:root {
  --fg: #111;
  --muted: #666;
  --line: #ddd;
  --bg: #fff;
  --code-bg: #f6f6f6;
  --link: #111;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: Georgia, "Times New Roman", Times, serif;
  line-height: 1.65;
  font-size: 18px;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 20px 64px;
}

h1, h2, h3 {
  font-weight: 600;
  margin: 0 0 10px;
}

h1 {
  font-size: 40px;
  line-height: 1.15;
  margin: 0 0 14px;
}

h2 {
  font-size: 24px;
  margin: 42px 0 12px;
}

h3 {
  font-size: 20px;
  margin: 24px 0 10px;
}

p, ul, table, pre {
  margin: 0 0 16px;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 34px 0;
}

.small {
  color: var(--muted);
  font-size: 15px;
}

.muted {
  color: var(--muted);
}

.mono {
  font-family: "Courier New", Courier, monospace;
  font-size: 14px;
  word-break: break-word;
}

.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 15px;
  margin: 0 0 42px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.nav a {
  white-space: nowrap;
}

.kv {
  margin: 0 0 20px;
}

.kv div {
  margin: 4px 0;
}

.loading {
  color: var(--muted);
  font-style: italic;
}

.error {
  color: #800;
  font-weight: 600;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

th, td {
  text-align: left;
  vertical-align: top;
  border-top: 1px solid var(--line);
  padding: 8px 8px 8px 0;
  font-size: 16px;
}

th {
  font-weight: 600;
}

.section-note,
.note,
.hint {
  color: var(--muted);
  font-size: 15px;
}

.section-note,
.note {
  margin-top: -2px;
  margin-bottom: 10px;
}

.domain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.domain-box,
.box {
  border: 1px solid var(--line);
  padding: 12px;
}

.domain-box ul {
  margin: 10px 0 0 18px;
  padding: 0;
}

.domain-box li {
  margin: 4px 0;
}

.domain-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
}

.controls {
  margin: 12px 0 16px;
}

input[type="text"],
select {
  width: 100%;
  box-sizing: border-box;
  font-family: "Courier New", Courier, monospace;
  font-size: 14px;
  padding: 8px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--fg);
}

select {
  width: auto;
  font-family: inherit;
  font-size: 16px;
}

td:nth-child(3),
td:nth-child(4),
td:nth-child(5) {
  text-align: right;
}


button {
  font-family: inherit;
  font-size: 16px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--fg);
  cursor: pointer;
  margin-right: 8px;
}

button:disabled {
  opacity: 0.4;
  cursor: default;
}

.pager {
  margin-top: 14px;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.footer {
  margin-top: 46px;
  color: var(--muted);
  font-size: 15px;
}