* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: #000;
  color: #fff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}

.nav-brand img { width: 32px; height: 32px; border-radius: 8px; }

.nav-links { display: flex; gap: 24px; }

.nav-links a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

.nav-links a:hover { color: #fff; }

.doc {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}

.doc h1 {
  font-size: clamp(32px, 6vw, 44px);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.doc .updated {
  color: rgba(255,255,255,0.45);
  font-size: 14px;
  margin-bottom: 40px;
}

.doc h2 {
  font-size: 22px;
  margin: 40px 0 12px;
  color: #fff;
}

.doc h3 {
  font-size: 17px;
  margin: 24px 0 8px;
}

.doc p, .doc li {
  color: rgba(255,255,255,0.75);
  font-size: 16px;
}

.doc p { margin-bottom: 16px; }
.doc ul, .doc ol { margin: 0 0 16px 22px; }
.doc li { margin-bottom: 8px; }

.doc a { color: #4da6ff; }

.doc .lead {
  font-size: 18px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
}

.card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 24px 28px;
  margin-bottom: 24px;
}

.card h2 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }

.footer {
  background: #0a0a0a;
  padding: 48px 24px;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 15px;
}

.footer-links a:hover { color: #fff; }
.footer-copyright { color: rgba(255,255,255,0.4); font-size: 14px; }

@media (max-width: 600px) {
  .doc { padding: 40px 20px 64px; }
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 12px; }
  .footer-links { gap: 20px; }
}