.page-about {
  --tl-rail: 2px;
  --tl-gap: 34px;
  --arch-tint: rgba(25, 227, 209, .07);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding-top: clamp(18px, 4vw, 34px);
  font-size: 13px;
}
.page-about .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
}
.page-about .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}
.page-about .breadcrumbs__link {
  color: var(--cyan);
  text-decoration: none;
}
.page-about .breadcrumbs__link:hover {
  text-decoration: underline;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero__frame {
  position: relative;
  overflow: hidden;
}
.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 220px;
  height: 220px;
  border-radius: 42% 58% 63% 37% / 47% 41% 59% 53%;
  background: radial-gradient(circle at 40% 40%, rgba(255, 107, 44, .34), transparent 68%);
  pointer-events: none;
}
.page-about .about-hero__lede {
  max-width: 62ch;
  font-size: clamp(16px, 2.1vw, 18.5px);
  line-height: 1.78;
  color: var(--paper);
}
.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.page-about .about-hero__stats .stat__value {
  display: block;
  font-size: clamp(22px, 4vw, 34px);
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}
.page-about .about-hero__stats .stat__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}
.page-about .about-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 28px;
}
.page-about .about-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-about .about-index__link .mono {
  color: var(--cyan);
  font-size: 11px;
}
.page-about .about-index__link:hover {
  color: var(--paper);
  border-color: var(--cyan);
}

/* ---------- 通用章节 ---------- */
.page-about .about-sec__grid {
  display: grid;
  gap: 22px;
}
.page-about .about-sec__num {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--cyan);
}
.page-about h2 {
  margin: 0;
  font-size: clamp(24px, 3.6vw, 42px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-about .about-sec__lead {
  max-width: 66ch;
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.75;
}
.page-about .about-sec__body p {
  margin: 0 0 16px;
  color: var(--paper);
  line-height: 1.78;
}
.page-about .about-sec__body p:last-child {
  margin-bottom: 0;
}
.page-about .about-sec__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(25, 227, 209, .45);
}
.page-about .about-sec__body a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 时间线 ---------- */
.page-about .about-tl-wrap {
  position: relative;
  padding: clamp(22px, 4vw, 40px) clamp(16px, 3vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, var(--ink-800), var(--ink-900));
  overflow: hidden;
}
.page-about .about-tl-bg {
  position: absolute;
  inset: 0;
  opacity: .26;
  z-index: 0;
  pointer-events: none;
}
.page-about .about-tl-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: screen;
}
.page-about .about-tl-wrap > * {
  position: relative;
  z-index: 1;
}
.page-about .about-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 24px 0 28px;
}
.page-about .filter-chip {
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}
.page-about .filter-chip:hover {
  color: var(--paper);
  border-color: var(--cyan);
}
.page-about .filter-chip[aria-pressed="true"] {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}
.page-about .about-filter__count {
  margin-left: auto;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .06em;
}

.page-about .tl {
  position: relative;
  margin: 0;
  padding: 0 0 0 var(--tl-gap);
  list-style: none;
}
.page-about .tl::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 6px;
  bottom: 6px;
  width: var(--tl-rail);
  background: repeating-linear-gradient(180deg, var(--cyan) 0 12px, rgba(31, 43, 69, .9) 12px 22px);
  opacity: .7;
}
.page-about .tl__item {
  position: relative;
  margin-bottom: 20px;
  padding: 18px 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(11, 24, 48, .82);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
}
.page-about .tl__item:last-child {
  margin-bottom: 0;
}
.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--tl-gap) + 5px);
  top: 24px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
  box-shadow: var(--glow-cyan);
}
.page-about .tl__item[data-filter-tags="2023"] {
  border-left-color: var(--orange);
}
.page-about .tl__item[data-filter-tags="2023"]::before {
  border-color: var(--orange);
  box-shadow: 0 0 12px rgba(255, 107, 44, .55);
}
.page-about .tl__item[data-filter-tags="2025"] {
  border-left-color: var(--gold);
}
.page-about .tl__item[data-filter-tags="2025"]::before {
  border-color: var(--gold);
  box-shadow: 0 0 12px rgba(255, 211, 107, .5);
}
.page-about .tl__year {
  display: block;
  font-size: clamp(20px, 3vw, 28px);
  letter-spacing: .06em;
  color: var(--cyan);
}
.page-about .tl__title {
  margin: 6px 0 10px;
  font-size: clamp(17px, 2.3vw, 21px);
  color: var(--paper);
}
.page-about .tl__text {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}
.page-about .about-tl__foot {
  margin: 26px 0 0;
  font-size: 14px;
  color: var(--muted);
}
.page-about .about-tl__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(25, 227, 209, .45);
}

