.page-about {
  --about-band: 240px;
  --about-rail: 176px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.75;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 0 0 44px;
  border-bottom: 1px solid var(--silver);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 24px 24px;
}

.page-about .about-hero__band {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--about-band);
  background-color: var(--cobalt);
  background-image:
    linear-gradient(var(--line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 24px 24px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 46px), 0 100%);
}

.page-about .about-hero__band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ochre);
  clip-path: polygon(0 100%, 0 calc(100% - 14px), 100% calc(100% - 60px), 100% calc(100% - 46px));
}

.page-about .about-hero__inner {
  position: relative;
  padding-top: calc(var(--header-total) + 14px);
}

.page-about .about-hero__crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: rgba(244, 239, 231, 0.76);
}

.page-about .about-hero__crumbs a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(244, 239, 231, 0.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-hero__crumbs a:hover,
.page-about .about-hero__crumbs a:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
}

.page-about .about-hero__sep {
  color: rgba(244, 239, 231, 0.5);
}

.page-about .about-hero__title {
  margin: 84px 0 0;
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.4vw, 3.75rem);
  line-height: 1.07;
  letter-spacing: -0.02em;
  color: var(--ink);
  transform: skewX(-6deg);
  transform-origin: left center;
}

.page-about .about-hero__lead {
  margin: 26px 0 0;
  max-width: 60ch;
  padding-left: 18px;
  border-left: 4px solid var(--lime);
  font-family: var(--font-editorial);
  font-size: var(--fs-19);
  line-height: 1.7;
  color: var(--ink);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  max-width: 760px;
  border: 1px solid var(--silver);
  background: var(--silver);
}

.page-about .about-hero__facts li {
  background: var(--paper);
  padding: 14px 16px;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-hero__num {
  font-size: var(--fs-24);
  font-weight: 700;
  color: var(--ochre);
  line-height: 1.2;
}

.page-about .about-hero__label {
  font-size: var(--fs-14);
  color: var(--ink);
}

/* ---------- 通用章节 ---------- */
.page-about .about-sec {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-sec--sand {
  background: var(--sand);
}

.page-about .about-sec--cobalt {
  background-color: var(--cobalt);
  background-image:
    linear-gradient(var(--line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--paper);
}

.page-about .about-sec--ink {
  background-color: var(--indigo);
  background-image:
    linear-gradient(var(--line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--paper);
}

.page-about .about-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 20px;
  padding-bottom: 14px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--silver);
}

.page-about .about-head__index {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--ochre);
  text-transform: uppercase;
}

.page-about .about-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.4vw, 2.25rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-about .about-head--dark {
  border-bottom-color: rgba(199, 204, 209, 0.32);
}

.page-about .about-head--dark .about-head__index {
  color: var(--lime);
}

.page-about .about-head--dark .about-head__title {
  color: var(--paper);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-about .about-rail {
  border-left: 3px solid var(--ochre);
  padding-left: 14px;
}

.page-about .about-rail__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--ochre);
}

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

.page-about .about-rail__link {
  display: inline-block;
  padding: 5px 10px;
  font-size: var(--fs-14);
  text-decoration: none;
  color: var(--ink);
  background: var(--sand);
  border: 1px solid var(--silver);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  background: var(--cobalt);
  color: var(--paper);
  border-color: var(--cobalt);
}

.page-about .about-rail__note {
  margin: 14px 0 0;
  max-width: 26ch;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: rgba(20, 22, 26, 0.62);
}

.page-about .about-tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--silver);
}

.page-about .about-tl__node {
  position: relative;
  padding: 0 0 40px 36px;
}

.page-about .about-tl__node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 17px;
  height: 17px;
  background: var(--wine);
  border: 1px solid var(--ochre-deep);
}

.page-about .about-tl__node::after {
  content: "";
  position: absolute;
  left: 16px;
  top: 15px;
  width: 16px;
  height: 1px;
  background: var(--ochre);
  transform: rotate(12deg);
  transform-origin: left center;
}

.page-about .about-tl__node:target {
  background: linear-gradient(90deg, rgba(168, 255, 62, 0.16), transparent 65%);
  box-shadow: inset 3px 0 0 var(--lime);
}

.page-about .about-tl__year {
  display: inline-block;
  font-size: var(--fs-24);
  font-weight: 700;
  color: var(--ochre);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-tl__year:hover,
.page-about .about-tl__year:focus-visible {
  color: var(--cobalt);
  border-color: var(--lime);
}

.page-about .about-tl__title {
  margin: 4px 0 8px;
  font-size: var(--fs-19);
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.4;
}

.page-about .about-tl__text {
  margin: 0;
  max-width: 66ch;
  font-size: var(--fs-16);
}

.page-about .about-tl__tags {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-tl__figure {
  margin: 18px 0 0;
  max-width: 560px;
}

/* ---------- 覆盖能力 ---------- */
.page-about .cov-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .cov-lead {
  margin: 0 0 22px;
  max-width: 62ch;
  font-family: var(--font-editorial);
  font-size: var(--fs-19);
  line-height: 1.7;
  color: var(--paper);
}

.page-about .cov-stats {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .cov-stat {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid rgba(199, 204, 209, 0.28);
}

.page-about .cov-stat__num {
  flex: 0 0 auto;
  min-width: 62px;
  font-size: var(--fs-32);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .cov-stat__title {
  margin: 0 0 4px;
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--paper);
}

