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

.page-about .about-link {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 230, 200, .45);
  padding-bottom: 1px;
  transition: color .2s ease, border-color .2s ease;
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ============ 首屏 ============ */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + 34px);
  padding-bottom: 56px;
  background:
    radial-gradient(115% 85% at 84% 4%, rgba(43, 230, 200, .13), transparent 60%),
    radial-gradient(90% 70% at 4% 100%, rgba(255, 90, 43, .07), transparent 62%),
    linear-gradient(178deg, #05130F 0%, #071B16 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -34%;
  width: 62vw;
  height: 62vw;
  max-width: 720px;
  max-height: 720px;
  border: 1px solid rgba(43, 230, 200, .10);
  border-radius: 46% 54% 38% 62% / 52% 40% 60% 48%;
  pointer-events: none;
}

.page-about .about-hero .breadcrumbs {
  position: relative;
  z-index: 2;
  margin-bottom: 34px;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .about-hero__years {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero__year-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(68px, 19vw, 118px);
  line-height: .84;
  letter-spacing: -0.04em;
  color: rgba(43, 230, 200, .14);
  -webkit-text-stroke: 1.5px var(--cyan);
  text-shadow: 0 0 42px rgba(43, 230, 200, .22);
}

.page-about .about-hero__year-cap {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--cyan);
  font-family: var(--font-body);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7.6vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  max-width: 20em;
}

.page-about .about-hero__body .lede {
  margin-top: 20px;
  max-width: 34em;
}

.page-about .about-hero__text {
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mute);
  max-width: 36em;
}

.page-about .about-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__side {
  display: none;
}

/* ============ 沿革时间轴 ============ */

.page-about .about-track {
  position: relative;
  background: linear-gradient(180deg, #071B16 0%, var(--night) 62%);
}

.page-about .about-track__head {
  max-width: 44em;
}

.page-about .about-track__lede {
  margin-top: 16px;
  color: var(--mute);
  font-size: 16px;
  line-height: 1.8;
}

.page-about .about-track__list {
  position: relative;
  margin-top: 42px;
  padding: 0;
  list-style: none;
}

.page-about .about-track__list::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 26px;
  width: 1px;
  background: linear-gradient(180deg, rgba(43, 230, 200, .55), rgba(43, 230, 200, .16) 70%, transparent);
}

.page-about .about-track__item {
  position: relative;
  display: grid;
  grid-template-columns: 23px minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 10px;
  padding-bottom: 32px;
  outline: none;
}

.page-about .about-track__dot {
  grid-column: 1;
  grid-row: 1;
  width: 11px;
  height: 11px;
  margin: 4px auto 0;
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(43, 230, 200, .10);
  transition: background .25s ease, box-shadow .25s ease;
}

.page-about .about-track__year {
  grid-column: 2;
  grid-row: 1;
  font-size: 15px;
  letter-spacing: .16em;
  color: var(--cyan);
  font-weight: 700;
}

.page-about .about-track__card {
  grid-column: 2;
  grid-row: 2;
  padding: 18px 20px;
  background: var(--grass);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: var(--r-card);
  transition: border-color .25s ease, transform .25s ease, background .25s ease;
}

.page-about .about-track__card .h3 {
  margin: 0;
  font-size: 19px;
}

.page-about .about-track__card > p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: #C9DBD4;
}

.page-about .about-track__note {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-top: 0 !important;
  font-size: 13.5px !important;
  color: var(--cyan-soft) !important;
  border-top: 1px dashed rgba(43, 230, 200, .26);
  transition: max-height .38s ease, opacity .3s ease, margin-top .3s ease, padding-top .3s ease;
}
.page-about .about-track__item:hover .about-track__note,
.page-about .about-track__item:focus-visible .about-track__note,
.page-about .about-track__item:focus-within .about-track__note {
  max-height: 6em;
  opacity: 1;
  margin-top: 12px !important;
  padding-top: 12px;
}

.page-about .about-track__item:hover .about-track__card,
.page-about .about-track__item:focus-visible .about-track__card {
  border-color: var(--cyan);
  background: var(--stand);
}

.page-about .about-track__item:hover .about-track__dot,
.page-about .about-track__item:focus-visible .about-track__dot {
  background: var(--cyan);
  box-shadow: 0 0 0 6px rgba(43, 230, 200, .16);
}

