body {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, "Courier New", monospace;
  font-size: 14px;
  line-height: 1.8;
  color: #c9d1d9;
  background: #0d1117;
  margin: 0;
  padding: 0;
}
.file-bar {
  background: #161b22;
  border-bottom: 1px solid #30363d;
  padding: 8px 16px;
  color: #484f58;
  font-size: 12px;
  position: sticky;
  top: 0;
}
.file-bar span { color: #8b949e; }
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}
.line {
  display: flex;
  gap: 0;
}
.ln {
  color: #30363d;
  text-align: right;
  width: 3ch;
  flex-shrink: 0;
  user-select: none;
  padding-right: 1.5ch;
  border-right: 1px solid #21262d;
  margin-right: 1.5ch;
}
.lc {
  flex: 1;
  min-width: 0;
}
.lc.empty {
  height: 1.8em;
}
.h1 { color: #58a6ff; }
.h2 { color: #58a6ff; }
.h3 { color: #58a6ff; }
.sym { color: #484f58; }
.txt { color: #c9d1d9; }
.dim { color: #8b949e; }
.url { color: #484f58; }
a {
  color: #58a6ff;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
::selection {
  background: #58a6ff;
  color: #0d1117;
}
@media (max-width: 480px) {
  .ln { width: 2ch; }
}