.page-about {
  --about-rail-w: 212px;
  --about-accent: var(--yx-signal);
  --about-indigo: #6C5BC4;
  --about-wine: #BE4A72;
  background: var(--yx-navy);
  color: var(--yx-ice);
  overflow-x: hidden;
}

/* ---------- 刊头区 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 6vw, 76px) 0 clamp(40px, 6vw, 84px);
  border-bottom: 1px solid var(--yx-line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(43, 227, 167, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(43, 227, 167, .07) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(130% 90% at 82% 0%, #000 0%, transparent 70%);
  mask-image: radial-gradient(130% 90% at 82% 0%, #000 0%, transparent 70%);
  pointer-events: none;
}

.page-about .about-hero__mark {
  position: absolute;
  top: clamp(18px, 4vw, 54px);
  right: clamp(-70px, -4vw, -20px);
  width: clamp(190px, 30vw, 380px);
  height: auto;
  color: var(--yx-signal);
  opacity: .22;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--yx-mist);
}

.page-about .about-crumb a {
  color: var(--yx-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--yx-ease), border-color .25s var(--yx-ease);
}

.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--yx-signal);
  border-bottom-color: var(--yx-signal);
}

.page-about .about-crumb__sep {
  color: var(--yx-line);
}

.page-about .about-hero__eyebrow {
  margin-top: clamp(26px, 4vw, 46px);
  color: var(--yx-signal);
}

.page-about .about-hero__title {
  margin: clamp(14px, 2vw, 22px) 0 0;
  font-family: var(--yx-font-display);
  font-weight: 300;
  font-size: clamp(38px, 7.6vw, 100px);
  line-height: 1;
  letter-spacing: .01em;
  color: var(--yx-ice);
}

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

.page-about .about-hero__line--signal {
  color: var(--yx-signal);
}

.page-about .about-hero__lead {
  max-width: 62ch;
  margin: clamp(20px, 3vw, 32px) 0 0;
  font-size: clamp(16px, 1.25vw, 18px);
  line-height: 1.9;
  color: var(--yx-mist);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 62px);
  list-style: none;
  margin: clamp(30px, 4.5vw, 54px) 0 0;
  padding: clamp(22px, 3vw, 30px) 0 0;
  border-top: 1px solid var(--yx-line);
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-about .about-hero__num {
  font-family: var(--yx-font-numeric);
  font-size: clamp(30px, 4.2vw, 54px);
  line-height: 1;
  color: var(--yx-ice);
}

.page-about .about-hero__num em {
  font-style: normal;
  font-size: .42em;
  color: var(--yx-signal);
  margin-left: 2px;
}

.page-about .about-hero__label {
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--yx-mist);
}

/* ---------- 双栏轨道 ---------- */

.page-about .about-track {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  padding-top: clamp(38px, 5.5vw, 76px);
  padding-bottom: clamp(50px, 8vw, 110px);
}

.page-about .about-rail {
  align-self: start;
}

.page-about .about-rail__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--yx-mist);
}

.page-about .about-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-rail__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 7px 10px;
  border-radius: 4px;
  border-left: 2px solid transparent;
  font-size: 14px;
  color: var(--yx-mist);
  text-decoration: none;
  transition: color .25s var(--yx-ease), background .25s var(--yx-ease), border-color .25s var(--yx-ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--yx-ice);
  background: var(--yx-glass);
  border-left-color: var(--yx-signal);
  outline: none;
}

.page-about .about-rail__no {
  font-family: var(--yx-font-numeric);
  font-size: 12px;
  color: var(--yx-signal);
}

.page-about .about-body {
  display: flex;
  flex-direction: column;
  gap: clamp(46px, 6.5vw, 92px);
  min-width: 0;
}

/* ---------- 章节画布 ---------- */

.page-about .about-chapter {
  position: relative;
  padding-top: clamp(22px, 2.8vw, 36px);
  border-top: 1px solid var(--yx-line);
}

