/* ----------------------------------------------------------
   SBTI for Agents — editorial zine
   Warm paper / deep ink / indigo accent.
   One color, hairline rules, marginalia, drop caps.
   ---------------------------------------------------------- */

:root {
  --bg: #f2ece0;
  --bg-2: #e8dfca;
  --bg-3: #ddd2bc;
  --fg: #13110a;
  --fg-soft: #3b352a;
  --dim: #7a7162;
  --accent: #1e3a6b;
  --accent-soft: rgba(30, 58, 107, 0.09);
  --rule: #cbc0a6;
  --rule-strong: #a89d80;

  --serif: ui-serif, 'Songti SC', 'STSongti', 'Source Han Serif SC', 'Noto Serif CJK SC',
    Georgia, 'Times New Roman', serif;
  --sans: ui-sans-serif, system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei',
    'Hiragino Sans GB', sans-serif;
  --mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace;

  --col: 700px; /* editorial column width */
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  line-height: 1.75;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(ellipse 900px 500px at 15% 5%, rgba(19, 17, 10, 0.05), transparent 65%),
    radial-gradient(ellipse 700px 500px at 90% 100%, rgba(30, 58, 107, 0.05), transparent 65%);
}

main {
  position: relative;
  z-index: 1;
  max-width: var(--col);
  margin: 0 auto;
  padding: 112px 32px 140px;
}

/* Every section + header is relative so marginalia can absolute-position */
section, header, footer { position: relative; }

/* Masthead — the § chop (same as favicon) placed in the top-left
   of main's existing padding space. Slight rotation so it reads as
   a hand-applied stamp, not a logo. Landing only. */
.masthead {
  position: absolute;
  top: 40px;
  left: 32px;
  width: 46px;
  height: 46px;
  display: block;
  border-bottom: none !important;
  transform: rotate(-3deg);
  transition: transform 0.2s ease-out;
  z-index: 2;
}
.masthead:hover {
  transform: rotate(-1deg) translateY(-1px);
  border-bottom: none !important;
}
.masthead svg {
  display: block;
  width: 100%;
  height: 100%;
}
@media (max-width: 720px) {
  .masthead {
    top: 28px;
    left: 24px;
    width: 40px;
    height: 40px;
  }
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */

p { margin: 0.9rem 0; }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s, color 0.15s;
}
a:hover { border-bottom-color: var(--accent); }

code {
  font-family: var(--mono);
  background: var(--accent-soft);
  padding: 1px 6px;
  border-radius: 2px;
  font-size: 0.88em;
  color: var(--accent);
}

pre {
  font-family: var(--mono);
  background: var(--bg-2);
  border: none;
  border-left: 2px solid var(--accent);
  padding: 22px 26px;
  font-size: 0.9em;
  line-height: 1.7;
  margin: 0;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--fg);
}

.dim { color: var(--dim); }

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: -0.012em;
  color: var(--fg);
}

h2 {
  font-size: 1.8rem;
  margin: 0 0 1.4rem;
  line-height: 1.18;
}

h3 {
  font-family: var(--mono);
  font-size: 0.7rem;
  margin: 2.5rem 0 0.9rem;
  color: var(--dim);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

/* ============================================================
   SECTION RHYTHM + MARGINALIA
   ============================================================ */

section {
  margin-top: 5.5rem;
}

hr, .rule {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 5.5rem 0;
}

/* Section mark: en-label · §NN. Lives in the left gutter on wide
   viewports (editorial marginalia), inline above h2 on narrow. */
.section-mark {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin: 0 0 1.1rem;
}

@media (min-width: 1100px) {
  .section-mark {
    position: absolute;
    left: -180px;
    top: 0.35rem;
    width: 150px;
    margin: 0;
    text-align: right;
    line-height: 1.4;
  }
}

/* ============================================================
   HERO (landing)
   ============================================================ */

.hero { margin-bottom: 1.5rem; }

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  color: var(--accent);
  text-transform: uppercase;
  margin: 0 0 2rem;
}

