:root {
  color-scheme: dark;
  --surface-base: #07080a;
  --surface-panel: #0d0f12;
  --surface-elevated: #14171c;
  --surface-soft: #1a1e25;
  --surface-recessed: #101318;
  --text-primary: #f4f6f8;
  --text-secondary: #b9c0ca;
  --text-muted: #9aa2ad;
  --border-subtle: rgba(255,255,255,0.06);
  --border-strong: rgba(255,255,255,0.12);
  --accent: #9aa2ff;
  --accent-soft: rgba(154,162,255,0.16);
  --warning: #f0b66a;
  --success: #61d394;
  --danger: #ff7676;
  --info: #82c7ff;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  font-family: "Inter Variable", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-feature-settings: "cv01", "ss03";
}

:root[data-theme="light"] {
  color-scheme: light;
  --surface-base: #f7f8f8;
  --surface-panel: #ffffff;
  --surface-elevated: #f0f2f5;
  --surface-soft: #e8ebf0;
  --surface-recessed: #e3e7ed;
  --text-primary: #101114;
  --text-secondary: #414956;
  --text-muted: #5f6670;
  --border-subtle: #dfe3e8;
  --border-strong: #c5ccd6;
  --accent: #3f49bd;
  --accent-soft: rgba(63,73,189,0.12);
  --warning: #815100;
  --success: #10643f;
  --danger: #982f2f;
  --info: #245a8d;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    color-scheme: light;
    --surface-base: #f7f8f8;
    --surface-panel: #ffffff;
    --surface-elevated: #f0f2f5;
    --surface-soft: #e8ebf0;
    --surface-recessed: #e3e7ed;
    --text-primary: #101114;
    --text-secondary: #414956;
    --text-muted: #5f6670;
    --border-subtle: #dfe3e8;
    --border-strong: #c5ccd6;
    --accent: #3f49bd;
    --accent-soft: rgba(63,73,189,0.12);
    --warning: #815100;
    --success: #10643f;
    --danger: #982f2f;
    --info: #245a8d;
  }
}

* {
  box-sizing: border-box;
}

html {
  background: var(--surface-base);
  color: var(--text-primary);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-block-size: 100dvb;
  background:
    radial-gradient(circle at 70% -10%, var(--accent-soft), transparent 34rem),
    linear-gradient(180deg, var(--surface-base), var(--surface-base));
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
  overflow-wrap: anywhere;
}

a:hover {
  color: var(--text-primary);
}

code,
kbd {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--surface-recessed);
  color: var(--text-primary);
  font-family: "JetBrains Mono", "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  overflow-wrap: anywhere;
  padding: 0.08rem 0.32rem;
  white-space: normal;
}

button,
input,
select {
  font: inherit;
}

button,
a.button {
  min-block-size: 44px;
}

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

.skip-link {
  position: fixed;
  inset-block-start: var(--space-3);
  inset-inline-start: var(--space-3);
  z-index: 30;
  transform: translateY(-200%);
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--surface-base);
  padding: var(--space-3) var(--space-4);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell {
  display: grid;
  grid-template-columns: 20rem minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  min-block-size: 100dvb;
  max-block-size: 100dvb;
}

.site-sidebar {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  min-block-size: 0;
  overflow: auto;
  border-inline-end: 1px solid var(--border-subtle);
  background: color-mix(in srgb, var(--surface-panel) 94%, transparent);
  padding: var(--space-6) var(--space-4);
}

.site-main {
  min-inline-size: 0;
  min-block-size: 0;
  overflow: auto;
  padding: 0 clamp(var(--space-4), 4vw, var(--space-10)) var(--space-10);
}

.mobile-header,
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.mobile-header {
  display: none;
}

.topbar {
  position: sticky;
  inset-block-start: 0;
  z-index: 10;
  margin-inline: calc(clamp(var(--space-4), 4vw, var(--space-10)) * -1);
  border-block-end: 1px solid var(--border-subtle);
  background: color-mix(in srgb, var(--surface-base) 88%, transparent);
  padding: var(--space-3) clamp(var(--space-4), 4vw, var(--space-10));
  backdrop-filter: blur(16px);
}

.topbar-copy {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.brand {
  display: grid;
  gap: var(--space-1);
  margin-block-end: var(--space-6);
}

.brand a,
.mobile-brand {
  color: var(--text-primary);
  font-size: 1.15rem;
  font-weight: 620;
}

.brand span {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.sidebar-search {
  display: grid;
  gap: var(--space-2);
  margin-block-end: var(--space-6);
}

.sidebar-search label,
.search-panel label {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 620;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

input[type="search"] {
  inline-size: 100%;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  color: var(--text-primary);
  padding: var(--space-3) var(--space-4);
}

.nav-group {
  display: grid;
  gap: var(--space-1);
  align-content: start;
}

.nav-group.compact {
  margin-block-start: var(--space-6);
}

.nav-group p,
.eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 620;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-group a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.92rem;
  padding: 0.48rem 0.68rem;
  transition: background-color 150ms ease, color 150ms ease;
}

.nav-group a:hover,
.nav-group a.is-active {
  background: var(--accent-soft);
  color: var(--text-primary);
}

.nav-group a span {
  color: var(--text-muted);
  font-family: "JetBrains Mono", "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.75rem;
}

.theme-control {
  display: inline-flex;
  gap: 2px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  padding: 2px;
}

.theme-control button,
.icon-button {
  border: 0;
  border-radius: calc(var(--radius-md) - 2px);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.42rem 0.62rem;
  transition: background-color 150ms ease, color 150ms ease, transform 120ms ease;
}

.theme-control button[aria-pressed="true"],
.theme-control button:hover,
.icon-button:hover {
  background: var(--accent-soft);
  color: var(--text-primary);
}

.theme-control button:active,
.button:active,
.icon-button:active {
  transform: scale(0.98);
}

.page-head,
.hero {
  max-inline-size: 76ch;
  padding-block: clamp(var(--space-8), 8vw, 6rem) var(--space-8);
}

.hero {
  max-inline-size: 920px;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--text-primary);
  letter-spacing: -0.018em;
}

h1 {
  font-size: clamp(2.4rem, 6vw, 5.25rem);
  font-weight: 520;
  line-height: 0.98;
}

.page-head h1 {
  font-size: clamp(2rem, 4vw, 3.4rem);
}

h2 {
  font-size: 1.5rem;
  line-height: 1.2;
}

h3 {
  font-size: 1rem;
  font-weight: 620;
  line-height: 1.35;
}

.lede {
  margin: var(--space-5) 0 0;
  color: var(--text-secondary);
  font-size: clamp(1.08rem, 2vw, 1.25rem);
  max-inline-size: 68ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-block: var(--space-6);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-5);
  font-weight: 560;
}

.button.primary {
  background: var(--accent);
  color: var(--surface-base);
}

.button.ghost {
  border: 1px solid var(--border-strong);
  background: var(--surface-soft);
  color: var(--text-primary);
}

.stat-grid,
.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(12rem, 100%), 1fr));
  gap: var(--space-3);
}

.stat-grid {
  margin: var(--space-8) 0 0;
}

.stat-grid div,
.fact {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  padding: var(--space-4);
}

dt {
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

dd {
  margin: var(--space-1) 0 0;
  color: var(--text-primary);
  overflow-wrap: anywhere;
}

.split-panel,
.card-grid,
.form-grid,
.diagnostic-grid,
.evidence-ledger {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(22rem, 100%), 1fr));
  gap: var(--space-4);
  margin-block: var(--space-8);
}

.feature-card,
.form-card,
.record-card,
.diagnostic-card,
.evidence-card,
.search-panel,
.root-port-diagram {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface-elevated) 94%, transparent);
}

.feature-card,
.diagnostic-card,
.evidence-card,
.search-panel {
  padding: var(--space-6);
}

.feature-card p,
.diagnostic-card p,
.evidence-card p {
  color: var(--text-secondary);
}

.form-card {
  padding: var(--space-4);
}

.form-card a {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--text-primary);
  font-weight: 560;
}

.form-card p,
.mini-count {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.manual-category {
  margin-block: var(--space-10);
}

.manual-category h2 {
  margin-block-end: var(--space-4);
}

.records-section {
  display: grid;
  gap: var(--space-4);
  min-inline-size: 0;
  margin-block-end: var(--space-10);
}

.record-card {
  min-inline-size: 0;
  padding: var(--space-5);
  scroll-margin-block-start: var(--space-8);
}

.record-card:target {
  background: color-mix(in srgb, var(--accent-soft) 28%, var(--surface-elevated));
}

.record-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: var(--space-4);
}

.record-summary {
  color: var(--text-secondary);
  overflow-wrap: anywhere;
}

.record-head > div,
.details p,
.facts dd,
.test-facts dd,
th,
td {
  min-inline-size: 0;
  overflow-wrap: anywhere;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.75rem;
  font-weight: 620;
  line-height: 1;
  padding: 0.36rem 0.55rem;
}

