.page-about {
  --about-node-x: 15px;
  --about-pad: clamp(20px, 3vw, 30px);
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-about .breadcrumbs {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(18px, 4vw, 40px) 0 clamp(34px, 6vw, 72px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  min-width: 0;
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 4.1rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--sand);
  max-width: 17em;
}

.page-about .about-hero__hl {
  color: var(--gold);
  border-bottom: 3px solid var(--gold-deep);
  padding-bottom: 2px;
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 34em;
  color: var(--cool);
  font-size: 1.0625rem;
  line-height: 1.85;
  letter-spacing: .01em;
}

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

.page-about .about-hero__panel {
  padding: var(--about-pad);
  border-left: 3px solid var(--gold);
  min-width: 0;
}

.page-about .about-hero__panel-title {
  margin: 0 0 18px;
  font-size: .75rem;
  letter-spacing: .18em;
  color: var(--gold);
}

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

.page-about .about-hero__facts li {
  display: grid;
  gap: 5px;
}

.page-about .about-hero__fact-num {
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--sand);
}

.page-about .about-hero__fact-txt {
  font-size: .875rem;
  line-height: 1.65;
  color: var(--cool);
}

.page-about .about-hero__panel-note {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--struct);
  font-size: .8125rem;
  line-height: 1.75;
  color: var(--cool);
}

/* ---------- 发展主线 ---------- */
.page-about .about-lane {
  position: relative;
  overflow: hidden;
  margin: clamp(20px, 4vw, 36px) 0;
  padding: clamp(38px, 7vw, 92px) 0 clamp(44px, 8vw, 96px);
  border-top: 1px solid var(--struct);
  border-bottom: 1px solid var(--struct);
}

.page-about .about-lane__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-lane__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
  filter: saturate(.5) contrast(1.15);
}

.page-about .about-lane__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(165deg, rgba(11, 14, 19, .5) 0%, rgba(11, 14, 19, .9) 48%, #0B0E13 100%);
}

.page-about .about-lane__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-tl {
  list-style: none;
  margin: clamp(24px, 5vw, 44px) 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: var(--about-node-x);
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--struct) 34%, var(--struct) 100%);
}

.page-about .about-tl__item {
  position: relative;
  padding-left: 42px;
}

.page-about .about-tl__item + .about-tl__item {
  margin-top: 10px;
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 20px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(232, 163, 61, .14);
}

.page-about .about-tl__node {
  border: 1px solid transparent;
  border-radius: var(--r-md);
  background: rgba(20, 26, 34, .74);
  transition: border-color .16s var(--ease), background-color .16s var(--ease);
}

.page-about .about-tl__node[open] {
  border-color: var(--struct);
  background: var(--panel);
}

.page-about .about-tl__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-tl__idx {
  font-size: .8125rem;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-about .about-tl__stage {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--sand);
}

.page-about .about-tl__toggle {
  font-size: 1.05rem;
  line-height: 1;
  color: var(--cool);
  transition: transform .16s var(--ease), color .16s var(--ease);
}

.page-about .about-tl__node[open] .about-tl__toggle {
  transform: rotate(45deg);
  color: var(--gold);
}

.page-about .about-tl__body {
  padding: 0 16px 18px;
}

.page-about .about-tl__body p {
  margin: 0;
  max-width: 34em;
  color: var(--cool);
  line-height: 1.8;
}

.page-about .about-tl__body p + p {
  margin-top: 10px;
}

/* ---------- 四大板块 ---------- */
.page-about .about-pillars__grid {
  display: grid;
  gap: clamp(16px, 3vw, 24px);
  margin-top: clamp(24px, 5vw, 44px);
  min-width: 0;
}

.page-about .about-pillar {
  position: relative;
  overflow: hidden;
  padding: var(--about-pad);
  background: var(--panel);
  border: 1px solid var(--struct);
  border-radius: var(--r-md);
}

.page-about .about-pillar--odds {
  border-left: 3px solid var(--gold);
}

.page-about .about-pillar--transfer {
  border-left: 3px solid var(--violet);
}

.page-about .about-pillar--coach {
  border-left: 3px solid var(--blue);
}

.page-about .about-pillar--review {
  border-left: 3px solid var(--mint);
}

.page-about .about-pillar__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--sand);
}

