.page-about {
  background-color: var(--c-cool);
  overflow-x: hidden;
}

.page-about .about-section {
  scroll-margin-top: 72px;
  margin-top: 56px;
}

.page-about .page-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-light);
  margin-bottom: 20px;
}

.page-about .page-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  font-size: clamp(28px, 6vw, 52px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  border-top: 6px solid var(--c-ink);
  border-bottom: 1px solid var(--c-line);
  padding-top: 18px;
  padding-bottom: 18px;
}

.page-about .about-title-divider {
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--c-primary);
}

.page-about .about-lead {
  max-width: 760px;
  margin: 20px 0 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-mid);
}

.page-about .about-toc {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--c-ink);
  color: var(--c-white);
  padding: 18px 20px;
  margin-top: 28px;
}

.page-about .about-toc-label {
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--c-primary);
  white-space: nowrap;
}

.page-about .about-toc-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-toc-link {
  color: var(--c-white);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.page-about .about-toc-link:hover,
.page-about .about-toc-link.is-active {
  color: var(--c-primary-bright);
  border-bottom-color: var(--c-primary);
}

.page-about .about-intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 32px;
}

.page-about .about-intro-copy .about-intro-main {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.75;
  color: var(--c-ink);
  margin: 0 0 16px;
}

.page-about .about-intro-copy > p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-mid);
  margin: 0 0 16px;
}

.page-about .about-intro-points {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-intro-points li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-primary);
  font-weight: 600;
  font-size: 15px;
  color: var(--c-ink);
}

.page-about .about-intro-points .text-mono {
  color: var(--c-light);
  font-size: 13px;
}

.page-about .about-intro-img {
  position: relative;
  margin: 0;
  align-self: center;
}

.page-about .about-intro-img img {
  display: block;
  width: 100%;
  max-width: 400px;
  height: auto;
  background: var(--c-white);
}

.page-about .about-intro-img .img-tag {
  position: absolute;
  left: 0;
  bottom: 0;
}

.page-about .about-milestone-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 32px;
}

.page-about .about-milestone-img {
  position: relative;
  margin: 0;
}

.page-about .about-milestone-img img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-milestone-img .img-tag {
  position: absolute;
  left: 0;
  bottom: 0;
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 12px;
  width: 2px;
  background: var(--c-line);
}

.page-about .about-timeline-item {
  position: relative;
  padding: 0 0 28px 44px;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-white);
  border: 3px solid var(--c-ink);
  transition: background 0.25s, border-color 0.25s;
}

.page-about .about-timeline-item:hover::before {
  background: var(--c-primary);
  border-color: var(--c-primary);
}

.page-about .about-year {
  display: block;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-ink);
  margin-bottom: 10px;
  transition: color 0.25s;
}

.page-about .about-timeline-item:hover .about-year {
  color: var(--c-primary);
}

.page-about .about-timeline-body {
  background: var(--c-white);
  border-left: 4px solid var(--c-primary);
  padding: 16px 18px;
}

.page-about .about-timeline-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--c-ink);
}

.page-about .about-timeline-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-mid);
}

.page-about .about-business-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 32px;
}

.page-about .about-business-card {
  position: relative;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  padding: 26px 22px;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
  transition: background 0.25s, border-color 0.25s;
}

.page-about .about-business-card:hover {
  background: var(--c-ink);
  border-color: var(--c-ink);
}

.page-about .about-card-index {
  display: inline-block;
  background: var(--c-ink);
  color: var(--c-white);
  font-size: 13px;
  padding: 4px 10px;
  margin-bottom: 16px;
  transition: background 0.25s;
}

.page-about .about-business-card:hover .about-card-index {
  background: var(--c-primary);
}

.page-about .about-business-card h3 {
  font-size: 20px;
  font-weight: 800;
  margin: 0 0 10px;
  color: var(--c-ink);
  transition: color 0.25s;
}

.page-about .about-business-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-mid);
  transition: color 0.25s;
}

.page-about .about-business-card:hover h3,
.page-about .about-business-card:hover p {
  color: var(--c-white);
}

.page-about .about-business-img {
  position: relative;
  margin: 28px 0 0;
}

.page-about .about-business-img img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-business-img .img-tag {
  position: absolute;
  left: 0;
  bottom: 0;
}

.page-about .about-cert-section {
  margin-top: 56px;
}

.page-about .about-cert {
  background: var(--c-ink);
  color: var(--c-white);
  padding: 32px 24px;
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
  margin-top: 32px;
}

