:root {
  color-scheme: light;
  --ink: #0f172a;
  --muted: rgba(15, 23, 42, 0.64);
  --subtle: rgba(15, 23, 42, 0.48);
  --line: rgba(15, 23, 42, 0.12);
  --accent: #2f80a6;
  --paper: rgba(255, 255, 255, 0.76);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background:
    radial-gradient(ellipse min(560px, 48vw) min(420px, 46vh) at 40% 7%, rgba(255, 251, 224, 0.36) 0%, rgba(255, 251, 224, 0.16) 42%, transparent 74%),
    radial-gradient(ellipse min(680px, 58vw) min(500px, 56vh) at 58% 10%, rgba(164, 224, 255, 0.58) 0%, rgba(164, 224, 255, 0.31) 46%, transparent 76%),
    #ffffff;
}

html.acknowledgements-page {
  background:
    radial-gradient(ellipse min(560px, 48vw) min(420px, 46vh) at 40% 24%, rgba(255, 251, 224, 0.36) 0%, rgba(255, 251, 224, 0.16) 42%, transparent 74%),
    radial-gradient(ellipse min(680px, 58vw) min(500px, 56vh) at 58% 27%, rgba(164, 224, 255, 0.58) 0%, rgba(164, 224, 255, 0.31) 46%, transparent 76%),
    #ffffff;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  background: transparent;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.shell {
  width: min(100%, 880px);
  margin: 0 auto;
  padding: 40px 22px 56px;
}

.top-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 16px;
  font-weight: 650;
  text-decoration: none;
}

.mark {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.11);
}

header {
  padding: 58px 0 34px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--subtle);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(30px, 6vw, 48px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lede {
  max-width: 680px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

main {
  padding-top: 18px;
}

section {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

h2 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: 0;
}

h3 {
  margin: 24px 0 8px;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.35;
  letter-spacing: 0;
}

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

p {
  margin: 0 0 14px;
}

ul {
  margin: 10px 0 0;
  padding-left: 22px;
}

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

.notice {
  margin: 22px 0 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--muted);
}

.meta {
  margin-top: 18px;
  color: var(--subtle);
  font-size: 14px;
}

footer {
  padding: 28px 0 0;
  color: var(--subtle);
  font-size: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-bottom: 12px;
}

@media (max-width: 600px) {
  .shell {
    padding: 28px 20px 44px;
  }

  header {
    padding: 42px 0 28px;
  }

  .lede {
    font-size: 16px;
  }

  section {
    padding: 22px 0;
  }
}