:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --card: #f9fafb;
  --accent: #4f46e5;
  --accent-fg: #ffffff;
  --code-bg: #0f172a;
  --code-fg: #e2e8f0;
  --ok: #16a34a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1020;
    --fg: #e5e7eb;
    --muted: #9ca3af;
    --line: #1f2937;
    --card: #111827;
    --accent: #818cf8;
    --accent-fg: #0b1020;
    --code-bg: #020617;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 system-ui, -apple-system, 'Segoe UI', sans-serif;
}

a { color: var(--accent); }

header.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: .75rem 1.25rem;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

header.top .brand { font-weight: 700; color: var(--fg); text-decoration: none; margin-right: auto; }
header.top nav { display: flex; gap: 1rem; flex-wrap: wrap; font-size: .92rem; }
header.top nav a { color: var(--muted); text-decoration: none; }
header.top nav a:hover { color: var(--accent); }

main { max-width: 56rem; margin: 0 auto; padding: 0 1.25rem 5rem; }

.hero { padding: 4.5rem 0 2rem; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.25rem); line-height: 1.1; margin: 0 0 1rem; letter-spacing: -.02em; }
.hero p.lead { font-size: 1.2rem; color: var(--muted); max-width: 40rem; }

.badges { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.25rem 0; padding: 0; list-style: none; }
.badges li { padding: .2rem .7rem; border: 1px solid var(--line); border-radius: 999px; font-size: .85rem; color: var(--muted); }

.cta { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.5rem; }
.btn { display: inline-block; padding: .65rem 1.1rem; border-radius: .55rem; font-weight: 600; text-decoration: none; border: 1px solid var(--line); color: var(--fg); }
.btn.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }

section { padding-top: 3rem; }
section h2 { font-size: 1.6rem; margin: 0 0 .75rem; letter-spacing: -.01em; }
section h3 { font-size: 1.1rem; margin: 1.75rem 0 .4rem; }

pre {
  margin: 1rem 0;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: .6rem;
  font: 13.5px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

code { font: .9em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: var(--card); padding: .1em .35em; border-radius: .3em; }
pre code { background: none; padding: 0; font-size: inherit; }

.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); margin-top: 1rem; }
.card { padding: 1rem 1.1rem; background: var(--card); border: 1px solid var(--line); border-radius: .7rem; }
.card h3 { margin: 0 0 .3rem; font-size: 1rem; }
.card p { margin: 0; color: var(--muted); font-size: .94rem; }

table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: .94rem; }
th, td { text-align: left; padding: .55rem .7rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }

.note { padding: .8rem 1rem; border-left: 3px solid var(--accent); background: var(--card); border-radius: 0 .5rem .5rem 0; margin: 1rem 0; }

footer { max-width: 56rem; margin: 0 auto; padding: 2rem 1.25rem 3rem; color: var(--muted); border-top: 1px solid var(--line); font-size: .9rem; }