:root {
  --bg: #0b0d12;
  --fg: #e6ebf3;
  --muted: #9aa4b2;
  --brand-1: #3aa0ff;
  --brand-2: #2ed0c0;
  --card: #12161f;
  --border: #1e2430;
  --btn: #1f6feb;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--fg);
  background: linear-gradient(180deg, #0b0d12 0%, #0e1117 100%);
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

.site-header {
  position: sticky; top: 0; z-index: 10;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  background: rgba(11, 13, 18, 0.7);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px;
}
.logo { height: 36px; }
.nav a { color: var(--fg); text-decoration: none; margin-left: 16px; opacity: .9; }
.nav a:hover { opacity: 1; }

.hero { padding: 64px 0 40px; text-align: left; }
.hero h1 { font-size: 40px; margin: 0 0 12px; letter-spacing: .2px; }
.subtitle { color: var(--muted); margin: 0 0 20px; font-size: 16px; }
.cta { display: flex; gap: 12px; }
.btn { background: var(--btn); color: white; text-decoration: none; padding: 10px 14px; border-radius: 8px; font-weight: 600; }
.btn-secondary { background: transparent; border: 1px solid var(--border); }

.usage { padding: 28px 0 8px; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.card h3 { margin-top: 0; }
.card ul { margin: 8px 0 0 18px; color: var(--fg); }
.card li { margin: 6px 0; }

.commands { padding: 24px 0 64px; }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.code { background: #0b0f17; border: 1px solid var(--border); border-radius: 10px; padding: 12px; overflow: auto; line-height: 1.45; }

.site-footer { border-top: 1px solid var(--border); padding: 20px 0; color: var(--muted); }
.site-footer .container { display: flex; gap: 10px; align-items: center; }
.site-footer .sep { opacity: .4; }

@media (max-width: 900px) {
  .cards { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .hero { text-align: left; }
}