/* ============================================================================
   Tome Sweet Home — "the archive" theme
   Design intent: the reader is being handed something they weren't supposed to
   have. Warm dark vault by default; aged paper for readers who prefer light.
   No web fonts, no images, no JS — ~9 KB and instant on any connection.
   ========================================================================== */

:root {
  /* the vault (default) */
  --bg: #0c0c0a;
  --bg-deep: #080807;
  --surface: #14130f;
  --surface-hi: #1a1813;
  --ink: #eae4d6;
  --ink-soft: #b3ac9a;
  --ink-faint: #8b8577;
  --line: #322f25;
  --line-hi: #4a4638;
  --accent: #e0ad4a;
  --accent-soft: #241c0e;
  --stamp: #d4694a;

  --maxw: 64ch;
  --serif: Iowan Old Style, Palatino Linotype, Palatino, Book Antiqua, Georgia, "Times New Roman", serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Consolas, "Courier New", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --r: 3px;
}

@media (prefers-color-scheme: light) {
  :root {
    /* aged paper */
    --bg: #efe9dc;
    --bg-deep: #e6dfd0;
    --surface: #f8f4ea;
    --surface-hi: #fffdf7;
    --ink: #1b1913;
    --ink-soft: #4a4436;
    --ink-faint: #6e6857;
    --line: #cfc4ab;
    --line-hi: #b3a68a;
    --accent: #8f4f14;
    --accent-soft: #ece0c9;
    --stamp: #9c3b23;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--bg);
  /* faint grain + vignette, pure CSS */
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -10%, color-mix(in srgb, var(--accent) 6%, transparent), transparent 60%),
    repeating-linear-gradient(0deg, color-mix(in srgb, var(--ink) 2%, transparent) 0 1px, transparent 1px 3px);
  font-family: var(--serif);
  font-size: 1.15rem;
  line-height: 1.68;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: var(--bg-deep); }

.wrap { max-width: 1060px; margin: 0 auto; padding: 0 22px; }
.narrow { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------------------------------------------------------------- header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px) saturate(1.3);
  position: sticky; top: 0; z-index: 30;
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 64px; }

.brand {
  display: inline-flex; align-items: baseline; gap: 10px;
  font-family: var(--mono); font-size: 0.94rem; font-weight: 700;
  letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
}
.brand .mark {
  font-size: 1.05rem; color: var(--accent); letter-spacing: 0;
  transform: translateY(1px);
}
.brand:hover .mark { color: var(--ink); }

.nav { display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }
.nav a {
  font-family: var(--mono); font-size: 0.83rem; letter-spacing: 0.12em;
  text-transform: uppercase; text-decoration: none; color: var(--ink-faint);
}
.nav a:hover { color: var(--accent); }
.nav a[aria-current="page"] { color: var(--accent); }

/* ---------------------------------------------------------------- hero */
.hero { padding: 76px 0 44px; border-bottom: 1px solid var(--line); position: relative; }
.hero .eyebrow {
  font-family: var(--mono); font-size: 0.81rem; letter-spacing: 0.26em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 20px;
}
.hero h1 {
  font-size: clamp(2.1rem, 6vw, 3.5rem); line-height: 1.08; margin: 0 0 18px;
  letter-spacing: -0.03em; font-weight: 600; max-width: 22ch;
}
.hero h1 em { font-style: italic; color: var(--accent); }
.hero p.lede { font-size: 1.16rem; color: var(--ink-soft); margin: 0; max-width: 52ch; }
.hero .creed {
  margin-top: 30px; font-family: var(--mono); font-size: 0.83rem;
  letter-spacing: 0.1em; color: var(--ink-faint); text-transform: uppercase;
}

/* ---------------------------------------------------------------- sections */
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; margin: 54px 0 20px; padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.section-head h2 {
  font-family: var(--mono); font-size: 0.85rem; font-weight: 700;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-soft); margin: 0;
}
.section-head a {
  font-family: var(--mono); font-size: 0.81rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent); text-decoration: none;
}

/* ---------------------------------------------------------------- file cards */
.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 22px 22px 18px;
  display: flex; flex-direction: column; gap: 12px;
  transition: border-color .15s ease, background .15s ease, transform .15s ease;
}
.card::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 2px;
  background: var(--accent); opacity: 0; transition: opacity .15s ease;
}
.card:hover { border-color: var(--line-hi); background: var(--surface-hi); transform: translateY(-2px); }
.card:hover::before { opacity: 1; }

.card .case {
  font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-faint);
  display: flex; justify-content: space-between; gap: 10px;
}
.card .case .cat { color: var(--accent); }
.card h3 { margin: 0; font-size: 1.3rem; line-height: 1.26; letter-spacing: -0.015em; font-weight: 600; }
.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a:hover { color: var(--accent); }
.card .dek { margin: 0; color: var(--ink-soft); font-size: 1.01rem; }
.card .open {
  margin-top: auto; padding-top: 12px; border-top: 1px dashed var(--line);
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint);
  display: flex; justify-content: space-between;
}
.card:hover .open { color: var(--accent); }

