.page-about {
  --about-gap: clamp(18px, 2.6vw, 34px);
  --about-air: clamp(44px, 7vw, 88px);
}

.page-about .breadcrumbs {
  padding-top: clamp(14px, 2vw, 22px);
}

.page-about .about-section {
  padding: var(--about-air) 0;
}

.page-about .about-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-about .about-kicker__num {
  color: var(--lime);
  font-weight: 700;
}

.page-about .about-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 5.2vw, 46px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-about .about-h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.2;
  color: var(--mist);
}

.page-about .about-p {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--moss);
}

.page-about .about-p strong {
  color: var(--mist);
  font-weight: 600;
}

.page-about .about-link {
  display: inline-block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 255, 74, 0.35);
  padding-bottom: 3px;
}

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

/* 首屏 */
.page-about .about-hero {
  padding: clamp(18px, 3vw, 34px) 0 clamp(30px, 5vw, 58px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 24px;
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(38px, 9vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--moss);
}

.page-about .about-hero__meta {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__meta li {
  border-left: 2px solid var(--line);
  padding-left: 12px;
}

.page-about .about-meta__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 21px;
  line-height: 1.1;
  color: var(--lime);
}

.page-about .about-meta__txt {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--moss);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, var(--ink-700), var(--ink-900));
  border: 1px solid var(--line);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-hero__plate {
  position: absolute;
  top: -28%;
  right: -14%;
  width: 58%;
  height: 158%;
  transform: rotate(14deg);
  background: linear-gradient(120deg, rgba(184, 255, 74, 0.2), rgba(184, 255, 74, 0));
  pointer-events: none;
}

.page-about .about-hero__caption {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--cream);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* 左右交错 */
.page-about .about-split {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-split__side {
  position: relative;
  padding-right: 26px;
}

.page-about .about-rot {
  display: none;
  position: absolute;
  top: 0;
  right: 0;
  margin: 0;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--line);
}

.page-about .about-figure {
  position: relative;
  margin: 22px 0 0;
  overflow: hidden;
  border-radius: var(--r-md);
  background: var(--ink-800);
  border: 1px solid var(--line);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* 三层数据台 */
.page-about .about-desk {
  margin-top: 26px;
  padding: clamp(16px, 3vw, 30px);
  border-radius: var(--r-lg);
  background: var(--ink-800);
  border: 1px solid var(--line);
}

.page-about .about-desk__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  border: 0;
}

.page-about .about-desk__tab {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--moss);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.2;
  padding: 10px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-desk__tab[aria-selected="true"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink-900);
  font-weight: 600;
}

.page-about .about-desk__tab:hover {
  border-color: var(--lime);
  color: var(--mist);
}

.page-about .about-desk__tab[aria-selected="true"]:hover {
  color: var(--ink-900);
}

.page-about .about-desk__panel {
  display: grid;
  gap: 20px;
  padding: 0;
  border: 0;
}

.page-about .about-band {
  display: block;
  height: 9px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.page-about .about-band--long {
  width: 100%;
  background: linear-gradient(90deg, var(--lime), rgba(184, 255, 74, 0.18));
}

.page-about .about-band--mid {
  width: 66%;
  background: linear-gradient(90deg, var(--amber), rgba(255, 176, 46, 0.18));
}

.page-about .about-band--short {
  width: 40%;
  background: linear-gradient(90deg, var(--red), rgba(255, 77, 94, 0.18));
}

.page-about .about-desk__facts {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-desk__facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--r-sm);
  background: var(--ink-900);
  border-left: 3px solid var(--lime);
}

.page-about .about-desk__facts b {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--lime);
  min-width: 2.2em;
}

.page-about .about-desk__facts span {
  font-size: 13px;
  color: var(--moss);
}

/* 团队角色 */
.page-about .about-roles {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
}

.page-about .about-role {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-800);
  overflow: hidden;
}

.page-about .about-role__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-role__head:hover {
  background: var(--ink-700);
}

.page-about .about-role__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--lime);
}

.page-about .about-role__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-about .about-role__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber);
}

.page-about .about-role__desc {
  margin: 0;
  padding: 0 18px 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--moss);
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

/* 家庭观赛标签 */
.page-about .about-family__tags {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-family__tag {
  padding: 14px 16px;
  border-radius: var(--r-sm);
  background: var(--cream);
  border-left: 5px solid var(--amber);
}

.page-about .about-family__tag b {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: #7a5410;
}

.page-about .about-family__tag span {
  display: block;
  font-size: 14px;
  line-height: 1.65;
  color: #23342a;
}

/* 阶段轨道 */
.page-about .about-track {
  margin-top: 26px;
}

.page-about .about-track__list {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(116px, 1fr);
  gap: 4px;
  overflow-x: auto;
  margin: 0;
  padding: 26px 0 10px;
  border: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-track__node {
  appearance: none;
  display: grid;
  justify-items: start;
  gap: 10px;
  padding: 0 6px 6px;
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  color: var(--moss);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-about .about-track__dot {
  display: block;
  width: 14px;
  height: 14px;
  margin-top: -33px;
  border-radius: 50%;
  border: 2px solid var(--line);
  background: var(--ink-900);
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-track__node[aria-selected="true"] .about-track__dot {
  background: var(--lime);
  border-color: var(--lime);
  transform: scale(1.15);
}

.page-about .about-track__node[aria-selected="true"] .about-track__label {
  color: var(--mist);
  font-weight: 700;
}

.page-about .about-track__node:hover .about-track__dot {
  border-color: var(--lime);
}

.page-about .about-track__panel {
  margin-top: 22px;
  padding: clamp(18px, 3vw, 28px);
  border-radius: var(--r-md);
  background: var(--ink-700);
  border: 1px solid var(--line);
}

.page-about .about-track__year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-about .about-track__panel .about-p {
  margin-bottom: 0;
  color: var(--mist);
}

/* 下一批改进 */
.page-about .about-next {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(20, 51, 38, 0.95), rgba(7, 26, 18, 0.95));
}

.page-about .about-next__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-about .about-next__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--moss);
  flex: 1 1 auto;
}

.page-about .about-next__link {
  align-self: flex-start;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 176, 46, 0.4);
  padding-bottom: 2px;
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  border-bottom-color: var(--amber);
}

/* 收尾 */
.page-about .about-cta {
  display: grid;
  gap: 18px;
  margin-top: clamp(36px, 6vw, 64px);
  padding: clamp(22px, 4vw, 42px);
  border-radius: var(--r-lg);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-top: 3px solid var(--lime);
}

.page-about .about-cta__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.1;
  color: var(--mist);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--moss);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-desk__tab:focus-visible,
.page-about .about-track__node:focus-visible,
.page-about .about-role__head:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

@media (min-width: 560px) {
  .page-about .about-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 780px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: end;
    gap: clamp(28px, 4vw, 52px);
  }

  .page-about .about-hero__lede {
    font-size: 17px;
  }

  .page-about .about-desk__panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 28px;
  }

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

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: center;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 0.44fr) minmax(0, 0.56fr);
    gap: clamp(30px, 5vw, 66px);
    align-items: start;
  }

  .page-about .about-split__side {
    padding-right: 48px;
  }

  .page-about .about-rot {
    display: block;
  }

  .page-about .about-p {
    font-size: 16px;
  }

  .page-about .about-track__list {
    grid-auto-columns: minmax(0, 1fr);
    padding-top: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-desk__tab,
  .page-about .about-track__dot,
  .page-about .about-link,
  .page-about .about-next__link {
    transition: none;
  }
}
<<<END>>>