/* bitryonix — signal trace system
   Static HTML, one stylesheet, self-hosted fonts, no third-party requests. */

@font-face {
  font-family: "Plex Cond";
  src: url("assets/fonts/ibm-plex-sans-cond-500.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Space Grotesk";
  src: url("assets/fonts/space-grotesk-var.woff2") format("woff2");
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
}

@font-face {
  font-family: "Plex Cond";
  src: url("assets/fonts/ibm-plex-sans-cond-600.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "Instrument Serif";
  src: url("assets/fonts/instrument-serif-400.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Plex Mono";
  src: url("assets/fonts/ibm-plex-mono-400.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Plex Mono";
  src: url("assets/fonts/ibm-plex-mono-600.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

:root {
  --paper: #F2EEE4;
  --signal: #981329;
  --bitcoin-orange: #F7931A;
  --ink: #11100E;
  --text: var(--ink);
  --sans: "Plex Cond", "Arial Narrow", sans-serif;
  --body: "Space Grotesk", Arial, sans-serif;
  --serif: var(--body);
  --mono: "Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --line: rgba(17, 16, 14, .34);
  --accent-copy: var(--ink);
  --orange: var(--signal);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--paper);
  color: var(--ink);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p, h1, h2, h3 { margin: 0; }
ul, ol { margin: 0; }

::selection { background: var(--signal); color: var(--paper); }

:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 4px;
}

.skip {
  position: fixed;
  z-index: 100;
  left: 14px;
  top: 14px;
  padding: 10px 14px;
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--signal);
  font: 600 12px/1 var(--mono);
  text-transform: uppercase;
  transform: translateY(-180%);
}

.skip:focus { transform: translateY(0); }

.wrap {
  width: min(calc(100% - 96px), 1200px);
  margin-inline: auto;
}

/* Homepage — the approved trace composition. */

.home main { overflow: clip; }

.home-hero {
  position: relative;
  isolation: isolate;
  height: 1000px;
  overflow: hidden;
  background: var(--paper);
  border-bottom: 3px solid var(--ink);
}

.home-hero::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: 0;
  width: 100%;
  background: url("assets/images/home-trace-wide-deep.png") 50% 50% / cover no-repeat;
}

.home-rail {
  position: absolute;
  z-index: 4;
  inset: 0 auto 0 0;
  width: 118px;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: transparent;
  border-right: 2px solid var(--ink);
}

.home-rail__brand {
  margin-top: 34px;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font: 600 29px/1 var(--sans);
  letter-spacing: .02em;
}

.home-rail__mark {
  width: 62px;
  height: 62px;
  margin-top: 28px;
  object-fit: contain;
  filter: none;
}

.home-rail__rule {
  width: 2px;
  flex: 1;
  margin: 26px 0;
  background: var(--signal);
}

.home-topbar {
  position: relative;
  z-index: 4;
  height: 92px;
  margin-left: 118px;
  padding: 0 38px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  border-bottom: 2px solid var(--ink);
}

.home-nav ul {
  display: flex;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.home-nav li { display: flex; align-items: center; }
.home-nav li + li::before { content: "·"; margin: 0 14px; color: var(--signal); }

.home-nav a {
  font: 400 13px/1 var(--mono);
  text-transform: uppercase;
  text-decoration-thickness: 2px;
  text-underline-offset: 7px;
}

.home-nav a:hover { text-decoration-line: underline; text-decoration-color: var(--signal); }
.home-nav a[aria-current="page"] { font-weight: 600; }

.home-headline {
  position: relative;
  z-index: 3;
  margin: 0 0 0 118px;
  padding: 48px 42px 0;
  font-weight: 600;
}

.home-headline span {
  display: block;
  width: max-content;
  font: 600 170px/.8 var(--sans);
  letter-spacing: -.055em;
}

.home-headline span:nth-child(2) { margin-left: 330px; color: var(--bitcoin-orange); }

.home-support {
  position: absolute;
  z-index: 4;
  left: 168px;
  right: 42px;
  bottom: 38px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  align-items: end;
  gap: 33px;
}

