.page-about {
  --about-line: rgba(143, 163, 196, .16);
  --about-line-soft: rgba(143, 163, 196, .09);
  --about-glow: rgba(53, 242, 214, .22);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 22px 0 46px;
}
.page-about .about-hero > .container {
  position: relative;
}
.page-about .about-hero__mark {
  display: none;
}
.page-about .about-hero__grid {
  display: grid;
  gap: 34px;
  margin-top: 28px;
}
.page-about .about-hero__main .eyebrow {
  color: var(--cyan);
  letter-spacing: .18em;
}
.page-about .about-hero__title {
  margin: 14px 0 20px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(33px, 5.6vw, 72px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--paper);
  transform-origin: left center;
}
.page-about .about-hero__main .lede {
  color: var(--steel);
  max-width: 62ch;
  margin: 0 0 26px;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero__side {
  border-top: 1px solid var(--about-line);
  padding-top: 20px;
}
.page-about .about-side__cap {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--steel);
}
.page-about .about-stats {
  margin: 0;
  display: grid;
  gap: 13px;
}
.page-about .about-stats__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--about-line-soft);
}
.page-about .about-stats dt {
  font-size: 13px;
  color: var(--steel);
}
.page-about .about-stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 23px;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: .02em;
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 34px 0 64px;
  }
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, .8fr);
    gap: 60px;
    align-items: end;
    margin-top: 34px;
  }
  .page-about .about-hero__title {
    transform: rotate(-1.4deg);
  }
  .page-about .about-hero__side {
    border-top: 0;
    border-left: 1px solid var(--about-line);
    padding: 4px 0 4px 28px;
  }
}
@media (min-width: 1200px) {
  .page-about .about-hero__mark {
    display: block;
    position: absolute;
    right: -6px;
    top: 96px;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .38em;
    text-transform: uppercase;
    color: rgba(143, 163, 196, .5);
    pointer-events: none;
  }
}

/* ---------- 章节头 ---------- */
.page-about .about-head {
  max-width: 780px;
  margin-bottom: 40px;
}
.page-about .about-head__idx {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--orange);
}
.page-about .about-head .section-title {
  margin: 0 0 16px;
  color: var(--paper);
}
.page-about .about-head .lede {
  margin: 0;
  color: var(--steel);
  max-width: 66ch;
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0 0 40px;
  position: relative;
  z-index: 0;
}
.page-about .about-figure .media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--about-line);
  background: var(--ink-2);
}
.page-about .about-figure .media__inner {
  display: block;
  overflow: hidden;
}
.page-about .about-figure .media__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.92) contrast(1.06);
  transition: transform .6s var(--ease);
}
.page-about .about-figure:hover .media__img {
  transform: scale(1.025);
}
.page-about .about-figure .media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: 7px 14px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--paper);
  background: rgba(6, 10, 20, .8);
  border-top: 1px solid rgba(53, 242, 214, .35);
  border-right: 1px solid rgba(53, 242, 214, .35);
}

/* ---------- 时间线 ---------- */
.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.page-about .tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 14px;
  bottom: 28px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--violet) 58%, rgba(140, 92, 255, 0) 100%);
  opacity: .65;
}
.page-about .tl__item {
  position: relative;
  padding-left: 38px;
  margin-bottom: 16px;
}
.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  width: 11px;
  height: 11px;
  background: var(--ink);
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
}
.page-about .tl__detail {
  background: var(--ink-2);
  border: 1px solid var(--about-line);
  border-left: 2px solid rgba(53, 242, 214, .3);
  padding: 16px 18px;
  transition: background .25s var(--ease), border-color .25s var(--ease);
}
.page-about .tl__detail:hover {
  background: var(--panel);
}
.page-about .tl__detail[open] {
  border-left-color: var(--cyan);
  background: var(--panel);
}
.page-about .tl__head {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "year hint"
    "title hint";
    gap: 5px 16px;
  align-items: center;
}
.page-about .tl__head::-webkit-details-marker {
  display: none;
}
.page-about .tl__head:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}
.page-about .tl__year {
  grid-area: year;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}
.page-about .tl__title {
  grid-area: title;
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}
.page-about .tl__hint {
  grid-area: hint;
  position: relative;
  width: 26px;
  height: 26px;
  border: 1px solid var(--about-line);
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.page-about .tl__hint::before,
.page-about .tl__hint::after {
  content: "";
  position: absolute;
  background: var(--steel);
  transition: transform .25s var(--ease), background .25s var(--ease);
}
.page-about .tl__hint::before {
  left: 50%;
  top: 7px;
  bottom: 7px;
  width: 1px;
  transform: translateX(-.5px);
}
.page-about .tl__hint::after {
  top: 50%;
  left: 7px;
  right: 7px;
  height: 1px;
  transform: translateY(-.5px);
}
.page-about .tl__detail[open] .tl__hint {
  border-color: var(--cyan);
  background: rgba(53, 242, 214, .08);
}
.page-about .tl__detail[open] .tl__hint::before {
  transform: translateX(-.5px) scaleY(0);
}
.page-about .tl__detail[open] .tl__hint::after {
  background: var(--cyan);
}
.page-about .tl__body {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--about-line-soft);
}
.page-about .tl__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel);
  max-width: 62ch;
}
.page-about .tl__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 214, .4);
}