.title-hero {
  font-family: var(--serif);
  font-size: clamp(4rem, 13vw, 8rem);
  font-weight: 800;
  letter-spacing: -0.055em;
  line-height: 0.85;
  margin: 0;
  color: var(--fg);
}
.title-hero .dot { color: var(--accent); }

.hero-zh {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 3.5vw, 1.8rem);
  font-weight: 600;
  color: var(--fg);
  margin: 1.2rem 0 0;
  letter-spacing: 0.02em;
}

.hero-tag {
  color: var(--dim);
  margin: 0.7rem 0 0;
  font-size: 1rem;
}
.hero-tag .sep {
  color: var(--accent);
  margin: 0 0.45em;
  font-weight: 700;
}

/* ============================================================
   CTA — copy-prompt block
   ============================================================ */

.cta p { color: var(--fg-soft); }

.prompt {
  position: relative;
  margin: 1.4rem 0 1rem;
}
.prompt pre { padding-right: 92px; }

.copy-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--fg);
  border-radius: 0;
  padding: 6px 16px;
  font-size: 0.74em;
  font-family: var(--mono);
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: background 0.15s, color 0.15s, transform 0.1s;
}
.copy-btn:hover {
  background: var(--fg);
  color: var(--bg);
  transform: translateY(-1px);
}
.copy-btn:active { transform: translateY(0); }
.copy-btn.copied {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.cta-note {
  color: var(--dim);
  font-size: 0.94em;
}

.cta-codex {
  margin-top: 2rem;
  padding: 22px 26px;
  background: var(--bg-2);
  border-left: 2px solid var(--accent);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
}
.cta-codex-text {
  color: var(--fg);
  margin: 0;
  font-family: var(--serif);
  font-size: 1.05rem;
  font-style: italic;
}
.cta-codex a {
  border-bottom: 1px solid var(--accent);
  white-space: nowrap;
  font-weight: 600;
  font-family: var(--mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Secondary CTA — MCP native-client alternate.
   Collapsed by default (<details>) because MCP setup is more
   involved than the skill path. */
details.cta-alt {
  margin-top: 3rem;
  padding-top: 2.2rem;
  border-top: 1px solid var(--rule);
}

.cta-alt-summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0;
  margin: 0;
  user-select: none;
}
.cta-alt-summary::-webkit-details-marker {
  display: none;
}
.cta-alt-summary::before {
  content: '+';
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--accent);
  width: 0.9rem;
  text-align: center;
  line-height: 1;
  flex-shrink: 0;
  font-weight: 700;
}
details.cta-alt[open] .cta-alt-summary::before {
  content: '−';
}

.cta-alt-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--dim);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex: 0 0 auto;
}

.cta-alt-hint {
  font-family: var(--serif);
  font-style: italic;
  color: var(--dim);
  font-size: 0.88rem;
  letter-spacing: 0;
  text-transform: none;
  flex: 1;
}
details.cta-alt[open] .cta-alt-hint {
  opacity: 0.55;
}

.cta-alt-summary:hover::before,
.cta-alt-summary:hover .cta-alt-label {
  color: var(--fg);
}

.cta-alt-body {
  padding-top: 1.6rem;
  animation: cta-alt-fadein 0.25s ease-out;
}

@keyframes cta-alt-fadein {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.cta-alt-body p {
  color: var(--fg-soft);
  font-size: 0.96rem;
}

.cta-alt-body .prompt pre {
  background: var(--bg-2);
  font-size: 0.8em;
  padding: 16px 20px;
  padding-right: 84px;
}

.cta-sub-label {
  font-family: var(--serif);
  font-size: 1rem !important;
  color: var(--fg) !important;
  font-weight: 600;
  margin: 1.8rem 0 0.6rem !important;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}
.cta-sub-label > span:first-child {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--accent);
  font-size: 0.85em;
  font-style: normal;
}

/* ============================================================
   HALL — stat hero + tally + recent
   ============================================================ */

.hall-stat {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 2.2rem;
  margin: 0 0 3.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--fg);
}

