:root {
  --accent: #2f6bff;
  --ink: #1c1c1e;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #ffffff;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }
header.site {
  border-bottom: 1px solid var(--line);
  background: #fff;
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 18px; padding-bottom: 18px; flex-wrap: wrap; gap: 8px;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 20px; color: var(--ink); text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 7px; }
nav a { color: var(--accent); text-decoration: none; margin-left: 20px; font-size: 16px; }
nav a:hover { text-decoration: underline; }
main { padding: 40px 0 56px; }
h1 { font-size: 34px; line-height: 1.15; margin: 0 0 8px; letter-spacing: -0.5px; }
h2 { font-size: 22px; margin: 36px 0 10px; }
h3 { font-size: 18px; margin: 24px 0 6px; }
p, li { color: #2a2a2e; }
.lead { font-size: 20px; color: var(--muted); margin: 0 0 28px; }
.muted { color: var(--muted); }
a { color: var(--accent); }
.hero-icon { width: 96px; height: 96px; border-radius: 22px; margin-bottom: 18px; }
.btn {
  display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  padding: 11px 20px; border-radius: 10px; font-weight: 600; margin: 8px 8px 8px 0;
}
.btn.secondary { background: #eef1f6; color: var(--ink); }
ul.features { padding-left: 20px; }
ul.features li { margin: 6px 0; }
.card { border: 1px solid var(--line); border-radius: 12px; padding: 18px 22px; margin: 18px 0; }
code { background: #f2f3f5; padding: 1px 6px; border-radius: 5px; font-size: 0.92em; }
hr { border: none; border-top: 1px solid var(--line); margin: 36px 0; }
footer.site { border-top: 1px solid var(--line); color: var(--muted); font-size: 15px; }
footer.site .wrap { padding-top: 24px; padding-bottom: 40px; }
footer.site a { color: var(--muted); margin-right: 18px; }
@media (prefers-color-scheme: dark) {
  :root { --ink: #f2f2f7; --muted: #9aa0a6; --line: #2c2c2e; --bg: #161617; }
  body { background: var(--bg); color: var(--ink); }
  header.site, footer.site { background: #161617; }
  p, li { color: #d6d6db; }
  .btn.secondary { background: #2a2a2e; color: var(--ink); }
  code { background: #2a2a2e; }
}