.page-about {
  --about-axis: 92px;
  --about-axis-line: rgba(148, 163, 184, .2);
  --about-cyan-soft: rgba(34, 211, 238, .12);
  --about-violet-soft: rgba(124, 58, 237, .16);
}

/* ---------- 面包屑 ---------- */
.page-about .crumbs {
  margin-top: 28px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(40px, 7vw, 96px) 0 clamp(36px, 5vw, 72px);
  overflow: hidden;
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -18%;
  bottom: 6%;
  width: min(780px, 98vw);
  height: clamp(180px, 26vw, 340px);
  background: linear-gradient(112deg, rgba(124, 58, 237, .38), rgba(34, 211, 238, .12) 52%, transparent 80%);
  transform: rotate(-11deg);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -10%;
  top: 12%;
  width: min(420px, 70vw);
  height: 90px;
  background: linear-gradient(90deg, rgba(255, 90, 31, .18), transparent 78%);
  transform: rotate(-9deg);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero__eyebrow {
  margin: 0 0 20px;
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 7.6vw, 104px);
  line-height: 1.02;
  letter-spacing: -.035em;
  color: var(--frost);
  max-width: 18em;
}

.page-about .about-hero__mark {
  display: inline-block;
  background: linear-gradient(96deg, var(--orange), var(--gold) 46%, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero__lede {
  margin: clamp(22px, 3vw, 34px) 0 0;
  max-width: 62ch;
  color: var(--frost-2);
}

.page-about .about-hero__figures {
  list-style: none;
  margin: clamp(34px, 5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-hero__figure {
  background: linear-gradient(160deg, var(--ink-800), var(--ink-900));
  padding: 18px 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero__fig {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  color: var(--frost);
  letter-spacing: -.02em;
}

.page-about .about-hero__figure:nth-child(1) .about-hero__fig { color: var(--cyan); }
.page-about .about-hero__figure:nth-child(2) .about-hero__fig { color: var(--gold); }
.page-about .about-hero__figure:nth-child(3) .about-hero__fig { color: var(--orange); }
.page-about .about-hero__figure:nth-child(4) .about-hero__fig { color: var(--violet); }

.page-about .about-hero__figlabel {
  font-size: 14px;
  color: var(--steel);
}

/* ---------- 页内目录 ---------- */
.page-about .about-jump {
  position: relative;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, var(--about-violet-soft), transparent 60%);
}

.page-about .about-jump__list {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 26px;
}

.page-about .about-jump__list a {
  display: inline-block;
  padding: 15px 0 13px;
  font-size: 14px;
  font-family: var(--font-mono);
  letter-spacing: .04em;
  color: var(--steel);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

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

/* ---------- 通用左右分栏（年鉴刻度 + 正文） ---------- */
.page-about .about-split {
  display: grid;
  gap: 22px;
}

.page-about .about-split__axis {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
}

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

.page-about .about-axis__label {
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--steel);
}

.page-about .about-split__body > .h2 {
  margin: 0 0 20px;
}

.page-about .about-split__body p {
  margin: 0 0 18px;
  color: var(--frost-2);
}

.page-about .about-split__media {
  margin: 6px 0 0;
}

/* ---------- 品牌缘起 ---------- */
.page-about .about-origin__points {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-origin__points li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--about-axis-line);
}

.page-about .about-origin__points li:last-child {
  border-bottom: 1px solid var(--about-axis-line);
}

.page-about .about-origin__key {
  font-size: 13px;
  color: var(--orange);
  padding-top: 3px;
}

.page-about .about-origin__points p {
  margin: 0;
  color: var(--frost-2);
  font-size: 16px;
}

/* ---------- 数据团队 ---------- */
.page-about .about-team {
  position: relative;
}

.page-about .about-team::before {
  content: "";
  position: absolute;
  left: -6%;
  top: 8%;
  width: min(560px, 80vw);
  height: 140px;
  background: linear-gradient(90deg, rgba(255, 90, 31, .16), transparent 76%);
  transform: rotate(-8deg);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-team__grid {
  display: grid;
  gap: 20px;
  counter-reset: unit;
}