.page-about .about-chapter::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: clamp(46px, 7vw, 92px);
  height: 3px;
  background: var(--about-accent);
}

.page-about .about-chapter--signal { --about-accent: var(--yx-signal); }
.page-about .about-chapter--indigo { --about-accent: var(--about-indigo); }
.page-about .about-chapter--wine { --about-accent: var(--about-wine); }
.page-about .about-chapter--amber { --about-accent: var(--yx-amber); }

.page-about .about-chapter__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: clamp(12px, 2vw, 24px);
}

.page-about .about-chapter__num {
  font-family: var(--yx-font-numeric);
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--about-accent);
}

.page-about .about-chapter__title {
  margin: 0;
  font-family: var(--yx-font-display);
  font-weight: 300;
  font-size: clamp(26px, 3.4vw, 46px);
  line-height: 1.08;
  color: var(--yx-ice);
}

.page-about .about-chapter__content {
  max-width: 68ch;
  margin-top: clamp(18px, 2.4vw, 30px);
  font-size: 17px;
  line-height: 1.85;
  color: var(--yx-mist);
}

.page-about .about-chapter__content p {
  margin: 0;
}

.page-about .about-chapter__content p + p {
  margin-top: 18px;
}

.page-about .about-chapter__content--after {
  margin-top: clamp(22px, 3vw, 34px);
}

/* ---------- 六栏目清单 ---------- */

.page-about .about-columns {
  display: grid;
  gap: 1px;
  grid-template-columns: 1fr;
  list-style: none;
  margin: clamp(24px, 3vw, 38px) 0 0;
  padding: 0;
  background: var(--yx-line);
  border-top: 1px solid var(--yx-line);
  border-bottom: 1px solid var(--yx-line);
}

.page-about .about-columns li {
  background: var(--yx-navy);
  padding: 20px 18px 22px;
  min-width: 0;
}

.page-about .about-columns__no {
  font-family: var(--yx-font-numeric);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--yx-signal);
}

.page-about .about-columns h3 {
  margin: 8px 0 6px;
  font-size: 17px;
  font-weight: 500;
  color: var(--yx-ice);
}

.page-about .about-columns p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--yx-mist);
}

/* ---------- 版本轨道 ---------- */

.page-about .about-ver {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
}

.page-about .about-ver__item {
  position: relative;
  padding: 18px 16px;
  border-radius: 6px;
  background: rgba(255, 255, 255, .035);
  transition: background .3s var(--yx-ease), transform .3s var(--yx-ease);
}

.page-about .about-ver__item:hover,
.page-about .about-ver__item:focus-visible {
  background: var(--yx-glass-hi);
  transform: translateY(-2px);
  outline: none;
}

.page-about .about-ver__item:focus-visible {
  box-shadow: 0 0 0 2px var(--yx-signal) inset;
}

.page-about .about-ver__no {
  display: block;
  font-family: var(--yx-font-numeric);
  font-size: 22px;
  letter-spacing: .04em;
  line-height: 1.1;
  color: var(--yx-ice);
}

.page-about .about-ver__name {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  letter-spacing: .1em;
  color: var(--yx-amber);
}

.page-about .about-ver__desc {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--yx-mist);
}

/* ---------- 配图 ---------- */

.page-about .about-figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

.page-about .about-figure .yx-media {
  overflow: hidden;
  border-radius: 8px;
}

.page-about .about-figure__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.42) contrast(1.06);
}

.page-about .about-figure__cap {
  margin-top: 12px;
  padding-left: 12px;
  border-left: 2px solid var(--yx-line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--yx-mist);
}

/* ---------- 团队数字 ---------- */

.page-about .about-team {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
}

.page-about .about-team li {
  padding-top: 14px;
  border-top: 1px solid var(--yx-line);
  min-width: 0;
}

.page-about .about-team__num {
  display: block;
  font-family: var(--yx-font-numeric);
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1;
  color: var(--yx-amber);
}

.page-about .about-team__role {
  display: block;
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--yx-mist);
}

