.page-about {
  --about-gap: clamp(56px, 8vw, 112px);
  --about-radius-sm: 10px;
  background: var(--ink);
  color: var(--mist);
}

.page-about .breadcrumb {
  padding-top: 22px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--slate);
}

.page-about .section {
  padding: var(--about-gap) 0;
  position: relative;
}

.page-about .section__head {
  margin-bottom: clamp(26px, 4vw, 44px);
  max-width: 62ch;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 4vw, 46px) 0 var(--about-gap);
  background:
    radial-gradient(110% 80% at 88% 0%, rgba(53, 224, 208, .14), transparent 62%),
    radial-gradient(90% 70% at -10% 40%, rgba(18, 141, 138, .12), transparent 70%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 34px;
  align-items: start;
}

.page-about .about-hero__lead .kicker {
  color: var(--gold);
}

.page-about .about-hero__lead .display {
  margin: 16px 0 0;
  font-size: clamp(38px, 7vw, 76px);
  line-height: 1.04;
  letter-spacing: -.03em;
  color: var(--mist);
}

.page-about .about-hero__lead .display strong {
  display: inline-block;
  font-weight: 700;
  color: var(--cyan);
}

.page-about .about-hero__lead .lede {
  margin: 22px 0 0;
  max-width: 46ch;
  color: var(--slate);
  font-size: 16px;
  line-height: 1.8;
}

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

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

.page-about .about-hero__frame {
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-glass);
  overflow: hidden;
}

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

.page-about .year-index {
  list-style: none;
  margin: 0;
  padding: 14px 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 16px;
  background: var(--glass);
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.page-about .year-index__item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.page-about .year-index__item:last-child,
.page-about .year-index__item:nth-last-child(2) {
  border-bottom: 0;
}

.page-about .year-index__year {
  font-size: 20px;
  letter-spacing: -.01em;
  color: var(--mist);
}

.page-about .year-index__tag {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--cyan);
}

/* ---------- 时间线 ---------- */
.page-about .about-route {
  background: var(--ink-2);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-route__layout {
  display: grid;
  gap: 36px;
}

.page-about .chip-row {
  margin-bottom: 30px;
}

.page-about .filter-status {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--slate);
}

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

.page-about .route::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(53, 224, 208, .28) 55%, transparent 100%);
}

.page-about .route__item {
  position: relative;
  padding-bottom: 34px;
}

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

.page-about .route__node {
  position: absolute;
  left: -26px;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--ink-2);
  border: 1px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 224, 208, .08);
}

.page-about .route__year {
  margin: 0 0 6px;
  font-size: 18px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-about .route__title {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 600;
  color: var(--mist);
  line-height: 1.4;
}

.page-about .route__body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .route__body .route__note {
  margin: 12px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--gold-deep);
  font-size: 13px;
  line-height: 1.75;
  color: var(--gold);
  opacity: .92;
}

.page-about .about-route__aside .label {
  color: var(--slate);
}

.page-about .about-route__figure {
  margin: 12px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-flat);
  overflow: hidden;
  background: var(--ink-3);
}

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

.page-about .about-route__caption {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 团队 ---------- */
.page-about .about-team__head {
  max-width: 58ch;
}

.page-about .team-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .team-col {
  background: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: var(--r-flat);
  overflow: hidden;
  transition: border-color .2s var(--ease);
}

.page-about .team-col[open] {
  border-color: var(--line-cyan);
}

.page-about .team-col__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 4px 10px;
  padding: 18px 18px 10px;
  cursor: pointer;
  list-style: none;
  position: relative;
}

.page-about .team-col__summary::-webkit-details-marker {
  display: none;
}

.page-about .team-col__summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  bottom: 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan-deep);
}

.page-about .team-col[open] .team-col__summary::after {
  content: "−";
  color: var(--cyan);
}

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

.page-about .team-col__name {
  font-size: 19px;
  font-weight: 600;
  color: var(--mist);
}

.page-about .team-col__count {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-about .team-col__list {
  list-style: none;
  margin: 0;
  padding: 4px 18px 20px;
  display: grid;
  gap: 9px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-about .team-col__list li {
  padding-left: 14px;
  position: relative;
}

.page-about .team-col__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 1px;
  background: var(--cyan-deep);
}

.page-about .about-team__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-glass);
  overflow: hidden;
}

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

/* ---------- 协作网络 ---------- */
.page-about .about-collab__panel {
  padding: clamp(24px, 4vw, 46px);
}

.page-about .about-collab__head {
  display: grid;
  gap: 8px;
  margin-bottom: 6px;
}

.page-about .about-collab__head .section-title {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.28;
  color: var(--mist);
}

.page-about .about-collab__head .label {
  color: var(--gold);
}

.page-about .collab-board {
  display: grid;
  gap: 26px;
  margin-top: 22px;
}

.page-about .collab-nodes {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 10px;
  align-content: start;
}

.page-about .collab-dot {
  position: relative;
  display: block;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: rgba(53, 224, 208, .2);
  border: 1px solid var(--line-cyan);
  transition: background .18s var(--ease), transform .18s var(--ease), border-color .18s var(--ease);
}