.page-about .about-track__item--next .about-track__dot {
  border-color: var(--hot);
  box-shadow: 0 0 0 4px rgba(255, 90, 43, .14);
}

.page-about .about-track__item--next .about-track__year {
  color: var(--hot);
}

.page-about .about-track__item--next .about-track__card {
  border-left-color: var(--hot);
}

.page-about .about-track__item--next:hover .about-track__dot,
.page-about .about-track__item--next:focus-visible .about-track__dot {
  background: var(--hot);
  box-shadow: 0 0 0 6px rgba(255, 90, 43, .20);
}

.page-about .about-track__item--next:hover .about-track__card,
.page-about .about-track__item--next:focus-visible .about-track__card {
  border-color: var(--hot);
}

/* ============ 数据带 ============ */

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 46px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-panel);
  overflow: hidden;
}

.page-about .about-stats__item {
  padding: 22px 18px;
  background: var(--grass);
}

.page-about .about-stats__num {
  font-size: clamp(24px, 6vw, 34px);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -0.01em;
  line-height: 1;
}

.page-about .about-stats__label {
  margin: 10px 0 0;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--mute);
}

/* ============ 团队 ============ */

.page-about .about-team {
  position: relative;
  overflow: hidden;
  background: var(--grass);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-about .about-team__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .17;
  filter: saturate(.5) contrast(1.05);
}

.page-about .about-team__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--grass) 0%, rgba(11, 42, 34, .78) 45%, var(--grass) 100%);
}

.page-about .about-team__inner {
  position: relative;
  z-index: 2;
}

.page-about .about-team__head {
  max-width: 46em;
}

.page-about .about-team__lede {
  margin-top: 16px;
  color: #C9DBD4;
  font-size: 16px;
  line-height: 1.8;
}

.page-about .about-roles__filter-wrap {
  margin-top: 34px;
}

.page-about .about-roles__filter-label {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--mute);
  margin-bottom: 12px;
}

.page-about .about-roles__filter {
  gap: 10px;
}

.page-about .about-roles__filter .chip {
  border-color: var(--line);
  background: rgba(5, 19, 15, .5);
  color: #C9DBD4;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}

.page-about .about-roles__filter .chip[aria-pressed="true"] {
  border-color: var(--cyan);
  background: var(--cyan);
  color: #04120E;
  font-weight: 600;
}

.page-about .about-roles__count {
  margin-top: 12px;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: .06em;
}

.page-about .about-roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 24px;
  padding: 0;
  list-style: none;
}

.page-about .about-roles__item {
  padding: 22px 20px;
  background: rgba(5, 19, 15, .72);
  border: 1px solid var(--line);
  border-radius: var(--r-panel);
}

.page-about .about-roles__num {
  font-size: 30px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.page-about .about-roles__num small {
  font-size: 13px;
  margin-left: 4px;
  color: var(--mute);
  letter-spacing: .1em;
}

.page-about .about-roles__item .h3 {
  margin: 14px 0 0;
  font-size: 18px;
}

.page-about .about-roles__item p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: #C0D2CB;
}

.page-about .about-roles__bar {
  height: 6px;
  margin-top: 18px;
  border-radius: 3px;
  background: var(--line);
  overflow: hidden;
}

.page-about .about-roles__bar span {
  display: block;
  height: 100%;
  border-radius: 3px;
  background: var(--cyan);
}

.page-about .about-roles__item[data-tags="editor"] .about-roles__bar span { width: 100%; }
.page-about .about-roles__item[data-tags="produce"] .about-roles__bar span { width: 56%; background: var(--cyan-soft); }
.page-about .about-roles__item[data-tags="tech"] .about-roles__bar span { width: 38%; background: var(--amber); }
.page-about .about-roles__item[data-tags="service"] .about-roles__bar span { width: 19%; background: var(--amber); }

.page-about .about-team__cta {
  margin-top: 32px;
  padding: 18px 20px;
  border: 1px dashed var(--line);
  border-radius: var(--r-card);
  font-size: 15px;
  line-height: 1.8;
  color: #C9DBD4;
}

/* ============ 栏目结构 ============ */

.page-about .about-columns {
  background: var(--night);
}

.page-about .about-columns__lede {
  margin-top: 16px;
  max-width: 46em;
  color: var(--mute);
  font-size: 16px;
  line-height: 1.8;
}

