.page-about {
  --about-rail-w: 148px;
  --about-border: rgba(255, 255, 255, 0.13);
  --about-gold-soft: rgba(255, 215, 0, 0.28);
}

.page-about .breadcrumb {
  margin-bottom: 32px;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-top: 40px;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: end;
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 7.4vw, 92px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: #FFFFFF;
}

.page-about .about-hero__title em {
  display: block;
  font-style: normal;
  color: var(--gold-500);
}

.page-about .about-hero__lead {
  margin: 24px 0 0;
  max-width: 54ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__aside {
  display: flex;
  flex-direction: column;
  gap: 20px;
  border-top: 1px solid var(--about-border);
  padding-top: 24px;
}

.page-about .about-hero__aside .vert-note {
  display: none;
}

.page-about .about-hero__figures {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.page-about .about-hero__figures li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 12px;
  border-left: 1px solid var(--about-gold-soft);
}

.page-about .about-hero__figures .num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.15;
  color: var(--gold-500);
}

.page-about .about-hero__fig-label {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-about .about-hero__banner {
  position: relative;
  margin-top: 56px;
}

.page-about .about-hero__banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1600 / 700;
  object-fit: cover;
  border-radius: 3px;
}

.page-about .about-hero__banner::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 96px;
  height: 3px;
  background: var(--gold-500);
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: 56px;
  }

  .page-about .about-hero__lead {
    font-size: 18px;
  }

  .page-about .about-hero__aside {
    border-top: 0;
    border-left: 1px solid var(--about-border);
    padding: 0 0 0 32px;
  }

  .page-about .about-hero__aside .vert-note {
    display: block;
    align-self: flex-end;
    height: 168px;
    margin: 0 0 4px;
    color: var(--gold-500);
  }

  .page-about .about-hero__figures {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .page-about .about-hero__figures .num {
    font-size: 30px;
  }
}

/* ---------- 章节骨架 ---------- */

.page-about .about-chapter {
  padding: 56px 0;
}

.page-about .about-chapter--tint {
  background: var(--ink-800);
}

.page-about .section-head {
  margin-bottom: 32px;
}

.page-about .section-head__title {
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: #FFFFFF;
}

@media (min-width: 900px) {
  .page-about .about-chapter {
    padding: 96px 0;
  }

  .page-about .section-head {
    margin-bottom: 56px;
  }
}

/* ---------- 01 起点 ---------- */

.page-about .about-origin__body p {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.82;
  color: var(--text-dim);
}

.page-about .about-origin__body p:first-child {
  font-size: 18px;
  line-height: 1.75;
  color: #F7F8FB;
}

.page-about .about-origin__aside {
  margin-top: 8px;
}

.page-about .about-origin__quote {
  margin: 0;
  padding-top: 24px;
  border-top: 1px solid var(--about-gold-soft);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.78;
  color: var(--gold-300);
}

/* ---------- 02 流程 ---------- */

.page-about .about-flow__figure {
  margin: 0 0 32px;
}

.page-about .about-flow__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 3px;
}

.page-about .about-flow__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-500);
}

.page-about .about-steps {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-about .about-step {
  position: relative;
  padding: 22px 20px 24px 30px;
  border: 1px solid var(--about-border);
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.045);
}

.page-about .about-step::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 26px;
  width: 7px;
  height: 7px;
  background: var(--gold-500);
  transform: rotate(45deg);
}

.page-about .about-step__tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-500);
}

.page-about .about-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  color: #FFFFFF;
}

.page-about .about-step p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--text-dim);
}

/* ---------- 03 团队 ---------- */

.page-about .about-hubs__grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-about .about-hub {
  padding: 24px 22px;
  background: var(--ink-800);
  border: 1px solid var(--about-border);
  border-radius: 2px;
}

.page-about .about-hub header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.page-about .about-hub__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green-500);
  box-shadow: 0 0 0 4px rgba(46, 204, 113, 0.16);
}

.page-about .about-hub__dot--orange {
  background: var(--orange-500);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.18);
}

.page-about .about-hub h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: #FFFFFF;
}

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

.page-about .about-hub li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-about .about-hub li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 7px;
  height: 1px;
  background: var(--gold-500);
}

.page-about .about-team__figure {
  margin: 32px 0 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 800;
  object-fit: cover;
  border-radius: 3px;
}