.featured { grid-column: 1 / -1; padding: 30px 30px 24px; }
.featured h3 { font-size: clamp(1.6rem, 4vw, 2.2rem); }
.featured .dek { font-size: 1.1rem; }

/* ---------------------------------------------------------------- article */
article.story { padding: 54px 0 20px; }

.classbar {
  display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: center;
  padding: 10px 0; margin-bottom: 30px;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  font-family: var(--mono); font-size: 0.77rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-faint);
}
.classbar .accent { color: var(--accent); }
.classbar .spacer { margin-left: auto; }

.stamp {
  display: inline-block; padding: 3px 10px; margin: 0 0 18px;
  border: 1px solid var(--stamp); border-radius: 2px;
  color: var(--stamp); font-family: var(--mono); font-size: 0.75rem;
  letter-spacing: 0.24em; text-transform: uppercase;
  transform: rotate(-1.2deg);
}

article.story h1 {
  font-size: clamp(1.95rem, 5vw, 2.9rem); line-height: 1.12;
  letter-spacing: -0.028em; margin: 0 0 16px; font-weight: 600;
}
article.story .dek {
  font-size: 1.2rem; color: var(--ink-soft); margin: 0 0 24px;
  font-style: italic; line-height: 1.55;
}

/* the search question, surfaced as editorial intrigue */
.question {
  margin: 0 0 30px; padding: 14px 18px;
  background: var(--accent-soft); border-left: 2px solid var(--accent); border-radius: 0 var(--r) var(--r) 0;
  font-family: var(--mono); font-size: 0.87rem; line-height: 1.5;
  letter-spacing: 0.02em; color: var(--ink-soft);
}
.question b { color: var(--accent); letter-spacing: 0.14em; text-transform: uppercase; font-size: 0.76rem; display: block; margin-bottom: 5px; }

article.story .body p { margin: 0 0 1.32em; }
article.story .body > p:first-of-type::first-letter {
  float: left; font-size: 3.6em; line-height: 0.8; padding: 0.06em 0.1em 0 0;
  color: var(--accent); font-weight: 700;
}
article.story .body strong { font-weight: 650; color: var(--ink); }
article.story .body em { font-style: italic; }
article.story .body a { color: var(--accent); }

.pull {
  border-left: 2px solid var(--accent); margin: 2em 0; padding: 6px 0 6px 22px;
  font-size: 1.2rem; font-style: italic; color: var(--ink-soft);
}

.filed {
  margin: 40px 0 0; padding-top: 16px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-faint);
  display: flex; gap: 10px; flex-wrap: wrap; align-items: center;
}
.tag {
  font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.08em;
  padding: 3px 9px; border: 1px solid var(--line); border-radius: 999px;
  color: var(--ink-soft); text-decoration: none; text-transform: none;
}
.tag:hover { border-color: var(--accent); color: var(--accent); }

/* ---------------------------------------------------------------- ad slots */
.ad-slot {
  margin: 36px 0; padding: 20px; min-height: 92px;
  border: 1px dashed var(--line); border-radius: var(--r);
  background: var(--surface);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--ink-faint);
}
.ad-slot[data-filled="true"] { border: 0; padding: 0; min-height: 0; display: block; }

/* ---------------------------------------------------------------- dispatch */
.signup {
  margin: 56px 0; padding: 32px;
  background: var(--surface); border: 1px solid var(--line-hi); border-radius: var(--r);
  position: relative;
}
.signup::after {
  content: "SEALED"; position: absolute; top: 14px; right: 16px;
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.3em;
  color: var(--line-hi);
}
.signup h2 { margin: 0 0 8px; font-size: 1.4rem; font-weight: 600; letter-spacing: -0.015em; }
.signup p { margin: 0 0 18px; color: var(--ink-soft); font-size: 1rem; }
.signup form { display: flex; gap: 10px; flex-wrap: wrap; }
.signup input[type=email] {
  flex: 1 1 240px; padding: 12px 14px; font-size: 1.09rem;
  border: 1px solid var(--line-hi); border-radius: var(--r);
  background: var(--bg-deep); color: var(--ink); font-family: var(--mono);
}
.signup input[type=email]::placeholder { color: var(--ink-faint); }
.signup button, .signup a.btn {
  display: inline-block; padding: 12px 22px; border: 1px solid var(--accent); border-radius: var(--r);
  background: var(--accent); color: var(--bg-deep); text-decoration: none;
  font-family: var(--mono); font-size: 0.83rem; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase; cursor: pointer;
}
.signup button:hover, .signup a.btn:hover { background: transparent; color: var(--accent); }
.signup .note { margin: 14px 0 0; font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.06em; color: var(--ink-faint); }

