:root {
  --board: #0b1220;
  --board2: #0f1830;
  --rail: #08101c;
  --chalk: #e9edf2;
  --dust: #aab4be;
  --faint: #7f8c99;
  --line: #27334a;
  --accent: #5ec6ff;
  --good: #3dd68c;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, Helvetica, sans-serif;
}

* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  min-width: 320px;
  background: var(--board);
  color: var(--chalk);
  font-family: var(--sans);
  line-height: 1.55;
  background-image: radial-gradient(900px 480px at 90% -8%, #12203d 0%, transparent 58%);
}
a { color: inherit; text-underline-offset: .2em; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
.skip-link {
  position: fixed; z-index: 10; top: 12px; left: 12px; padding: 9px 13px;
  border-radius: 8px; color: #041018; background: var(--accent); font-weight: 700;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.wrap { max-width: 980px; margin: 0 auto; padding: 28px 22px 80px; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand {
  display: flex; flex: 0 0 auto; align-items: center; gap: 10px;
  text-decoration: none; font-weight: 700; letter-spacing: -.03em;
}
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.brand .tld { color: var(--accent); }
.nav-links, footer nav { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.nav-links a, footer a { color: var(--dust); text-decoration: none; }
.nav-links a { font-size: 13px; }
.nav-links a:hover, footer a:hover, .support-link:hover { color: var(--chalk); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px;
  padding: 11px 18px; border: 1px solid transparent; border-radius: 9px;
  font-size: 14px; font-weight: 650; text-decoration: none;
}
.btn.primary { color: #041018; background: var(--accent); }
.btn.primary:hover { filter: brightness(1.06); }
.btn.ghost { border-color: var(--line); color: var(--chalk); background: transparent; }
.btn.ghost:hover { border-color: var(--dust); }
.hero {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px;
  align-items: end; margin-top: 56px;
}
.eyebrow, h2.sec {
  font-family: var(--mono); font-size: 11px; letter-spacing: .18em; text-transform: uppercase;
}
.eyebrow { color: var(--accent); }
h1 {
  margin-top: 14px; font-size: clamp(36px, 6.4vw, 62px); font-weight: 750;
  line-height: .98; letter-spacing: -.035em; text-wrap: balance;
}
.lede { max-width: 48ch; margin-top: 18px; color: var(--dust); font-size: 17.5px; }
.lede b { color: var(--chalk); font-weight: 600; }
.price-card, .card, .maturity .col { border: 1px solid var(--line); background: var(--board2); }
.price-card { padding: 22px; border-radius: 16px; }
.price-card .amt { font-family: var(--mono); font-size: 42px; letter-spacing: -.04em; }
.price-card .amt span { color: var(--faint); font-size: 16px; }
.price-card p { margin: 10px 0 18px; color: var(--dust); font-size: 14.5px; }
.price-card .btn { width: 100%; }
.price-card .btn.dl { gap: 8px; margin-top: 8px; }
.dl-icon { color: var(--accent); font-family: var(--mono); font-size: 15px; line-height: 1; }
.fine, .support-link { display: block; margin-top: 10px; font-family: var(--mono); font-size: 11px; }
.fine { color: var(--faint); }
.support-link { color: var(--dust); }
.proof { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 36px; }
.stat { padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--rail); }
.stat b { display: block; font-family: var(--mono); font-size: 15px; }
.stat span { display: block; margin-top: 4px; color: var(--faint); font-size: 12px; }
h2.sec { margin: 72px 0 8px; color: var(--faint); }
.secnote { max-width: 68ch; margin-bottom: 20px; color: var(--dust); }
.grid3, .os, .maturity { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.card { padding: 18px; border-radius: 14px; }
.card h3 { font-size: 17px; letter-spacing: -.02em; }
.card p { margin-top: 8px; color: var(--dust); font-size: 14px; }
.rungs { border-top: 1px solid var(--line); }
.rung {
  display: grid; grid-template-columns: 72px 1fr; gap: 16px;
  padding: 22px 0; border-bottom: 1px solid var(--line);
}
.rung .n { padding-top: 3px; color: var(--accent); font-family: var(--mono); font-size: 12px; }
.rung p { margin-top: 4px; color: var(--dust); }
.maturity .col { padding: 18px; border-top: 3px solid var(--line); border-radius: 14px; }
.maturity .col.works { border-top-color: var(--good); }
.maturity .col h3 { font-size: 14px; letter-spacing: -.01em; }
.maturity .col ul {
  margin-top: 12px; padding-left: 18px; color: var(--dust);
  font-size: 13.5px; line-height: 1.7;
}
.maturity .col li { margin-bottom: 2px; }
.maturity-note { margin-top: 14px; color: var(--faint); font-family: var(--mono); font-size: 12px; }
.os .card pre {
  margin-top: 12px; overflow-x: auto; color: var(--accent); font-family: var(--mono);
  font-size: 12px; white-space: pre-wrap; overflow-wrap: anywhere;
}
.os .soon { margin-top: 10px; color: var(--faint); font-family: var(--mono); font-size: 11px; }
.os .soon a { color: var(--accent); }
footer {
  display: flex; justify-content: space-between; gap: 14px 24px; flex-wrap: wrap;
  margin-top: 72px; padding-top: 22px; border-top: 1px solid var(--line);
  color: var(--faint); font-family: var(--mono); font-size: 12px;
}
.page-main { max-width: 760px; min-height: 62vh; margin-top: 64px; }
.page-main h1 { max-width: 16ch; }
.page-intro { margin-top: 22px; color: var(--dust); font-size: 18px; }
.prose-section { margin-top: 48px; }
.prose-section h2 { font-size: 24px; letter-spacing: -.025em; }
.prose-section p { margin-top: 14px; color: var(--dust); }
.prose-section ul { margin-top: 14px; padding-left: 22px; color: var(--dust); }
.prose-section li + li { margin-top: 8px; }
.contact-cards {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px; margin-top: 28px;
}
.contact-cards .card h2 { font-size: 19px; }
.contact-cards .card a { display: inline-block; margin-top: 16px; color: var(--accent); font-weight: 650; }
.notice {
  margin-top: 28px; padding: 16px 18px; border-left: 3px solid var(--accent);
  background: var(--rail); color: var(--dust);
}

@media (max-width: 820px) {
  .hero, .grid3, .os, .maturity { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .wrap { padding: 20px 18px 56px; }
  .nav { align-items: flex-start; flex-direction: column; }
  .nav-links { width: 100%; gap: 8px 14px; }
  .nav-links .btn { margin-left: auto; }
  .hero { margin-top: 44px; }
  .proof, .contact-cards { grid-template-columns: 1fr; }
  .rung { grid-template-columns: 42px 1fr; }
  .page-main { margin-top: 44px; }
}

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