.page-about .about-pillar__lead {
  margin: 12px 0 0;
  max-width: 34em;
  color: var(--cool);
  line-height: 1.8;
}

.page-about .about-pillar__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 18px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--struct);
  font-size: .8125rem;
  color: var(--cool);
}

.page-about .about-spark {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 18px;
}

.page-about .about-spark__grid {
  fill: none;
  stroke: var(--struct);
  stroke-width: 1;
}

.page-about .about-spark__line {
  fill: none;
  stroke: var(--gold);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-about .about-chain {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  counter-reset: chain;
}

.page-about .about-chain__link {
  position: relative;
  counter-increment: chain;
  padding: 8px 12px 8px 28px;
  border: 1px dashed var(--struct);
  border-radius: var(--r-sm);
  font-size: .8125rem;
  color: var(--sand);
}

.page-about .about-chain__link::before {
  content: counter(chain, decimal-leading-zero);
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: .6875rem;
  color: var(--violet);
}

.page-about .about-pillar__nums {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 34px;
  margin-top: 18px;
}

.page-about .about-quote {
  margin: 18px 0 0;
  padding: 4px 0 4px 18px;
  border-left: 5px solid var(--mint);
}

.page-about .about-quote p {
  margin: 0;
  max-width: 34em;
  color: var(--cool);
  line-height: 1.85;
}

/* ---------- 联赛线覆盖 ---------- */
.page-about .about-map {
  padding: clamp(34px, 6vw, 72px) 0;
}

.page-about .about-map__layout {
  display: grid;
  gap: clamp(20px, 4vw, 34px);
  margin-top: clamp(22px, 4vw, 38px);
  min-width: 0;
}

.page-about .about-map__figure {
  margin: 0;
  min-width: 0;
}

.page-about .about-map__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-md);
  border: 1px solid var(--struct);
  filter: saturate(.68) contrast(1.08);
}

.page-about .about-map__caption {
  margin-top: 10px;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--cool);
}

.page-about .about-map__zones {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-about .about-zone {
  padding: 18px 20px;
  background: var(--panel-2);
  border-left: 3px solid var(--struct);
  border-radius: var(--r-sm);
  transition: background-color .16s var(--ease), transform .16s var(--ease);
}

.page-about .about-zone:hover {
  background: var(--panel);
  transform: translateX(3px);
}

.page-about .about-zone h3 {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 1.05rem;
  color: var(--sand);
}

.page-about .about-zone h3 .mono {
  font-size: 1.45rem;
  color: var(--gold);
  line-height: 1;
}

.page-about .about-zone p {
  margin: 9px 0 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--cool);
  max-width: 34em;
}

.page-about .about-zone--global {
  border-left: 3px dashed var(--blue);
}

.page-about .about-zone--region {
  border-left: 3px solid var(--violet);
}

.page-about .about-zone--local {
  border-left: 5px solid var(--gold);
  background: rgba(232, 163, 61, .07);
}

/* ---------- 本地化机制 ---------- */
.page-about .about-local {
  padding: clamp(30px, 6vw, 64px) 0;
  border-top: 1px solid var(--struct);
}

.page-about .about-check {
  list-style: none;
  margin: clamp(22px, 4vw, 38px) 0 0;
  padding: 0;
  border-top: 1px solid var(--struct);
}

.page-about .about-check__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--struct);
}

.page-about .about-check__num {
  grid-row: span 2;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-check__name {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--sand);
}

.page-about .about-check__item p {
  margin: 0;
  max-width: 34em;
  color: var(--cool);
  line-height: 1.8;
}

.page-about .about-local__foot {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--cool);
}

.page-about .about-local__foot a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(30px, 6vw, 64px) 0;
}

.page-about .about-team__layout {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
  margin-top: clamp(22px, 4vw, 38px);
  min-width: 0;
}

.page-about .about-team__stack {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-about .about-role {
  border: 1px solid var(--struct);
  border-radius: var(--r-md);
  background: var(--panel);
}

.page-about .about-role[open] {
  border-color: var(--gold-deep);
}

.page-about .about-role__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-role__key {
  font-size: .75rem;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-about .about-role__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--sand);
}

.page-about .about-role__toggle {
  font-size: 1.05rem;
  line-height: 1;
  color: var(--cool);
  transition: transform .16s var(--ease), color .16s var(--ease);
}

