:root {
  --ink: #172033;
  --muted: #536070;
  --line: #d9e0e8;
  --paper: #ffffff;
  --soft: #f4f7f5;
  --accent: #0f766e;
  --accent-dark: #0b4f4a;
  --warn: #8a4b08;
}

* {
  box-sizing: border-box;
}

html {
  background: #eef3f1;
}

body {
  margin: 0 auto;
  max-width: 980px;
  min-height: 100vh;
  padding: 32px 20px;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.62;
}

.hero,
.page-header {
  border-bottom: 1px solid var(--line);
  padding: 18px 0 24px;
}

.kicker {
  margin: 0 0 8px;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.15;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.2rem, 8vw, 4.6rem);
}

h2 {
  margin: 0 0 12px;
  font-size: 1.55rem;
}

h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.lede {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.15rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 22px;
}

a {
  color: #075985;
  font-weight: 700;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

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

main {
  padding: 24px 0 8px;
}

section {
  border-bottom: 1px solid var(--line);
  padding: 24px 0;
}

.notice {
  border: 1px solid #e5c78d;
  border-radius: 8px;
  margin-bottom: 14px;
  padding: 18px;
  background: #fff9ed;
}

.notice h2 {
  color: var(--warn);
}

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

.grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: var(--soft);
}

.button {
  display: inline-block;
  border-radius: 6px;
  padding: 10px 14px;
  color: #fff;
  background: var(--accent-dark);
  text-decoration: none;
}

.checklist,
.resource-list,
ol {
  padding-left: 22px;
}

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

footer {
  padding: 22px 0 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 720px) {
  body {
    padding: 22px 16px;
  }

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