.page-about {
  --ab-blue-ink: #6E90FF;
  --ab-red-ink: #FF5468;
  position: relative;
  color: var(--ink);
  font-family: var(--font-body);
  background-color: var(--void);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: clamp(14px, 2.6vw, 24px) 0;
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--edge);
  background:
    radial-gradient(680px 400px at 8% 0%, rgba(224, 37, 60, 0.28), transparent 72%),
    radial-gradient(720px 430px at 94% 4%, rgba(27, 69, 200, 0.34), transparent 72%),
    linear-gradient(180deg, #0C1220 0%, var(--void) 100%);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(233, 238, 247, 0.045) 0 1px, transparent 1px 84px),
    repeating-linear-gradient(0deg, rgba(233, 238, 247, 0.045) 0 1px, transparent 1px 84px);
}

.page-about .ab-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  padding-block: clamp(30px, 5.5vw, 68px) clamp(34px, 6vw, 72px);
}

.page-about .ab-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
}

.page-about .ab-hero__coord {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .ab-hero__coord i {
  font-style: normal;
  font-size: 8px;
  color: var(--edge);
}

.page-about .ab-hero__title {
  display: grid;
  gap: 2px;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 8.6vw, 100px);
  line-height: 1.02;
  letter-spacing: -0.015em;
}

.page-about .ab-hero__word {
  display: block;
}

.page-about .ab-hero__word--red {
  color: var(--ab-red-ink);
}

.page-about .ab-hero__word--mid {
  color: var(--ink);
}

.page-about .ab-hero__word--blue {
  color: var(--ab-blue-ink);
}

.page-about .ab-hero__lede {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--ink);
  opacity: 0.84;
}

.page-about .ab-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(6px, 1.4vw, 16px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--edge);
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .ab-stat {
  display: grid;
  gap: 6px;
  padding: 16px 18px 18px;
  background: var(--panel);
  border-top: 3px solid var(--red);
  transition: background var(--t);
}

.page-about .ab-stat--blue {
  border-top-color: var(--cyan);
}

.page-about .ab-stat:hover {
  background: rgba(34, 224, 210, 0.06);
}

.page-about .ab-stat__n {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .ab-stat__l {
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 栏目索引条 ---------- */
.page-about .ab-jump {
  background: rgba(10, 14, 22, 0.94);
  border-bottom: 1px solid var(--edge);
}

.page-about .ab-jump__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 10px 0;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-about .ab-jump__link {
  flex: 0 0 auto;
  scroll-snap-align: start;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 13px;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--edge);
  border-radius: 999px;
  transition: color var(--t), border-color var(--t), background var(--t);
}

.page-about .ab-jump__link:hover,
.page-about .ab-jump__link:focus-visible {
  color: var(--ink);
  border-color: var(--cyan);
  background: rgba(34, 224, 210, 0.1);
  outline: none;
}

/* ---------- 章节骨架 ---------- */
.page-about .ab-sec__inner {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
}

.page-about .ab-sec__head {
  display: grid;
  gap: 12px;
  max-width: 66ch;
}

.page-about .ab-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-about .ab-sec__lede {
  margin: 0;
  max-width: 58ch;
  color: var(--muted);
}

.page-about .ab-rule {
  display: block;
  height: 2px;
  border: 0;
  margin: clamp(30px, 5.5vw, 66px) 0;
  background: linear-gradient(
    90deg,
    var(--red) 0%,
    var(--orange) 26%,
    rgba(38, 50, 74, 0.2) 50%,
    var(--cyan) 74%,
    var(--blue) 100%
  );
  opacity: 0.6;
}

/* ---------- 起点 ---------- */
.page-about .ab-split {
  display: grid;
  gap: clamp(20px, 3.4vw, 40px);
}

.page-about .ab-aside__panel {
  border: 1px solid var(--edge);
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--r-lg) var(--r-lg) 0;
  padding: 22px 22px 24px;
  background: var(--panel);
}

.page-about .ab-aside__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .ab-aside__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 内容生产线 ---------- */
.page-about .ab-pipe {
  display: grid;
  gap: clamp(22px, 4vw, 42px);
}

.page-about .ab-pipe__fig {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .ab-pipe__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

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

.page-about .ab-step {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 20px 20px 22px 24px;
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  transition: border-color var(--t), transform var(--t), background var(--t);
}

.page-about .ab-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--red), var(--orange));
}

.page-about .ab-step:nth-child(2)::before {
  background: linear-gradient(180deg, var(--orange), var(--gold));
}

.page-about .ab-step:nth-child(3)::before {
  background: linear-gradient(180deg, var(--cyan), var(--blue));
}

.page-about .ab-step:nth-child(4)::before {
  background: linear-gradient(180deg, var(--blue), var(--cyan));
}

.page-about .ab-step__num {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .ab-step__title {
  margin: 0;
  color: var(--ink);
}

.page-about .ab-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 三个赛季 ---------- */
.page-about .ab-seasons__fig {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .ab-seasons__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
}

.page-about .ab-timeline {
  position: relative;
  display: grid;
  gap: clamp(16px, 2.6vw, 28px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--red), var(--orange), var(--cyan), var(--blue));
  opacity: 0.5;
}

.page-about .ab-node {
  position: relative;
  padding-left: 48px;
}

.page-about .ab-node__marker {
  position: absolute;
  left: 0;
  top: 4px;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  font-size: 13px;
  font-weight: 700;
  color: var(--red);
  background: var(--void);
  border: 2px solid var(--red);
  border-radius: 50%;
  transition: transform var(--t), box-shadow var(--t);
}

