.page-about {
  --about-rail: 212px;
  --about-pad: clamp(22px, 3.6vw, 48px);
  --orange-deep: #B34E12;
  --about-ink: #101B2E;
  --about-paper-text: #3C4A63;
  position: relative;
  background: var(--ink);
  color: var(--ink-soft);
  overflow-x: clip;
}

.page-about p {
  margin: 0 0 1.1em;
  line-height: 1.82;
}

.page-about p:last-child {
  margin-bottom: 0;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0 0 .55em;
  line-height: 1.18;
  letter-spacing: -.01em;
}

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

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(64px, 10vw, 122px) 0 clamp(38px, 6vw, 70px);
  border-radius: 0 0 var(--radius-l) var(--radius-l);
}

.page-about .about-hero__img {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  opacity: .42;
  filter: saturate(.82) contrast(1.06);
}

.page-about .about-hero__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(11, 18, 32, .5) 0%, rgba(11, 18, 32, .8) 46%, var(--ink) 100%),
    radial-gradient(120% 90% at 16% 6%, rgba(22, 217, 140, .3), transparent 62%),
    radial-gradient(90% 70% at 90% 22%, rgba(255, 122, 41, .22), transparent 68%);
}

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

.page-about .crumbs {
  margin-bottom: clamp(18px, 3vw, 28px);
}

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

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 6.1vw, 62px);
  line-height: 1.08;
  color: #fff;
  max-width: 17em;
  transform: skewX(-2deg);
  transform-origin: left center;
  text-wrap: balance;
}

.page-about .about-hero__lead {
  margin-top: clamp(16px, 2.4vw, 26px);
  max-width: 46em;
  font-size: clamp(15px, 1.3vw, 17.5px);
  line-height: 1.88;
  color: var(--ink-soft);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 14px 16px;
  border-radius: var(--radius-m);
  background: rgba(20, 33, 58, .68);
  border: 1px solid var(--line);
}

.page-about .about-hero__facts strong {
  font-weight: 700;
  font-size: clamp(21px, 3vw, 30px);
  color: var(--green);
  line-height: 1.1;
}

.page-about .about-hero__facts span {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--slate);
}

/* ---------- 卷轴骨架 ---------- */

.page-about .about-scroll {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  padding-top: clamp(30px, 5vw, 58px);
  padding-bottom: clamp(34px, 5vw, 64px);
}

.page-about .about-rail {
  position: sticky;
  top: 0;
  z-index: 6;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 0;
  background: linear-gradient(180deg, var(--ink) 72%, rgba(11, 18, 32, 0));
  scrollbar-width: none;
}

.page-about .about-rail::-webkit-scrollbar {
  display: none;
}

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

.page-about .anchor-nav__link {
  flex: 0 0 auto;
  display: block;
  padding: 7px 14px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  color: var(--slate);
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}

.page-about .anchor-nav__link:hover,
.page-about .anchor-nav__link:focus-visible {
  color: var(--ink);
  background: var(--green);
  border-color: var(--green);
}

.page-about .anchor-nav__link[aria-current="true"] {
  color: var(--ink);
  background: var(--green);
  border-color: var(--green);
}

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

/* ---------- 区块 ---------- */

.page-about .about-block {
  padding: var(--about-pad);
  margin-bottom: clamp(22px, 3.4vw, 40px);
  border-radius: var(--radius-l);
  background: var(--ink-2);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-1);
}

.page-about .about-block:last-child {
  margin-bottom: 0;
}

.page-about .about-block--flat {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  padding-inline: 0;
}

.page-about .about-block--map {
  background-color: var(--ink-2);
  background-image:
    radial-gradient(95% 80% at 88% 0%, rgba(22, 217, 140, .22), transparent 60%),
    radial-gradient(80% 70% at 6% 100%, rgba(255, 122, 41, .16), transparent 62%);
}

.page-about .about-block--paper {
  background: var(--paper);
  color: var(--about-paper-text);
  border-color: transparent;
  box-shadow: var(--shadow-2);
}

.page-about .about-block--paper .kicker {
  color: var(--orange-deep);
}

.page-about .about-block--paper .about-h2 {
  color: var(--about-ink);
}

.page-about .about-block--paper .about-lead {
  color: var(--about-paper-text);
}

.page-about .about-block--partners {
  border-color: rgba(255, 122, 41, .32);
}

.page-about .about-block--method {
  border-color: rgba(22, 217, 140, .26);
}

.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 37px);
  color: #fff;
  transform: skewX(-1.6deg);
  transform-origin: left center;
}

