:root {
  --bg: #fafafa;
  --card: #ffffff;
  --text: #18181b;
  --muted: #52525b;
  --line: #e4e4e7;
  --yt: #b91c1c;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.55;
}
a { color: inherit; }
header, footer { background: var(--card); border-color: var(--line); }
header { border-bottom: 1px solid var(--line); }
footer { border-top: 1px solid var(--line); margin-top: auto; }
.wrap { width: min(720px, calc(100% - 32px)); margin: 0 auto; }
.bar { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; padding: 12px 0; }
.brand { font-weight: 650; text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: 12px; font-size: 14px; color: var(--muted); }
nav a { text-decoration: none; }
nav a:hover, footer a:hover { color: var(--text); }
main { padding: 28px 0 48px; }
.kicker { margin: 0; font-size: 12px; font-weight: 650; letter-spacing: 0.06em; text-transform: uppercase; color: var(--yt); }
h1 { margin: 6px 0 12px; font-size: 28px; font-weight: 650; }
h2 { margin: 24px 0 8px; font-size: 16px; }
p, li { font-size: 15px; color: #27272a; }
.muted { color: var(--muted); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  margin: 16px 0;
}
.links { font-size: 15px; }
.links a { font-weight: 600; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; padding: 16px 0; font-size: 12px; color: var(--muted); }
footer nav { gap: 12px; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.meta { font-size: 13px; color: var(--muted); }
label.block { display: block; margin: 14px 0; }
input[type="text"], textarea {
  width: 100%;
  margin-top: 6px;
  padding: 8px 10px;
  border: 1px solid #d4d4d8;
  border-radius: 8px;
  font: inherit;
}
.radio { display: flex; gap: 8px; align-items: flex-start; margin: 8px 0; font-size: 14px; }
.note { font-size: 13px; color: var(--muted); }
.btn {
  display: inline-block;
  margin-top: 8px;
  padding: 8px 12px;
  border: 0;
  border-radius: 8px;
  background: #18181b;
  color: #fff;
  font: inherit;
  cursor: pointer;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }