:root {
  --bg: #faf9f7;
  --text: #1a1a1a;
  --muted: #666;
  --accent: #2563eb;
  --border: #e5e5e5;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, sans-serif; background: var(--bg); color: var(--text); line-height: 1.5; }
.nav { display: flex; justify-content: space-between; align-items: center; padding: 1rem 2rem; border-bottom: 1px solid var(--border); }
.logo { font-weight: 700; text-decoration: none; color: var(--text); }
.nav a { margin-left: 1rem; color: var(--muted); text-decoration: none; }
.container { max-width: 720px; margin: 0 auto; padding: 2rem; }
.container.narrow { max-width: 400px; }
.hero h1 { font-size: 2.5rem; margin-bottom: 0.5rem; }
.lead { font-size: 1.15rem; color: var(--muted); }
.actions { margin: 2rem 0; display: flex; gap: 1rem; flex-wrap: wrap; }
.btn { display: inline-block; padding: 0.6rem 1.2rem; background: var(--accent); color: #fff; border-radius: 6px; text-decoration: none; border: none; cursor: pointer; font-size: 1rem; }
.btn-lg { padding: 0.85rem 1.5rem; font-size: 1.1rem; }
.btn-outline { background: transparent; color: var(--accent); border: 2px solid var(--accent); }
.steps { padding-left: 1.25rem; }
.steps li { margin: 0.5rem 0; }
label { display: block; margin: 1rem 0; }
input { width: 100%; padding: 0.5rem; margin-top: 0.25rem; border: 1px solid var(--border); border-radius: 4px; }
.error { color: #b91c1c; }
.mono, code { font-family: ui-monospace, monospace; background: #eee; padding: 0.2rem 0.4rem; border-radius: 4px; word-break: break-all; }
table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
th, td { text-align: left; padding: 0.5rem; border-bottom: 1px solid var(--border); }
.prompt { background: #f0f0f0; padding: 1rem; overflow-x: auto; font-size: 0.85rem; }
.link-btn { background: none; border: none; color: var(--muted); cursor: pointer; text-decoration: underline; }