.page-about {
  --about-body: rgba(242, 232, 213, .78);
  --about-soft: rgba(140, 163, 184, .72);
  --about-line-soft: rgba(27, 53, 80, .85);
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font-sans);
  overflow-x: clip;
}

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

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-block: 26px 4px;
  font-size: 12px;
  letter-spacing: .09em;
  color: var(--about-soft);
}

.page-about .about-crumbs a {
  color: var(--about-soft);
  text-decoration: none;
}

.page-about .about-crumbs a:hover {
  color: var(--mint);
}

.page-about .about-crumbs [aria-current="page"] {
  color: var(--cream);
}

.page-about .about-crumbs__sep {
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-about .about-masthead {
  position: relative;
  padding-block: clamp(24px, 5vw, 48px) clamp(46px, 8vw, 92px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 100% at 92% -10%, rgba(51, 240, 192, .13), transparent 58%),
    linear-gradient(175deg, #06101D 0%, #08161F 60%, #071320 100%);
  overflow: hidden;
}

.page-about .about-masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(140, 163, 184, .075) 1px, transparent 1px),
    linear-gradient(0deg, rgba(140, 163, 184, .05) 1px, transparent 1px);
  background-size: 96px 96px;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 82%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 82%);
}

.page-about .about-masthead__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-masthead__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--about-soft);
}

.page-about .about-masthead__kicker-num {
  color: var(--mint);
}

.page-about .about-masthead__title {
  margin: 18px 0 0;
  max-width: 15em;
  font-size: clamp(2.1rem, 5.6vw, 4.6rem);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: .05em;
  color: var(--cream);
}

.page-about .about-masthead__lead {
  margin: 24px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .about-masthead__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid var(--line);
  font-size: 11.5px;
  letter-spacing: .11em;
  color: var(--about-soft);
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 0 100%);
}

.page-about .about-chip--mint {
  color: var(--mint);
  border-color: rgba(51, 240, 192, .38);
}

.page-about .about-chip--amber {
  color: var(--amber);
  border-color: rgba(255, 174, 43, .38);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  padding-block: clamp(52px, 8vw, 100px);
  border-top: 1px solid var(--line);
}

.page-about .about-masthead + .about-chapter {
  border-top: 0;
}

.page-about .about-narrow {
  max-width: 1000px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-about .about-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 14px;
}

.page-about .about-chapter__num {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--mint);
}

.page-about .about-chapter__label {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--about-soft);
}

.page-about .about-h2 {
  margin: 0 0 18px;
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  font-weight: 400;
  line-height: 1.28;
  letter-spacing: .06em;
  color: var(--cream);
}

.page-about .about-p {
  margin: 0 0 16px;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .about-p--lead {
  max-width: 58ch;
  margin-bottom: 26px;
}

.page-about .about-link {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 240, 192, .4);
  padding-bottom: 2px;
}

.page-about .about-link:hover {
  color: var(--mint-soft);
  border-bottom-color: var(--mint-soft);
}

/* ---------- 01 起点 ---------- */
.page-about .about-intro {
  display: grid;
  gap: 30px;
}

@media (min-width: 900px) {
  .page-about .about-intro {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
}

.page-about .about-intro__text {
  max-width: 66ch;
}

.page-about .about-figures {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-figures__item {
  background: var(--panel);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-figures__num {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  line-height: 1;
  color: var(--amber);
  letter-spacing: .02em;
}

.page-about .about-figures__label {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--about-soft);
}

.page-about .about-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

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

.page-about .about-figure--wide {
  margin-top: clamp(32px, 5vw, 52px);
}

.page-about .about-figure--wide img {
  aspect-ratio: 21 / 9;
  filter: saturate(.86) contrast(1.06) brightness(.92);
}

.page-about .about-figure--square img {
  aspect-ratio: 3 / 2;
  filter: saturate(.86) contrast(1.06) brightness(.92);
}

