:root {
  --blue: #1473e6;
  --ink: #16202c;
  --muted: #5b6878;
  --line: #e3e8ef;
  --bg: #ffffff;
  --soft: #f4f7fb;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #e8edf3; --muted: #9aa8b8; --line: #2a3442; --bg: #0f1620; --soft: #17212d; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header { border-bottom: 1px solid var(--line); }
header .wrap { display: flex; align-items: center; gap: 12px; height: 64px; }
header a.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; letter-spacing: 0.02em; }
header img { width: 32px; height: 32px; border-radius: 8px; }
header nav { margin-left: auto; display: flex; gap: 18px; font-size: 15px; }
header nav a { color: var(--muted); text-decoration: none; }
header nav a:hover { color: var(--blue); }
main { padding: 40px 0 64px; }
h1 { font-size: 34px; line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.01em; }
h2 { font-size: 21px; margin: 36px 0 8px; }
p, li { color: var(--ink); }
.lead { font-size: 20px; color: var(--muted); margin: 0 0 28px; text-wrap: pretty; }
.muted { color: var(--muted); font-size: 15px; }
a { color: var(--blue); }
.hero { display: flex; align-items: center; gap: 28px; margin-bottom: 8px; }
.hero img { width: 112px; height: 112px; border-radius: 26px; flex: none; }
.features { list-style: none; padding: 0; margin: 28px 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.features li { background: var(--soft); border-radius: 12px; padding: 14px 16px; }
.features strong { display: block; }
.features span { color: var(--muted); font-size: 15px; }
.contact { background: var(--soft); border-radius: 12px; padding: 18px 20px; margin: 24px 0; }
footer { border-top: 1px solid var(--line); padding: 20px 0 32px; color: var(--muted); font-size: 14px; }
@media (max-width: 560px) {
  .hero { flex-direction: column; align-items: flex-start; gap: 16px; }
  .hero img { width: 84px; height: 84px; border-radius: 20px; }
  h1 { font-size: 28px; }
  header nav { gap: 12px; }
}