:root {
  --ink: #13251e;
  --ink-soft: #486057;
  --paper: #f5f4ee;
  --paper-deep: #e9e8df;
  --surface: #fffefa;
  --line: #d6d8cd;
  --forest: #0d6b50;
  --forest-dark: #064735;
  --mint: #c9f2d9;
  --mint-bright: #a6e9bf;
  --gold: #d89028;
  --red: #ad4a37;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --shadow: 0 18px 50px rgba(24, 42, 33, 0.09);
}

* { box-sizing: border-box; }
html { background: var(--paper); }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 0%, rgba(166, 233, 191, 0.35), transparent 24rem),
    var(--paper);
  font: 16px/1.62 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--forest); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--forest-dark); }
.wrap { max-width: 1040px; margin: 0 auto; padding-left: 28px; padding-right: 28px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }

.site-header {
  position: relative;
  overflow: hidden;
  color: #f6fff9;
  background: var(--forest-dark);
  border-bottom: 5px solid var(--mint-bright);
}
.site-header::after {
  content: "";
  position: absolute;
  pointer-events: none;
  width: 560px;
  height: 560px;
  right: -160px;
  top: -420px;
  border: 1px solid rgba(201, 242, 217, 0.32);
  border-radius: 50%;
  box-shadow: 0 0 0 55px rgba(201, 242, 217, 0.05), 0 0 0 110px rgba(201, 242, 217, 0.04);
}
.site-header .wrap { position: relative; z-index: 1; padding-top: 23px; padding-bottom: 28px; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #fff;
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.05em;
  text-decoration: none;
}
.brand:hover { color: #fff; }
.brand-mark {
  display: grid;
  width: 27px;
  height: 27px;
  place-items: center;
  color: var(--forest-dark);
  background: var(--mint-bright);
  border-radius: 7px;
  font: 900 17px/1 Georgia, serif;
}
.brand-dot, h1 .dot { color: var(--mint-bright); }
.hero-copy { max-width: 710px; margin-top: 42px; }
.eyebrow {
  margin: 0 0 7px;
  color: var(--forest);
  font: 700 11px/1.2 var(--mono);
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
.site-header .eyebrow { color: var(--mint-bright); }
h1 { max-width: 800px; margin: 0; font-size: clamp(34px, 5vw, 58px); line-height: 1.05; letter-spacing: -0.055em; }
.tagline { max-width: 650px; margin: 15px 0 0; color: rgba(246, 255, 249, 0.78); font-size: 18px; }

nav.tools { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 30px; }
nav.tools a {
  padding: 6px 11px;
  border: 1px solid rgba(201, 242, 217, 0.26);
  border-radius: 999px;
  color: rgba(246, 255, 249, 0.78);
  font: 600 12px/1.1 var(--mono);
  text-decoration: none;
}
nav.tools a:hover, nav.tools a[aria-current="page"] { border-color: var(--mint-bright); color: var(--forest-dark); background: var(--mint-bright); }

main { padding-top: 38px; padding-bottom: 70px; }
.solver-shell {
  position: relative;
  padding: 25px;
  background: var(--surface);
  border: 1px solid rgba(13, 107, 80, 0.22);
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.solver-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.solver-heading h2 { margin: 0; font-size: 22px; line-height: 1.15; letter-spacing: -0.035em; }
.local-badge {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--forest-dark);
  background: var(--mint);
  font: 600 11px/1.2 var(--mono);
}
.local-badge i { width: 7px; height: 7px; border-radius: 50%; background: var(--forest); }
textarea {
  width: 100%;
  min-height: 165px;
  padding: 16px;
  color: var(--ink);
  background: #fbfcf7;
  border: 1px solid var(--line);
  border-radius: 11px;
  font: 14px/1.65 var(--mono);
  resize: vertical;
}
textarea::placeholder { color: #839188; }
textarea:focus { outline: 3px solid rgba(13, 107, 80, 0.2); border-color: var(--forest); }
.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-top: 13px; }
button { font-family: inherit; }
button.go {
  border: 0;
  padding: 11px 19px;
  border-radius: 9px;
  color: #f7fff9;
  background: var(--forest);
  box-shadow: 0 3px 0 var(--forest-dark);
  font-weight: 800;
  cursor: pointer;
}
button.go:hover { background: #0b7d5d; transform: translateY(-1px); }
button.go:disabled { opacity: 0.6; cursor: progress; transform: none; }
button.ghost {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--ink-soft);
  background: transparent;
  cursor: pointer;
}
button.ghost:hover { border-color: var(--forest); color: var(--forest); }
.samples { display: flex; flex: 1 1 320px; flex-wrap: wrap; align-items: center; gap: 6px; margin-left: 8px; }
.sample-label { margin-right: 2px; color: var(--ink-soft); font: 600 11px/1 var(--mono); text-transform: uppercase; }
.samples button { padding: 5px 9px; border: 1px solid var(--line); border-radius: 999px; color: var(--forest-dark); background: var(--paper); font-size: 12px; cursor: pointer; }
.samples button:hover { border-color: var(--forest); background: var(--mint); }
.privacy { margin: 12px 0 0; color: var(--ink-soft); font-size: 12px; }
.solver-limits { margin-top: 14px; padding: 12px 14px; border: 1px solid #c8dccd; border-radius: 10px; background: #f7fbf6; color: #385047; font-size: 13px; line-height: 1.5; }
.solver-limits summary { color: var(--forest-dark); cursor: pointer; font-weight: 800; }
.solver-limits p { margin: 9px 0 0; }
.solver-limits strong { color: var(--ink); }

