.page-about {
  --about-gap: clamp(20px, 3vw, 36px);
  background: var(--blue-900);
  color: var(--gray-100);
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 46px) 0 clamp(44px, 6vw, 80px);
  background:
    radial-gradient(120% 100% at 88% -20%, rgba(35, 224, 208, 0.18), rgba(35, 224, 208, 0) 58%),
    radial-gradient(90% 80% at -10% 8%, rgba(255, 106, 31, 0.16), rgba(255, 106, 31, 0) 60%),
    var(--blue-900);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: clamp(20px, 4vw, 46px);
  background: var(--paper);
  clip-path: polygon(0 100%, 100% 18%, 100% 100%);
  pointer-events: none;
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-hero-copy {
  min-width: 0;
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-about .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--line-500);
}

.page-about .breadcrumb li + li::before {
  content: "/";
  color: var(--line-500);
}

.page-about .breadcrumb a {
  color: var(--cyan-400);
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  color: var(--orange-200);
}

.page-about .about-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-about h1 {
  margin: 0 0 18px;
  max-width: 20ch;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.page-about .about-lead {
  margin: 0 0 clamp(24px, 3vw, 32px);
  max-width: 46ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: #c6d2de;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: 0 0 clamp(24px, 3vw, 34px);
}

.page-about .about-stat {
  border-top: 2px solid var(--orange-500);
  padding-top: 10px;
  min-width: 0;
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--orange-500);
}

.page-about .about-stat-label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  line-height: 1.55;
  color: #93a2b2;
}

.page-about .about-ruler {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  border-top: 1px dashed rgba(233, 237, 242, 0.24);
  padding-top: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: #7c8b9b;
}

.page-about .about-ruler span {
  position: relative;
}

.page-about .about-ruler span::before {
  content: "";
  position: absolute;
  top: -19px;
  left: 0;
  width: 2px;
  height: 6px;
  background: var(--cyan-400);
}

.page-about .about-hero-media {
  margin: 0;
  min-width: 0;
}

.page-about .about-hero-media .media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-l) 6px var(--radius-l) 6px;
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: inherit;
}

.page-about .media-label {
  position: absolute;
  left: 14px;
  bottom: 14px;
  display: inline-block;
  padding: 5px 10px;
  border-radius: 4px;
  background: rgba(7, 26, 47, 0.74);
  color: var(--cyan-400);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-about .about-block {
  padding-block: clamp(44px, 6vw, 78px);
}

.page-about .about-origin {
  background: var(--paper);
  color: var(--blue-900);
}

.page-about .about-desk {
  background: var(--blue-800);
  color: var(--gray-100);
}

.page-about .about-standard {
  background: var(--gray-100);
  color: var(--blue-900);
}

.page-about .about-columns {
  background: var(--blue-900);
  color: var(--gray-100);
}

.page-about .about-data {
  background: linear-gradient(180deg, var(--blue-800), var(--blue-900));
  color: var(--gray-100);
}

.page-about .about-growth {
  background: var(--blue-900);
  color: var(--gray-100);
}

.page-about .about-partners {
  background: var(--paper);
  color: var(--blue-900);
}

.page-about .about-cta {
  background: linear-gradient(120deg, var(--blue-700), var(--blue-900));
  color: #ffffff;
}

.page-about .about-head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 3vw, 38px);
}

.page-about .section-flag {
  display: block;
  width: 46px;
  height: 2px;
  margin-bottom: 16px;
  background: var(--orange-500);
}

.page-about .section-title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(24px, 3.3vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--blue-900);
}

.page-about .about-head-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #4c5c6d;
}

.page-about .about-head--dark .section-title {
  color: #ffffff;
}

.page-about .about-head--dark .about-head-note {
  color: #a9b6c4;
}

.page-about .about-para {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.9;
  color: #33465a;
}

.page-about .about-para:last-child {
  margin-bottom: 0;
}

.page-about .about-para--lead {
  font-size: clamp(17px, 1.9vw, 19px);
  line-height: 1.85;
  color: var(--blue-700);
  font-weight: 600;
}

.page-about .about-para--dark {
  color: #b9c6d3;
  max-width: 62ch;
  margin-bottom: 24px;
}

.page-about .about-origin-body {
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
}

.page-about .about-flow {
  display: grid;
  gap: 12px;
  margin: 0 0 clamp(28px, 4vw, 44px);
  padding: 0;
  list-style: none;
}

.page-about .about-flow-step {
  position: relative;
  padding: 18px 16px 16px;
  border-radius: var(--radius-m) 4px var(--radius-m) 4px;
  background: var(--blue-700);
  border-top: 2px solid rgba(35, 224, 208, 0.22);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-about .about-flow-step:hover,
.page-about .about-flow-step:focus-within {
  transform: translateY(-3px);
  border-top-color: var(--orange-500);
}

.page-about .about-flow-num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan-400);
}

.page-about .about-flow-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #ffffff;
}

.page-about .about-flow-step p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.72;
  color: #a9b6c4;
}

