:root {
  color-scheme: light dark;
  --bg: #f4f4f8;
  --card: #ffffff;
  --text: #111111;
  --muted: #66666f;
  --line: rgba(0, 0, 0, 0.08);
  --accent: #000000;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #080808;
    --card: #171717;
    --text: #f7f7f7;
    --muted: #aaaaaf;
    --line: rgba(255, 255, 255, 0.11);
    --accent: #ffffff;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif;
  line-height: 1.7;
}
.shell { width: min(760px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 56px; }
nav { display: flex; align-items: center; justify-content: space-between; margin-bottom: 44px; }
.brand { color: var(--text); font-size: 21px; font-weight: 760; letter-spacing: -0.02em; text-decoration: none; }
.navlinks { display: flex; gap: 18px; }
.navlinks a { color: var(--muted); font-size: 15px; text-decoration: none; }
.navlinks a[aria-current="page"] { color: var(--text); font-weight: 650; }
main { background: var(--card); border: 1px solid var(--line); border-radius: 28px; padding: clamp(28px, 6vw, 56px); }
h1 { margin: 0 0 10px; font-size: clamp(34px, 7vw, 52px); letter-spacing: -0.04em; line-height: 1.12; }
.lead { margin: 0 0 36px; color: var(--muted); font-size: 17px; }
section { border-top: 1px solid var(--line); padding-top: 26px; margin-top: 26px; }
h2 { margin: 0 0 8px; font-size: 20px; letter-spacing: -0.015em; }
p, li { font-size: 16px; }
p { margin: 8px 0; }
ul { padding-left: 22px; }
a { color: var(--accent); text-underline-offset: 3px; }
.contact { display: inline-flex; align-items: center; min-height: 48px; margin-top: 8px; padding: 0 20px; border-radius: 999px; background: var(--accent); color: var(--card); font-weight: 680; text-decoration: none; }
footer { color: var(--muted); font-size: 13px; padding: 22px 6px 0; }
@media (max-width: 520px) {
  .shell { width: min(100% - 20px, 760px); padding-top: 18px; }
  nav { margin: 0 8px 28px; }
  main { border-radius: 22px; }
  .navlinks { gap: 13px; }
}