@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&display=swap");

:root {
  --text: #1d2433;
  --bg: #ffffff;
  --line: #d7e0ef;
  --primary: #1f3b73;
  --link: #0b66c3;
  --cta: #e0532b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.85;
}

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

.page-header {
  background: #f1f5ff;
  border-bottom: 1px solid var(--line);
  padding: 28px 16px;
}

.page-header h1 {
  margin: 0;
  max-width: 1080px;
  color: var(--primary);
  font-size: 1.7rem;
}

main,
footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 16px 40px;
}

h2,
h3 {
  color: var(--primary);
}

.toc ul,
footer ul {
  padding-left: 1.2rem;
}

.juku-info {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 22px;
}

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

.juku-info th {
  width: 9rem;
  background: #f8fbff;
}

.cta {
  margin-top: 28px;
  padding: 18px;
  background: #fff6f2;
  border: 1px solid #ffd8cd;
  border-radius: 8px;
}

.cta-button {
  display: inline-block;
  background: var(--cta);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  padding: 10px 16px;
  border-radius: 6px;
}

.supervisor-box {
  margin-top: 28px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f9fbff;
}

footer {
  border-top: 1px solid var(--line);
  margin-top: 28px;
  font-size: 0.95rem;
}

.disclaimer {
  margin-top: 24px;
  color: #45516e;
}