/* bardbro.com — Bardbro, and Latch, its product.
   Black, white, hairlines. Geist for text, Geist Mono for labels and data.
   One blue, the logo's, lightened to read on black: focus rings only.
   Grid: 12 columns, max 1232px. Spacing: 4px base (--s-*).
   Radii: 12px on pictures of app windows, 4px on keycaps, square everywhere else.
   Layers: header 10, skip link 20. */

@font-face {
  font-family: Geist;
  src: url("/fonts/geist-var.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Geist Mono";
  src: url("/fonts/geist-mono-var.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #000;
  --bg-2: #0b0b0b;
  --fg: #f5f5f5;
  --fg-2: #a8a8a8;
  --fg-3: #8f8f8f;
  --line: #262626;
  --line-2: #474747;
  --accent: #4f8fe8;
  --sans: Geist, ui-sans-serif, system-ui, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 2.5rem;
  --s-8: 3rem;
  --s-9: 4rem;
  --s-10: 6rem;

  --gutter: clamp(1.25rem, 4vw, 3rem);
  --max: 77rem;
  --gap: clamp(1rem, 2vw, 1.5rem);
  --section: clamp(5.5rem, 4rem + 5vw, 9rem);
  --head-gap: clamp(3rem, 2rem + 3vw, 5rem);
  --r-window: 12px;
  --r-key: 4px;
  --top: 64px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--top) + var(--s-4));
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 1rem/1.6 var(--sans);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
::selection {
  background: var(--fg);
  color: var(--bg);
}
h1,
h2,
h3,
p,
figure,
dl,
dd,
ol,
ul,
pre {
  margin: 0;
}
ol,
ul {
  padding: 0;
  list-style: none;
}
h1,
h2,
h3 {
  font-weight: 600;
  text-wrap: balance;
}
p,
li,
dd {
  text-wrap: pretty;
}
b,
strong {
  font-weight: 550;
  color: var(--fg);
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}
code,
kbd,
pre {
  font-family: var(--mono);
}
code {
  font-size: 0.875em;
  color: var(--fg);
  overflow-wrap: anywhere;
}
kbd {
  display: inline-block;
  font-size: 0.8125em;
  line-height: 1.4;
  padding: 0 0.35em;
  border: 1px solid var(--line-2);
  border-radius: var(--r-key);
  color: var(--fg);
  white-space: nowrap;
}
.keys {
  white-space: nowrap;
}
button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}
[hidden] {
  display: none !important;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

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

/* Arrows are Geist Mono glyphs so ↗ and ↓ share one weight. */
.arr {
  display: inline-block;
  font-family: var(--mono);
  font-weight: 400;
  line-height: 1;
  transition: transform 0.2s ease;
}
a:hover .arr {
  transform: translate(2px, -2px);
}
a[href^="#"]:hover .arr,
a[href$="#download"]:hover .arr,
a[href$=".zip"]:hover .arr,
a[href$=".tar.gz"]:hover .arr {
  transform: translateY(2px);
}
a:hover .arr-r {
  transform: translateX(3px);
}

.skip {
  position: fixed;
  left: var(--s-4);
  top: calc(-1 * var(--s-10));
  z-index: 20;
  padding: var(--s-3) var(--s-4);
  background: var(--fg);
  color: var(--bg);
  font-weight: 550;
}
.skip:focus {
  top: var(--s-4);
}

