:root {
  --navy: #071f45;
  --navy-2: #123566;
  --text: #172033;
  --muted: #59657a;
  --line: #d7dee9;
  --soft: #f6f8fb;
  --white: #ffffff;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", "Noto Sans JP", Meiryo, sans-serif;
  line-height: 1.8;
  letter-spacing: 0.01em;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--navy-2);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--navy);
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 18px 10px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 1px;
  color: var(--navy);
  text-decoration: none;
}

.brand__main {
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
}

.brand__sub {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav {
  margin: 12px -18px 0;
  padding: 0 18px 8px;
  display: flex;
  flex-wrap: nowrap;
  column-gap: 24px;
  row-gap: 8px;
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
}

.nav a {
  flex: 0 0 auto;
  color: var(--text);
  text-decoration: none;
  font-size: 0.92rem;
  padding: 6px 0 5px;
  border-bottom: 2px solid transparent;
}

.nav a[aria-current="page"],
.nav a:hover {
  color: var(--navy);
  border-bottom-color: var(--navy);
}

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 18px 36px;
}

.hero__image {
  margin: 0 -18px;
  border-bottom: 4px solid var(--navy);
}

.hero__image img {
  width: 100%;
  height: clamp(210px, 52vw, 420px);
  object-fit: cover;
  object-position: center;
}

.hero__body {
  padding-top: 30px;
}

.eyebrow,
.section-label {
  margin: 0 0 10px;
  color: var(--navy-2);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  color: var(--navy);
  line-height: 1.35;
  margin: 0 0 14px;
}

h1 {
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(2rem, 10vw, 3.35rem);
  letter-spacing: 0.06em;
}

h2 {
  font-size: clamp(1.35rem, 6vw, 2rem);
}

h2 span {
  display: inline-block;
  color: var(--muted);
  font-size: 0.8em;
  font-weight: 500;
}

h3 {
  font-size: 1.08rem;
}

.hero__lead,
.page-title p {
  margin: 0;
  font-size: 1rem;
}

.actions {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 16px;
  border: 1px solid var(--navy);
  color: var(--navy);
  background: #fff;
  text-decoration: none;
  font-weight: 700;
  text-align: center;
}

.button--primary {
  background: var(--navy);
  color: #fff;
}

.button--primary:hover {
  background: var(--navy-2);
  color: #fff;
}

.section,
.page-title {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: 18px;
  padding-right: 18px;
}

.section {
  padding-top: 38px;
  padding-bottom: 38px;
}

.page-title {
  padding-top: 38px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.section--ruled {
  border-top: 1px solid var(--line);
}

.section__head {
  margin-bottom: 12px;
}

.line-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.line-list li {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.line-list__num {
  color: var(--navy-2);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 1.2rem;
}

.line-list p,
.theme-list p,
.split__body p {
  margin: 0;
}

.line-list h3 {
  margin-bottom: 8px;
}

.split {
  border-top: 1px solid var(--line);
}

.split__head {
  margin-bottom: 16px;
}

.split__body > * + * {
  margin-top: 12px;
}

.photo-band {
  padding-bottom: 0;
}

.photo-band img {
  width: 100%;
  max-height: 330px;
  object-fit: cover;
  border-bottom: 4px solid var(--navy);
}

.theme-list {
  border-top: 1px solid var(--line);
}

.theme-list > section {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.simple-list {
  margin: 0;
  padding-left: 1.3em;
}

.simple-list li + li {
  margin-top: 6px;
}

.meta-list {
  margin: 16px 0 0;
  border-top: 1px solid var(--line);
}

.meta-list div {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.meta-list dt {
  color: var(--navy);
  font-weight: 700;
}

.meta-list dd {
  margin: 2px 0 0;
}

.note {
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer {
  margin-top: 30px;
  border-top: 1px solid var(--line);
  background: var(--soft);
}

.site-footer__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px 18px;
  color: var(--muted);
  font-size: 0.88rem;
}

.site-footer__inner p {
  margin: 0;
}

.site-footer__inner p + p {
  margin-top: 8px;
}

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

@media (min-width: 700px) {
  .site-header__inner {
    padding: 18px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .nav {
    margin: 0;
    padding: 0;
    justify-content: flex-end;
    overflow: visible;
    column-gap: 28px;
  }
.hero {
    padding: 48px 28px 54px;
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 42px;
    align-items: center;
  }

  .hero__image {
    margin: 0;
    grid-column: 2;
    grid-row: 1;
  }

  .hero__body {
    padding-top: 0;
    grid-column: 1;
    grid-row: 1;
  }

  .hero__image img {
    height: 430px;
  }

  .actions {
    display: flex;
    flex-wrap: wrap;
  }

  .button {
    width: auto;
  }

  .section,
  .page-title {
    padding-left: 28px;
    padding-right: 28px;
  }

  .split {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 34px;
  }

  .split__head {
    margin-bottom: 0;
  }

  .line-list li {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 24px;
  }

  .theme-list > section {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 30px;
  }

  .theme-list h2 {
    font-size: 1.35rem;
  }

  .meta-list div {
    display: grid;
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 18px;
  }

  .meta-list dd {
    margin-top: 0;
  }

  .site-footer__inner {
    padding: 26px 28px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
  }

  .site-footer__inner p + p {
    margin-top: 0;
  }
}

@media (min-width: 1000px) {
  h1 {
    font-size: 4.15rem;
  }

  .hero__lead {
    font-size: 1.04rem;
  }
}