.home-support > p {
  padding: 17px 18px 18px;
  max-width: 820px;
  background: var(--paper);
  color: var(--ink);
  font: 500 20px/1.42 var(--body);
}

.home-actions { display: grid; gap: 8px; }

.home-actions a {
  min-height: 52px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 2px solid var(--ink);
  background: var(--paper);
  font: 400 13px/1 var(--mono);
  text-transform: uppercase;
  transition: background-color .16s ease, color .16s ease;
}

.home-actions a::after {
  content: "";
  width: 13px;
  height: 1px;
  background: var(--signal);
}

.home-actions a:hover { background: var(--ink); color: var(--paper); }

/* Every top-level page uses the same rail + horizontal menu + full-bleed field. */

.context-hero {
  position: relative;
  isolation: isolate;
  height: 1000px;
  overflow: hidden;
  background: var(--paper);
  border-bottom: 3px solid var(--ink);
}

.context-hero::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: 0;
  background: var(--context-art-wide) 50% 50% / cover no-repeat;
}

.prim-page {
  --context-art-wide: url("assets/images/trace-prim-policy-loom-v2.png");
}

.boomerang-page {
  --context-art-wide: url("assets/images/trace-boomerang-pressure-plates-v4.png");
}

.about-page {
  --context-art-wide: url("assets/images/trace-about-audit-strata-v3.png");
}

.support-page {
  --context-art-wide: url("assets/images/trace-support-liquid-stream-v10.png");
}

.context-title {
  position: relative;
  z-index: 3;
  margin-left: 118px;
  padding: 58px 42px 0;
}

.context-title h1 {
  max-width: 1160px;
}

.about-page .context-title h1 {
  font: 600 clamp(96px, 9vw, 136px)/.82 var(--sans);
  letter-spacing: -.055em;
}

.context-project-name {
  display: block;
  width: max-content;
  max-width: 100%;
  font: 600 clamp(118px, 11vw, 168px)/.76 var(--sans);
  letter-spacing: -.06em;
}

.context-project-subtitle {
  display: block;
  width: max-content;
  max-width: 920px;
  margin-top: 30px;
  font: 500 clamp(48px, 5.2vw, 76px)/.88 var(--sans);
  letter-spacing: -.045em;
}

.context-support {
  position: absolute;
  z-index: 4;
  left: 168px;
  right: 42px;
  bottom: 38px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  align-items: end;
  gap: 33px;
}

.context-support > p {
  max-width: 820px;
  padding: 17px 18px 18px;
  background: var(--ink);
  color: var(--paper);
  font: 500 20px/1.42 var(--body);
}

.context-kicker {
  display: block;
  margin-bottom: 9px;
  color: var(--paper);
  font: 600 11px/1.2 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.home-thesis {
  position: relative;
  height: 658px;
  overflow: hidden;
  padding-left: 118px;
  background: var(--paper);
  border-bottom: 3px solid var(--ink);
}

.home-thesis::before {
  content: "";
  position: absolute;
  left: 116px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--ink);
}

.home-thesis__head {
  position: relative;
  z-index: 2;
  height: 205px;
  padding: 36px 42px 0;
  border-bottom: 0;
  background: var(--ink);
  color: var(--paper);
}

.home-thesis h2 {
  position: relative;
  z-index: 2;
  max-width: 1120px;
  font: 600 75px/.88 var(--sans);
  letter-spacing: -.04em;
}

.home-projects {
  position: relative;
  z-index: 2;
  height: 390px;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.home-project {
  position: relative;
  padding: 43px 66px 43px 42px;
  display: flex;
  flex-direction: column;
  gap: 66px;
  background: var(--ink);
  color: var(--paper);
  transition: background-color .16s ease, color .16s ease;
}

.home-project--dark {
  padding-left: 66px;
  padding-right: 42px;
  background: var(--ink);
  color: var(--paper);
}

.home-project__name {
  font: 600 73px/.85 var(--sans);
  letter-spacing: -.045em;
}

