:root {
  color-scheme: light;
  --ink: #172026;
  --muted: #5a6772;
  --soft: #eef3f6;
  --line: #d9e2e8;
  --surface: #ffffff;
  --accent: #0e766e;
  --accent-strong: #0a4f49;
  --gold: #b7791f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(14, 118, 110, 0.1), rgba(255, 255, 255, 0) 360px),
    #f8fafb;
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

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

.page {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 750;
  letter-spacing: 0;
  text-decoration: none;
}

.mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(14, 118, 110, 0.2);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 12px 30px rgba(18, 38, 63, 0.08);
}

.mark span {
  display: block;
  width: 18px;
  height: 18px;
  border: 3px solid var(--accent);
  border-right-color: var(--gold);
  border-radius: 50%;
}

.badge {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  white-space: nowrap;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: end;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 0.98;
  letter-spacing: 0;
}

.lede {
  max-width: 720px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 19px;
}

.summary {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 18px 48px rgba(18, 38, 63, 0.08);
}

.summary strong {
  display: block;
  margin-bottom: 10px;
  font-size: 15px;
}

.summary p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

main {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 56px;
  padding-top: 44px;
}

nav {
  position: sticky;
  top: 24px;
  align-self: start;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

nav strong {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

nav a {
  display: block;
  padding: 7px 0;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

nav a:hover {
  color: var(--accent-strong);
}

nav a.is-active {
  color: var(--accent-strong);
  font-weight: 750;
}

.content {
  padding-bottom: 20px;
}

section {
  padding: 0 0 34px;
}

section + section {
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 14px;
  font-size: 28px;
  line-height: 1.15;
  letter-spacing: 0;
}

p,
li {
  color: var(--muted);
  font-size: 16px;
}

p {
  margin: 0 0 14px;
}

ul {
  margin: 12px 0 0;
  padding-left: 22px;
}

li + li {
  margin-top: 8px;
}

.callout {
  margin: 10px 0 18px;
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  background: var(--soft);
}

.callout p {
  margin: 0;
  color: #31424f;
}

footer {
  margin-top: 42px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 820px) {
  .page {
    width: min(100% - 28px, 680px);
    padding-top: 24px;
  }

  .topbar {
    align-items: flex-start;
    margin-bottom: 44px;
  }

  .hero,
  main {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 28px;
  }

  nav {
    position: static;
  }
}

@media (max-width: 560px) {
  .topbar {
    flex-direction: column;
    gap: 14px;
  }

  .badge {
    white-space: normal;
  }

  h1 {
    font-size: 42px;
  }
}