/* Stark Quantum.
 *
 * A small serious journal. Warm paper, ink that is not pure black, one rust
 * accent, hairline rules. Type does the work; there is no ornament.
 *
 * Fonts are self-hosted under /static/fonts/ and nothing is fetched from a
 * third party, which is what the privacy notice promises.
 *
 *   1. Fonts
 *   2. Tokens
 *   3. Base and layout
 *   4. Masthead
 *   5. Home
 *   6. Prose
 *   7. Lists
 *   8. Reality Board
 *   9. Glossary and sources
 *  10. Footer
 *  11. Search
 *  12. Responsive
 */

/* 1. Fonts ---------------------------------------------------------------- */

/* Source Serif 4 and Inter, both SIL OFL 1.1. Licences sit next to the files. */

@font-face {
  font-family: "Source Serif 4 Variable";
  src: url("/static/fonts/source-serif-4-latin-wght-normal.woff2") format("woff2");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Source Serif 4 Variable";
  src: url("/static/fonts/source-serif-4-latin-wght-italic.woff2") format("woff2");
  font-weight: 200 900;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter Variable";
  src: url("/static/fonts/inter-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* 2. Tokens --------------------------------------------------------------- */

:root {
  /* Warm paper, warm ink. Nothing here is pure white or pure black. */
  --paper: #f6f2e8;
  --paper-2: #fdfbf5;
  --footer-bg: #f1ecdf;
  --ink: #1f1c17;
  --ink-2: #514a40;
  --ink-3: #8a8173;
  --rule: #ddd5c6;
  --rule-2: #ebe5d9;
  --accent: #8c3a22;
  --accent-2: #a94a2e;
  --accent-wash: #f1e5dd;
  /* One second colour, ochre, used only to flag a board cell as "early". */
  --flag: #856618;
  --flag-wash: #f0e8d3;
  --shadow: 0 1px 2px rgba(31, 28, 23, 0.05), 0 8px 24px rgba(31, 28, 23, 0.07);

  --serif: "Source Serif 4 Variable", "Source Serif 4", Charter,
    "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans: "Inter Variable", Inter, ui-sans-serif, -apple-system, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Consolas, monospace;

  --wrap-wide: 64rem;
  --wrap-text: 43rem;

  --step--2: 0.75rem;
  --step--1: 0.8125rem;
  --step-0: 1.0625rem;
  --step-1: 1.1875rem;
  --step-2: 1.4375rem;
  --step-3: clamp(1.5rem, 1.2rem + 1.5vw, 1.9rem);
  --step-4: clamp(1.6rem, 1.15rem + 2.3vw, 2.35rem);
}

@media (min-width: 40rem) {
  :root { --step-0: 1.1875rem; }
}

/* Dark mode is still paper: warm, low contrast, never blue-black. */
html[data-theme="dark"] {
  --paper: #191613;
  --paper-2: #221f1a;
  --footer-bg: #151210;
  --ink: #ece5d8;
  --ink-2: #b4ab9b;
  --ink-3: #857c6d;
  --rule: #35302a;
  --rule-2: #282420;
  --accent: #dd8b68;
  --accent-2: #eda184;
  --accent-wash: #2d211b;
  --flag: #cba75f;
  --flag-wash: #2a2419;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.4);
}

@media (prefers-color-scheme: dark) {
  html[data-theme="auto"] {
    --paper: #191613;
    --paper-2: #221f1a;
    --footer-bg: #151210;
    --ink: #ece5d8;
    --ink-2: #b4ab9b;
    --ink-3: #857c6d;
    --rule: #35302a;
    --rule-2: #282420;
    --accent: #dd8b68;
    --accent-2: #eda184;
    --accent-wash: #2d211b;
    --flag: #cba75f;
    --flag-wash: #2a2419;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.4);
  }
}

/* 3. Base and layout ------------------------------------------------------ */

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

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

body {
  margin: 0;
  background-color: var(--paper);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='t'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23t)' opacity='0.032'/%3E%3C/svg%3E");
  background-repeat: repeat;
  color: var(--ink);
  font-family: var(--serif);
  font-size: var(--step-0);
  line-height: 1.65;
  font-synthesis-weight: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--wrap-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Reading column. Declared after .wrap so that an element carrying both
   classes reads at the measure rather than the full width. */
.prose {
  max-width: var(--wrap-text);
  margin: 0 auto;
}

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--rule);
  text-underline-offset: 0.18em;
  transition: color 0.12s ease, text-decoration-color 0.12s ease;
}

a:hover { color: var(--accent); text-decoration-color: var(--accent); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 60;
  background: var(--paper-2);
  color: var(--ink);
  padding: 0.7rem 1.1rem;
  font-family: var(--sans);
  font-size: var(--step--1);
  border: 1px solid var(--rule);
}
.skip:focus { left: 0.5rem; top: 0.5rem; }

