/* overlay.social — blueprint document
   warm offwhite + deep teal/blue
   hairline rules, figure captions, coordinate annotations
*/

:root {
  --paper: #f1e9d6;
  --paper-2: #ebe1c5;
  --paper-3: #e3d8b7;
  --ink: #0e2b30;
  --ink-2: #2a4548;
  --mid: #6e7c7a;
  --rule: #b9ad8a;
  --rule-soft: #d6c9a6;
  --accent: #ad4a1f;
  --accent-cool: #1f5560;
  --measure: 68ch;

  --serif: "Newsreader", "Source Serif 4", Georgia, serif;
  --display: "Instrument Serif", "Newsreader", Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

/* Dusk variant — deep, paper turned to ink */
body.theme-dusk {
  --paper: #0c1c20;
  --paper-2: #112429;
  --paper-3: #173036;
  --ink: #ece2c7;
  --ink-2: #b8c2bf;
  --mid: #7e8a87;
  --rule: #344448;
  --rule-soft: #233236;
  --accent: #e08a4a;
  --accent-cool: #6cb3b8;
}

/* Sea variant — colder, brighter rule */
body.theme-sea {
  --paper: #eaeee3;
  --paper-2: #e1e7d8;
  --paper-3: #d6dec9;
  --ink: #0c2a38;
  --ink-2: #284857;
  --mid: #607672;
  --rule: #a6b39a;
  --rule-soft: #c4cdb6;
  --accent: #b04a23;
  --accent-cool: #235860;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.55;
  font-feature-settings: "ss01", "onum";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--rule); transition: border-color .15s; }
a:hover { border-bottom-color: var(--ink); }

/* ===== Page chrome ===== */

.page {
  max-width: 1320px;
  margin: 0 auto;
  padding: 28px 56px 96px;
  position: relative;
}

@media (max-width: 720px) {
  .page { padding: 20px 22px 64px; }
}

/* Corner registration marks */
.regmark {
  position: absolute;
  width: 18px;
  height: 18px;
  pointer-events: none;
}
.regmark::before, .regmark::after {
  content: ""; position: absolute; background: var(--ink);
}
.regmark::before { left: 50%; top: 0; bottom: 0; width: 1px; transform: translateX(-50%); }
.regmark::after  { top: 50%; left: 0; right: 0; height: 1px; transform: translateY(-50%); }
.regmark.tl { top: 8px; left: 56px; }
.regmark.tr { top: 8px; right: 56px; }
.regmark.bl { bottom: 96px; left: 56px; }
.regmark.br { bottom: 96px; right: 56px; }

@media (max-width: 720px) { .regmark { display: none; } }

/* ===== Top bar ===== */

.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 16px;
  margin-bottom: 80px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.topbar .brand { color: var(--ink); }
.topbar nav { display: flex; gap: 28px; }
.topbar nav a { border-bottom: none; color: var(--ink-2); }
.topbar nav a:hover { color: var(--ink); }
.topbar .status { display: flex; gap: 14px; align-items: center; }
.topbar .status .dot {
  display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}

/* ===== Typography ===== */

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid);
  margin: 0 0 24px;
}

.kicker .num {
  color: var(--accent);
  margin-right: 10px;
}

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0;
}

h1.hero {
  font-size: clamp(64px, 12vw, 168px);
  line-height: 0.92;
  letter-spacing: -0.035em;
  font-weight: 400;
}
h1.hero em {
  font-style: italic;
  color: var(--ink-2);
}

h2.section {
  font-size: clamp(42px, 6vw, 80px);
  line-height: 1.0;
  letter-spacing: -0.022em;
  max-width: 18ch;
  margin-bottom: 28px;
}

h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 21px;
  letter-spacing: -0.005em;
  line-height: 1.3;
  margin-bottom: 10px;
}

h4 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--mid);
  font-weight: 400;
}

p { margin: 0 0 1em; max-width: var(--measure); }
p.lede {
  font-family: var(--display);
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.32;
  color: var(--ink);
  letter-spacing: -0.005em;
  max-width: 26ch;
}