.page-about .about-unit {
  position: relative;
  padding: 22px 22px 24px;
  background: linear-gradient(158deg, var(--ink-800), var(--ink-900) 72%);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: transform .28s var(--ease), border-color .28s var(--ease), box-shadow .28s var(--ease);
}

.page-about .about-unit::after {
  content: "";
  position: absolute;
  top: 0;
  left: 22px;
  width: 54px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--gold));
}

.page-about .about-unit:nth-child(2)::after { background: linear-gradient(90deg, var(--cyan), var(--violet)); }
.page-about .about-unit:nth-child(3)::after { background: linear-gradient(90deg, var(--violet), var(--cyan)); }
.page-about .about-unit:nth-child(4)::after { background: linear-gradient(90deg, var(--gold), var(--orange)); }

.page-about .about-unit:hover,
.page-about .about-unit:focus-within {
  transform: translateY(-4px);
  border-color: var(--line-cyan);
  box-shadow: var(--shadow-deep);
}

.page-about .about-unit__tag {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-about .about-unit .h3 {
  margin: 0 0 10px;
}

.page-about .about-unit p {
  margin: 0;
  color: var(--frost-2);
  font-size: 15.5px;
  line-height: 1.72;
}

.page-about .about-team__media {
  margin: 32px 0 0;
}

/* ---------- 更新节奏 ---------- */
.page-about .about-cadence__list {
  margin-top: 30px;
  border-top: 1px solid var(--about-axis-line);
}

.page-about .about-cadence__row {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "key val"
    "title title";
  gap: 4px 14px;
  align-items: baseline;
  padding: 15px 4px;
  border-bottom: 1px solid var(--about-axis-line);
  transition: background-color .22s var(--ease), padding-left .22s var(--ease);
}

.page-about .about-cadence__row:hover,
.page-about .about-cadence__row:focus-within {
  background: linear-gradient(90deg, var(--about-cyan-soft), transparent 72%);
  padding-left: 12px;
}

.page-about .about-cadence__key {
  grid-area: key;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--violet);
}

.page-about .about-cadence__title {
  grid-area: title;
  color: var(--frost);
  font-size: 16px;
}

.page-about .about-cadence__val {
  grid-area: val;
  font-size: 14px;
  color: var(--cyan);
  white-space: nowrap;
}

/* ---------- 赛季历程 ---------- */
.page-about .about-stages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
  counter-reset: stage;
}

.page-about .about-stage {
  position: relative;
  padding: 18px 18px 20px;
  background: linear-gradient(160deg, rgba(21, 23, 29, .96), rgba(11, 12, 16, .96));
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color .26s var(--ease), transform .26s var(--ease), background-color .26s var(--ease);
}

.page-about .about-stage:hover,
.page-about .about-stage:focus-visible {
  border-color: var(--line-violet);
  transform: translateY(-3px);
  outline: none;
}

.page-about .about-stage:focus-visible {
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-about .about-stage__year {
  display: block;
  height: 22px;
  line-height: 22px;
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-about .about-stage__dot {
  display: block;
  width: 14px;
  height: 14px;
  margin: 12px 0 16px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
  transition: background-color .26s var(--ease), box-shadow .26s var(--ease);
}

.page-about .about-stage:hover .about-stage__dot,
.page-about .about-stage:focus-visible .about-stage__dot {
  background: var(--cyan);
  box-shadow: 0 0 0 6px var(--about-cyan-soft);
}

.page-about .about-stage__title {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--frost);
}

.page-about .about-stage__detail {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--frost-2);
}

.page-about .about-milestones__media {
  margin: 34px 0 0;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partner {
  position: relative;
}

.page-about .about-partner::before {
  content: "";
  position: absolute;
  right: -8%;
  top: 4%;
  width: min(620px, 88vw);
  height: 150px;
  background: linear-gradient(200deg, var(--about-violet-soft), transparent 74%);
  transform: rotate(-7deg);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-partner__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 价值总结 ---------- */
.page-about .about-claim__inner {
  position: relative;
}

