:root {
  --page: min(1180px, calc(100% - 40px));
  --hairline: hsl(var(--border-subtle));
  --line: hsl(var(--border-default));
  --canvas-color: hsl(var(--canvas));
  --surface-color: hsl(var(--surface));
  --raised-color: hsl(var(--raised));
  --text-color: hsl(var(--text));
  --strong-color: hsl(var(--text-strong));
  --muted-color: hsl(var(--text-muted));
  --faint-color: hsl(var(--text-faint));
  --accent-color: hsl(var(--accent));
  --trust-color: hsl(var(--trust));
  --live-color: hsl(var(--live));
  --drift-color: hsl(var(--drift));
  --danger-color: hsl(var(--danger));
}

* { box-sizing: border-box; }
html { color-scheme: dark; scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 8% -10%, hsl(var(--canvas-glow-primary)), transparent 34rem),
    radial-gradient(circle at 92% 14%, hsl(var(--canvas-glow-secondary)), transparent 30rem),
    var(--canvas-color);
  color: var(--text-color);
  font: 400 var(--type-body) / 1.6 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
::selection { background: hsl(var(--accent) / .25); color: var(--strong-color); }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  transform: translateY(-150%);
  padding: 8px 12px;
  border-radius: 6px;
  background: var(--strong-color);
  color: var(--canvas-color);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--hairline);
  background: hsl(var(--canvas) / .86);
  backdrop-filter: blur(18px) saturate(135%);
}

.nav-shell {
  width: var(--page);
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
  text-decoration: none;
}
.brand-mark {
  width: 38px;
  height: 28px;
  object-fit: contain;
  filter: brightness(1.8) saturate(.35);
  opacity: .86;
}
.brand-copy { display: grid; gap: 1px; }
.brand-network,
.eyebrow,
.section-index,
.field-label,
.status-label,
.meta-label {
  color: var(--faint-color);
  font: 600 var(--type-metadata) / 1.3 var(--font-mono);
  letter-spacing: .14em;
  text-transform: uppercase;
}
.brand-product {
  color: var(--strong-color);
  font: 600 .9rem / 1.2 var(--font-display);
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 5px;
}
.site-nav a {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--muted-color);
  font: 600 var(--type-nav) / 1 var(--font-mono);
  text-decoration: none;
}
.site-nav a:hover,
.site-nav a:focus-visible { background: hsl(var(--raised) / .75); color: var(--strong-color); }
.site-nav a[aria-current="page"] { color: var(--accent-color); }

.page-shell { width: var(--page); margin: 0 auto; padding: 70px 0 96px; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr);
  gap: clamp(36px, 7vw, 96px);
  align-items: end;
  padding: 42px 0 78px;
}
.hero h1 {
  max-width: 780px;
  margin: 14px 0 22px;
  color: var(--strong-color);
  font: 500 clamp(3.1rem, 7vw, 6.8rem) / .94 var(--font-display);
  letter-spacing: -.045em;
}
.hero-lede {
  max-width: 710px;
  margin: 0;
  color: var(--muted-color);
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
}
.hero-note {
  padding: 18px 0 4px 22px;
  border-left: 1px solid var(--line);
}
.hero-note p { margin: 8px 0 0; color: var(--muted-color); font-size: .92rem; }

.badge {
  width: fit-content;
  min-height: 24px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: hsl(var(--surface) / .64);
  color: var(--muted-color);
  font: 700 .66rem / 1 var(--font-mono);
  letter-spacing: .09em;
  text-transform: uppercase;
  white-space: nowrap;
}
.badge::before { width: 6px; height: 6px; border-radius: 50%; background: currentColor; content: ""; }
.badge-live { border-color: hsl(var(--live) / .34); color: var(--live-color); }
.badge-local { border-color: hsl(var(--trust) / .34); color: var(--trust-color); }
.badge-gated { border-color: hsl(var(--drift) / .34); color: var(--drift-color); }
.badge-absent { color: var(--faint-color); }

.tool {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--hairline);
  padding: 36px 0;
}
.tool-head,
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 24px;
}
.tool-head h2,
.section-head h2 {
  margin: 7px 0 0;
  color: var(--strong-color);
  font: 500 clamp(1.7rem, 3vw, 2.7rem) / 1.05 var(--font-display);
  letter-spacing: -.025em;
}
.tool-head p,
.section-head p { max-width: 580px; margin: 0; color: var(--muted-color); }

.search-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}
.field-wrap { display: grid; gap: 8px; }
.field-wrap input {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
  background: hsl(var(--surface) / .78);
  color: var(--strong-color);
  font-family: var(--font-mono);
}
.field-wrap input:focus { border-color: hsl(var(--accent) / .65); box-shadow: 0 0 0 3px hsl(var(--accent) / .1); }
.field-hint { color: var(--faint-color); font-size: .78rem; }

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid hsl(var(--accent) / .48);
  border-radius: 8px;
  background: var(--accent-color);
  color: hsl(var(--text-inverse));
  cursor: pointer;
  font: 700 var(--type-button) / 1 var(--font-mono);
  letter-spacing: .06em;
  text-decoration: none;
  text-transform: uppercase;
}
.button:hover:not(:disabled) { background: hsl(var(--primary)); }
.button:focus-visible { outline: 2px solid var(--strong-color); outline-offset: 3px; }
.button:disabled { border-color: var(--line); background: hsl(var(--raised) / .58); color: var(--faint-color); cursor: not-allowed; }
.button-secondary { background: transparent; color: var(--text-color); border-color: var(--line); }
.button-secondary:hover:not(:disabled) { background: hsl(var(--raised) / .62); color: var(--strong-color); }

.result {
  min-height: 78px;
  margin-top: 22px;
  padding: 18px;
  border: 1px solid var(--hairline);
  border-radius: 8px;
  background: hsl(var(--surface) / .48);
}
.result[data-state="error"] { border-color: hsl(var(--danger) / .36); }
.result[data-state="found"] { border-color: hsl(var(--trust) / .34); }
.result[data-state="unobserved"] { border-color: hsl(var(--drift) / .34); }
.result-title { margin: 0 0 5px; color: var(--strong-color); font-weight: 650; }
.result-copy { margin: 0; color: var(--muted-color); font-size: .9rem; }
.record-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin-top: 16px; background: var(--hairline); }
.record-field { min-width: 0; padding: 13px; background: hsl(var(--surface)); }
.record-field strong { display: block; margin-top: 5px; color: var(--text-color); font: 500 .78rem / 1.45 var(--font-mono); overflow-wrap: anywhere; }
.result details { margin-top: 14px; }
.result summary { color: var(--muted-color); cursor: pointer; font-size: .8rem; }
.result pre { max-height: 300px; overflow: auto; padding: 12px; background: hsl(var(--canvas) / .7); color: var(--muted-color); font: .72rem / 1.5 var(--font-mono); white-space: pre-wrap; overflow-wrap: anywhere; }

.section { padding: 78px 0 0; }
.status-grid,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--hairline);
  background: var(--hairline);
}
.status-card,
.feature-card {
  min-width: 0;
  padding: 22px;
  background: hsl(var(--surface) / .82);
}
.status-card h3,
.feature-card h3 { margin: 14px 0 8px; color: var(--strong-color); font: 600 1rem / 1.25 var(--font-display); }
.status-card p,
.feature-card p { margin: 0; color: var(--muted-color); font-size: .87rem; }

.flow-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.flow-step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) minmax(190px, .42fr);
  gap: 18px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--hairline);
}
.flow-number { color: var(--accent-color); font: 600 .74rem / 1.6 var(--font-mono); }
.flow-step h3 { margin: 0 0 5px; color: var(--strong-color); font-size: 1rem; }
.flow-step p { margin: 0; color: var(--muted-color); font-size: .87rem; }
.flow-state { justify-self: end; }

.truth-table { width: 100%; border-collapse: collapse; }
.truth-table th,
.truth-table td { padding: 14px 12px; border-bottom: 1px solid var(--hairline); text-align: left; vertical-align: top; }
.truth-table th { color: var(--faint-color); font: 600 .68rem / 1.3 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; }
.truth-table td { color: var(--muted-color); font-size: .86rem; }
.truth-table td:first-child { color: var(--strong-color); }

.callout {
  margin-top: 72px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding: 28px;
  border: 1px solid hsl(var(--drift) / .32);
  border-radius: 8px;
  background: hsl(var(--raised) / .54);
}
.callout h2 { margin: 0 0 7px; color: var(--strong-color); font: 500 1.45rem / 1.2 var(--font-display); }
.callout p { margin: 0; max-width: 720px; color: var(--muted-color); font-size: .9rem; }

.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 24px 0 44px;
  color: var(--faint-color);
  font: .72rem / 1.5 var(--font-mono);
}
.footer-shell { width: var(--page); margin: 0 auto; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.site-footer a { color: var(--muted-color); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; align-items: start; }
  .hero-note { max-width: 620px; }
  .status-grid, .feature-grid { grid-template-columns: 1fr 1fr; }
  .flow-step { grid-template-columns: 34px minmax(0, 1fr); }
  .flow-state { grid-column: 2; justify-self: start; }
}

@media (max-width: 640px) {
  :root { --page: min(100% - 28px, 1180px); }
  .nav-shell { min-height: 58px; }
  .brand-network { display: none; }
  .brand-mark { width: 32px; }
  .site-nav a { padding: 0 8px; font-size: .68rem; }
  .site-nav a:not([aria-current="page"]) { display: none; }
  .page-shell { padding-top: 36px; }
  .hero { padding: 24px 0 52px; }
  .hero h1 { font-size: clamp(2.65rem, 15vw, 4.6rem); }
  .search-form { grid-template-columns: 1fr; }
  .status-grid, .feature-grid, .record-grid { grid-template-columns: 1fr; }
  .tool-head, .section-head, .callout { grid-template-columns: 1fr; align-items: start; }
  .tool-head, .section-head { display: grid; }
  .truth-table { display: block; overflow-x: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}