:root {
  --bg: #0c1117;
  --card: #151c24;
  --line: #2a3542;
  --txt: #e8eef4;
  --muted: #93a4b5;
  --acc: #3d9cf0;
  --ok: #7dce8a;
  --warn: #e2b340;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, sans-serif;
  background: var(--bg);
  color: var(--txt);
  line-height: 1.55;
}
a { color: var(--acc); text-decoration: none; }
a:hover { text-decoration: underline; }
header, footer {
  max-width: 880px;
  margin: 0 auto;
  padding: 20px;
}
header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  border-bottom: 1px solid var(--line);
}
nav { display: flex; flex-wrap: wrap; gap: 12px; font-size: 14px; }
main { max-width: 880px; margin: 0 auto; padding: 24px 20px 48px; }
h1 { font-size: 28px; margin: 0 0 8px; }
h2 { font-size: 18px; margin: 28px 0 12px; }
.muted { color: var(--muted); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin: 12px 0;
}
.btn {
  display: inline-block;
  background: var(--acc);
  color: #041018;
  font-weight: 700;
  border-radius: 10px;
  padding: 10px 16px;
  margin: 8px 8px 0 0;
}
.btn:hover { text-decoration: none; }
.btn.secondary { background: transparent; color: var(--txt); border: 1px solid var(--line); }
.chip { font-size: 13px; }
.chip.ok { color: var(--ok); }
.chip.warn { color: var(--warn); }
.item { cursor: pointer; }
.item:hover { border-color: var(--acc); }
pre { white-space: pre-wrap; font-family: inherit; margin: 0; }
footer { border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }