:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #16181d;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --card: #181b21;
    --text: #e8eaee;
    --muted: #9aa1ad;
    --border: #2a2e36;
    --accent: #60a5fa;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 32px 16px;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 720px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

header, section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

header { text-align: center; padding: 32px 20px; }

.label {
  margin: 0;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
}

h1 {
  margin: 8px 0;
  font-size: clamp(26px, 6vw, 40px);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  word-break: break-all;
}

h2 { margin: 0 0 12px; font-size: 16px; }

.muted { color: var(--muted); margin: 0; }

button {
  margin-top: 16px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--accent);
  font: inherit;
  cursor: pointer;
}
button:hover { border-color: var(--accent); }

dl { margin: 0; }

.row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 16px;
  padding: 8px 0;
  border-top: 1px solid var(--border);
}
.row:first-child { border-top: 0; }

dt { color: var(--muted); }
dd {
  margin: 0;
  text-align: right;
  font-variant-numeric: tabular-nums;
  word-break: break-word;
  max-width: 100%;
}

footer { font-size: 13px; text-align: center; padding: 8px; }
a { color: var(--accent); }