.page-about {
  --about-line: rgba(232, 195, 106, 0.34);
  --about-line-soft: rgba(159, 170, 196, 0.2);
  --about-panel: rgba(13, 23, 48, 0.88);
  --about-glow: rgba(71, 224, 208, 0.22);
  color: var(--paper);
  overflow: clip;
}

.page-about :where(h1, h2, h3, p, ul, ol, figure, dl, dd) {
  margin: 0;
}

.page-about :where(ul, ol) {
  padding: 0;
}

.page-about :where(.about-opening__main, .about-opening__aside, .about-origin__body, .about-reach__copy, .about-team__body, .about-cap, .about-ecosystem__copy, .about-next__intro) {
  min-width: 0;
}

.page-about p {
  color: var(--mist);
  line-height: 1.8;
}

.page-about h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.8vw, 3.3rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--paper);
  text-wrap: balance;
}

.page-about h3 {
  font-family: var(--font-display);
  font-size: clamp(1.08rem, 1.8vw, 1.42rem);
  font-weight: 700;
  line-height: 1.28;
  color: var(--paper);
}

.page-about .about-breadcrumb-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-block: clamp(20px, 3vw, 32px);
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-context {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-about .about-opening {
  display: grid;
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
  padding-block: clamp(44px, 7vw, 96px);
}

.page-about .about-opening h1 {
  max-width: 12em;
  margin-top: 18px;
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 7.2vw, 5.2rem);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: 0.015em;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-opening__lead {
  max-width: 41em;
  margin-top: 24px;
  color: var(--paper);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.85;
}

.page-about .about-opening__lead--secondary {
  margin-top: 14px;
  color: var(--mist);
  font-size: clamp(0.95rem, 1.2vw, 1.05rem);
}

.page-about .about-opening__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-about .about-opening__aside {
  position: relative;
  padding: clamp(24px, 4vw, 40px);
  border: 2px solid var(--gold);
  background: linear-gradient(145deg, rgba(22, 36, 74, 0.95), rgba(7, 11, 26, 0.96));
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .about-opening__aside::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(232, 195, 106, 0.14);
  pointer-events: none;
}

.page-about .about-opening__vertical {
  position: absolute;
  top: 28px;
  right: 14px;
  z-index: 1;
  display: none;
  color: var(--gold-soft);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.3em;
  opacity: 0.8;
}

.page-about .about-stamp {
  display: grid;
  gap: 4px;
  padding-right: 28px;
}

.page-about .about-stamp__year {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: clamp(3rem, 7vw, 5.2rem);
  line-height: 0.85;
  letter-spacing: 0.04em;
}

.page-about .about-stamp__label {
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
}

.page-about .about-opening__list {
  display: grid;
  gap: 0;
  margin-block: 28px;
  list-style: none;
}

.page-about .about-opening__list li {
  display: grid;
  gap: 3px;
  padding-block: 13px;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-opening__list li span:first-child {
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 1.03rem;
}

.page-about .about-opening__list li span:last-child {
  color: var(--mist);
  font-size: 0.86rem;
}

.page-about .about-opening__aside-note {
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  color: var(--gold-soft);
  font-size: 0.94rem;
  line-height: 1.65;
}

.page-about .about-origin {
  display: grid;
  gap: 24px;
  padding-block: clamp(40px, 6vw, 80px);
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-origin__side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.page-about .about-origin__side .vertical-note {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.28em;
}

.page-about .about-origin__body {
  max-width: 54rem;
}

.page-about .about-origin__body p {
  margin-top: 18px;
}

.page-about .about-principle {
  margin-top: 28px;
  padding: 20px 24px;
  border-left: 4px solid var(--gold);
  background: rgba(22, 36, 74, 0.48);
  color: var(--gold-soft);
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 2rem);
  line-height: 1.45;
}

