/* fleet-router landing page. Signal-box mimic panel on the EOS Rio / Rio Blocks
   carbon ground: hairline seams, a 20px tile module, five lamp states. */

@font-face {
  font-family: "Inter";
  src: url("assets/fonts/inter.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("assets/fonts/jetbrains-mono.woff2") format("woff2");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

:root {
  --paper: #050505;
  --field: #0d0d0d;
  --inset: #121212;
  --rule: #1f1f1f;
  --rule-strong: #343434;
  --seam: rgba(255, 255, 255, 0.045);
  --ink: #f0f0f0;
  --ink-2: #b8b8b8;
  --ink-3: #8c8c8c;
  --accent: #14b8a6;
  --accent-ink: #04201c;
  --accent-wash: rgba(20, 184, 166, 0.12);
  --warn: #f59e0b;
  --warn-wash: rgba(245, 158, 11, 0.12);
  --track-dim: #4a4a4a;
  --lamp-off: #262626;
  --chip: rgba(255, 255, 255, 0.06);
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace;
  --radius: 4px;
  --gutter: 1rem;
  --mast: 4rem;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --paper: #f6f6f3;
  --field: #ecece7;
  --inset: #ffffff;
  --rule: #dcdcd6;
  --rule-strong: #bdbdb5;
  --seam: rgba(0, 0, 0, 0.055);
  --ink: #0a0a0a;
  --ink-2: #3d3d3d;
  --ink-3: #5c5c5c;
  --accent: #0f766e;
  --accent-ink: #ffffff;
  --accent-wash: rgba(15, 118, 110, 0.1);
  --warn: #b45309;
  --warn-wash: rgba(180, 83, 9, 0.1);
  --track-dim: #b4b4ad;
  --lamp-off: #d6d6d0;
  --chip: rgba(0, 0, 0, 0.05);
  color-scheme: light;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --paper: #f6f6f3;
    --field: #ecece7;
    --inset: #ffffff;
    --rule: #dcdcd6;
    --rule-strong: #bdbdb5;
    --seam: rgba(0, 0, 0, 0.055);
    --ink: #0a0a0a;
    --ink-2: #3d3d3d;
    --ink-3: #5c5c5c;
    --accent: #0f766e;
    --accent-ink: #ffffff;
    --accent-wash: rgba(15, 118, 110, 0.1);
    --warn: #b45309;
    --warn-wash: rgba(180, 83, 9, 0.1);
    --track-dim: #b4b4ad;
    --lamp-off: #d6d6d0;
    --chip: rgba(0, 0, 0, 0.05);
    color-scheme: light;
  }
}

/* ---------- base ---------- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--mast) + 1rem);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  font-feature-settings: "cv11";
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
p,
dl,
dd,
ol,
ul,
figure,
pre {
  margin: 0;
}

h1,
h2,
h3 {
  text-wrap: balance;
  font-weight: 700;
}

h1 {
  font-size: clamp(2rem, 1.25rem + 2.6vw, 3.25rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  line-height: 1.15;
  letter-spacing: -0.022em;
}

h3 {
  font-size: 1.0625rem;
  line-height: 1.3;
  letter-spacing: -0.012em;
  font-weight: 600;
}

p {
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration-color: var(--rule-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: text-decoration-color 160ms ease-out;
}

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

code,
pre {
  font-family: var(--mono);
  font-feature-settings: "zero", "tnum";
  font-variant-numeric: tabular-nums;
  font-variant-ligatures: none;
}

code {
  font-size: 0.875em;
}

p code,
dd code,
li code,
td code,
figcaption code {
  padding: 0.08em 0.3em;
  border-radius: 3px;
  background: var(--chip);
}

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

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

html {
  scrollbar-color: var(--rule-strong) var(--paper);
  scrollbar-width: thin;
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

.wrap {
  width: min(1200px, 100% - 2 * var(--gutter));
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip {
  position: absolute;
  top: 0;
  left: var(--gutter);
  z-index: 40;
  padding: 0.6rem 0.9rem;
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-120%);
}

