:root {
  color-scheme: light dark;
  --paper: #f7f3ec;
  --paper-deep: #efe8dc;
  --ink: #171513;
  --ink-soft: #3d3833;
  --muted: #70675f;
  --muted-soft: #9a9086;
  --grid-column: rgba(23, 21, 19, 0.035);
  --grid-row: rgba(23, 21, 19, 0.024);
  --rule: rgba(23, 21, 19, 0.14);
  --rule-strong: rgba(23, 21, 19, 0.34);
  --rust: #ad4b2b;
  --rust-dark: #87361f;
  --panel: #fbf8f2;
  --surface: rgba(255, 255, 255, 0.24);
  --code-bg: rgba(23, 21, 19, 0.06);
  --signal-rule: rgba(173, 75, 43, 0.55);
  --signal-surface: rgba(173, 75, 43, 0.08);
  --sage-rule: rgba(61, 92, 84, 0.38);
  --sage-surface: rgba(61, 92, 84, 0.07);
  --max: 1210px;
  --reading: 760px;
  --sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: "Fraunces", "Source Serif 4", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #17130f;
    --paper-deep: #211b16;
    --ink: #f2eadf;
    --ink-soft: #d4c8bc;
    --muted: #aa9c8d;
    --muted-soft: #81756a;
    --grid-column: rgba(242, 234, 223, 0.028);
    --grid-row: rgba(242, 234, 223, 0.02);
    --rule: rgba(242, 234, 223, 0.14);
    --rule-strong: rgba(242, 234, 223, 0.28);
    --rust: #d78763;
    --rust-dark: #f1a57f;
    --panel: #1e1914;
    --surface: rgba(255, 246, 236, 0.045);
    --code-bg: rgba(255, 246, 236, 0.075);
    --signal-rule: rgba(215, 135, 99, 0.5);
    --signal-surface: rgba(215, 135, 99, 0.1);
    --sage-rule: rgba(139, 165, 154, 0.4);
    --sage-surface: rgba(139, 165, 154, 0.09);
  }
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(90deg, var(--grid-column) 1px, transparent 1px),
    linear-gradient(0deg, var(--grid-row) 1px, transparent 1px),
    var(--paper);
  background-size: 100% 100%, 100% 6px, auto;
  font-family: var(--sans);
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover { color: var(--rust-dark); }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--rust);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  padding: 0.72rem 1rem;
}

.skip-link:focus { top: 1rem; }

.preview-banner {
  position: sticky;
  top: 0;
  z-index: 80;
  padding: 0.55rem 1rem;
  border-bottom: 1px solid var(--signal-rule);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  line-height: 1.35;
  text-align: center;
  text-transform: uppercase;
}

.frame {
  width: min(calc(100% - 3rem), var(--max));
  margin: 0 auto;
}

.site-header {
  padding: 1.35rem 0 0;
}

.topbar,
.dateline {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: center;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule);
  padding: 0.82rem 0;
  font-family: var(--mono);
  font-size: clamp(0.78rem, 0.72vw, 0.88rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.brand {
  display: inline-flex;
  gap: 0.72rem;
  align-items: center;
  font-weight: 600;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 1.65rem;
  height: 1.65rem;
  letter-spacing: 0;
}

.brand-mark picture,
.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
}

.topbar nav {
  display: flex;
  justify-content: flex-end;
  gap: 1.05rem;
  flex-wrap: wrap;
}

.topbar__center,
.dateline__center {
  color: var(--muted-soft);
  text-align: center;
}

.dateline {
  border-top: 0;
  color: var(--muted);
}

.dateline__right { text-align: right; }

main {
  padding: 3.7rem 0 0;
}

.hero,
.section {
  display: grid;
  grid-template-columns: 12.5rem minmax(0, 1fr);
  gap: clamp(1.4rem, 5vw, 4rem);
  border-bottom: 1px solid var(--rule);
  padding: clamp(3rem, 8vw, 6.5rem) 0;
}

.hero { padding-top: clamp(3.5rem, 8vw, 6.4rem); }

.spine {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.17em;
  color: var(--muted);
}

