:root {
  color-scheme: light;
  --background: #FAFAF7;
  --text: #111418;
  --muted: #5B6470;
  --rule: #D9DCE0;
  --hairline: 1px solid var(--rule);
  --grid-line: #EEEEE8;
  --accent: #1F4FD8;
  --sans: "IBM Plex Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  overflow-wrap: break-word;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 120ms ease, border-color 120ms ease;
}

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

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

.container {
  width: calc(100% - 2rem);
  max-width: 60rem;
  margin-inline: auto;
}

.visually-hidden,
.skip-link:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  position: absolute;
  z-index: 1;
  top: 1rem;
  left: 1rem;
  padding: 0.5rem 0.75rem;
  background: var(--background);
}

.site-header {
  padding-block: 3.5rem 2.75rem;
  border-bottom: var(--hairline);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 24px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.star-mark {
  width: 2rem;
  height: 2rem;
  flex: 0 0 2rem;
}

.wordmark {
  margin: 0;
  color: var(--text);
  font-family: var(--sans);
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.04em;
  text-decoration: none;
}

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

.metadata,
.label,
.section-heading,
.spec-list dt,
.product-url,
.site-footer,
.error-heading,
.error-message {
  font-family: var(--mono);
}

.metadata,
.label,
.section-heading,
.spec-list dt,
.error-message {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metadata {
  margin: 1.25rem 0 0;
  color: var(--muted);
  text-transform: none;
}

main {
  padding-block: 2.5rem 3.5rem;
}

.data-section + .data-section {
  margin-top: 2.75rem;
}

.section-heading {
  margin: 0 0 1.5rem;
  padding-top: 1rem;
  border-top: var(--hairline);
  color: var(--text);
  font-weight: 500;
}

.section-index {
  color: var(--accent);
}

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

.product-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 1.5rem;
  border: var(--hairline);
  border-radius: 2px;
  color: var(--text);
  text-decoration: none;
}

.product-card:hover,
.product-card:focus-visible {
  border-color: var(--accent);
  color: var(--text);
}

.product-card .label {
  margin: 0 0 1.75rem;
  color: var(--muted);
}

.product-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
}

.product-description {
  margin: 0 0 1.75rem;
  color: var(--muted);
}

.product-url {
  margin-top: auto;
  color: var(--accent);
  font-size: 0.8125rem;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.spec-list {
  margin: 0;
  border-top: var(--hairline);
}

.spec-row {
  display: grid;
  gap: 0.5rem;
  padding-block: 1.125rem;
  border-bottom: var(--hairline);
}

.spec-list dt {
  color: var(--muted);
  font-weight: 500;
}

.spec-list dd {
  min-width: 0;
  margin: 0;
}

.email-link {
  font-family: var(--mono);
  font-size: 0.875rem;
  overflow-wrap: anywhere;
}

address {
  font-style: normal;
}

.site-footer {
  padding-block: 1.5rem 2rem;
  border-top: var(--hairline);
  color: var(--muted);
  font-size: 0.75rem;
}

.site-footer p {
  margin: 0;
}

.legal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-top: 0.75rem;
}

.page-heading {
  margin: 0;
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  font-weight: 600;
  line-height: 1.25;
}

.prose .last-updated {
  margin-block: 1rem 2.5rem;
}

.prose {
  max-width: 46rem;
}

.prose .data-section + .data-section {
  margin-top: 2rem;
}

.prose p {
  margin-block: 0 1rem;
}

.prose .section-heading {
  margin-bottom: 1rem;
}

.error-page {
  padding-block: 3.5rem 5rem;
}

.error-heading {
  margin: 0 0 1.25rem;
  font-size: clamp(1.125rem, 4vw, 1.5rem);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

.error-message {
  margin: 0 0 2rem;
  color: var(--muted);
}

@media (min-width: 36rem) {
  .container {
    width: calc(100% - 3rem);
  }

  .spec-row {
    grid-template-columns: minmax(0, 35fr) minmax(0, 65fr);
    gap: 1.5rem;
  }
}

@media (min-width: 48rem) {
  .site-header {
    padding-block: 4.5rem 3.5rem;
  }

  main {
    padding-block: 3rem 4.5rem;
  }

  .product-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .site-footer {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1.5rem;
  }

  .legal-nav {
    margin-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none;
  }
}