/* ---------------------------------------------------------------- pager */
.pager { display: flex; gap: 8px; justify-content: center; margin: 56px 0 20px; font-family: var(--mono); }
.pager a, .pager span {
  padding: 9px 15px; border: 1px solid var(--line); border-radius: var(--r);
  text-decoration: none; color: var(--ink-faint); font-size: 0.87rem; letter-spacing: 0.1em;
}
.pager a:hover { border-color: var(--accent); color: var(--accent); }
.pager .current { background: var(--accent); border-color: var(--accent); color: var(--bg-deep); font-weight: 700; }

/* ---------------------------------------------------------------- footer */
.site-footer {
  border-top: 1px solid var(--line); margin-top: 80px; padding: 44px 0 64px;
  font-family: var(--mono); font-size: 0.83rem; letter-spacing: 0.05em; color: var(--ink-faint);
}
.site-footer .cols { display: flex; justify-content: space-between; gap: 26px; flex-wrap: wrap; }
.site-footer a { color: var(--ink-soft); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.site-footer .links { display: flex; gap: 18px; flex-wrap: wrap; }
.site-footer .colophon { margin-top: 26px; padding-top: 20px; border-top: 1px dashed var(--line); line-height: 1.9; }

/* ---------------------------------------------------------------- utility */
.prose h2 { font-size: 1.36rem; margin: 2em 0 .5em; letter-spacing: -0.015em; font-weight: 600; }
.prose h3 { font-size: 1.1rem; margin: 1.7em 0 .4em; }
.prose ul { padding-left: 1.25em; }
.prose li { margin: .4em 0; }
.prose a { color: var(--accent); }
.prose blockquote { border-left: 2px solid var(--accent); margin: 1.6em 0; padding: 4px 0 4px 20px; color: var(--ink-soft); font-style: italic; }
.table-wrap { overflow-x: auto; margin: 26px 0; }
.prose table { width: 100%; border-collapse: collapse; font-size: 1.07rem; }
.prose th {
  text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line-hi);
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.13em;
  text-transform: uppercase; color: var(--ink-faint); white-space: nowrap;
}
.prose td { padding: 11px 12px; border-bottom: 1px solid var(--line); vertical-align: top; color: var(--ink-soft); }
.prose tr:hover td { background: var(--surface); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: var(--surface); padding: 10px 16px; border-radius: var(--r); z-index: 100; }

/* ---------------------------------------------------------------- the archive index */
/* A catalogue, not a feed: accession number, title, date. */
.index { list-style: none; margin: 0 0 8px; padding: 0; border-top: 1px solid var(--line); }
.index li { border-bottom: 1px solid var(--line); }
.index li a {
  display: grid; grid-template-columns: 4.6rem 1fr auto; gap: 18px; align-items: baseline;
  padding: 13px 6px; text-decoration: none; color: var(--ink);
  transition: background .12s ease;
}
.index li a:hover { background: var(--surface); }
.index .idx { font-family: var(--mono); font-size: 0.87rem; letter-spacing: 0.1em; color: var(--ink-faint); }
.index li a:hover .idx { color: var(--accent); }
.index .ttl { font-size: 1.09rem; line-height: 1.35; }
.index .dt { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-faint); white-space: nowrap; }
@media (max-width: 560px) {
  .index li a { grid-template-columns: 3.2rem 1fr; gap: 12px; }
  .index .dt { display: none; }
}
.count { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.1em; color: var(--ink-faint); }

/* ---------------------------------------------------------------- next / previous file */
.nextprev {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin: 54px 0 0; padding-top: 22px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 0.83rem; letter-spacing: 0.1em;
}
.nextprev a { color: var(--ink-soft); text-decoration: none; max-width: 46%; }
.nextprev a:hover { color: var(--accent); }
.nextprev .dir { display: block; color: var(--ink-faint); font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 5px; }
.nextprev .to-next { text-align: right; margin-left: auto; }

/* ---------------------------------------------------------------- archival plate */
/* Real photographs only. Displayed at natural size, never upscaled — a small
   period portrait shown as a small plate reads as an archive item, whereas
   stretching it to fill the column would just look broken. */
.photo { margin: 0 0 34px; }
.photo img {
  display: block; max-width: 100%; height: auto; margin: 0 auto;
  border: 1px solid var(--line-hi); border-radius: var(--r);
  background: var(--bg-deep);
  filter: grayscale(0.35) contrast(1.02);
}
.photo figcaption { margin: 12px auto 0; display: block; }
.photo .caption {
  display: block; font-family: var(--serif); font-style: italic;
  font-size: 1.07rem; line-height: 1.55; color: var(--ink-soft);
}
.photo .meta {
  display: block; margin-top: 7px;
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.06em;
  color: var(--ink-faint);
}
.photo .meta a { color: var(--ink-faint); text-decoration: underline; text-decoration-color: var(--line-hi); }
.photo .meta a:hover { color: var(--accent); }

/* ---------------------------------------------------------------- data charts */
.chart { margin: 0 0 32px; }
.chart img {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--line); border-radius: var(--r);
  background: var(--bg-deep);
}