.home-project__status {
  max-width: 460px;
  font: 400 16px/1.4 var(--mono);
}

.home-project:hover { background: var(--signal); color: var(--ink); }

/* Homepage argument sections. */
.home main > .sec {
  position: relative;
  isolation: isolate;
  min-height: 520px;
  padding: 112px 0;
  overflow: hidden;
  background: var(--paper);
  color: var(--ink);
  border-bottom: 3px solid var(--ink);
}

.home main > .sec:nth-of-type(4) {
  --accent-copy: var(--paper);
  background: var(--ink);
  color: var(--paper);
  --line: rgba(242, 238, 228, .34);
}

.home main > .sec:nth-of-type(6) {
  --accent-copy: var(--ink);
  background: var(--signal);
  color: var(--ink);
}

/* Shared navigation and detail-page heroes. */

.paper {
  --line: rgba(17, 16, 14, .34);
  --accent-copy: var(--ink);
  background: var(--paper);
  color: var(--ink);
}

.field {
  --line: rgba(242, 238, 228, .28);
  --accent-copy: var(--paper);
  background: var(--ink);
  color: var(--paper);
}

.detail-hero-shell {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 820px;
  background: var(--paper);
  color: var(--ink);
}

.detail-hero-shell::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: 0;
  background: var(--paper) var(--context-art) 100% 50% / auto 100% no-repeat;
}

.nav { border-bottom: 2px solid rgba(242, 238, 228, .7); }

.nav__inner {
  height: 90px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  font: 600 30px/1 var(--sans);
  letter-spacing: -.035em;
}

.nav__brand img {
  width: 25px;
  height: 43px;
  object-fit: contain;
  filter: grayscale(1) brightness(2.6);
}

.nav ul {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav li { display: flex; align-items: center; }
.nav li + li::before { content: "·"; margin: 0 13px; color: var(--signal); }

.nav nav a {
  font: 400 13px/1 var(--mono);
  text-transform: uppercase;
  text-underline-offset: 7px;
  text-decoration-thickness: 2px;
}

.nav nav a:hover { text-decoration-line: underline; text-decoration-color: var(--signal); }
.nav nav a[aria-current="page"] { font-weight: 600; }

.detail-page .hero {
  position: relative;
  min-height: 820px;
  padding: 96px 0;
  display: flex;
  align-items: center;
}

.detail-page .hero > .wrap {
  width: min(690px, calc(100% - 96px));
  margin-left: max(48px, calc((100vw - 1200px) / 2));
  margin-right: 0;
  padding: 52px 54px 56px;
  background: var(--ink);
  color: var(--paper);
  clip-path: polygon(0 0, calc(100% - 32px) 0, 100% 32px, 100% 100%, 0 100%);
}

.eyebrow {
  margin-bottom: 28px;
  color: var(--paper);
  font: 600 12px/1 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.detail-page .hero h1 {
  max-width: 650px;
  font: 600 clamp(72px, 7.8vw, 112px)/.82 var(--sans);
  letter-spacing: -.05em;
}

.hero__sub {
  max-width: 600px;
  margin-top: 34px;
  font: 500 20px/1.45 var(--body);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.btn {
  min-height: 52px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid currentColor;
  background: transparent;
  color: inherit;
  font: 400 13px/1 var(--mono);
  text-transform: uppercase;
  transition: background-color .16s ease, border-color .16s ease, color .16s ease;
}

.btn--fill,
.btn--commit {
  border-color: var(--signal);
  background: var(--signal);
  color: var(--ink);
}

.btn:hover { border-color: var(--ink); background: var(--ink); color: var(--paper); }
.field .btn:hover,
.home main > .sec:nth-of-type(4) .btn:hover { border-color: var(--paper); background: var(--paper); color: var(--ink); }
.btn--fill:hover,
.btn--commit:hover { border-color: var(--paper); background: var(--paper); color: var(--ink); }
.paper .btn--fill:hover,
.paper .btn--commit:hover { border-color: var(--ink); background: var(--ink); color: var(--paper); }

/* Dense technical sections. */

.detail-page .sec {
  position: relative;
  padding: 118px 0 128px;
  border-top: 0;
}