.page-about .ab-node--cyan .ab-node__marker {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-about .ab-node--blue .ab-node__marker {
  color: var(--ab-blue-ink);
  border-color: var(--ab-blue-ink);
}

.page-about .ab-node:hover .ab-node__marker {
  transform: scale(1.12);
  box-shadow: 0 0 0 4px rgba(34, 224, 210, 0.16);
}

.page-about .ab-node__body {
  display: grid;
  gap: 10px;
  padding: 20px 20px 22px;
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  box-shadow: inset 3px 0 0 var(--red);
  transition: border-color var(--t), transform var(--t);
}

.page-about .ab-node--cyan .ab-node__body {
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-about .ab-node--blue .ab-node__body {
  box-shadow: inset 3px 0 0 var(--blue);
}

.page-about .ab-node:hover .ab-node__body {
  border-color: var(--edge);
  transform: translateY(-4px);
}

.page-about .ab-node__title {
  margin: 0;
  color: var(--ink);
}

.page-about .ab-node__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .ab-node__list {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  opacity: 0.88;
}

.page-about .ab-node__list li {
  position: relative;
  padding-left: 16px;
}

.page-about .ab-node__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  background: currentColor;
  transform: rotate(45deg);
  opacity: 0.7;
}

/* ---------- 团队分工 ---------- */
.page-about .ab-roles {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-role {
  display: grid;
  gap: 10px;
  padding: 22px;
  background:
    linear-gradient(158deg, rgba(224, 37, 60, 0.13), transparent 62%),
    var(--panel);
  border: 1px solid var(--edge);
  border-radius: var(--r-lg) var(--r-sm) var(--r-lg) var(--r-sm);
  outline: none;
  transition: border-color var(--t), transform var(--t);
}

.page-about .ab-role--blue {
  background:
    linear-gradient(158deg, rgba(27, 69, 200, 0.18), transparent 62%),
    var(--panel);
}

.page-about .ab-role:focus-visible {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 224, 210, 0.22);
}

.page-about .ab-role:hover {
  border-color: var(--orange);
  transform: translateY(-4px);
}

.page-about .ab-role__n {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--orange);
}

.page-about .ab-role--blue .ab-role__n {
  color: var(--cyan);
}

.page-about .ab-role__title {
  margin: 0;
  color: var(--ink);
}

.page-about .ab-role__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
  opacity: 0.86;
}

.page-about .ab-role__note {
  margin: 0;
  padding-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px dashed var(--edge);
  opacity: 0.6;
  transition: opacity var(--t);
}

.page-about .ab-role:hover .ab-role__note,
.page-about .ab-role:focus-visible .ab-role__note {
  opacity: 1;
}

.page-about .ab-team__foot {
  margin: 0;
  max-width: 70ch;
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 合作生态 ---------- */
.page-about .ab-partners {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-about .ab-partners__text {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

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

.page-about .ab-partners__list li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
  border-bottom: 1px solid var(--edge);
}

.page-about .ab-partners__list .num {
  font-size: 20px;
  font-weight: 700;
  color: var(--red);
}

.page-about .ab-partners__list li:nth-child(even) .num {
  color: var(--cyan);
}

.page-about .ab-partners__fig {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .ab-partners__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 引用与交付 ---------- */
.page-about .ab-deliver {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .ab-deliver__card {
  display: grid;
  gap: 10px;
  border-top: 3px solid var(--red);
}

.page-about .ab-deliver__card:nth-child(2) {
  border-top-color: var(--orange);
}

.page-about .ab-deliver__card:nth-child(3) {
  border-top-color: var(--cyan);
}

.page-about .ab-deliver__k {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--muted);
}

.page-about .ab-deliver__foot {
  display: grid;
  gap: 18px;
  justify-items: start;
}

.page-about .ab-deliver__foot .prose {
  max-width: 64ch;
  margin: 0;
}

/* ---------- 结尾行动区 ---------- */
.page-about .ab-cta {
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .ab-cta__inner {
  display: grid;
  gap: 20px;
  justify-items: start;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--edge);
  border-radius: var(--r-lg) var(--r-sm) var(--r-lg) var(--r-sm);
  background:
    linear-gradient(118deg, rgba(224, 37, 60, 0.22), rgba(10, 14, 22, 0.2) 48%, rgba(27, 69, 200, 0.26)),
    var(--panel);
}

.page-about .ab-cta__text {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.4vw, 26px);
  line-height: 1.5;
  color: var(--ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .ab-step:nth-child(2) {
    margin-left: 22px;
  }

  .page-about .ab-step:nth-child(3) {
    margin-left: 44px;
  }

  .page-about .ab-step:nth-child(4) {
    margin-left: 66px;
  }
}

@media (min-width: 880px) {
  .page-about .ab-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .ab-aside {
    margin-top: clamp(24px, 5vw, 76px);
  }

  .page-about .ab-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .ab-roles .ab-role:nth-child(2) {
    margin-top: 26px;
  }

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

@media (min-width: 960px) {
  .page-about .ab-pipe {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-about .ab-partners {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-about .ab-partners__fig {
    margin-top: clamp(28px, 6vw, 88px);
  }
}

@media (hover: hover) and (min-width: 700px) {
  .page-about .ab-step:hover {
    border-color: var(--orange);
    transform: translate(6px, -6px);
    background: rgba(18, 26, 40, 0.92);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-step,
  .page-about .ab-role,
  .page-about .ab-node__body,
  .page-about .ab-node__marker {
    transition: none;
  }

  .page-about .ab-step:hover,
  .page-about .ab-role:hover,
  .page-about .ab-node:hover .ab-node__body {
    transform: none;
  }
}
<<<END>>>