/* ---------------------------------------------------------------- at a glance */
.glance {
  margin: 0 0 30px; padding: 20px 22px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
}
.glance h2 {
  margin: 0 0 14px; font-family: var(--mono); font-size: 0.76rem; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent);
}
.glance dl { margin: 0; display: grid; grid-template-columns: minmax(7rem, auto) 1fr; gap: 9px 20px; }
.glance dt {
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.06em;
  color: var(--ink-faint); text-transform: uppercase; padding-top: 2px;
}
.glance dd { margin: 0; font-size: 1.13rem; line-height: 1.5; }
@media (max-width: 520px) {
  .glance dl { grid-template-columns: 1fr; gap: 3px; }
  .glance dd { margin-bottom: 10px; }
}

/* ---------------------------------------------------------------- references */
.refs { margin: 34px 0 0; padding: 20px 22px; border: 1px solid var(--line); border-radius: var(--r); }
.refs h2 {
  margin: 0 0 14px; font-family: var(--mono); font-size: 0.76rem; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-faint);
}
.refs ul { margin: 0; padding-left: 1.1em; }
.refs li { margin: 7px 0; font-size: 1.08rem; line-height: 1.5; }
.refs a { color: var(--ink-soft); text-decoration: underline; text-decoration-color: var(--line-hi); }
.refs a:hover { color: var(--accent); text-decoration-color: var(--accent); }
.refs-note {
  margin: 14px 0 0; font-family: var(--mono); font-size: 0.75rem;
  letter-spacing: 0.04em; color: var(--ink-faint);
}

/* ---------------------------------------------------------------- sourcing note */
.sourced {
  margin: 20px 0 0; padding: 12px 0 0;
  font-family: var(--mono); font-size: 0.78rem; line-height: 1.7;
  letter-spacing: 0.04em; color: var(--ink-faint);
}
.sourced a { color: var(--ink-soft); text-decoration: underline; text-decoration-color: var(--line-hi); }
.sourced a:hover { color: var(--accent); text-decoration-color: var(--accent); }

/* ---------------------------------------------------------------- per-category accent */
/* Each subject gets its own tone, so the catalogue reads as sections rather
   than one undifferentiated list. Only the accent shifts; everything else holds. */
[data-cat="Money"]      { --accent: #c9a227; }
[data-cat="Technology"] { --accent: #6aa9d8; }
[data-cat="Science"]    { --accent: #9c8ade; }
[data-cat="Movies"]     { --accent: #d97a6c; }
[data-cat="Sport"]      { --accent: #4fb3a0; }
[data-cat="History"]    { --accent: #d9a441; }

/* ================================================================ APPENDICES */
/* A reference section inside the same design system, but reading as a technical
   document rather than a story: wider measure, tabular data, visible dates. */

.crumb {
  padding: 26px 0 0; font-family: var(--mono); font-size: 0.78rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint);
}
.crumb a { color: var(--accent); text-decoration: none; }
.crumb span { margin: 0 8px; }

.learn-doc { max-width: 74ch; padding: 26px 0 20px; }
.learn-doc.wide { max-width: 1060px; }
.learn-doc h1 {
  font-size: clamp(1.9rem, 4.6vw, 2.75rem); line-height: 1.1;
  letter-spacing: -0.028em; margin: 12px 0 16px; font-weight: 600;
}
.learn-doc .dek { font-size: 1.16rem; color: var(--ink-soft); margin: 0 0 10px; font-style: italic; line-height: 1.55; }
.learn-doc .doc-meta {
  margin: 0 0 30px; font-family: var(--mono); font-size: 0.78rem;
  letter-spacing: 0.08em; color: var(--ink-faint);
}
.learn-doc h2.sub {
  margin: 40px 0 14px; font-family: var(--mono); font-size: 0.83rem; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-soft);
}
.learn-doc .verdict { font-size: 1.1rem; color: var(--ink); margin: 0 0 22px; }

.tier-spec { margin: 0 0 26px; display: grid; grid-template-columns: minmax(6rem, auto) 1fr; gap: 8px 20px; }
.tier-spec dt { font-family: var(--mono); font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-faint); padding-top: 3px; }
.tier-spec dd { margin: 0; }

.learn-sections {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px; margin: 64px 0 20px; padding-top: 28px; border-top: 1px solid var(--line);
}
.learn-sections a {
  display: block; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--surface); text-decoration: none;
}
.learn-sections a:hover { border-color: var(--accent); }
.learn-sections a[aria-current="page"] { border-color: var(--accent); background: var(--accent-soft); }
.learn-sections b { display: block; font-size: 1rem; color: var(--ink); margin-bottom: 4px; }
.learn-sections span { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.06em; color: var(--ink-faint); }

