.page-about {
  --about-scope: 1;
  --about-gap: clamp(18px, 3vw, 32px);
  --about-pad: clamp(20px, 3.4vw, 46px);
  display: block;
  padding-bottom: clamp(56px, 9vw, 110px);
  color: var(--silver);
}

.page-about .about-crumb {
  padding-block: clamp(16px, 2.6vw, 28px) clamp(8px, 1.4vw, 14px);
}

.page-about .about-crumb__sep {
  margin-inline: 10px;
  color: var(--gold);
  opacity: 0.7;
}

/* ---------- 01 档案墙开场 ---------- */

.page-about .about-hero {
  margin-bottom: clamp(38px, 6vw, 82px);
}

.page-about .about-hero__frame {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3.6vw, 52px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(158deg, var(--panel) 0%, #0A0F1D 52%, var(--bg) 100%);
  box-shadow: var(--shadow-lift);
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px dashed rgba(199, 206, 218, 0.13);
  border-radius: calc(var(--radius-lg) - 10px);
  pointer-events: none;
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  width: 460px;
  height: 460px;
  top: -190px;
  right: -150px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 164, 27, 0.17), transparent 68%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.6vw, 44px);
  align-items: center;
}

.page-about .about-hero__eyebrow {
  margin-bottom: 14px;
  color: var(--gold);
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-size: clamp(1.9rem, 5.4vw, 3.5rem);
  font-weight: 300;
  line-height: 1.18;
  letter-spacing: 0.04em;
  color: var(--ivory);
}

.page-about .about-hero__lead {
  max-width: 56ch;
  margin: 0 0 26px;
  font-size: var(--fs-body);
  line-height: 1.9;
  color: var(--silver);
}

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

.page-about .about-hero__figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px -34px rgba(0, 0, 0, 0.98);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.06);
}

.page-about .about-ledger {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: clamp(18px, 2.4vw, 26px) 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
}

.page-about .about-ledger__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 14px;
  border-left: 2px solid rgba(255, 164, 27, 0.4);
}

.page-about .about-ledger__num {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--gold-soft);
}

.page-about .about-ledger__label {
  font-size: var(--fs-index);
  letter-spacing: 0.12em;
  color: var(--silver);
  opacity: 0.82;
}

/* ---------- 主体骨架：赛季轨道 + 内容流 ---------- */

.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
}

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

.page-about .about-flow {
  display: grid;
  gap: clamp(52px, 8vw, 104px);
  min-width: 0;
}

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

.page-about .about-head {
  display: flex;
  gap: clamp(12px, 2vw, 26px);
  align-items: flex-start;
  margin-bottom: clamp(22px, 3.4vw, 38px);
}

.page-about .about-head .section-num {
  flex: 0 0 auto;
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  font-weight: 300;
  line-height: 0.9;
  color: var(--gold);
  opacity: 0.9;
}

.page-about .about-head__text {
  min-width: 0;
  padding-top: 4px;
}

.page-about .about-head__text .eyebrow {
  margin: 0 0 8px;
  color: var(--ice);
}

.page-about .about-head .section-title {
  margin: 0;
  font-size: clamp(1.3rem, 3.1vw, 2.1rem);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: 0.03em;
  color: var(--ivory);
}

.page-about .about-lede {
  max-width: 62ch;
  margin: 0 0 clamp(20px, 3vw, 32px);
  font-size: var(--fs-body);
  line-height: 1.9;
}

/* ---------- 02 赛季轨迹 ---------- */

.page-about .about-timeline {
  list-style: none;
  margin: 0 0 clamp(24px, 3.6vw, 40px);
  padding: 0 0 12px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-timeline__node {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--panel);
  color: var(--silver);
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, color 0.25s ease;
}

.page-about .about-timeline__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(255, 164, 27, 0.16);
}

.page-about .about-timeline__tag {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--gold-soft);
}

.page-about .about-timeline__name {
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

.page-about .about-timeline__node:hover,
.page-about .about-timeline__node:focus-visible {
  transform: translateY(-3px);
  border-color: var(--gold);
  background: var(--panel-2);
  color: var(--ivory);
}