.field.sec { border-top: 0; }

.sec__head {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 58px;
  padding: 0 0 0 34px;
  border: 0;
}

.sec__head::before {
  content: "";
  position: absolute;
  inset: 2px auto 4px 0;
  width: 10px;
  background: var(--signal);
}

.sec__no,
.sec__num {
  padding-top: 0;
  color: var(--accent-copy);
  font: 600 12px/1.35 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.sec h2,
.t-title {
  max-width: 920px;
  font: 600 clamp(54px, 6vw, 82px)/.9 var(--sans);
  letter-spacing: -.04em;
}

.t-heading,
.card h3 {
  font: 600 31px/.95 var(--sans);
  letter-spacing: -.025em;
}

.t-body { font: 400 18px/1.58 var(--serif); }
.t-caption { font: 400 12px/1.55 var(--mono); text-transform: uppercase; }
.num { font: 400 14px/1.5 var(--mono); }
.muted { opacity: .66; }

.prose { max-width: 760px; }

.prose p,
.stat-note,
.stat__note {
  font: 400 18px/1.65 var(--serif);
}

.prose p + p { margin-top: 24px; }

.prose a,
.stat-note a,
.stat__note a,
.links a,
.colophon a {
  text-decoration-line: underline;
  text-decoration-color: var(--signal);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

code {
  color: var(--accent-copy);
  font: 400 .85em/1.4 var(--mono);
  overflow-wrap: anywhere;
}

.lede {
  max-width: 900px;
  font: 500 clamp(30px, 4vw, 52px)/1.12 var(--body);
  letter-spacing: -.035em;
}

.status {
  --accent-copy: var(--paper);
  position: relative;
  max-width: 950px;
  margin-bottom: 54px;
  padding: 36px 42px 38px;
  border-left: 18px solid var(--signal);
  background: var(--ink);
  color: var(--paper);
}

.status__label {
  display: block;
  margin-bottom: 18px;
  color: var(--accent-copy);
  font: 600 11px/1 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.status__head {
  font: 600 clamp(25px, 3.2vw, 43px)/1.02 var(--sans);
  letter-spacing: -.025em;
}

.status__note {
  max-width: 760px;
  margin-top: 22px;
  font: 400 17px/1.55 var(--serif);
}

.cut { clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%); }

.grid2,
.grid3 {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 0;
}

.grid2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card {
  --accent-copy: var(--paper);
  min-width: 0;
  padding: 38px 34px 42px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  border-top: 8px solid var(--signal);
  background: var(--ink);
  color: var(--paper);
}

.field .card { --accent-copy: var(--ink); background: var(--paper); color: var(--ink); }
.card + .card { border-left: 0; }
.card p { max-width: 38ch; }

.card--linked {
  position: relative;
  cursor: pointer;
  transition: background-color .16s ease, color .16s ease, transform .16s ease;
}

.card--linked a::after {
  content: "";
  position: absolute;
  inset: 0;
}

.card--linked a:not(.card__go) {
  text-decoration-line: underline;
  text-decoration-color: var(--signal);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.card--linked:hover,
.card--linked:focus-within {
  --accent-copy: var(--ink);
  background: var(--signal);
  color: var(--ink);
  transform: translateY(-3px);
}

.card--linked:focus-within {
  outline: 3px solid var(--signal);
  outline-offset: 4px;
}

.card--linked a:focus-visible { outline: 0; }

.card ul { padding: 0; list-style: none; }
.card li { position: relative; padding-left: 20px; font: 400 15px/1.55 var(--serif); }
.card li + li { margin-top: 8px; }
.card li::before { content: ""; position: absolute; left: 0; top: .75em; width: 10px; height: 2px; background: var(--signal); }

.card__go {
  margin-top: auto;
  padding-top: 18px;
  color: var(--accent-copy);
  font: 600 12px/1.4 var(--mono);
  text-transform: uppercase;
}

.badge {
  align-self: flex-start;
  color: var(--accent-copy);
  font: 600 11px/1.4 var(--mono);
  text-transform: uppercase;
}

.rows {
  max-width: 1030px;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  border: 0;
}

