:root {
  --ink: #1a2e2a;
  --muted: #4a5c57;
  --paper: #f3efe6;
  --sheet: #fffdf8;
  --line: #d4cdc0;
  --accent: #215d6b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "Songti SC", "Noto Serif JP", "Times New Roman", serif;
  line-height: 1.75;
  font-size: 17px;
}

.sans {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "PingFang SC", sans-serif;
}

header {
  padding: 36px 20px 20px;
  border-bottom: 1px solid var(--line);
}

header .wrap,
nav,
main,
footer {
  max-width: 40rem;
  margin: 0 auto;
}

header .brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

header img {
  width: 56px;
  height: 56px;
  border-radius: 12px;
}

header h1 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

header p {
  margin: 0.15em 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

nav {
  padding: 14px 20px 0;
  font-size: 0.92rem;
}

nav a {
  color: var(--accent);
  text-decoration: none;
  margin-right: 1.1rem;
}

nav a:hover,
main a:hover {
  text-decoration: underline;
}

main {
  padding: 8px 20px 64px;
  background: var(--sheet);
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

main h1 {
  font-size: 1.55rem;
  margin: 1.4rem 0 0.6rem;
}

main h2 {
  font-size: 1.1rem;
  margin: 2rem 0 0.5rem;
}

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

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

th, td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

th { background: #efe9dc; }

.apps {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0;
}

.apps li {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

.apps li:last-child { border-bottom: 1px solid var(--line); }

.apps a {
  font-size: 1.15rem;
  text-decoration: none;
}

.note {
  color: var(--muted);
  font-size: 0.95rem;
}

footer {
  padding: 20px;
  color: var(--muted);
  font-size: 0.85rem;
}

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