:root {
  --bg: #faf9f7;
  --surface: #ffffff;
  --ink: #1c1a17;
  --muted: #6b6560;
  --hairline: #e7e2db;
  --accent: #b8863f;
  --accent-ink: #1c1a17;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17140f;
    --surface: #201c16;
    --ink: #f3efe8;
    --muted: #a89f92;
    --hairline: #35302a;
    --accent: #d9a85c;
    --accent-ink: #17140f;
  }
}

:root[data-theme="dark"] {
  --bg: #17140f;
  --surface: #201c16;
  --ink: #f3efe8;
  --muted: #a89f92;
  --hairline: #35302a;
  --accent: #d9a85c;
  --accent-ink: #17140f;
}

:root[data-theme="light"] {
  --bg: #faf9f7;
  --surface: #ffffff;
  --ink: #1c1a17;
  --muted: #6b6560;
  --hairline: #e7e2db;
  --accent: #b8863f;
  --accent-ink: #1c1a17;
}

* { box-sizing: border-box; }

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

.wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 56px 24px 96px;
}

header.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--hairline);
}

header.top .brand {
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}

header.top nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  margin-left: 18px;
}

header.top nav a:hover,
header.top nav a[aria-current="page"] {
  color: var(--accent);
}

h1 {
  font-size: 30px;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin: 0 0 6px;
}

.meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 40px;
}

h2 {
  font-size: 19px;
  margin: 40px 0 12px;
  letter-spacing: -0.01em;
}

p, li {
  font-size: 15.5px;
  color: var(--ink);
}

ul {
  padding-left: 22px;
}

li + li {
  margin-top: 6px;
}

strong {
  font-weight: 700;
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  padding: 20px 22px;
  margin: 20px 0;
}

.card p:first-child { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }

footer {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--hairline);
  color: var(--muted);
  font-size: 13px;
}

.index-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 28px;
}

.index-links a {
  display: block;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  padding: 16px 20px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  font-size: 15.5px;
}

.index-links a:hover {
  border-color: var(--accent);
}

.index-links span {
  display: block;
  font-weight: 500;
  color: var(--muted);
  font-size: 13.5px;
  margin-top: 4px;
}