* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0e1116;
  color: #c9d1d9;
  line-height: 1.7;
  padding: 40px 20px;
}
.container {
  max-width: 860px;
  margin: 0 auto;
  background: #161b22;
  padding: 50px;
  border-radius: 12px;
  border: 1px solid #30363d;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
h1 {
  color: #e3ff00;
  font-size: 2.2em;
  margin-bottom: 8px;
  border-bottom: 2px solid #30363d;
  padding-bottom: 16px;
}
h2 {
  color: #fff;
  font-size: 1.4em;
  margin-top: 36px;
  margin-bottom: 12px;
}
p, li { color: #c9d1d9; margin-bottom: 12px; }
ul { margin-left: 28px; margin-bottom: 16px; }
a { color: #58a6ff; text-decoration: none; }
a:hover { text-decoration: underline; }
.meta {
  color: #8b949e;
  font-size: 0.9em;
  margin-bottom: 30px;
}
.highlight {
  background: #1f2937;
  border-left: 4px solid #e3ff00;
  padding: 14px 20px;
  margin: 20px 0;
  border-radius: 0 6px 6px 0;
}
.footer {
  margin-top: 50px;
  padding-top: 24px;
  border-top: 1px solid #30363d;
  color: #8b949e;
  font-size: 0.85em;
  text-align: center;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 0.95em;
}
th, td {
  border: 1px solid #30363d;
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
}
th { background: #1f2937; color: #fff; }
code {
  background: #1f2937;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  color: #e3ff00;
}
.cards { display: grid; gap: 14px; margin-top: 24px; }
.card {
  display: block;
  background: #1f2937;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 18px 22px;
  text-decoration: none;
}
.card:hover { border-color: #e3ff00; text-decoration: none; }
.card strong { color: #e3ff00; font-size: 1.1em; display: block; margin-bottom: 4px; }
.card span { color: #8b949e; font-size: 0.9em; }
.back { display: inline-block; margin-bottom: 20px; color: #8b949e; font-size: 0.9em; }
@media (max-width: 600px) {
  .container { padding: 30px 22px; }
  h1 { font-size: 1.7em; }
  table { font-size: 0.85em; }
  th, td { padding: 8px; }
}