.tier-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; margin: 10px 0 30px; }
.tier-card {
  display: block; padding: 18px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--surface); text-decoration: none;
  transition: border-color .12s ease, transform .12s ease;
}
.tier-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.tier-card b { display: block; font-size: 1.06rem; color: var(--ink); margin-bottom: 7px; }
.tier-card span { display: block; font-size: 0.97rem; color: var(--ink-soft); line-height: 1.5; }
.tier-card em {
  display: block; margin-top: 11px; font-family: var(--mono); font-size: 0.75rem;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); font-style: normal;
}

.model-list { list-style: none; margin: 0 0 28px; padding: 0; border-top: 1px solid var(--line); }
.model-list li { padding: 14px 4px; border-bottom: 1px solid var(--line); display: grid; gap: 5px; }
.model-list.muted li { opacity: .62; }
.model-list a { color: var(--ink); text-decoration: none; font-size: 1.04rem; }
.model-list a:hover { color: var(--accent); text-decoration: underline; }
.model-list .specs, .model-list .lic {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.05em; color: var(--ink-faint);
}
.model-list .why { font-family: var(--serif); font-size: 1.07rem; letter-spacing: 0; line-height: 1.55; color: var(--ink-soft); }

.runtime-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; margin: 10px 0 30px; }
.runtime { padding: 18px; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
.runtime b { display: block; font-size: 1.06rem; margin-bottom: 7px; }
.runtime p { margin: 0 0 11px; font-size: 1.08rem; color: var(--ink-soft); line-height: 1.55; }
.runtime .rf, .runtime .rp { display: block; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.05em; color: var(--ink-faint); }
.runtime .rp { margin-top: 5px; color: var(--accent); }

.catalog { width: 100%; border-collapse: collapse; margin: 10px 0 34px; font-size: 1.07rem; }
.catalog th {
  text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line-hi);
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint); white-space: nowrap;
}
.catalog td { padding: 13px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.catalog tr:hover td { background: var(--surface); }
.catalog .m-name a { color: var(--ink); text-decoration: none; font-weight: 600; }
.catalog .m-name a:hover { color: var(--accent); }
.catalog .m-family { display: block; font-family: var(--mono); font-size: 0.75rem; color: var(--ink-faint); margin-top: 3px; }
.catalog .m-params, .catalog .m-mem, .catalog .m-lic, .catalog .m-for {
  font-family: var(--mono); font-size: 0.81rem; color: var(--ink-soft); white-space: nowrap;
}
.catalog .m-active { display: block; font-size: 0.75rem; color: var(--accent); margin-top: 3px; }
.catalog .m-for { white-space: normal; color: var(--ink-faint); }
.catalog .warn { display: block; color: var(--stamp); font-size: 0.75rem; margin-top: 3px; letter-spacing: 0.06em; }

.finder {
  display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end;
  margin: 0 0 22px; padding: 18px; border: 1px solid var(--line-hi);
  border-radius: var(--r); background: var(--surface);
}
.finder label { display: flex; flex-direction: column; gap: 6px; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
.finder select {
  padding: 9px 11px; border: 1px solid var(--line-hi); border-radius: var(--r);
  background: var(--bg-deep); color: var(--ink); font-family: var(--mono); font-size: 0.92rem;
}
.finder .chk { flex-direction: row; align-items: center; gap: 8px; text-transform: none; letter-spacing: 0.04em; font-size: 0.81rem; padding-bottom: 9px; }
.finder output { margin-left: auto; font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em; color: var(--accent); padding-bottom: 10px; }
.doc-meta-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: baseline; margin: 0 0 22px; }
.doc-meta-row .checked { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); }
.doc-meta-row .source { font-size: 0.99rem; color: var(--ink-faint); }

.note-box {
  margin: 30px 0; padding: 18px 20px; border-left: 2px solid var(--accent);
  background: var(--accent-soft); border-radius: 0 var(--r) var(--r) 0; font-size: 1.09rem;
}
.note-box b { display: block; margin-bottom: 6px; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); }
.note-box p { margin: 0; color: var(--ink-soft); }
.backlink { margin: 34px 0 0; font-family: var(--mono); font-size: 0.81rem; letter-spacing: 0.06em; color: var(--ink-faint); }
.backlink a { color: var(--ink-soft); text-decoration: none; }
.backlink a:hover { color: var(--accent); }

@media (max-width: 700px) {
  .catalog .m-for, .catalog th:nth-child(5) { display: none; }
  .catalog td, .catalog th { padding: 10px 7px; }
}

/* ---------------------------------------------------------------- families */
.family-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(275px, 1fr)); gap: 14px; margin: 10px 0 32px; }
.family-card {
  display: block; padding: 18px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--surface); text-decoration: none; transition: border-color .12s ease, transform .12s ease;
}
.family-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.family-card b { display: block; font-size: 1.12rem; color: var(--ink); margin-bottom: 3px; }
.family-card .org { display: block; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.08em; color: var(--ink-faint); margin-bottom: 11px; }
.family-card .lic { display: block; font-family: var(--mono); font-size: 0.76rem; color: var(--ink-soft); margin-bottom: 5px; }
.family-card .lic.nc { color: var(--stamp); }
.family-card .best { display: block; font-size: 0.99rem; color: var(--ink-faint); }
.warn-inline { color: var(--stamp); font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.06em; }