.eyebrow {
  font-family: var(--sans);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0;
}

.muted { color: var(--ink-3); }

/* 4. Masthead ------------------------------------------------------------- */

.masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
  position: relative;
  z-index: 20;
}

.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 1.05rem;
  padding-bottom: 1.05rem;
}

.wordmark {
  text-decoration: none;
  flex: none;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.wordmark:hover { color: var(--ink); }

/* Kept smaller than the wordmark: the name is the identity, the mark sits
   beside it. */
.wordmark-mark {
  height: 26px;
  width: auto;
  display: block;
  flex: none;
}

.wordmark-text { display: block; }

.wordmark-name {
  display: block;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.012em;
  line-height: 1.1;
}
.wordmark:hover .wordmark-name { color: var(--accent); }

.wordmark-note {
  display: block;
  font-family: var(--sans);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: 0.28rem;
}

.masthead-right {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 450;
}

.nav a {
  color: var(--ink-2);
  text-decoration: none;
  padding: 0.35rem 0;
  position: relative;
  white-space: nowrap;
}
.nav a:hover { color: var(--accent); }

.nav a[aria-current="page"] { color: var(--ink); font-weight: 550; }
.nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--accent);
}

/* Tools read as instruments, not as page buttons. */
.tools { display: flex; align-items: center; gap: 0.5rem; }

.tool {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font: inherit;
  font-family: var(--sans);
  font-size: 0.8125rem;
  color: var(--ink-2);
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.32rem 0.6rem;
  cursor: pointer;
  line-height: 1;
}
.tool:hover { color: var(--accent); border-color: var(--accent); }
.tool svg { width: 14px; height: 14px; flex: none; }

.tool-icon { padding: 0.32rem 0.42rem; }

.tool kbd {
  font-family: var(--sans);
  font-size: 0.6875rem;
  color: var(--ink-3);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.05rem 0.28rem;
  background: var(--paper);
}

.menu-toggle {
  display: none;
  font-family: var(--sans);
  font-size: 0.8125rem;
  color: var(--ink-2);
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
}
.menu-toggle:hover { color: var(--accent); border-color: var(--accent); }

/* 5. Home ----------------------------------------------------------------- */

.hero {
  border-bottom: 1px solid var(--rule);
  padding: clamp(3rem, 7vw, 5rem) 0 clamp(2.5rem, 5vw, 3.5rem);
}

.hero-inner { max-width: 40rem; }

.hero-mark {
  height: 64px;
  width: auto;
  display: block;
  margin: 0 0 1.9rem;
}

.hero-tagline {
  font-family: var(--sans);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.35rem;
}

.hero h1 {
  font-size: var(--step-4);
  line-height: 1.2;
  font-weight: 400;
  letter-spacing: -0.018em;
  margin: 0 0 1.35rem;
  text-wrap: balance;
}

.hero-body {
  font-size: var(--step-1);
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0 0 2rem;
  max-width: 34rem;
}

.claims {
  list-style: none;
  margin: 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2.25rem;
  font-family: var(--sans);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--ink-2);
}

.claims li { position: relative; padding-left: 0.95rem; }
.claims li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.58em;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.band { padding: clamp(2.75rem, 5vw, 4rem) 1.5rem; }
.band + .band { border-top: 1px solid var(--rule-2); }

.band-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.9rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--rule);
}

.band-head h2 {
  font-family: var(--sans);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0;
}

.more {
  font-family: var(--sans);
  font-size: var(--step--1);
  color: var(--ink-3);
  text-decoration: none;
  white-space: nowrap;
}
.more:hover { color: var(--accent); }

.band-note {
  color: var(--ink-2);
  max-width: 36rem;
  margin: -0.75rem 0 1.75rem;
}

/* The secondary half of the home page: two quieter columns. */
.band-split { display: grid; gap: clamp(2.5rem, 5vw, 3.5rem); }

@media (min-width: 52rem) {
  .band-split { grid-template-columns: 1fr 1fr; }
}

.quiet-day {
  color: var(--ink-2);
  font-style: italic;
  border-left: 2px solid var(--rule);
  padding-left: 1rem;
  margin: 0;
}

/* 6. Prose ---------------------------------------------------------------- */

.prose { padding-top: clamp(2.5rem, 5vw, 3.75rem); padding-bottom: 3.5rem; }

.prose h1 {
  font-size: var(--step-3);
  line-height: 1.22;
  font-weight: 400;
  letter-spacing: -0.016em;
  margin: 0 0 1rem;
  text-wrap: balance;
}