/* ---------- 行业记录 ---------- */

.page-about .about-honor {
  display: grid;
  gap: 1px;
  grid-template-columns: 1fr;
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  background: var(--yx-line);
  border-top: 1px solid var(--yx-line);
  border-bottom: 1px solid var(--yx-line);
}

.page-about .about-honor li {
  display: flex;
  align-items: baseline;
  gap: clamp(14px, 2.5vw, 30px);
  padding: 20px 18px;
  background: var(--yx-navy);
}

.page-about .about-honor__year {
  font-family: var(--yx-font-numeric);
  font-size: 20px;
  line-height: 1;
  color: var(--yx-signal);
  flex: 0 0 auto;
}

.page-about .about-honor__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--yx-mist);
}

/* ---------- 收束区 ---------- */

.page-about .about-next {
  border-top: 1px solid var(--yx-line);
  background: var(--yx-teal);
  padding: clamp(40px, 6vw, 82px) 0 clamp(46px, 6vw, 92px);
}

.page-about .about-next__head {
  max-width: 60ch;
}

.page-about .about-next__title {
  margin: 0;
  font-family: var(--yx-font-display);
  font-weight: 300;
  font-size: clamp(26px, 3.6vw, 48px);
  line-height: 1.06;
  color: var(--yx-ice);
}

.page-about .about-next__lead {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--yx-mist);
}

.page-about .about-next__list {
  display: grid;
  gap: 1px;
  grid-template-columns: 1fr;
  list-style: none;
  margin: clamp(26px, 3.5vw, 44px) 0 0;
  padding: 0;
  background: rgba(255, 255, 255, .12);
}

.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
  padding: 22px 20px 24px;
  background: var(--yx-teal);
  text-decoration: none;
  transition: background .28s var(--yx-ease), transform .28s var(--yx-ease);
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  background: var(--yx-glass-hi);
  transform: translateY(-2px);
  outline: none;
}

.page-about .about-next__card:focus-visible {
  box-shadow: 0 0 0 2px var(--yx-signal) inset;
}

.page-about .about-next__k {
  font-family: var(--yx-font-display);
  font-size: 22px;
  color: var(--yx-signal);
}

.page-about .about-next__d {
  font-size: 14px;
  line-height: 1.8;
  color: var(--yx-mist);
}

/* ---------- 打字显现 ---------- */

.page-about .yx-js .about-hero [data-reveal],
.yx-js .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}

.yx-js .page-about [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
  transition: opacity .6s var(--yx-ease), transform .6s var(--yx-ease);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-about .about-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .about-honor li {
    padding: 22px 24px;
  }
}

@media (min-width: 880px) {
  .page-about .about-ver {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid var(--yx-line);
  }

  .page-about .about-ver__item {
    padding: 24px 18px 26px 0;
    background: none;
    border-radius: 0;
  }

  .page-about .about-ver__item::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    width: 100%;
    height: 3px;
    background: transparent;
    transition: background .3s var(--yx-ease);
  }

  .page-about .about-ver__item:hover,
  .page-about .about-ver__item:focus-visible {
    background: none;
    transform: none;
  }

  .page-about .about-ver__item:hover::before,
  .page-about .about-ver__item:focus-visible::before {
    background: var(--yx-amber);
  }

  .page-about .about-ver__item:focus-visible {
    box-shadow: none;
  }
}

@media (min-width: 1024px) {
  .page-about .about-track {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 92px);
  }

  .page-about .about-rail {
    position: sticky;
    top: 118px;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

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

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

@media (max-width: 420px) {
  .page-about .about-hero__facts {
    gap: 18px 26px;
  }

  .page-about .about-hero__num {
    font-size: 28px;
  }

  .page-about .about-team {
    gap: 10px;
  }

  .page-about .about-team__role {
    font-size: 11.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal],
  .yx-js .page-about [data-reveal],
  .yx-js .page-about [data-reveal].is-revealed {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .about-ver__item,
  .page-about .about-next__card,
  .page-about .about-rail__link {
    transition: none;
  }
}