/* ---------------------------------------------------------------- access routes */
.route-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; margin: 10px 0 32px; }
.route { padding: 20px; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); display: flex; flex-direction: column; gap: 10px; }
.route[data-open="yes"] { border-left: 2px solid var(--accent); }
.route-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.route-head b { font-size: 1.1rem; }
.route-head .cost { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.06em; color: var(--accent); }
.route p { margin: 0; font-size: 1.08rem; color: var(--ink-soft); line-height: 1.55; }
.route dl { margin: 0; display: grid; grid-template-columns: minmax(4.5rem, auto) 1fr; gap: 5px 12px; }
.route dt { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); padding-top: 2px; }
.route dd { margin: 0; font-size: 0.99rem; color: var(--ink-soft); }
.route .caveat { font-size: 0.99rem; color: var(--ink-faint); border-top: 1px dashed var(--line); padding-top: 10px; }
.route .caveat b { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--stamp); display: block; margin-bottom: 4px; }
.route .examples { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 8px; }
.route .examples span {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.04em;
  padding: 3px 8px; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-faint);
}

/* ---------------------------------------------------------------- pricing */
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin: 6px 0 26px; }
.stat { padding: 16px; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
.stat b { display: block; font-size: 1.5rem; letter-spacing: -0.02em; color: var(--accent); margin-bottom: 4px; }
.stat span { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); }
.table-caption { font-size: 0.95rem; color: var(--ink-faint); margin: 0 0 14px; }
.catalog.pricing .p-name { color: var(--ink); font-weight: 600; }
.catalog.pricing .p-prov { display: block; font-family: var(--mono); font-size: 0.75rem; color: var(--ink-faint); margin-top: 3px; font-weight: 400; }
.catalog.pricing .p-ctx, .catalog.pricing .p-in, .catalog.pricing .p-out, .catalog.pricing .p-task {
  font-family: var(--mono); font-size: 0.81rem; color: var(--ink-soft); white-space: nowrap;
}
.catalog.pricing .p-task { color: var(--accent); font-weight: 700; }

/* ---------------------------------------------------------------- harnesses */
.harness-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; margin: 10px 0 32px; }
.harness-card {
  display: block; padding: 18px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--surface); text-decoration: none; transition: border-color .12s ease, transform .12s ease;
}
.harness-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.hc-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin-bottom: 6px; }
.hc-head b { font-size: 1.1rem; color: var(--ink); }
.hc-head .stars { font-family: var(--mono); font-size: 0.76rem; color: var(--accent); }
.harness-card .kind { display: block; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.06em; color: var(--ink-faint); margin-bottom: 4px; }
.harness-card .lic { display: block; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.04em; color: var(--ink-faint); margin-bottom: 10px; }
.harness-card .what { display: block; font-size: 0.97rem; color: var(--ink-soft); line-height: 1.5; }
.note-box.watch { border-left-color: var(--stamp); }
.note-box.watch b { color: var(--stamp); }

/* ---------------------------------------------------------------- tools */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; margin: 10px 0 30px; }
.tool { padding: 17px; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); display: flex; flex-direction: column; gap: 8px; }
.tc-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.tc-head a { color: var(--ink); text-decoration: none; font-size: 1.05rem; font-weight: 600; }
.tc-head a:hover { color: var(--accent); }
.tc-head .cost { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.05em; color: var(--accent); }
.tool p { margin: 0; font-size: 1.03rem; color: var(--ink-soft); line-height: 1.55; }
.tool .best { font-size: 0.98rem; color: var(--ink-faint); border-top: 1px dashed var(--line); padding-top: 9px; margin-top: auto; }

/* ============================================================== EXPLORE AI */
/* Its own product identity: cool graphite and signal cyan, rather than the
   archive's warm vault. Same infrastructure, unmistakably a different thing —
   a screenshot should read as Explore AI, not as a page of the story site. */
body.explore {
  --bg: #0a0e13;
  --bg-deep: #06090c;
  --surface: #101722;
  --surface-hi: #16202c;
  --ink: #e4edf6;
  --ink-soft: #b0c0d1;
  --ink-faint: #7d8fa4;
  --line: #26374a;
  --line-hi: #3c5470;
  --accent: #46d3c4;
  --accent-soft: #0a2622;
  --stamp: #ff8a6b;
  --maxw: 76ch;
}
@media (prefers-color-scheme: light) {
  body.explore {
    --bg: #f6f8fa;
    --bg-deep: #eceff3;
    --surface: #ffffff;
    --surface-hi: #eef2f6;
    --ink: #10171f;
    --ink-soft: #3f5064;
    --ink-faint: #5d6b7a;
    --line: #ccd6de;
    --line-hi: #aab9c6;
    --accent: #0f766e;
    --accent-soft: #dff0ee;
    --stamp: #b03a1a;
  }
}
body.explore .nav a.nav-explore,
body.explore .nav a[aria-current="page"] { color: var(--accent); }
.nav a.nav-explore { color: var(--accent); font-weight: 600; }
body.explore .site-title { letter-spacing: 0.02em; }

