/* base */

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

body {
  margin: 0;
  background: oklch(0.945 0.008 255);
  background-image:
    linear-gradient(oklch(0.9 0.012 258 / 0.55) 1px, transparent 1px),
    linear-gradient(90deg, oklch(0.9 0.012 258 / 0.55) 1px, transparent 1px);
  background-size: 88px 88px;
  color: oklch(0.2 0.035 265);
  font-family: Archivo, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: oklch(0.5 0.2 285 / 0.18);
}

* { box-sizing: border-box; }

h1, h2, h3, p, ul, ol, li { margin: 0; }

a { color: oklch(0.42 0.17 285); }
a:hover { color: oklch(0.34 0.16 288); }

:focus-visible {
  outline: 2px solid oklch(0.5 0.2 285);
  outline-offset: 2px;
}

code {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.86em;
  background: oklch(0.91 0.012 258);
  border-radius: 2px;
  padding: 0.1em 0.34em;
  overflow-wrap: anywhere;
}

header, main, footer, nav {
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

@keyframes rvIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

.rv { animation: rvIn 460ms ease both; }
body[data-noreveal] .rv { animation: none; }

/* shell */

.page {
  min-height: 100vh;
  min-height: 100svh;
  padding-bottom: 100px;
  background-color: oklch(0.945 0.008 255);
  background-image:
    linear-gradient(oklch(0.9 0.012 258 / 0.55) 1px, transparent 1px),
    linear-gradient(90deg, oklch(0.9 0.012 258 / 0.55) 1px, transparent 1px);
  background-size: 88px 88px;
}

.layout {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 clamp(18px, 3.5vw, 36px);
  display: flex;
  flex-wrap: wrap-reverse;
  gap: 44px;
  justify-content: center;
}

.content {
  flex: 1 1 560px;
  min-width: 0;
  max-width: 76ch;
}

/* masthead */

.masthead {
  background: oklch(0.958 0.007 258);
  border-bottom: 3px solid oklch(0.5 0.2 285);
}

.masthead-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(26px, 4vw, 44px) clamp(18px, 3.5vw, 36px) 0;
}

.masthead-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  justify-content: space-between;
  font: 500 11px/1 'JetBrains Mono', monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: oklch(0.48 0.02 265);
}

.masthead-repo {
  color: oklch(0.45 0.19 285);
  white-space: nowrap;
}

.masthead-title {
  margin-top: 18px;
  font: 700 clamp(30px, 6vw, 58px)/1.02 Archivo, sans-serif;
  letter-spacing: -0.035em;
  max-width: 20ch;
}

.factgrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 22px 30px;
  margin-top: 34px;
  padding-bottom: 26px;
}

.fact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 16px;
  border-left: 1px solid oklch(0.86 0.012 258);
}

.fact-label {
  font: 500 10px/1 'JetBrains Mono', monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: oklch(0.55 0.02 265);
}

.fact-value {
  font: 600 15.5px/1.3 Archivo, sans-serif;
  letter-spacing: -0.01em;
}

.fact-link {
  color: oklch(0.42 0.17 285);
  text-decoration: none;
  border-bottom: 2px solid oklch(0.8 0.06 285);
}

.link {
  color: oklch(0.42 0.17 285);
  text-decoration: none;
}

/* contents rail */

.toc {
  flex: 0 1 240px;
  position: sticky;
  top: 24px;
  margin-top: 48px;
  align-self: flex-end;
}

.toc-title {
  font: 500 10px/1 'JetBrains Mono', monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: oklch(0.55 0.02 265);
  padding-bottom: 10px;
  border-bottom: 1px solid oklch(0.84 0.012 258);
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.toc-link {
  position: relative;
  display: flex;
  gap: 9px;
  padding: 8px 0;
  border-bottom: 1px solid oklch(0.89 0.01 258);
  text-decoration: none;
  color: oklch(0.28 0.025 265);
  font: 400 13px/1.35 Archivo, sans-serif;
  transition: color 140ms ease, background 140ms ease;
}

.toc-link-lead { font-weight: 500; }
.toc-link-last { border-bottom: none; }

.toc-link::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: transparent;
}

.toc-link:hover { color: oklch(0.42 0.17 285); }

.toc-link[data-active] {
  color: oklch(0.32 0.15 285);
  font-weight: 600;
}

.toc-link[data-active]::before { background: oklch(0.5 0.2 285); }
.toc-link[data-active] span { color: oklch(0.45 0.19 285); }

.toc-outbound {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid oklch(0.84 0.012 258);
  font: 500 11px/1.3 'JetBrains Mono', monospace;
  letter-spacing: 0.04em;
  color: oklch(0.42 0.17 285);
  text-decoration: none;
}

/* sections */

.section {
  margin-top: 52px;
  scroll-margin-top: 28px;
}

.section-open  { margin-top: 48px; }
.section-close { margin-top: 46px; }

.section-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-eyebrow {
  font: 500 14px/1.4 'JetBrains Mono', monospace;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: oklch(0.45 0.02 265);
}

