/* Gauge documentation site.
   Flat ink and paper palette in two themes. No gradients anywhere.
   Dark is the default; [data-theme="light"] on <html> switches the tokens. */

:root {
  color-scheme: dark;
  --void: #080b10;
  --deck: #0d131a;
  --panel: #121a23;
  --panel-2: #16202a;
  --line: #24313d;
  --line-strong: #3a4c5e;
  --bone: #e9e6dd;
  --mute: #93a2b2;
  --micro: #7a8fa1;
  --amber: #f2b33d;
  --amber-deep: #c98a12;
  --on-accent: #101720;
  --accent-block: #f2b33d;
  --paper: #ede8da;
  --paper-line: #c7bfa9;
  --ink: #101720;
  --ink-mute: #5a6570;
  --ink-warn: #8a5200;
  --ink-high: #a3320f;
  --ink-pass: #1d6b58;
  --teal: #69c9b0;
  --sig-high: #ff9b91;
  --sig-high-line: #6b312c;
  --sig-warn-line: #6b5326;
  --sig-pass-line: #2f5c50;
  --font-sans: "Archivo", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-serif: Georgia, "Times New Roman", serif;
  --sidebar: 284px;
  --content: 840px;
  --topbar: 64px;
}

/* Light: the same ink and paper identity read the other way round, a dark
   ink sheet on a pale desk. Accent values darken so every text pair keeps at
   least 4.5:1; the block shadow stays bright amber so the signature holds. */

:root[data-theme="light"] {
  color-scheme: light;
  --void: #f2f0e9;
  --deck: #e8e5db;
  --panel: #fbfaf5;
  --panel-2: #f6f4ec;
  --line: #d5cebc;
  --line-strong: #8a8069;
  --bone: #131a22;
  --mute: #54616f;
  --micro: #5a6672;
  --amber: #8a5a06;
  --amber-deep: #6d4703;
  --on-accent: #ffffff;
  --accent-block: #f2b33d;
  --paper: #ffffff;
  --paper-line: #c9c2ae;
  --ink: #101720;
  --ink-mute: #55606b;
  --ink-warn: #7d4a00;
  --ink-high: #9a2c0b;
  --ink-pass: #155c4a;
  --teal: #0f6d55;
  --sig-high: #b3261e;
  --sig-high-line: #e2b7b1;
  --sig-warn-line: #e0cb96;
  --sig-pass-line: #a8d2c4;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--void);
  color: var(--bone);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--amber);
  color: var(--on-accent);
}

a {
  color: var(--amber);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

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

img,
svg {
  max-width: 100%;
}

code,
kbd,
samp,
pre {
  font-family: var(--font-mono);
}

/* A long inline token (an install command, a URL) otherwise sets a floor under
   the paragraph width and pushes the page past a 320px viewport. Block code
   keeps its own horizontal scroll. */
p code,
li code,
dd code {
  overflow-wrap: anywhere;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--amber);
  color: var(--on-accent);
  font: 600 12px/1 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.skip-link:focus {
  top: 12px;
}

.site {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  grid-template-rows: var(--topbar) 1fr;
  min-height: 100vh;
}

/* Top bar */

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 20px;
  height: var(--topbar);
  padding: 0 24px;
  background: var(--deck);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--bone);
  font: 600 14px/1 var(--font-mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 9px;
  height: 18px;
  background: var(--amber);
}

.brand-sub {
  padding-left: 12px;
  border-left: 1px solid var(--line-strong);
  color: var(--mute);
  font: 500 10px/1 var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
}

.status-pill,
.version-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 9px;
  border: 1px solid var(--line-strong);
  color: var(--mute);
  font: 500 10px/1 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

.status-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--amber);
}

.icon-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border: 1px solid var(--line-strong);
  color: var(--bone);
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.06em;
}

.icon-link:hover {
  border-color: var(--amber);
  color: var(--amber);
  text-decoration: none;
}

.icon-link svg {
  width: 14px;
  height: 14px;
}

/* Theme toggle. The icon and label name the mode the click gives you: a sun and
   "Light" while the page is dark. It stays hidden until the head script marks
   the document ready, because an inert toggle is worse than no toggle. */

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--bone);
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.06em;
  white-space: nowrap;
  cursor: pointer;
}

.theme-toggle:hover {
  border-color: var(--amber);
  color: var(--amber);
  text-decoration: none;
}