.stat-num {
  font-family: var(--serif);
  font-weight: 800;
  color: var(--accent);
  line-height: 0.85;
  letter-spacing: -0.05em;
  font-variant-numeric: tabular-nums;
  font-size: clamp(3rem, 8vw, 4.5rem); /* default single-digit */
}
.stat-num[data-size='md'] { font-size: clamp(4rem, 11vw, 5.5rem); }
.stat-num[data-size='lg'] { font-size: clamp(5rem, 13vw, 7rem); }

.stat-meta {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-width: 0;
}

.stat-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg);
}

.stat-mini {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 0.25rem 1.2rem;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--dim);
}
.stat-mini dt {
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.stat-mini dd {
  color: var(--fg);
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.stat-mini dd .accent { color: var(--accent); font-weight: 600; }

/* -- tally bars (replaces the old proportional bar chart) -- */

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

.dist-bars li {
  display: grid;
  grid-template-columns: 180px 1fr 2.4rem;
  align-items: center;
  gap: 1.4rem;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
}
.dist-bars li:first-child { border-top: 1px solid var(--rule); }

.bar-label {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  min-width: 0;
}
.bar-code {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--fg);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}
.bar-cn {
  font-family: var(--serif);
  color: var(--dim);
  font-style: italic;
  font-size: 0.95rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tally {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  align-items: center;
  min-width: 0;
}
.tally-mark {
  display: inline-block;
  width: 9px;
  height: 9px;
  background: var(--accent);
  border-radius: 1px;
  flex-shrink: 0;
}
.tally-more {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--dim);
  margin-left: 4px;
}

.bar-n {
  text-align: right;
  font-family: var(--mono);
  color: var(--fg);
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

/* -- model breakdown (secondary) -- */

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

.dist-small li {
  padding: 7px 0;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--dim);
  border-bottom: 1px solid var(--rule);
  gap: 12px;
}
.dist-small li:last-child { border-bottom: none; }
.dist-small .code {
  color: var(--fg);
  background: none;
  padding: 0;
  font-weight: 500;
}

/* -- recent tests: featured first, compressed after -- */

.recent {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: recent;
}

.recent li {
  counter-increment: recent;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.recent li:first-child {
  border-top: 2px solid var(--fg);
  padding: 32px 0 30px;
}

.recent-idx {
  font-family: var(--mono);
  font-size: 0.66rem;
  color: var(--dim);
  letter-spacing: 0.2em;
  margin: 0 0 0.8rem;
  text-transform: uppercase;
}
.recent-idx::before { content: 'N° ' counter(recent, decimal-leading-zero); }

.recent-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 24px;
  margin-bottom: 0.5rem;
}

.recent-name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--fg);
  line-height: 1.2;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s;
}
.recent li:first-child .recent-name {
  font-size: 1.85rem;
}
.recent-name:hover { border-bottom-color: var(--fg); }

.recent-result {
  text-align: right;
  font-family: var(--mono);
  white-space: nowrap;
  line-height: 1.3;
}
.recent-result .code {
  display: block;
  font-weight: 800;
  color: var(--accent);
  font-size: 0.95rem;
  background: none;
  padding: 0;
  letter-spacing: 0.02em;
}
.recent-result .cn {
  display: block;
  font-family: var(--serif);
  color: var(--dim);
  font-size: 0.85rem;
  font-weight: 500;
  font-style: italic;
  margin-top: 0.15rem;
}
.recent-result .pct {
  display: block;
  font-size: 0.72rem;
  color: var(--dim);
  margin-top: 0.25rem;
  font-weight: 500;
}

.recent-meta {
  color: var(--dim);
  font-family: var(--mono);
  font-size: 0.72rem;
  margin: 0.15rem 0 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.recent-bio {
  color: var(--fg-soft);
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.96rem;
  line-height: 1.65;
  margin: 0;
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--rule-strong);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.recent li:first-child .recent-bio {
  -webkit-line-clamp: 5;
  font-size: 1.02rem;
}

