:root {
  --paper: #f1ecdf;
  --paper-soft: #f8f4e9;
  --paper-deep: #e4dccb;
  --ink: #20221e;
  --ink-soft: #5c6057;
  --line: rgba(32, 34, 30, 0.2);
  --line-strong: rgba(32, 34, 30, 0.48);
  --rust: #b84d33;
  --rust-soft: #f1d4c9;
  --teal: #1d6259;
  --teal-soft: #d3e3dd;
  --gold: #a6772f;
  --gold-soft: #eadbbd;
  --maxw: 1320px;
  --serif: "Iowan Old Style", "Baskerville", "Palatino Linotype", "Songti SC",
    "STSong", "Noto Serif CJK SC", serif;
  --sans: "Avenir Next", "Century Gothic", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "Cascadia Mono", "Liberation Mono", Menlo, monospace;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 5%, rgba(184, 77, 51, 0.1), transparent 28rem),
    radial-gradient(circle at 88% 18%, rgba(29, 98, 89, 0.1), transparent 32rem),
    linear-gradient(rgba(32, 34, 30, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(32, 34, 30, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: auto, auto, 38px 38px, 38px 38px, auto;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, transparent 0 49.8%, rgba(32, 34, 30, 0.05) 50%, transparent 50.2%);
  content: "";
  pointer-events: none;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

img {
  display: block;
  max-width: 100%;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

code {
  padding: 0.1em 0.38em;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.42);
  font-family: var(--mono);
  font-size: 0.86em;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: var(--paper);
}

.site-header {
  display: flex;
  width: min(calc(100% - 48px), var(--maxw));
  min-height: 86px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line-strong);
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.11em;
  text-decoration: none;
}

.wordmark-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--serif);
  font-size: 15px;
  font-style: italic;
  letter-spacing: 0;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-header nav a {
  text-decoration: none;
}

.site-header nav a:hover {
  color: var(--rust);
}

main,
footer {
  width: min(calc(100% - 48px), var(--maxw));
  margin: 0 auto;
}

.hero {
  padding: 70px 0 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(120px, 0.55fr) minmax(0, 2.5fr) minmax(250px, 0.9fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}

.eyebrow,
.project-role,
.project-kicker,
.ticket-label,
.boundary-label,
.project-number {
  margin: 0;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.13em;
  line-height: 1.5;
  text-transform: uppercase;
}

.eyebrow {
  color: var(--rust);
}

.hero-aside {
  padding-top: 12px;
}

.issue {
  margin: 42px 0 0;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  line-height: 1.8;
}

.hero-main h1 {
  max-width: 900px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.2rem, 5.2vw, 4.75rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.hero-main h1 .accent {
  color: var(--rust);
  font-style: italic;
  white-space: nowrap;
}

.hero-main h1 .underline {
  white-space: nowrap;
  text-decoration: underline;
  text-decoration-color: var(--teal);
  text-decoration-thickness: 5px;
  text-underline-offset: 0.11em;
}

.hero-lede {
  max-width: 720px;
  margin: 34px 0 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1.12rem, 1.65vw, 1.45rem);
  line-height: 1.7;
}

.hero-lede strong {
  color: var(--ink);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  margin-top: 30px;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  min-height: 44px;
  padding: 0.65rem 1rem;
  align-items: center;
  justify-content: center;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-ink {
  background: var(--ink);
  color: var(--paper);
}

.button-ink:hover {
  background: var(--rust);
  border-color: var(--rust);
}

.button-rust {
  background: var(--rust);
  color: #fffaf0;
}

.button-teal {
  background: var(--teal);
  color: #fffaf0;
}

.button-gold {
  background: var(--gold);
  color: #fffaf0;
}

.text-link {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-decoration: none;
}

.text-link span {
  display: inline-block;
  margin-left: 0.3rem;
  transition: transform 160ms ease;
}