.theme-toggle svg {
  width: 14px;
  height: 14px;
}

.theme-toggle .icon-moon {
  display: none;
}

:root[data-theme="light"] .theme-toggle .icon-sun {
  display: none;
}

:root[data-theme="light"] .theme-toggle .icon-moon {
  display: inline;
}

html:not([data-theme-ready]) .theme-toggle {
  display: none;
}

/* Sidebar */

.sidebar {
  position: sticky;
  top: var(--topbar);
  align-self: start;
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--topbar));
  overflow-y: auto;
  padding: 32px 22px 28px;
  background: var(--deck);
  border-right: 1px solid var(--line);
}

.side-label {
  margin: 0 0 14px 12px;
  color: var(--mute);
  font: 500 10px/1 var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.side-nav a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  color: var(--mute);
  font-size: 14px;
  line-height: 1.3;
}

.side-nav a:hover {
  background: var(--panel);
  color: var(--bone);
  text-decoration: none;
}

.side-nav a[aria-current="page"] {
  border-left-color: var(--amber);
  background: var(--panel);
  color: var(--bone);
  font-weight: 500;
}

.side-nav a span {
  /* 9px mono, so it needs the same 4.5:1 as body text. --line-strong reads as
     a hairline on a dark surface (2.2:1) and fails as type. */
  color: var(--micro);
  font: 500 9px/1 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.side-nav a[aria-current="page"] span {
  color: var(--amber);
}

.side-meta {
  margin-top: auto;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  color: var(--mute);
  font: 400 11px/1.7 var(--font-mono);
}

.side-meta p {
  margin: 0 0 10px;
}

.side-meta a {
  display: block;
  color: var(--mute);
  padding: 2px 0;
}

.side-meta a:hover {
  color: var(--amber);
}

/* Main content */

.main {
  min-width: 0;
  padding: 52px clamp(22px, 4vw, 56px) 72px;
}

.content {
  width: 100%;
  max-width: var(--content);
  margin: 0 auto;
}

body[data-page="overview"] .content {
  max-width: 1200px;
}

body[data-page="overview"] h1 {
  font-size: clamp(36px, 4vw, 54px);
  line-height: 1.06;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--amber);
  font: 500 11px/1.3 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  flex: none;
  width: 20px;
  height: 1px;
  background: var(--amber);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h1 {
  margin-bottom: 22px;
  font-size: clamp(38px, 4.6vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 800;
}

h1 em {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.025em;
  color: var(--amber);
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(25px, 2.6vw, 36px);
  line-height: 1.12;
}

h3 {
  margin-bottom: 10px;
  font-size: 19px;
  line-height: 1.25;
}

h4 {
  margin-bottom: 6px;
  font-size: 15px;
  line-height: 1.3;
}

p {
  margin: 0 0 16px;
}

p:last-child {
  margin-bottom: 0;
}

.lede {
  max-width: 62ch;
  color: var(--mute);
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.6;
}

.mono {
  font-family: var(--font-mono);
}

.muted {
  color: var(--mute);
}

.small {
  font-size: 13px;
}

hr {
  height: 0;
  margin: 0;
  border: 0;
  border-top: 1px solid var(--line);
}

/* Hero */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 4vw, 48px);
  align-items: center;
  padding: 12px 0 48px;
}

.hero-copy .lede {
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border: 1px solid var(--amber);
  background: var(--amber);
  color: var(--on-accent);
  font: 600 12px/1 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.button:hover {
  background: var(--amber-deep);
  border-color: var(--amber-deep);
  text-decoration: none;
}

.button--ghost {
  background: transparent;
  color: var(--bone);
  border-color: var(--line-strong);
}

.button--ghost:hover {
  background: var(--panel);
  border-color: var(--amber);
  color: var(--amber);
}

.button svg {
  width: 14px;
  height: 14px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--mute);
  font: 400 11px/1.5 var(--font-mono);
}

.hero-meta li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-meta li::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--teal);
}

/* Report card, the signature element */

.report {
  position: relative;
  margin: 0;
  border: 1px solid var(--paper-line);
  background: var(--paper);
  color: var(--ink);
  box-shadow: 10px 10px 0 var(--accent-block);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.75;
}

.report-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--paper-line);
  color: var(--ink-mute);
  font: 500 10px/1.2 var(--font-mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.report-title {
  color: var(--ink);
  letter-spacing: 0.16em;
}

.report-body {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.report-line {
  display: block;
}

