:root {
  --bg: #ffffff;
  --surface: #f2f7fd;
  --text: #13202e;
  --muted: #4a5a6b;
  --link: #0a64bd;
  --brand: #208aef;
  --brand-ink: #ffffff;
  --border: #d6e2ee;
  --max: 46rem;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c1825;
    --surface: #132536;
    --text: #e8f0f8;
    --muted: #a9bacb;
    --link: #79bdff;
    --brand: #2f93f0;
    --brand-ink: #06121e;
    --border: #22394f;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1.0625rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--link); text-underline-offset: 0.15em; }
a:focus-visible { outline: 3px solid var(--link); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--bg); padding: 0.5rem 1rem; z-index: 2; }

header.site, footer.site, main { max-width: var(--max); margin: 0 auto; padding: 0 1rem; }
header.site {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding-top: 1.25rem; padding-bottom: 1.25rem; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 0.6rem; font-weight: 700; font-size: 1.2rem; color: var(--text); text-decoration: none; }
.brand img { width: 40px; height: 40px; border-radius: 10px; }
nav.site { display: flex; gap: 1.1rem; flex-wrap: wrap; }
nav.site a { padding: 0.6rem 0; min-height: 44px; display: inline-flex; align-items: center; }

.hero { text-align: center; padding: 2.5rem 0 2rem; }
.hero img { width: 112px; height: 112px; border-radius: 26px; box-shadow: 0 10px 30px rgb(32 138 239 / 0.35); }
.hero h1 { font-size: clamp(2rem, 6vw, 2.8rem); line-height: 1.15; margin: 1.25rem 0 0.75rem; letter-spacing: -0.02em; }
.hero p.lede { font-size: 1.2rem; color: var(--muted); margin: 0 auto; max-width: 34rem; }
.badge {
  display: inline-block; margin-top: 1.5rem; padding: 0.7rem 1.25rem; border-radius: 999px;
  background: var(--link); color: var(--brand-ink); font-weight: 600;
}
.features { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); margin: 2rem 0; }
.features section { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 1.1rem 1.25rem; }
.features h2 { font-size: 1.1rem; margin: 0 0 0.35rem; }
.features p { margin: 0; color: var(--muted); }
.callout { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 1.25rem; margin: 2rem 0; }
.callout h2 { margin-top: 0; font-size: 1.2rem; }

article h1 { font-size: 2rem; line-height: 1.2; margin: 1.5rem 0 0.5rem; }
article h2 { font-size: 1.3rem; margin-top: 2rem; }
article .meta { color: var(--muted); margin-top: 0; }
.note { border-left: 4px solid var(--brand); background: var(--surface); padding: 0.75rem 1rem; border-radius: 0 10px 10px 0; }

footer.site { border-top: 1px solid var(--border); margin-top: 3rem; padding-top: 1.25rem; padding-bottom: 2rem; color: var(--muted); font-size: 0.95rem; }
footer.site nav { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.5rem; }
footer.site a { min-height: 44px; display: inline-flex; align-items: center; }