.page-about .about-lead {
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.86;
  color: var(--ink-soft);
}

.page-about .section-head {
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-about .section-head__desc {
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
  margin: 0;
}

/* ---------- 起点与主线 ---------- */

.page-about .about-split {
  display: grid;
  gap: 20px;
  margin-top: clamp(16px, 2.4vw, 26px);
}

.page-about .about-split__main p {
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--ink-soft);
}

.page-about .about-split__aside {
  padding: 20px 22px;
  border-radius: var(--radius-m);
  background: rgba(11, 18, 32, .55);
  border: 1px solid rgba(22, 217, 140, .3);
}

.page-about .about-aside__title {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--green);
  margin: 0 0 13px;
}

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

.page-about .about-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--green);
  transform: skewX(-14deg);
}

.page-about .about-list--partners li {
  font-size: 15px;
}

.page-about .about-list--partners strong {
  color: #fff;
  font-weight: 700;
}

/* ---------- 赛季时间轴 ---------- */

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 28px;
  position: relative;
  display: grid;
  gap: 22px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--green), var(--orange) 58%, rgba(217, 166, 75, .75));
  opacity: .6;
}

.page-about .timeline__item {
  position: relative;
}

.page-about .timeline__dot {
  position: absolute;
  left: -28px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ink);
  border: 3px solid var(--green);
  box-sizing: border-box;
}

.page-about .about-node__stamp {
  margin: 0 0 8px;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--slate);
}

.page-about .about-step {
  border-radius: var(--radius-m);
  background: rgba(20, 33, 58, .62);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-about .about-step[open] {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-1);
}

.page-about .step__summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  color: #fff;
  transition: background .2s var(--ease);
}

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

.page-about .about-step[open] > .step__summary {
  background: rgba(22, 217, 140, .1);
}

.page-about .step__num {
  flex: 0 0 auto;
  font-size: 12.5px;
  color: var(--orange);
}

.page-about .about-node__title {
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
}

.page-about .step__body {
  padding: 14px 18px 18px;
}

.page-about .step__body p {
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--ink-soft);
}

.page-about .about-node__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 0;
}

.page-about .about-node--media {
  padding-left: 0;
}

/* ---------- 图片 ---------- */

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

.page-about .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.88) contrast(1.05);
}

.page-about .media__caption {
  padding: 10px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--slate);
  background: rgba(11, 18, 32, .68);
}

.page-about .about-split__aside--media {
  padding: 0;
  background: transparent;
  border: 0;
}

/* ---------- 内容版图 ---------- */

.page-about .about-map__figure {
  margin: clamp(20px, 3vw, 32px) 0;
  padding: 8px;
  border-radius: var(--radius-m);
  background: rgba(11, 18, 32, .55);
  border: 1px solid var(--line);
}

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

.page-about .about-map__lines line {
  stroke: rgba(130, 150, 180, .16);
  stroke-width: 1;
}

.page-about .about-map__arc {
  fill: none;
  stroke: rgba(22, 217, 140, .55);
  stroke-width: 2;
  stroke-dasharray: 6 7;
}

.page-about .about-map__arc--dim {
  stroke: rgba(255, 122, 41, .42);
}

.page-about .about-map__pin {
  fill: var(--ink);
  stroke: var(--green);
  stroke-width: 3;
}

.page-about .about-map__pin--hub {
  fill: var(--green);
  stroke: rgba(22, 217, 140, .32);
  stroke-width: 9;
}

.page-about .about-map__pin--accent {
  stroke: var(--orange);
}

.page-about .about-map__labels text {
  fill: var(--slate);
  font-family: var(--font-body);
  font-size: 14px;
  text-anchor: middle;
}

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

.page-about .about-map__card {
  padding: 18px;
  border-radius: var(--radius-m);
  background: rgba(11, 18, 32, .55);
  border: 1px solid var(--line);
  transition: transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}

.page-about .about-map__card:hover,
.page-about .about-map__card:focus-within {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: rgba(20, 33, 58, .92);
}

.page-about .about-map__card-title {
  font-size: 16.5px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 8px;
}

.page-about .about-map__card-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin: 0;
}

.page-about .about-map__card-note {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate);
  transition: color .3s var(--ease);
}

.page-about .about-map__card:hover .about-map__card-note,
.page-about .about-map__card:focus-within .about-map__card-note {
  color: var(--mint);
}

