:root {
  --bg: #ffffff;
  --fg: #16181d;
  --muted: #5b6470;
  --accent: #c2410c;
  --card: #f6f7f8;
  --border: #e5e7eb;
  --max: 720px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101216;
    --fg: #eceef1;
    --muted: #9aa3ad;
    --accent: #fb923c;
    --card: #1a1d23;
    --border: #2a2e36;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  font-size: 16.5px;
}
header, main, footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  padding-bottom: 8px;
}
.logo {
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
  color: var(--fg);
  letter-spacing: -0.01em;
}
.logo span { color: var(--accent); }
nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  font-size: 15px;
}
nav a:hover { color: var(--fg); }
main { padding-top: 40px; padding-bottom: 80px; }
h1 { font-size: 34px; letter-spacing: -0.02em; line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 21px; margin: 36px 0 8px; letter-spacing: -0.01em; }
p.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; }
a { color: var(--accent); }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px 26px;
  margin: 28px 0;
}
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0 0 12px; color: var(--muted); }
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 15px;
}
.tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 99px;
  padding: 2px 10px;
  margin-bottom: 14px;
}
footer {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  padding-bottom: 40px;
  color: var(--muted);
  font-size: 14px;
}
ul { padding-left: 22px; }
li { margin: 6px 0; }
.small { font-size: 14px; color: var(--muted); }