:root {
  --paper: #f3f0e8;
  --sheet: #fffcf7;
  --ink: #1c2430;
  --muted: #5e6874;
  --line: #e2d9cc;
  --accent: #1d4a42;
  --accent-soft: #e7f0ed;
  --notice: #f7efe2;
  --notice-ink: #6a4b16;
  --max: 760px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--ink);
  color: #fff;
  padding: 8px 12px;
  z-index: 10;
}

.skip:focus {
  top: 12px;
}

.wrap {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

header {
  background: var(--sheet);
  border-bottom: 1px solid var(--line);
}

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
}

.brand {
  color: var(--ink);
  text-decoration: none;
  font-family: Fraunces, Georgia, serif;
  font-weight: 560;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

nav {
  display: flex;
  gap: 18px;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

nav a[aria-current="page"] {
  color: var(--accent);
  font-weight: 650;
}

main {
  padding: 40px 0 64px;
}

.kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: Fraunces, Georgia, serif;
  font-weight: 560;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 5vw, 3.15rem);
}

h2 {
  margin: 40px 0 12px;
  font-size: 1.65rem;
}

h3 {
  margin: 0 0 6px;
  font-size: 1.15rem;
}

p,
li {
  color: var(--ink);
}

.lead {
  margin: 0;
  font-size: 1.2rem;
  color: var(--muted);
}

.notice,
.card,
.source-list,
.timeline {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.notice {
  margin-top: 28px;
  padding: 16px 18px;
  background: var(--notice);
  border-color: #ead7b4;
}

.notice strong {
  color: var(--notice-ink);
}

.grid {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.card {
  padding: 18px 18px 8px;
}

.card p:last-child {
  margin-bottom: 12px;
}

.timeline {
  margin: 8px 0 0;
  padding: 8px 18px 8px 0;
  list-style: none;
}

.timeline li {
  position: relative;
  padding: 14px 18px 14px 28px;
  border-top: 1px solid var(--line);
}

.timeline li:first-child {
  border-top: 0;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 22px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.year {
  display: block;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

ul.plain {
  margin: 8px 0 0;
  padding-left: 1.15rem;
}

ul.plain li + li {
  margin-top: 8px;
}

.source-list {
  padding: 8px 18px;
}

.source-list p {
  margin: 14px 0;
}

footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 0.92rem;
}

footer p {
  color: var(--muted);
  margin: 0 0 8px;
}

@media (max-width: 640px) {
  .bar {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  nav {
    gap: 14px;
    flex-wrap: wrap;
  }
}