.page-about .about-columns__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-columns__item {
  position: relative;
  padding: 22px 20px 22px 22px;
  background: linear-gradient(120deg, rgba(18, 58, 46, .55), rgba(5, 19, 15, .9));
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  transition: border-color .25s ease, transform .25s ease;
}

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

.page-about .about-columns__idx {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--cyan);
}

.page-about .about-columns__item .h3 {
  margin: 10px 0 0;
  font-size: 19px;
}

.page-about .about-columns__item p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: #B9CEC6;
}

.page-about .about-columns__note {
  margin-top: 30px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mute);
}

/* ============ 合作与资质 ============ */

.page-about .about-partners {
  position: relative;
  padding-top: calc(72px + 34px);
  padding-bottom: 78px;
  background: linear-gradient(180deg, var(--stand) 0%, #061A14 58%, var(--night) 100%);
  clip-path: polygon(0 34px, 100% 0, 100% 100%, 0 100%);
}

.page-about .about-partners__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-partners__copy p {
  margin-top: 16px;
  font-size: 15.5px;
  line-height: 1.85;
  color: #C0D2CB;
}

.page-about .about-partners__copy h2 {
  margin-top: 14px;
}

.page-about .about-partners__figure {
  margin: 0;
}

.page-about .about-honors {
  margin-top: 46px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.page-about .about-honors .h3 {
  margin: 0;
  font-size: 18px;
  color: var(--score);
}

.page-about .about-honors__list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-honors__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(43, 230, 200, .04);
  font-size: 13.5px;
  color: #D6E6E0;
  outline: none;
  transition: border-color .2s ease, background .2s ease;
}

.page-about .about-honors__item::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-about .about-honors__item:hover,
.page-about .about-honors__item:focus-visible {
  border-color: var(--cyan);
  background: rgba(43, 230, 200, .10);
}

.page-about .about-honors__note {
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mute);
}

/* ============ 响应式 ============ */

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 60px);
    padding-bottom: 84px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.3fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-hero__side {
    display: block;
    position: absolute;
    right: 6px;
    top: 4px;
    writing-mode: vertical-rl;
    font-size: 12px;
    letter-spacing: .3em;
    color: rgba(43, 230, 200, .5);
  }

  .page-about .about-hero__year-num {
    font-size: clamp(120px, 13vw, 176px);
  }

  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-partners__top {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 44px;
    align-items: start;
  }

  /* 时间轴：左右交错 */
  .page-about .about-track__list::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .about-track__item {
    grid-template-columns: minmax(0, 1fr) 92px minmax(0, 1fr);
    column-gap: 0;
    row-gap: 0;
    padding-bottom: 44px;
  }

  .page-about .about-track__dot {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    margin: 20px 0 0;
  }

  .page-about .about-track__card {
    grid-row: 1;
    border-left: 1px solid var(--line);
    border-top: 2px solid var(--cyan);
  }

  .page-about .about-track__year {
    grid-row: 1;
    font-size: 26px;
    letter-spacing: .06em;
  }

  .page-about .about-track__item:nth-child(odd) .about-track__year {
    grid-column: 1;
    text-align: right;
    padding-right: 26px;
    align-self: start;
    margin-top: 12px;
  }

  .page-about .about-track__item:nth-child(odd) .about-track__card {
    grid-column: 3;
    margin-left: 26px;
  }

  .page-about .about-track__item:nth-child(even) .about-track__year {
    grid-column: 3;
    grid-row: 1;
    text-align: left;
    padding-left: 26px;
    align-self: start;
    margin-top: 12px;
  }

  .page-about .about-track__item:nth-child(even) .about-track__card {
    grid-column: 1;
    margin-right: 26px;
  }

  .page-about .about-track__item--next .about-track__card {
    border-top-color: var(--hot);
    border-left-color: var(--line);
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero__year-num {
    font-size: clamp(140px, 12vw, 196px);
  }

  .page-about .about-roles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-track__note,
  .page-about .about-track__card,
  .page-about .about-track__dot,
  .page-about .about-columns__item,
  .page-about .about-roles__filter .chip,
  .page-about .about-honors__item {
    transition: none !important;
  }

  .page-about .about-track__item:hover .about-track__note,
  .page-about .about-track__item:focus-visible .about-track__note,
  .page-about .about-track__item:focus-within .about-track__note {
    max-height: none;
    opacity: 1;
    margin-top: 12px !important;
    padding-top: 12px;
  }
}
<<<END>>>