.page-about .about-map__foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding-top: clamp(16px, 2.4vw, 22px);
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-team__item {
  padding: 20px 18px;
  border-radius: var(--radius-m);
  background: #fff;
  border: 1px solid rgba(38, 52, 76, .12);
  box-shadow: 0 16px 32px -28px rgba(11, 18, 32, .6);
}

.page-about .about-team__item::after {
  content: "";
  display: block;
  margin-top: 14px;
  width: 34px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--orange), var(--green));
}

.page-about .about-team__num {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange-deep);
}

.page-about .about-team__item h3 {
  margin: .45em 0 .5em;
  font-size: 17px;
  color: var(--about-ink);
}

.page-about .about-team__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-paper-text);
}

/* ---------- 合作与里程碑 ---------- */

.page-about .about-milestones {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 16px 18px;
  display: grid;
  gap: 14px;
  border-radius: var(--radius-m);
  border: 1px solid rgba(217, 166, 75, .42);
  background: linear-gradient(120deg, rgba(217, 166, 75, .16), rgba(11, 18, 32, .25));
}

.page-about .about-milestones li {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-about .about-milestones strong {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.15;
}

.page-about .about-milestones span {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--slate);
}

.page-about .about-note {
  margin: clamp(18px, 2.6vw, 24px) 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--orange);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 方法沉淀 ---------- */

.page-about .about-method {
  display: grid;
  gap: 22px;
  margin-top: clamp(16px, 2.4vw, 24px);
}

.page-about .about-method__text p {
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--ink-soft);
}

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

.page-about .stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-m);
  background: rgba(11, 18, 32, .6);
  border: 1px solid var(--line);
}

.page-about .stat__num {
  flex: 0 0 auto;
  font-size: clamp(21px, 2.6vw, 29px);
  font-weight: 700;
  color: var(--green);
  line-height: 1.1;
}

.page-about .stat__label {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--slate);
}

.page-about .about-next {
  margin-top: clamp(24px, 3.4vw, 38px);
  padding-top: clamp(18px, 2.8vw, 26px);
  border-top: 1px solid var(--line);
}

.page-about .about-next__title {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-about .about-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-next__item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-s);
  background: rgba(11, 18, 32, .45);
  border: 1px solid transparent;
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.page-about .about-next__item:hover,
.page-about .about-next__item:focus-within {
  transform: translateX(4px);
  border-color: var(--line-strong);
}

.page-about .about-next__no {
  flex: 0 0 auto;
  font-size: 12.5px;
  color: var(--orange);
}

.page-about .about-next__link {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(22, 217, 140, .3);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

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

/* ---------- 平板 ---------- */

@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 760px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: clamp(22px, 3vw, 42px);
    align-items: start;
  }

  .page-about .about-split--reverse {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }

  .page-about .about-split__aside--media {
    align-self: stretch;
  }

  .page-about .about-method {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: clamp(24px, 3vw, 40px);
    align-items: start;
  }
}

/* ---------- 桌面：左侧档案目录 + 右侧抽页 ---------- */

@media (min-width: 1000px) {
  .page-about .about-scroll {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(30px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-rail {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    top: 104px;
    padding: 22px 16px;
    border-radius: var(--radius-m);
    background: rgba(20, 33, 58, .5);
    border: 1px solid var(--line);
  }

  .page-about .about-rail__label {
    display: block;
    margin: 0 0 12px 12px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: .18em;
    color: var(--orange);
  }

  .page-about .anchor-nav__link {
    border-color: transparent;
    background: transparent;
    padding: 9px 12px;
    border-radius: var(--radius-s);
    font-size: 13.5px;
    text-align: left;
  }

  .page-about .anchor-nav__link:hover,
  .page-about .anchor-nav__link:focus-visible {
    color: var(--green);
    background: rgba(22, 217, 140, .12);
    border-color: transparent;
  }

  .page-about .anchor-nav__link[aria-current="true"] {
    color: var(--green);
    background: rgba(22, 217, 140, .14);
    border-color: transparent;
    box-shadow: inset 3px 0 0 var(--green);
  }

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

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

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

@media (min-width: 1200px) {
  .page-about .about-block {
    padding: clamp(34px, 3.2vw, 54px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-map__card,
  .page-about .about-next__item,
  .page-about .about-step,
  .page-about .anchor-nav__link {
    transition: none;
  }

  .page-about .about-map__card:hover,
  .page-about .about-next__item:hover {
    transform: none;
  }
}
<<<END>>>