.page-about .about-reach {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
  padding-block: clamp(44px, 7vw, 92px);
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-reach__visual {
  position: relative;
  min-height: 260px;
  padding: clamp(18px, 3vw, 30px);
  border: 2px solid var(--about-line);
  background:
    radial-gradient(circle at 70% 30%, rgba(71, 224, 208, 0.16), transparent 42%),
    linear-gradient(145deg, rgba(22, 36, 74, 0.9), rgba(7, 11, 26, 0.95));
  overflow: hidden;
}

.page-about .about-dotmap {
  display: block;
  width: 100%;
  height: auto;
  color: rgba(71, 224, 208, 0.62);
}

.page-about .about-dotmap__ridge {
  fill: none;
  stroke: var(--gold);
  stroke-width: 2;
  opacity: 0.75;
}

.page-about .about-dotmap__ridge--soft {
  stroke: var(--cyan);
  stroke-width: 1;
  opacity: 0.35;
}

.page-about .about-dotmap__node {
  fill: var(--cyan);
  stroke: var(--ink-night);
  stroke-width: 3;
}

.page-about .about-reach__badge {
  position: absolute;
  right: 18px;
  bottom: 18px;
  padding: 8px 12px;
  border: 1px solid var(--about-line);
  background: rgba(7, 11, 26, 0.78);
  color: var(--gold-soft);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
}

.page-about .about-reach__copy h2 {
  margin-top: 8px;
}

.page-about .about-reach__copy > p:not(.section-label) {
  margin-top: 16px;
}

.page-about .about-reach__list {
  display: grid;
  gap: 0;
  margin-top: 24px;
  list-style: none;
}

.page-about .about-reach__list li {
  display: grid;
  gap: 4px;
  padding-block: 13px;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-reach__list strong {
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 1.02rem;
}

.page-about .about-reach__list span {
  color: var(--mist);
  font-size: 0.9rem;
}

.page-about .about-team {
  display: grid;
  gap: clamp(28px, 5vw, 58px);
  align-items: start;
  padding-block: clamp(44px, 7vw, 92px);
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-team__media {
  position: relative;
  border: 2px solid var(--about-line);
  background: var(--ink-deep);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .about-team__media::before {
  content: "";
  position: absolute;
  inset: 12px;
  z-index: 1;
  border: 1px solid rgba(232, 195, 106, 0.24);
  pointer-events: none;
}

.page-about .about-team__media img,
.page-about .about-timeline__figure img,
.page-about .about-ecosystem__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-team__body h2 {
  margin-top: 8px;
}

.page-about .about-team__body > p:not(.section-label):not(.about-team__note) {
  margin-top: 16px;
}

.page-about .support-path {
  display: grid;
  gap: 0;
  margin-top: 28px;
}

.page-about .support-step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 22px;
}

.page-about .support-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 17px;
  top: 36px;
  bottom: 0;
  width: 1px;
  background: var(--about-line-soft);
}

.page-about .support-step__num {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--about-line);
  background: var(--ink-cloud);
  color: var(--gold);
  font-size: 0.78rem;
  position: relative;
  z-index: 1;
}

.page-about .support-step h3 {
  margin-bottom: 6px;
  font-size: 1.08rem;
}

.page-about .support-step p {
  font-size: 0.92rem;
}

.page-about .about-team__note {
  margin-top: 18px;
  padding-left: 14px;
  border-left: 2px solid var(--amber);
  color: var(--gold-soft);
  font-size: 0.9rem;
}

.page-about .about-timeline {
  padding-block: clamp(48px, 8vw, 100px);
  border-block: 1px solid var(--about-line);
  background: linear-gradient(180deg, rgba(13, 23, 48, 0.9), rgba(7, 11, 26, 0.24));
}

.page-about .about-section-head {
  display: grid;
  gap: 10px;
  max-width: 900px;
}

.page-about .about-section-head h2 {
  margin-top: 4px;
}

.page-about .about-section-head > p:not(.section-label) {
  max-width: 58em;
  margin-top: 4px;
}