/* Buttons and links */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-3);
  min-height: 48px;
  padding: 0 var(--s-5);
  border: 1px solid transparent;
  font-size: 0.9375rem;
  font-weight: 550;
  line-height: 1.2;
  white-space: nowrap;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease;
}
.btn-primary {
  background: var(--fg);
  border-color: var(--fg);
  color: var(--bg);
}
.btn:active,
.btn-file:active,
.copy:active {
  transform: translateY(1px);
}
.btn-primary:hover {
  background: #d4d4d4;
  border-color: #d4d4d4;
}
.btn-ghost {
  border-color: var(--line-2);
  color: var(--fg);
}
.btn-ghost:hover {
  border-color: var(--fg);
}
.btn-small {
  min-height: 44px;
  padding: 0 var(--s-4);
  font-size: 0.875rem;
}
.btn-block {
  width: 100%;
  justify-content: space-between;
}
.btn-file {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: baseline;
  column-gap: var(--s-3);
  row-gap: var(--s-1);
  width: 100%;
  padding: var(--s-4) var(--s-5);
  background: var(--fg);
  border: 1px solid var(--fg);
  color: var(--bg);
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease;
}
.btn-file:hover {
  background: #d4d4d4;
  border-color: #d4d4d4;
}
.file-label {
  font-size: 0.9375rem;
  font-weight: 550;
  line-height: 1.3;
}
.file-for {
  font-weight: inherit;
}
.file-size {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: #4a4a4a;
  white-space: nowrap;
}
.file-meta {
  grid-column: 1 / -1;
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 1.4;
  color: #4a4a4a;
  overflow-wrap: anywhere;
}
.link {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  min-height: 44px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--fg);
  text-decoration: underline;
  text-decoration-color: var(--line-2);
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
  transition: text-decoration-color 0.2s ease;
}
.link:hover {
  text-decoration-color: var(--fg);
}
.link-inline {
  color: var(--fg);
  text-decoration: underline;
  text-decoration-color: var(--line-2);
  text-underline-offset: 4px;
}
.link-inline:hover {
  text-decoration-color: var(--fg);
}

/* Header */
.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.top-bar {
  height: var(--top);
  display: flex;
  align-items: center;
  gap: var(--s-6);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  min-height: 44px;
  font-size: 1.1875rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.brand img {
  width: 28px;
  height: 28px;
}
/* "Latch by Bardbro": the product's name, then its maker, as a second link. */
.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
}
.brand-by {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 0.875rem;
  color: var(--fg-2);
  transition: color 0.2s ease;
}
.brand-by:hover {
  color: var(--fg);
}
.top-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
}
.top-nav a {
  display: inline-flex;
  align-items: center;
  gap: var(--s-1);
  min-height: 44px;
  padding: 0 var(--s-3);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-2);
  transition: color 0.2s ease;
}
.top-nav a:hover {
  color: var(--fg);
}

/* Hero */
.hero {
  padding-top: clamp(3.5rem, 2rem + 6vw, 8rem);
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  column-gap: var(--s-5);
  row-gap: var(--s-2);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.hero-meta > * {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
}
.hero-meta > * + *::before {
  content: "";
  width: 1px;
  height: 0.875rem;
  margin-right: calc(var(--s-5) - var(--s-2));
  background: var(--line-2);
}
.hero-meta span:first-child {
  color: var(--fg);
}
.hero-meta a {
  color: var(--fg);
  min-height: 44px;
}
.hero-meta a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.hero h1 {
  margin-top: var(--s-6);
  max-width: 13em;
  font-size: clamp(2.25rem, 0.9rem + 6.4vw, 6rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}
.hero-foot {
  margin-top: clamp(2rem, 1.5rem + 2vw, 3rem);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gap);
  row-gap: var(--s-6);
  align-items: end;
}
.lede {
  grid-column: 1 / span 7;
  max-width: 36em;
  font-size: clamp(1.0625rem, 0.95rem + 0.45vw, 1.3125rem);
  line-height: 1.5;
  color: var(--fg-2);
}
.actions {
  grid-column: 8 / -1;
  justify-self: end;
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
}
.hero-shot {
  margin-top: clamp(3rem, 2rem + 4vw, 6rem);
}

/* Pictures of app windows */
.window {
  overflow: hidden;
  border: 1px solid #333;
  border-radius: var(--r-window);
  background: #0a0a0a;
}
.window img {
  width: 100%;
}

.caption {
  display: flex;
  gap: var(--s-4);
  margin-top: var(--s-4);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--fg-2);
}
.caption-no {
  flex: none;
  min-width: 3.5rem;
  padding-top: 0.1em;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-3);
}

/* Sections */
.section {
  padding-top: var(--section);
}
.section-head {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gap);
  row-gap: var(--s-6);
  padding-top: var(--s-5);
  margin-bottom: var(--head-gap);
  border-top: 1px solid var(--line);
}
.label {
  grid-column: 1 / span 3;
  display: flex;
  gap: var(--s-3);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.label-no {
  color: var(--fg);
}
.section-title {
  grid-column: 4 / -1;
}
.section-title h2 {
  max-width: 15em;
  font-size: clamp(2rem, 1.1rem + 3.4vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}
.intro {
  margin-top: var(--s-5);
  max-width: 36em;
  font-size: clamp(1.0625rem, 1rem + 0.25vw, 1.1875rem);
  line-height: 1.55;
  color: var(--fg-2);
}
.section-title .actions {
  margin-top: var(--s-6);
  justify-self: start;
}
.head-links {
  display: flex;
  flex-wrap: wrap;
  column-gap: var(--s-6);
  margin-top: var(--s-4);
}

