:root {
  --bg: #fbfbfa;
  --fg: #17181c;
  --muted: #6b6f76;
  --line: #e3e3df;
  --accent: #1f5eff;
  --ok: #0f7b3f;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans",
        "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 960px;
  margin: 0 auto;
  padding: 22px 24px;
  border-bottom: 1px solid var(--line);
}

.brand { font-weight: 600; letter-spacing: -0.01em; color: var(--fg); }
.nav nav a { margin-left: 22px; color: var(--muted); font-size: 14px; }
.nav nav a:hover, .nav nav a.active { color: var(--fg); text-decoration: none; }

main { max-width: 960px; margin: 0 auto; padding: 56px 24px 72px; }

h1 { font-size: 36px; line-height: 1.18; letter-spacing: -0.022em; margin: 0 0 14px; }
h2 { font-size: 18px; margin: 40px 0 12px; letter-spacing: -0.01em; }

.lede { color: var(--muted); font-size: 17px; max-width: 560px; margin: 0 0 18px; }

/* hero */
.hero { padding-bottom: 12px; }
.split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: start;
  padding: 8px 0 20px;
}
@media (max-width: 760px) { .split { grid-template-columns: 1fr; gap: 24px; } }

.hero-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  background: #fff;
}
.hero-card pre { margin: 8px 0 12px; }
.label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.pills { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; }
.pill {
  font: 12px/1 var(--mono);
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
}

/* steps */
.steps ol { counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps li {
  counter-increment: step;
  position: relative;
  padding: 0 0 22px 46px;
  border-left: 1px solid var(--line);
  margin-left: 13px;
  max-width: 660px;
}
.steps li:last-child { border-left-color: transparent; padding-bottom: 0; }
.steps li::before {
  content: counter(step);
  position: absolute;
  left: -13px;
  top: -2px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--line);
  font: 600 12px/24px var(--mono);
  text-align: center;
  color: var(--muted);
}
.steps strong { display: block; margin-bottom: 2px; }

/* cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 40px 0 8px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 20px;
  background: #fff;
}
.card h2 {
  margin: 0 0 8px;
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.card p { margin: 4px 0; }

/* prose */
.prose { max-width: 720px; }
.prose p { color: #2b2d33; }

/* faq */
.faq { max-width: 720px; }
.faq details {
  border-top: 1px solid var(--line);
  padding: 14px 0;
}
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer;
  font-weight: 500;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "+ "; color: var(--muted); font-family: var(--mono); }
.faq details[open] summary::before { content: "− "; }
.faq details p { margin: 8px 0 0; color: #4a4d55; }

pre {
  background: #101114;
  color: #e8e8e4;
  padding: 16px 18px;
  border-radius: 8px;
  overflow-x: auto;
  font: 13px/1.6 var(--mono);
  margin: 20px 0;
}

code { font-family: var(--mono); font-size: 0.92em; }
p code, td code { background: #f0f0ec; padding: 1px 5px; border-radius: 4px; }
pre code { background: none; padding: 0; }

.muted { color: var(--muted); font-size: 14px; }
.ok { color: var(--ok); font-weight: 600; }

table { border-collapse: collapse; width: 100%; margin: 18px 0; font-size: 14px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); }
th {
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 26px 24px 60px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 13px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0f12; --fg: #ececea; --muted: #9a9ea6; --line: #24262b;
    --accent: #6f9bff; --ok: #4cc27e;
  }
  .card, .hero-card { background: #14161a; }
  .prose p { color: #c9ccd2; }
  .faq details p { color: #a8adb6; }
  p code, td code { background: #1c1f24; }
  .steps li::before { background: #0e0f12; }
}