.page-about .cov-stat p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: rgba(244, 239, 231, 0.84);
}

.page-about .cov-note {
  margin: 22px 0 0;
  padding: 14px 16px;
  border-left: 4px solid var(--ochre);
  background: rgba(244, 239, 231, 0.07);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: rgba(244, 239, 231, 0.92);
}

.page-about .cov-map {
  margin: 0;
  padding: 16px;
  border: 1px solid rgba(199, 204, 209, 0.34);
  background: rgba(20, 22, 26, 0.22);
}

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

.page-about .cov-map__caption {
  margin-top: 12px;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: rgba(244, 239, 231, 0.7);
}

/* ---------- 档案室 ---------- */
.page-about .arch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-about .arch-block {
  padding: 0 0 20px 18px;
  border-left: 4px solid var(--ochre);
  border-bottom: 1px solid var(--line);
}

.page-about .arch-block:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .arch-block__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: var(--fs-19);
  font-weight: 700;
}

.page-about .arch-block p {
  margin: 0;
  max-width: 60ch;
  font-size: var(--fs-16);
}

.page-about .arch-figure {
  margin: 0;
}

.page-about .arch-side__hint {
  margin: 16px 0 10px;
  font-size: var(--fs-12);
  color: rgba(20, 22, 26, 0.62);
}

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

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

.page-about .about-tag .label-tag {
  cursor: default;
}

.page-about .about-tag .label-tag:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-about .about-tag__pop {
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  z-index: 4;
  max-width: 220px;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.5;
  background: var(--ink);
  color: var(--paper);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease);
}

.page-about .about-tag:hover .about-tag__pop,
.page-about .about-tag:focus-within .about-tag__pop {
  opacity: 1;
  visibility: visible;
  transform: none;
}

/* ---------- 赛季 ---------- */
.page-about .season-intro {
  margin: 0 0 26px;
  max-width: 62ch;
  font-family: var(--font-editorial);
  font-size: var(--fs-19);
  line-height: 1.7;
}

.page-about .season-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(230px, 82%);
  gap: 16px;
  overflow-x: auto;
  padding: 4px 2px 18px;
  scroll-snap-type: x mandatory;
}

.page-about .season-card {
  scroll-snap-align: start;
  padding: 20px 18px;
  background: var(--paper);
  border: 1px solid var(--silver);
  border-top: 4px solid var(--cobalt);
  box-shadow: var(--shadow-paper);
}

.page-about .season-card__code {
  display: block;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--wine);
}

.page-about .season-card__title {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-size: var(--fs-19);
  font-weight: 700;
}

.page-about .season-card p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
}

/* ---------- 合作理由 ---------- */
.page-about .why-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .why-item {
  padding: 22px 20px;
  background: var(--paper);
  border: 1px solid var(--silver);
  border-left: 5px solid var(--ochre);
  box-shadow: var(--shadow-paper);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .why-item:hover {
  transform: translateY(-2px);
  border-color: var(--lime);
  box-shadow: var(--shadow-paper-hover);
}

.page-about .why-item__num {
  display: block;
  font-size: var(--fs-14);
  letter-spacing: 0.14em;
  color: var(--cobalt);
}

.page-about .why-item__title {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-size: var(--fs-19);
  font-weight: 700;
}

.page-about .why-item p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .team-text p {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: var(--fs-16);
  color: rgba(244, 239, 231, 0.9);
}

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

.page-about .team-points li {
  position: relative;
  padding-left: 22px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: rgba(244, 239, 231, 0.86);
}

.page-about .team-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  background: var(--lime);
}

.page-about .team-figure {
  margin: 0;
}

/* ---------- 延伸入口 ---------- */
.page-about .about-next {
  background: var(--sand);
  border-top: 5px solid var(--ochre);
  padding: 46px 0;
}

.page-about .about-next__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-next__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 900;
  line-height: 1.25;
}

.page-about .about-next__lead p {
  margin: 0;
  max-width: 52ch;
  font-size: var(--fs-16);
}

.page-about .about-next__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--silver);
  border: 1px solid var(--silver);
}

.page-about .about-next__links li {
  background: var(--paper);
}

.page-about .about-next__links a {
  display: block;
  padding: 14px 16px;
  font-size: var(--fs-16);
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-about .about-next__links a:hover,
.page-about .about-next__links a:focus-visible {
  background: var(--cobalt);
  color: var(--paper);
  padding-left: 24px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .season-track {
    grid-auto-columns: minmax(240px, 46%);
  }

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

@media (min-width: 900px) {
  .page-about {
    --about-band: 236px;
  }

  .page-about .about-sec {
    padding: 76px 0;
  }

  .page-about .about-hero__title {
    margin-top: 92px;
  }

  .page-about .about-timeline__grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 52px;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-total) + 28px);
    align-self: start;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-about .about-rail__link {
    min-width: 84px;
    text-align: center;
  }

  .page-about .cov-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .arch-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .season-track {
    grid-auto-flow: row;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    overflow-x: visible;
    padding-bottom: 4px;
  }

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

  .page-about .team-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
    align-items: center;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tag__pop,
  .page-about .why-item,
  .page-about .about-next__links a {
    transition: none;
  }

  .page-about .why-item:hover {
    transform: none;
  }
}
</final>
</result>