.report-line--dim {
  color: var(--ink-mute);
}

.report-line--warn {
  color: var(--ink-warn);
  font-weight: 500;
}

.report-line--high {
  color: var(--ink-high);
  font-weight: 500;
}

.report-line--pass {
  color: var(--ink-pass);
  font-weight: 500;
}

.stamp {
  position: absolute;
  right: 14px;
  bottom: -14px;
  padding: 4px 9px;
  border: 2px solid var(--ink-high);
  background: var(--paper);
  color: var(--ink-high);
  font: 600 10px/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transform: rotate(-2deg);
}

.caret {
  display: inline-block;
  width: 7px;
  height: 13px;
  margin-left: 2px;
  background: var(--ink);
  vertical-align: -2px;
}

@media (prefers-reduced-motion: no-preference) {
  .report-line {
    opacity: 0;
    animation: ledger-in 0.34s ease-out forwards;
    animation-delay: calc(var(--i, 0) * 80ms + 120ms);
  }

  .caret {
    animation: blink 1.1s steps(1, end) infinite;
  }
}

@keyframes ledger-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* Exit code rail */

.rail {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 36px 0 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.rail-item {
  padding: 18px 18px 20px;
  border-right: 1px solid var(--line);
}

.rail-item:last-child {
  border-right: 0;
}

.rail-code {
  display: block;
  margin-bottom: 4px;
  color: var(--mute);
  font: 600 26px/1 var(--font-mono);
}

.rail-item:first-child .rail-code {
  color: var(--teal);
}

.rail-item:nth-child(2) .rail-code {
  color: var(--amber);
}

.rail-label {
  display: block;
  margin-bottom: 6px;
  color: var(--bone);
  font: 500 11px/1.3 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.rail-copy {
  margin: 0;
  color: var(--mute);
  font-size: 13px;
  line-height: 1.5;
}

/* Sections */

.section {
  padding: 54px 0;
  border-bottom: 1px solid var(--line);
}

.section:last-of-type {
  border-bottom: 0;
  padding-bottom: 24px;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 32px;
  margin-bottom: 30px;
}

.section-head > * {
  margin-bottom: 0;
}

.section-head p {
  max-width: 54ch;
  color: var(--mute);
  font-size: 15px;
}

/* Comparison flow */

.flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 14px;
  align-items: stretch;
}

.flow-card {
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.flow-card h3 {
  margin-bottom: 8px;
  font: 600 12px/1.3 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
}

.flow-card p {
  color: var(--mute);
  font-size: 14px;
  line-height: 1.55;
}

.flow-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  font: 400 12px/1.8 var(--font-mono);
  color: var(--bone);
}

.flow-list li::before {
  content: "  ";
  white-space: pre;
}

.flow-op {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 4px;
  color: var(--mute);
  font: 500 10px/1.2 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: center;
}

.flow-op::before,
.flow-op::after {
  content: "";
  width: 1px;
  flex: 1;
  background: var(--line-strong);
}

.flow-op span {
  padding: 6px 8px;
  border: 1px solid var(--line-strong);
  color: var(--amber);
  white-space: nowrap;
}

/* Ledger list */

.ledger {
  margin: 0;
  border-top: 1px solid var(--line);
}

.ledger-row {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.ledger-row dt {
  margin: 0;
  color: var(--amber);
  font: 500 11px/1.5 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.ledger-row dd {
  margin: 0;
  color: var(--mute);
  font-size: 15px;
  line-height: 1.6;
}

.ledger-row dd strong {
  color: var(--bone);
  font-weight: 600;
}

/* Cards */

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.card {
  padding: 20px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.card h3 {
  font-size: 17px;
}

.card p {
  color: var(--mute);
  font-size: 14px;
  line-height: 1.6;
}

.card .chip {
  margin-bottom: 12px;
}

/* Chips */

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 7px;
  border: 1px solid var(--line-strong);
  color: var(--mute);
  font: 500 10px/1.4 var(--font-mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  white-space: nowrap;
}

.chip--live {
  border-color: var(--amber);
  color: var(--amber);
}

.chip--high {
  border-color: var(--sig-high-line);
  color: var(--sig-high);
}

.chip--warn {
  border-color: var(--sig-warn-line);
  color: var(--amber);
}

.chip--pass {
  border-color: var(--sig-pass-line);
  color: var(--teal);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

