:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e8eef5;
  --muted: #8b9bb0;
  --accent: #3d8bfd;
  --danger: #e35d6a;
  --ok: #3dd68c;
}
* { box-sizing: border-box; }
body {
  margin: 0 auto;
  max-width: 720px;
  padding: 1.5rem;
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}
h1 { font-size: 1.4rem; margin: 0 0 0.25rem; }
h2 { font-size: 1.1rem; margin: 0 0 0.75rem; }
.muted, .hint { color: var(--muted); font-size: 0.9rem; }
.card {
  background: var(--card);
  border-radius: 10px;
  padding: 1rem 1.1rem;
  margin: 1rem 0;
}
label { display: block; margin: 0.5rem 0; font-size: 0.9rem; }
input, textarea {
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.45rem 0.6rem;
  border-radius: 6px;
  border: 1px solid #2a3a4f;
  background: #0f1419;
  color: var(--text);
}
input[type="checkbox"] { width: auto; }
button, #btnDl {
  margin: 0.4rem 0.4rem 0 0;
  padding: 0.45rem 0.9rem;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  font-size: 0.9rem;
}
button:disabled { opacity: 0.45; cursor: not-allowed; }
pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.85rem;
  margin: 0;
}
.device-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid #2a3a4f;
  font-size: 0.85rem;
}
.device-row button { background: var(--danger); }
footer { margin-top: 2rem; font-size: 0.85rem; color: var(--muted); }
footer a { color: var(--accent); }
code { color: var(--ok); }