.rows > li {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 38px;
  padding: 28px 30px;
  border: 0;
  border-left: 8px solid var(--signal);
  background: rgba(17, 16, 14, .055);
}

.field .rows > li,
.home main > .sec:nth-of-type(4) .rows > li { background: rgba(242, 238, 228, .08); }

.rows__k {
  color: var(--accent-copy);
  font: 600 11px/1.4 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.rows__v > * + * { margin-top: 9px; }

.stat-note,
.stat__note {
  max-width: 760px;
  margin-top: 32px;
  opacity: .76;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
  gap: 12px;
  border: 0;
}

.stats li {
  --accent-copy: var(--paper);
  padding: 34px 30px 38px;
  border-top: 8px solid var(--signal);
  background: var(--ink);
  color: var(--paper);
}
.field .stats li { --accent-copy: var(--ink); background: var(--paper); color: var(--ink); }
.stats li + li { border-left: 0; }

.fig-n {
  display: block;
  margin-bottom: 20px;
  color: var(--accent-copy);
  font: 600 clamp(62px, 7vw, 100px)/.78 var(--sans);
  letter-spacing: -.05em;
}

.stats li > span:last-child { display: block; font: 400 16px/1.5 var(--serif); }

.steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
  gap: 12px;
  border: 0;
}

.steps li {
  min-height: 245px;
  padding: 34px 38px 42px;
  border: 0;
  border-left: 8px solid var(--signal);
  background: rgba(17, 16, 14, .055);
}

.field .steps li { background: rgba(242, 238, 228, .08); }
.steps li:nth-child(even) { padding-left: 38px; border-left: 8px solid var(--signal); }

.steps .n {
  display: block;
  margin-bottom: 28px;
  color: var(--accent-copy);
  font: 600 11px/1.4 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.steps b {
  display: block;
  margin-bottom: 14px;
  font: 600 30px/1 var(--sans);
  letter-spacing: -.02em;
}

.steps p { max-width: 50ch; font: 400 16px/1.58 var(--serif); }

.breaks {
  max-width: 1050px;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  border: 0;
}

.breaks li {
  display: grid;
  grid-template-columns: minmax(220px, 340px) minmax(0, 1fr);
  gap: 46px;
  padding: 30px 34px;
  border: 0;
  border-left: 8px solid var(--signal);
  background: rgba(242, 238, 228, .08);
}

.breaks strong { font: 600 25px/1.05 var(--sans); letter-spacing: -.015em; }
.breaks p { font: 400 16px/1.58 var(--serif); }

.callout {
  max-width: 970px;
  margin-top: 58px;
  padding: 40px 44px;
  background: var(--signal);
  color: var(--ink);
}

.callout .ask { margin-bottom: 14px; font: 600 clamp(32px, 4.2vw, 56px)/.95 var(--sans); letter-spacing: -.035em; }
.callout p:not(.ask) { font: 400 17px/1.55 var(--serif); }

.faq {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
}

.faq > div { padding: 30px 32px 34px; border: 0; border-top: 8px solid var(--signal); background: rgba(17, 16, 14, .055); }
.field .faq > div { background: rgba(242, 238, 228, .08); }
.faq dt { margin-bottom: 14px; font: 600 27px/1.05 var(--sans); }
.faq dd { margin: 0; font: 400 16px/1.6 var(--serif); opacity: .82; }

.links {
  max-width: 860px;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  border: 0;
}

.links li { padding: 25px 28px 28px; border: 0; border-left: 8px solid var(--signal); background: rgba(17, 16, 14, .055); }
.field .links li { background: rgba(242, 238, 228, .08); }
.links strong { display: block; font: 600 25px/1.08 var(--sans); }
.links .note { display: block; margin-top: 9px; color: var(--accent-copy); font: 400 12px/1.5 var(--mono); text-transform: uppercase; }

.claims {
  max-width: 950px;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  border: 0;
}

.claims li {
  position: relative;
  padding: 24px 30px 26px 42px;
  border: 0;
  background: rgba(17, 16, 14, .055);
  font: 400 19px/1.5 var(--serif);
}

.field .claims li { background: rgba(242, 238, 228, .08); }

.claims li::before { content: ""; position: absolute; left: 0; top: 35px; width: 16px; height: 3px; background: var(--signal); }
.claims--does li::before { width: 7px; height: 16px; top: 27px; }

.fig { margin: 58px 0 0; }

.fig__scroll {
  overflow-x: auto;
  padding: 24px;
  background: var(--paper);
  border: 2px solid currentColor;
}

.fig svg { display: block; width: 100%; min-width: 760px; height: auto; }
.fig figcaption { max-width: 760px; margin-top: 18px; font: 400 14px/1.55 var(--mono); opacity: .72; }

.dg-focus { fill: rgba(152, 19, 41, .14); }
.dg-box { fill: var(--paper); stroke: rgba(17, 16, 14, .48); stroke-width: 1; }
.dg-box--key { stroke: var(--signal); stroke-width: 2; }
.dg-rule { stroke: rgba(17, 16, 14, .24); stroke-width: 1; }
.dg-line { stroke: var(--ink); stroke-width: 1; fill: none; }
.dg-dash { stroke: var(--ink); stroke-width: 1; stroke-dasharray: 3 3; fill: none; }
.dg-arrow { fill: var(--ink); }
.dg-t { fill: var(--ink); font-family: var(--serif); font-size: 12px; }
.dg-lane, .dg-stage { fill: var(--ink); font-family: var(--mono); font-size: 10px; letter-spacing: .1em; }
.dg-accent { fill: var(--ink); font-family: var(--mono); font-size: 10px; font-weight: 600; letter-spacing: .1em; }

/* Footer. */

.colophon {
  padding: 62px 0 48px;
  background: var(--ink);
  color: var(--paper);
  border-top: 16px solid var(--signal);
}

.colophon__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 48px;
}

.colophon h2 {
  margin-bottom: 16px;
  color: var(--paper);
  font: 600 11px/1.4 var(--mono);
  letter-spacing: .07em;
  text-transform: uppercase;
}

.colophon ul { padding: 0; list-style: none; }
.colophon p, .colophon li { font: 400 15px/1.7 var(--serif); }

.colophon a {
  transition: background-color .16s ease, color .16s ease, text-decoration-color .16s ease;
}

.colophon a:hover,
.colophon a:focus-visible {
  background: var(--signal);
  color: var(--ink);
  text-decoration-color: transparent;
}

.colophon__base {
  margin-top: 48px;
  padding-top: 18px;
  border-top: 2px solid rgba(242, 238, 228, .3);
  font: 400 11px/1.5 var(--mono) !important;
  text-transform: uppercase;
}

/* Responsive. */

@media (max-width: 1100px) {
  .home-headline span { font-size: clamp(96px, 13vw, 132px); }
  .home-headline span:nth-child(2) { margin-left: 7vw; }
  .home-headline span:nth-child(3) { margin-left: 20vw; }
  .home-headline span:nth-child(4) { margin-left: 29vw; }
  .home-support,
  .context-support { grid-template-columns: minmax(0, 1fr) 320px; }
  .sec__head { grid-template-columns: 205px minmax(0, 1fr); }
}

@media (max-width: 720px) {
  .wrap { width: calc(100% - 36px); }

  .home-hero { height: 1100px; }
  .home-hero::before {
    inset: 0;
    width: 100%;
    opacity: 1;
    background-image: url("assets/images/home-trace-portrait-deep.png");
    background-position: 50% 50%;
    background-size: auto 100%;
  }
  .home-rail { width: 48px; }
  .home-rail__brand { font-size: 20px; }
  .home-rail__mark { width: 34px; height: 34px; }
  .home-rail__rule { margin-top: 24px; }

  .home-topbar {
    height: 92px;
    margin-left: 48px;
    padding: 22px 15px 0;
    align-items: flex-start;
  }

  .home-nav ul { flex-wrap: wrap; justify-content: flex-end; }
  .home-nav li + li::before { margin: 0 7px; }
  .home-nav a { font-size: 9px; }

