:root {
/* Responsive logo container */
.logo-container img {
  max-width: 100%;
  height: auto;
  width: 320px;
  max-height: 100px;
}
  --bg: #f6f7f9;
  --card: #ffffff;
  --muted: #6b7280;
  --primary: #0b5bd3;
  --border: #e5e7eb;
  --radius: 14px;
  --maxw: 920px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; background: var(--bg); color: #111827; line-height: 1.6; }

.wrap { max-width: var(--maxw); margin: 40px auto; padding: 0 16px; }
@media (max-width: 480px) {
  .wrap {
    padding: 0 6px;
    margin: 16px auto;
  }
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
  padding: 20px;
}

.card.light { background: #fcfcfd; }

.card-header h1 { margin: 0 0 6px; }
.lead { margin: 0; color: var(--muted); }

.notice {
  margin: 16px 0;
  background: #f7faff;
  border: 1px solid #dfeaff;
  border-radius: 10px;
  padding: 12px 14px;
}

.grid.two {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 720px) {
  .grid.two { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .grid.two {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}
@media (min-width: 720px) {
  .grid.two { grid-template-columns: 1fr 1fr; }
}

.list { margin: 0; padding-left: 18px; }
.list li { margin: 4px 0; }

.kv { display: grid; grid-template-columns: 160px 1fr; gap: 8px 12px; margin: 0; }
@media (max-width: 600px) {
  .kv {
    grid-template-columns: 1fr;
    gap: 4px 0;
  }
  .kv dt {
    margin-bottom: 2px;
  }
}
.kv dt { font-weight: 600; }
.kv dd { margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace; }

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
button {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  background: #fff;
  cursor: pointer;
  font-weight: 600;
}
button:hover { border-color: #cfd7e3; }
#printBtn { background: var(--primary); color: #fff; border-color: #0a4db3; }

.card-footer { margin-top: 8px; color: var(--muted); }

.faq { margin-top: 20px; }
details { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 14px; margin: 10px 0; }

.screenshot-area {
  border-width: 2px;
  padding: 24px;
}