:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-subtle: #f5f8fc;
  --surface: #f3f6fa;
  --text: #1b2430;
  --muted: #4a5668;
  --border: #d5dde8;
  --blue: #306998;
  --blue-strong: #255077;
  --yellow: #ffd43b;
  --purple: #9945ff;
  --mint: #14f195;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
.tools-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  padding: 14px 20px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}
/* The brand mark styles live in site.css (`nav .mark`). */
header p { margin: 0; color: var(--muted); flex: 1; }
.tools { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
button, select { font: inherit; }
button {
  background: var(--blue);
  color: #fff;
  border: 0;
  border-radius: 6px;
  padding: 8px 12px;
}
button:focus-visible, select:focus-visible {
  outline: 2px solid var(--blue-strong);
  outline-offset: 2px;
}
button.quiet { background: #fff; color: var(--blue); border: 1px solid var(--border); }
select { padding: 8px; border: 1px solid var(--border); border-radius: 6px; background: #fff; }
.hero {
  padding: 28px 20px 8px;
  background:
    linear-gradient(#fff, #fff) padding-box,
    linear-gradient(90deg, var(--yellow), var(--mint)) border-box;
  border-bottom: 4px solid transparent;
}
.hero h2 { margin: 0 0 8px; font-size: 28px; }
.hero p { margin: 0; max-width: 40rem; color: var(--muted); }
ol.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}
ol.steps li {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-left: 4px solid var(--yellow);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
}
ol.steps strong { color: var(--blue-strong); }
main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 16px 20px 28px;
}
.tabs {
  display: flex;
  gap: 6px;
  align-items: center;
  margin: 0 0 8px;
}
.tab {
  background: #fff;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.tab.on {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
.tab.copy { margin-left: auto; }
section h3 {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
textarea, pre {
  width: 100%;
  min-height: 62vh;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  font-family: ui-monospace, Consolas, monospace;
  font-size: 13px;
  line-height: 1.45;
}
footer {
  padding: 12px 20px 24px;
  color: var(--muted);
  font-size: 13px;
}
@media (max-width: 800px) {
  main, ol.steps { grid-template-columns: 1fr; }
}