.prose h2 {
  font-size: var(--step-2);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.008em;
  margin: 2.75rem 0 0.85rem;
}

.prose h3 {
  font-size: var(--step-1);
  font-weight: 600;
  margin: 2rem 0 0.6rem;
}

.prose p { margin: 0 0 1.35rem; }
.prose ul, .prose ol { margin: 0 0 1.5rem; padding-left: 1.35rem; }
.prose li { margin-bottom: 0.55rem; }
.prose li::marker { color: var(--ink-3); }

.prose strong { font-weight: 600; }

.prose blockquote {
  margin: 1.9rem 0;
  padding-left: 1.35rem;
  border-left: 2px solid var(--accent);
  color: var(--ink-2);
  font-style: italic;
}

.prose code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--rule-2);
  padding: 0.12em 0.34em;
  border-radius: 3px;
}

.prose pre {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  font-size: 0.9rem;
}
.prose pre code { background: none; padding: 0; }

.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 3rem 0; }

.prose table { border-collapse: collapse; width: 100%; font-size: 0.94rem; }
.prose th, .prose td {
  text-align: left;
  padding: 0.6rem 0.85rem 0.6rem 0;
  border-bottom: 1px solid var(--rule-2);
  vertical-align: top;
}
.prose th { font-family: var(--sans); font-size: var(--step--1); font-weight: 600; }

.prose .address {
  margin: 0 0 1.5rem;
  padding-left: 1.1rem;
  border-left: 2px solid var(--rule);
  line-height: 1.6;
  color: var(--ink);
}

.standfirst {
  font-size: var(--step-1);
  line-height: 1.55;
  color: var(--ink-2);
  margin: 0 0 1.5rem;
}

.crumbs {
  font-family: var(--sans);
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-3);
  margin: 0 0 1.1rem;
}
.crumbs a { color: var(--ink-3); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }

.dateline {
  font-family: var(--sans);
  font-size: var(--step--1);
  color: var(--ink-3);
  margin: 0 0 2.5rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--rule);
}

/* The Claim / Evidence panel: quiet, not a call-out box. */
.footer-box {
  margin: 3.5rem 0 0;
  padding: 1.6rem 1.75rem 1.75rem;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-top: 2px solid var(--accent);
}

.footer-box h2 {
  margin: 0 0 1.35rem;
  font-family: var(--sans);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.footer-box dl { margin: 0; display: grid; gap: 1.15rem; }

.footer-box dt {
  font-family: var(--sans);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.footer-box dd { margin: 0; font-size: 1rem; line-height: 1.55; }

.essay-sources { margin-top: 3rem; }
.essay-sources h2,
.brief-block h2 {
  font-family: var(--sans);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 0.85rem;
}
.essay-sources ul { list-style: none; padding: 0; font-size: 0.96rem; }
.essay-sources li {
  padding-bottom: 0.65rem;
  margin-bottom: 0.65rem;
  border-bottom: 1px solid var(--rule-2);
}
.essay-sources li:last-child { border-bottom: 0; }

.living-note, .frozen-note {
  margin-top: 3rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule-2);
  font-size: 0.92rem;
  color: var(--ink-3);
}

.brief-block { margin-top: 2.5rem; }
.brief-block ul { margin-bottom: 0; }

.example-banner {
  background: var(--flag-wash);
  border-left: 3px solid var(--flag);
  padding: 0.9rem 1.2rem;
  font-size: 0.96rem;
  margin: 0 0 1.75rem;
}

.corrections {
  background: var(--accent-wash);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.2rem 0.6rem;
  margin: 0 0 1.75rem;
}
.corrections h2 {
  margin: 0 0 0.5rem;
  font-family: var(--sans);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.corrections p { margin: 0 0 0.5rem; font-size: 0.96rem; }

/* 7. Lists ---------------------------------------------------------------- */

.entry-list { list-style: none; margin: 0; padding: 0; }

.entry-list li {
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule-2);
}
.entry-list li:first-child { border-top: 0; padding-top: 0; }

.entry-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.9rem;
  font-family: var(--sans);
  font-size: var(--step--2);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 0.5rem;
}

.entry-title {
  display: inline-block;
  font-size: var(--step-2);
  line-height: 1.3;
  font-weight: 500;
  letter-spacing: -0.01em;
  text-decoration: none;
  margin-bottom: 0.4rem;
}
.entry-title:hover { color: var(--accent); }

.entry-list p {
  margin: 0;
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.55;
  max-width: 40rem;
}

