:root {
  --bg: #ffffff;
  --surface: #eef4f3;
  --text: #15201e;
  --muted: #5b6b68;
  --accent: #17665e;
  --rule: #dfe6e4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1413;
    --surface: #18211f;
    --text: #e8efed;
    --muted: #9aaba7;
    --accent: #40b39a;
    --rule: #26322f;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}
main { max-width: 680px; margin: 0 auto; padding: 32px 20px 48px; }
header { display: flex; align-items: center; gap: 14px; margin-bottom: 28px; }
header img { width: 52px; height: 52px; border-radius: 12px; }
header a { color: inherit; text-decoration: none; font-weight: 700; font-size: 20px; }
h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 21px; line-height: 1.3; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 24px 0 4px; }
p, ul { margin: 0 0 14px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.summary { background: var(--surface); border-radius: 16px; padding: 18px 20px 6px; margin: 20px 0 8px; }
.summary ul { padding-left: 20px; }
.steps { display: grid; gap: 12px; margin: 24px 0; padding: 0; list-style: none; }
.steps li { background: var(--surface); border-radius: 16px; padding: 16px 18px; margin: 0; }
.steps strong { display: block; }
.lead { font-size: 19px; color: var(--muted); }
.badge { display: inline-block; background: var(--accent); color: #fff; border-radius: 999px; padding: 10px 20px; font-weight: 600; text-decoration: none; }
footer { border-top: 1px solid var(--rule); margin-top: 40px; padding-top: 18px; font-size: 15px; color: var(--muted); }
footer a { margin-right: 16px; }