@media (min-width: 860px) {
  .page-about .tl__item {
    padding-left: 52px;
    margin-bottom: 18px;
  }
  .page-about .tl__detail {
    padding: 20px 24px;
  }
  .page-about .tl__title {
    font-size: 20px;
  }
  .page-about .tl__body p {
    font-size: 16px;
  }
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: 16px;
  margin-bottom: 46px;
}
.page-about .team-card {
  --cut: 20px;
  position: relative;
  padding: 26px 22px 30px;
  background: linear-gradient(158deg, var(--panel) 0%, var(--ink-2) 100%);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  transition: transform .22s var(--ease);
}
.page-about .team-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--cyan);
}
.page-about .team-card--violet::before {
  background: var(--violet);
}
.page-about .team-card--orange::before {
  background: var(--orange);
}
.page-about .team-card:hover {
  transform: translateY(-4px);
}
.page-about .team-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 44px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
  margin-bottom: 14px;
}
.page-about .team-card--violet .team-card__num {
  color: var(--violet);
}
.page-about .team-card--orange .team-card__num {
  color: var(--orange);
}
.page-about .team-card__title {
  margin: 0 0 10px;
  font-size: 20px;
  color: var(--paper);
}
.page-about .team-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .team-process {
  display: grid;
  gap: 28px;
  align-items: center;
}
.page-about .team-process__text h3 {
  margin: 0 0 12px;
  font-size: 24px;
  color: var(--paper);
  line-height: 1.3;
}
.page-about .team-process__text p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--steel);
  max-width: 58ch;
}
.page-about .team-process .about-figure {
  margin: 0;
}

@media (min-width: 760px) {
  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}
@media (min-width: 940px) {
  .page-about .team-process {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    gap: 52px;
  }
}

/* ---------- 案例 ---------- */
.page-about .case-layout {
  display: grid;
  gap: 20px;
}
.page-about .case-tags {
  background: var(--ink-2);
  border-left: 2px solid var(--violet);
  padding: 24px 22px;
}
.page-about .case-tags__label {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--violet);
}
.page-about .case-tags__row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.page-about .case-tags__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel);
}
.page-about .case-feature {
  background: var(--ink-2);
  border: 1px solid var(--about-line);
  padding: 24px 22px 28px;
}
.page-about .case-feature__label {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--steel);
}
.page-about .case-feature__list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .case-feature__list li {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--about-line-soft);
}
.page-about .case-feature__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-about .case-feature__list strong {
  font-size: 15px;
  color: var(--cyan);
  letter-spacing: .02em;
}
.page-about .case-feature__list span {
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

@media (min-width: 880px) {
  .page-about .case-layout {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 28px;
    align-items: start;
  }
}

/* ---------- 服务 ---------- */
.page-about .svc {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--about-line);
}
.page-about .svc__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  padding: 26px 0;
  border-bottom: 1px solid var(--about-line);
}
.page-about .svc__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--orange);
  padding-top: 5px;
}
.page-about .svc__title {
  margin: 0 0 8px;
  font-size: 20px;
  color: var(--paper);
  line-height: 1.35;
}
.page-about .svc__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel);
  max-width: 64ch;
}
.page-about .svc__foot {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--steel);
}
.page-about .svc__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 214, .4);
}
@media (min-width: 880px) {
  .page-about .svc__item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 28px;
    padding: 32px 10px;
    transition: background .25s var(--ease);
  }
  .page-about .svc__item:hover {
    background: linear-gradient(90deg, rgba(53, 242, 214, .07), rgba(53, 242, 214, 0) 72%);
  }
  .page-about .svc__title {
    font-size: 22px;
  }
}

/* ---------- 生态 ---------- */
.page-about .eco-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  margin-bottom: 36px;
}
.page-about .eco-cell {
  background: var(--ink);
  padding: 22px 16px;
  transition: background .25s var(--ease);
}
.page-about .eco-cell:hover {
  background: var(--panel);
}
.page-about .eco-cell__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--cyan);
  margin-bottom: 8px;
}
.page-about .eco-cell__label {
  display: block;
  font-size: 12px;
  line-height: 1.55;
  color: var(--steel);
}
.page-about .eco-body {
  display: grid;
  gap: 30px;
  align-items: start;
}
.page-about .eco-honor {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}
.page-about .eco-honor li {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--about-line-soft);
}
.page-about .eco-honor li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-about .eco-honor__year {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
  padding-top: 3px;
}
.page-about .eco-honor__text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}
.page-about .about-figure--eco {
  margin: 0;
}

@media (min-width: 760px) {
  .page-about .eco-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (min-width: 1000px) {
  .page-about .eco-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
  .page-about .eco-body {
    grid-template-columns: minmax(0, 1fr) minmax(0, .95fr);
    gap: 48px;
  }
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding-bottom: 88px;
}
.page-about .cta-panel {
  --cut: 26px;
  padding: 36px 24px 40px;
  background:
    radial-gradient(120% 140% at 88% 0%, rgba(140, 92, 255, .28) 0%, rgba(140, 92, 255, 0) 62%),
    linear-gradient(150deg, rgba(53, 242, 214, .1) 0%, rgba(6, 10, 20, 0) 55%),
    var(--ink-2);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  border-left: 2px solid var(--orange);
}
.page-about .cta-panel__idx {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--orange);
}
.page-about .cta-panel h2 {
  margin: 0 0 14px;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.15;
  color: var(--paper);
}
.page-about .cta-panel p {
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--steel);
  max-width: 60ch;
}
.page-about .cta-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
@media (min-width: 900px) {
  .page-about .cta-panel {
    --cut: 34px;
    padding: 54px 56px 58px;
  }
  .page-about .about-cta {
    padding-bottom: 120px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-figure .media__img,
  .page-about .team-card,
  .page-about .eco-cell,
  .page-about .tl__hint::before,
  .page-about .tl__hint::after {
    transition: none;
  }
  .page-about .about-figure:hover .media__img,
  .page-about .team-card:hover {
    transform: none;
  }
  .page-about .about-hero__title {
    transform: none;
  }
}
<<<END>>>