.page-about .about-cert-main h3 {
  font-size: 26px;
  font-weight: 800;
  margin: 18px 0 12px;
  color: var(--c-white);
}

.page-about .about-cert-main p {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 24px;
  max-width: 520px;
}

.page-about .about-cert-list {
  margin: 0;
}

.page-about .about-cert-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.page-about .about-cert-row:last-child {
  border-bottom: none;
}

.page-about .about-cert-row dt {
  font-size: 13px;
  color: var(--c-primary-bright);
}

.page-about .about-cert-row dd {
  margin: 0;
  font-size: 14px;
  color: var(--c-white);
  text-align: right;
}

.page-about .about-cert-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.page-about .about-stat {
  background: var(--c-charcoal);
  padding: 20px 12px;
  text-align: center;
  border-top: 3px solid var(--c-primary);
  transition: background 0.25s, border-top-color 0.25s;
}

.page-about .about-stat:hover {
  background: var(--c-mid);
  border-top-color: var(--c-primary-bright);
}

.page-about .about-stat .stat-num {
  display: block;
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-white);
}

.page-about .about-stat .stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--c-primary-bright);
}

.page-about .about-cta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 48px;
  padding-bottom: 48px;
}

.page-about .about-cta-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-left: 5px solid var(--c-ink);
  text-decoration: none;
  color: var(--c-ink);
  padding: 20px 18px;
  transition: background 0.25s, border-left-color 0.25s, color 0.25s;
}

.page-about .about-cta-card .text-mono {
  font-size: 14px;
  color: var(--c-light);
  transition: color 0.25s;
}

.page-about .about-cta-label {
  flex: 1;
  font-weight: 700;
  font-size: 15px;
}

.page-about .about-cta-arrow {
  font-size: 22px;
  font-weight: 700;
  color: var(--c-primary);
  transition: transform 0.25s;
}

.page-about .about-cta-card:hover {
  background: var(--c-primary);
  border-left-color: var(--c-primary);
  color: var(--c-white);
}

.page-about .about-cta-card:hover .text-mono {
  color: var(--c-white);
}

.page-about .about-cta-card:hover .about-cta-arrow {
  transform: translateX(4px);
}

@media (min-width: 768px) {
  .page-about .about-toc {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-about .about-intro-grid {
    grid-template-columns: 1.4fr 1fr;
    gap: 40px;
    align-items: center;
  }

  .page-about .about-timeline-body p {
    font-size: 15px;
  }

  .page-about .about-business-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .page-about .about-cert {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 36px;
    align-items: center;
  }

  .page-about .about-cta {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (min-width: 992px) {
  .page-about .about-toc {
    padding: 16px 28px;
  }

  .page-about .about-milestone-head {
    grid-template-columns: 1fr 380px;
    gap: 40px;
    align-items: center;
  }

  .page-about .about-milestone-img img {
    height: 210px;
    object-fit: cover;
  }

  .page-about .about-timeline-item {
    display: grid;
    grid-template-columns: 220px 1fr;
    column-gap: 64px;
    padding: 0 0 40px;
  }

  .page-about .about-timeline::before {
    left: 220px;
    top: 8px;
  }

  .page-about .about-timeline-item::before {
    left: calc(220px - 6px);
  }

  .page-about .about-year {
    text-align: right;
    padding-right: 40px;
    font-size: 42px;
    margin-bottom: 0;
    padding-top: 4px;
  }

  .page-about .about-timeline-body {
    padding: 20px 24px;
  }

  .page-about .about-business-grid {
    grid-template-columns: repeat(12, 1fr);
    gap: 28px;
  }

  .page-about .about-business-card:nth-child(1) {
    grid-column: 1 / 7;
  }

  .page-about .about-business-card:nth-child(2) {
    grid-column: 7 / 13;
  }

  .page-about .about-business-card:nth-child(3) {
    grid-column: 2 / 12;
  }

  .page-about .about-business-card:nth-child(4) {
    grid-column: 1 / 6;
  }

  .page-about .about-business-card:nth-child(5) {
    grid-column: 6 / 13;
  }

  .page-about .about-business-img img {
    max-height: 320px;
    object-fit: cover;
  }

  .page-about .about-cert {
    gap: 48px;
    padding: 48px 44px;
    clip-path: polygon(0 0, calc(100% - 48px) 0, 100% 48px, 100% 100%, 48px 100%, 0 calc(100% - 48px));
  }

  .page-about .about-cert-stats {
    gap: 16px;
  }

  .page-about .about-cta {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }
}