:root {
  color-scheme: light dark;
  --background: #ffffff;
  --foreground: #000000;
  --muted: #4a4a4a;
  --border: #d7d7d7;
  --blue: #0a48ff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #000000;
    --foreground: #ffffff;
    --muted: #b8b8b8;
    --border: #333333;
  }
}

* { box-sizing: border-box; }

html { background: var(--background); }

body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.65;
}

header, main, footer {
  width: min(760px, calc(100% - 40px));
  margin-inline: auto;
}

header {
  padding: 42px 0 26px;
  border-bottom: 1px solid var(--border);
}

.home-header {
  padding-top: clamp(56px, 12vw, 110px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--foreground);
  font-size: 1.65rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.eyebrow {
  margin-top: 34px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blue);
}

h1 {
  margin: 30px 0 8px;
  font-size: clamp(2rem, 7vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.updated, .lede { color: var(--muted); }

main { padding: 18px 0 48px; }

section {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

h2 {
  margin: 0 0 9px;
  font-size: 1.15rem;
}

p, ul { margin: 8px 0; }

a { color: var(--blue); }

.page-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 10px 0 22px;
}

.page-card {
  min-height: 150px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--foreground);
  text-decoration: none;
  transition: border-color 150ms ease, transform 150ms ease;
}

.page-card:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
}

.page-card span {
  display: block;
  font-size: 1.05rem;
  font-weight: 800;
}

.page-card small {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.primary-link {
  display: inline-flex;
  padding: 12px 18px;
  border-radius: 12px;
  background: var(--blue);
  color: #ffffff;
  font-weight: 800;
  text-decoration: none;
}

footer {
  padding: 24px 0 48px;
  color: var(--muted);
}

.links { display: flex; flex-wrap: wrap; gap: 16px; }

.download-card {
  margin: 18px 0;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 20px;
}

.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  margin: 12px 0;
  padding: 0 22px;
  border-radius: 14px;
  background: var(--blue);
  color: #ffffff;
  font-weight: 800;
  text-decoration: none;
}

.download-button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--blue) 35%, transparent);
  outline-offset: 3px;
}

.checksum {
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82rem;
  color: var(--muted);
}

@media (max-width: 560px) {
  .page-grid { grid-template-columns: 1fr; }
  .page-card { min-height: auto; }
}