:root {
  --bg: #f6f4ef;
  --card: #ffffff;
  --text: #1d1b18;
  --muted: #6b665d;
  --line: #e4e0d6;
  --accent: #d6402b;
  --accent-soft: #fbe7e3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15140f;
    --card: #1f1d18;
    --text: #f1eee6;
    --muted: #a39d90;
    --line: #34312a;
    --accent: #ff6a52;
    --accent-soft: #3a1f1a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 56px 20px 40px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 40px; }
.mark {
  width: 40px; height: 40px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--accent); color: #fff; font-weight: 700; font-size: 20px;
}
.brand { font-weight: 650; font-size: 19px; letter-spacing: -0.01em; }
nav { margin-left: auto; display: flex; gap: 18px; font-size: 15px; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current] { color: var(--text); }
h1 { font-size: clamp(30px, 6vw, 42px); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 16px; }
h2 { font-size: 20px; margin: 36px 0 8px; }
.lede { font-size: 19px; color: var(--muted); margin: 0 0 36px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 24px; margin: 14px 0;
}
.card h3 { margin: 0 0 4px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); }
.steps { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.steps .card { margin: 0; }
.num {
  display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 14px; margin-bottom: 10px;
}
.note { border-left: 3px solid var(--accent); padding: 4px 0 4px 16px; color: var(--muted); margin: 28px 0; }
ul { padding-left: 22px; }
li { margin: 6px 0; }
footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }