/* ==========================================================================
   RESET + BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--size-300);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; margin: 0; }
p { margin: 0 0 1em; max-width: var(--measure); }
ul { margin: 0; padding: 0; list-style: none; }

.container {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

/* ==========================================================================
   EYEBROW / LABEL — the small mono+ochre tag used above every heading
   ========================================================================== */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: var(--size-100);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--stamp);
  margin-bottom: var(--space-2);
}
.eyebrow::before {
  content: "";
  width: 1.4em;
  height: 1px;
  background: var(--stamp);
}

/* ==========================================================================
   HEADER / NAV — a ledger tab-index, sticky, thin
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--paper);
  border-bottom: var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 3.75rem;
}
.brand {
  font-family: var(--font-display);
  font-size: var(--size-500);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
.primary-nav { display: flex; align-items: center; gap: var(--space-3); }
.primary-nav ul { display: flex; gap: var(--space-3); }
.primary-nav a {
  font-family: var(--font-mono);
  font-size: var(--size-100);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  padding: 0.3em 0;
  border-bottom: 1px solid transparent;
  transition: color var(--duration) var(--ease), border-color var(--duration) var(--ease);
}
.primary-nav a:hover { color: var(--ink); border-color: var(--line-strong); }
.primary-nav a[aria-current="true"] { color: var(--ink); border-color: var(--accent); }
.primary-nav a.nav-cta {
  font-family: var(--font-mono);
  font-size: var(--size-100);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  color: var(--accent-ink);
  background: var(--accent);
  padding: 0.6em 1em;
  border-radius: var(--radius);
  border-bottom: none;
  white-space: nowrap;
}
.nav-toggle { display: none; }

@media (max-width: 760px) {
  .site-header .container { align-items: flex-start; }
  .primary-nav { flex-wrap: wrap; row-gap: var(--space-2); }
  .primary-nav ul {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    flex-basis: 100%;
    order: 3;
    padding-block: var(--space-2) var(--space-1);
  }
  .nav-toggle {
    display: inline-flex;
    background: none;
    border: var(--border);
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: var(--size-100);
    padding: 0.5em 0.75em;
  }
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  padding-block: var(--space-6) var(--space-5);
  border-bottom: var(--border);
}
.hero h1 {
  font-size: var(--size-900);
  font-weight: 600;
  max-width: 20ch;
  margin-bottom: var(--space-3);
}
.hero__subhead {
  font-size: var(--size-500);
  color: var(--ink-soft);
  max-width: 42ch;
  margin-bottom: var(--space-4);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-2); }

.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--size-200);
  text-decoration: none;
  padding: 0.85em 1.4em;
  border-radius: var(--radius);
  border: 1px solid var(--ink);
  transition: background var(--duration) var(--ease), color var(--duration) var(--ease);
}
.btn--primary { background: var(--ink); color: var(--paper); }
.btn--primary:hover { background: var(--accent); border-color: var(--accent); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--paper); }

/* ==========================================================================
   SECTION SCAFFOLD
   ========================================================================== */
.section { padding-block: var(--space-5); border-bottom: var(--border); }
.section:last-of-type { border-bottom: none; }
.section__head { max-width: 44rem; margin-bottom: var(--space-4); }
.section__head h2 { font-size: var(--size-700); font-weight: 600; }
.section--tint { background: var(--paper-raised); }

/* ==========================================================================
   LEDGER — the signature element: pillars as chartered ledger entries
   ========================================================================== */
.ledger { display: flex; flex-direction: column; }
.ledger-entry {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: var(--space-3);
  padding-block: var(--space-4);
  border-top: var(--border);
}
.ledger-entry:last-child { border-bottom: var(--border); }
.ledger-entry__index {
  font-family: var(--font-mono);
  font-size: var(--size-700);
  color: var(--stamp);
  line-height: 1;
}
.ledger-entry__title {
  font-family: var(--font-display);
  font-size: var(--size-700);
  font-weight: 600;
  margin-bottom: 0.4em;
}
.ledger-entry__summary { color: var(--ink-soft); margin-bottom: var(--space-2); }
.ledger-entry__body { max-width: var(--measure); }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.5em; margin-top: var(--space-2); }
.tag {
  font-family: var(--font-mono);
  font-size: var(--size-100);
  border: var(--border);
  border-radius: var(--radius);
  padding: 0.3em 0.6em;
  color: var(--ink-soft);
}

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

/* ==========================================================================
   PROSE LISTS — bullet lists inside rendered markdown body copy
   (not .tag-list or .capability__items, which have their own styling)
   ========================================================================== */
.container > ul,
.ledger-entry__body ul {
  margin: 1em 0;
  max-width: var(--measure);
}
.container > ul li,
.ledger-entry__body ul li {
  position: relative;
  padding-left: 1.4em;
  margin-bottom: 0.5em;
  color: var(--ink-soft);
}
.container > ul li::before,
.ledger-entry__body ul li::before {
  content: "\2013";
  position: absolute;
  left: 0;
  color: var(--stamp);
}
.contact-box > ul {
  margin: 1em 0;
  max-width: var(--measure);
}
.contact-box > ul li {
  position: relative;
  padding-left: 1.4em;
  margin-bottom: 0.5em;
  color: #D9D0C9;
}
.contact-box > ul li::before {
  content: "\2013";
  position: absolute;
  left: 0;
  color: var(--stamp);
}

/* ==========================================================================
   CAPABILITY LEDGER — full taxonomy, native <details>/<summary> accordion
   (no JS required; fully present in the HTML for search + agent fetching)
   ========================================================================== */
.capability {
  border: var(--border);
  border-radius: var(--radius);
  background: var(--paper-raised);
  margin-bottom: var(--space-2);
}
.capability > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--size-200);
  letter-spacing: 0.02em;
}
.capability > summary::-webkit-details-marker { display: none; }
.capability > summary::after {
  content: "+";
  font-size: 1.2em;
  color: var(--stamp);
}
.capability[open] > summary::after { content: "\2212"; }
.capability__items { padding: 0 var(--space-3) var(--space-3); columns: 2; column-gap: var(--space-3); }
.capability__items li {
  color: var(--ink-soft);
  padding: 0.25em 0;
  break-inside: avoid;
}
.capability__items li::before { content: "\2013\0020"; color: var(--line-strong); }

@media (max-width: 640px) {
  .capability__items { columns: 1; }
}

/* ==========================================================================
   PROOF / CONTACT
   ========================================================================== */
.contact-box {
  background: var(--ink);
  color: var(--paper);
  padding: var(--space-5) var(--space-3);
  border-radius: var(--radius);
}
.contact-box .eyebrow { color: var(--stamp); }
.contact-box h2 { color: var(--paper); }
.contact-box p { color: #D9D0C9; }
.contact-box .btn--primary { background: var(--stamp); border-color: var(--stamp); color: var(--ink); }
.contact-box .btn--primary:hover { background: var(--paper); border-color: var(--paper); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  padding-block: var(--space-4);
  font-size: var(--size-200);
  color: var(--ink-faint);
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}