.spine__num {
  display: block;
  margin-bottom: 1rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(2.25rem, 3.5vw, 3.35rem);
  line-height: 1;
  letter-spacing: -0.02em;
}

.spine__label,
.spine__meta {
  display: block;
  padding: 0.55rem 0;
  border-top: 1px solid var(--rule);
  font-size: clamp(0.74rem, 0.7vw, 0.84rem);
}

.eyebrow {
  display: flex;
  gap: 0.85rem;
  align-items: center;
  margin-bottom: 1.15rem;
  color: var(--rust);
  font-family: var(--mono);
  font-size: clamp(0.78rem, 0.7vw, 0.9rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 1.55rem;
  height: 1px;
  background: var(--rust);
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 650;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

h1 {
  max-width: 14ch;
  font-size: clamp(3.1rem, 6.25vw, 6.25rem);
  line-height: 0.94;
}

h2 {
  max-width: 14ch;
  font-size: clamp(2.45rem, 5vw, 4.9rem);
  line-height: 0.94;
}

h3 {
  font-size: clamp(1.45rem, 2.5vw, 2.15rem);
  line-height: 1;
}

em {
  color: var(--rust);
  font-style: italic;
}

p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.72;
}

.lede {
  max-width: 44rem;
  margin-top: 1.35rem;
  font-size: clamp(1.12rem, 2vw, 1.38rem);
  line-height: 1.62;
}

.actions {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.button,
.ghost {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 3.15rem;
  padding: 0.88rem 1.25rem;
  border: 1px solid var(--ink);
  border-radius: 2px;
  font-weight: 700;
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease;
}

.button {
  background: var(--ink);
  color: var(--paper);
}

.ghost {
  background: transparent;
  color: var(--ink);
}

.button:hover,
.ghost:hover {
  transform: translateY(-1px);
}

.ghost:hover {
  background: var(--paper-deep);
  color: var(--ink);
}

.proof-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--rule);
}

.proof-row div,
.fact-grid div,
.meta-grid div {
  min-width: 0;
}

.proof-row strong,
.fact-grid strong,
.meta-grid strong {
  display: block;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.proof-row span,
.fact-grid span,
.meta-grid span {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.content {
  min-width: 0;
}

.content-grid,
.card-grid,
.two-col {
  display: grid;
  gap: 1.1rem;
}

.content-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.two-col { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.rule-card,
.venture-card,
.note-card,
.offer-card,
.entry-card,
.topic-panel,
.feature-panel,
.cta-block__panel,
.search-panel,
.empty-state,
.mdx-callout,
.doctrine-note,
.inline-cta {
  border: 1px solid var(--rule);
  background: var(--surface);
  border-radius: 2px;
  padding: 1.1rem;
}

.rule-card__num,
.card-meta,
.entry-card__meta,
.entry-card__footer,
.mini {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.rule-card h3,
.venture-card h3,
.note-card h3,
.offer-card h3,
.entry-card h3,
.topic-panel h3 {
  margin-top: 0.65rem;
}

.rule-card p,
.venture-card p,
.note-card p,
.offer-card p,
.entry-card p,
.topic-panel p,
.feature-panel p {
  margin-top: 0.7rem;
}

.section-lead {
  max-width: var(--reading);
  margin-bottom: 1.5rem;
}

.quote-panel {
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule);
  padding: 1.3rem 0;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.5vw, 3rem);
  line-height: 1.05;
}

.meta-grid,
.fact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1.1rem;
}

.footer-cta {
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.footer-cta .content {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(18rem, 0.72fr);
  gap: 2rem;
  align-items: start;
}

footer {
  border-top: 1px solid var(--rule-strong);
  padding: 1.3rem 0 3rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.article-header,
.article-body,
.support-row {
  max-width: var(--reading);
}

.article-body {
  font-size: 1.04rem;
  line-height: 1.86;
}

.article-body p,
.article-body ul,
.article-body ol,
.article-body blockquote {
  margin: 0 0 1.15rem;
}

