:root {
  --bg: #0b1120;
  --surface: #111827;
  --surface-light: #172033;
  --border: #263247;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --primary: #4cc2ff;
  --green: #7cd9a5;
  --white: #ffffff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.75;
}
.container { width: min(900px, calc(100% - 40px)); margin: 0 auto; }
header {
  padding: 70px 0 35px;
  border-bottom: 1px solid var(--border);
}
header h1 { color: var(--white); font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.15; margin: 0; }
article { padding: 45px 0 80px; }
article h2 { color: var(--white); margin-top: 2.2em; line-height: 1.3; }
article h3 { color: var(--white); margin-top: 2em; }
article p, article li { color: var(--text); }
article a { color: var(--primary); }
article blockquote {
  margin: 25px 0;
  padding: 10px 20px;
  border-left: 3px solid var(--primary);
  background: rgba(76,194,255,.04);
  color: var(--muted);
}
article blockquote p { color: var(--muted); margin: 7px 0; }
article img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 30px auto;
  border-radius: 10px;
}
article pre {
  overflow-x: auto;
  padding: 20px;
  background: #080d18;
  border: 1px solid var(--border);
  border-radius: 8px;
}
article code {
  padding: 2px 5px;
  border-radius: 4px;
  background: rgba(255,255,255,.06);
  color: var(--green);
  font-family: Consolas, Monaco, monospace;
}
article pre code { padding: 0; background: transparent; color: var(--text); }
article table { width: 100%; border-collapse: collapse; margin: 25px 0; }
article th, article td { padding: 10px 12px; border: 1px solid var(--border); text-align: left; }
article th { color: var(--white); background: var(--surface-light); }
article hr { border: 0; border-top: 1px solid var(--border); margin: 45px 0; }
.back {
  display: inline-block;
  margin-top: 25px;
  color: var(--muted);
}
.back:hover { color: var(--primary); }
.share { margin-top: 60px; padding-top: 30px; border-top: 1px solid var(--border); }
.share a { margin-right: 10px; }
@media (max-width: 600px) {
  .container { width: min(100% - 28px, 900px); }
  article { padding-top: 30px; }
}