.badge-verified {
  background: color-mix(in srgb, var(--success) 18%, transparent);
}

.badge-try {
  background: color-mix(in srgb, var(--warning) 18%, transparent);
}

.badge-firmware,
.badge-link {
  background: var(--accent-soft);
}

.badge-record {
  background: var(--surface-soft);
}

.details summary {
  cursor: pointer;
  color: var(--text-primary);
  font-weight: 560;
}

.record-block {
  min-inline-size: 0;
  margin-block-start: var(--space-4);
}

.table-scroll {
  max-inline-size: 100%;
  min-inline-size: 0;
  overflow-x: auto;
  margin-block-start: var(--space-4);
}

table {
  inline-size: 100%;
  border-collapse: collapse;
  min-inline-size: 32rem;
}

th,
td {
  border-block-end: 1px solid var(--border-subtle);
  padding: var(--space-3);
  text-align: start;
  vertical-align: top;
}

th {
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.permalink {
  margin-block-end: 0;
}

.root-port-diagram {
  padding: var(--space-4);
}

.root-port-diagram svg {
  inline-size: 100%;
  block-size: auto;
}

.node {
  fill: var(--surface-soft);
  stroke: var(--border-strong);
}

.node-cpu {
  fill: var(--accent-soft);
}

.node-risk {
  fill: color-mix(in srgb, var(--warning) 12%, var(--surface-soft));
}

.trace {
  fill: none;
  stroke-width: 4;
  stroke-linecap: round;
}

.trace-good {
  stroke: var(--success);
}

.trace-risk {
  stroke: var(--warning);
}

.trace-dashed {
  stroke-dasharray: 10 10;
}

.svg-label {
  fill: var(--text-primary);
  font-size: 18px;
  font-weight: 620;
}

.svg-small {
  fill: var(--text-muted);
  font-size: 14px;
}

figcaption {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.check-list li {
  margin-block: var(--space-2);
}

.callout {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  color: var(--text-secondary);
  padding: var(--space-4);
}

.search-results {
  display: grid;
  gap: var(--space-3);
  margin-block-start: var(--space-4);
}

.search-result {
  display: grid;
  gap: var(--space-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  padding: var(--space-4);
}

.search-result strong {
  color: var(--text-primary);
}

.result-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.global-results {
  display: grid;
  gap: var(--space-2);
  margin-block-start: var(--space-3);
}

.global-results a {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  color: var(--text-secondary);
  font-size: 0.88rem;
  padding: var(--space-3);
}

.breadcrumbs {
  margin-block-end: var(--space-5);
  color: var(--text-muted);
  font-size: 0.9rem;
}

@media (max-width: 920px) {
  body {
    font-size: 17px;
  }

  .site-shell {
    display: block;
    max-block-size: none;
    min-block-size: 100dvb;
  }

  .mobile-header {
    position: sticky;
    inset-block-start: 0;
    z-index: 20;
    display: flex;
    border-block-end: 1px solid var(--border-subtle);
    background: color-mix(in srgb, var(--surface-panel) 92%, transparent);
    padding: var(--space-3) var(--space-4);
    backdrop-filter: blur(16px);
  }

  .mobile-header .theme-control {
    display: none;
  }

  .site-sidebar {
    display: none;
    max-block-size: calc(100dvb - 68px);
    border-block-end: 1px solid var(--border-subtle);
    border-inline-end: 0;
  }

  body.nav-open .site-sidebar {
    display: grid;
  }

  .site-main {
    overflow: visible;
    padding: 0 var(--space-4) var(--space-8);
  }

  .topbar {
    position: static;
    margin-inline: calc(var(--space-4) * -1);
    padding-inline: var(--space-4);
  }

  .topbar-copy {
    display: none;
  }

  h1 {
    font-size: clamp(2.2rem, 14vw, 3.4rem);
  }

  .record-head {
    display: grid;
  }

  .record-card {
    scroll-margin-block-start: 5.5rem;
  }
}

@media (min-width: 921px) {
  body {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto;
    transition-duration: 0.001ms;
    animation-duration: 0.001ms;
  }
}

@media print {
  body {
    background: #ffffff;
    color: #000000;
  }

  .site-shell {
    display: block;
    max-block-size: none;
  }

  .site-sidebar,
  .mobile-header,
  .topbar,
  .hero-actions,
  .theme-control,
  .sidebar-search {
    display: none;
  }

  .site-main {
    overflow: visible;
    padding: 0;
  }

  .record-card,
  .feature-card,
  .diagnostic-card,
  .evidence-card {
    break-inside: avoid;
    border-color: #cccccc;
  }
}