.page-about {
  background-color: var(--light-gray);
  background-image: linear-gradient(135deg, rgba(27, 58, 92, 0.05) 25%, transparent 25%);
  background-size: 28px 28px;
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.72;
  overflow-x: clip;
  padding: 24px 0 72px;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about figure {
  margin: 0;
}

.page-about img {
  display: block;
  max-width: 100%;
}

.page-about .about-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-about .breadcrumb {
  margin: 0 0 20px;
  font-size: 14px;
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .breadcrumb a {
  color: var(--bright-blue);
  font-weight: 700;
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  color: var(--orange);
}

.page-about .about-hero {
  display: flex;
  flex-direction: column;
  margin-bottom: 8px;
}

.page-about .about-hero-main {
  flex: 1;
  min-width: 0;
}

.page-about .about-eyebrow {
  margin: 0 0 8px;
  color: var(--bright-blue);
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: 0.12em;
  font-size: 13px;
}

.page-about h1 {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 52px);
  line-height: 1.13;
  color: var(--deep-blue);
  border-left: 6px solid var(--orange);
  padding-left: 16px;
  max-width: 900px;
}

.page-about .about-lead {
  margin: 0;
  max-width: 780px;
  font-size: 17px;
  color: rgba(26, 26, 46, 0.82);
}

.page-about .about-hero-aside {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: auto;
  margin-top: 18px;
  padding: 8px 14px;
  background: var(--deep-blue);
  color: var(--white);
  border: 2px solid var(--deep-blue);
  box-shadow: var(--shadow);
}

.page-about .about-vertical {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 14px;
  letter-spacing: 0.08em;
}

.page-about .about-section {
  margin-top: 64px;
}

.page-about .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 28px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--deep-blue);
}

.page-about .section-index {
  color: var(--orange);
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 900;
  line-height: 1;
}

.page-about .section-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 4vw, 36px);
  color: var(--deep-blue);
  line-height: 1.2;
}

.page-about .section-note {
  margin-left: auto;
  padding: 4px 12px;
  background: var(--orange);
  border: 2px solid var(--deep-blue);
  color: var(--deep-blue);
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 900;
  box-shadow: 2px 2px 0 rgba(27, 58, 92, 0.2);
}

.page-about .story-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .story-media {
  border: 2px solid var(--deep-blue);
  box-shadow: var(--shadow);
  background: var(--deep-blue);
  overflow: hidden;
  aspect-ratio: 3 / 2;
}

.page-about .story-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .story-content p {
  margin: 0 0 16px;
  font-size: 16px;
}

.page-about .story-content a,
.page-about .breadcrumb a {
  color: var(--bright-blue);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .story-content a:hover,
.page-about .breadcrumb a:hover {
  color: var(--orange);
}

.page-about .contact-mail {
  color: var(--deep-blue);
  font-weight: 700;
}

.page-about .journey-media {
  border: 2px solid var(--deep-blue);
  box-shadow: var(--shadow);
  overflow: hidden;
  aspect-ratio: 8 / 3;
  background: var(--deep-blue);
  margin-bottom: 32px;
}

.page-about .journey-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .timeline-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 36px;
  padding-left: 32px;
  position: relative;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 8px;
  bottom: -28px;
  width: 2px;
  background: var(--deep-blue);
  opacity: 0.4;
}

.page-about .timeline-item:last-child::before {
  content: none;
}

.page-about .timeline-stage {
  font-family: var(--font-head);
  font-weight: 900;
  color: var(--sky-blue);
  font-size: 16px;
  letter-spacing: 0.02em;
}

.page-about .timeline-card {
  position: relative;
  background: var(--white);
  border: 2px solid var(--deep-blue);
  box-shadow: var(--shadow);
  padding: 22px 22px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .timeline-card::after {
  content: "";
  position: absolute;
  right: -2px;
  bottom: -2px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 0 24px 24px;
  border-color: transparent transparent var(--orange) transparent;
}

.page-about .timeline-dot {
  position: absolute;
  left: -28px;
  top: 22px;
  width: 16px;
  height: 16px;
  background: var(--orange);
  border: 2px solid var(--deep-blue);
  transform: rotate(45deg);
  transition: transform 0.2s ease, background-color 0.2s ease;
  z-index: 1;
}

.page-about .timeline-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 20px;
  color: var(--deep-blue);
  line-height: 1.3;
}

.page-about .timeline-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

.page-about .timeline-item:hover .timeline-card {
  transform: translateY(-4px);
  box-shadow: 6px 6px 0 rgba(27, 58, 92, 0.35);
}

.page-about .timeline-item:hover .timeline-dot {
  transform: rotate(45deg) scale(1.2);
  background-color: var(--green);
}