.page-about .collab-dot::after {
  content: attr(data-dir);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 11px;
  letter-spacing: .12em;
  padding: 4px 8px;
  border-radius: var(--r-flat);
  background: var(--ink);
  border: 1px solid var(--line-cyan);
  color: var(--cyan);
  opacity: 0;
  pointer-events: none;
  transition: opacity .16s var(--ease);
  z-index: 3;
}

.page-about .collab-dot:hover,
.page-about .collab-dot:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .collab-dot:hover::after {
  opacity: 1;
}

.page-about .collab-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .collab-legend__item {
  display: grid;
  gap: 2px;
  padding: 12px 14px;
  border-left: 2px solid var(--cyan-deep);
  background: rgba(10, 24, 36, .5);
}

.page-about .collab-legend__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--mist);
}

.page-about .collab-legend__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
}

.page-about .about-collab__note {
  margin: 26px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-about .about-collab__link {
  margin: 16px 0 0;
  font-size: 14px;
}

.page-about .about-collab__link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
  padding-bottom: 2px;
}

.page-about .about-collab__link a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold-deep);
}

/* ---------- 四季节奏 ---------- */
.page-about .about-season__panel {
  padding: clamp(24px, 4vw, 48px);
  color: #16232B;
}

.page-about .about-season__head .kicker {
  color: var(--sand);
}

.page-about .about-season__head .section-title {
  color: #14212A;
  font-size: clamp(25px, 3.6vw, 36px);
  line-height: 1.3;
}

.page-about .about-season__head .lede {
  color: #4C5B63;
  font-size: 15px;
  line-height: 1.85;
  max-width: 64ch;
}

.page-about .season-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  border-top: 1px solid rgba(138, 111, 77, .38);
}

.page-about .season-item {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(138, 111, 77, .38);
}

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

.page-about .season-item__title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  color: #14212A;
}

.page-about .season-item__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #3D4C55;
}

.page-about .season-item__meta {
  margin: 2px 0 0;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--sand);
}

/* ---------- 海口运营 ---------- */
.page-about .about-home__panel {
  position: relative;
  display: grid;
  gap: 30px;
  padding: clamp(24px, 4vw, 52px);
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-glass);
  overflow: hidden;
  background-color: var(--ink-2);
  background-image:
    repeating-radial-gradient(circle at 92% 118%, rgba(53, 224, 208, 0) 0 26px, rgba(53, 224, 208, .07) 26px 27px),
    repeating-radial-gradient(circle at 6% -12%, rgba(242, 193, 78, 0) 0 34px, rgba(242, 193, 78, .06) 34px 35px),
    linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 100%);
}

.page-about .about-home__text .kicker {
  color: var(--cyan);
}

.page-about .about-home__text .section-title {
  margin: 10px 0 18px;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.3;
  color: var(--mist);
  max-width: 24ch;
}

.page-about .about-home__text p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
  max-width: 60ch;
}

.page-about .about-home__aside {
  padding: 20px;
  background: rgba(5, 12, 20, .55);
  border: 1px solid var(--line);
  border-radius: var(--r-glass);
}

.page-about .about-home__aside .label {
  color: var(--gold);
}

.page-about .about-home__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-home__list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 9px;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 13px;
}

.page-about .about-home__k {
  color: var(--mist);
}

.page-about .about-home__v {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
  white-space: nowrap;
}

.page-about .about-home__contact {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
  word-break: break-all;
}

.page-about .about-home__contact .mono {
  color: var(--gold);
}

.page-about .about-home__links {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-home__links a {
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  display: inline-block;
}

.page-about .about-home__links a:hover {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

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

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

  .page-about .year-index__item:nth-last-child(2) {
    border-bottom: 1px dashed var(--line-soft);
  }

  .page-about .collab-nodes {
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 12px;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .about-route__layout {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: clamp(28px, 4vw, 52px);
    align-items: start;
  }

  .page-about .about-route__aside {
    position: sticky;
    top: 104px;
  }

  .page-about .route__item {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr);
    column-gap: 22px;
    padding-bottom: 38px;
  }

  .page-about .route__year {
    margin: 0;
    font-size: 24px;
    text-align: right;
    padding-top: 2px;
  }

  .page-about .route__body {
    min-width: 0;
  }

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

  .page-about .collab-board {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    gap: clamp(24px, 3vw, 44px);
    align-items: start;
  }

  .page-about .collab-nodes {
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .collab-legend {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .season-item {
    grid-template-columns: 64px 190px minmax(0, 1fr);
    column-gap: 24px;
    align-items: start;
    padding: 22px 0;
  }

  .page-about .season-item__no {
    padding-top: 4px;
  }

  .page-about .season-item__title {
    padding-top: 1px;
  }

  .page-about .season-item__meta {
    grid-column: 3;
    margin-top: 8px;
  }

  .page-about .about-home__panel {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(30px, 4vw, 56px);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-about .year-index {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    padding: 16px 20px;
  }

  .page-about .year-index__item {
    border-bottom: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-about .year-index__year {
    font-size: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-col,
  .page-about .collab-dot,
  .page-about .collab-dot::after {
    transition-duration: .12s;
  }

  .page-about .collab-dot:hover,
  .page-about .collab-dot:focus-visible {
    transform: none;
  }
}
<<<END>>>