#output { margin-top: 24px; }
.card { padding: 20px; margin-bottom: 16px; border: 1px solid var(--line); border-radius: 15px; background: var(--surface); box-shadow: 0 8px 24px rgba(24, 42, 33, 0.04); }
.stats { display: flex; flex-wrap: wrap; gap: 10px 20px; color: var(--ink-soft); font: 12px var(--mono); }
.stats b { color: var(--ink); font-weight: 800; }
.solved-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 13px; }
.solved-head .label { color: var(--forest); font: 800 13px/1 var(--mono); letter-spacing: 0.1em; }
.solved-head .label.low { color: var(--gold); }
.solved-head .meta { color: var(--ink-soft); font: 12px var(--mono); }
.bar { height: 7px; overflow: hidden; border-radius: 99px; background: var(--paper-deep); }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--forest), #44b879); }
.plaintext { padding: 15px; border: 1px solid #bee2ca; border-left: 4px solid var(--forest); border-radius: 10px; background: #f5fcf6; font: 14px/1.7 var(--mono); white-space: pre-wrap; word-break: break-word; }
.candidate-note, .diagnostic-intro { margin: 14px 0; color: var(--ink-soft); font-size: 13px; line-height: 1.55; }
.result-kicker { margin: 16px 0 6px; color: var(--ink-soft); font: 700 12px var(--mono); letter-spacing: 0.06em; }
.diagnostic-card { border-color: #dfca8a; background: #fffcf3; }
.diagnostic-card ul { margin: 10px 0; padding-left: 20px; color: #4d4a3d; }
.diagnostic-card li { margin: 7px 0; line-height: 1.45; }
.diagnostic-card h4 { margin: 17px 0 4px; color: var(--ink); font-size: 14px; }
.diagnostic-coverage { margin-top: 15px; padding-top: 12px; border-top: 1px solid #eadfb9; color: var(--ink-soft); font-size: 12px; }
.diagnostic-coverage summary, .unverified-candidate > summary { cursor: pointer; color: var(--forest-dark); font-weight: 800; }
.diagnostic-coverage ul { margin-bottom: 0; }
.unverified-candidate { border-color: #d6d8cc; }
.unverified-candidate[open] > summary { margin-bottom: 12px; }
table.evidence { width: 100%; margin-top: 14px; border-collapse: collapse; font-size: 14px; }
table.evidence td { padding: 7px 0; border-top: 1px solid #edf0e8; vertical-align: top; }
table.evidence td:first-child { width: 130px; color: var(--ink-soft); font: 11px var(--mono); letter-spacing: 0.06em; text-transform: uppercase; }
table.evidence code { font-family: var(--mono); word-break: break-all; }
.spinner { display: inline-block; width: 16px; height: 16px; margin-right: 8px; border: 2px solid var(--paper-deep); border-top-color: var(--forest); border-radius: 50%; vertical-align: -3px; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.ad-slot { display: flex; min-height: 92px; align-items: center; justify-content: center; margin: 34px 0; border: 1px dashed #bec8be; border-radius: 12px; color: #8a988e; font: 11px var(--mono); }
article { max-width: 790px; }
article h2 { margin: 42px 0 11px; font-size: 25px; line-height: 1.18; letter-spacing: -0.035em; }
article h3 { margin: 27px 0 7px; font-size: 18px; letter-spacing: -0.02em; }
article p, article li { color: #385047; }
article code { padding: 2px 5px; border-radius: 4px; color: var(--forest-dark); background: #e5f2e7; font: 12px var(--mono); }
details.faq { padding: 14px 0; border-top: 1px solid var(--line); }
details.faq summary { cursor: pointer; font-weight: 750; }
details.faq p { margin: 8px 0 0; color: var(--ink-soft); }