.page-about .about-claim__eyebrow {
  margin: 0 0 16px;
  color: var(--orange);
}

.page-about .about-claim__title {
  margin: 0 0 8px;
}

.page-about .about-claim__list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-claim__list li {
  padding: 20px 0 4px;
  border-top: 1px solid var(--about-axis-line);
}

.page-about .about-claim__list li:last-child {
  border-bottom: 1px solid var(--about-axis-line);
  padding-bottom: 20px;
}

.page-about .about-claim__list .h3 {
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--frost);
}

.page-about .about-claim__list .h3::before {
  content: "";
  flex: none;
  width: 22px;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}

.page-about .about-claim__list p {
  margin: 0;
  color: var(--frost-2);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-claim__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* ---------- 图片基础 ---------- */
.page-about .media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--r-md);
}

.page-about .about-hero,
.page-about .about-team,
.page-about .about-partner {
  position: relative;
  z-index: 0;
}

/* ---------- 平板及桌面 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .about-unit:nth-child(2) {
    margin-top: 30px;
  }

  .page-about .about-unit:nth-child(4) {
    margin-top: 30px;
  }

  .page-about .about-cadence__row {
    grid-template-columns: 120px minmax(0, 1fr) auto;
    grid-template-areas: "key title val";
    align-items: center;
    gap: 20px;
    padding: 18px 4px;
  }

  .page-about .about-claim__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 40px;
  }

  .page-about .about-claim__list li:last-child {
    border-bottom: 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-jump__list {
    gap: 6px 38px;
  }

  .page-about .about-split {
    grid-template-columns: var(--about-axis) minmax(0, 1fr);
    column-gap: clamp(28px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-split__axis {
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
    gap: 8px;
    padding-left: 0;
    padding-right: 18px;
    border-left: 0;
    border-right: 1px solid var(--about-axis-line);
    position: sticky;
    top: calc(var(--nav-h) + 28px);
  }

  .page-about .about-split__body {
    max-width: 68ch;
  }

  .page-about .about-split__media {
    grid-column: 2;
    max-width: 68ch;
  }

  .page-about .about-origin__points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid var(--about-axis-line);
    border-bottom: 1px solid var(--about-axis-line);
  }

  .page-about .about-origin__points li {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 20px 22px 22px 0;
    border-top: 0;
    border-right: 1px solid var(--about-axis-line);
  }

  .page-about .about-origin__points li:last-child {
    border-bottom: 0;
    border-right: 0;
  }

  /* 时序轨道 */
  .page-about .about-stages {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0;
    position: relative;
    margin-top: 10px;
  }

  .page-about .about-stages::before {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    top: 63px;
    height: 1px;
    background: linear-gradient(90deg, var(--line), var(--line-cyan) 55%, var(--line-violet));
    z-index: -1;
  }

  .page-about .about-stage {
    background: transparent;
    border: 0;
    border-radius: 0;
    padding: 0 16px 0 0;
    transform: none;
  }

  .page-about .about-stage:hover,
  .page-about .about-stage:focus-visible {
    transform: translateY(-4px);
    border-color: transparent;
  }

  .page-about .about-stage:focus-visible {
    box-shadow: 0 0 0 2px var(--cyan);
    border-radius: var(--r-sm);
  }

  .page-about .about-stage__detail {
    opacity: .82;
    transition: opacity .26s var(--ease), color .26s var(--ease);
  }

  .page-about .about-stage:hover .about-stage__detail,
  .page-about .about-stage:focus-visible .about-stage__detail {
    opacity: 1;
    color: var(--frost);
  }

  .page-about .about-milestones__media {
    margin-top: 44px;
  }
}

@media (min-width: 1120px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-unit:nth-child(2) { margin-top: 42px; }
  .page-about .about-unit:nth-child(3) { margin-top: 14px; }
  .page-about .about-unit:nth-child(4) { margin-top: 56px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-unit,
  .page-about .about-stage,
  .page-about .about-stage__dot,
  .page-about .about-stage__detail,
  .page-about .about-cadence__row {
    transition: none;
  }

  .page-about .about-unit:hover,
  .page-about .about-stage:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>