:root {
  color-scheme: light dark;
  --bg: #f7f8fc;
  --surface: #ffffff;
  --surface-soft: #f0f2f8;
  --text: #161a24;
  --muted: #62697a;
  --border: #dfe3ec;
  --purple: #5f2dee;
  --purple-dark: #4620b8;
  --purple-soft: #ece7ff;
  --green: #168153;
  --shadow: 0 22px 54px rgba(36, 26, 74, 0.09);
  --max-width: 1120px;
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 90% -5%, rgba(95, 45, 238, 0.12), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

a:hover { color: var(--purple); }
a:focus-visible { outline: 3px solid var(--purple); outline-offset: 4px; border-radius: 3px; }

.site-header,
main,
footer {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.site-header {
  min-height: 5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  font-size: 0.98rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: 0.55rem;
  background: var(--purple);
  color: white;
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: -0.04em;
  box-shadow: 0 8px 18px rgba(95, 45, 238, 0.2);
}

nav { display: flex; gap: 1rem; }
nav a { color: var(--muted); font-size: 0.88rem; font-weight: 650; text-decoration: none; }
nav a[aria-current="page"] { color: var(--purple); }

.hero { padding: 5rem 0 4rem; }

.eyebrow,
.kicker {
  margin: 0 0 1.25rem;
  color: var(--purple);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  line-height: 1.4;
  text-transform: uppercase;
}

h1,
h2,
p { overflow-wrap: break-word; }

h1 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(2.75rem, 11vw, 6.6rem);
  font-weight: 800;
  letter-spacing: -0.065em;
  line-height: 0.94;
}

.lede {
  max-width: 42rem;
  margin: 1.75rem 0 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 3.5vw, 1.35rem);
  line-height: 1.55;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 1.75rem 0 0;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 650;
}

.status span { width: 0.55rem; height: 0.55rem; border-radius: 50%; background: #df9d20; box-shadow: 0 0 0 4px rgba(223, 157, 32, 0.14); }

.content-grid { display: grid; gap: 1rem; }

.card {
  position: relative;
  overflow: hidden;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 1.2rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card-accent { background: var(--text); color: var(--bg); }
.card-accent li { color: color-mix(in srgb, var(--bg) 78%, transparent); }
.card-accent li::marker { color: #a990ff; }

.section-number { margin: 0 0 2.5rem; color: var(--purple); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.08em; }
.card h2 { margin: 0; font-size: clamp(1.6rem, 5vw, 2.3rem); letter-spacing: -0.04em; line-height: 1.1; }
.card ul { margin: 1.5rem 0 0; padding-left: 1.2rem; }
.card li { padding-left: 0.3rem; color: var(--muted); }
.card li + li { margin-top: 0.9rem; }
.card li::marker { color: var(--purple); }

.attribution {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1rem 0 4.5rem;
  padding: 1.25rem;
  border: 1px solid color-mix(in srgb, var(--purple) 22%, var(--border));
  border-radius: 1rem;
  background: var(--purple-soft);
}

.attribution p { margin: 0; color: var(--muted); font-size: 0.88rem; line-height: 1.5; }
.attribution strong { color: var(--text); }

.policy { max-width: 780px; padding-top: 4rem; }
.policy-heading { padding-bottom: 2.5rem; border-bottom: 1px solid var(--border); }
.policy-heading h1 { max-width: none; font-size: clamp(2.7rem, 10vw, 5rem); }
.policy-heading > p:last-child { max-width: 42rem; margin: 1.5rem 0 0; color: var(--muted); font-size: 1.1rem; }
.policy-body { padding: 1rem 0 2rem; }
.policy-body section { padding: 1.5rem 0; border-bottom: 1px solid var(--border); }
.policy-body h2 { margin: 0 0 0.7rem; font-size: 1.25rem; letter-spacing: -0.025em; }
.policy-body p { margin: 0; color: var(--muted); }
.policy .attribution { margin-top: 1rem; }

footer {
  display: grid;
  gap: 0.7rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.78rem;
}

footer p { margin: 0; }
.footer-links { display: flex; gap: 1rem; }
.footer-links a { color: var(--text); font-weight: 650; }

@media (min-width: 720px) {
  .site-header, main, footer { width: min(100% - 4rem, var(--max-width)); }
  .site-header { min-height: 6rem; }
  nav { gap: 1.75rem; }
  .hero { padding: 7.5rem 0 6rem; }
  .content-grid { grid-template-columns: 0.9fr 1.1fr; }
  .card { padding: 2.5rem; }
  .section-number { margin-bottom: 4rem; }
  .attribution { padding: 1.4rem 1.6rem; }
  footer { grid-template-columns: 1fr auto auto; align-items: center; gap: 2rem; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --surface: #151a23;
    --surface-soft: #1a202b;
    --text: #f2f3f7;
    --muted: #a8afbf;
    --border: #2a3140;
    --purple: #a990ff;
    --purple-dark: #c2b1ff;
    --purple-soft: #211a39;
    --green: #4bca8d;
    --shadow: 0 22px 54px rgba(0, 0, 0, 0.22);
  }
  body { background: radial-gradient(circle at 90% -5%, rgba(122, 88, 230, 0.18), transparent 30rem), var(--bg); }
  .brand-mark { background: #6f43e8; }
  .card-accent { background: #f0f1f5; color: #161a24; }
  .card-accent li { color: #535b6c; }
  .card-accent li::marker { color: #6536e6; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}