.page-about .about-figure--flow {
  margin-top: clamp(30px, 5vw, 46px);
}

.page-about .about-figure--flow img {
  aspect-ratio: 3 / 2;
  filter: saturate(.86) contrast(1.06) brightness(.92);
}

.page-about .about-figure__caption {
  padding: 12px 18px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--about-soft);
  border-top: 1px solid var(--line);
  background: rgba(12, 29, 49, .6);
}

.page-about .about-timeline__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-about .about-timeline__jump-link {
  padding: 6px 12px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--about-soft);
  text-decoration: none;
  border: 1px solid var(--line);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-timeline__jump-link:hover {
  color: var(--amber);
  border-color: rgba(255, 174, 43, .5);
}

.page-about .about-timeline {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--mint) 0%, var(--amber) 42%, var(--line) 100%);
  opacity: .45;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 34px 34px;
  scroll-margin-top: 120px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 13px;
  height: 13px;
  background: var(--ink);
  border: 1px solid var(--amber);
  transform: rotate(45deg);
}

.page-about .about-timeline__year {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--amber);
  margin-bottom: 6px;
}

.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-size: clamp(1.02rem, 1.8vw, 1.18rem);
  font-weight: 500;
  letter-spacing: .05em;
  color: var(--cream);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-body);
}

/* ---------- 02 团队 ---------- */
.page-about .about-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 22px;
}

.page-about .about-filters [data-filter] {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--about-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  padding: 9px 15px;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-about .about-filters [data-filter]:hover {
  color: var(--mint-soft);
  border-color: rgba(51, 240, 192, .55);
}

.page-about .about-filters [data-filter][aria-pressed="true"] {
  color: var(--ink);
  background: var(--mint);
  border-color: var(--mint);
}

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

@media (min-width: 620px) {
  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-about .about-roles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-roles > [hidden] {
  display: none;
}

.page-about .about-role {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 20px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .about-role::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--mint);
}

.page-about .about-role:nth-child(2)::before {
  background: var(--amber);
}

.page-about .about-role:nth-child(3)::before {
  background: var(--mint-soft);
}

.page-about .about-role:nth-child(4)::before {
  background: var(--mist);
}

.page-about .about-role__meta {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--about-soft);
}

.page-about .about-role__count {
  color: var(--amber);
}

.page-about .about-role__title {
  margin: 0;
  font-size: 1.04rem;
  font-weight: 500;
  letter-spacing: .05em;
  color: var(--cream);
  line-height: 1.45;
}

.page-about .about-role__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .about-filter-empty {
  margin: 18px 0 0;
  font-size: 13px;
  color: var(--about-soft);
}

.page-about .about-filter-empty[hidden] {
  display: none;
}

.page-about .about-chapter--team .about-figure {
  margin-top: clamp(30px, 5vw, 48px);
}

/* ---------- 03 流程 ---------- */
.page-about .about-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 900px) {
  .page-about .about-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }
}

.page-about .about-flow__step {
  position: relative;
  padding: 30px 20px 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .about-flow__step::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, rgba(51, 240, 192, .85), rgba(51, 240, 192, 0));
}

.page-about .about-flow__step:last-child::after {
  background: linear-gradient(90deg, var(--mint), rgba(255, 174, 43, .6));
}

.page-about .about-flow__num {
  display: block;
  font-size: 30px;
  line-height: 1;
  letter-spacing: .04em;
  color: rgba(51, 240, 192, .32);
  margin-bottom: 12px;
}

.page-about .about-flow__title {
  margin: 0 0 9px;
  font-size: 1.06rem;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--cream);
}

.page-about .about-flow__text {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.8;
  color: var(--about-body);
}

/* ---------- 04 合作 ---------- */
.page-about .about-partners__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) {
  .page-about .about-partners__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-partners__stat {
  padding: 20px 18px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(12, 29, 49, .95), rgba(6, 16, 29, .9));
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-partners__num {
  font-size: clamp(1.8rem, 3.4vw, 2.4rem);
  line-height: 1;
  color: var(--mint);
}

.page-about .about-partners__unit {
  font-size: 12.5px;
  letter-spacing: .09em;
  color: var(--about-soft);
}

