.page-about {
  --about-rail-w: 150px;
  background: var(--deep);
  color: var(--white);
  overflow-x: clip;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(22px, 5vw, 52px) 0 clamp(26px, 5vw, 58px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -10vw;
  width: min(460px, 72vw);
  height: min(460px, 72vw);
  background: radial-gradient(circle at 35% 35%, rgba(61, 224, 208, 0.2), rgba(7, 23, 38, 0) 62%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(20px, 4vw, 34px);
}

.page-about .about-hero .page-title {
  margin: 0 0 18px;
  max-width: 16ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.25rem, 8vw, 4.6rem);
  line-height: 1.03;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-about .about-hero .page-title::after {
  content: "";
  display: block;
  width: 86px;
  height: 3px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--orange), rgba(255, 107, 44, 0));
}

.page-about .about-hero .lead {
  max-width: 56ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-hero__meta {
  list-style: none;
  margin: 0;
  padding: 16px 0 0;
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.5;
  color: var(--soft);
}

.page-about .about-hero__meta .data-num {
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--cyan);
}

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-about .about-hero__meta {
    justify-self: end;
    text-align: right;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero__axis {
    display: block;
    position: absolute;
    top: 10px;
    right: -6px;
    margin: 0;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    color: rgba(169, 192, 208, 0.55);
  }
}

/* ---------- 主体栅格与侧边索引 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(18px, 3vw, 40px);
  padding-bottom: clamp(46px, 8vw, 96px);
}

.page-about .about-rail ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-rail ol::-webkit-scrollbar {
  display: none;
}

.page-about .about-rail a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--soft);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-rail a:hover,
.page-about .about-rail a:focus-visible {
  color: var(--white);
  border-color: var(--line-strong);
}

.page-about .about-rail a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-about .about-rail__k {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
}

@media (min-width: 980px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-about .about-rail ol {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    border-left: 1px solid var(--line);
  }

  .page-about .about-rail a {
    display: block;
    padding: 9px 0 9px 14px;
    border: 0;
    border-radius: 0;
    white-space: normal;
  }

  .page-about .about-rail a:hover,
  .page-about .about-rail a:focus-visible {
    box-shadow: inset 2px 0 0 var(--cyan);
  }

  .page-about .about-rail__k {
    display: block;
    margin-bottom: 2px;
  }
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  position: relative;
  padding-block: clamp(30px, 5vw, 58px);
  border-top: 1px solid var(--line);
}

.page-about .about-column > .about-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-chapter {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .about-chapter__num {
  display: inline-block;
  padding: 2px 7px;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  color: var(--cyan);
}

.page-about .about-chapter__label {
  color: var(--soft);
}

.page-about .about-section h2 {
  margin: 0 0 16px;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 4.4vw, 2.5rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-section h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .about-section > p,
.page-about .about-text > p {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--soft);
}

.page-about .about-split {
  display: grid;
  gap: clamp(20px, 4vw, 38px);
  align-items: start;
  margin-bottom: 18px;
}

@media (min-width: 820px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .page-about .about-split--rev {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
  }
}

/* ---------- 图片容器 ---------- */
.page-about .media {
  position: relative;
  margin: 0;
}

.page-about .media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-about .about-split .media::after {
  content: "";
  position: absolute;
  right: 14px;
  bottom: 16px;
  width: 26px;
  height: 26px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  pointer-events: none;
}

.page-about .media__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--soft);
}

.page-about .media__coord {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 7px;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

/* ---------- 团队标签页 ---------- */
.page-about .about-tabs {
  margin: 22px 0 24px;
}

.page-about .about-tabs .tabs__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-tabs .tabs__tab {
  flex: 0 0 auto;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--soft);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-tabs .tabs__tab[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--deep);
  font-weight: 700;
}

.page-about .about-tabs .tabs__tab:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-about .about-tabs .tabs__panel {
  padding-top: 18px;
}

.page-about .about-tabs .tabs__panel p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--soft);
}

.page-about [data-tab-panel][hidden] {
  display: none;
}

/* ---------- 生产流程 ---------- */
.page-about .about-flow {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: about-flow;
}

.page-about .about-flow__step {
  position: relative;
  padding: 18px 18px 18px 58px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(140deg, rgba(28, 59, 82, 0.55), rgba(7, 23, 38, 0.15));
}