/* Tables */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
}

table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14px;
}

th {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  color: var(--mute);
  font: 500 10px/1.4 var(--font-mono);
  letter-spacing: 0.11em;
  text-align: left;
  text-transform: uppercase;
  white-space: nowrap;
}

td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--mute);
  vertical-align: top;
  line-height: 1.5;
}

tr:last-child td {
  border-bottom: 0;
}

td:first-child {
  color: var(--bone);
  font-family: var(--font-mono);
  font-size: 12.5px;
  white-space: nowrap;
}

td strong {
  color: var(--bone);
  font-weight: 500;
}

.table-caption {
  margin: 10px 0 0;
  color: var(--mute);
  font: 400 11px/1.6 var(--font-mono);
}

.rule-table td:nth-child(2) {
  color: var(--bone);
  font-family: var(--font-mono);
  font-size: 12px;
  white-space: nowrap;
}

/* Rule details */

.rule {
  margin-bottom: 14px;
  padding: 22px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.rule-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: 14px;
}

.rule-head h3 {
  margin: 0;
  color: var(--amber);
  font: 600 15px/1.3 var(--font-mono);
  letter-spacing: 0;
}

.rule p {
  max-width: 70ch;
  color: var(--mute);
  font-size: 14.5px;
}

.rule dl {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 8px 18px;
  margin: 16px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
}

.rule dt {
  color: var(--mute);
  font: 500 10px/1.6 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.rule dd {
  margin: 0;
  color: var(--bone);
}

.rule dd code {
  color: var(--amber);
  font-size: 12.5px;
}

/* Code blocks */

.code {
  position: relative;
  margin: 0 0 18px;
  border: 1px solid var(--line);
  background: var(--deck);
}

.code:last-child {
  margin-bottom: 0;
}

.code-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--mute);
  font: 500 10px/1.3 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.code pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  color: var(--bone);
  font-size: 12.5px;
  line-height: 1.75;
  tab-size: 2;
}

.code--paper {
  border-color: var(--paper-line);
  background: var(--paper);
}

.code--paper .code-label {
  border-bottom-color: var(--paper-line);
  color: var(--ink-mute);
}

.code--paper pre {
  color: var(--ink);
}

.code--paper .c {
  color: var(--ink-mute);
}

.copy {
  padding: 4px 8px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--mute);
  font: 500 10px/1.2 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.copy:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.code--paper .copy {
  border-color: var(--paper-line);
  color: var(--ink-mute);
}

.code--paper .copy:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.copy[data-copied="true"] {
  border-color: var(--teal);
  color: var(--teal);
}

/* Callouts and quotes */

.note {
  margin: 24px 0;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--amber);
  background: var(--panel);
  color: var(--mute);
  font-size: 14.5px;
  line-height: 1.6;
}

.note strong {
  color: var(--bone);
}

.note p:last-child {
  margin-bottom: 0;
}

.limits {
  margin: 40px 0 32px;
  padding: 6px 0 6px 26px;
  border-left: 3px solid var(--amber);
  color: var(--bone);
  font: italic 400 clamp(20px, 2.2vw, 28px) / 1.45 var(--font-serif);
}

.limits cite {
  display: block;
  margin-top: 14px;
  color: var(--mute);
  font: 500 10px/1.5 var(--font-mono);
  font-style: normal;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Status list */

.status-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.status-list li {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}

.status-list b {
  color: var(--mute);
  font: 500 10px/1.7 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.status-list span {
  color: var(--bone);
}

ol.status-list {
  counter-reset: step;
}

ol.status-list li {
  counter-increment: step;
}

ol.status-list b::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  margin-bottom: 3px;
  color: var(--amber);
  letter-spacing: 0.14em;
}

/* Footer */

.footer {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px 40px;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--mute);
  font-size: 12.5px;
  line-height: 1.7;
}

.footer p {
  margin: 0;
  max-width: 52ch;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.footer-links a {
  color: var(--mute);
}

.footer-links a:hover {
  color: var(--amber);
}

/* 404 */

.not-found {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 52vh;
}

.not-found-code {
  margin: 0 0 8px;
  color: var(--amber);
  font: 600 clamp(80px, 16vw, 180px) / 0.9 var(--font-mono);
  letter-spacing: -0.05em;
}

/* Responsive */

@media (max-width: 1120px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: start;
  }

  .report {
    max-width: 620px;
  }
}

@media (max-width: 900px) {
  .site {
    grid-template-columns: 1fr;
    grid-template-rows: var(--topbar) auto 1fr;
  }