.page-about .about-timeline__figure {
  position: relative;
  margin-top: 36px;
  border: 2px solid var(--about-line);
  background: var(--ink-deep);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .about-timeline__figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--about-line-soft);
  color: var(--mist);
  font-size: 0.82rem;
  line-height: 1.6;
}

.page-about .about-years {
  display: grid;
  gap: 0;
  margin-top: clamp(30px, 5vw, 54px);
  list-style: none;
}

.page-about .about-year {
  position: relative;
  margin-left: 9px;
  padding: 0 0 30px 28px;
  border-left: 1px solid var(--about-line);
}

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

.page-about .about-year::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 6px;
  width: 11px;
  height: 11px;
  border: 2px solid var(--ink-night);
  background: var(--gold);
  box-shadow: 0 0 0 1px var(--gold);
  transform: rotate(45deg);
}

.page-about .about-year__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-about .about-year__head .num {
  color: var(--gold);
  font-size: 1.4rem;
  letter-spacing: 0.06em;
}

.page-about .about-year h3 {
  margin-top: 10px;
}

.page-about .about-year p {
  margin-top: 8px;
  font-size: 0.94rem;
}

.page-about .about-capabilities {
  padding-block: clamp(44px, 7vw, 92px);
}

.page-about .about-matrix {
  display: grid;
  gap: 18px;
  margin-top: 32px;
}

.page-about .about-cap {
  padding: 24px;
  border: 2px solid var(--about-line);
  background: var(--ink-deep);
  box-shadow: var(--shadow-hard);
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}

.page-about .about-cap:hover,
.page-about .about-cap:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-4px);
}

.page-about .about-cap:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-about .about-cap__index {
  color: var(--gold);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
}

.page-about .about-cap h3 {
  margin: 12px 0 10px;
}

.page-about .about-cap p {
  font-size: 0.94rem;
}

.page-about .about-cap__more {
  max-height: none;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--about-line-soft);
  opacity: 1;
  overflow: hidden;
  transition: max-height 260ms var(--ease), opacity 220ms var(--ease), margin 220ms var(--ease), padding 220ms var(--ease);
}

.page-about .about-ecosystem {
  padding-block: clamp(48px, 8vw, 96px);
  border-block: 1px solid var(--about-line);
  background: linear-gradient(180deg, var(--ink-deep), rgba(13, 23, 48, 0.6));
}

.page-about .about-ecosystem__top {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-about .about-ecosystem__copy h2 {
  margin-top: 8px;
}

.page-about .about-ecosystem__copy p:not(.section-label) {
  margin-top: 16px;
}

.page-about .about-ecosystem__figure {
  border: 2px solid var(--about-line);
  background: var(--ink-night);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .about-vendor-cards {
  display: grid;
  gap: 14px;
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .about-vendor-card {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--about-line-soft);
  background: rgba(7, 11, 26, 0.5);
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}

.page-about .about-vendor-card:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .about-vendor-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-about .about-vendor-card h3 {
  margin: 16px 0 14px;
  font-size: 1.15rem;
}

.page-about .about-vendor-card dl {
  display: grid;
  gap: 10px;
}

.page-about .about-vendor-card dl div {
  display: grid;
  grid-template-columns: 4.6em minmax(0, 1fr);
  gap: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-vendor-card dt {
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

.page-about .about-vendor-card dd {
  color: var(--paper);
  font-size: 0.9rem;
  line-height: 1.6;
}

.page-about .about-assurance {
  padding-block: clamp(44px, 7vw, 92px);
}

.page-about .about-assurance__panel {
  position: relative;
  padding: clamp(24px, 4.5vw, 56px);
  border: 2px solid var(--gold);
  background: linear-gradient(135deg, rgba(122, 46, 63, 0.92), rgba(13, 23, 48, 0.98) 58%, rgba(7, 11, 26, 0.98));
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .about-assurance__panel::after {
  content: "信";
  position: absolute;
  right: -0.08em;
  bottom: -0.28em;
  color: rgba(244, 223, 166, 0.06);
  font-family: var(--font-display);
  font-size: clamp(8rem, 20vw, 18rem);
  font-weight: 900;
  line-height: 0.8;
  pointer-events: none;
}

