:root {
  --bg: #0f172a;
  --bg-elevated: #1e293b;
  --fg: #e2e8f0;
  --fg-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-hover: #0ea5e9;
  --border: #334155;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", "Helvetica Neue", sans-serif;
}

header {
  padding: 3rem 1.5rem 2rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.brand h1 {
  margin: 0;
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.tagline {
  margin: 0.5rem 0 0;
  color: var(--fg-muted);
  font-size: 1.1rem;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section { padding: 2.5rem 0; }
section + section { border-top: 1px solid var(--border); }

h2 {
  font-size: 1.5rem;
  margin: 0 0 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1rem; }
.lead { font-size: 1.1rem; color: var(--fg); }

ul, ol { padding-left: 1.5rem; margin: 0 0 1rem; }
li { margin-bottom: 0.5rem; }

code {
  font-family: ui-monospace, "Cascadia Mono", Menlo, monospace;
  font-size: 0.9em;
  background: var(--bg-elevated);
  padding: 0.05rem 0.35rem;
  border-radius: 3px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

.download-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 2rem 0 1rem;
}
.primary-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--accent);
  color: var(--bg);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1.05rem;
  transition: background 0.15s;
}
.primary-cta:hover {
  background: var(--accent-hover);
  text-decoration: none;
  color: var(--bg);
}
.dl-version {
  font-family: ui-monospace, monospace;
  font-size: 0.85em;
  background: rgba(15, 23, 42, 0.25);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}
.dl-meta {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.9rem;
}

.purchase-note {
  background: var(--bg-elevated);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  border-radius: 4px;
  font-size: 0.95rem;
}

.trial-note {
  font-size: 0.95rem;
  color: var(--fg-muted);
  font-style: italic;
}

.install-note p { color: var(--fg-muted); font-size: 0.95rem; }

footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--fg-muted);
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  header { padding: 2rem 1rem 1.5rem; }
  .brand h1 { font-size: 1.75rem; }
  section { padding: 2rem 0; }
}