.page-about .about-flow-time {
  display: inline-block;
  padding: 4px 9px;
  border-radius: 4px;
  background: rgba(35, 224, 208, 0.12);
  color: var(--cyan-400);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
}

.page-about .about-desk-media {
  margin: 0;
}

.page-about .about-desk-media .media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-m) 6px var(--radius-m) 6px;
}

.page-about .about-desk-media img {
  display: block;
  width: 100%;
  max-height: 380px;
  height: auto;
  object-fit: cover;
  border-radius: inherit;
}

.page-about .about-standard-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-promise {
  margin: 0;
  padding: 0;
  list-style: none;
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--paper);
}

.page-about .about-promise-item {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 16px 18px;
}

.page-about .about-promise-item + .about-promise-item {
  border-top: 1px solid rgba(7, 26, 47, 0.1);
}

.page-about .about-promise-item:first-child {
  border-top: 3px solid var(--orange-500);
}

.page-about .about-promise-key {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--blue-600);
}

.page-about .about-promise-val {
  font-size: 14.5px;
  line-height: 1.7;
  color: #33465a;
}

.page-about .about-promise-val b {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--blue-900);
}

.page-about .about-matrix {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-matrix > li {
  min-width: 0;
}

.page-about .about-cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  min-height: 118px;
  padding: 16px 15px;
  border-radius: var(--radius-m) 4px var(--radius-m) 4px;
  border-left: 2px solid var(--cyan-400);
  background: var(--blue-700);
  color: inherit;
  text-decoration: none;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-cell--topic {
  border-left-color: var(--orange-500);
}

.page-about .about-cell:hover,
.page-about .about-cell:focus-visible {
  transform: translateY(-2px);
  background: var(--blue-600);
}

.page-about .about-cell .index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--orange-200);
}

.page-about .about-cell h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
}

.page-about .about-cell p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.68;
  color: #a9b6c4;
}

.page-about .about-data-panel {
  padding: clamp(22px, 3.6vw, 44px);
  border-radius: var(--radius-m) 6px var(--radius-m) 6px;
  background: var(--blue-700);
  border: 1px solid rgba(35, 224, 208, 0.2);
}

.page-about .about-data-chain {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(22px, 3vw, 30px);
  padding: 0;
  list-style: none;
}

.page-about .about-data-chain li {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(35, 224, 208, 0.1);
  color: var(--cyan-400);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-about .about-data-chain li:last-child {
  background: rgba(255, 106, 31, 0.16);
  color: var(--orange-200);
}

.page-about .about-data-nums {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 14px;
}

.page-about .about-data-num {
  border-top: 2px solid var(--cyan-400);
  padding-top: 12px;
}

.page-about .about-data-figure {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1.1;
  color: #ffffff;
}

.page-about .about-data-cap {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.55;
  color: #a9b6c4;
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 6px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: repeating-linear-gradient(
    180deg,
    rgba(35, 224, 208, 0.5) 0 6px,
    rgba(35, 224, 208, 0) 6px 14px
  );
}

.page-about .about-timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 14px;
  padding: 0 0 26px 28px;
}

.page-about .about-timeline li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--blue-900);
  border: 2px solid var(--cyan-400);
}

.page-about .about-timeline li:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline li:last-child::before {
  background: var(--orange-500);
  border-color: var(--orange-500);
}

.page-about .about-time-year {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--orange-500);
}

.page-about .about-time-body h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: #ffffff;
}

.page-about .about-time-body p {
  margin: 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: #a9b6c4;
}

.page-about .about-partners-media {
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-about .about-partners-media img {
  display: block;
  width: 100%;
  max-height: 360px;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-l) 6px var(--radius-l) 6px;
}

.page-about .about-partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .about-partner {
  padding: 20px 18px;
  border-radius: var(--radius-m) 4px var(--radius-m) 4px;
  background: var(--gray-100);
  border-top: 2px solid var(--blue-600);
}

.page-about .about-partner:nth-child(2) {
  border-top-color: var(--cyan-400);
}

.page-about .about-partner:nth-child(3) {
  border-top-color: var(--orange-500);
}

.page-about .about-partner-num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--blue-900);
}

.page-about .about-partner h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--blue-900);
}

.page-about .about-partner p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: #4c5c6d;
}

.page-about .about-cta-inner {
  display: grid;
  gap: 18px;
}

.page-about .about-cta p {
  margin: 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.8;
  color: #c6d2de;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-matrix {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .about-flow-step:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -8px;
    top: 26px;
    width: 8px;
    height: 2px;
    background: rgba(35, 224, 208, 0.5);
  }
}

@media (min-width: 860px) {
  .page-about .about-origin-body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-para--lead {
    grid-column: 1 / -1;
  }

  .page-about .about-standard-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-about .about-matrix {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-cta-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-flow-step,
  .page-about .about-cell {
    transition: none;
  }

  .page-about .about-flow-step:hover,
  .page-about .about-flow-step:focus-within,
  .page-about .about-cell:hover,
  .page-about .about-cell:focus-visible {
    transform: none;
  }
}