.page-about .about-team__figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

@media (min-width: 900px) {
  .page-about .about-hubs__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-hub--wide {
    grid-column: 1 / -1;
  }

  .page-about .about-team__figure {
    margin: 24px 0 0;
  }
}

/* ---------- 04 时间线 ---------- */

.page-about .about-timeline {
  display: grid;
  gap: 32px;
}

.page-about .about-timeline__rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
}

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

.page-about .about-timeline__rail a {
  display: inline-block;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  border: 1px solid var(--about-border);
  border-radius: 2px;
  text-decoration: none;
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}

.page-about .about-timeline__rail a:hover,
.page-about .about-timeline__rail a:focus-visible {
  color: var(--gold-500);
  border-color: var(--gold-500);
}

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

.page-about .about-timeline__item {
  position: relative;
  margin-left: 8px;
  padding: 0 0 40px 30px;
  border-left: 1px solid var(--line-strong);
  scroll-margin-top: 112px;
  transition: border-color var(--dur-2) var(--ease);
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--line-strong);
  transform: rotate(45deg);
  transition: background var(--dur-2) var(--ease), transform var(--dur-2) var(--ease);
}

.page-about .about-timeline__item:hover {
  border-left-color: var(--gold-500);
}

.page-about .about-timeline__item:hover::before {
  background: var(--gold-500);
  transform: rotate(45deg) scale(1.4);
}

.page-about .about-timeline__year {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold-500);
}

.page-about .about-timeline__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  color: #FFFFFF;
}

.page-about .about-timeline__item p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

@media (min-width: 900px) {
  .page-about .about-timeline {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .about-timeline__rail {
    position: sticky;
    top: 112px;
    align-self: start;
  }

  .page-about .about-timeline__rail ul {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 6px;
  }

  .page-about .about-timeline__item {
    padding-bottom: 48px;
  }
}

/* ---------- 05 合作 ---------- */

.page-about .about-partners {
  display: grid;
  gap: 20px;
}

.page-about .about-partner {
  position: relative;
  overflow: hidden;
  padding: 32px 26px 28px;
  background: var(--ink-800);
  border: 1px solid var(--about-border);
  border-radius: 2px;
}

.page-about .about-partner::after {
  content: "";
  position: absolute;
  right: -46px;
  top: -46px;
  width: 128px;
  height: 128px;
  transform: rotate(45deg);
  border: 1px solid var(--about-gold-soft);
  pointer-events: none;
}

.page-about .about-partner--orange::after {
  border-color: rgba(255, 107, 53, 0.32);
}

.page-about .about-partner__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 42px;
  font-weight: 500;
  line-height: 1;
  color: var(--gold-500);
}

.page-about .about-partner--orange .about-partner__num {
  color: var(--orange-500);
}

.page-about .about-partner h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  color: #FFFFFF;
}

.page-about .about-partner p {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

@media (min-width: 800px) {
  .page-about .about-partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .about-partner {
    padding: 40px 36px 34px;
  }

  .page-about .about-partner__num {
    font-size: 52px;
  }
}

/* ---------- 06 规矩与收尾 ---------- */

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

.page-about .about-rules li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 18px;
  padding: 24px 0;
  border-top: 1px solid var(--about-border);
}

.page-about .about-rules li:last-child {
  border-bottom: 1px solid var(--about-border);
}

.page-about .about-rules__num {
  grid-row: span 2;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold-500);
}

.page-about .about-rules h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: #FFFFFF;
}

.page-about .about-rules p {
  margin: 4px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-about .about-cta {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 48px;
  padding: 28px 24px;
  border: 1px solid var(--about-gold-soft);
  border-radius: 2px;
  background: linear-gradient(120deg, rgba(255, 215, 0, 0.12), rgba(255, 107, 53, 0.07));
}

.page-about .about-cta p {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.6;
  color: #FFFFFF;
}

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

@media (min-width: 800px) {
  .page-about .about-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    margin-top: 56px;
    padding: 34px 40px;
  }

  .page-about .about-cta p {
    max-width: 44ch;
    font-size: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__item,
  .page-about .about-timeline__item::before,
  .page-about .about-timeline__rail a {
    transition: none;
  }

  .page-about .about-timeline__item:hover::before {
    transform: rotate(45deg);
  }
}
<<<END>>>