:root {
  --color-surface: #fbfbfb;
  --color-surface-alt: #f1f1f1;
  --color-surface-deep: #e4e3e3;
  --color-ink: #393233;
  --color-ink-soft: #685e60;
  --color-ink-muted: #857a7c;
  --color-line: #d8d7d7;
  --color-primary: #ed0827;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #f9d9dd;
  --color-accent: #ec0e2c;
  --color-accent-ink: #ffffff;
  --color-highlight: #f8d0d6;
  --color-focus: #e40120;
  --color-contrast-surface: #271113;
  --color-contrast-ink: #e7e4e5;
  --color-contrast-line: #513f41;
  --color-contrast-accent: #f3304a;
  --overlay-scrim: linear-gradient(180deg, rgba(39, 17, 19, 0.35) 0%, rgba(39, 17, 19, 0.72) 55%, rgba(39, 17, 19, 0.92) 100%);
  --font-heading: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --text-xs: 12.2px;
  --text-sm: 15.2px;
  --text-base: 17px;
  --text-lg: 21.2px;
  --text-xl: 26.6px;
  --text-2xl: 33.2px;
  --text-3xl: 41.5px;
  --text-4xl: 51.9px;
  --text-display: clamp(55px, 11.3vw, 145px);
  --text-figure: clamp(46px, 8.1vw, 104px);
  --weight-heading: 831;
  --weight-body: 400;
  --leading-body: 1.68;
  --leading-heading: 1.29;
  --tracking-heading: -0.006em;
  --radius-sm: 0px;
  --radius-md: 0px;
  --radius-lg: 0px;
  --radius-pill: 0px;
  --border-thin: 1px;
  --border-thick: 3px;
  --shadow-1: none;
  --shadow-2: none;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1120px;
  --measure: 71ch;
  --gutter: 24px;
  --section-y: 117px;
  --section-y-lg: 164px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  text-align: left;
}

p { margin: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

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

button { font: inherit; color: inherit; }

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

table { border-collapse: collapse; width: 100%; }

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

/* ============ utilities ============ */
.shell {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.measure { max-width: var(--measure); }

.stack > * + * { margin-top: var(--space-3); }

.rule {
  border: 0;
  border-top: var(--border-thin) solid var(--color-line);
  margin: 0;
}

.display {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 0.94;
  letter-spacing: -0.02em;
}

.figure-xl {
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 0.92;
  letter-spacing: -0.02em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

/* ============ skip link ============ */
.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -80px;
  z-index: 200;
  display: inline-block;
  padding: 10px 18px;
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: top 160ms ease;
}

.skip-link:focus { top: var(--space-3); }

/* ============ header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-top: var(--space-3);
  padding-bottom: var(--space-2);
  background-color: transparent;
}

.site-header.is-pinned { padding-top: var(--space-2); }

.scroll-progress {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  z-index: 120;
  pointer-events: none;
  background-color: transparent;
}

.scroll-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left center;
}

.pill-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px var(--space-3);
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand-mark {
  display: block;
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  background-color: var(--color-primary);
}

.brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  white-space: nowrap;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  transition: color 160ms ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 180ms ease;
}

.nav-link:hover { color: var(--color-ink); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link[aria-current="page"] {
  color: var(--color-ink);
  font-weight: 600;
}

.nav-link[aria-current="page"]::after { transform: scaleX(1); }

.nav-utility {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 0 8px;
  border: var(--border-thin) solid var(--color-ink-soft);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink);
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.nav-utility:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: none;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  cursor: pointer;
}

.nav-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); }

.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 14px;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  background-color: currentColor;
  transition: transform 160ms ease;
}

.pill-nav[data-open] .nav-toggle-bar:first-child { transform: translateY(3px) rotate(45deg); }
.pill-nav[data-open] .nav-toggle-bar:last-child { transform: translateY(-3px) rotate(-45deg); }

/* ============ section rhythm ============ */
.section {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
}

.section--lg {
  padding-top: var(--section-y-lg);
  padding-bottom: var(--section-y-lg);
}

.section--rule { border-top: var(--border-thin) solid var(--color-line); }
.section--alt { background-color: var(--color-surface-alt); }
.section--deep { background-color: var(--color-surface-deep); }

.section-head {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-2) var(--gutter);
  align-items: end;
  margin-bottom: var(--space-6);
}

.section-num {
  grid-column: span 2;
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.section-title {
  grid-column: span 7;
  font-size: var(--text-3xl);
}