/* The quieter secondary lists on the home page. */
.entry-list.compact li { padding: 1rem 0; }
.entry-list.compact .entry-title { font-size: var(--step-1); margin-bottom: 0.2rem; }
.entry-list.compact p { font-size: 0.94rem; }

/* Start here: numbered, because the order is the recommendation. */
.start-list { list-style: none; margin: 0; padding: 0; counter-reset: start; }

.start-list li {
  counter-increment: start;
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: 0 0.75rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule-2);
}
.start-list li:first-child { border-top: 0; padding-top: 0; }

.start-list li::before {
  content: counter(start, decimal-leading-zero);
  font-family: var(--sans);
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--accent);
  padding-top: 0.35rem;
}

.pill {
  font-family: var(--sans);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  border-radius: 2px;
  padding: 0.1rem 0.36rem;
  line-height: 1.4;
}
.pill-example { color: var(--flag); }

.category { margin-bottom: 3.25rem; }
.category:last-child { margin-bottom: 0; }
.category > h2 {
  font-family: var(--sans);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.25rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--rule);
}

/* 8. Reality Board -------------------------------------------------------- */

.board { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.25rem; }

@media (min-width: 54rem) {
  .board { grid-template-columns: 1fr 1fr; }
}

.board-cell {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--ink-3);
  padding: 1.5rem 1.6rem 1.6rem;
  display: flex;
  flex-direction: column;
  counter-increment: cell;
}

/* Colour flags a cell as moving. Nothing on this board is ever green. */
.board-cell.status-early,
.board-cell.status-partial { border-top-color: var(--flag); }

.board-cell-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.status-tag {
  font-family: var(--sans);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.status-early .status-tag,
.status-partial .status-tag { color: var(--flag); }

.board-reviewed {
  font-family: var(--sans);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.board-cell h2 {
  font-size: var(--step-2);
  line-height: 1.3;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 0.9rem;
}

.board-body { font-size: 1rem; line-height: 1.6; color: var(--ink-2); }
.board-body p { margin: 0 0 0.9rem; }
.board-body p:last-child { margin-bottom: 0; }

.board-change {
  margin-top: auto;
  padding-top: 1.15rem;
  border-top: 1px solid var(--rule-2);
}
.board-change h3 {
  font-family: var(--sans);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 1.15rem 0 0.6rem;
}
.board-change ul { margin: 0; padding-left: 1.15rem; font-size: 0.94rem; color: var(--ink-2); }
.board-change li { margin-bottom: 0.45rem; }
.board-change li:last-child { margin-bottom: 0; }

/* The compact board on the home page. */
.board-mini {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--rule-2);
  border: 1px solid var(--rule-2);
}

@media (min-width: 46rem) {
  .board-mini { grid-template-columns: 1fr 1fr; }
}

.board-mini li {
  background: var(--paper);
  padding: 1.15rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  border-left: 3px solid var(--ink-3);
}
.board-mini li.status-early,
.board-mini li.status-partial { border-left-color: var(--flag); }

.board-q { font-size: 1rem; line-height: 1.45; }

/* 9. Glossary and sources ------------------------------------------------- */

.glossary-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding-bottom: 1.75rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--rule);
}
.glossary-jump a {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-2);
  text-decoration: none;
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.22rem 0.55rem;
  background: var(--paper-2);
}
.glossary-jump a:hover { color: var(--accent); border-color: var(--accent); }

.glossary { margin: 0; }
.glossary-entry {
  scroll-margin-top: 1.5rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule-2);
}
.glossary-entry:first-child { border-top: 0; padding-top: 0; }

.glossary dt {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.005em;
  margin-bottom: 0.5rem;
}
.glossary .aka {
  font-weight: 400;
  color: var(--ink-3);
  font-size: 0.8125rem;
  margin-left: 0.55rem;
}
.glossary dd { margin: 0; color: var(--ink-2); max-width: 40rem; }
.glossary dd p { margin: 0 0 0.7rem; }
.glossary dd p:last-child { margin-bottom: 0; }

.source-group { margin-bottom: 3rem; }
.source-group:last-child { margin-bottom: 0; }
.source-group > h2 {
  font-size: var(--step-1);
  font-weight: 600;
  margin: 0 0 0.4rem;
}
.source-group > .muted { margin: 0 0 1rem; font-size: 0.96rem; max-width: 40rem; }

.source-list { list-style: none; margin: 0; padding: 0; }
.source-list li {
  padding: 0.7rem 0;
  border-top: 1px solid var(--rule-2);
  font-size: 0.96rem;
  max-width: 40rem;
}
.source-list li:first-child { border-top: 0; }
.source-note { display: block; color: var(--ink-3); font-size: 0.88rem; margin-top: 0.15rem; }

