:root {
  --ink: #142033;
  --muted: #5b677a;
  --line: #d9e0ea;
  --paper: #f6f8fb;
  --card: #fff;
  --accent: #1f4ea8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  background: var(--paper);
}

.masthead {
  background: #0f1b2d;
  color: #fff;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}

.masthead h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 0.04em;
}

.masthead p {
  margin: 0;
  font-family: system-ui, sans-serif;
  font-size: 13px;
  opacity: 0.8;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 28px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 64px;
}

article h2 { margin-top: 0; }

article h3 {
  margin: 0 0 8px;
  font-size: 1.15em;
}

article time {
  font-family: system-ui, sans-serif;
  font-size: 12px;
  color: var(--muted);
}

article p {
  line-height: 1.55;
  color: #243049;
}

.placement {
  background: var(--card);
  border: 1px dashed var(--line);
  padding: 12px;
  margin: 20px 0;
}

.placement-label {
  font-family: system-ui, sans-serif;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 8px;
}

.ad-slot {
  margin: 0 auto;
  background: #eef2f7;
}

.panel {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  padding: 16px;
  position: sticky;
  top: 16px;
}

.panel h2 {
  font-family: system-ui, sans-serif;
  font-size: 14px;
  margin: 0 0 12px;
}

.config-panel {
  display: grid;
  gap: 12px;
  margin: 20px 0;
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--card);
  font-family: system-ui, sans-serif;
}

.config-panel h3 {
  margin: 0;
}

.config-panel label:not(.checkbox-label) {
  display: grid;
  gap: 4px;
}

.config-panel input {
  min-width: 0;
  padding: 7px 9px;
  border: 1px solid #aeb8c7;
  border-radius: 3px;
  font: inherit;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
}

.config-panel button {
  justify-self: start;
}

.config-panel .config-note {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.panel dt {
  color: var(--muted);
  margin-top: 10px;
}

.panel dd {
  margin: 4px 0 0;
  word-break: break-all;
}

.status-ok { color: #0f7a43; }
.status-warn { color: #9a6700; }
.status-bad { color: #b42318; }

.banner {
  font-family: system-ui, sans-serif;
  font-size: 13px;
  padding: 10px 20px;
  background: #fff6d6;
  border-bottom: 1px solid #ead889;
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .panel { position: static; }
}