body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 64px;
  line-height: 1.75;
  color: #111;
  background: #fff;
}

nav {
  margin-bottom: 28px;
  font-size: 14px;
}

nav a {
  margin-right: 14px;
  color: #444;
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

main {
  margin-top: 20px;
}

h1, h2, h3 {
  margin-top: 28px;
  margin-bottom: 12px;
  line-height: 1.3;
}

pre {
  overflow-x: auto;
  padding: 14px;
  background: #f6f6f6;
  border-radius: 6px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.95em;
}

article {
  margin-top: 16px;
}

input[type="checkbox"] {
  cursor: pointer;
}

.panel {
  margin: 16px 0;
  padding: 14px;
  border: 1px solid #e9e9e9;
  border-radius: 8px;
  background: #fcfcfc;
}

label {
  display: block;
  margin: 8px 0 6px;
}

select,
textarea,
button {
  width: 100%;
  box-sizing: border-box;
  font: inherit;
}

select,
textarea {
  border: 1px solid #d6d6d6;
  border-radius: 6px;
  padding: 10px 12px;
  background: #fff;
}

button {
  border: 0;
  border-radius: 8px;
  padding: 11px 14px;
  background: #111;
  color: #fff;
  cursor: pointer;
}

button:hover {
  opacity: 0.92;
}

.muted {
  color: #666;
  font-size: 14px;
}

.action-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  width: auto;
  min-width: 0;
  padding: 6px 10px;
  border: 1px solid #d0d0d0;
  border-radius: 6px;
  background: #efefef;
  color: #333;
  line-height: 1;
}

.icon-btn:hover {
  opacity: 1;
  background: #e8e8e8;
}