.page-about .about-timeline__node:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 3px;
}

.page-about .about-eras {
  display: grid;
  gap: 14px;
}

.page-about .about-era {
  position: relative;
  padding: clamp(20px, 2.8vw, 32px) clamp(20px, 3vw, 36px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-md);
  background: linear-gradient(120deg, var(--panel) 0%, rgba(14, 20, 36, 0.55) 100%);
  scroll-margin-top: calc(var(--rail-h) + 30px);
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.page-about .about-era:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 164, 27, 0.55);
  box-shadow: var(--shadow-lift);
}

.page-about .about-era__tag {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .about-era__title {
  margin: 0 0 12px;
  font-size: clamp(1.05rem, 2.1vw, 1.35rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ivory);
}

.page-about .about-era__text {
  margin: 0;
  max-width: 68ch;
  line-height: 1.9;
}

/* ---------- 03 赛区矩阵 ---------- */

.page-about .about-region-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.4vw, 40px);
  align-items: start;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-about .about-region-intro__text p {
  margin: 0 0 16px;
  max-width: 58ch;
  line-height: 1.9;
}

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

.page-about .about-region-figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
}

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

.page-about .about-regions {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-region {
  position: relative;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  transition: transform 0.28s ease, border-color 0.28s ease, background-color 0.28s ease;
}

.page-about .about-region:hover,
.page-about .about-region:focus-within {
  transform: translateY(-4px);
  border-color: var(--gold);
  background: var(--panel-2);
}

.page-about .about-region__code {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 10px;
  border: 1px solid rgba(111, 227, 255, 0.4);
  border-radius: var(--radius-pill);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--ice);
}

.page-about .about-region__name {
  margin: 0 0 10px;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--ivory);
}

.page-about .about-region__text {
  margin: 0 0 16px;
  line-height: 1.8;
  font-size: 0.94rem;
}

.page-about .about-region__meta {
  display: block;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gold-soft);
}

/* ---------- 04 内容团队 ---------- */

.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}

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

.page-about .about-team__card {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, var(--panel) 0%, rgba(18, 26, 46, 0.7) 100%);
  transition: transform 0.28s ease, border-color 0.28s ease;
}

.page-about .about-team__card:hover {
  transform: translateY(-4px);
  border-color: rgba(122, 92, 255, 0.6);
}

.page-about .about-team__count {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 164, 27, 0.12);
  border: 1px solid rgba(255, 164, 27, 0.4);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--gold-soft);
}

.page-about .about-team__name {
  margin: 0 0 10px;
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--ivory);
}

.page-about .about-team__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
}

.page-about .about-team__figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-about .about-team__note {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(111, 227, 255, 0.05);
  border-left: 3px solid var(--ice);
  max-width: 72ch;
  line-height: 1.9;
}

/* ---------- 05 合作生态 ---------- */

.page-about .about-ecology {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .about-ecology__item {
  position: relative;
  padding: clamp(20px, 2.8vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg) var(--radius-md) var(--radius-md) var(--radius-lg);
  background: var(--panel);
  transition: transform 0.28s ease, border-color 0.28s ease;
}

.page-about .about-ecology__item:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 164, 27, 0.5);
}

.page-about .about-ecology__idx {
  display: block;
  margin-bottom: 10px;
  font-size: 1.6rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--violet);
}

.page-about .about-ecology__name {
  margin: 0 0 10px;
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--ivory);
}

.page-about .about-ecology__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
}

.page-about .about-ecology__tail {
  margin: clamp(22px, 3vw, 34px) 0 0;
  max-width: 70ch;
  line-height: 1.9;
  padding-left: 16px;
  border-left: 2px solid rgba(255, 164, 27, 0.45);
}

/* ---------- 收尾入口 ---------- */

.page-about .about-cta {
  padding-top: clamp(26px, 4vw, 46px);
  border-top: 1px solid var(--line);
}

.page-about .about-cta__title {
  margin: 0 0 clamp(18px, 2.6vw, 28px);
  font-size: clamp(1.2rem, 2.6vw, 1.7rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ivory);
}