.recent-more {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
  text-align: center;
  padding: 18px 0 0;
  background: none;
  border: none;
  cursor: pointer;
  width: 100%;
  border-top: 1px solid var(--rule);
  margin-top: 0.6rem;
  transition: color 0.15s;
}
.recent-more:hover { color: var(--accent); }

/* ============================================================
   TEST DETAIL — agent-first hero → personality stamp
   ============================================================ */

.back-link {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--dim);
  margin: 0 0 3.5rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-bottom: none;
}
.back-link:hover { color: var(--accent); border-bottom: none; }

.result-head {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 52px;
  align-items: start;
  margin: 0 0 4rem;
}

.result-body { min-width: 0; }

.result-agent { margin-bottom: 0.5rem; }

.agent-name-hero {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.022em;
  margin: 0.4rem 0 0.7rem;
  color: var(--fg);
}

.agent-meta-hero {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 1.2rem;
}

.agent-bio-hero {
  margin: 0;
  padding: 4px 0 4px 20px;
  border-left: 2px solid var(--accent);
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.72;
  color: var(--fg-soft);
  quotes: none;
}

.result-divider {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin: 2.5rem 0 1.8rem;
  color: var(--dim);
}
.result-divider::before,
.result-divider::after {
  content: '';
  flex: 1;
  border-top: 1px solid var(--rule);
}
.divider-ornament {
  color: var(--accent);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.divider-text {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.result-personality { margin-top: 0; }

.seal-code {
  font-family: var(--mono);
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.005em;
  line-height: 0.92;
  margin: 0;
}
.seal-cn {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 700;
  margin: 0.4rem 0 0.5rem;
  color: var(--fg);
}
.seal-intro {
  font-family: var(--serif);
  font-style: italic;
  color: var(--accent);
  font-size: 1.1rem;
  margin: 0;
}

.portrait-link {
  color: inherit;
  border-bottom: none !important;
  display: block;
  transition: transform 0.2s;
  grid-column: 2;
  align-self: start;
  position: sticky;
  top: 2rem;
}
.portrait-link:hover { transform: translateY(-2px); }

.result-portrait {
  margin: 0;
  padding: 6px;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  position: relative;
  transition: border-color 0.15s;
}
.portrait-link:hover .result-portrait { border-color: var(--fg); }
.result-portrait::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(19, 17, 10, 0.08);
}
.result-portrait img {
  display: block;
  width: 100%;
  max-height: 240px;
  object-fit: cover;
  object-position: center top;
  filter: contrast(1.02) saturate(0.98);
}

@media (max-width: 720px) {
  .result-head {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .portrait-link {
    grid-column: 1;
    max-width: 260px;
    position: static;
  }
}

/* ============================================================
   DESC — with drop cap
   ============================================================ */

.desc p {
  font-size: 1.04rem;
  line-height: 1.95;
  color: var(--fg);
  text-align: justify;
  hyphens: auto;
  margin: 0 0 1rem;
}
.desc p:first-child::first-letter,
.type-desc::first-letter {
  font-family: var(--serif);
  font-size: 3.3em;
  float: left;
  line-height: 0.85;
  padding: 0.08em 0.12em 0 0;
  color: var(--accent);
  font-weight: 700;
}

/* ============================================================
   DIMS + TOP3
   ============================================================ */

.dims {
  list-style: none;
  padding: 0;
  margin: 0;
}
.dims li {
  padding: 9px 0;
  border-bottom: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  font-family: var(--mono);
  font-size: 0.85rem;
}
.dims li:last-child { border-bottom: none; }
.dims .code { color: var(--fg); background: none; padding: 0; font-weight: 700; }
.dims .level { color: var(--accent); font-weight: 700; }
.dims .raw { color: var(--dim); }

.top3 {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: top;
}
.top3 li {
  counter-increment: top;
  padding: 12px 0 12px 2.6rem;
  border-bottom: 1px solid var(--rule);
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.top3 li:last-child { border-bottom: none; }
.top3 li::before {
  content: counter(top, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--accent);
  font-weight: 700;
  top: 15px;
  letter-spacing: 0.05em;
}
.top3 .code { font-family: var(--mono); font-weight: 700; color: var(--fg); background: none; padding: 0; }
.top3 .cn { color: var(--dim); font-family: var(--serif); font-style: italic; }
.top3 .pct { margin-left: auto; font-family: var(--mono); font-size: 0.88rem; color: var(--accent); font-weight: 700; }

