.page-about {
  --about-line: rgba(234, 242, 248, 0.14);
  --about-line-soft: rgba(234, 242, 248, 0.07);
  --about-text-soft: #b4c6d4;
  background: var(--yx-deep);
  color: var(--yx-mist);
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about .about-crumb {
  padding: 20px 0 4px;
}

.page-about .about-crumb .yx-breadcrumb {
  font-size: 13px;
  color: var(--yx-graphite);
}

.page-about .about-crumb a {
  color: var(--yx-graphite);
  text-decoration: none;
}

.page-about .about-crumb a:hover {
  color: var(--yx-cyan);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 12px 0 48px;
}

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

.page-about .about-hero__lead .yx-eyebrow {
  color: var(--yx-cyan);
  letter-spacing: 0.14em;
}

.page-about .about-hero__lead .yx-h1 {
  margin: 12px 0 18px;
  font-family: var(--yx-font-head);
  letter-spacing: -0.02em;
  line-height: 1.22;
}

.page-about .about-hero__lead .yx-lede {
  font-family: var(--yx-font-body);
  color: var(--about-text-soft);
  line-height: 1.85;
  max-width: 40em;
}

.page-about .about-hero__lead .yx-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--yx-radius-lg);
  overflow: hidden;
}

.page-about .about-stat {
  background: var(--yx-rail);
  padding: 20px 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-stat__num {
  font-family: var(--yx-font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(26px, 5vw, 34px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--yx-mist);
}

.page-about .about-stat__num em {
  font-style: normal;
  font-size: 0.48em;
  color: var(--yx-cyan);
  margin-left: 3px;
}

.page-about .about-stat__label {
  font-family: var(--yx-font-ui);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--yx-graphite);
}

/* ---------- 通用章节头 ---------- */
.page-about .about-chapter,
.page-about .about-team,
.page-about .about-rules,
.page-about .about-trust,
.page-about .about-cadence {
  padding: 52px 0;
}

.page-about .about-chapter__head {
  max-width: 780px;
  margin-bottom: 30px;
}

.page-about .about-chapter__head .yx-eyebrow {
  color: var(--yx-coral);
  letter-spacing: 0.14em;
  font-family: var(--yx-font-mono);
  font-size: 12.5px;
}

.page-about .about-chapter__head .yx-h2 {
  margin: 10px 0 14px;
  font-family: var(--yx-font-head);
  letter-spacing: -0.02em;
  line-height: 1.28;
}

.page-about .about-chapter__intro {
  font-family: var(--yx-font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-text-soft);
  margin: 0;
}

/* ---------- 历程 ---------- */
.page-about .about-banner {
  margin: 0 0 38px;
}

.page-about .about-banner img {
  width: 100%;
  border-radius: var(--yx-radius-lg);
  border: 1px solid var(--about-line);
  background: var(--yx-rail);
  object-fit: cover;
}

.page-about .about-banner .yx-figure__caption {
  margin-top: 10px;
  font-family: var(--yx-font-mono);
  font-size: 12.5px;
  color: var(--yx-graphite);
}

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

.page-about .about-years {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

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

.page-about .about-year {
  flex: 0 0 auto;
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--yx-pill);
  border: 1px solid var(--about-line);
  font-family: var(--yx-font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--yx-graphite);
  text-decoration: none;
  transition: color 200ms var(--yx-ease), background-color 200ms var(--yx-ease),
    border-color 200ms var(--yx-ease);
}

.page-about .about-year:hover,
.page-about .about-year:focus-visible {
  color: var(--yx-deep);
  background: var(--yx-cyan);
  border-color: var(--yx-cyan);
}

.page-about .about-miles {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: mile;
}

.page-about .about-mile {
  counter-increment: mile;
  position: relative;
  padding: 24px 0 24px 0;
  border-top: 1px solid var(--about-line-soft);
  transition: background-color 260ms var(--yx-ease);
}

.page-about .about-mile:last-child {
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-mile::before {
  content: counter(mile, decimal-leading-zero);
  display: block;
  margin-bottom: 8px;
  font-family: var(--yx-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--yx-coral);
}

.page-about .about-mile .yx-h3 {
  margin: 0 0 10px;
  font-family: var(--yx-font-head);
  font-size: 19px;
  line-height: 1.45;
  color: var(--yx-mist);
}

.page-about .about-mile__text {
  margin: 0;
  font-family: var(--yx-font-body);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

.page-about .about-mile:target {
  background: linear-gradient(90deg, rgba(47, 230, 208, 0.1), transparent 72%);
  box-shadow: inset 3px 0 0 var(--yx-cyan);
  padding-left: 16px;
  border-radius: var(--yx-radius-sm);
}