.section-note {
  grid-column: span 3;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* ============ grid ============ */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-4) var(--gutter);
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* ============ prose ============ */
.prose { max-width: var(--measure); }

.prose > * + * { margin-top: var(--space-3); }

.prose h2 {
  font-size: var(--text-2xl);
  margin-top: var(--space-8);
}

.prose h3 {
  font-size: var(--text-xl);
  margin-top: var(--space-6);
}

.prose a {
  color: var(--color-primary);
  border-bottom: var(--border-thin) solid currentColor;
}

.prose a:hover { color: var(--color-accent); }

.prose strong { font-weight: 600; }

.prose ul,
.prose ol {
  list-style: none;
  padding-left: 0;
}

.prose li {
  position: relative;
  padding-left: var(--space-3);
  margin-top: 10px;
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  background-color: var(--color-primary);
}

.pull {
  border-left: var(--border-thick) solid var(--color-primary);
  background-color: var(--color-highlight);
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
}

/* ============ buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  background-color: transparent;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.btn:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.btn--primary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.btn--ghost { border-color: var(--color-ink-soft); }

/* ============ breadcrumbs ============ */
.breadcrumbs {
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumbs li + li::before {
  content: "/";
  color: var(--color-line);
}

.breadcrumbs a:hover { color: var(--color-primary); }
.breadcrumbs [aria-current="page"] { color: var(--color-ink); }

/* ============ file card ============ */
.file-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  background-color: var(--color-surface-alt);
  border-top: var(--border-thick) solid var(--color-line);
  border-radius: var(--radius-sm);
  transition: background-color 160ms ease, border-color 160ms ease;
}

.file-card:hover {
  background-color: var(--color-surface-deep);
  border-top-color: var(--color-primary);
}

.file-card-num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.file-card-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
}

.file-card-text {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.file-card-meta {
  margin-top: auto;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ============ tags ============ */
.tag {
  display: inline-block;
  padding: 2px 8px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
}

.tag--primary {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ============ expandable group ============ */
.expand {
  border-top: var(--border-thin) solid var(--color-line);
}

.expand:last-child { border-bottom: var(--border-thin) solid var(--color-line); }

.expand-trigger {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3) 0;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  cursor: pointer;
  transition: color 160ms ease;
}

.expand-trigger:hover { color: var(--color-primary); }

.expand-trigger::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-primary);
}

.expand.is-open .expand-trigger::after { content: "−"; }

.expand-panel {
  max-height: 0;
  opacity: 0;
  visibility: hidden;
  overflow: hidden;
  transition: max-height 180ms ease, opacity 180ms ease;
}

.expand.is-open .expand-panel {
  max-height: 900px;
  opacity: 1;
  visibility: visible;
}

.expand-panel > * {
  padding-bottom: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ============ toc ============ */
.toc {
  position: sticky;
  top: 110px;
  padding: var(--space-3);
  background-color: var(--color-surface-deep);
  border-top: var(--border-thick) solid var(--color-primary);
}

.toc-title {
  margin-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.toc-list li + li { margin-top: 2px; }

.toc-list a {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  transition: color 160ms ease;
}

.toc-list a::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 0.62em;
  background-color: var(--color-line);
  transition: background-color 180ms ease;
}

.toc-list a:hover { color: var(--color-ink); }

.toc-list a.is-active {
  color: var(--color-primary);
  font-weight: 600;
}

.toc-list a.is-active::before { background-color: var(--color-primary); }

/* ============ figures ============ */
.figure {
  display: block;
  margin: 0;
}

.figure-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background-color: var(--color-surface-deep);
}

.figure-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.9) contrast(1.06) brightness(0.96);
}

.figure--warm .figure-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background-color: var(--color-primary-soft);
  opacity: 0.28;
  mix-blend-mode: multiply;
  pointer-events: none;
}

.figure--ink .figure-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background-color: var(--color-contrast-surface);
  opacity: 0.42;
  mix-blend-mode: multiply;
  pointer-events: none;
}

.figure--overlay .figure-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}

.figure-body {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: var(--space-3);
  color: var(--color-contrast-ink);
}

.figure-caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.image-placeholder {
  display: flex;
  align-items: flex-end;
  width: 100%;
  aspect-ratio: 16 / 10;
  padding: var(--space-2);
  background-color: var(--color-surface-deep);
  background-image: repeating-conic-gradient(
    var(--color-surface-deep) 0% 25%,
    var(--color-surface-alt) 0% 50%
  );
  background-size: 40px 40px;
}