.page-about .about-role[open] .about-role__toggle {
  transform: rotate(45deg);
  color: var(--gold);
}

.page-about .about-role__list {
  margin: 0;
  padding: 0 18px 18px 38px;
  display: grid;
  gap: 8px;
}

.page-about .about-role__list li {
  color: var(--cool);
  font-size: .9375rem;
  line-height: 1.75;
  position: relative;
}

.page-about .about-role__list li::before {
  content: "";
  position: absolute;
  left: -16px;
  top: .68em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-deep);
}

.page-about .about-team__figure {
  margin: 0;
  min-width: 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-md);
  border: 1px solid var(--struct);
  filter: saturate(.55) contrast(1.12);
}

.page-about .about-team__figure figcaption {
  margin-top: 10px;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--cool);
}

/* ---------- 协作与认可 ---------- */
.page-about .about-eco {
  padding: clamp(30px, 6vw, 64px) 0;
  border-top: 1px solid var(--struct);
}

.page-about .about-eco__grid {
  display: grid;
  gap: clamp(20px, 4vw, 34px);
  margin-top: clamp(22px, 4vw, 38px);
  min-width: 0;
}

.page-about .about-eco__col {
  padding: 20px 22px;
  background: var(--panel-2);
  border-radius: var(--r-md);
  border-top: 2px solid var(--struct);
}

.page-about .about-eco__sub {
  margin: 0 0 14px;
  font-size: .8125rem;
  letter-spacing: .14em;
  color: var(--gold);
  font-family: var(--font-mono);
}

.page-about .about-eco__list {
  margin: 0;
  padding: 0 0 0 18px;
  display: grid;
  gap: 10px;
}

.page-about .about-eco__list li {
  color: var(--cool);
  font-size: .9375rem;
  line-height: 1.8;
}

.page-about .about-eco__list li::marker {
  color: var(--gold-deep);
}

.page-about .about-eco__text {
  margin: 0;
  max-width: 34em;
  color: var(--cool);
  font-size: .9375rem;
  line-height: 1.85;
}

.page-about .about-eco__text + .about-eco__text {
  margin-top: 14px;
}

.page-about .about-eco__more {
  margin: 24px 0 0;
  max-width: 34em;
  color: var(--cool);
  font-size: .9375rem;
  line-height: 1.85;
}

.page-about .about-eco__more a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 收束 ---------- */
.page-about .about-close {
  padding: clamp(24px, 5vw, 48px) 0 0;
}

.page-about .about-close__card {
  padding: clamp(22px, 4vw, 34px);
  border-left: 3px solid var(--gold);
}

.page-about .about-close__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.55rem);
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--sand);
}

.page-about .about-close__text {
  margin: 12px 0 0;
  max-width: 34em;
  color: var(--cool);
  line-height: 1.85;
}

.page-about .about-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-close__actions .copy-btn {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 760px) {
  .page-about .about-role:nth-child(2) {
    margin-left: 18px;
  }

  .page-about .about-role:nth-child(3) {
    margin-left: 36px;
  }

  .page-about .about-role:nth-child(4) {
    margin-left: 54px;
  }

  .page-about .about-check__item {
    grid-template-columns: 4rem minmax(0, 1fr);
    gap: 10px 26px;
    padding: 26px 0;
  }

  .page-about .about-check__num {
    font-size: 2rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(280px, .86fr);
    align-items: start;
  }

  .page-about .about-pillars__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .about-pillar--odds {
    grid-column: span 7;
  }

  .page-about .about-pillar--transfer {
    grid-column: span 5;
    margin-top: clamp(0px, 2.4vw, 26px);
  }

  .page-about .about-pillar--coach {
    grid-column: span 5;
  }

  .page-about .about-pillar--review {
    grid-column: span 7;
    margin-top: clamp(0px, 1.6vw, 18px);
  }

  .page-about .about-map__layout {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .92fr);
    align-items: start;
  }

  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .85fr);
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-zone,
  .page-about .about-tl__node,
  .page-about .about-tl__toggle,
  .page-about .about-role__toggle {
    transition: none;
  }

  .page-about .about-zone:hover {
    transform: none;
  }
}
<<<END>>>