:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #5b6270;
  --border: #e2e5ea;
  --accent: #2f6fed;
  --accent-text: #ffffff;
  --code-bg: #f0f2f5;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a21;
    --text: #e8eaee;
    --muted: #9aa2b1;
    --border: #2a2f3a;
    --accent: #5b8cff;
    --accent-text: #0f1115;
    --code-bg: #1e222b;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 860px; margin: 0 auto; padding: 48px 16px 64px; }
main.narrow { max-width: 560px; }
h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); line-height: 1.15; margin: 0 0 12px; }
h2 { font-size: 1.35rem; margin: 48px 0 12px; }
p { margin: 0 0 14px; }
a { color: var(--accent); }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 640px; }
.muted { color: var(--muted); font-size: 0.92rem; }
.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  border: 0;
  border-radius: 8px;
  padding: 12px 22px;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid .card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.grid .card p { margin: 0; color: var(--muted); }
.alert {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  font: 14px/1.6 ui-monospace, SFMono-Regular, Consolas, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.price { font-size: 2.4rem; font-weight: 700; margin: 0; }
.price span { font-size: 1rem; font-weight: 400; color: var(--muted); }
.pricing { max-width: 420px; }
.pricing ul { padding-left: 20px; margin: 12px 0 20px; }
details { border-bottom: 1px solid var(--border); padding: 12px 0; }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 8px 0 0; color: var(--muted); }
footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--border); }
.terms h2 { font-size: 1.1rem; margin-top: 28px; }
.draft {
  border: 1px dashed var(--muted);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--muted);
}