.image-placeholder-label {
  padding: 2px 6px;
  background-color: var(--color-surface);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

/* ============ contrast block ============ */
.contrast-block {
  padding: var(--space-8) var(--space-4);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.contrast-block .eyebrow { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); }
.contrast-block .rule { border-top-color: var(--color-contrast-line); }
.contrast-block a {
  color: var(--color-contrast-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.contrast-block .figure-xl { color: var(--color-contrast-accent); }

/* ============ footer ============ */
.site-footer {
  margin-top: var(--section-y);
  padding-top: var(--space-8);
  padding-bottom: var(--space-6);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-6) var(--gutter);
}

.footer-col--brand { grid-column: span 4; }
.footer-col--menu { grid-column: span 2; }
.footer-col--terms { grid-column: span 3; }
.footer-col--contact { grid-column: span 3; }

.brand-mark--contrast { background-color: var(--color-contrast-accent); }

.footer-brand {
  margin-top: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.footer-motto {
  margin-top: 8px;
  max-width: 22ch;
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

.footer-title {
  margin-bottom: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-contrast-ink);
}

.footer-list li {
  margin-bottom: 10px;
  font-size: var(--text-sm);
}

.footer-list a {
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.footer-list a:hover {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

.footer-field {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: color-mix(in srgb, var(--color-contrast-ink) 60%, transparent);
}

.footer-value {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  word-break: break-all;
  color: var(--color-contrast-ink);
}

.footer-value--plain { font-family: var(--font-body); word-break: normal; }

.copy-btn {
  display: inline-flex;
  align-items: center;
  margin-top: 6px;
  padding: 2px 8px;
  background: none;
  border: var(--border-thin) solid currentColor;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: inherit;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.copy-btn:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.copy-btn.is-done {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2) var(--space-6);
  margin-top: var(--space-8);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-xs);
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}

.footer-legal { letter-spacing: 0.08em; }

.footer-meta { max-width: 60ch; }

/* ============ responsive ============ */
@media (max-width: 1024px) {
  .section {
    padding-top: calc(var(--section-y) * 0.72);
    padding-bottom: calc(var(--section-y) * 0.72);
  }
  .section--lg {
    padding-top: calc(var(--section-y-lg) * 0.68);
    padding-bottom: calc(var(--section-y-lg) * 0.68);
  }
  .span-3, .span-4, .span-5 { grid-column: span 6; }
  .span-7, .span-8, .span-9 { grid-column: span 12; }
  .section-head { grid-template-columns: repeat(6, 1fr); }
  .section-num { grid-column: span 1; }
  .section-title { grid-column: span 5; }
  .section-note { grid-column: span 6; }
  .footer-col--brand { grid-column: span 12; }
  .footer-col--menu, .footer-col--terms, .footer-col--contact { grid-column: span 4; }
  .toc { position: static; }
}

@media (max-width: 880px) {
  .pill-nav {
    flex-wrap: wrap;
    padding: 10px var(--space-2);
  }
  .brand { order: 1; }
  .nav-utility { order: 2; margin-left: auto; }
  .nav-toggle { order: 3; }
  .nav-list {
    order: 4;
    flex-basis: 100%;
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    margin: var(--space-2) 0 0;
    border-top: var(--border-thin) solid var(--color-line);
  }
  .pill-nav[data-open] .nav-list { display: flex; }
  .nav-list li { width: 100%; }
  .nav-link {
    display: block;
    width: 100%;
    padding: 12px 0;
    border-bottom: var(--border-thin) solid var(--color-line);
  }
  .nav-link::after { display: none; }
  .nav-link[aria-current="page"] { color: var(--color-primary); }
  .nav-link[aria-current="page"]::before {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-right: 8px;
    vertical-align: middle;
    background-color: var(--color-primary);
  }
}

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .span-3, .span-4, .span-5, .span-6, .span-7, .span-8, .span-9, .span-12 { grid-column: span 1; }
  .section-head { grid-template-columns: 1fr; }
  .section-num, .section-title, .section-note { grid-column: span 1; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-col--brand, .footer-col--menu, .footer-col--terms, .footer-col--contact { grid-column: span 1; }
  .footer-base { flex-direction: column; }
}

@media (max-width: 420px) {
  .nav-utility { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .expand-panel { transition: none; }
}