:root {
  --bg: #ffffff;
  --fg: #0f172a;
  --muted: #475569;
  --muted-2: #64748b;
  --border: #e2e8f0;
  --accent: #2563eb;
  --accent-tint: #dbeafe;
  --code-bg: #0b1220;
  --code-fg: #e2e8f0;
  --card-bg: #f8fafc;
  --max: 960px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --fg: #e2e8f0;
    --muted: #94a3b8;
    --muted-2: #64748b;
    --border: #1e293b;
    --accent: #60a5fa;
    --accent-tint: #1e3a8a33;
    --code-bg: #020617;
    --card-bg: #0f172a;
  }
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, Roboto, 'Helvetica Neue', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre {
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.2rem 1.25rem 0;
}
nav .brand { font-weight: 600; font-size: 1rem; }
nav .nav-links a {
  margin-left: 1.1rem;
  color: var(--muted);
  font-size: 0.92rem;
}
nav .nav-links a:hover { color: var(--accent); text-decoration: none; }

.hero {
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse at top, var(--accent-tint) 0%, transparent 60%),
    var(--bg);
}
.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3.5rem 1.25rem 4rem;
  text-align: center;
}
h1 {
  font-size: clamp(1.9rem, 4.5vw, 3.1rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.sub {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto 2.2rem;
}
.sub em { font-style: italic; color: var(--fg); }
.sub.narrow { max-width: 620px; text-align: left; margin-bottom: 1.6rem; }

.install {
  max-width: 680px;
  margin: 0 auto;
}
.install-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  color: var(--muted-2);
  margin-bottom: 0.45rem;
}
.install pre {
  position: relative;
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 1.05rem 1.2rem;
  padding-right: 4.5rem;
  border-radius: 10px;
  margin: 0;
  overflow-x: auto;
  text-align: left;
  box-shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.35);
}
.install pre code { white-space: pre; }
button.copy {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: #ffffff18;
  color: var(--code-fg);
  border: 1px solid #ffffff30;
  border-radius: 6px;
  padding: 0.35rem 0.7rem;
  font-size: 0.78rem;
  cursor: pointer;
  transition: background 0.15s ease;
}
button.copy:hover { background: #ffffff28; }
.install-fallback {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.75rem;
  line-height: 1.45;
}
.install-fallback code { font-size: 0.82rem; }
.install-badges {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
}
.badge {
  background: var(--accent-tint);
  color: var(--accent);
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
}

main { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }
section.how {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--border);
}
section.how:last-of-type { border-bottom: none; }
h2 {
  font-size: 1.45rem;
  letter-spacing: -0.01em;
  margin: 0 0 1.2rem;
}
h3 {
  font-size: 1.02rem;
  margin: 0 0 0.3rem;
}
ol.timeline {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
}
ol.timeline > li {
  counter-increment: step;
  position: relative;
  padding: 0.25rem 0 1.2rem 2.4rem;
  border-left: 2px solid var(--border);
  margin-left: 0.8rem;
}
ol.timeline > li:last-child { padding-bottom: 0; }
ol.timeline > li::before {
  content: counter(step);
  position: absolute;
  left: -0.95rem;
  top: 0;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  font-weight: 600;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
ol.timeline strong { font-weight: 600; }
ol.timeline code {
  background: var(--card-bg);
  padding: 0.12rem 0.38rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 1.1rem 1.15rem;
  border-radius: 10px;
}
.card h3 { color: var(--accent); }
.card p { color: var(--muted); font-size: 0.93rem; margin: 0; }

details {
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.55rem;
  background: var(--card-bg);
}
details summary {
  cursor: pointer;
  font-weight: 500;
  list-style: revert;
}
details p {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.93rem;
}
details code {
  background: var(--bg);
  padding: 0.12rem 0.38rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  font-size: 0.82em;
}

footer {
  padding: 2rem 0 3rem;
  text-align: center;
  color: var(--muted-2);
  font-size: 0.88rem;
}

/* Narrow screens */
@media (max-width: 640px) {
  nav .nav-links a { margin-left: 0.7rem; font-size: 0.88rem; }
  nav .nav-links a:first-child { display: none; }
  .hero-inner { padding: 2.5rem 1rem 3rem; }
  .install pre { font-size: 0.82rem; padding-right: 4rem; }
  .install-fallback code { font-size: 0.76rem; word-break: break-all; }
}