:root {
  --paper: #fbfaf7;
  --ink: #17171a;
  --ink-2: #5c5c63;
  --rule: #d9d6cf;
}

* { box-sizing: border-box; }

html, body {
  overflow-x: clip;
}

body {
  margin: 0;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 48px 24px;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

main {
  width: 100%;
  max-width: 620px;
}

.mark {
  margin: 0 0 40px;
  font-size: 13px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

h1 {
  margin: 0 0 40px;
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.01em;
  overflow-wrap: break-word;
  min-width: 0;
}

.tools {
  margin: 0 0 40px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rule);
}

.tools li {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 16px;
}

.n {
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--ink-2);
}

.note {
  margin: 0;
  font-size: 14px;
  color: var(--ink-2);
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}