  .home-headline { margin-left: 48px; padding: 56px 12px 0; }
  .home-headline span { font-size: clamp(56px, 16vw, 66px); line-height: .84; margin-left: 0 !important; }
  .home-headline span:nth-child(2) { margin-left: 28px !important; }

  .home-support {
    left: 69px;
    right: 18px;
    bottom: 35px;
    grid-template-columns: 1fr;
    gap: 19px;
  }

  .home-support > p { font-size: 19px; }

  .context-hero { height: 1100px; }
  .context-hero::before {
    inset: 0;
    width: 100%;
    background-position: 50% 50%;
    background-size: auto 100%;
  }
  .context-title { margin-left: 48px; padding: 56px 12px 0; }
  .about-page .context-title h1 {
    max-width: calc(100vw - 78px);
    font-size: clamp(51px, 14vw, 61px);
    line-height: .86;
  }
  .context-project-name {
    max-width: calc(100vw - 78px);
    font-size: clamp(58px, 17vw, 74px);
    line-height: .78;
  }
  .context-project-subtitle {
    max-width: calc(100vw - 78px);
    margin-top: 20px;
    font-size: clamp(35px, 10.5vw, 46px);
    line-height: .9;
  }
  .context-support {
    left: 69px;
    right: 18px;
    bottom: 35px;
    grid-template-columns: 1fr;
    gap: 19px;
  }
  .context-support > p { font-size: 18px; }

  .home-thesis { height: 850px; padding-left: 48px; }
  .home-thesis::before { left: 46px; width: 2px; }
  .home-thesis__head { height: 232px; padding: 34px 18px 0; }
  .home-thesis h2 { font-size: 51px; }
  .home-projects { height: 525px; grid-template-columns: 1fr; }
  .home-project { padding: 35px 20px; gap: 30px; }
  .home-project__name { font-size: 57px; }
  .home-project__status { font-size: 12px; }

  .home main > .sec { min-height: auto; padding: 76px 0 82px 48px; }

  .nav__inner { height: 114px; flex-direction: column; align-items: flex-start; justify-content: center; gap: 15px; }
  .nav__brand { font-size: 25px; }
  .nav nav { width: 100%; }
  .nav ul { width: 100%; justify-content: space-between; }
  .nav li + li::before { margin: 0 6px; }
  .nav nav a { font-size: 10px; }

  .detail-hero-shell::before {
    inset: 0;
    width: 100%;
    background-position: 50% 50%;
    background-size: auto 100%;
  }
  .detail-page .hero { min-height: 1040px; padding: 520px 0 0; display: block; }
  .detail-page .hero > .wrap {
    width: 100%;
    min-height: 520px;
    margin: 0;
    padding: 38px 18px 46px;
    clip-path: none;
  }
  .detail-page .hero h1 { font-size: clamp(55px, 15.8vw, 68px); }
  .hero__sub { max-width: 100%; font-size: 18px; }

  .detail-page .sec { padding: 76px 0 84px; }
  .sec__head { gap: 17px; margin-bottom: 42px; padding: 0 0 0 24px; }
  .sec__no, .sec__num { padding-top: 0; }
  .sec h2, .t-title { font-size: 50px; }
  .lede { font-size: 34px; }

  .status { padding: 30px 24px 32px; border-left-width: 10px; }
  .status__head { font-size: 28px; }

  .grid2, .grid3, .stats, .steps, .faq { grid-template-columns: 1fr; }
  .card { padding: 32px 24px; }
  .card + .card { border-left: 0; border-top: 8px solid var(--signal); }
  .stats li { padding: 30px 24px 34px; }
  .stats li + li { border-left: 0; border-top: 8px solid var(--signal); }
  .steps li, .steps li:nth-child(even) { min-height: 0; padding: 30px 24px 34px; border-left: 8px solid var(--signal); }
  .rows > li, .breaks li { grid-template-columns: 1fr; gap: 16px; }
  .faq { gap: 12px; }
  .fig__scroll { padding: 12px; }
  .callout { padding: 32px 24px; }

  .colophon__grid { grid-template-columns: 1fr; gap: 34px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}