/* ============================================================
   Q&A TRANSCRIPT — inline options
   ============================================================ */

.qa-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: qa;
}

.qa-list > li {
  counter-increment: qa;
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
}
.qa-list > li:first-child { border-top: 1px solid var(--fg); }

.qa-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 0.3rem;
  font-family: var(--mono);
  font-size: 0.66rem;
  color: var(--dim);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.qa-idx::before { content: 'N° ' counter(qa, decimal-leading-zero); }
.qa-dim { color: var(--accent); }

.qa-text {
  font-family: var(--serif);
  color: var(--fg);
  font-size: 1rem;
  line-height: 1.65;
  margin: 0 0 0.5rem;
}

.qa-opts {
  list-style: none;
  padding: 0;
  margin: 0.4rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.6rem;
}

.qa-opt {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--serif);
  font-size: 0.95rem;
  line-height: 1.4;
  color: var(--dim);
}

.qa-opt-mark {
  font-family: var(--mono);
  color: var(--rule-strong);
  font-size: 0.75em;
  line-height: 1;
  flex-shrink: 0;
}

.qa-opt-label { color: var(--dim); }

.qa-opt-chosen { color: var(--fg); }
.qa-opt-chosen .qa-opt-mark { color: var(--accent); }
.qa-opt-chosen .qa-opt-label {
  color: var(--fg);
  font-weight: 600;
  font-style: italic;
}

/* ============================================================
   CODEX PAGE — type list with bigger portraits
   ============================================================ */

.codex-hero { margin-bottom: 1rem; }
.codex-title {
  font-family: var(--serif);
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.88;
  margin: 0;
  color: var(--fg);
}
.codex-sub {
  font-family: var(--serif);
  color: var(--dim);
  margin: 1.2rem 0 0;
  font-size: 1.1rem;
  font-style: italic;
}

.types-list {
  margin-top: 3rem;
  counter-reset: type;
}

.type-card {
  counter-increment: type;
  padding: 3rem 0;
  border-top: 1px solid var(--rule);
  position: relative;
}
.type-card:first-child { border-top: 2px solid var(--fg); }
.type-card:last-child { border-bottom: 1px solid var(--rule); }

.type-num {
  font-family: var(--mono);
  font-size: 0.66rem;
  color: var(--accent);
  letter-spacing: 0.22em;
  margin: 0 0 1.1rem;
  text-transform: uppercase;
}
.type-num::before { content: 'N° ' counter(type, decimal-leading-zero); }

/* Marginalia: push the N° into the gutter on wide screens */
@media (min-width: 1100px) {
  .type-num {
    position: absolute;
    left: -180px;
    top: 3.5rem;
    width: 150px;
    text-align: right;
    margin: 0;
  }
}

.type-body {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 36px;
  align-items: start;
}

.type-portrait-link,
.type-code-link {
  color: inherit;
  border-bottom: none !important;
  display: block;
  transition: transform 0.2s;
}
.type-portrait-link { grid-row: span 2; }
.type-portrait-link:hover { transform: translateY(-2px); }
.type-code-link:hover .type-code { color: var(--fg); }
.type-portrait-link:hover .type-portrait { border-color: var(--fg); }

.type-portrait {
  margin: 0;
  padding: 6px;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  position: relative;
  transition: border-color 0.15s;
}
.type-portrait::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(19, 17, 10, 0.08);
}
.type-portrait img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center top;
  filter: contrast(1.02) saturate(0.98);
}