/* 01 Session */
.step {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gap);
  row-gap: var(--s-6);
  align-items: center;
}
.step + .step {
  margin-top: clamp(4rem, 3rem + 4vw, 7rem);
}
.step-copy {
  grid-column: 1 / span 5;
  padding-top: var(--s-5);
  border-top: 1px solid var(--line);
}
.step-no {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.step h3 {
  margin-top: var(--s-3);
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.step-copy p:not(.step-no) {
  margin-top: var(--s-4);
  color: var(--fg-2);
}
.step-copy p:not(.step-no) {
  max-width: 30em;
}
.step-shot {
  grid-column: 7 / -1;
  width: 100%;
}
.phrase {
  display: inline;
}
.phrase-stack .phrase {
  display: block;
}
.step-wide {
  align-items: start;
}
.toolbar {
  grid-column: 1 / -1;
  min-width: 0;
}
.toolbar-scroll {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
}
.toolbar-track {
  position: relative;
  min-width: 1120px;
}
@media (min-width: 1024px) {
  .toolbar-track {
    min-width: 0;
  }
}
.marks {
  position: relative;
  height: 2.75rem;
}
.marks li {
  position: absolute;
  top: 0;
  width: 1.5rem;
  margin-left: -0.75rem;
  padding-top: var(--s-4);
  text-align: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--fg-2);
}
.marks li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: var(--s-3);
  background: var(--line-2);
}
/* Centres of the toolbar items, as a share of the 1560 px render. */
.mark-1 {
  left: 9.55%;
}
.mark-2 {
  left: 25.66%;
}
.mark-3 {
  left: 39.5%;
}
.mark-4 {
  left: 63%;
}
.mark-5 {
  left: 68.09%;
}
.mark-6 {
  left: 72.45%;
}
.mark-7 {
  left: 82.56%;
}
.mark-8 {
  left: 88.64%;
}
.legend {
  counter-reset: legend;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  column-gap: var(--gap);
  row-gap: var(--s-5);
  margin-top: var(--s-7);
}
.legend li {
  counter-increment: legend;
  position: relative;
  padding-left: var(--s-5);
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--fg-2);
}
.legend li::before {
  content: counter(legend);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 1.8;
  color: var(--fg-3);
}
.legend b {
  display: block;
  font-weight: 550;
}

/* 02 Network */
.routes-diagram {
  display: grid;
  grid-template-columns: minmax(9rem, 14rem) minmax(0, 1fr) minmax(9rem, 14rem);
  border: 1px solid var(--line);
}
.node {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--s-2);
  padding: var(--s-5);
  font-size: 1.125rem;
  font-weight: 550;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.node-from {
  border-right: 1px solid var(--line);
}
.node-to {
  border-left: 1px solid var(--line);
  text-align: right;
}
.node-kind {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.lanes {
  display: grid;
  align-content: center;
  row-gap: var(--s-6);
  padding-block: var(--s-7);
}
.lanes li {
  display: grid;
  justify-items: center;
  row-gap: var(--s-2);
  text-align: center;
}
.lane-line {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  width: 100%;
}
.lane-line::before,
.lane-line::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--fg-2);
}
.lanes li:nth-child(2) .lane-line::before,
.lanes li:nth-child(2) .lane-line::after {
  border-top-style: dashed;
}
.lanes li:nth-child(3) .lane-line::before,
.lanes li:nth-child(3) .lane-line::after {
  border-top-style: dotted;
  border-top-width: 2px;
}
.lane-line > span + span {
  margin-left: calc(-1 * var(--s-1));
}
.lane-no {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--fg-3);
}
.lane-name {
  font-weight: 550;
}
.lane-note {
  max-width: 26em;
  padding-inline: var(--s-5);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--fg-2);
}
.facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: var(--gap);
  row-gap: var(--s-7);
  margin-top: var(--s-9);
}
.facts > div {
  padding-top: var(--s-4);
  border-top: 1px solid var(--line);
}
.facts dt,
.spec-list dt,
.platform dt,
.foot-head {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.facts dt {
  color: var(--fg);
}
.facts dd {
  margin-top: var(--s-3);
  max-width: 30em;
  font-size: 0.9375rem;
  color: var(--fg-2);
}
.section-link {
  margin-top: var(--s-7);
}

