.page-lower--about {
  --about-blue: #075eae;
  --about-deep: #17365d;
  --about-line: rgba(42, 148, 214, .22);
  --about-soft: #f6fcff;
  --about-aqua: #e7fbff;
}

.page-lower--about .lower-main {
  background:
    radial-gradient(circle at 10% 24rem, rgba(159, 233, 246, .26), transparent 17rem),
    radial-gradient(circle at 92% 38rem, rgba(210, 247, 255, .42), transparent 18rem),
    linear-gradient(180deg, #fff 0%, #f7fdff 52%, #fff 100%);
}

.about-hero {
  padding-bottom: clamp(1.2rem, 3vw, 2.4rem);
}

.about-hero::before {
  top: 10%;
  left: 5%;
  opacity: .32;
}

.about-hero::after {
  opacity: .34;
}

.about-hero__inner {
  grid-template-columns: minmax(0, 1fr) minmax(280px, .48fr);
  background:
    radial-gradient(circle at 90% 18%, rgba(159, 233, 246, .34), transparent 14rem),
    linear-gradient(135deg, #fff 0%, #f1fbff 58%, #dff7fb 100%);
}

.about-hero__label {
  margin-bottom: .85rem;
}

.about-summary {
  position: relative;
  margin-top: clamp(1.1rem, 2vw, 1.45rem);
  padding: clamp(1rem, 2vw, 1.35rem) clamp(1rem, 2.4vw, 1.6rem);
  background:
    radial-gradient(circle at 96% 12%, rgba(159, 233, 246, .24), transparent 7rem),
    rgba(255, 255, 255, .94);
  border: 1px solid var(--about-line);
  border-left: 6px solid #8bd0f2;
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(12, 111, 172, .08);
}

.about-summary::before {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: .55rem;
  padding: .22rem .75rem;
  color: #075eae;
  content: "要約";
  font-size: .82rem;
  font-weight: 700;
  line-height: 1.3;
  background: #eaf8ff;
  border: 1px solid rgba(42, 148, 214, .2);
  border-radius: 999px;
}

.about-summary p,
.about-note p {
  margin: 0;
  color: var(--about-deep);
  font-size: clamp(1rem, 1.12vw, 1.08rem);
  line-height: 1.9;
}

.about-hero__brand {
  position: relative;
  display: grid;
  place-items: center;
  gap: 1rem;
  min-height: 100%;
  margin: 0;
  padding: clamp(1.3rem, 3vw, 2rem);
  text-align: center;
  background:
    radial-gradient(circle at 26% 20%, rgba(255, 255, 255, .84), transparent 7rem),
    rgba(255, 255, 255, .72);
  border: 1px solid rgba(42, 148, 214, .18);
  border-radius: 8px;
  box-shadow: inset 0 0 0 6px rgba(255, 255, 255, .5);
}

.about-hero__brand::after {
  position: absolute;
  right: 1rem;
  bottom: .8rem;
  width: clamp(52px, 6vw, 88px);
  aspect-ratio: 1;
  content: "";
  background: url("../images/common/bubble01.png") center / contain no-repeat;
  opacity: .44;
}

.about-hero__brand img {
  display: block;
  width: min(100%, 360px);
  height: auto;
}

.about-hero__brand p {
  margin: 0;
  color: #00488f;
  font-size: clamp(.9rem, 1vw, 1rem);
  font-weight: 700;
  line-height: 1.6;
}

.about-page-nav {
  margin-top: clamp(.8rem, 2vw, 1.6rem);
}

.about-content {
  gap: clamp(1rem, 2vw, 1.5rem);
  margin-top: clamp(1.2rem, 3vw, 2.2rem);
}

.about-section,
.about-info-section,
.about-faq-section {
  overflow: hidden;
}

.about-copy {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(.8rem, 2vw, 1.2rem) clamp(1rem, 2.4vw, 1.6rem);
}

.about-copy p {
  padding: clamp(.85rem, 1.6vw, 1.1rem);
  background: var(--about-soft);
  border: 1px solid rgba(42, 148, 214, .14);
  border-radius: 8px;
}

.about-info-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(260px, .58fr);
  gap: clamp(1rem, 2.2vw, 1.6rem);
  align-items: stretch;
}

.about-info-table {
  width: 100%;
  overflow: hidden;
  color: var(--about-deep);
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--about-line);
  border-radius: 8px;
}

.about-info-table th,
.about-info-table td {
  padding: clamp(.82rem, 1.5vw, 1rem) clamp(.9rem, 1.8vw, 1.2rem);
  line-height: 1.7;
  vertical-align: top;
  border-bottom: 1px solid rgba(42, 148, 214, .14);
}

.about-info-table tr:last-child th,
.about-info-table tr:last-child td {
  border-bottom: 0;
}

.about-info-table th {
  width: 10.5em;
  color: #00488f;
  font-weight: 700;
  text-align: left;
  background: #eaf8ff;
}

.about-info-table td {
  background: #fff;
}

.about-note {
  display: grid;
  align-content: center;
  padding: clamp(1rem, 2vw, 1.4rem);
  background:
    radial-gradient(circle at 92% 12%, rgba(159, 233, 246, .25), transparent 7rem),
    #fffdf7;
  border: 1px solid rgba(214, 170, 74, .22);
  border-left: 6px solid #d9a441;
  border-radius: 8px;
}

.about-faq .lower-faq details,
.about-faq details {
  background: #fff;
}

.about-related {
  margin-top: clamp(1.6rem, 3vw, 2.6rem);
}

.about-summary:focus-within,
.about-info-table:focus-within,
.about-faq summary:focus-visible {
  outline: 3px solid rgba(42, 148, 214, .42);
  outline-offset: 3px;
}

@media (min-width: 1200px) {
  .page-lower--about .lower-breadcrumb,
  .page-lower--about .lower-hero__inner,
  .page-lower--about .lower-page-nav,
  .page-lower--about .lower-content,
  .page-lower--about .lower-related,
  .page-lower--about .lower-pager,
  .page-lower--about .lower-back {
    width: min(1280px, 100% - 64px);
  }
}

@media (max-width: 860px) {
  .about-hero__inner,
  .about-copy,
  .about-info-layout {
    grid-template-columns: 1fr;
  }

  .about-hero__brand {
    order: -1;
  }

  .about-hero__brand img {
    width: min(78vw, 320px);
  }
}

@media (max-width: 560px) {
  .about-summary,
  .about-copy p,
  .about-note {
    padding: 1rem;
  }

  .about-info-table,
  .about-info-table tbody,
  .about-info-table tr,
  .about-info-table th,
  .about-info-table td {
    display: block;
    width: 100%;
  }

  .about-info-table th {
    padding-bottom: .35rem;
    border-bottom: 0;
  }

  .about-info-table td {
    padding-top: .35rem;
  }
}