.body-col p { color: var(--ink-2); }
.body-col p.lede { color: var(--ink); }

em.callout {
  font-style: italic;
  color: var(--accent);
  font-family: var(--display);
}

code, .mono {
  font-family: var(--mono);
  font-size: 0.86em;
  color: var(--ink-2);
  letter-spacing: 0;
}

sup.ref {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.05em;
  padding: 0 1px;
  vertical-align: super;
}

/* ===== Section frame ===== */

section.scroll {
  position: relative;
  padding-top: 96px;
  padding-bottom: 96px;
  border-top: 1px solid var(--rule);
}

section.scroll:first-of-type { border-top: none; padding-top: 0; }

.section-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mid);
  padding-top: 6px;
}

.section-grid {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 56px;
  align-items: start;
}
@media (max-width: 880px) {
  .section-grid { grid-template-columns: 1fr; gap: 12px; }
  .section-num { position: static; margin-bottom: 18px; }
}

/* ===== Hero ===== */

.hero-block {
  padding-top: 32px;
  padding-bottom: 32px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
}

.hero-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: end;
  padding-top: 48px;
}
@media (max-width: 760px) {
  .hero-meta { grid-template-columns: 1fr; gap: 24px; }
}

.hero-meta .lede { margin: 0; }

.hero-meta .meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mid);
  line-height: 1.9;
}
.hero-meta .meta .label { color: var(--ink-2); }
.hero-meta .meta .row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 14px;
  border-bottom: 1px dashed var(--rule);
  padding: 7px 0;
}
.hero-meta .meta .row:last-child { border-bottom: none; }

.hero-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 36px;
}
.hero-links a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 12px 18px;
  border: 1px solid var(--ink);
  border-radius: 0;
  color: var(--ink);
  background: transparent;
  transition: background .15s, color .15s;
}
.hero-links a:hover { background: var(--ink); color: var(--paper); }
.hero-links a.primary { background: var(--ink); color: var(--paper); }
.hero-links a.primary:hover { background: var(--accent); border-color: var(--accent); }

/* ===== Figures ===== */

figure {
  margin: 0;
  position: relative;
}

figure svg { display: block; width: 100%; height: auto; }

figcaption {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mid);
  margin-top: 18px;
  padding-top: 10px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  gap: 24px;
}
figcaption .figno { color: var(--accent); }

/* ===== Property grid (§01) ===== */

.props {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
  margin-top: 48px;
}
.props .prop {
  padding: 36px 32px 40px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  position: relative;
  background: var(--paper);
}
.props .prop .num {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--accent);
  position: absolute;
  top: 16px;
  right: 18px;
}
.props .prop .mini-fig {
  margin-bottom: 22px;
  height: 60px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.props .prop .mini-fig svg {
  display: block;
  width: auto;
  height: 50px;
  max-width: 100%;
}
.props .prop p { font-size: 15px; color: var(--ink-2); margin: 0; max-width: 38ch; }

@media (max-width: 760px) {
  .props { grid-template-columns: 1fr; }
}

/* ===== Channel cards (§02) ===== */

.channels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 56px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.channels .ch {
  padding: 32px 28px 40px;
  border-right: 1px solid var(--rule);
  position: relative;
}
.channels .ch:last-child { border-right: none; }

.channels .ch .ch-fig {
  height: 200px;
  margin: 12px 0 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.channels .ch h3 { margin-bottom: 6px; }
.channels .ch .ch-kind {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
  margin-bottom: 18px;
}
.channels .ch p { font-size: 15px; color: var(--ink-2); max-width: 36ch; }
.channels .ch .examples {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--mid);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--rule);
}
.channels .ch a.read {
  display: inline-block;
  margin-top: 24px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
}
.channels .ch a.read:hover { border-bottom-color: var(--ink); color: var(--accent); }

@media (max-width: 880px) {
  .channels { grid-template-columns: 1fr; }
  .channels .ch { border-right: none; border-bottom: 1px solid var(--rule); }
  .channels .ch:last-child { border-bottom: none; }
}

/* ===== Overlay features (§03) ===== */

.overlay-feats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 56px;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.overlay-feats .feat {
  padding: 28px 28px 32px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.overlay-feats .feat .feat-fig {
  height: 56px;
  margin-bottom: 18px;
  overflow: hidden;
}
.overlay-feats .feat .feat-fig svg {
  display: block;
  width: auto;
  height: 100%;
  max-width: 100%;
}
.overlay-feats .feat .feat-num {
  position: absolute;
  top: 14px;
  right: 16px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.06em;
}
.overlay-feats .feat h3 { font-size: 18px; margin-bottom: 6px; }
.overlay-feats .feat p { font-size: 14px; color: var(--ink-2); max-width: 36ch; margin: 0; }
@media (max-width: 880px) {
  .overlay-feats { grid-template-columns: 1fr; }
}

/* ===== Comparison matrix (§04) ===== */

.matrix-wrap {
  margin-top: 48px;
  overflow-x: auto;
}
table.matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
table.matrix th,
table.matrix td {
  text-align: left;
  padding: 18px 14px;
  border-bottom: 1px solid var(--rule);
  vertical-align: middle;
}
table.matrix thead th {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mid);
  font-weight: 400;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 14px;
}
table.matrix td.name {
  font-family: var(--display);
  font-size: 22px;
  font-style: italic;
  color: var(--ink);
  width: 25%;
}
table.matrix td.name .glyph {
  display: inline-block;
  width: 26px;
  height: 26px;
  margin-right: 14px;
  vertical-align: -7px;
}
table.matrix td.val {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}
table.matrix tr.ours td {
  background: var(--paper-2);
  border-bottom-color: var(--ink);
}
table.matrix tr.ours td.name { color: var(--accent); }
table.matrix tr.ours td.val { color: var(--ink); font-weight: 500; }
table.matrix tr.ours td:first-child {
  position: relative;
}
table.matrix tr.ours td:first-child::before {
  content: "►";
  position: absolute;
  left: -2px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 11px;
}

.matrix-key {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--mid);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ===== Implementations (§05) ===== */

.impls {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 56px;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.impls .impl {
  padding: 28px 24px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  min-height: 280px;
  position: relative;
}
.impls .impl .glyph {
  height: 80px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.impls .impl .glyph svg {
  display: block;
  width: auto;
  height: 100%;
  max-width: 100%;
}
.impls .impl h3 {
  font-family: var(--display);
  font-style: italic;
  font-size: 28px;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}
.impls .impl p {
  font-size: 14px;
  color: var(--ink-2);
  flex-grow: 1;
}
.impls .impl a.open {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--ink);
  color: var(--ink);
  align-self: flex-start;
  margin-top: 16px;
}
.impls .impl a.open:hover { color: var(--accent); border-bottom-color: var(--accent); }
.impls .impl .status-tag {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  align-self: flex-start;
  margin-top: 16px;
}
@media (max-width: 1000px) {
  .impls { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .impls { grid-template-columns: 1fr; }
}

/* ===== Status snapshot (§06) ===== */

.status-list {
  margin-top: 48px;
  border-top: 1px solid var(--ink);
}
.status-list .row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 220px;
  gap: 32px;
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
  align-items: center;
}
.status-list .row .name {
  font-family: var(--display);
  font-style: italic;
  font-size: 22px;
  color: var(--ink);
}
.status-list .row .desc {
  font-size: 14px;
  color: var(--ink-2);
}
.status-list .row .bar {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mid);
}
.status-list .row .bar .track {
  flex: 1;
  height: 8px;
  border: 1px solid var(--rule);
  background: var(--paper);
  position: relative;
}
.status-list .row .bar .fill {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg, var(--ink), var(--ink) 2px,
    transparent 2px, transparent 5px
  );
  width: var(--pct, 50%);
}
@media (max-width: 760px) {
  .status-list .row { grid-template-columns: 1fr; gap: 6px; }
}

/* ===== Acks ===== */

.acks {
  margin-top: 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}
.acks ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
  color: var(--ink-2);
}
.acks li {
  padding: 12px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.acks li .who {
  font-family: var(--display);
  font-style: italic;
  font-size: 17px;
  color: var(--ink);
  display: block;
  margin-bottom: 2px;
}
@media (max-width: 760px) {
  .acks { grid-template-columns: 1fr; gap: 24px; }
}

