:root {
  color-scheme: light dark;
  --ink: #10161d;
  --muted: #59636f;
  --paper: #f4f7f9;
  --surface: rgba(255, 255, 255, 0.88);
  --line: #d8e0e6;
  --blue: #1577de;
  --blue-deep: #075caf;
  --gold: #f2bb24;
  --green: #087f62;
  --shadow: 0 22px 60px rgba(17, 35, 52, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 85% 0%, rgba(21, 119, 222, 0.12), transparent 34rem),
    linear-gradient(180deg, #fbfcfd 0%, var(--paper) 72%);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--blue-deep);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--blue);
}

a:focus-visible {
  border-radius: 0.2rem;
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.6rem 0.85rem;
  border-radius: 0.5rem;
  background: var(--ink);
  color: white;
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header,
.site-footer,
main {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-weight: 760;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand img {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(16, 22, 29, 0.16);
  border-radius: 12px;
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 1.1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

nav a {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 670;
  text-decoration: none;
}

nav a[aria-current="page"] {
  color: var(--blue-deep);
}

main {
  padding-block: clamp(3rem, 7vw, 7rem);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 6rem);
}

.hero-art {
  width: min(100%, 430px);
  justify-self: end;
  border-radius: 28%;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--blue-deep);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.73rem;
  font-weight: 760;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.13;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 14ch;
  font-size: clamp(2.7rem, 7vw, 5.6rem);
}

h2 {
  font-size: clamp(1.45rem, 3vw, 2.1rem);
}

h3 {
  font-size: 1.05rem;
}

.lede {
  max-width: 62ch;
  margin: 1.4rem 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.3vw, 1.35rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0.7rem 1rem;
  border: 1px solid var(--blue);
  border-radius: 999px;
  background: var(--blue);
  color: white;
  font-weight: 720;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--blue-deep);
}

.content-shell {
  display: grid;
  grid-template-columns: minmax(180px, 0.28fr) minmax(0, 0.72fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: start;
}

.page-intro {
  position: sticky;
  top: 1.5rem;
}

.page-intro h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
}

.prose {
  padding: clamp(1.3rem, 4vw, 3.5rem);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.prose section + section {
  margin-top: 2.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.prose p,
.prose ul,
.prose ol {
  margin: 0.8rem 0 0;
}

.notice {
  margin-top: 1.5rem;
  padding: 1rem 1.1rem;
  border-left: 4px solid var(--gold);
  border-radius: 0 12px 12px 0;
  background: rgba(242, 187, 36, 0.11);
}

.stat-grid,
.coverage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.stat-grid {
  margin: 2rem 0;
}

.stat,
.coverage-card {
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
}

.stat strong {
  display: block;
  font-size: 2rem;
}

.coverage-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 0.4rem 1rem;
}

.coverage-card strong {
  color: var(--green);
  white-space: nowrap;
}

.coverage-card p:last-child {
  grid-column: 1 / -1;
  margin: 0.65rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

code {
  overflow-wrap: anywhere;
  font-size: 0.82em;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 2rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 760px) {
  .site-header,
  .site-footer,
  .hero,
  .content-shell {
    display: block;
  }

  nav {
    margin-top: 1rem;
  }

  nav ul {
    justify-content: flex-start;
  }

  .hero-art {
    margin-top: 3rem;
  }

  .page-intro {
    position: static;
    margin-bottom: 2rem;
  }

  .coverage-grid {
    grid-template-columns: 1fr;
  }

  .site-footer p + p {
    margin-top: 0.5rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f3f7fa;
    --muted: #aab5c0;
    --paper: #0b1117;
    --surface: rgba(17, 25, 34, 0.92);
    --line: #293744;
    --blue: #4b9df2;
    --blue-deep: #78b8f8;
    --green: #53d3ad;
    --shadow: 0 22px 60px rgba(0, 0, 0, 0.34);
  }

  body {
    background:
      radial-gradient(circle at 85% 0%, rgba(75, 157, 242, 0.16), transparent 34rem),
      linear-gradient(180deg, #101923 0%, var(--paper) 72%);
  }

  .stat,
  .coverage-card {
    background: rgba(11, 17, 23, 0.54);
  }
}

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