/* 03 Specifications */
.specs {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gap);
  row-gap: var(--s-8);
  align-items: start;
}
.specs-shot {
  grid-column: 1 / span 4;
  position: sticky;
  top: calc(var(--top) + var(--s-6));
}
.spec-list {
  grid-column: 6 / -1;
  border-bottom: 1px solid var(--line);
}
.spec-list > div {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  column-gap: var(--gap);
  padding-block: var(--s-5);
  border-top: 1px solid var(--line);
}
.spec-list dt {
  padding-top: 0.3em;
  color: var(--fg-2);
}
.spec-list dd {
  font-size: 1rem;
  line-height: 1.55;
  font-variant-numeric: tabular-nums;
}
.spec-list dd > * + * {
  margin-top: var(--s-2);
}
.values li {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  column-gap: var(--s-4);
  color: var(--fg-2);
}
.values li + li {
  margin-top: var(--s-1);
}
.values b {
  font-weight: 500;
}
.sub {
  font-size: 0.875rem;
  color: var(--fg-2);
}

/* 04 Platforms: one column per platform, rows aligned across columns. */
.platforms {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-template-rows: repeat(6, auto);
  column-gap: var(--gap);
}
.platform {
  grid-row: span 6;
  display: grid;
  grid-template-rows: subgrid;
}
.platform h3 {
  padding-bottom: var(--s-5);
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.platform dl {
  grid-row: span 4;
  display: grid;
  grid-template-rows: subgrid;
}
.platform dl > div {
  padding-block: var(--s-4);
  border-top: 1px solid var(--line);
}
.platform dt {
  color: var(--fg-3);
}
.platform dd {
  margin-top: var(--s-2);
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--fg-2);
}
.platform .link {
  align-self: start;
  justify-self: start;
  margin-top: var(--s-2);
  padding-top: var(--s-2);
}
.platform dl > div:last-child {
  border-bottom: 1px solid var(--line);
}

/* 05 Download */
.dl {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gap);
  row-gap: var(--s-5);
  padding-block: var(--s-7);
  border-top: 1px solid var(--line);
}
.dl:last-child {
  border-bottom: 1px solid var(--line);
}
.dl-name {
  grid-column: 1 / span 3;
}
.dl-name h3 {
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.dl-meta {
  margin-top: var(--s-3);
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--fg-2);
}
.dl-body {
  grid-column: 4 / span 5;
  min-width: 0;
  font-size: 0.9375rem;
  color: var(--fg-2);
}
.dl-body > p {
  max-width: 40em;
}
.dl-action {
  grid-column: 9 / -1;
  padding-left: var(--s-6);
}
.dl-steps {
  counter-reset: dl;
  display: grid;
  gap: var(--s-3);
}
.dl-steps li {
  counter-increment: dl;
  position: relative;
  max-width: 40em;
  padding-left: var(--s-5);
}
.dl-steps li::before {
  content: counter(dl);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 2;
  color: var(--fg-3);
}
.code {
  margin-top: var(--s-4);
  background: var(--bg-2);
  border: 1px solid var(--line);
}
.code-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  padding-left: var(--s-4);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.code pre {
  padding: var(--s-4);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--fg);
  white-space: pre-wrap;
  overflow-wrap: break-word;
}
.code code {
  font-size: inherit;
  overflow-wrap: inherit;
}
/* One command per line; wrapped lines hang under the prompt. */
.cmd {
  display: block;
  padding-left: 2ch;
  text-indent: -2ch;
}
.cmd::before {
  content: "$ ";
  color: var(--fg-3);
}
.cmd-note {
  display: block;
  padding-left: 2ch;
  color: var(--fg-3);
}
.copy {
  align-self: stretch;
  min-width: 5rem;
  min-height: 44px;
  padding: 0 var(--s-4);
  background: transparent;
  border: 0;
  border-left: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg);
  transition: border-color 0.2s ease;
}
.copy:hover {
  background: #161616;
}
.copy-status {
  font-size: 0.8125rem;
  color: var(--fg-2);
}
.copy-status:not(:empty) {
  margin-top: var(--s-2);
}
.note {
  max-width: 40em;
  margin-top: var(--s-4);
  font-size: 0.875rem;
  color: var(--fg-2);
}
.note-cmd {
  display: block;
  margin-top: var(--s-1);
}

/* Footer */
.foot {
  margin-top: var(--section);
  border-top: 1px solid var(--line);
}
.foot-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gap);
  row-gap: var(--s-7);
  padding-block: var(--s-9) var(--s-8);
}
.foot-brand {
  grid-column: 1 / span 6;
}
.foot-brand p {
  margin-top: var(--s-2);
  font-size: 0.875rem;
  color: var(--fg-2);
}
.foot-nav {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.foot-head {
  margin-bottom: var(--s-2);
  color: var(--fg-3);
}
.foot-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 0.9375rem;
  color: var(--fg-2);
  transition: color 0.2s ease;
}
.foot-nav a:hover {
  color: var(--fg);
}
.foot-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0 var(--s-4);
  padding-block: var(--s-3) var(--s-5);
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-3);
}

.foot-base a {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  min-height: 44px;
  color: var(--fg-2);
  transition: color 0.2s ease;
}
.foot-base a:hover {
  color: var(--fg);
}

/* 404 and the redirect stub */
.notfound {
  padding-block: clamp(5rem, 3rem + 8vw, 10rem);
}
.notfound h1 {
  margin-top: var(--s-6);
  font-size: clamp(2.5rem, 1.2rem + 5vw, 5rem);
  line-height: 1;
  letter-spacing: -0.045em;
}
.notfound p:not(.label) {
  margin-top: var(--s-5);
  max-width: 32em;
  font-size: 1.125rem;
  color: var(--fg-2);
}
.notfound .actions {
  justify-self: start;
  margin-top: var(--s-7);
}
.notfound .label {
  display: flex;
}
.foot-slim {
  margin-top: 0;
  border-top: 0;
}

/* Breakpoints: 1024 (desktop grid), 768 (tablet), 600 (phone) */
@media (max-width: 1023px) {
  .lede,
  .actions {
    grid-column: 1 / -1;
    justify-self: start;
  }
  .label,
  .section-title {
    grid-column: 1 / -1;
  }
  .step-copy,
  .step-wide .step-copy {
    grid-column: 1 / span 8;
  }
  .step-shot,
  .step-shot-tall {
    grid-column: 1 / -1;
    justify-self: start;
    max-width: 560px;
  }
  .legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .specs-shot {
    grid-column: 1 / -1;
    position: static;
    max-width: 440px;
  }
  .spec-list {
    grid-column: 1 / -1;
  }
  .platforms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(12, auto);
    row-gap: var(--s-8);
  }
  .platform {
    row-gap: 0;
  }
  .dl-name {
    grid-column: 1 / span 6;
  }
  .dl-action {
    grid-column: 7 / -1;
    align-self: start;
    padding-left: 0;
  }
  .dl-body {
    grid-column: 1 / -1;
    grid-row: 2;
  }
  .foot-brand {
    grid-column: 1 / -1;
  }
  .foot-nav {
    grid-column: span 4;
  }
}
@media (max-width: 767px) {
  .top-nav {
    display: none;
  }
  .top-bar .btn {
    margin-left: auto;
  }
  .step-copy,
  .step-wide .step-copy {
    grid-column: 1 / -1;
  }
  .routes-diagram {
    grid-template-columns: minmax(0, 1fr);
  }
  .node-from {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .node-to {
    border-left: 0;
    border-top: 1px solid var(--line);
    text-align: left;
  }
  .lanes {
    padding-block: var(--s-6);
  }
  .spec-list > div {
    grid-template-columns: minmax(0, 1fr);
    row-gap: var(--s-2);
  }
}
@media (max-width: 599px) {
  .hero-meta-kind {
    display: none !important;
  }
  .phrase {
    display: block;
  }
  .file-for {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
  .legend,
  .facts {
    grid-template-columns: minmax(0, 1fr);
  }
  .platforms {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: none;
  }
  .platform,
  .platform dl {
    grid-row: auto;
    grid-template-rows: none;
  }
  .dl-name,
  .dl-action {
    grid-column: 1 / -1;
  }
  .dl-action {
    grid-row: 3;
  }
  .foot-nav {
    grid-column: span 6;
  }
  .values li {
    grid-template-columns: 6.5rem minmax(0, 1fr);
  }
  .actions {
    width: 100%;
  }
  .actions .btn {
    flex: 1 1 100%;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
  }
}