.text-link:hover span {
  transform: translateY(3px);
}

.hero-ticket {
  position: relative;
  margin-top: 8px;
  padding: 18px 18px 16px;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.46), transparent 60%),
    var(--paper-soft);
  box-shadow: 8px 8px 0 rgba(32, 34, 30, 0.08);
  transform: rotate(1.5deg);
}

.hero-ticket::before,
.hero-ticket::after {
  position: absolute;
  top: 50%;
  width: 14px;
  height: 14px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--paper);
  content: "";
}

.hero-ticket::before {
  left: -8px;
}

.hero-ticket::after {
  right: -8px;
}

.ticket-label {
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-strong);
  color: var(--rust);
}

.hero-ticket dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0;
  padding: 12px 0;
  gap: 12px 18px;
}

.hero-ticket dt {
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-ticket dd {
  margin: 2px 0 0;
  font-family: var(--serif);
  font-size: 30px;
  line-height: 1;
}

.hero-ticket dd.ticket-warn {
  color: var(--rust);
}

.ticket-note {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line-strong);
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.65;
}

.read-strip {
  display: grid;
  margin-top: 64px;
  padding: 18px 0 20px;
  grid-template-columns: 170px 1fr;
  gap: 32px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.strip-title {
  margin: 0;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.read-strip ol {
  display: grid;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  list-style: none;
}

.read-strip li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 14px;
  line-height: 1.5;
}

.read-strip li span {
  color: var(--rust);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
}

.section {
  padding-top: 104px;
}

.section-heading {
  display: grid;
  margin-bottom: 42px;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  align-items: end;
  gap: 52px;
}

.section-heading .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: -24px;
}

.section-heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.4rem, 4.3vw, 4.5rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.section-heading-wide h2 {
  grid-column: 1 / -1;
  max-width: 1120px;
}

.section-note {
  max-width: 520px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.project {
  display: grid;
  margin-top: 54px;
  grid-template-columns: 155px minmax(0, 1fr);
  border-top: 2px solid var(--ink);
}

.project-rail {
  display: flex;
  padding: 20px 18px 20px 0;
  flex-direction: column;
  border-right: 1px solid var(--line);
}

.project-number {
  color: var(--rust);
  font-size: 12px;
}

.project-role {
  margin-top: 12px;
  color: var(--ink-soft);
  font-size: 9px;
}

.project-mark {
  margin-top: auto;
  font-family: var(--serif);
  font-size: 44px;
  line-height: 1;
}

.project-llm .project-number,
.project-llm .project-mark {
  color: var(--teal);
}

.project-study .project-number,
.project-study .project-mark {
  color: var(--gold);
}

.project-body {
  min-width: 0;
  padding: 20px 0 0 34px;
}

.project-intro {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 24px;
}

.project-kicker {
  color: var(--ink-soft);
}

.project-intro h3 {
  margin: 7px 0 0;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 4vw, 4.1rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1;
}

.status {
  flex: none;
  margin-top: 4px;
  padding: 5px 9px;
  border: 1px solid var(--rust);
  border-radius: 999px;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.status-teal {
  border-color: var(--teal);
  color: var(--teal);
}

.status-gold {
  border-color: var(--gold);
  color: var(--gold);
}

.project-claim {
  max-width: 850px;
  margin: 24px 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.45vw, 1.3rem);
  line-height: 1.7;
}

.project-claim strong {
  color: var(--ink);
  font-weight: 600;
}

.preview {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: #fff;
}

.preview::after {
  position: absolute;
  inset: 0;
  border: 0 solid transparent;
  background: linear-gradient(180deg, transparent 64%, rgba(21, 22, 20, 0.48));
  content: "";
  opacity: 0.7;
  transition: opacity 180ms ease;
}

.preview img {
  width: 100%;
  aspect-ratio: 16 / 8.6;
  object-fit: cover;
  object-position: top center;
  transition: transform 500ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.preview:hover img {
  transform: scale(1.018);
}

