:root {
  --blue-bright: #0090fc;
  --blue-deep: #0a2e6e;
  --ink: #0f1720;
  --paper: #ffffff;
  --muted: #5a6472;
  --line: #e7eaee;
  --card: #f7f9fb;
  --radius: 14px;
  --max: 880px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}

a { color: var(--blue-bright); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

header.site {
  background: linear-gradient(135deg, var(--blue-bright), var(--blue-deep));
  color: #fff;
  padding: 64px 0 56px;
}

header.site .wrap { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 18px; }
header.site img.mark { height: 96px; width: auto; }
header.site h1 { font-size: 40px; margin: 0; letter-spacing: 0.01em; }
header.site p.tagline { margin: 0; font-size: 18px; color: rgba(255,255,255,0.88); max-width: 520px; }

nav.site {
  display: flex; gap: 22px; margin-top: 6px; font-size: 14px; font-weight: 600;
}
nav.site a { color: rgba(255,255,255,0.85); }
nav.site a:hover { color: #fff; }

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 8px; }
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 999px; font-weight: 700;
  font-size: 15px;
}
.btn-primary { background: #fff; color: var(--blue-deep); }
.btn-primary:hover { background: #eef4ff; text-decoration: none; }
.btn-ghost { border: 1.5px solid rgba(255,255,255,0.55); color: #fff; }
.btn-ghost:hover { border-color: #fff; text-decoration: none; }

main { padding: 56px 0 40px; }

section { margin-bottom: 52px; }
section h2 { font-size: 24px; margin: 0 0 14px; }
section h3 { font-size: 17px; margin: 22px 0 8px; }
section p { color: var(--ink); }
.lede { font-size: 17px; color: var(--muted); max-width: 640px; }

.grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px; margin-top: 20px;
}
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px;
}
.card h3 { margin-top: 0; font-size: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }

.badge {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700;
  color: var(--blue-deep); background: #eaf3ff; border-radius: 999px; padding: 6px 14px;
}

ol.steps { padding-left: 22px; }
ol.steps li { margin-bottom: 10px; }

code, pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13.5px;
}
pre {
  background: #0f1720; color: #e7eaee; padding: 14px 16px; border-radius: 10px;
  overflow-x: auto;
}
code.inline {
  background: var(--card); border: 1px solid var(--line); border-radius: 6px;
  padding: 2px 6px;
}

.callout {
  border-left: 4px solid var(--blue-bright); background: var(--card);
  border-radius: 0 var(--radius) var(--radius) 0; padding: 16px 20px;
}
.callout.warn { border-left-color: #d97706; }

footer.site {
  border-top: 1px solid var(--line); padding: 28px 0 40px;
  color: var(--muted); font-size: 13.5px;
}
footer.site .wrap {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px;
}
footer.site .credit { display: flex; align-items: center; gap: 8px; }
footer.site .credit img { height: 16px; width: auto; }
footer.site .links { display: flex; gap: 16px; }

.wordmark-fallback {
  font-weight: 800; letter-spacing: -0.01em; color: var(--ink); font-size: 14px;
}

@media (prefers-color-scheme: dark) {
  :root { --line: #232a33; --card: #11161d; --muted: #9aa4b2; --ink: #e7eaee; }
  html, body { background: #0b0f14; }
  code.inline { background: #11161d; border-color: #232a33; color: #e7eaee; }
  footer.site { border-top-color: #232a33; }
  .wordmark-fallback { color: #e7eaee; }
  .badge { background: #0f2540; color: #bcdcff; }
  .callout { background: #11161d; }
}

@media (max-width: 560px) {
  header.site h1 { font-size: 30px; }
  header.site img.mark { height: 72px; }
}