.source-filter {
  margin: 1.1rem 0 0;
  font-size: 0.9rem;
  color: var(--ink-2);
  background: var(--paper-2);
  border: 1px solid var(--rule-2);
  padding: 0.8rem 1rem;
  max-width: 40rem;
}

.excluded .source-list li { color: var(--ink-3); }

/* 10. Footer -------------------------------------------------------------- */

.footer {
  border-top: 1px solid var(--rule);
  margin-top: 4rem;
  padding: 2.75rem 0 3.5rem;
  background: var(--footer-bg);
  color: var(--ink-3);
}

.footer-line {
  max-width: 38rem;
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0 0 0.7rem;
  color: var(--ink-3);
}
.footer-line strong { color: var(--ink-2); font-weight: 600; }
.footer-line.muted { font-size: 0.84rem; }

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.3rem;
  font-family: var(--sans);
  font-size: 0.8125rem;
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule-2);
}
.footer-nav a { color: var(--ink-3); text-decoration: none; }
.footer-nav a:hover { color: var(--accent); text-decoration: underline; }

/* 11. Search -------------------------------------------------------------- */

.search-shade {
  position: fixed;
  inset: 0;
  background: rgba(24, 21, 17, 0.5);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 10vh 1.25rem 2rem;
  z-index: 50;
}
.search-shade[hidden] { display: none; }

.search-panel {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 6px;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 34rem;
  padding: 0.85rem;
  max-height: 78vh;
  display: flex;
  flex-direction: column;
}

#search-input {
  width: 100%;
  font-family: var(--sans);
  font-size: 1rem;
  color: var(--ink);
  padding: 0.65rem 0.75rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
}
#search-input::placeholder { color: var(--ink-3); }

.search-results {
  list-style: none;
  margin: 0.7rem 0 0;
  padding: 0;
  overflow-y: auto;
}
.search-results li { border-top: 1px solid var(--rule-2); }
.search-results li:first-child { border-top: 0; }
.search-results a {
  display: block;
  padding: 0.6rem 0.5rem;
  text-decoration: none;
  border-radius: 4px;
}
.search-results a:hover, .search-results a:focus { background: var(--rule-2); }

.search-results .r-type {
  display: block;
  font-family: var(--sans);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 0.1rem;
}
.search-results .r-title { display: block; font-size: 1rem; line-height: 1.35; }

.search-hint {
  font-family: var(--sans);
  font-size: 0.75rem;
  color: var(--ink-3);
  margin: 0.7rem 0 0.15rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--rule-2);
}

/* 12. Responsive ---------------------------------------------------------- */

/* Four links and two tools fit comfortably down to about 700px, so the
   Menu control only appears below that. */
@media (max-width: 46rem) {
  .masthead-inner { flex-wrap: wrap; gap: 0.75rem; }
  .menu-toggle { display: inline-block; order: 3; }

  .masthead-right {
    order: 4;
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-top: 0.5rem;
    border-top: 1px solid var(--rule-2);
  }
  .masthead-right.open { display: flex; }

  .nav { flex-direction: column; align-items: stretch; gap: 0; font-size: 1rem; }
  .nav a { padding: 0.7rem 0; border-bottom: 1px solid var(--rule-2); }
  .nav a[aria-current="page"]::after { display: none; }
  .nav a[aria-current="page"] { color: var(--accent); }

  .tools { padding: 0.9rem 0 0.35rem; }
  .tool { padding: 0.45rem 0.7rem; }
}

@media (max-width: 32rem) {
  .wordmark-mark { height: 23px; }
  .hero-mark { height: 52px; margin-bottom: 1.5rem; }
  .wrap { padding: 0 1.15rem; }
  .band { padding-left: 1.15rem; padding-right: 1.15rem; }
  .footer-box { padding: 1.25rem 1.2rem 1.35rem; }
  .board-cell { padding: 1.25rem 1.2rem 1.35rem; }
  .claims { gap: 0.45rem 1.25rem; }
}

/* Printing. An essay cited in someone's notes should carry its source list
   and its URLs, and none of the site furniture. */
@media print {
  .masthead, .footer-nav, .search-shade, .tools, .menu-toggle,
  .glossary-jump, .crumbs { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .wrap, .prose { max-width: none; padding: 0; }
  .prose a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 9pt; }
  .footer-box, .board-cell { border: 1px solid #999; break-inside: avoid; }
  h1, h2, h3 { break-after: avoid; }
  p, li { orphans: 3; widows: 3; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}