.preview:hover::after {
  opacity: 1;
}

.preview-label {
  position: absolute;
  right: 16px;
  bottom: 14px;
  z-index: 1;
  color: #fff;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.project-facts {
  display: grid;
  margin: 0;
  padding: 22px 0;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.project-facts div {
  min-width: 0;
  padding-right: 22px;
  border-right: 1px solid var(--line);
}

.project-facts div:last-child {
  padding-right: 0;
  border-right: 0;
}

.project-facts dt {
  margin-bottom: 7px;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.project-llm .project-facts dt {
  color: var(--teal);
}

.project-study .project-facts dt {
  color: var(--gold);
}

.project-facts dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.65;
}

.evidence-callout {
  margin-top: 20px;
  padding: 15px 18px;
  border-left: 3px solid var(--rust);
  background: rgba(184, 77, 51, 0.075);
}

.project-llm .evidence-callout {
  border-color: var(--teal);
  background: rgba(29, 98, 89, 0.075);
}

.project-study .evidence-callout {
  border-color: var(--gold);
  background: rgba(166, 119, 47, 0.09);
}

.evidence-callout-warn {
  box-shadow: inset 0 0 0 1px rgba(166, 119, 47, 0.2);
}

.evidence-callout p {
  display: grid;
  margin: 0;
  grid-template-columns: 74px 1fr;
  gap: 12px;
  font-size: 12px;
  line-height: 1.65;
}

.evidence-callout p + p {
  margin-top: 6px;
}

.evidence-callout span {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.project-links {
  display: flex;
  margin-top: 22px;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.project-links a:not(.button) {
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.project-links a:not(.button):hover {
  color: var(--rust);
  border-color: var(--rust);
}

.inline-runbook {
  margin-top: 18px;
  padding: 12px 14px;
  border: 1px dashed var(--line-strong);
  background: rgba(255, 255, 255, 0.25);
}

.inline-runbook p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.inline-runbook strong {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 10px;
}

.supplement {
  display: grid;
  margin-top: 84px;
  padding: 26px 0;
  grid-template-columns: 60px minmax(220px, 0.8fr) minmax(0, 1.5fr) minmax(240px, 0.8fr);
  gap: 28px;
  align-items: start;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.supplement-index {
  font-family: var(--serif);
  font-size: 40px;
  line-height: 1;
}

.supplement h2 {
  margin: 6px 0 0;
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.supplement > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.supplement-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 7px;
  font-family: var(--mono);
  font-size: 9px;
  line-height: 1.55;
}

.supplement-links a {
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.supplement-links span {
  margin-top: 4px;
  color: var(--ink-soft);
}

.ledger {
  border-top: 2px solid var(--ink);
}

.ledger-row {
  display: grid;
  min-height: 64px;
  padding: 14px 0;
  grid-template-columns: 1fr 1.55fr 1.1fr 1.6fr;
  gap: 26px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}

.ledger-row > * {
  min-width: 0;
}

.ledger-head {
  min-height: auto;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ledger-row strong {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
}

.ledger-row .pass {
  color: var(--teal);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
}

.method-grid {
  display: grid;
  margin-top: 34px;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.method-card {
  padding: 24px;
  background: var(--paper-soft);
}

.method-card span {
  color: var(--rust);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.07em;
}

.method-card h3 {
  margin: 24px 0 8px;
  font-family: var(--serif);
  font-size: 25px;
  font-weight: 500;
  letter-spacing: -0.03em;
}

.method-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.boundary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--ink);
  border: 1px solid var(--ink);
}

.boundary {
  min-height: 310px;
  padding: 28px;
  background: var(--paper-soft);
}

.boundary-label {
  color: var(--ink-soft);
}

.boundary h3 {
  margin: 56px 0 18px;
  font-family: var(--serif);
  font-size: clamp(2rem, 3.2vw, 3.35rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.07;
}

.boundary p:last-child {
  max-width: 520px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.boundary-red {
  background: var(--rust-soft);
}

.boundary-teal {
  background: var(--teal-soft);
}

.boundary-ink {
  background: var(--ink);
  color: var(--paper);
}

.boundary-ink .boundary-label,
.boundary-ink p:last-child {
  color: rgba(241, 236, 223, 0.7);
}