  .site > * {
    min-width: 0;
  }

  .sidebar {
    position: static;
    height: auto;
    overflow: visible;
    padding: 14px 18px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .side-label,
  .side-meta {
    display: none;
  }

  .side-nav {
    flex-direction: row;
    gap: 4px;
    overflow-x: auto;
    scrollbar-width: thin;
  }

  .side-nav a {
    flex: none;
    padding: 10px 12px;
    border-left: 0;
    border-bottom: 2px solid transparent;
    font-size: 13px;
    white-space: nowrap;
  }

  .side-nav a[aria-current="page"] {
    border-left-color: transparent;
    border-bottom-color: var(--amber);
  }

  .side-nav a span {
    display: none;
  }

  .main {
    padding: 36px 22px 56px;
  }

  .brand-sub {
    display: none;
  }
}

@media (max-width: 700px) {
  .status-pill {
    display: none;
  }

  .rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rail-item:nth-child(2) {
    border-right: 0;
  }

  .rail-item:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .flow {
    grid-template-columns: 1fr;
  }

  .flow-op {
    flex-direction: row;
    padding: 4px 0;
  }

  .flow-op::before,
  .flow-op::after {
    width: 100%;
    height: 1px;
    flex: 1;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .ledger-row,
  .status-list li,
  .rule dl {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .section {
    padding: 40px 0;
  }

  .table-wrap::after {
    content: "Swipe to see every column";
    display: block;
    padding: 8px 12px;
    border-top: 1px solid var(--line);
    color: var(--mute);
    font: 400 10px/1.4 var(--font-mono);
    letter-spacing: 0.06em;
  }

  /* Keep the row label in view while the rest of the table is swiped. */
  .table-wrap:not(.table-wrap--cards) th:first-child,
  .table-wrap:not(.table-wrap--cards) td:first-child {
    position: sticky;
    left: 0;
    z-index: 1;
    box-shadow: 1px 0 0 var(--line);
  }

  .table-wrap:not(.table-wrap--cards) td:first-child {
    background: var(--void);
  }

  .table-wrap--cards {
    overflow: visible;
    border: 0;
  }

  .table-wrap--cards::after {
    display: none;
  }

  .rule-table {
    display: block;
    min-width: 0;
  }

  .rule-table thead {
    display: none;
  }

  .rule-table tbody {
    display: block;
  }

  .rule-table tr {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 4px 10px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .rule-table td {
    display: block;
    padding: 0;
    border: 0;
  }

  .rule-table td:nth-child(1) {
    grid-column: 1 / -1;
    grid-row: 1;
    color: var(--mute);
    font: 500 10px/1.5 var(--font-mono);
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .rule-table td:nth-child(2) {
    grid-column: 1;
    grid-row: 2;
    align-self: center;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .rule-table td:nth-child(3) {
    grid-column: 1 / -1;
    grid-row: 3;
    font-size: 13.5px;
  }

  .rule-table td:nth-child(4) {
    grid-column: 2;
    grid-row: 2;
    align-self: center;
    white-space: normal;
  }

  .rule-table td:nth-child(5) {
    grid-column: 3;
    grid-row: 2;
    align-self: center;
  }

  .report {
    font-size: 11px;
    box-shadow: 6px 6px 0 var(--accent-block);
  }

  .stamp {
    right: 10px;
  }
}

@media (max-width: 480px) {
  .topbar {
    padding: 0 14px;
    gap: 12px;
  }

  .version-pill {
    display: none;
  }

  .brand {
    font-size: 12px;
    letter-spacing: 0.16em;
  }

  .icon-link span {
    display: none;
  }

  .icon-link {
    padding: 8px;
  }

  .theme-toggle span {
    display: none;
  }

  .theme-toggle {
    padding: 8px;
  }

  .main {
    padding: 28px 16px 48px;
  }

  .side-nav {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .footer {
    flex-direction: column;
  }
}

@media print {
  .topbar,
  .sidebar,
  .hero-actions,
  .copy {
    display: none;
  }

  .site {
    display: block;
  }

  /* Printing must not inherit whichever theme is on screen: backgrounds are
     dropped by the printer, so every text colour has to work on paper. */
  body,
  h1,
  h2,
  h3,
  h4,
  p,
  li,
  a,
  th,
  td,
  code,
  pre,
  .chip {
    background: transparent;
    color: #111;
  }

  .table-wrap,
  table,
  th,
  td {
    border-color: #999;
  }

  .report {
    box-shadow: none;
  }
}