offset-red); transform: translate(-.045em, -.03em); }
.nf-b__num::after { color: var(--offset-blue); transform: translate(.045em, .03em); }
.nf-b__num:hover::before, .nf-b__num:hover::after { transform: none; color: var(--ink); }
.nf-c__canvas { display: block; width: 100%; height: clamp(220px, 34vw, 460px); color: var(--ink); }
.nf-c__canvas canvas { display: block; width: 100%; height: 100%; }
.nf-d { position: relative; overflow: hidden; }
.nf-d .wrap { position: relative; z-index: 1; }
.nf-d__num { font: 700 clamp(140px, 30vw, 400px)/.85 var(--sans); letter-spacing: -.07em; color: var(--ink); }