:root {
  color-scheme: light;
  --ink: #14213d;
  --muted: #546179;
  --line: #d8dee9;
  --paper: #fbfcfe;
  --surface: #ffffff;
  --accent: #0f766e;
  --accent-soft: #e3f4f1;
  --warn-soft: #fff3d8;
  --warn: #855d0b;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.58;
}

header,
main,
footer {
  width: min(940px, calc(100% - 40px));
  margin: 0 auto;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 0 18px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0;
  text-decoration: none;
}

.mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.16), rgba(20, 33, 61, 0.08)),
    var(--surface);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--accent);
  font-size: 18px;
  font-weight: 800;
  flex: 0 0 auto;
}

nav {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

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

nav a {
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
}

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

main {
  padding: 56px 0 42px;
}

.eyebrow {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 10px 0 14px;
  font-size: clamp(34px, 7vw, 56px);
  line-height: 1.02;
  letter-spacing: 0;
  max-width: 780px;
}

h2 {
  margin: 34px 0 10px;
  font-size: 23px;
  line-height: 1.18;
  letter-spacing: 0;
}

p {
  margin: 0 0 15px;
  max-width: 760px;
}

ul {
  margin: 10px 0 22px;
  padding-left: 22px;
  max-width: 790px;
}

li {
  margin: 7px 0;
}

.summary {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.tile {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  padding: 16px;
  min-height: 132px;
}

.tile strong {
  display: block;
  margin-bottom: 7px;
}

.tile span {
  color: var(--muted);
  font-size: 14px;
}

.notice {
  margin: 24px 0;
  padding: 16px 18px;
  border: 1px solid #f2d9a2;
  background: var(--warn-soft);
  border-radius: 8px;
  color: var(--warn);
  max-width: 790px;
}

footer {
  padding: 24px 0 40px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 14px;
}

@media (max-width: 720px) {
  header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    justify-content: flex-start;
  }

  main {
    padding-top: 38px;
  }

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