/* ---- cipher wiki cards, surfaced on the home page ---- */
.wiki-grid { display: grid; gap: 14px; margin: 20px 0 6px; }
@media (min-width: 700px) { .wiki-grid { grid-template-columns: 1fr 1fr; } }
a.wiki-card {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  text-decoration: none;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
a.wiki-card:hover { border-color: var(--forest); transform: translateY(-2px); box-shadow: 0 12px 26px rgba(24, 42, 33, 0.09); }
a.wiki-card h3 { margin: 0; color: var(--forest-dark); font-size: 17px; letter-spacing: -0.02em; }
a.wiki-card p { margin: 0; color: #385047; font-size: 14px; line-height: 1.55; }
.wiki-more { margin-top: 4px; color: var(--forest); font: 700 12px var(--mono); }
a.wiki-card.featured { grid-column: 1 / -1; border-color: var(--forest); background: #f4fbf5; }
a.wiki-card.featured p { max-width: 640px; }

.support { padding: 23px; margin: 42px 0 20px; border: 1px solid #b7dbc3; border-radius: 15px; background: var(--mint); }
.support h3 { margin: 0 0 6px; font-size: 18px; letter-spacing: -0.025em; }
.support p { max-width: 680px; margin: 0 0 14px; color: var(--forest-dark); font-size: 14px; }
.support .btns { display: flex; flex-wrap: wrap; gap: 9px; }
.support a.btn { display: inline-block; padding: 8px 13px; border: 1px solid var(--forest); border-radius: 8px; color: var(--forest-dark); font-size: 13px; font-weight: 700; text-decoration: none; }
.support a.btn.primary { color: #fff; background: var(--forest); }
footer { padding: 31px 0 45px; color: #687c71; background: var(--paper-deep); border-top: 1px solid var(--line); font-size: 13px; }
footer a { color: var(--forest-dark); }

/* ---- puzzle book storefront ---- */
.products { display: grid; gap: 16px; margin: 22px 0; }
@media (min-width: 700px) { .products { grid-template-columns: 1fr 1fr; } }
.product { display: flex; flex-direction: column; padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.product.free { border-color: var(--forest); background: #f4fbf5; }
.product h3 { margin: 0 0 8px; font-size: 17px; }
.product .blurb { flex: 1; margin: 0 0 10px; color: #385047; font-size: 14px; }
.product .spec, .spec { color: var(--ink-soft); font: 12px var(--mono); }
.product .spec { margin: 0 0 14px; }
a.buy { display: inline-block; align-self: flex-start; padding: 9px 14px; border-radius: 8px; color: #fff; background: var(--forest); font-size: 14px; font-weight: 700; text-decoration: none; }
a.buy:hover { color: #fff; background: #0b7d5d; }
a.buy.ghostbuy { color: var(--forest); background: transparent; border: 1px solid var(--forest); }
.soon { color: var(--red); font: 12px var(--mono); }

@media (max-width: 620px) {
  .wrap { padding-left: 18px; padding-right: 18px; }
  .site-header .wrap { padding-top: 17px; }
  .hero-copy { margin-top: 33px; }
  .tagline { font-size: 16px; }
  nav.tools { margin-top: 24px; }
  .solver-shell { padding: 18px; border-radius: 14px; }
  .solver-heading { display: block; }
  .local-badge { margin-top: 12px; }
  .samples { margin-left: 0; }
  .solved-head { align-items: flex-start; flex-direction: column; }
}

/* --- cipher wiki and history articles ------------------------------------ */
table.facts { width: 100%; border-collapse: collapse; margin: 14px 0 6px; font-size: 14px; }
table.facts th { width: 150px; text-align: left; padding: 7px 10px; color: var(--ink-soft);
  font: 600 13px var(--mono); vertical-align: top; background: rgba(12,104,79,.045); }
table.facts td { padding: 7px 10px; border-bottom: 1px solid rgba(12,104,79,.10); }
table.facts tr:first-child th, table.facts tr:first-child td { border-top: 1px solid rgba(12,104,79,.10); }
p.note { color: var(--ink-soft); font-size: 13px; font-style: italic; }

ul.cipher-index { margin: 6px 0 18px; padding-left: 20px; }
ul.cipher-index li { margin: 5px 0; line-height: 1.5; }
ul.cipher-index a { font-weight: 600; }

ol.timeline { margin: 10px 0 24px; padding-left: 22px; }
ol.timeline li { margin: 0 0 16px; line-height: 1.6; }
ol.timeline strong { color: var(--forest); font: 700 13px var(--mono); }

ul.people, ul.famous { list-style: none; margin: 10px 0 24px; padding: 0; }
ul.people li, ul.famous li { margin: 0 0 16px; padding: 12px 14px; line-height: 1.6;
  border-left: 3px solid rgba(12,104,79,.28); background: rgba(12,104,79,.035); border-radius: 0 8px 8px 0; }
.dates { color: var(--ink-soft); font: 12px var(--mono); }
.status { display: inline-block; margin-left: 6px; padding: 1px 8px; border-radius: 999px;
  font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .04em; }
.status-solved { color: #0b6b52; background: rgba(12,104,79,.12); }
.status-unsolved, .status-partly { color: #8a2b1e; background: rgba(176,58,40,.12); }
.status-disputed, .status-unbroken, .status-proven { color: #6b5a0b; background: rgba(150,120,10,.14); }

/* ==========================================================================
   The cipher wiki — a Wikipedia-shaped encyclopedia layer over the solver.
   Compact site bar, sticky left rail with live search, white article card
   with a serif title, infobox of registry facts, auto contents box, blue
   in-article links and a category bar at the foot.
   ========================================================================== */
.wrap-wide { max-width: 1260px; }

/* --- compact site bar (wiki pages swap the hero for the article) -------- */
.site-header-compact::after { display: none; }
.site-header-compact .wrap {
  display: flex; flex-wrap: wrap; align-items: center; gap: 14px;
  padding-top: 13px; padding-bottom: 13px;
}
.site-header-compact .brand { flex: 0 0 auto; }
.wiki-wordmark {
  color: #fff;
  font: italic 700 19px/1 Georgia, "Times New Roman", serif;
  letter-spacing: 0.01em;
  text-decoration: none;
  padding-left: 16px;
  border-left: 1px solid rgba(201, 242, 217, 0.3);
}
.wiki-wordmark:hover { color: var(--mint-bright); }
.site-header-compact nav.tools { margin: 0 0 0 auto; }

/* --- two-column wiki layout --------------------------------------------- */
.wiki-layout {
  display: grid;
  grid-template-columns: 252px minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}
.wiki-side {
  position: sticky; top: 14px;
  max-height: calc(100vh - 28px);
  overflow: auto;
  padding: 2px 4px 18px 2px;
  font-size: 13.5px;
  scrollbar-width: thin;
}

/* --- sidebar: search + navigation ---------------------------------------- */
.wiki-search { position: relative; display: flex; gap: 6px; margin-bottom: 12px; }
.wiki-search-input {
  flex: 1; min-width: 0; padding: 7px 10px;
  border: 1px solid var(--line); border-radius: 7px;
  background: #fbfcf7; color: var(--ink); font: inherit; font-size: 13.5px;
}
.wiki-search-input:focus { outline: 2px solid rgba(13, 107, 80, 0.25); border-color: var(--forest); }
.wiki-search-go {
  padding: 0 13px; border: 1px solid var(--forest); border-radius: 7px;
  background: var(--forest); color: #fff; font-weight: 700; font-size: 13px; cursor: pointer;
}
.wiki-search-go:hover { background: #0b7d5d; }
.wiki-search-results {
  position: absolute; z-index: 40; top: calc(100% + 4px); left: 0; right: 0;
  background: #fff; border: 1px solid var(--line); border-radius: 9px;
  box-shadow: var(--shadow); overflow: hidden;
}
.wiki-search-hit {
  display: flex; justify-content: space-between; align-items: baseline; gap: 8px;
  padding: 8px 11px; text-decoration: none; border-bottom: 1px solid #eef0e8;
}
.wiki-search-hit:last-child { border-bottom: 0; }
.wiki-search-hit:hover, .wiki-search-hit.first { background: #f4fbf5; }
.wiki-search-hit.is-active { background: #e8efe4; }
.wiki-search-hit-title { font-weight: 650; color: var(--forest-dark); }
.wiki-search-hit-family { flex: 0 0 auto; color: var(--ink-soft); font: 11px var(--mono); }
.wiki-search-empty { padding: 9px 11px; color: var(--ink-soft); font-size: 13px; }