/* ===== Footer / title block ===== */

.titleblock {
  margin-top: 96px;
  border: 1px solid var(--ink);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.titleblock .cell {
  padding: 12px 16px;
  border-right: 1px solid var(--ink);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.titleblock .cell:last-child { border-right: none; }
.titleblock .cell .k { color: var(--mid); font-size: 9px; }
.titleblock .cell .v { color: var(--ink); font-size: 12px; }
.titleblock .cell.title { background: var(--paper-2); }
.titleblock .cell.title .v {
  font-family: var(--display);
  font-style: italic;
  font-size: 22px;
  letter-spacing: -0.01em;
  text-transform: none;
}
@media (max-width: 760px) {
  .titleblock { grid-template-columns: 1fr 1fr; }
  .titleblock .cell { border-bottom: 1px solid var(--ink); }
}

/* ===== Utility ===== */

.rule { height: 1px; background: var(--rule); margin: 32px 0; }
.rule.thick { background: var(--ink); height: 1px; }
.spacer-lg { height: 96px; }
.spacer-md { height: 48px; }

.body-col {
  max-width: 56ch;
}

/* Tweaks-panel theming (so it harmonizes) */
[id^="tp-"] {
  font-family: var(--serif) !important;
}

/* ===== Topbar additions ===== */
.topbar { flex-wrap: wrap; row-gap: 8px; }
.topbar nav { gap: 22px; flex-wrap: nowrap; }
.topbar .status { gap: 14px; white-space: nowrap; flex-wrap: nowrap; }
.topbar .status > span:not(.sep):not(.dot) { white-space: nowrap; }
@media (max-width: 1100px) {
  .topbar nav { gap: 16px; font-size: 12px; }
  .topbar nav a.hide-narrow { display: none; }
}
@media (max-width: 820px) {
  .topbar nav { gap: 12px; }
  .topbar .status .sep,
  .topbar .status > span:last-child { display: none; }
}
.topbar .theme-toggle {
  background: none;
  border: 1px solid var(--rule);
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 14px;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}
.topbar .theme-toggle:hover { color: var(--ink); border-color: var(--ink); }
.topbar .rss { color: var(--ink-2); border: none; font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; }
.topbar .rss:hover { color: var(--accent); }
.topbar .sep { color: var(--rule); }
.topbar .brand.no-deco { border-bottom: none; }
.no-deco { border-bottom: none !important; }

/* ===== Code artifact (§02) ===== */
.code-artifact {
  border: 1px solid var(--rule);
  background: var(--paper);
  margin: 32px 0;
}
.code-artifact-head {
  display: flex;
  gap: 14px;
  justify-content: space-between;
  align-items: baseline;
  padding: 12px 18px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mid);
}
.code-artifact-head .figno { color: var(--accent); }
.code-artifact-head .kind { color: var(--ink-2); }
.code-artifact-body { padding: 0; }
.code-artifact pre {
  margin: 0;
  padding: 22px 18px;
  background: var(--paper-2);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink);
  overflow-x: auto;
  white-space: pre;
}
.code-artifact .ln { color: var(--mid); margin-right: 14px; user-select: none; }
.code-artifact .hi { color: var(--accent); }
.code-artifact .ann {
  color: var(--mid);
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0;
  /* No left border — inside <pre white-space:pre>, a per-span border
     renders as a floating pipe rather than a margin rule. Keep the
     annotation as a trailing italic note; the em-dash in content
     already does the visual handoff. */
}
.code-artifact figcaption {
  padding: 12px 18px;
  border-top: 1px solid var(--rule);
  margin-top: 0;
  border-bottom: none;
}

pre.block {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 18px 22px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.6;
  overflow-x: auto;
  margin: 22px 0;
}
pre.block code { font-size: inherit; color: var(--ink); }

