/* Private Archive — demo20 — scholarly / academic */

:root {
  --bg: #f5efdf;
  --ink: #2b1d10;
  --ink-soft: #5a4632;
  --rule: #c8b894;
  --rule-soft: #ddd0a8;
  --teal: #0d9488;
  --red: #a23b3b;
  --measure: 36em;
  --serif: ui-serif, "Iowan Old Style", "Charter", "Georgia", "Times New Roman", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
}

* { box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--ink);
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 0.5px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--teal);
}

hr.hairline {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 1.5rem 0;
}

.smallcaps {
  font-variant: small-caps;
  letter-spacing: 0.05em;
}

.mono {
  font-family: var(--mono);
  font-size: 0.92em;
}

/* Masthead */
.masthead {
  padding: 2.75rem 0 0;
}

.brand {
  font-size: 1.55rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  margin: 0;
}

.kicker {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin: 0.35rem 0 0;
  letter-spacing: 0.02em;
}

/* Hero */
.hero {
  padding: 2rem 0 1rem;
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 2.1rem;
  line-height: 1.25;
  letter-spacing: -0.005em;
  margin: 0 0 1.25rem;
  text-wrap: balance;
}

.hero .lede {
  font-size: 1.08rem;
  color: var(--ink);
  margin: 0 0 1.75rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 1rem;
  margin: 0;
}

.cta {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--serif);
  font-size: 0.98rem;
  letter-spacing: 0.01em;
}

.cta:hover {
  background: var(--ink);
  color: var(--bg);
}

.cta-aside {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-soft);
}

/* Prose sections */
.prose {
  padding: 2.25rem 0 0.5rem;
}

.section-label {
  font-family: var(--serif);
  font-variant: small-caps;
  letter-spacing: 0.06em;
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0 0 1rem;
  border-bottom: 1px solid var(--rule-soft);
  padding-bottom: 0.5rem;
}

.prose p {
  margin: 0 0 1.05rem;
}

.prose em {
  font-style: italic;
}

/* Footnote markers */
.fn-mark {
  font-family: var(--sans);
  font-size: 0.62em;
  vertical-align: super;
  line-height: 0;
  margin-left: 0.05em;
}

.fn-mark a {
  color: var(--red);
  text-decoration: none;
  padding: 0 0.1em;
}

.fn-mark a:hover {
  text-decoration: underline;
}

/* Footnote text */
.footnotes {
  list-style: none;
  margin: 1.75rem 0 0.5rem;
  padding: 0.85rem 0 0;
  border-top: 1px solid var(--rule-soft);
  font-family: var(--sans);
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

.footnotes li {
  margin: 0 0 0.4rem;
}

.fn-back {
  color: var(--red);
  text-decoration: none;
  margin-right: 0.25rem;
}

/* Definition list */
.defs {
  margin: 0.5rem 0 1rem;
}

.defs dt {
  font-weight: 600;
  margin-top: 0.9rem;
  font-variant: small-caps;
  letter-spacing: 0.04em;
  font-size: 0.95rem;
}

.defs dd {
  margin: 0.2rem 0 0;
  padding-left: 0;
}

/* Negatives & use-case lists */
.negatives, .usecases {
  list-style: none;
  margin: 0.5rem 0 1rem;
  padding: 0;
}

.negatives li, .usecases li {
  position: relative;
  padding-left: 1.2rem;
  margin: 0 0 0.7rem;
}

.negatives li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--ink-soft);
}

.usecases li::before {
  content: "§";
  position: absolute;
  left: 0;
  color: var(--teal);
  font-size: 0.95em;
}

/* Pricing table */
.pricing {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 0.75rem;
  font-size: 0.95rem;
}

.pricing th,
.pricing td {
  text-align: left;
  padding: 0.55rem 0.5rem;
  border-bottom: 1px solid var(--rule-soft);
  vertical-align: top;
}

.pricing thead th {
  font-variant: small-caps;
  letter-spacing: 0.04em;
  font-weight: 600;
  border-bottom: 1px solid var(--rule);
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.pricing tbody th {
  font-weight: 600;
  font-style: italic;
}

.pricing tbody td:first-of-type {
  font-family: var(--mono);
  font-size: 0.86rem;
  white-space: nowrap;
}

.caveat {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-top: 0.5rem;
}

/* Downloads */
.downloads {
  list-style: none;
  margin: 0.75rem 0 1rem;
  padding: 0;
  border-top: 1px solid var(--rule-soft);
}

.downloads li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule-soft);
}

.downloads a {
  font-family: var(--mono);
  font-size: 0.88rem;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 0.5px;
}

.downloads a:hover {
  color: var(--teal);
}

.dl-aside {
  font-family: var(--sans);
  font-size: 0.76rem;
  color: var(--ink-soft);
  margin-left: auto;
  font-style: italic;
}

/* Colophon */
.colophon {
  padding: 3rem 0 4rem;
}

.colophon p {
  font-family: var(--sans);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0 0 0.85rem;
}

.colophon .section-label {
  font-family: var(--serif);
  border-bottom: 0;
  padding-bottom: 0;
  margin-bottom: 0.5rem;
  color: var(--ink);
}

.colophon a {
  color: var(--ink-soft);
}

.colophon a:hover {
  color: var(--teal);
}

.signoff {
  margin-top: 1.25rem;
  font-style: italic;
}

.dingbat {
  color: var(--teal);
  font-style: normal;
  margin-left: 0.25em;
}

/* Small screens */
@media (max-width: 32em) {
  body { font-size: 17px; }
  .hero h1 { font-size: 1.75rem; }
  .measure { padding: 0 1.15rem; }
  .dl-aside { margin-left: 0; }
}