.skip:focus {
  transform: translateY(0.5rem);
}

/* ---------- state keys ---------- */

.key {
  display: inline-block;
  width: 10px;
  height: 10px;
  flex: none;
  border: 1.5px solid var(--track-dim);
  background: transparent;
  vertical-align: -1px;
}

.key-set {
  border-color: var(--accent);
  background: var(--accent);
}

.key-failover {
  border-color: var(--warn);
  background: var(--warn);
}

.key-stale {
  border-color: var(--warn);
  background: transparent;
}

.key-offline {
  border-color: var(--rule-strong);
  background: var(--lamp-off);
}

.key-quarantine {
  border-color: var(--warn);
  background: repeating-linear-gradient(135deg, var(--warn) 0 2px, transparent 2px 4px);
}

.key-disabled {
  border-color: var(--rule-strong);
  background: transparent;
}

/* ---------- masthead ---------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}

.masthead-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: var(--mast);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  text-decoration: none;
}

.brand-name {
  font-size: 1.1875rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1;
}

.brand-mark {
  display: block;
}

.brand-mark-field {
  fill: var(--field);
  stroke: var(--rule-strong);
}

.brand-mark-dim {
  stroke: var(--track-dim);
}

.brand-mark-set {
  stroke: var(--accent);
}

.brand-mark-lamp {
  fill: var(--warn);
}

.brands,
.footer-brands {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--ink);
  text-decoration: none;
}

.brands-by {
  gap: 0.75rem;
  margin-left: -0.6rem;
  color: var(--ink-2);
}

.brands-by .logo-eosrio {
  width: 92px;
  height: 17px;
}

.brands-by .logo-rioblocks {
  width: 68px;
  height: 18px;
}

.footer-brands .brand-name {
  font-size: 1rem;
}

.logo {
  display: inline-block;
  background: currentColor;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-size: contain;
  mask-size: contain;
}

.logo-eosrio {
  width: 112px;
  height: 21px;
  -webkit-mask-image: url("assets/eosrio-textlogo.png");
  mask-image: url("assets/eosrio-textlogo.png");
}

.logo-rioblocks {
  width: 82px;
  height: 22px;
  -webkit-mask-image: url("assets/rioblocks-logo.svg");
  mask-image: url("assets/rioblocks-logo.svg");
}

.logo-sep {
  width: 1px;
  height: 22px;
  background: var(--rule-strong);
}

.nav {
  display: flex;
  gap: 0.25rem;
  margin-left: auto;
}

.nav a {
  padding: 0.4rem 0.65rem;
  color: var(--ink-2);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius);
  transition: color 160ms ease-out, background-color 160ms ease-out;
}

.nav a:hover {
  color: var(--ink);
  background: var(--chip);
}

.mast-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
  transition: color 160ms ease-out, border-color 160ms ease-out;
}

.theme-toggle:hover {
  color: var(--ink);
  border-color: var(--ink-3);
}

.theme-toggle svg {
  grid-area: 1 / 1;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.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: block;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .theme-toggle .icon-sun {
    display: none;
  }

  :root:not([data-theme="dark"]) .theme-toggle .icon-moon {
    display: block;
  }
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.5rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: border-color 160ms ease-out, background-color 160ms ease-out, color 160ms ease-out;
}

.button:hover {
  border-color: var(--ink-3);
  background: var(--chip);
}

/* ---------- hero + panel ---------- */

.hero {
  padding: 1.5rem 0 3rem;
}

.hero > .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.panel {
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background-color: var(--field);
  background-image:
    linear-gradient(var(--seam) 1px, transparent 1px),
    linear-gradient(90deg, var(--seam) 1px, transparent 1px);
  background-size: 20px 20px;
  background-position: -1px -1px;
  overflow: hidden;
}

.panel-plate {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 1rem;
  padding: 0.9rem 1.25rem 0;
  float: left;
}

.plate-name {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.plate-meta {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-3);
}

.plate-meta code {
  font-size: inherit;
  color: var(--ink-2);
}

.panel-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 1rem;
  padding: 0.95rem 1.25rem 0;
  margin: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-3);
}

.panel-legend li {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.panel-board {
  clear: both;
  padding: 1rem 1.25rem 0.5rem;
}

.panel-board svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.panel-board .board-p {
  display: none;
}

.panel-noscript {
  padding: 2rem 0;
  color: var(--ink-2);
  max-width: 60ch;
}

/* board drawing */

.board text {
  font-family: var(--sans);
  fill: var(--ink);
}

.board .t-name {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.board .t-junction {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.board .t-mono {
  font-family: var(--mono);
  font-size: 10.5px;
  fill: var(--ink-3);
  font-feature-settings: "zero", "tnum";
}

.board .t-label {
  font-family: var(--mono);
  font-size: 11px;
  fill: var(--ink-3);
  font-feature-settings: "zero", "tnum";
  transition: fill 300ms ease-out;
}

.board .t-label.is-set {
  fill: var(--accent);
}

.board .t-label.is-failed,
.board .t-label.is-diverted,
.board .t-label.is-stale,
.board .t-label.is-quarantined {
  fill: var(--warn);
}

.board .box {
  fill: var(--inset);
  stroke: var(--rule-strong);
  stroke-width: 1;
}

.board .box-junction {
  stroke: var(--ink-3);
}

.board .track {
  fill: none;
  stroke: var(--track-dim);
  stroke-width: 2;
  stroke-linejoin: round;
  transition: stroke 300ms ease-out, stroke-width 300ms ease-out, opacity 300ms ease-out;
}

.board .track.is-idle {
  opacity: 0.6;
}

.board .track.is-set {
  stroke: var(--accent);
  stroke-width: 3;
}

.board .track.is-diverted {
  stroke: var(--warn);
  stroke-width: 3;
}

.board .track.is-failed {
  stroke: var(--warn);
  stroke-dasharray: 2 5;
}

.board .track.is-stale {
  stroke: var(--track-dim);
  stroke-dasharray: 6 5;
}

.board-l .track.is-quarantined {
  stroke: url(#hatch-l);
  stroke-width: 4;
}

.board-p .track.is-quarantined {
  stroke: url(#hatch-p);
  stroke-width: 4;
}

.board .hatch rect {
  fill: var(--warn);
}

.board .tick {
  stroke: var(--rule-strong);
  stroke-width: 1;
}

.board .lamp {
  stroke-width: 1.5;
  transition: fill 300ms ease-out, stroke 300ms ease-out;
}

.board .lamp.is-online {
  fill: var(--accent);
  stroke: var(--accent);
}

.board .lamp.is-stale {
  fill: transparent;
  stroke: var(--warn);
}

.board .lamp.is-offline {
  fill: var(--lamp-off);
  stroke: var(--rule-strong);
}

.board-l .lamp.is-quarantined {
  fill: url(#hatch-l);
  stroke: var(--warn);
}

.board-p .lamp.is-quarantined {
  fill: url(#hatch-p);
  stroke: var(--warn);
}

.board .mark {
  stroke: var(--warn);
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0;
  transition: opacity 300ms ease-out;
}

.board .mark.is-on {
  opacity: 1;
}

.panel-rail {
  display: grid;
  gap: 0.75rem 2rem;
  padding: 0.75rem 1.25rem 1.25rem;
  border-top: 1px solid var(--rule);
  background: var(--paper);
}

.scenario {
  display: inline-flex;
  align-self: start;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

.scenario button {
  padding: 0.5rem 0.8rem;
  border: 0;
  border-right: 1px solid var(--rule-strong);
  background: transparent;
  color: var(--ink-2);
  font: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 160ms ease-out, color 160ms ease-out;
}

.scenario button:last-child {
  border-right: 0;
}

.scenario button:hover {
  color: var(--ink);
  background: var(--chip);
}

.scenario button[aria-selected="true"] {
  color: var(--ink);
  background: var(--accent-wash);
  box-shadow: inset 0 -2px 0 var(--accent);
}

.scenario button:focus-visible {
  outline-offset: -2px;
  border-radius: 0;
}

.panel-caption {
  color: var(--ink-2);
  font-size: 0.9375rem;
  line-height: 1.55;
  max-width: 68ch;
}