.page-about .about-assurance__panel > * {
  position: relative;
  z-index: 1;
}

.page-about .about-assurance__panel h2 {
  max-width: 18em;
  margin-top: 8px;
}

.page-about .about-assurance__panel > p:not(.section-label) {
  max-width: 58em;
  margin-top: 16px;
}

.page-about .about-assurance__list {
  display: grid;
  gap: 0;
  margin-top: 28px;
  list-style: none;
}

.page-about .about-assurance__list li {
  display: grid;
  gap: 4px;
  padding-block: 14px;
  border-top: 1px solid rgba(232, 195, 106, 0.24);
}

.page-about .about-assurance__list strong {
  color: var(--gold-soft);
  font-family: var(--font-display);
  font-size: 1.02rem;
}

.page-about .about-assurance__list span {
  color: var(--paper);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-about .about-next {
  padding-block: clamp(44px, 7vw, 88px);
  border-top: 1px solid var(--about-line-soft);
}

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

.page-about .about-next__intro h2 {
  margin-top: 8px;
}

.page-about .about-next__intro p:not(.section-label) {
  margin-top: 16px;
}

.page-about .about-next__links {
  display: grid;
  gap: 10px;
}

.page-about .about-next__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 14px;
  align-items: center;
  padding: 16px 18px;
  border: 1px solid var(--about-line-soft);
  background: rgba(13, 23, 48, 0.6);
  color: var(--paper);
  text-decoration: none;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}

.page-about .about-next__link strong {
  font-family: var(--font-display);
  font-size: 1.06rem;
  color: var(--paper);
}

.page-about .about-next__link span {
  grid-column: 1;
  color: var(--mist);
  font-size: 0.85rem;
}

.page-about .about-next__link::after {
  content: "→";
  grid-column: 2;
  grid-row: 1 / span 2;
  color: var(--cyan);
  font-size: 1.2rem;
  transition: transform 220ms var(--ease);
}

.page-about .about-next__link:hover {
  border-color: var(--gold);
  transform: translateX(4px);
}

.page-about .about-next__link:hover::after {
  transform: translateX(4px);
}

@media (min-width: 720px) {
  .page-about .about-opening__vertical {
    display: block;
  }

  .page-about .about-opening__aside {
    padding-right: clamp(48px, 6vw, 64px);
  }

  .page-about .about-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-vendor-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-about .about-opening {
    grid-template-columns: minmax(0, 1.55fr) minmax(320px, 0.65fr);
  }

  .page-about .about-origin {
    grid-template-columns: minmax(140px, 0.5fr) minmax(0, 1.9fr);
  }

  .page-about .about-origin__side {
    position: sticky;
    top: 120px;
    align-self: start;
  }

  .page-about .about-reach {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }

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

  .page-about .about-cap {
    min-height: 330px;
  }

  .page-about .about-cap__more {
    max-height: 0;
    margin-top: 0;
    padding-top: 0;
    border-top-color: transparent;
    opacity: 0;
  }

  .page-about .about-cap:hover .about-cap__more,
  .page-about .about-cap:focus-visible .about-cap__more,
  .page-about .about-cap:focus-within .about-cap__more {
    max-height: 240px;
    margin-top: 16px;
    padding-top: 16px;
    border-top-color: var(--about-line-soft);
    opacity: 1;
  }

  .page-about .about-years {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
    border-top: 1px solid var(--about-line);
  }

  .page-about .about-year {
    margin-left: 0;
    padding: 34px 10px 0 0;
    border-left: 0;
  }

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

  .page-about .about-year::before {
    left: 0;
    top: -6px;
  }

  .page-about .about-ecosystem__top {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .page-about .about-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-about .about-vendor-cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-cap,
  .page-about .about-cap__more,
  .page-about .about-vendor-card,
  .page-about .about-next__link,
  .page-about .about-next__link::after {
    transition: none;
  }
}
<<<END>>>