.type-text { min-width: 0; }

.type-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 0.4rem;
}
.type-code {
  font-family: var(--mono);
  color: var(--accent);
  font-weight: 800;
  font-size: 2.1rem;
  letter-spacing: 0.002em;
  background: none;
  padding: 0;
  line-height: 1;
}
.type-cn {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--fg);
  line-height: 1.1;
}
.type-intro {
  font-family: var(--serif);
  font-style: italic;
  color: var(--accent);
  margin: 0.5rem 0 1.1rem;
  font-size: 1.08rem;
}
.type-desc {
  color: var(--fg);
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.85;
  text-align: justify;
  hyphens: auto;
}

@media (max-width: 720px) {
  .type-body { grid-template-columns: 1fr; gap: 20px; }
  .type-portrait-link { max-width: 220px; }
}

/* ============================================================
   FOOTER — colophon with ornament
   ============================================================ */

footer {
  margin-top: 7rem;
  padding-top: 3rem;
  text-align: center;
  color: var(--dim);
  font-size: 0.82rem;
  border-top: 1px solid var(--rule);
}

footer::before {
  content: '※';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -55%);
  display: block;
  background: var(--bg);
  padding: 0 0.9rem;
  color: var(--accent);
  font-size: 1.1rem;
  line-height: 1;
}

footer p { margin: 0.45rem 0; }
footer p:first-of-type { margin-top: 0.4rem; }

.footer-nav {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1.4rem !important;
}
.footer-nav a {
  color: var(--fg);
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}
.footer-nav a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.footer-sep {
  color: var(--rule-strong);
  margin: 0 0.6em;
}

.summary {
  font-family: var(--serif);
  color: var(--accent);
  font-size: 1.1rem;
  font-style: italic;
}

/* ============================================================
   /HOW — explainer page prose
   ============================================================ */

.prose p {
  font-size: 1.04rem;
  line-height: 1.95;
  color: var(--fg);
  margin: 0 0 1rem;
}

.prose p.lede {
  font-family: var(--serif);
  font-size: 1.18rem;
  line-height: 1.85;
  color: var(--fg);
}
.prose p.lede::first-letter {
  font-family: var(--serif);
  font-size: 3.3em;
  float: left;
  line-height: 0.85;
  padding: 0.08em 0.12em 0 0;
  color: var(--accent);
  font-weight: 700;
}

.prose .dim {
  font-size: 0.93rem;
  line-height: 1.75;
}

.prose blockquote.callout {
  margin: 1.8rem 0;
  padding: 18px 22px;
  background: var(--bg-2);
  border-left: 3px solid var(--accent);
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--fg);
}
.prose blockquote.callout em {
  color: var(--accent);
  font-style: italic;
  font-weight: 600;
}

/* -- numbered flow steps -- */

.flow-steps {
  list-style: none;
  padding: 0;
  margin: 2.5rem 0 0;
}

.flow-steps > li {
  position: relative;
  padding: 1.8rem 0 1.8rem 6rem;
  border-top: 1px solid var(--rule);
}
.flow-steps > li:last-child {
  border-bottom: 1px solid var(--rule);
}

.step-num {
  position: absolute;
  left: 0;
  top: 1.9rem;
  font-family: var(--serif);
  font-size: 3.4rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 0.85;
  letter-spacing: -0.04em;
  width: 4.8rem;
  text-align: left;
}

.flow-steps h3 {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--fg);
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
  text-transform: none;
}

.flow-steps p {
  margin: 0.5rem 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--fg);
}

.side-note {
  color: var(--dim);
  font-size: 0.93rem !important;
  font-style: italic;
  line-height: 1.7 !important;
  padding-left: 14px;
  border-left: 2px solid var(--rule);
  margin-top: 0.8rem !important;
}
.side-note strong {
  color: var(--accent);
  font-style: normal;
  font-weight: 700;
}

@media (max-width: 600px) {
  .flow-steps > li {
    padding: 1.8rem 0 1.8rem 3.5rem;
  }
  .step-num {
    font-size: 2.4rem;
    width: 3rem;
    top: 2.05rem;
  }
}

/* small help link near the hero on the landing */
.hero-help {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--dim);
  text-transform: uppercase;
  margin: 1.8rem 0 0;
}
.hero-help a {
  color: var(--dim);
  border-bottom: 1px dotted var(--dim);
}
.hero-help a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}