:root {
  --bg: #0f1115;
  --panel: #171a21;
  --line: #262b35;
  --text: #e6e8ec;
  --muted: #9aa2b1;
  --accent: #5b8cff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}

h1 { font-size: 1.9rem; margin: 0 0 12px; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }

.lede { color: var(--muted); margin: 0 0 24px; }

section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  margin: 0 0 20px;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin: 14px 0 6px;
}

input[type="text"], input[type="email"], input:not([type]) {
  width: 100%;
  padding: 10px 12px;
  background: #0d0f14;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
}

input[type="range"] { width: 100%; }

.prompt {
  margin: 0;
  padding: 10px 12px;
  background: #0d0f14;
  border: 1px dashed var(--line);
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9rem;
}

button {
  margin-top: 16px;
  padding: 10px 18px;
  background: var(--accent);
  border: 0;
  border-radius: 6px;
  color: #fff;
  font: inherit;
  cursor: pointer;
}

button:disabled { background: #333a48; color: var(--muted); cursor: not-allowed; }

.status { color: var(--muted); font-size: 0.9rem; min-height: 1.4em; margin: 14px 0 0; }

dl { display: grid; grid-template-columns: 140px 1fr; gap: 6px 12px; margin: 0; }
dt { color: var(--muted); font-size: 0.85rem; }
dd { margin: 0; }

ol { margin: 0; padding-left: 22px; }
ol li { padding: 4px 0; }