:root {
  --bg: #0f1c17;
  --panel: #173028;
  --text: #e8f2ec;
  --muted: #9bb5a8;
  --accent: #6bcf8e;
  --line: #2a463b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #1d3a2e, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
}
main { max-width: 720px; margin: 0 auto; padding: 48px 20px 80px; }
.eyebrow { letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); font-size: 12px; }
h1 { font-size: 40px; margin: 8px 0; }
.lede, .muted, .foot { color: var(--muted); }
.panel {
  margin-top: 24px;
  padding: 20px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 90%, black);
}
button {
  background: var(--accent);
  color: #062015;
  border: 0;
  padding: 10px 16px;
  font-weight: 700;
  cursor: pointer;
}
button[hidden] { display: none; }
pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: #0b1511;
  padding: 16px;
  border: 1px solid var(--line);
}