:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --ink: #0a0a0a;
  --ink-muted: #3d4f5c;
  --ink-faint: #6b7f8c;
  --line: #d5e0e8;
  --brand-primary: #0f766e;
  --accent: #0f766e;
  --accent-soft: rgba(15, 118, 110, 0.08);
  --btn: #0f766e;
  --on-btn: #ffffff;
  --focus: #0d9488;
  --wrap: min(64rem, calc(100% - 2.5rem));
  --radius: 0.4rem;
  --font-display: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  color-scheme: light;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font: 400 1.05rem/1.55 var(--font-body);
  color: var(--ink);
  background: var(--bg);
}

a {
  color: var(--brand-primary);
}

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

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--brand-primary);
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  z-index: 20;
  padding: 0.5rem 0.75rem;
  background: var(--btn);
  color: var(--on-btn);
  text-decoration: none;
  border-radius: var(--radius);
}

.skip:focus {
  top: 0.75rem;
}

.top {
  width: var(--wrap);
  margin: 0 auto;
  padding: 1.25rem 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--ink);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.1rem;
  font-size: 0.92rem;
}

.nav a {
  text-decoration: none;
  color: var(--ink-muted);
}

.nav a:hover,
.nav-cta {
  color: var(--brand-primary);
}

.nav-cta {
  font-weight: 650;
}

.site {
  width: var(--wrap);
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.hero h1,
.prose h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.eyebrow,
.kicker,
.crumb {
  margin: 0 0 0.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-primary);
  font-weight: 650;
}

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

.lede {
  max-width: 42rem;
  color: var(--ink-muted);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.25rem 0 0;
}

.cta,
.cta-secondary,
button.cta-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 0.95rem;
  border-radius: var(--radius);
  text-decoration: none;
  font: 650 0.95rem/1 var(--font-body);
  border: 0;
  cursor: pointer;
}

.cta {
  background: var(--btn);
  color: var(--on-btn);
}

.cta-secondary {
  background: var(--accent-soft);
  color: var(--brand-primary);
}

.doors,
.cards {
  display: grid;
  gap: 1rem;
  margin: 2rem 0;
}

@media (min-width: 720px) {
  .doors,
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.door,
.card {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 1.1rem 1.15rem;
  background: var(--surface);
}

.door h2,
.card h2 {
  margin: 0 0 0.4rem;
  font-size: 1.15rem;
}

.door p,
.card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.prose h2 {
  margin: 2rem 0 0.6rem;
  font-size: 1.25rem;
}

.prose ul,
.prose ol {
  color: var(--ink-muted);
}

.map-list {
  padding-left: 1.1rem;
}

.callout {
  margin: 1.5rem 0;
  padding: 1rem 1.1rem;
  background: var(--accent-soft);
  border-radius: var(--radius);
}

.site-footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 0.9rem;
}

.not-found {
  width: var(--wrap);
  margin: 4rem auto;
}

.claim-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 960px) {
  .claim-grid {
    grid-template-columns: 1.4fr 0.9fr;
    align-items: start;
  }
}

.stack {
  display: grid;
  gap: 1.25rem;
}

html:not([data-vault-os="ios"]) [data-os="ios"] {
  display: none !important;
}

html[data-vault-os="ios"] [data-os="android"] {
  display: none !important;
}

.device-line {
  margin: 0.85rem 0 0;
  font-size: 0.88rem;
  color: var(--ink-faint);
  font-family: var(--font-mono);
}

.collected {
  margin: 2rem 0;
  padding: 1.15rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--surface);
}

.collected h2 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
}

.collected .lede {
  margin: 0 0 1rem;
}

.collected dl {
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.collected dt {
  font: 650 0.78rem/1.2 var(--font-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-primary);
}

.collected dd {
  margin: 0.25rem 0 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

/* Card identity */

.scan-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.5rem 0 0.5rem;
}

.scan-row button:disabled {
  opacity: 0.45;
}

.scan-status {
  margin: 0.35rem 0 0;
  min-height: 1.4rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.scan-status[data-kind="error"] {
  color: #b42318;
}

.scan-status[data-kind="ok"] {
  color: var(--brand-primary);
}

.card-value {
  margin: 0.15rem 0 0;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.card-note {
  margin: 0.35rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.spec-text {
  width: 100%;
  margin: 0 0 0.75rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: 400 0.85rem/1.5 var(--font-mono);
  color: var(--ink);
  background: var(--surface);
  resize: vertical;
}

.drawer {
  margin: 1rem 0;
  padding: 0.85rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--surface);
}

.drawer > summary {
  font-weight: 650;
  cursor: pointer;
  color: var(--brand-primary);
}

.drawer-note {
  margin: 0.75rem 0 0;
  font-size: 0.92rem;
  color: var(--ink-muted);
}

.card-table {
  width: 100%;
  margin: 0.85rem 0;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.card-table th,
.card-table td {
  padding: 0.4rem 0.5rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.card-table th {
  font: 650 0.74rem/1.2 var(--font-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-primary);
}

.card-table td.mono {
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.object {
  margin: 1.25rem 0;
}

.object h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.kv {
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.kv dt {
  font: 650 0.74rem/1.2 var(--font-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-primary);
}

.kv dd {
  margin: 0.15rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-muted);
  overflow-wrap: anywhere;
}

.kv dd small,
.map-list small {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.map-list small.mono-note {
  font-family: var(--font-mono);
}

.identity {
  margin: 1.75rem 0 1rem;
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--brand-primary);
  border-left-width: 4px;
  border-radius: 0.5rem;
  background: var(--accent-soft);
}

.identity-line {
  margin: 0.2rem 0 0.5rem;
  font-size: clamp(1.25rem, 3.2vw, 1.7rem);
  letter-spacing: -0.02em;
}

.identity-codes {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-muted);
  overflow-wrap: anywhere;
}

.identity-certainty {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-muted);
}

.buy {
  margin: 1rem 0 2rem;
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--surface);
}

.buy h2 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
}

.buy-note {
  margin: 0 0 0.85rem;
  font-size: 0.92rem;
  color: var(--ink-muted);
}

.buy-terms {
  margin: 0 0 1rem;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.35rem;
}

.buy-terms li.mono {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  overflow-wrap: anywhere;
}

.buy-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.card-note.prose-note {
  font-family: var(--font-body);
  font-size: 0.84rem;
  color: var(--ink-muted);
}