.boundary-gold {
  background: var(--gold-soft);
}

.qa-list {
  border-top: 2px solid var(--ink);
}

.qa-list details {
  border-bottom: 1px solid var(--line);
}

.qa-list summary {
  position: relative;
  padding: 21px 46px 21px 0;
  cursor: pointer;
  font-family: var(--serif);
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  font-weight: 500;
  list-style: none;
}

.qa-list summary::-webkit-details-marker {
  display: none;
}

.qa-list summary::after {
  position: absolute;
  right: 6px;
  top: 50%;
  color: var(--rust);
  content: "+";
  font-family: var(--mono);
  font-size: 20px;
  transform: translateY(-50%);
}

.qa-list details[open] summary::after {
  content: "−";
}

.qa-list details p {
  max-width: 900px;
  margin: -2px 0 24px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.closing {
  margin-top: 104px;
  padding: 56px 0 62px;
  border-top: 2px solid var(--ink);
}

.closing h2 {
  max-width: 1000px;
  margin: 20px 0 0;
  font-family: var(--serif);
  font-size: clamp(2.4rem, 5vw, 5rem);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 1.04;
}

.closing-links {
  display: flex;
  margin-top: 32px;
  align-items: center;
  gap: 26px;
  flex-wrap: wrap;
}

footer {
  display: grid;
  padding: 22px 0 30px;
  grid-template-columns: 1fr auto auto;
  gap: 24px;
  align-items: center;
  border-top: 1px solid var(--line-strong);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.03em;
}

footer p {
  margin: 0;
}

footer strong,
footer a {
  color: var(--ink);
}

.reveal {
  animation: rise-in 650ms cubic-bezier(0.2, 0.7, 0.2, 1) both;
}

.delay-1 {
  animation-delay: 70ms;
}

.delay-2 {
  animation-delay: 140ms;
}

.delay-3 {
  animation-delay: 210ms;
}

.delay-4 {
  animation-delay: 290ms;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.button:focus-visible,
.text-link:focus-visible,
.site-header a:focus-visible,
.qa-list summary:focus-visible,
.preview:focus-visible,
footer a:focus-visible {
  outline: 2px solid var(--rust);
  outline-offset: 4px;
}

@media (max-width: 1120px) {
  .hero-grid {
    grid-template-columns: 90px minmax(0, 1fr) 240px;
    gap: 24px;
  }

  .hero-main h1 {
    font-size: clamp(2.9rem, 4.8vw, 4rem);
  }

  .project {
    grid-template-columns: 120px minmax(0, 1fr);
  }

  .project-facts {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-facts div:nth-child(2) {
    padding-right: 0;
    border-right: 0;
  }

  .supplement {
    grid-template-columns: 50px minmax(200px, 0.7fr) minmax(0, 1.4fr);
  }

  .supplement-links {
    grid-column: 2 / -1;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 16px;
  }

  .supplement-links span {
    flex-basis: 100%;
  }
}

@media (max-width: 860px) {
  .site-header {
    width: min(calc(100% - 32px), var(--maxw));
  }

  .site-header nav {
    gap: 16px;
  }

  .site-header nav a:nth-child(2),
  .site-header nav a:nth-child(3) {
    display: none;
  }

  main,
  footer {
    width: min(calc(100% - 32px), var(--maxw));
  }

  .hero {
    padding-top: 48px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-aside {
    display: flex;
    padding: 0;
    align-items: center;
    justify-content: space-between;
  }

  .issue {
    margin: 0;
    text-align: right;
  }

  .hero-ticket {
    width: min(100%, 460px);
    margin-top: 0;
    transform: none;
  }

  .read-strip {
    margin-top: 46px;
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .read-strip ol {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .section {
    padding-top: 82px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .section-heading .eyebrow {
    margin-bottom: -4px;
  }

  .project {
    grid-template-columns: 1fr;
  }

  .project-rail {
    padding: 14px 0;
    flex-direction: row;
    align-items: center;
    gap: 20px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .project-role {
    margin-top: 0;
  }