.rule {
  flex: 1;
  height: 1px;
  background: oklch(0.84 0.012 258);
}

.heading {
  font: 600 26px/1.1 Archivo, sans-serif;
  letter-spacing: -0.03em;
}

.subheading {
  font: 600 21px/1.2 Archivo, sans-serif;
  letter-spacing: -0.025em;
}

/* prose */

.para {
  margin-top: 18px;
  font: 400 17px/1.62 Archivo, sans-serif;
  text-wrap: pretty;
}

.para-t14 { margin-top: 14px; }
.para-t16 { margin-top: 16px; }

.para-sm {
  margin-top: 12px;
  font: 400 16.5px/1.6 Archivo, sans-serif;
  text-wrap: pretty;
}

.para-note {
  margin-top: 16px;
  font: 400 16px/1.65 Archivo, sans-serif;
  color: oklch(0.3 0.025 265);
  max-width: 70ch;
  text-wrap: pretty;
}

.para-note-t13 { margin-top: 13px; }

.unbold { font-weight: normal; }

/* pull-request chips */

.pr {
  display: inline-flex;
  align-items: stretch;
  font: 500 12.5px/1 'JetBrains Mono', monospace;
  text-decoration: none;
  color: oklch(0.2 0.035 265);
  white-space: nowrap;
  border: 1px solid oklch(0.82 0.014 258);
  background: oklch(0.985 0.004 255);
}

.pr-sm { font-size: 12px; }

.pr-strong { border-color: oklch(0.2 0.035 265); }

.pr-accent {
  color: oklch(0.32 0.14 285);
  border-color: oklch(0.5 0.2 285);
  background: oklch(0.96 0.03 285);
}

.pr-tag {
  padding: 4px 5px;
  background: oklch(0.2 0.035 265);
  color: oklch(0.95 0.004 255);
  font-weight: 600;
}

.pr-tag-accent {
  background: oklch(0.5 0.2 285);
  color: oklch(0.98 0.004 285);
}

.pr-num { padding: 4px 7px; }

.pr-sm .pr-tag { padding: 3px 5px; }
.pr-sm .pr-num { padding: 3px 6px; }

/* ledger */

.ledger-list {
  margin: 0;
  padding: 4px 14px 14px;
  list-style: none;
  display: flex;
  flex-direction: column;
}

.ledger-list-boxed {
  margin-top: 12px;
  padding: 4px 14px 6px;
  border: 1px solid oklch(0.84 0.012 258);
  border-left: 3px solid oklch(0.2 0.035 265);
  background: oklch(0.985 0.004 255);
}

.ledger-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-top: 1px solid oklch(0.89 0.01 258);
}

.ledger-item-first { border-top: none; }

.ledger-title {
  font: 400 14.5px/1.4 Archivo, sans-serif;
  flex: 1;
  min-width: 200px;
}

.ledger-date {
  font: 400 11.5px/1.3 'JetBrains Mono', monospace;
  color: oklch(0.55 0.02 265);
  white-space: nowrap;
}

/* status squares + legend */

.sq {
  width: 22px;
  height: 22px;
  background: oklch(0.2 0.035 265);
}

.sq-open { background: oklch(0.5 0.2 285); }

.sq-dropped {
  background: none;
  border: 1px dashed oklch(0.6 0.02 265);
}

.key-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 15px;
  height: 15px;
  background: oklch(0.2 0.035 265);
  color: oklch(0.95 0.004 255);
  font-weight: 600;
  font-size: 9.5px;
}

.key-open {
  background: oklch(0.5 0.2 285);
  color: oklch(0.98 0.004 285);
}

.key-dropped {
  background: none;
  border: 1px dashed oklch(0.6 0.02 265);
  color: oklch(0.55 0.02 265);
}

/* deliverable cards */

.card {
  margin-top: 18px;
  border: 1px solid oklch(0.84 0.012 258);
  background: oklch(0.985 0.004 255);
}

.card-t22 { margin-top: 22px; }

.card-head {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  justify-content: space-between;
  padding: 9px 16px;
  border-bottom: 1px solid oklch(0.84 0.012 258);
  background: oklch(0.96 0.006 258);
  font: 500 10.5px/1.3 'JetBrains Mono', monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: oklch(0.48 0.02 265);
}

.card-status { color: oklch(0.45 0.19 285); }

.card-body { padding: 20px 18px; }

.card-meta {
  font: 500 11px/1.35 'JetBrains Mono', monospace;
  color: oklch(0.6 0.02 265);
}

.card-meta-accent { color: oklch(0.45 0.19 285); }

/* disclosure */

.disclosure {
  margin-top: 18px;
  border: 1px solid oklch(0.84 0.012 258);
  border-left: 3px solid oklch(0.2 0.035 265);
  background: oklch(0.985 0.004 255);
}

.disclosure-summary {
  list-style: none;
  cursor: pointer;
  padding: 12px 14px;
  font: 500 15px/1.5 'JetBrains Mono', monospace;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.disclosure-summary:hover { color: oklch(0.42 0.17 285); }

.disclosure-hint {
  margin-left: auto;
  font: 400 10.5px/1 'JetBrains Mono', monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: oklch(0.55 0.02 265);
}