.page-about .about-partners__wall {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partners__tag {
  padding: 9px 15px;
  border: 1px solid var(--line);
  background: rgba(12, 29, 49, .72);
  font-size: 13px;
  letter-spacing: .07em;
  color: var(--cream);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
}

.page-about .about-partners__tag:nth-child(4n + 1) {
  border-color: rgba(51, 240, 192, .3);
}

.page-about .about-partners__tag:nth-child(4n + 3) {
  border-color: rgba(255, 174, 43, .28);
}

.page-about .about-partners__more {
  margin: 26px 0 0;
  font-size: 14px;
}

/* ---------- 05 场景 ---------- */
.page-about .about-scenes {
  display: grid;
  gap: 0;
  margin-top: 8px;
}

.page-about .about-scene {
  display: grid;
  gap: 10px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

@media (min-width: 880px) {
  .page-about .about-scene {
    grid-template-columns: 210px minmax(0, 1fr) 150px;
    align-items: start;
    gap: 34px;
    padding: 30px 0;
  }
}

.page-about .about-scene__title {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 500;
  letter-spacing: .06em;
  line-height: 1.5;
  color: var(--cream);
}

.page-about .about-scene__text {
  margin: 0;
  font-size: 14.6px;
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .about-scene__link {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--mint);
  text-decoration: none;
  white-space: nowrap;
}

.page-about .about-scene__link:hover {
  color: var(--mint-soft);
}

/* ---------- 06 版本 ---------- */
.page-about .about-version__grid {
  display: grid;
  gap: 26px;
  margin-top: 6px;
}

@media (min-width: 880px) {
  .page-about .about-version__grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 40px;
    align-items: start;
  }
}

.page-about .about-version__list {
  display: grid;
  gap: 0;
}

.page-about .about-version__row {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

@media (min-width: 620px) {
  .page-about .about-version__row {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
  }
}

.page-about .about-version__time {
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--amber);
  padding-top: 3px;
}

.page-about .about-version__title {
  margin: 0 0 7px;
  font-size: 1.02rem;
  font-weight: 500;
  letter-spacing: .05em;
  color: var(--cream);
}

.page-about .about-version__text {
  margin: 0;
  font-size: 14.4px;
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .about-rail {
  padding: 24px 22px;
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(12, 29, 49, .95), rgba(6, 16, 29, .85));
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-about .about-rail__title {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--mint);
}

.page-about .about-rail__text {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .about-rail__link {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--amber);
  text-decoration: none;
}

.page-about .about-rail__link:hover {
  color: var(--cream);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  position: relative;
  margin-top: clamp(20px, 4vw, 40px);
  padding-block: clamp(52px, 9vw, 92px);
  background:
    radial-gradient(120% 130% at 6% 0%, rgba(51, 240, 192, .12), transparent 55%),
    linear-gradient(118deg, #0A1826 0%, #0C2032 58%, #091A29 100%);
  border-top: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), calc(100% - 44px) 100%, 0 100%);
  overflow: hidden;
}

.page-about .about-cta__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-cta__kicker {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: .24em;
  color: var(--amber);
}

.page-about .about-cta__title {
  margin: 0 0 16px;
  max-width: 20em;
  font-size: clamp(1.45rem, 3.6vw, 2.3rem);
  font-weight: 400;
  line-height: 1.32;
  letter-spacing: .05em;
  color: var(--cream);
}

.page-about .about-cta__text {
  margin: 0 0 28px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  text-decoration: none;
  color: var(--mint);
  border: 1px solid rgba(51, 240, 192, .5);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-about .about-cta__btn:hover {
  color: var(--mint-soft);
  border-color: var(--mint-soft);
}

.page-about .about-cta__btn--solid {
  color: var(--ink);
  background: var(--mint);
  border-color: var(--mint);
}

.page-about .about-cta__btn--solid:hover {
  background: var(--mint-soft);
  color: var(--ink);
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}
<<<PAGE_CSS_END>>>
</main>