/* ---------- 团队 ---------- */
.page-about .about-band {
  margin: 8px 0 34px;
  padding: 28px 0;
  background: linear-gradient(180deg, rgba(18, 41, 63, 0.92), rgba(10, 27, 46, 0.35));
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-band__label {
  font-family: var(--yx-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--yx-graphite);
  margin: 0 0 14px;
}

.page-about .about-band__bar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  border-radius: var(--yx-radius);
  overflow: hidden;
}

.page-about .about-band__seg {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--yx-radius-sm);
  color: var(--yx-deep);
}

.page-about .about-band__seg--a {
  background: linear-gradient(120deg, var(--yx-cyan), var(--yx-blue));
}

.page-about .about-band__seg--b {
  background: linear-gradient(120deg, var(--yx-blue), var(--yx-violet));
  color: var(--yx-mist);
}

.page-about .about-band__seg--c {
  background: linear-gradient(120deg, var(--yx-violet), var(--yx-coral));
  color: var(--yx-mist);
}

.page-about .about-band__num {
  font-family: var(--yx-font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.02em;
}

.page-about .about-band__name {
  font-family: var(--yx-font-ui);
  font-size: 13.5px;
  letter-spacing: 0.04em;
}

.page-about .about-band__figure {
  margin: 22px 0 0;
}

.page-about .about-band__figure img {
  width: 100%;
  border-radius: var(--yx-radius);
  border: 1px solid var(--about-line);
  object-fit: cover;
  background: var(--yx-rail);
}

.page-about .about-band__figure .yx-figure__caption {
  margin-top: 10px;
  font-family: var(--yx-font-mono);
  font-size: 12px;
  color: var(--yx-graphite);
}

.page-about .about-team__cards {
  display: grid;
  gap: 16px;
}

.page-about .about-team__card {
  background: var(--yx-rail);
  border: 1px solid var(--about-line);
  border-radius: var(--yx-radius);
  padding: 22px 20px;
}

.page-about .about-team__card .yx-card__label {
  display: inline-block;
  margin: 0 0 12px;
  font-family: var(--yx-font-ui);
  font-size: 12.5px;
  letter-spacing: 0.04em;
}

.page-about .about-team__card .yx-card__title {
  margin: 0 0 10px;
  font-family: var(--yx-font-head);
  font-size: 18px;
  line-height: 1.45;
  color: var(--yx-mist);
}

.page-about .about-team__card .yx-card__body {
  margin: 0;
  font-family: var(--yx-font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-text-soft);
}

/* ---------- 准则 ---------- */
.page-about .about-accordion {
  display: grid;
  gap: 12px;
}

.page-about .about-accordion .yx-accordion__item {
  background: var(--yx-rail);
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--yx-cyan);
  border-radius: var(--yx-radius);
  overflow: hidden;
}

.page-about .about-accordion .yx-accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--yx-mist);
  font-family: var(--yx-font-head);
  font-size: 17px;
  line-height: 1.5;
}

.page-about .about-rule__no {
  flex: 0 0 auto;
  font-family: var(--yx-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--yx-coral);
}

.page-about .about-rule__name {
  flex: 1 1 auto;
}

.page-about .about-accordion .yx-accordion__body {
  padding: 0 20px 20px;
}

.page-about .about-accordion .yx-accordion__body p {
  margin: 0 0 12px;
  font-family: var(--yx-font-body);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

.page-about .about-rule__measure {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding-top: 12px;
  border-top: 1px dashed var(--about-line);
  margin-bottom: 0 !important;
}

.page-about .about-rule__measure .yx-tag {
  font-family: var(--yx-font-ui);
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* ---------- 资质与伙伴 ---------- */
.page-about .about-creds {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--yx-radius);
  overflow: hidden;
}

.page-about .about-creds li {
  background: var(--yx-deep);
  padding: 20px;
}

.page-about .about-creds .yx-mono {
  font-family: var(--yx-font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--yx-cyan);
  margin: 0 0 8px;
}

.page-about .about-creds__text {
  margin: 0;
  font-family: var(--yx-font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-text-soft);
}

.page-about .about-tabs .yx-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.page-about .about-tabs .yx-tabs__tab {
  padding: 9px 18px;
  border-radius: var(--yx-pill);
  border: 1px solid var(--about-line);
  background: transparent;
  color: var(--yx-graphite);
  font-family: var(--yx-font-ui);
  font-size: 13.5px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color 200ms var(--yx-ease), background-color 200ms var(--yx-ease),
    border-color 200ms var(--yx-ease);
}

.page-about .about-tabs .yx-tabs__tab:hover,
.page-about .about-tabs .yx-tabs__tab:focus-visible {
  color: var(--yx-mist);
  border-color: var(--yx-cyan);
}