/* ledger panel */

.panel {
  margin-top: 30px;
  border: 1px solid oklch(0.2 0.035 265);
  background: oklch(0.985 0.004 255);
}

.panel-head {
  padding: 11px 16px;
  background: oklch(0.2 0.035 265);
  color: oklch(0.95 0.004 255);
  font: 500 10.5px/1 'JetBrains Mono', monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.panel-body { padding: 18px 16px; }

.sq-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.key-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 16px;
  font: 400 12px/1 'JetBrains Mono', monospace;
  color: oklch(0.42 0.02 265);
}

.panel-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 22px;
  padding: 16px;
  border-top: 1px solid oklch(0.84 0.012 258);
}

.stat {
  padding-left: 16px;
  border-left: 1px solid oklch(0.86 0.012 258);
}

.stat-value {
  font: 600 24px/1 'JetBrains Mono', monospace;
  letter-spacing: -0.03em;
}

.stat-value-accent { color: oklch(0.42 0.17 285); }

.stat-value-sub {
  color: oklch(0.6 0.02 265);
  font-weight: 400;
}

.stat-label {
  margin-top: 8px;
  font: 400 13px/1.4 Archivo, sans-serif;
  color: oklch(0.45 0.02 265);
}

.panel-foot {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid oklch(0.84 0.012 258);
}

.panel-label {
  font: 500 10.5px/1 'JetBrains Mono', monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: oklch(0.42 0.02 265);
}

/* badges */

.badge {
  font: 600 11px/1 'JetBrains Mono', monospace;
  letter-spacing: 0.1em;
  padding: 5px 7px;
  background: oklch(0.2 0.035 265);
  color: oklch(0.95 0.004 255);
}

.badge-accent {
  background: oklch(0.5 0.2 285);
  color: oklch(0.98 0.004 285);
}

.badge-quiet {
  font-weight: 500;
  background: none;
  border: 1px solid oklch(0.8 0.014 258);
  color: oklch(0.45 0.02 265);
}

/* footer */

.page-footer {
  margin-top: 56px;
  padding-top: 18px;
  border-top: 1px solid oklch(0.84 0.012 258);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  font: 400 11.5px/1.5 'JetBrains Mono', monospace;
  color: oklch(0.5 0.02 265);
}

/* responsive */

@media (max-width: 900px) {
  .masthead-inner,
  .content,
  .layout { padding-left: 20px !important; padding-right: 20px !important; }
}

@media (max-width: 760px) {
  body { padding-bottom: env(safe-area-inset-bottom); }
  .page { background-size: 54px 54px !important; padding-bottom: 48px; }

  .masthead-inner { padding-top: 26px !important; }

  .masthead-meta {
    flex-direction: column;
    gap: 4px !important;
    font-size: 10px !important;
    letter-spacing: 0.1em !important;
  }

  .masthead-title {
    margin-top: 14px !important;
    font-size: clamp(28px, 8.6vw, 40px) !important;
    line-height: 1.05 !important;
    letter-spacing: -0.028em !important;
    max-width: 18ch !important;
  }

  .factgrid {
    margin-top: 24px !important;
    gap: 16px 20px !important;
    padding-bottom: 20px !important;
    grid-template-columns: repeat(2, 1fr) !important;
  }

  .fact { padding-left: 12px !important; gap: 6px !important; }
  .fact-value { font-size: 14.5px !important; }

  .content { max-width: 100% !important; }
  .content > section:first-child { margin-top: 34px !important; }
  .section { margin-top: 38px !important; }
  .section-head { gap: 10px !important; }

  .content h2 { font-size: 20px !important; letter-spacing: -0.02em !important; }
  .content h3 { font-size: 18.5px !important; }
  .content p {
    font-size: 16px !important;
    line-height: 1.56 !important;
    overflow-wrap: break-word;
  }
  .content section p + p { margin-top: 12px !important; }
  .content p, .content h2, .content h3 { max-width: 100% !important; }
  .card p { line-height: 1.52 !important; }

  .card { margin-top: 14px !important; }
  .card-body { padding: 16px 14px !important; }
  .card-head {
    font-size: 9.5px !important;
    letter-spacing: 0.08em !important;
    padding: 8px 14px !important;
  }

  .pr { font-size: 12px !important; vertical-align: -2px; }
  .pr-tag, .pr-num { padding-top: 6px !important; padding-bottom: 6px !important; }

  .sq { width: 15px !important; height: 15px !important; }

  .toc { display: none !important; }
  .page-footer { margin-top: 44px !important; font-size: 11px !important; }
}

@media (max-width: 480px) {
  .page { background-size: 46px 46px !important; }
  .factgrid { gap: 14px 12px !important; }
  .card-head { flex-direction: column; gap: 3px !important; }
  .card-body { padding: 15px 13px !important; }
  .content p { font-size: 15.5px !important; }
  .page-footer { flex-direction: column; gap: 6px !important; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rv { animation: none; }
}

@media print {
  body, .page { background: #fff; background-image: none; }
  .rv { animation: none; }
  .toc { display: none; }
}