/* the topic map — depth tiers, used on the index and at the foot of every page */
.tier-block { margin: 0 0 26px; }
.tier-head { display: block; margin: 0 0 12px; }
.tier-head b {
  display: block; font-family: var(--mono); font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent);
}
.tier-head span { display: block; margin-top: 3px; font-size: 1.01rem; color: var(--ink-faint); }
.topic-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); gap: 9px; }
.topic-grid a {
  display: block; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--surface); color: var(--ink); text-decoration: none; font-size: 1.08rem;
  transition: border-color .12s ease;
}
.topic-grid a:hover { border-color: var(--accent); color: var(--accent); }
.topic-grid a[aria-current="page"] { border-color: var(--accent); background: var(--accent-soft); }
.learn-sections { display: block; margin: 60px 0 20px; padding-top: 30px; border-top: 1px solid var(--line); }

/* freshness — the honest half of a dated promise */
.freshness {
  margin: 0 0 22px; padding: 10px 14px; border-radius: var(--r);
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.05em;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-faint);
}
.freshness b { letter-spacing: 0.14em; text-transform: uppercase; margin-right: 6px; }
.freshness.fresh { border-color: var(--accent); }
.freshness.fresh b { color: var(--accent); }
.freshness.ageing b { color: var(--stamp); }
.freshness.stale { border-color: var(--stamp); }
.freshness.stale b { color: var(--stamp); }

/* what changed */
.change-log { margin: 10px 0 34px; }
.change-entry { padding: 20px 0; border-bottom: 1px solid var(--line); }
.change-entry time {
  display: block; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.12em;
  color: var(--accent); margin-bottom: 7px;
}
.change-entry h2 { font-size: 1.18rem; margin: 0 0 10px; font-weight: 600; }
.change-entry ul { margin: 0; padding-left: 1.2em; }
.change-entry li { margin: 6px 0; color: var(--ink-soft); font-size: 1.08rem; line-height: 1.55; }
.learn-signup { margin: 56px 0 0; }
.learn-footlink { margin: 22px 0 30px; font-family: var(--mono); font-size: 0.81rem; letter-spacing: 0.06em; }
.learn-footlink a { color: var(--ink-faint); text-decoration: none; }
.learn-footlink a:hover { color: var(--accent); }

/* Wide data tables become stacked cards on a phone. Without this the catalog is
   unusable on mobile, which is where most first visits happen. */
@media (max-width: 760px) {
  .catalog { display: block; }
  .catalog thead { display: none; }
  .catalog tbody { display: block; }
  .catalog tr {
    display: block; padding: 14px 15px; margin-bottom: 11px;
    border: 1px solid var(--line); border-radius: var(--r); background: var(--surface);
  }
  .catalog tr:hover td { background: transparent; }
  .catalog td {
    display: block; padding: 5px 0; border: 0; white-space: normal;
  }
  .catalog td::before {
    content: attr(data-label); display: block;
    font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.14em;
    text-transform: uppercase; color: var(--ink-faint); margin-bottom: 2px;
  }
  .catalog .m-name, .catalog .p-name { padding-bottom: 9px; }
  .catalog .m-name::before, .catalog .p-name::before { display: none; }
  .catalog .m-name a, .catalog .p-name { font-size: 1.05rem; }
  .catalog .m-for { color: var(--ink-faint); }
}

/* ---------------------------------------------------------------- prompt bench */
.bench-list { margin: 10px 0 40px; }
.bench-prompt {
  padding: 22px; margin-bottom: 16px; border: 1px solid var(--line);
  border-radius: var(--r); background: var(--surface);
}
.bp-head { margin-bottom: 13px; }
.bp-head h3 { margin: 0 0 4px; font-size: 1.16rem; font-weight: 600; }
.bp-head .reveals {
  display: block; font-family: var(--mono); font-size: 0.75rem;
  letter-spacing: 0.09em; text-transform: uppercase; color: var(--accent);
}
.bp-box { position: relative; margin-bottom: 14px; }
.bp-box pre {
  margin: 0; padding: 16px 17px; background: var(--bg-deep);
  border: 1px solid var(--line-hi); border-radius: var(--r);
  font-family: var(--mono); font-size: 0.92rem; line-height: 1.65;
  color: var(--ink-soft); white-space: pre-wrap; word-break: break-word;
}
.copy-btn {
  position: absolute; top: 9px; right: 9px; padding: 6px 12px;
  border: 1px solid var(--line-hi); border-radius: var(--r);
  background: var(--surface-hi); color: var(--ink-soft); cursor: pointer;
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.copy-btn.copied { border-color: var(--accent); color: var(--accent); }
.bp-what { margin: 0 0 10px; font-size: 1.09rem; line-height: 1.6; color: var(--ink-soft); }
.bp-watch {
  margin: 0; padding-top: 11px; border-top: 1px dashed var(--line);
  font-size: 1.01rem; color: var(--ink-faint);
}
.bp-watch b {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--stamp); margin-right: 6px;
}
.buy-row {
  margin: 0 0 14px; padding: 12px 15px; border: 1px solid var(--line-hi);
  border-radius: var(--r); background: var(--accent-soft); font-size: 1.06rem;
}
.buy-row a { color: var(--accent); font-weight: 600; text-decoration: none; }
.buy-row a:hover { text-decoration: underline; }
.runtime b a { color: inherit; text-decoration: none; }
.runtime b a:hover { color: var(--accent); text-decoration: underline; }
.note-box a, .change-entry a { color: var(--accent); }