.tab-short {
  display: none;
}

.legend dt small {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.3rem;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--ink-3);
}

.legend dt small code {
  font-size: 0.8125rem;
  padding: 0;
  background: none;
}

.hero-copy {
  display: grid;
  gap: 1.5rem 3rem;
  padding-top: 2rem;
}

.lede {
  margin-top: 1rem;
  max-width: 62ch;
  color: var(--ink-2);
  font-size: 1.0625rem;
}

.hero-actions {
  align-self: end;
}

.hero-alt {
  margin-top: 0.75rem;
  color: var(--ink-3);
  font-size: 0.875rem;
}

/* ---------- commands + copy ---------- */

.cmd {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  min-width: 0;
  align-items: center;
  gap: 0.6rem;
  padding: 0.3rem 0.3rem 0.3rem 0.9rem;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--inset);
  font-family: var(--mono);
  font-size: 0.9rem;
}

.cmd-prompt {
  color: var(--accent);
  user-select: none;
}

.cmd code {
  font-size: inherit;
  overflow-x: auto;
  white-space: nowrap;
  padding: 0.35rem 0;
  scrollbar-width: none;
}

.copy {
  position: relative;
  min-width: 4.5rem;
  min-height: 2.1rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  background: var(--paper);
  color: var(--ink-2);
  font: inherit;
  font-family: var(--sans);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 160ms ease-out, border-color 160ms ease-out, background-color 160ms ease-out;
}

.copy:hover {
  color: var(--ink);
  border-color: var(--ink-3);
}

.copy-label {
  display: grid;
}

.copy-label span {
  grid-area: 1 / 1;
  visibility: hidden;
}

.copy[data-state="idle"] .copy-label span:nth-child(1),
.copy:not([data-state]) .copy-label span:nth-child(1) {
  visibility: visible;
}

.copy[data-state="done"] {
  color: var(--accent);
  border-color: var(--accent);
}

.copy[data-state="done"] .copy-label span:nth-child(2) {
  visibility: visible;
}

.copy[data-state="failed"] {
  color: var(--warn);
  border-color: var(--warn);
}

.copy[data-state="failed"] .copy-label span:nth-child(3) {
  visibility: visible;
}

/* ---------- sections ---------- */

.section {
  padding: 3.5rem 0 0.5rem;
}

.section + .section {
  padding-top: 4rem;
}

main > .section:last-child {
  padding-bottom: 4rem;
}

.section-head {
  display: grid;
  gap: 0.6rem;
  max-width: 64ch;
  padding-top: 1.25rem;
  margin-bottom: 1.75rem;
  border-top: 1px solid var(--rule-strong);
}

.section-head p {
  color: var(--ink-2);
}

.sub-title {
  margin: 2.5rem 0 0.9rem;
}

/* steps */

.steps {
  display: grid;
  gap: 1.5rem 2rem;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.steps li {
  position: relative;
  padding-top: 1rem;
  border-top: 2px solid var(--track-dim);
}

.steps li::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border: 1.5px solid var(--accent);
}

.steps li:nth-child(3)::before {
  background: var(--warn);
  border-color: var(--warn);
}

.steps li:nth-child(3) {
  border-top-color: var(--warn);
}

.steps li:nth-child(4)::before {
  background: transparent;
  border-color: var(--accent);
}

.steps p {
  margin-top: 0.4rem;
  color: var(--ink-2);
  font-size: 0.9375rem;
}

.bound {
  display: grid;
  gap: 0.4rem 2rem;
  margin-top: 2.5rem;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--rule);
}

.bound p {
  color: var(--ink-2);
  font-size: 0.9375rem;
  max-width: 78ch;
}

/* legend list */

.legend div {
  display: grid;
  gap: 0.25rem 2rem;
  padding: 1rem 0;
  border-top: 1px solid var(--rule);
}