/* ===== Live federation readout (§03) ===== */
.live-readout {
  border: 1px solid var(--ink);
  background: var(--paper);
  margin: 56px 0 24px;
  font-family: var(--mono);
}
.live-readout .lr-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--ink);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.live-readout .lr-head .lr-title { color: var(--ink); font-weight: 500; }
.live-readout .lr-head .pulse {
  display: inline-flex; align-items: center; gap: 8px;
}
.live-readout .lr-head .status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in oklab, var(--accent) 30%, transparent);
  animation: lr-pulse 2.4s ease-in-out infinite;
}
.live-readout[data-state="degraded"] .status-dot {
  background: var(--mid);
  animation: none;
}
.live-readout[data-state="degraded"] .lr-head .pulse-label::before {
  content: "degraded";
}
.live-readout[data-state="live"] .lr-head .pulse-label::before {
  content: "live";
}
@keyframes lr-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.live-readout .lr-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.live-readout .lr-cell {
  padding: 18px 18px 22px;
  border-right: 1px solid var(--rule);
}
.live-readout .lr-cell:last-child { border-right: none; }
.live-readout .lr-cell .lr-topic {
  font-family: var(--display);
  font-style: italic;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 10px;
  font-style: italic;
}
.live-readout .lr-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 12px;
  font-size: 11px;
  padding: 5px 0;
  border-bottom: 1px dashed var(--rule);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mid);
}
.live-readout .lr-row:last-child { border-bottom: none; }
.live-readout .lr-row .lr-v {
  color: var(--ink);
  font-size: 12px;
  letter-spacing: 0;
  text-transform: none;
  word-break: break-all;
}
.live-readout .lr-foot {
  padding: 10px 16px;
  border-top: 1px solid var(--rule);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mid);
  display: flex;
  justify-content: space-between;
}
.live-readout .lr-foot a { color: var(--ink-2); border-bottom: 1px solid var(--rule); }
@media (max-width: 760px) {
  .live-readout .lr-grid { grid-template-columns: 1fr; }
  .live-readout .lr-cell { border-right: none; border-bottom: 1px solid var(--rule); }
  .live-readout .lr-cell:last-child { border-bottom: none; }
}

/* ===== Matrix citation sub-rows + variant B ===== */
table.matrix td.val { position: relative; }
table.matrix td.val .cite {
  display: block;
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.04em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 500;
}

.matrix-variant {
  margin-top: 72px;
}
.matrix-variant .variant-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 8px;
}
.matrix-variant h3 {
  font-family: var(--display);
  font-style: italic;
  font-size: 28px;
  margin-bottom: 18px;
}

table.tradeoff {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
table.tradeoff thead th {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mid);
  font-weight: 400;
  border-bottom: 1px solid var(--ink);
  padding: 12px 14px;
  text-align: left;
}
table.tradeoff td {
  padding: 18px 14px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
table.tradeoff td.name {
  font-family: var(--display);
  font-style: italic;
  font-size: 20px;
  color: var(--ink);
  width: 22%;
}
table.tradeoff td.optim, table.tradeoff td.gives {
  font-size: 14px;
  color: var(--ink-2);
}
table.tradeoff td.gives { font-style: italic; color: var(--mid); }

/* ===== Cited works (§07 split) ===== */
.cited {
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--rule);
  padding: 24px 0 28px;
  margin-bottom: 48px;
}
.cited .cited-kicker {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 14px;
}
.cited ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}
.cited li {
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink-2);
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 18px;
}
.cited li .tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  padding-top: 4px;
}
.cited li .body em { color: var(--ink); font-style: italic; }
.cited li .body code { font-size: 13px; color: var(--ink-2); }

/* ===== Builder CTA (§08) ===== */
.builder {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 56px;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.builder .cta {
  padding: 32px 26px 36px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  min-height: 240px;
}
.builder .cta .num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}
.builder .cta h3 { font-size: 22px; margin-bottom: 10px; }
.builder .cta p { font-size: 14px; color: var(--ink-2); flex-grow: 1; }
.builder .cta a.go {
  align-self: flex-start;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
}
.builder .cta a.go:hover { color: var(--accent); border-bottom-color: var(--accent); }
@media (max-width: 880px) { .builder { grid-template-columns: 1fr; } }

.first-call {
  margin-top: 48px;
}
.first-call .fc-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 12px;
}