/* ---------------------------------------------------------------- landing */
/* Two doors, one per section. Each carries its own accent so the difference
   between the archive and Explore AI is visible before you click anything. */
.doors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}
.door {
  display: flex; flex-direction: column; justify-content: center; gap: 13px;
  padding: clamp(40px, 6.5vw, 84px) clamp(24px, 5vw, 58px);
  min-height: 58vh;
  background: var(--bg);
  text-decoration: none;
  transition: background .16s ease;
}
.door:hover { background: var(--surface); }
.door .eyebrow { margin: 0; }
.door h2 {
  margin: 0; font-weight: 600;
  font-size: clamp(1.75rem, 3.7vw, 2.75rem);
  line-height: 1.07; letter-spacing: -0.03em; color: var(--ink);
}
.door h2 em { font-style: italic; color: var(--accent); }
.door-lede { margin: 0; max-width: 46ch; font-size: 1.05rem; line-height: 1.6; color: var(--ink-soft); }
.door-creed { margin: 0; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.05em; line-height: 1.6; color: var(--ink-faint); }
.door-cta {
  margin-top: 8px; font-family: var(--mono); font-size: 0.81rem; font-weight: 700;
  letter-spacing: 0.15em; text-transform: uppercase; color: var(--accent);
  transition: letter-spacing .16s ease;
}
.door:hover .door-cta { letter-spacing: 0.22em; }
/* Explore AI's door wears Explore AI's colour. */
.door-explore { --accent: #46d3c4; }

.head-links { display: flex; gap: 18px; }
.head-links a {
  font-family: var(--mono); font-size: 0.77rem; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--ink-faint); text-decoration: none;
}
.head-links a:hover { color: var(--accent); }
.topic-grid.starters { margin: 4px 0 60px; }

@media (max-width: 700px) {
  .door { min-height: auto; padding: 44px 22px; }
}

/* ================================================================ POLISH */
/* Focus, links, and the small details that make a page feel deliberate. */

/* Visible keyboard focus everywhere. Only the skip link had one, which meant
   anyone navigating by keyboard could not tell where they were. */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}
.skip:focus { outline: none; }

/* Links inside prose must be recognisable without depending on colour alone —
   roughly one reader in twelve cannot reliably tell these two apart. */
.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
  transition: text-decoration-color .12s ease;
}
.prose a:hover { text-decoration-color: var(--accent); text-decoration-thickness: 2px; }
.prose a:focus-visible { text-decoration-color: var(--accent); }

/* The header carries a hairline of the section colour, so which half of the
   site you are in is legible at a glance even when scrolled. */
.site-header { border-bottom-color: color-mix(in srgb, var(--accent) 32%, var(--line)); }

/* Figures should line up in columns wherever they are compared. */
.index .idx,
.glance dd,
.stat b,
.catalog td,
.freshness,
.change-entry time { font-variant-numeric: tabular-nums; }

/* Slightly more air in long-form prose now that the type is larger. */
.prose p { margin: 0 0 1.15em; }
.prose li { margin: .45em 0; }
.prose h2 { margin: 2.1em 0 .55em; }

/* Cards and panels get a touch more room to breathe. */
.card, .tier-card, .runtime, .route, .tool, .harness-card, .family-card { border-radius: 4px; }

/* Selection reads as a deliberate part of the palette rather than a default. */
::selection { background: var(--accent); color: var(--bg-deep); }
.explore ::selection, body.explore ::selection { color: #04120f; }

/* Keyboard users get a skip target that is obvious once focused. */
.skip:focus { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent); }


/* ---------------------------------------------------------------- share row */
.share {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin: 44px 0 0; padding-top: 22px; border-top: 1px solid var(--line);
}
.share-label {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint); margin-right: 6px;
}
.share a, .share button {
  padding: 7px 13px; border: 1px solid var(--line-hi); border-radius: 999px;
  background: var(--surface); color: var(--ink-soft); text-decoration: none;
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.05em; cursor: pointer;
  transition: border-color .12s ease, color .12s ease;
}
.share a:hover, .share button:hover { border-color: var(--accent); color: var(--accent); }
.share button.copied { border-color: var(--accent); color: var(--accent); }