.legend div:last-child {
  border-bottom: 1px solid var(--rule);
}

.legend dt {
  font-weight: 600;
  letter-spacing: -0.01em;
}

.legend dd {
  color: var(--ink-2);
  font-size: 0.9375rem;
  max-width: 70ch;
}

/* install */

.install-row {
  display: grid;
  gap: 0.75rem 2rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--rule);
  align-items: center;
}

.install-row:last-child {
  border-bottom: 1px solid var(--rule);
}

.install-what p {
  margin-top: 0.3rem;
  color: var(--ink-2);
  font-size: 0.9375rem;
}

.targets {
  display: grid;
  gap: 0.4rem 1.5rem;
  padding: 0;
  list-style: none;
}

.targets li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: 0.9rem;
}

.targets li:last-child {
  border-bottom: 0;
}

.targets span {
  color: var(--ink-3);
  white-space: nowrap;
}

.terminal {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  list-style: none;
  counter-reset: term;
}

.terminal li {
  display: grid;
  gap: 0.3rem;
}

.term-note {
  color: var(--ink-3);
  font-size: 0.8125rem;
}

.term-note::before {
  counter-increment: term;
  content: counter(term) ". ";
  font-family: var(--mono);
  color: var(--ink-2);
}

.notice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  margin-top: 2rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--warn);
  border-radius: var(--radius);
  background: var(--warn-wash);
  color: var(--ink-2);
  font-size: 0.9375rem;
}

.notice .key {
  margin-top: 0.45rem;
}

.notice strong {
  color: var(--ink);
}

/* config */

.config {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem 2.5rem;
  align-items: start;
}

.config > *,
.metrics > *,
.install-row > *,
.terminal li > *,
.hero-copy > *,
.panel-rail > * {
  min-width: 0;
}

.codeblock {
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--inset);
  overflow: hidden;
}

.codeblock-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.35rem 0.35rem 0.35rem 0.9rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-3);
}

pre {
  padding: 0.9rem 1rem 1rem;
  overflow-x: auto;
  color: var(--ink);
  font-size: 0.8125rem;
  line-height: 1.6;
  tab-size: 2;
}

pre code {
  font-size: inherit;
}

.config-notes div {
  display: grid;
  gap: 0.15rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--rule);
}

.config-notes div:last-child {
  border-bottom: 1px solid var(--rule);
}

.config-notes dt {
  font-weight: 600;
  font-size: 0.9375rem;
}

.config-notes dt code {
  font-size: 0.875rem;
}

.config-notes dd {
  color: var(--ink-2);
  font-size: 0.9rem;
}

/* metrics */

.metrics {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem 2.5rem;
}

.endpoints {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.endpoints th,
.endpoints td {
  padding: 0.7rem 0;
  border-top: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

.endpoints thead th {
  padding-top: 0;
  border-top: 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.endpoints tbody tr:last-child th,
.endpoints tbody tr:last-child td {
  border-bottom: 1px solid var(--rule);
}

.endpoints tbody th {
  padding-right: 1.5rem;
  font-weight: 500;
  white-space: nowrap;
}

.endpoints tbody th code {
  font-size: 0.875rem;
}

.endpoints td {
  color: var(--ink-2);
}

.series h3 {
  margin-bottom: 0.4rem;
}

.series p {
  margin-bottom: 0.9rem;
  color: var(--ink-2);
  font-size: 0.9375rem;
}

.series pre {
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--inset);
}

.states {
  display: grid;
  gap: 1rem 1.5rem;
}

.states div {
  padding-top: 0.75rem;
  border-top: 1px solid var(--rule);
}

.states dt {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 600;
}

.states dd {
  margin-top: 0.3rem;
  color: var(--ink-2);
  font-size: 0.875rem;
}

.logging {
  margin-top: 2rem;
  color: var(--ink-3);
  font-size: 0.9rem;
}

.after-terminal {
  margin-top: 1rem;
  color: var(--ink-2);
  font-size: 0.9375rem;
  max-width: 78ch;
}

/* dashboard screenshot, swapped with the theme */

.shot {
  margin-bottom: 2rem;
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
}