  .project-mark {
    margin: 0 0 0 auto;
    font-size: 28px;
  }

  .project-body {
    padding: 22px 0 0;
  }

  .preview img {
    aspect-ratio: 16 / 9.6;
  }

  .supplement {
    grid-template-columns: 42px 1fr;
  }

  .supplement > p {
    grid-column: 2;
  }

  .supplement-links {
    grid-column: 2;
  }

  .ledger {
    overflow-x: auto;
  }

  .ledger-row {
    min-width: 820px;
  }

  .boundary-grid {
    grid-template-columns: 1fr;
  }

  .boundary {
    min-height: 250px;
  }

  .boundary h3 {
    margin-top: 42px;
  }

  footer {
    grid-template-columns: 1fr auto;
    gap: 10px 18px;
  }

  footer p:nth-child(2) {
    grid-column: 1 / -1;
    grid-row: 2;
  }
}

@media (max-width: 600px) {
  body {
    background-size: auto, auto, 28px 28px, 28px 28px, auto;
    font-size: 15px;
  }

  .site-header {
    min-height: 74px;
  }

  .wordmark span:last-child {
    display: none;
  }

  .site-header nav {
    gap: 14px;
    font-size: 9px;
  }

  .hero {
    padding-top: 38px;
  }

  .hero-main h1 {
    font-size: clamp(2.35rem, 10vw, 3.2rem);
    line-height: 1.04;
  }

  .hero-main h1 .underline {
    text-decoration-thickness: 3px;
  }

  .hero-lede {
    margin-top: 24px;
    font-size: 1.03rem;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  .hero-ticket {
    padding: 16px;
  }

  .project-intro {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .project-intro h3 {
    font-size: 2.55rem;
  }

  .project-claim {
    margin: 20px 0;
    font-size: 1rem;
  }

  .preview img {
    aspect-ratio: 4 / 3.1;
  }

  .project-facts {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .project-facts div,
  .project-facts div:nth-child(2) {
    padding: 12px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .project-facts div:last-child {
    border-bottom: 0;
  }

  .evidence-callout {
    padding: 14px;
  }

  .evidence-callout p {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .project-links {
    gap: 14px 18px;
  }

  .supplement {
    margin-top: 64px;
    grid-template-columns: 1fr;
  }

  .supplement-index {
    display: none;
  }

  .supplement > p,
  .supplement-links {
    grid-column: 1;
  }

  .supplement h2 {
    font-size: 24px;
  }

  .ledger-row {
    min-width: 0;
    grid-template-columns: 1fr;
    gap: 7px;
    padding: 18px 14px;
    background: rgba(255, 255, 255, 0.15);
  }

  .ledger-head {
    display: none;
  }

  .ledger-row strong {
    margin-bottom: 3px;
    font-size: 22px;
  }

  .ledger-row > span {
    display: grid;
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 10px;
  }

  .ledger-row > span::before {
    color: var(--ink-soft);
    content: attr(data-label);
    font-family: var(--mono);
    font-size: 8px;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
  }

  .method-grid {
    grid-template-columns: 1fr;
  }

  .boundary {
    min-height: 0;
    padding: 22px;
  }

  .boundary h3 {
    margin-top: 36px;
    font-size: 2.2rem;
  }

  .closing {
    margin-top: 82px;
    padding: 44px 0 50px;
  }

  .closing h2 {
    font-size: 2.55rem;
  }

  footer {
    grid-template-columns: 1fr;
  }

  footer p:nth-child(2) {
    grid-column: 1;
    grid-row: auto;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  body {
    background: #fff;
  }

  body::before,
  .site-header nav,
  .hero-actions,
  .project-links,
  .inline-runbook,
  .closing-links,
  footer a {
    display: none;
  }

  .site-header,
  main,
  footer {
    width: 100%;
  }

  .project,
  .supplement,
  .closing {
    break-inside: avoid;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}