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

.page-about .about-tabs .yx-tabs__panel {
  background: var(--yx-rail);
  border: 1px solid var(--about-line);
  border-radius: var(--yx-radius);
  padding: 22px 20px;
}

.page-about .about-tabs .yx-tabs__panel .yx-h3 {
  margin: 0 0 10px;
  font-family: var(--yx-font-head);
  font-size: 17px;
  line-height: 1.5;
  color: var(--yx-mist);
}

.page-about .about-tabs .yx-tabs__panel p {
  margin: 0;
  font-family: var(--yx-font-body);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

/* ---------- 节奏 ---------- */
.page-about .about-cadence__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-about .about-cadence__item {
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--yx-blue);
}

.page-about .about-cadence__tag {
  margin: 0 0 8px;
  font-family: var(--yx-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--yx-violet);
}

.page-about .about-cadence__item .yx-h3 {
  margin: 0 0 8px;
  font-family: var(--yx-font-head);
  font-size: 18px;
  line-height: 1.45;
  color: var(--yx-mist);
}

.page-about .about-cadence__item p {
  margin: 0;
  font-family: var(--yx-font-body);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

.page-about .about-cadence__link {
  margin: 26px 0 0;
}

/* ---------- 收尾 ---------- */
.page-about .about-outro {
  padding: 52px 0 64px;
  border-top: 1px solid var(--about-line);
  background: linear-gradient(180deg, rgba(18, 41, 63, 0.55), var(--yx-deep) 70%);
}

.page-about .about-outro__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-outro__text .yx-eyebrow {
  color: var(--yx-cyan);
  letter-spacing: 0.12em;
  font-family: var(--yx-font-mono);
  font-size: 12.5px;
  margin: 0;
}

.page-about .about-outro__text .yx-h2 {
  margin: 10px 0 14px;
  font-family: var(--yx-font-head);
  letter-spacing: -0.02em;
}

.page-about .about-outro__text > p {
  font-family: var(--yx-font-body);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--about-text-soft);
  margin: 0 0 16px;
  max-width: 40em;
}

.page-about .about-outro__contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-about .about-outro__label {
  font-family: var(--yx-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--yx-graphite);
}

.page-about .about-outro__contact .yx-copy {
  border: 1px solid var(--about-line);
  border-radius: var(--yx-pill);
  background: var(--yx-rail);
  color: var(--yx-mist);
  padding: 8px 16px;
  font-family: var(--yx-font-mono);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 200ms var(--yx-ease), color 200ms var(--yx-ease);
}

.page-about .about-outro__contact .yx-copy:hover,
.page-about .about-outro__contact .yx-copy:focus-visible {
  border-color: var(--yx-cyan);
  color: var(--yx-cyan);
}

.page-about .about-outro__meta {
  font-family: var(--yx-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--yx-graphite);
  line-height: 1.9;
}

.page-about .about-outro__text .yx-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-about .about-outro__figure {
  margin: 0;
}

.page-about .about-outro__figure img {
  width: 100%;
  border-radius: var(--yx-radius-lg);
  border: 1px solid var(--about-line);
  object-fit: cover;
  background: var(--yx-rail);
}

.page-about .about-outro__figure .yx-figure__caption {
  margin-top: 10px;
  font-family: var(--yx-font-mono);
  font-size: 12px;
  color: var(--yx-graphite);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-about .about-band__bar {
    display: flex;
    gap: 6px;
    min-height: 96px;
  }

  .page-about .about-band__seg {
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-start;
    gap: 4px;
    border-radius: 0;
  }

  .page-about .about-band__seg--a {
    flex: 61 1 0;
  }

  .page-about .about-band__seg--b {
    flex: 22 1 0;
  }

  .page-about .about-band__seg--c {
    flex: 17 1 0;
  }

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

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

  .page-about .about-cadence__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 28px 0 64px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-hero__facts {
    margin-top: 48px;
  }

  .page-about .about-chapter,
  .page-about .about-team,
  .page-about .about-rules,
  .page-about .about-trust,
  .page-about .about-cadence {
    padding: 72px 0;
  }

  .page-about .about-track {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 52px;
  }

  .page-about .about-years {
    position: sticky;
    top: calc(var(--yx-bar-h) + 32px);
    align-self: start;
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-year {
    display: block;
    width: 100%;
    text-align: center;
    margin-bottom: 8px;
    padding: 10px 12px;
  }

  .page-about .about-band {
    padding: 44px 0;
  }

  .page-about .about-band__figure {
    margin-top: 30px;
  }

  .page-about .about-outro__grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .about-outro {
    padding: 72px 0 84px;
  }
}
<<<END>>>