.page-about .about-cta__links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .about-cta__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "idx name arrow"
    "idx desc arrow";
  align-items: center;
  gap: 2px 16px;
  padding: 18px clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  color: var(--silver);
  text-decoration: none;
  transition: transform 0.28s ease, border-color 0.28s ease, background-color 0.28s ease, color 0.28s ease;
}

.page-about .about-cta__idx {
  grid-area: idx;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .about-cta__name {
  grid-area: name;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--ivory);
}

.page-about .about-cta__desc {
  grid-area: desc;
  font-size: 0.85rem;
  opacity: 0.85;
}

.page-about .about-cta__arrow {
  grid-area: arrow;
  font-size: 1.2rem;
  color: var(--gold);
  transition: transform 0.28s ease;
}

.page-about .about-cta__link:hover,
.page-about .about-cta__link:focus-visible {
  transform: translateY(-4px);
  border-color: var(--gold);
  background: var(--panel-2);
  color: var(--ivory);
}

.page-about .about-cta__link:hover .about-cta__arrow,
.page-about .about-cta__link:focus-visible .about-cta__arrow {
  transform: translateX(5px);
}

.page-about .about-cta__link:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-ledger {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }

  .page-about .about-ledger {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-body {
    grid-template-columns: 158px minmax(0, 1fr);
    gap: clamp(30px, 4vw, 70px);
    align-items: start;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--rail-h) + 26px);
    align-self: start;
  }

  .page-about .about-rail__cap {
    margin: 0 0 20px;
    font-size: 0.66rem;
    letter-spacing: 0.24em;
    color: var(--silver);
    opacity: 0.6;
  }

  .page-about .about-rail__ticks {
    list-style: none;
    margin: 0 0 26px;
    padding: 0;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 15px;
  }

  .page-about .about-rail__ticks::before {
    content: "";
    position: absolute;
    left: 5px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: linear-gradient(180deg, var(--gold) 0%, rgba(255, 164, 27, 0.06) 100%);
  }

  .page-about .about-rail__tick {
    position: relative;
    padding-left: 22px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    color: var(--silver);
    opacity: 0.7;
  }

  .page-about .about-rail__tick::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 11px;
    height: 11px;
    border-radius: 50%;
    border: 1px solid var(--line);
    background: var(--panel);
  }

  .page-about .about-rail__tick:last-child {
    opacity: 1;
    color: var(--gold-soft);
  }

  .page-about .about-rail__tick:last-child::before {
    border-color: var(--gold);
    background: var(--gold);
    box-shadow: 0 0 0 4px rgba(255, 164, 27, 0.16);
  }

  .page-about .about-rail__nav {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
  }

  .page-about .about-rail__nav a {
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    color: var(--silver);
    text-decoration: none;
    transition: color 0.24s ease, transform 0.24s ease;
  }

  .page-about .about-rail__nav a:hover,
  .page-about .about-rail__nav a:focus-visible {
    color: var(--gold);
    transform: translateX(3px);
  }

  .page-about .about-rail__nav a:focus-visible {
    outline: 2px solid var(--ice);
    outline-offset: 3px;
  }

  .page-about .about-region-intro {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

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

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

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

@media (min-width: 1200px) {
  .page-about .about-body {
    grid-template-columns: 176px minmax(0, 1fr);
  }

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

  .page-about .about-era:nth-child(2),
  .page-about .about-era:nth-child(4) {
    margin-top: 34px;
  }

  .page-about .about-era:last-child {
    grid-column: 1 / -1;
    max-width: 78ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__node,
  .page-about .about-era,
  .page-about .about-region,
  .page-about .about-team__card,
  .page-about .about-ecology__item,
  .page-about .about-cta__link,
  .page-about .about-cta__arrow,
  .page-about .about-rail__nav a {
    transition: none;
  }

  .page-about .about-timeline__node:hover,
  .page-about .about-era:hover,
  .page-about .about-region:hover,
  .page-about .about-team__card:hover,
  .page-about .about-ecology__item:hover,
  .page-about .about-cta__link:hover {
    transform: none;
  }
}
<<<END>>>