:root {
  color-scheme: dark;
  --bg: #121212;
  --panel: #1e1e1e;
  --panel-soft: #181818;
  --hover: #2a2d2e;
  --border: #333;
  --text: #e0e0e0;
  --muted: #858585;
  --bright: #fff;
  --blue: #0067c0;
  --font: "Segoe UI", Inter, system-ui, sans-serif;
  --mono: "Cascadia Code", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}
a { color: inherit; }
.app-shell { min-height: 100vh; display: flex; flex-direction: column; }
.topbar {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(22px, calc((100vw - 1040px) / 2));
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; gap: 11px; align-items: center; text-decoration: none; }
.logo {
  width: 32px; height: 32px; display: grid; place-items: center;
  background: var(--bright); color: #111; font: 800 13px var(--mono);
}
.brand strong { display: block; font-size: 13px; letter-spacing: .12em; }
.brand small { display: block; margin-top: 2px; color: var(--muted); font-size: 9px; letter-spacing: .11em; }
nav { display: flex; gap: 4px; }
nav a { padding: 9px 12px; color: #b8b8b8; font-size: 13px; text-decoration: none; }
nav a:hover { background: var(--hover); color: var(--bright); }
main { width: min(1040px, calc(100% - 44px)); margin: 0 auto; flex: 1; }
.hero { padding: 92px 0 58px; border-bottom: 1px solid var(--border); }
.eyebrow, .section-label { color: #aaa; font: 600 11px var(--mono); letter-spacing: .13em; }
h1 { margin: 22px 0 20px; color: var(--bright); font-size: clamp(46px, 8vw, 78px); line-height: .98; letter-spacing: -.055em; }
.lead { max-width: 570px; margin: 0; color: #a8a8a8; font-size: 18px; line-height: 1.7; }
.downloads { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 40px 0; }
.download-card {
  min-height: 330px; display: flex; flex-direction: column; padding: 26px;
  background: var(--panel-soft); border: 1px solid var(--border);
}
.download-card:hover { border-color: #555; }
.primary-card { background: var(--panel); }
.tag { display: inline-block; padding: 4px 7px; background: var(--bright); color: #111; font: 700 10px var(--mono); letter-spacing: .09em; }
.tag.quiet { background: #292929; color: #bdbdbd; }
.download-card h2 { margin: 22px 0 10px; color: var(--bright); font-size: 26px; }
.download-card p { max-width: 330px; margin: 0; color: var(--muted); line-height: 1.65; }
.card-meta { display: flex; justify-content: space-between; margin-top: auto; padding: 20px 0 12px; color: #777; font: 11px var(--mono); border-top: 1px solid var(--border); }
.download-button {
  display: flex; justify-content: space-between; align-items: center; padding: 13px 15px;
  border: 1px solid #555; color: var(--bright); text-decoration: none; font-weight: 600;
}
.download-button:hover { background: var(--hover); }
.download-button.primary { background: var(--bright); border-color: var(--bright); color: #111; }
.download-button.primary:hover { background: #ddd; }
.checksum { margin-top: 11px; color: #686868; font: 10px var(--mono); }
.quick-start { display: grid; grid-template-columns: .7fr 1.3fr; gap: 50px; padding: 50px 0 72px; border-top: 1px solid var(--border); }
.quick-start h2 { margin: 9px 0 0; color: var(--bright); font-size: 28px; }
.quick-start ol { list-style: none; margin: 0; padding: 0; }
.quick-start li { display: flex; gap: 18px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.quick-start li span { color: #666; font: 11px var(--mono); }
code { font-family: var(--mono); }
footer {
  display: flex; justify-content: space-between; padding: 18px max(22px, calc((100vw - 1040px) / 2));
  border-top: 1px solid var(--border); color: #666; font-size: 11px;
}

.doc-main { width: min(880px, calc(100% - 44px)); padding: 58px 0 90px; }
.doc-header { padding-bottom: 30px; border-bottom: 1px solid var(--border); }
.doc-header h1 { margin: 12px 0; font-size: clamp(38px, 7vw, 58px); }
.doc-header p { color: var(--muted); }
.doc-section { padding: 34px 0 8px; }
.doc-section h2 { color: var(--bright); font-size: 22px; }
.doc-section h3 { margin-top: 28px; color: var(--bright); font-size: 16px; }
.doc-section p, .doc-section li { color: #aaa; line-height: 1.75; }
.command {
  margin: 10px 0; padding: 14px 16px; overflow-x: auto;
  background: #0d0d0d; border: 1px solid var(--border); color: #ddd; font: 13px var(--mono);
}
.command-grid { display: grid; grid-template-columns: 150px 1fr; border-top: 1px solid var(--border); }
.command-grid > * { padding: 15px 4px; border-bottom: 1px solid var(--border); }
.command-grid code { color: var(--bright); }
.command-grid span { color: var(--muted); line-height: 1.5; }
.release { display: grid; grid-template-columns: 120px 1fr; gap: 28px; padding: 30px 0; border-bottom: 1px solid var(--border); }
.release time { color: #777; font: 12px var(--mono); }
.release h2 { margin: 0 0 12px; color: var(--bright); }
.release ul { margin: 0; padding-left: 18px; }

@media (max-width: 720px) {
  .topbar { height: auto; min-height: 56px; padding: 10px 18px; }
  .brand small { display: none; }
  nav a { padding: 8px; font-size: 12px; }
  main, .doc-main { width: min(100% - 28px, 1040px); }
  .hero { padding: 65px 0 42px; }
  .downloads { grid-template-columns: 1fr; }
  .quick-start { grid-template-columns: 1fr; gap: 20px; }
  .command-grid { grid-template-columns: 1fr; }
  .command-grid > *:nth-child(odd) { border-bottom: 0; padding-bottom: 4px; }
  .command-grid > *:nth-child(even) { padding-top: 4px; }
  .release { grid-template-columns: 1fr; gap: 8px; }
  footer { padding: 18px; }
}