:root {
  --bg: #f7f4ef;
  --bg-accent: #ebe4d8;
  --ink: #1a2332;
  --muted: #5a6578;
  --line: #d4ccc0;
  --brand: #0c4a6e;
  --brand-soft: #e0f2fe;
  --max: 42rem;
  --font: "Source Serif 4", "Georgia", "Times New Roman", serif;
  --sans: "DM Sans", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.65;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, #dbeafe 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, #fde68a33 0%, transparent 50%),
    var(--bg);
}

a {
  color: var(--brand);
  text-underline-offset: 0.15em;
}

a:hover {
  text-decoration-thickness: 2px;
}

.wrap {
  width: min(100% - 2rem, 52rem);
  margin-inline: auto;
  padding-block: 1.25rem 3.5rem;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 2rem;
}

.brand {
  font-family: var(--font);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand:hover {
  color: var(--brand);
  text-decoration: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  font-size: 0.875rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--brand);
  text-decoration: underline;
}

.meta {
  font-size: 0.875rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.meta strong {
  color: var(--ink);
  font-weight: 600;
}

h1 {
  font-family: var(--font);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
  max-width: var(--max);
}

h2 {
  font-family: var(--font);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2rem 0 0.65rem;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 1.35rem 0 0.4rem;
}

.lead {
  max-width: var(--max);
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.prose {
  max-width: var(--max);
}

.prose p,
.prose ul,
.prose ol,
.prose table {
  margin: 0 0 1rem;
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose li {
  margin-bottom: 0.35rem;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.prose th,
.prose td {
  border: 1px solid var(--line);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: var(--bg-accent);
  font-weight: 600;
}

.card-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.75rem;
}

.card-list a {
  display: block;
  padding: 1rem 1.15rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.card-list a:hover {
  border-color: var(--brand);
  box-shadow: 0 4px 20px #0c4a6e14;
}

.card-list strong {
  display: block;
  color: var(--brand);
  margin-bottom: 0.2rem;
}

.card-list span {
  font-size: 0.9rem;
  color: var(--muted);
}

.note {
  margin-top: 2rem;
  padding: 1rem 1.15rem;
  background: var(--brand-soft);
  border-radius: 10px;
  font-size: 0.95rem;
  max-width: var(--max);
}

.site-footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.875rem;
  color: var(--muted);
}

.site-footer a {
  color: var(--muted);
}