.wiki-side-heading {
  margin: 16px 2px 6px; color: var(--forest);
  font: 700 11px/1 var(--mono); letter-spacing: 0.09em; text-transform: uppercase;
}
.wiki-side-group {
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--surface); margin-bottom: 8px;
}
.wiki-side-group summary {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 11px; cursor: pointer; list-style: none;
  font-weight: 700; font-size: 13px; color: var(--ink);
}
.wiki-side-group summary::-webkit-details-marker { display: none; }
.wiki-side-group summary::after { content: "▾"; margin-left: 4px; color: var(--ink-soft); font-size: 11px; }
.wiki-side-group[open] summary::after { content: "▴"; }
.wiki-side-group summary a { color: inherit; text-decoration: none; }
.wiki-side-group summary a:hover { color: var(--forest); }
/* The count pushes right; the disclosure arrow sits just after it, so every
   group — with or without a link inside its summary — aligns the same way. */
.side-count {
  margin-left: auto; padding-left: 8px;
  color: var(--ink-soft); font: 600 10.5px var(--mono);
}
.wiki-side-group ul { margin: 0; padding: 3px 0 8px; list-style: none; }
.wiki-side-group li a {
  display: block; padding: 3.5px 11px;
  color: #385047; text-decoration: none; font-size: 12.8px; line-height: 1.45;
}
.wiki-side-group li a:hover { background: #f4fbf5; color: var(--forest-dark); }
.wiki-side-group li a[aria-current="page"] {
  background: var(--mint); color: var(--forest-dark); font-weight: 700;
  border-left: 3px solid var(--forest); padding-left: 8px;
}

/* --- the article card ----------------------------------------------------- */
.wiki-article {
  max-width: none;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 26px 32px 18px;
  box-shadow: 0 10px 30px rgba(24, 42, 33, 0.05);
}
.wiki-breadcrumb { margin: 0 0 10px; color: var(--ink-soft); font-size: 12.5px; }
.wiki-breadcrumb a { color: #3366cc; }
.wiki-breadcrumb .crumb-here { color: var(--ink-soft); }
.wiki-title {
  margin: 0 0 5px; max-width: none;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400; font-size: clamp(28px, 4vw, 36px);
  line-height: 1.15; letter-spacing: 0;
}
.wiki-from {
  margin: 0 0 16px; padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft); font-size: 13px;
}
.wiki-article-body { font-size: 15.5px; line-height: 1.68; }
.wiki-article-body p, .wiki-article-body li { color: #26362e; }
.wiki-article-body p:first-child { margin-top: 0; }
.wiki-article a { color: #3366cc; }
.wiki-article a:visited { color: #6b4ba6; }
.wiki-article a:hover { color: #447ff5; }
.wiki-article h2 {
  margin: 30px 0 12px; padding-bottom: 3px;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400; font-size: 24px; line-height: 1.2;
  letter-spacing: 0; border-bottom: 1px solid #cfd6d0;
}
.wiki-article h3 { margin: 22px 0 7px; font-size: 17px; letter-spacing: -0.01em; }
.section-anchor {
  margin-left: 7px; font-size: 15px; font-weight: 400;
  color: #9aa79f; text-decoration: none;
  opacity: 0; transition: opacity 0.12s ease;
}
.wiki-article h2:hover .section-anchor, .section-anchor:focus { opacity: 1; }
.wiki-seealso-more { color: var(--ink-soft); font-size: 14px; }

/* --- infobox -------------------------------------------------------------- */
.wiki-infobox {
  float: right; width: 302px; max-width: 46%;
  margin: 4px 0 18px 26px;
  border: 1px solid #b8c0bb; border-radius: 10px;
  background: #f8f9fa; font-size: 13px; line-height: 1.5;
}
.wiki-infobox-title {
  padding: 11px 12px 2px; text-align: center;
  font-family: Georgia, serif; font-size: 17px; font-weight: 700; color: var(--ink);
}
.wiki-infobox-sub {
  padding: 0 12px 9px; text-align: center;
  color: var(--ink-soft); font-size: 11.5px;
  border-bottom: 1px solid #dfe3de;
}
.wiki-infobox-table { width: 100%; border-collapse: collapse; }
.wiki-infobox-table th {
  width: 39%; padding: 6px 8px 6px 12px; text-align: left; vertical-align: top;
  color: #3d4f45; font-weight: 600;
  border-top: 1px solid #e8ebe5; background: rgba(12, 104, 79, 0.035);
}
.wiki-infobox-table td { padding: 6px 12px 6px 8px; border-top: 1px solid #e8ebe5; }
.wiki-infobox-table tr:first-child th, .wiki-infobox-table tr:first-child td { border-top: 0; }
.wiki-infobox-note {
  padding: 8px 12px; border-top: 1px solid #dfe3de;
  background: #f2f4ef; color: #5a6b61; font-size: 11.5px; font-style: italic;
}

/* --- contents box ---------------------------------------------------------- */
.wiki-toc {
  display: block; max-width: 360px;
  margin: 16px 0; padding: 10px 18px 12px;
  background: #f8f9fa; border: 1px solid #cfd6d0; border-radius: 8px;
  font-size: 13.5px;
}
.wiki-toc-title { margin-bottom: 5px; font-weight: 700; color: var(--ink); }
.wiki-toc ul { margin: 0; padding-left: 18px; list-style: none; }
.wiki-toc ul ul { padding-left: 16px; font-size: 12.5px; }
.wiki-toc ul ul li::before { content: "· "; color: var(--ink-soft); }
.wiki-toc li { margin: 3px 0; line-height: 1.45; }
.wiki-toc a { color: #3366cc; }
.wiki-toc a:visited { color: #6b4ba6; }

/* --- category bar + article footer ---------------------------------------- */
.wiki-categories {
  clear: both; margin-top: 26px; padding-top: 11px;
  border-top: 1px solid var(--line);
  font-size: 12.8px; color: var(--ink-soft);
}
.wiki-categories a { color: #3366cc; }
.wiki-categories a:visited { color: #6b4ba6; }
.wiki-article-note { margin-top: 10px; color: #7c8a81; font-size: 12px; }

/* --- solver below the article ---------------------------------------------- */
.wiki-solver { margin-top: 8px; }
.wiki-solver-title {
  margin: 28px 0 12px;
  font-family: Georgia, serif; font-weight: 400; font-size: 22px;
  border-bottom: 1px solid #cfd6d0; padding-bottom: 3px;
}

/* --- wiki main page --------------------------------------------------------- */
.mp-banner {
  padding: 16px 22px; margin-bottom: 4px;
  border: 1px solid var(--forest); border-radius: 12px; background: #f4fbf5;
}
.mp-banner h2 { margin: 0 0 6px; border-bottom: 0; padding-bottom: 0; }
.mp-banner p { margin: 0; color: #2c443a; font-size: 15px; }
.mp-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 16px 0 6px; }
.mp-box {
  padding: 13px 18px 15px; border: 1px solid #cfd6d0; border-radius: 10px;
  background: #f8f9fa; font-size: 14.5px;
}
.mp-box h2 {
  margin: 0 0 10px; padding: 0 0 6px;
  border-bottom: 1px solid #dfe3de;
  font-size: 17px; font-weight: 400;
}
.mp-box h3 { margin: 0 0 6px; font-size: 16px; }
.mp-box p { margin: 0 0 8px; color: #26362e; }
.mp-readmore { margin-bottom: 0; }
.mp-readmore a { font-weight: 650; }
.wiki-family { padding: 15px 0 8px; border-top: 1px solid #e6e9e3; }
.wiki-family:first-of-type { border-top: 0; }
.wiki-family h3 { margin: 0 0 4px; font-family: Georgia, serif; font-weight: 700; font-size: 19px; }
.wiki-family > p { margin: 0 0 10px; color: var(--ink-soft); font-size: 14px; }
.wiki-family .cipher-index { columns: 2; column-gap: 36px; }
.wiki-family .cipher-index li { break-inside: avoid; }

