:root {
  --bg: #0b0d12;
  --surface: #12151d;
  --border: #232836;
  --text: #eef1f7;
  --muted: #a3abbd;
  --primary: #3d7bff;
  --primary-hover: #5a8fff;
  --on-primary: #ffffff;
  --focus: #9bbcff;
  --radius: 12px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fb;
    --surface: #ffffff;
    --border: #dfe3ec;
    --text: #121620;
    --muted: #4c5568;
    --primary: #1f5fe0;
    --primary-hover: #194fbd;
    --focus: #1f5fe0;
    color-scheme: light;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans', sans-serif;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 16px;
  top: 16px;
  background: var(--surface);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 10;
}

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

.bar {
  border-bottom: 1px solid var(--border);
}

.bar-inner {
  display: flex;
  align-items: center;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 18px;
  min-height: 44px;
}

.hero {
  padding-top: 64px;
  padding-bottom: 48px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 6vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

h2 {
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 600;
}

h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
}

.lede {
  margin: 0 0 32px;
  color: var(--muted);
  font-size: 18px;
  max-width: 60ch;
}

.cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: var(--radius);
  background: var(--primary);
  color: var(--on-primary);
  font-weight: 600;
  text-decoration: none;
  transition: background-color 150ms ease;
}

.button:hover {
  background: var(--primary-hover);
}

.button.is-disabled {
  background: var(--border);
  color: var(--muted);
  cursor: not-allowed;
}

.build-line {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

section + section {
  padding-top: 48px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 768px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.card p,
.note {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.steps {
  margin: 0 0 16px;
  padding-left: 24px;
  max-width: 70ch;
}

.steps li + li {
  margin-top: 8px;
}

code {
  font: 14px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 6px;
  overflow-wrap: anywhere;
}

.facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 0 0 24px;
}

@media (min-width: 640px) {
  .facts {
    grid-template-columns: repeat(3, 1fr);
  }

  .facts .wide {
    grid-column: 1 / -1;
  }
}

.facts dt {
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

.facts dd {
  margin: 4px 0 0;
}

.notes {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.foot {
  padding-top: 48px;
  padding-bottom: 48px;
  color: var(--muted);
  font-size: 14px;
}

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