/* ---------- 团队 ---------- */
.page-about .about-team__figure {
  margin: 0 0 clamp(28px, 5vw, 46px);
}
.page-about .about-team__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}
.page-about .about-team__item {
  padding: 20px 20px 22px;
}
.page-about .about-team__item--local {
  background: linear-gradient(150deg, rgba(14, 42, 42, .95), rgba(11, 24, 48, .95));
  border-color: rgba(25, 227, 209, .35);
}
.page-about .about-team__name {
  margin: 0 0 8px;
  font-size: 16.5px;
  color: var(--paper);
}
.page-about .about-team__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 核录流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: 18px;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: flow;
}
.page-about .about-flow__step {
  position: relative;
  padding: 22px 20px;
  border-radius: var(--radius-md);
  background: var(--ink-800);
  border: 1px solid var(--line);
}
.page-about .about-flow__step::after {
  content: "";
  position: absolute;
  inset: auto 20px 0 20px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  opacity: .55;
}
.page-about .about-flow__mark {
  display: block;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--orange);
}
.page-about .about-flow__name {
  margin: 8px 0 10px;
  font-size: clamp(17px, 2.2vw, 20px);
  color: var(--paper);
}
.page-about .about-flow__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 归档分区 ---------- */
.page-about .about-archive {
  margin-top: clamp(30px, 5vw, 54px);
  padding: clamp(46px, 8vw, 92px) 0;
  background: linear-gradient(170deg, var(--ink-700), #071a1a 78%);
  clip-path: polygon(0 26px, 100% 0, 100% calc(100% - 22px), 0 100%);
}
.page-about .about-archive__grid {
  align-items: center;
  gap: 26px;
  margin-top: clamp(26px, 4vw, 40px);
}
.page-about .about-archive__tree {
  padding: 18px;
  border: 1px solid rgba(25, 227, 209, .28);
  border-radius: var(--radius-lg);
  background: rgba(5, 11, 28, .55);
  overflow: hidden;
}
.page-about .about-tree__svg {
  display: block;
  width: 100%;
  height: auto;
}
.page-about .about-tree__lines path {
  fill: none;
  stroke: rgba(25, 227, 209, .5);
  stroke-width: 1.4;
}
.page-about .about-tree__nodes rect {
  fill: rgba(25, 227, 209, .08);
  stroke: rgba(25, 227, 209, .55);
  stroke-width: 1;
}
.page-about .about-tree__nodes text {
  fill: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  text-anchor: middle;
}
.page-about .about-archive__figure {
  margin: 0;
}

.page-about .about-arch {
  margin-top: clamp(26px, 4vw, 40px);
  border-top: 1px solid rgba(25, 227, 209, .22);
}
.page-about .about-arch__group {
  border-bottom: 1px solid rgba(25, 227, 209, .18);
}
.page-about .about-arch__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
}
.page-about .about-arch__summary::-webkit-details-marker {
  display: none;
}
.page-about .about-arch__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
}
.page-about .about-arch__group[open] .about-arch__summary::after {
  content: "–";
}
.page-about .about-arch__season {
  font-size: clamp(16px, 2.2vw, 20px);
  color: var(--paper);
  letter-spacing: .06em;
}
.page-about .about-arch__hint {
  color: var(--muted);
}
.page-about .about-arch__list {
  margin: 0 0 18px;
  padding: 0 0 0 18px;
  list-style: none;
  border-left: 1px solid rgba(25, 227, 209, .3);
}
.page-about .about-arch__list li {
  padding: 7px 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 资料回溯 ---------- */
.page-about .about-reach__inner {
  max-width: 760px;
}
.page-about .about-steps {
  display: grid;
  gap: 14px;
  margin: clamp(24px, 4vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}
.page-about .about-step {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(58, 16, 48, .5);
  border: 1px solid rgba(255, 211, 107, .22);
}
.page-about .about-step__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 14px;
}
.page-about .about-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper);
}
.page-about .about-reach__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-sec__grid {
    grid-template-columns: minmax(220px, 0.85fr) minmax(0, 1.6fr);
    gap: 38px;
  }
  .page-about .about-team__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-about .tl {
    padding-left: 52px;
  }
  .page-about .tl__item:nth-child(3n + 1) {
    max-width: 66%;
  }
  .page-about .tl__item:nth-child(3n + 2) {
    max-width: 84%;
    margin-left: 8%;
  }
  .page-about .tl__item:nth-child(3n) {
    max-width: 74%;
    margin-left: 16%;
  }
  .page-about .about-team__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-team__item--local {
    grid-column: span 3;
  }
  .page-about .about-archive__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .filter-chip,
  .page-about .about-index__link {
    transition: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</｜｜DSML｜｜ calls>