/* ===== Spec template ===== */

.spec-layout { padding-top: 28px; }

.spec-header {
  padding: 48px 0 64px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 56px;
}
.spec-header .spec-title {
  font-family: var(--display);
  font-size: clamp(48px, 7vw, 96px);
  letter-spacing: -0.028em;
  line-height: 0.96;
  margin-bottom: 28px;
  font-weight: 400;
}
.spec-header .lede { margin-bottom: 36px; max-width: 56ch; }
.spec-header .spec-meta {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 22px;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-top: 1px solid var(--rule);
  padding-top: 18px;
}
.spec-header .spec-meta .k { display: block; color: var(--mid); font-size: 9px; margin-bottom: 4px; }
.spec-header .spec-meta .v { color: var(--ink); font-size: 12px; letter-spacing: 0.02em; text-transform: none; }
@media (max-width: 760px) { .spec-header .spec-meta { grid-template-columns: 1fr 1fr; } }

.spec-body {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 72px;
  align-items: start;
}
@media (max-width: 960px) {
  .spec-body { grid-template-columns: 1fr; gap: 32px; }
  .spec-toc { position: static !important; }
}

.spec-toc {
  position: sticky;
  top: 32px;
  font-size: 13px;
  border-left: 1px solid var(--rule);
  padding-left: 18px;
}
.spec-toc .toc-kicker {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid);
  margin: 0 0 14px;
}
.spec-toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}
.spec-toc ol ol { margin-top: 8px; padding-left: 16px; gap: 6px; }
.spec-toc a {
  color: var(--ink-2);
  border-bottom: none;
  font-family: var(--serif);
}
.spec-toc a:hover { color: var(--ink); }

.spec-content { max-width: 68ch; }
.spec-content h2 {
  font-family: var(--display);
  font-size: 32px;
  letter-spacing: -0.015em;
  margin: 48px 0 14px;
  font-weight: 400;
}
.spec-content h2:first-child { margin-top: 0; }
.spec-content h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 18px;
  margin: 28px 0 8px;
}
.spec-content p { font-size: 16px; color: var(--ink-2); margin-bottom: 1em; max-width: 64ch; }
.spec-content blockquote {
  margin: 24px 0;
  padding: 14px 22px;
  border-left: 2px solid var(--accent);
  background: var(--paper-2);
  font-size: 15px;
  color: var(--ink-2);
}
.spec-content blockquote em { font-family: var(--display); font-style: italic; color: var(--ink); font-size: 17px; }
.spec-content sup.fn a { color: var(--accent); border-bottom: none; font-family: var(--mono); font-size: 9px; padding: 0 1px; }
.spec-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 18px 0 28px;
}
.spec-content table th, .spec-content table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule);
  text-align: left;
}
.spec-content table thead th {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mid);
  font-weight: 400;
  border-bottom: 1px solid var(--ink);
}
.spec-content table td code { font-size: 12.5px; }

.spec-content .refs { margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--rule); }
.cite-list, .fn-list {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  display: grid;
  gap: 10px;
  font-size: 14px;
  color: var(--ink-2);
}
.cite-list li, .fn-list li {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 16px;
}
.cite-list .cite-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--accent);
  text-transform: uppercase;
  padding-top: 3px;
}
.fn-list { counter-reset: fn; }
.fn-list li {
  grid-template-columns: 28px 1fr;
  counter-increment: fn;
}
.fn-list li::before {
  content: counter(fn);
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.04em;
  padding-top: 3px;
}

.rev-table { font-family: var(--serif); }
.rev-table td:first-child {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  width: 60px;
}
.rev-table td:nth-child(2) {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-2);
  width: 110px;
}
.rev-table td:last-child {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--mid);
  width: 80px;
}

.prev-next {
  margin-top: 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--rule);
}
.prev-next a {
  padding: 22px 24px;
  border-bottom: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.prev-next a.next { border-left: 1px solid var(--rule); text-align: right; align-items: flex-end; }
.prev-next .dir {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--mid);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.prev-next .ttl {
  font-family: var(--display);
  font-style: italic;
  font-size: 22px;
  color: var(--ink);
}
.prev-next a:hover .ttl { color: var(--accent); }