.page-about .capability-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .capability-card {
  background: var(--white);
  border: 2px solid var(--deep-blue);
  border-top: 6px solid var(--orange);
  box-shadow: var(--shadow);
  padding: 24px;
}

.page-about .capability-card h3 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 22px;
  color: var(--deep-blue);
}

.page-about .capability-card p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.75;
}

.page-about .capability-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  align-content: start;
}

.page-about .metric-item {
  background: var(--deep-blue);
  color: var(--white);
  border: 2px solid var(--deep-blue);
  box-shadow: 4px 4px 0 rgba(27, 58, 92, 0.2);
  padding: 18px 14px;
}

.page-about .metric-item:first-child {
  background: var(--orange);
  color: var(--deep-blue);
}

.page-about .metric-num {
  display: block;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 44px;
  line-height: 1;
}

.page-about .metric-item span {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.4;
}

.page-about .capability-media {
  margin-top: 32px;
  border: 2px solid var(--deep-blue);
  box-shadow: var(--shadow);
  overflow: hidden;
  aspect-ratio: 10 / 7;
  max-height: 460px;
  width: 100%;
  background: var(--deep-blue);
}

.page-about .capability-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .capability-details {
  margin-top: 16px;
  border-top: 2px solid rgba(27, 58, 92, 0.18);
  padding-top: 14px;
}

.page-about .capability-details summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 900;
  color: var(--deep-blue);
}

.page-about .capability-details summary::-webkit-details-marker {
  display: none;
}

.page-about .capability-details summary::before {
  content: "＋ ";
  color: var(--orange);
  font-weight: 900;
}

.page-about .capability-details[open] summary::before {
  content: "－ ";
}

.page-about .capability-details p {
  margin: 12px 0 0;
  font-size: 14px;
  color: rgba(26, 26, 46, 0.78);
}

.page-about .feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.page-about .feature-item {
  background: var(--white);
  border: 2px solid var(--deep-blue);
  border-top-width: 6px;
  border-top-color: var(--bright-blue);
  box-shadow: var(--shadow);
  padding: 18px;
}

.page-about .feature-item:nth-child(2) {
  border-top-color: var(--orange);
}

.page-about .feature-item:nth-child(3) {
  border-top-color: var(--sky-blue);
}

.page-about .feature-item:nth-child(4) {
  border-top-color: var(--green);
}

.page-about .feature-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 900;
  color: var(--deep-blue);
}

.page-about .feature-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
}

.page-about .about-commit {
  background: var(--deep-blue);
  color: var(--white);
  padding: 32px 24px;
  border: 2px solid var(--deep-blue);
  box-shadow: var(--shadow);
  margin-top: 64px;
}

.page-about .about-commit .section-head {
  border-bottom-color: rgba(255, 255, 255, 0.25);
}

.page-about .about-commit .section-head h2 {
  color: var(--white);
}

.page-about .promise-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 28px;
}

.page-about .promise-card {
  background: var(--white);
  color: var(--ink);
  border: 2px solid var(--deep-blue);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.22);
  padding: 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .promise-card:hover {
  transform: translateY(-4px);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.28);
}

.page-about .promise-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--orange);
  color: var(--deep-blue);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 28px;
  border: 2px solid var(--deep-blue);
  transform: rotate(-4deg);
  box-shadow: 3px 3px 0 rgba(27, 58, 92, 0.25);
}

.page-about .promise-card h3 {
  margin: 18px 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 22px;
  color: var(--deep-blue);
}

.page-about .promise-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(26, 26, 46, 0.82);
}

.page-about .commit-note {
  margin: 28px 0 0;
  padding: 14px 18px;
  border-left: 4px solid var(--orange);
  background: rgba(245, 166, 35, 0.14);
  color: rgba(255, 255, 255, 0.92);
  font-weight: 700;
  font-size: 16px;
}

.page-about .about-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 40px;
}

@media (min-width: 960px) {
  .page-about .about-wrap {
    padding: 0 32px;
  }

  .page-about .about-hero {
    flex-direction: row;
    align-items: stretch;
    gap: 40px;
  }

  .page-about .about-hero-aside {
    display: flex;
    flex: 0 0 110px;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    margin-top: 0;
    padding: 24px 12px;
    justify-content: center;
    align-items: center;
  }

  .page-about .about-vertical {
    font-size: 15px;
    letter-spacing: 0.18em;
  }

  .page-about .story-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 40px;
    align-items: center;
  }

  .page-about .timeline-item {
    grid-template-columns: 180px minmax(0, 1fr);
    column-gap: 40px;
    padding-left: 0;
  }

  .page-about .timeline-item::before {
    left: 199px;
  }

  .page-about .timeline-stage {
    text-align: right;
    padding-top: 24px;
  }

  .page-about .capability-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .feature-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .promise-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}