:root {
  color-scheme: dark;
  --ink: #f4f7fb;
  --muted: #aab5c4;
  --deep-muted: #7d8999;
  --line: rgba(255, 255, 255, 0.12);
  --panel: rgba(16, 24, 36, 0.84);
  --accent: #69e7b0;
  --background: #07101a;
  --max-width: 940px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 85% 0, rgba(39, 112, 92, 0.22), transparent 28rem),
    var(--background);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}
a { color: var(--accent); }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; border-radius: 5px; }
.shell { width: min(calc(100% - 40px), var(--max-width)); margin-inline: auto; }
.site-header {
  display: flex;
  min-height: 82px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); font-weight: 800; letter-spacing: .04em; text-decoration: none; text-transform: uppercase; }
.brand-mark { display: grid; width: 36px; height: 36px; place-items: center; border: 1px solid rgba(105,231,176,.36); border-radius: 10px; color: var(--accent); font-size: .78rem; }
.site-nav { display: flex; flex-wrap: wrap; gap: 12px 22px; }
.site-nav a { color: var(--muted); font-size: .9rem; font-weight: 700; text-decoration: none; }
.site-nav a:hover { color: var(--ink); }
main { padding-block: clamp(64px, 9vw, 110px); }
.eyebrow { margin: 0 0 16px; color: var(--accent); font-size: .76rem; font-weight: 850; letter-spacing: .15em; text-transform: uppercase; }
h1 { max-width: 820px; margin: 0 0 24px; font-size: clamp(2.6rem, 7vw, 5rem); letter-spacing: -.055em; line-height: 1; }
.lede { max-width: 720px; margin-bottom: 54px; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.22rem); }
.content-grid { display: grid; gap: 22px; }
.content-card { padding: clamp(25px, 5vw, 42px); border: 1px solid var(--line); border-radius: 22px; background: var(--panel); }
.content-card h2 { margin: 0 0 12px; font-size: clamp(1.45rem, 4vw, 2rem); letter-spacing: -.025em; line-height: 1.15; }
.content-card h3 { margin: 28px 0 8px; font-size: 1.05rem; }
.content-card p:last-child, .content-card ul:last-child { margin-bottom: 0; }
.content-card p, .content-card li { color: var(--muted); }
.content-card strong { color: var(--ink); }
.content-card ul, .content-card ol { padding-left: 1.2rem; }
.callout { border-color: rgba(105,231,176,.28); background: linear-gradient(145deg, rgba(105,231,176,.09), var(--panel)); }
.button { display: inline-flex; min-height: 48px; margin-top: 12px; padding: 0 20px; align-items: center; justify-content: center; border-radius: 999px; background: var(--accent); color: #042318; font-weight: 800; text-decoration: none; }
.updated { margin-top: 34px; color: var(--deep-muted); font-size: .8rem; }
.site-footer { display: flex; padding-block: 34px 46px; align-items: start; justify-content: space-between; gap: 22px; border-top: 1px solid var(--line); color: var(--deep-muted); font-size: .8rem; }
.site-footer p { margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px 18px; }
.footer-links a { color: var(--muted); text-decoration: none; }
@media (max-width: 680px) {
  .shell { width: min(calc(100% - 26px), var(--max-width)); }
  .site-header { min-height: 74px; align-items: flex-start; flex-direction: column; padding-block: 16px; }
  .site-footer { flex-direction: column; }
  .footer-links { justify-content: flex-start; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }