.about-main {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
  padding: 26px 0 72px;
}

.about-hero {
  overflow: hidden;
  border: 1px solid #858b81;
  border-top: 8px solid #75674e;
  background:
    radial-gradient(
      ellipse at 100% 0,
      transparent 0 78px,
      rgba(99, 122, 91, 0.12) 79px 81px,
      transparent 82px 102px,
      rgba(99, 122, 91, 0.1) 103px 105px,
      transparent 106px
    ),
    rgba(255, 253, 247, 0.84);
  box-shadow: 0 18px 45px rgba(28, 47, 39, 0.09);
}

.about-titlebar {
  display: grid;
  grid-template-columns: 54px 1fr auto;
  min-height: 92px;
  align-items: center;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  padding: 14px 24px;
}

.about-titlebar p,
.about-card .eyebrow {
  margin: 0 0 3px;
  color: #748078;
  font-size: 0.61rem;
  font-weight: 900;
  letter-spacing: 0.2em;
}

.about-titlebar h1,
.about-card h2 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.about-titlebar h1 {
  font-size: clamp(1.55rem, 3vw, 2rem);
}

.about-titlebar > a {
  border: 1px solid var(--forest);
  color: var(--forest);
  padding: 10px 14px;
  font-size: 0.7rem;
  font-weight: 900;
}

.about-titlebar > a:hover {
  background: var(--forest);
  color: #fff;
}

.about-lead {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 30px;
  padding: 30px 32px 34px;
}

.about-lead p,
.about-lead strong {
  margin: 0;
  line-height: 1.9;
}

.about-lead p {
  color: var(--muted);
  font-size: 0.86rem;
}

.about-lead strong {
  border-left: 5px solid var(--seal);
  color: var(--forest-dark);
  padding-left: 22px;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 1.08rem;
}

.about-index {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin: 26px 0 40px;
  border: 1px solid var(--line);
  background: rgba(255, 253, 247, 0.58);
}

.about-index a {
  display: flex;
  min-height: 54px;
  align-items: center;
  gap: 9px;
  border-right: 1px solid var(--line);
  padding: 10px 14px;
  font-size: 0.7rem;
  font-weight: 800;
}

.about-index a:last-child {
  border-right: 0;
}

.about-index a:hover {
  background: rgba(97, 123, 94, 0.1);
}

.about-index span {
  color: var(--seal);
  font-family: Georgia, serif;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.about-card {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 18px;
  min-height: 260px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 247, 0.68);
  padding: 26px;
}

.about-number {
  color: var(--moss);
  font-family: Georgia, serif;
  font-size: 2rem;
  line-height: 1;
}

.about-card h2 {
  margin-bottom: 18px;
  font-size: 1.15rem;
}

.about-card p,
.about-card li {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.9;
}

.about-card p {
  margin: 0 0 12px;
}

.about-card ul {
  margin: 0;
  padding-left: 1.2em;
}

.about-card li + li {
  margin-top: 5px;
}

.about-note {
  margin-top: 18px;
  border-left: 5px solid var(--moss);
  background: rgba(97, 123, 94, 0.09);
  color: var(--forest);
  padding: 13px 15px;
  font-size: 0.75rem;
  font-weight: 800;
  line-height: 1.8;
}

.about-card-caution {
  background:
    linear-gradient(rgba(166, 75, 56, 0.035), rgba(166, 75, 56, 0.035)),
    rgba(255, 253, 247, 0.72);
}

.about-emphasis {
  display: block;
  margin-top: 18px;
  color: var(--seal);
  font-size: 0.78rem;
}

.about-submit {
  width: 100%;
  margin-top: 40px;
  margin-bottom: 40px;
}

.about-grid-bottom .about-card-date {
  grid-column: 1 / -1;
  min-height: 0;
}

.about-links {
  display: grid;
  border-top: 1px solid var(--line);
}

.about-links a {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  color: var(--forest);
  padding: 11px 4px;
  font-size: 0.76rem;
  font-weight: 800;
}

.about-links a:hover {
  padding-left: 10px;
}

.about-links span {
  color: var(--seal);
}

.about-small {
  font-size: 0.7rem !important;
}

@media (max-width: 820px) {
  .about-index {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-index a {
    border-bottom: 1px solid var(--line);
  }

  .about-lead,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-card-date {
    grid-column: auto;
  }
}

@media (max-width: 720px) {
  .about-main {
    width: min(100% - 24px, 1180px);
    padding-top: 16px;
  }

  .about-titlebar {
    grid-template-columns: 44px 1fr;
    gap: 12px;
    padding: 13px 15px;
  }

  .about-titlebar > a {
    grid-column: 1 / -1;
    text-align: center;
  }

  .about-lead {
    gap: 20px;
    padding: 22px 18px 26px;
  }

  .about-index {
    margin: 18px 0 28px;
  }

  .about-card {
    grid-template-columns: 42px 1fr;
    gap: 10px;
    min-height: 0;
    padding: 21px 16px;
  }

  .about-number {
    font-size: 1.55rem;
  }

  .about-submit {
    margin-top: 28px;
    margin-bottom: 28px;
  }
}

@media (max-width: 440px) {
  .about-index {
    grid-template-columns: 1fr;
  }

  .about-index a {
    border-right: 0;
  }

  .about-card {
    grid-template-columns: 1fr;
  }
}