.page-about .about-flow__step::before {
  counter-increment: about-flow;
  content: "0" counter(about-flow);
  position: absolute;
  left: 18px;
  top: 19px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--soft);
}

@media (min-width: 760px) {
  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-callout {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: clamp(16px, 3vw, 26px);
  border: 1px solid rgba(61, 224, 208, 0.28);
  border-radius: var(--radius);
  background: rgba(14, 42, 66, 0.55);
}

.page-about .about-callout__num {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-callout__unit {
  margin-left: 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--soft);
}

.page-about .about-callout p {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--soft);
}

/* ---------- 浅底历程带 ---------- */
.page-about .about-band {
  padding: clamp(20px, 4vw, 40px);
  border-radius: var(--radius);
  background: var(--mist);
  color: var(--ink);
}

.page-about .about-band h2 {
  color: var(--ink);
}

.page-about .about-band > p {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-band .about-chapter__label {
  color: var(--slate);
}

.page-about .about-band .about-chapter__num {
  color: var(--teal);
  border-color: rgba(11, 127, 122, 0.45);
}

.page-about .about-timeline {
  margin-top: 22px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(220px, 78%);
  gap: 14px;
  overflow-x: auto;
  padding: 6px 2px 16px;
  scroll-snap-type: x mandatory;
  scrollbar-color: rgba(11, 127, 122, 0.5) transparent;
}

.page-about .about-timeline__item {
  position: relative;
  scroll-snap-align: start;
  padding-top: 16px;
  border-top: 2px solid rgba(11, 127, 122, 0.35);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--teal);
}

.page-about .about-timeline__year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1;
  color: var(--teal);
}

.page-about .about-timeline__item h3 {
  margin: 0 0 6px;
  font-size: 0.98rem;
  color: var(--ink);
}

.page-about .about-timeline__item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--slate);
}

.page-about .about-timeline__item .about-timeline__year {
  color: var(--teal);
}

@media (min-width: 760px) {
  .page-about .about-timeline {
    grid-auto-columns: minmax(240px, 40%);
  }
}

@media (min-width: 1100px) {
  .page-about .about-timeline {
    grid-auto-columns: minmax(170px, 1fr);
    overflow-x: auto;
  }
}

/* ---------- 合作数据卡 ---------- */
.page-about .about-metrics {
  margin: 22px 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-about .about-metric {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(28, 59, 82, 0.45);
}

.page-about .about-metric--hot {
  border-color: rgba(255, 107, 44, 0.5);
  background: rgba(255, 107, 44, 0.09);
}

.page-about .about-metric__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 4vw, 1.7rem);
  line-height: 1.1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-metric--hot .about-metric__num {
  color: var(--orange);
}

.page-about .about-metric__label {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--soft);
}

@media (min-width: 780px) {
  .page-about .about-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 看台文化数据 ---------- */
.page-about .about-stats {
  display: grid;
  gap: 12px;
}

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

.page-about .about-stat b {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.2rem, 3.6vw, 1.6rem);
  line-height: 1.2;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stat span {
  font-size: 12px;
  color: var(--soft);
}

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

/* ---------- 结尾指向 ---------- */
.page-about .about-section--next {
  padding-bottom: 0;
}

.page-about .about-next__links {
  margin-top: 22px;
  display: grid;
  gap: 12px;
}

.page-about .about-next__card {
  display: block;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(14, 42, 66, 0.5);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  border-color: var(--line-strong);
  background: rgba(28, 59, 82, 0.6);
}

.page-about .about-next__card:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-about .about-next__k {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-about .about-next__card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--white);
}

.page-about .about-next__card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--soft);
}

@media (min-width: 840px) {
  .page-about .about-next__links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 显现与动效降级 ---------- */
.page-about .is-reveal-pending {
  opacity: 0;
  transform: translateY(14px);
}

.page-about .is-revealed {
  opacity: 1;
  transform: none;
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .is-reveal-pending {
    opacity: 1;
    transform: none;
  }

  .page-about .is-revealed {
    transition: none;
  }

  .page-about .about-timeline {
    scroll-snap-type: none;
  }

  .page-about .about-next__card,
  .page-about .about-rail a,
  .page-about .about-tabs .tabs__tab {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>