.article-body h2,
.article-body h3 {
  margin: 2rem 0 0.8rem;
}

.hero-copy,
.lede {
  color: var(--ink-soft);
}

.hero-copy {
  max-width: 44rem;
  margin-top: 1.35rem;
  font-size: clamp(1.05rem, 1.8vw, 1.24rem);
  line-height: 1.65;
}

.writing-shell,
.article-page {
  display: grid;
  gap: 3rem;
}

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.75fr);
  gap: 1rem;
  align-items: stretch;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.hero-actions,
.cta-block__actions,
.topic-row,
.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
}

.topic-pill {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 0.6rem 0.85rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.search-panel input {
  width: 100%;
  margin-top: 0.85rem;
  min-height: 3rem;
  border: 1px solid var(--rule);
  background: var(--panel);
  color: var(--ink);
  padding: 0.85rem 1rem;
  font: inherit;
}

.search-results {
  display: grid;
  gap: 0.85rem;
  margin-top: 1rem;
}

.search-result {
  border-top: 1px solid var(--rule);
  padding-top: 0.85rem;
}

.search-result strong {
  display: block;
  margin-bottom: 0.25rem;
}

.search-result p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.article-body blockquote {
  border-left: 2px solid var(--rust);
  padding-left: 1rem;
  color: var(--muted);
  font-style: italic;
}

.article-body code {
  font-family: var(--mono);
  background: var(--code-bg);
  padding: 0.12rem 0.35rem;
  border-radius: 2px;
  font-size: 0.92em;
}

.article-body pre {
  overflow: auto;
  padding: 1rem;
  border: 1px solid var(--rule);
  background: var(--panel);
}

.mdx-callout strong,
.inline-cta strong {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--ink);
  font-size: 1rem;
}

.mdx-callout--signal {
  border-color: var(--signal-rule);
  background: var(--signal-surface);
}

.mdx-callout--sage {
  border-color: var(--sage-rule);
  background: var(--sage-surface);
}

.mdx-callout__body > :last-child,
.doctrine-note__body > :last-child {
  margin-bottom: 0;
}

.doctrine-note {
  border-left: 3px solid var(--rule-strong);
}

.inline-cta-wrap {
  margin: 1.6rem 0;
}

.inline-cta p {
  margin: 0 0 0.9rem;
}

.support-row {
  display: grid;
  grid-template-columns: minmax(0, var(--reading)) minmax(0, 18rem);
  gap: 1rem;
  align-items: start;
}

.support-note {
  border: 1px solid var(--rule);
  padding: 1rem;
  background: var(--surface);
  color: var(--muted);
  line-height: 1.75;
  position: sticky;
  top: 1rem;
}

.cta-block {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(20rem, 0.95fr);
  gap: 1rem;
  align-items: start;
}

@media (max-width: 920px) {
  .topbar,
  .dateline {
    grid-template-columns: 1fr;
  }

  .topbar__center,
  .dateline__center,
  .dateline__right {
    text-align: left;
  }

  .topbar nav {
    justify-content: flex-start;
  }

  .hero,
  .section {
    grid-template-columns: 1fr;
  }

  .spine {
    display: flex;
    gap: 0.9rem;
    align-items: baseline;
    flex-wrap: wrap;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--rule-strong);
  }

  .spine__num,
  .spine__label,
  .spine__meta {
    margin: 0;
    padding: 0;
    border: 0;
  }

  .content-grid,
  .two-col,
  .split-grid,
  .topic-grid,
  .cta-block,
  .support-row,
  .footer-cta .content,
  .proof-row {
    grid-template-columns: 1fr;
  }

  .support-note {
    position: static;
  }
}

@media (max-width: 640px) {
  .frame { width: min(calc(100% - 1.5rem), var(--max)); }
  main { padding-top: 2rem; }
  .hero, .section { padding: 2.8rem 0; }
  h1 { font-size: clamp(3rem, 14vw, 4.4rem); }
  .actions, .hero-actions, .cta-block__actions { flex-direction: column; align-items: stretch; }
  .button, .ghost, .topic-pill { width: 100%; }
  .meta-grid, .fact-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}