* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  max-width: 1126px;
  min-height: 100vh;
  margin: 0 auto;
  border-inline: 1px solid var(--border);
}

a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 30;
  top: 8px;
  left: 8px;
  padding: 8px 12px;
  color: var(--bg);
  background: var(--text-h);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  min-height: 64px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 0 24px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.brand,
.header-link,
.desktop-nav a,
.mobile-nav a {
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}

.brand {
  color: var(--text-h);
  font-family: var(--mono);
  font-size: 16px;
}

.header-link {
  color: var(--accent);
}

.desktop-nav {
  display: flex;
  justify-content: center;
  gap: 24px;
}

.desktop-nav a {
  color: var(--text);
}

.desktop-nav a:hover,
.header-link:hover,
.mobile-nav a:hover {
  color: var(--text-h);
}

.mobile-menu {
  display: none;
}

.hero {
  padding: 48px 24px 32px;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow,
.capability-index,
.step-number {
  margin: 0 0 8px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 900px;
  margin-bottom: 18px;
  font-size: 64px;
  line-height: 1;
}

h2 {
  margin-bottom: 14px;
  font-size: 36px;
  line-height: 1.1;
}

h3 {
  margin-bottom: 9px;
  font-size: 18px;
  line-height: 1.25;
}

p {
  line-height: 1.65;
}

.hero-lede {
  max-width: 700px;
  margin: 0;
  font-size: 18px;
}

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

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  color: var(--text-h);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}

.button:hover {
  background: var(--code-bg);
  text-decoration: none;
}

.button-primary {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.button-primary:hover {
  color: #fff;
  background: color-mix(in srgb, var(--accent) 88%, var(--text-h));
  border-color: color-mix(in srgb, var(--accent) 88%, var(--text-h));
}

.product-visual {
  max-width: 920px;
  margin: 34px 0 0;
}

.product-visual img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.product-visual figcaption {
  margin-top: 10px;
  font-size: 12px;
}

.release-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  border-block: 1px solid var(--border);
}

.release-facts div {
  padding: 18px 24px;
  border-right: 1px solid var(--border);
}

.release-facts div:last-child {
  border-right: 0;
}

.release-facts dt {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.release-facts dd {
  margin: 5px 0 0;
  color: var(--text-h);
  font-size: 14px;
  font-weight: 500;
}

.section {
  padding: 68px 24px;
  border-top: 1px solid var(--border);
}

.release-facts + .section {
  border-top: 0;
}

.section-heading {
  max-width: 700px;
}

.section-heading > p:last-child {
  margin-bottom: 0;
  font-size: 17px;
}

.architecture-flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  margin: 36px 0 0;
  padding: 1px;
  list-style: none;
  background: var(--border);
}

.architecture-flow li {
  position: relative;
  min-height: 112px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px;
  background: var(--bg);
}

.architecture-flow li:not(:last-child)::after {
  content: "\2192";
  position: absolute;
  z-index: 1;
  top: 44px;
  right: -10px;
  color: var(--accent);
  font-weight: 700;
}

.architecture-flow strong {
  color: var(--text-h);
  font-size: 15px;
}

.architecture-flow span {
  font-size: 12px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 36px;
}

.capability-grid article {
  min-height: 220px;
  padding: 22px;
  background: var(--social-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.capability-grid p:last-child {
  margin: 0;
  font-size: 14px;
}

.install-section {
  background: var(--social-bg);
}

.steps {
  display: grid;
  gap: 24px;
  margin-top: 36px;
}

.steps section {
  min-width: 0;
}

pre {
  max-width: 100%;
  margin: 0;
  padding: 18px;
  overflow-x: auto;
  border: 1px solid var(--border);
  font-size: 13px;
  line-height: 1.65;
  white-space: pre;
}

.install-note {
  margin: 24px 0 0;
  font-size: 14px;
}

.install-note strong {
  color: var(--text-h);
}

.safety-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  margin-top: 34px;
}

.statement {
  margin: 0;
  color: var(--text-h);
  font-size: 24px;
  line-height: 1.45;
}

.check-list,
.limits-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li,
.limits-list li {
  display: grid;
  gap: 5px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
}

.check-list strong,
.limits-list strong {
  color: var(--text-h);
  font-size: 14px;
}

.check-list span,
.limits-list span {
  font-size: 14px;
  line-height: 1.55;
}

.limits-list {
  margin-top: 34px;
}

.limits-list li {
  grid-template-columns: minmax(150px, 0.35fr) 1fr;
  gap: 30px;
}

.closing {
  padding: 68px 24px;
  background: var(--social-bg);
  border-top: 1px solid var(--border);
}

.closing p:not(.eyebrow) {
  max-width: 620px;
  margin-bottom: 0;
  font-size: 17px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 24px;
  border-top: 1px solid var(--border);
  font-size: 12px;
}

footer p {
  max-width: 520px;
  margin: 0;
}

@media (prefers-color-scheme: dark) {
  .product-visual img {
    opacity: 0.92;
  }
}

@media (max-width: 820px) {
  .site-header {
    grid-template-columns: 1fr auto;
    min-height: 58px;
    padding: 0 20px;
  }

  .desktop-nav,
  .header-link {
    display: none;
  }

  .mobile-menu {
    display: block;
  }

  .mobile-menu summary {
    width: 28px;
    height: 28px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 4px;
    cursor: pointer;
    list-style: none;
  }

  .mobile-menu summary::-webkit-details-marker {
    display: none;
  }

  .mobile-menu summary span {
    width: 20px;
    height: 2px;
    display: block;
    background: var(--text-h);
    transition: transform 160ms ease, opacity 160ms ease;
  }

  .mobile-menu[open] summary span:first-child {
    transform: translateY(7px) rotate(45deg);
  }

  .mobile-menu[open] summary span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu[open] summary span:last-child {
    transform: translateY(-7px) rotate(-45deg);
  }

  .mobile-nav {
    position: absolute;
    inset: 58px 0 auto;
    display: grid;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }

  .mobile-nav a {
    padding: 12px 20px;
    color: var(--text);
    border-top: 1px solid var(--border);
  }

  .hero {
    padding: 42px 20px 28px;
  }

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

  .release-facts div:nth-child(2) {
    border-right: 0;
  }

  .release-facts div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--border);
  }

  .section,
  .closing {
    padding: 56px 20px;
  }

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

  .architecture-flow li {
    min-height: 82px;
  }

  .architecture-flow li:not(:last-child)::after {
    content: "\2193";
    top: auto;
    right: 20px;
    bottom: -13px;
  }

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

  .safety-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 560px) {
  h1 {
    font-size: 44px;
  }

  h2 {
    font-size: 30px;
  }

  .hero-lede {
    font-size: 17px;
  }

  .product-visual {
    margin-top: 30px;
  }

  .product-visual img {
    aspect-ratio: 4 / 3;
    object-position: top;
  }

  .product-visual figcaption {
    line-height: 1.5;
  }

  .release-facts div {
    padding: 15px 20px;
  }

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

  .capability-grid article {
    min-height: 0;
  }

  .limits-list li {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .statement {
    font-size: 21px;
  }

  footer {
    flex-direction: column;
    padding: 24px 20px;
  }
}

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

  .mobile-menu summary span {
    transition: none;
  }
}