.shot .shot-light {
  display: none;
}

:root[data-theme="light"] .shot .shot-dark {
  display: none;
}

:root[data-theme="light"] .shot .shot-light {
  display: block;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .shot .shot-dark {
    display: none;
  }

  :root:not([data-theme="dark"]) .shot .shot-light {
    display: block;
  }
}

.shot figcaption {
  margin-top: 0.75rem;
  color: var(--ink-3);
  font-size: 0.9rem;
  max-width: 78ch;
}

/* ---------- footer ---------- */

.footer {
  border-top: 1px solid var(--rule);
  padding: 2rem 0 2.5rem;
}

.footer-row {
  display: grid;
  gap: 1.25rem;
}

.footer-brands {
  color: var(--ink-2);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.9375rem;
}

.footer-note {
  color: var(--ink-3);
  font-size: 0.875rem;
}

/* ---------- responsive ---------- */

@media (max-width: 719.98px) {
  .masthead-row {
    flex-wrap: wrap;
    gap: 0 1rem;
    padding: 0.5rem 0;
  }

  .mast-actions {
    margin-left: auto;
  }

  .nav {
    order: 3;
    flex-basis: 100%;
    justify-content: space-between;
    gap: 0;
    margin-left: -0.4rem;
    margin-right: -0.4rem;
    padding-bottom: 0.2rem;
  }

  .nav a {
    padding: 0.3rem 0.4rem;
    font-size: 0.875rem;
    white-space: nowrap;
  }

  /* Six links do not fit a small phone; Metrics sits just above Dashboard. */
  @media (max-width: 439.98px) {
    .nav a[href="#metrics"] {
      display: none;
    }
  }

  @media (max-width: 359.98px) {
    .nav a {
      padding-inline: 0.25rem;
      font-size: 0.8125rem;
    }
  }

  .tab-long {
    display: none;
  }

  .tab-short {
    display: inline;
  }

  .mast-github span {
    display: none;
  }

  .brands-by {
    display: none;
  }

  .hero-copy {
    order: -1;
    padding: 0.75rem 0 2rem;
  }

  .panel-board .board-l {
    display: none;
  }

  .panel-board .board-p {
    display: block;
  }

  .panel-plate,
  .panel-legend {
    float: none;
    justify-content: flex-start;
    padding-inline: 1rem;
  }

  .panel-legend {
    padding-top: 0.6rem;
  }

  .panel-board {
    padding: 1rem 1rem 0.5rem;
  }

  .panel-rail {
    padding-inline: 1rem;
  }

  .scenario {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
  }

  .scenario button {
    padding-inline: 0.5rem;
    font-size: 0.8125rem;
    line-height: 1.3;
  }

  .scenario button:nth-child(2) {
    border-right: 0;
  }

  .scenario button:nth-child(-n + 2) {
    border-bottom: 1px solid var(--rule-strong);
  }
}

@media (min-width: 560px) {
  .steps {
    grid-template-columns: 1fr 1fr;
  }

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

  .states {
    grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  }
}

@media (min-width: 720px) {
  :root {
    --gutter: 2rem;
  }

  .panel-rail {
    grid-template-columns: auto 1fr;
    align-items: start;
  }

  .panel-caption {
    min-height: calc(4 * 1.55 * 0.9375rem);
  }

  .hero-copy {
    grid-template-columns: minmax(0, 1.2fr) minmax(20rem, 0.8fr);
  }

  .legend div {
    grid-template-columns: minmax(15rem, 1fr) 2.2fr;
  }

  .install-row {
    grid-template-columns: minmax(15rem, 1fr) 1.6fr;
  }

  .bound {
    grid-template-columns: minmax(15rem, 1fr) 2.2fr;
  }

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

  .metrics .states {
    grid-column: 1 / -1;
  }

  .footer-row {
    grid-template-columns: auto 1fr auto;
    align-items: center;
  }

  .footer-links {
    justify-content: center;
  }
}

@media (min-width: 980px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }

  .config {
    grid-template-columns: minmax(0, 1.5fr) minmax(18rem, 1fr);
  }

  .hero {
    padding-top: 2rem;
  }
}