:root {
  color-scheme: light;
  --background: #f8faf8;
  --surface: #ffffff;
  --ink: #172033;
  --muted: #526070;
  --border: #d9e2df;
  --accent: #006d77;
  --warning: #8a3b12;
  --warning-surface: #fff2e8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

.banner {
  background: var(--warning-surface);
  border-bottom: 1px solid #f1c8a8;
  color: var(--warning);
  font-weight: 700;
  padding: 12px 20px;
  text-align: center;
}

.site-header {
  align-items: center;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: space-between;
  padding: 18px clamp(18px, 4vw, 44px);
}

.brand {
  color: var(--ink);
  font-size: 22px;
  font-weight: 800;
  text-decoration: none;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

nav a {
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

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

main {
  margin: 0 auto;
  max-width: 920px;
  padding: 44px clamp(18px, 4vw, 44px);
}

.hero {
  margin-bottom: 28px;
}

h1 {
  font-size: clamp(32px, 7vw, 56px);
  line-height: 1.05;
  margin: 0 0 18px;
}

h2 {
  border-top: 1px solid var(--border);
  font-size: 24px;
  line-height: 1.2;
  margin-top: 34px;
  padding-top: 26px;
}

h3 {
  font-size: 19px;
  margin-top: 28px;
}

p,
li,
td,
th {
  font-size: 17px;
}

p {
  margin: 0 0 16px;
}

ul {
  padding-left: 24px;
}

blockquote {
  border-left: 4px solid var(--accent);
  color: var(--muted);
  margin: 20px 0;
  padding-left: 18px;
}

code {
  background: #eef4f2;
  border-radius: 4px;
  padding: 1px 5px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  margin: 18px 0;
  min-width: 620px;
  width: 100%;
}

th,
td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #eef4f2;
}

.link-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.link-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--ink);
  display: block;
  padding: 18px;
  text-decoration: none;
}

.link-card strong,
.link-card span {
  display: block;
}

.link-card span {
  color: var(--muted);
  margin-top: 8px;
}

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  margin: 0 auto;
  max-width: 920px;
  padding: 24px clamp(18px, 4vw, 44px) 44px;
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    flex-direction: column;
  }
}