/* --- responsive --------------------------------------------------------------- */
@media (max-width: 1080px) {
  .wiki-layout { grid-template-columns: 1fr; gap: 18px; }
  .wiki-side { position: static; max-height: none; overflow: visible; }
  .wiki-side-nav { display: grid; gap: 8px; }
}
@media (max-width: 760px) {
  .mp-columns { grid-template-columns: 1fr; }
  .wiki-family .cipher-index { columns: 1; }
  .wiki-article { padding: 18px 16px 12px; }
  .wiki-infobox { float: none; width: 100%; max-width: 100%; margin: 12px 0 16px; }
  .site-header-compact .wrap { gap: 10px; }
  .site-header-compact nav.tools { margin-left: 0; }
}

/* --- article tabs (Wikipedia's Article/Discussion row) -------------------- */
.wiki-tabs { display: flex; gap: 3px; margin: 0 0 20px; }
.wiki-tab {
  padding: 6px 15px; border: 1px solid var(--line); border-bottom: 0;
  border-radius: 8px 8px 0 0;
  background: #f0f2ea; color: var(--ink-soft);
  font-size: 13px; font-weight: 600; text-decoration: none;
}
a.wiki-tab:hover { color: var(--forest-dark); background: #e8efe4; }
.wiki-tab.is-here { background: #fff; color: var(--ink); font-weight: 700; }

/* --- full-version chips in the family index ------------------------------- */
/* The hub's intro promises "articles marked full version"; these are the
   marks. Amber rather than the site green, so "not in the browser build"
   reads as a caveat rather than a feature. */
.chip {
  display: inline-block; vertical-align: 1px;
  padding: 1px 7px 2px; border-radius: 999px;
  font: 600 10.5px/1.5 var(--mono);
  letter-spacing: 0.02em; white-space: nowrap;
}
.chip-full {
  background: #fdf3e0; color: #7a5314;
  border: 1px solid #e8d5ae;
}

/* --- skip link -------------------------------------------------------------- */
/* Hidden until keyboard focus, visible enough to read when it appears. */
.skip-link {
  position: absolute; left: 8px; top: -48px;
  z-index: 60; padding: 9px 16px;
  background: #05230f; color: #fff;
  border-radius: 0 0 8px 8px;
  font-weight: 700; font-size: 13.5px; text-decoration: none;
  transition: top 0.12s ease-out;
}
.skip-link:focus { top: 0; }

/* --- home page "all fifty" card + sidebar random link ---------------------- */
.wiki-card.all-ciphers { background: #eef4e9; }
.wiki-card.all-ciphers:hover { background: #e3ecdc; }
.wiki-random { color: var(--forest-dark); }
.wiki-random:hover { text-decoration: underline; }

/* --- keyboard focus (visible rings on the wiki chrome) --------------------- */
a:focus-visible, button:focus-visible, summary:focus-visible,
input:focus-visible, .wiki-tab:focus-visible, .wiki-card:focus-visible {
  outline: 2px solid var(--forest-dark);
  outline-offset: 2px;
  border-radius: 4px;
}

/* --- sourced unresolved-cipher archive ---------------------------------- */
.unsolved-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 16px 0 8px;
}
.unsolved-entry {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfcf8;
}
.unsolved-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: var(--ink-soft);
  font: 700 10.5px/1.2 var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.unsolved-entry h3 { margin: 11px 0 2px; color: var(--forest-dark); }
.unsolved-date { margin: 0 0 9px; color: #6d7e74 !important; font: 12px var(--mono); }
.unsolved-entry > p { font-size: 14px; line-height: 1.58; }
.unsolved-boundary {
  margin: 12px 0 0;
  padding: 9px 10px;
  border-left: 3px solid #b36c22;
  border-radius: 0 6px 6px 0;
  background: #f8f2e8;
  color: #536359 !important;
  font-size: 13px !important;
}
.unsolved-boundary strong { color: #87501a; }
.unsolved-source { margin: 11px 0 0; font-size: 13px !important; }
.unsolved-source a { font-weight: 700; }

@media (max-width: 640px) {
  .unsolved-grid { grid-template-columns: 1fr; }
  .unsolved-entry { padding: 14px; }
}