.page-about {
  --about-pad: clamp(56px, 9vw, 108px);
  --about-line: rgba(168, 243, 236, .22);
  --about-ink-soft: rgba(4, 16, 31, .62);
  display: block;
}

/* 面包屑 */
.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: 20px;
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--color-dust);
}

.page-about .breadcrumbs a {
  color: var(--color-dust);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--color-neon);
  border-bottom-color: var(--color-neon);
}

/* ===== 首屏 ===== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  margin-top: 22px;
  padding: clamp(46px, 8vw, 92px) 0 var(--about-pad);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(37, 225, 208, .18), transparent 58%),
    linear-gradient(180deg, var(--color-midnight), var(--color-stand));
  color: var(--color-paper);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -14%;
  width: 74%;
  height: 120%;
  background: linear-gradient(150deg, rgba(140, 123, 255, .22), rgba(37, 225, 208, .1) 52%, transparent 74%);
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 0 62%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-neon), transparent);
  opacity: .55;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(30px, 5vw, 58px);
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-size: clamp(36px, 8vw, 74px);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--color-paper);
}

.page-about .about-hero__title-accent {
  display: block;
  position: relative;
  color: var(--color-neon);
}

.page-about .about-hero__title-accent::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -.1em;
  width: 58%;
  max-width: 320px;
  height: 6px;
  background: var(--color-sunset);
  transform: skewX(-24deg);
  opacity: .88;
}

.page-about .about-hero__lead {
  margin: 28px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 2.4vw, 17px);
  line-height: 1.85;
  color: var(--color-mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-about .about-hero__panel {
  padding: 24px 22px;
  background: rgba(7, 15, 30, .68);
  border: 1px solid var(--about-line);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(168, 243, 236, .14);
}

.page-about .about-hero__facts li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-hero__facts .num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 28px);
  line-height: 1.1;
  color: var(--color-neon);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__fact-label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-dust);
  text-align: right;
}

/* ===== 发展历程 ===== */
.page-about .about-era {
  padding: var(--about-pad) 0;
  background: var(--color-stand);
  color: var(--color-paper);
}

.page-about .about-era .headline,
.page-about .about-team .headline,
.page-about .about-service .headline,
.page-about .about-rebuild .headline {
  color: var(--color-paper);
}

.page-about .about-era .body-text,
.page-about .about-team .body-text,
.page-about .about-service .body-text {
  color: var(--color-mist);
}

.page-about .about-era__ruler {
  height: 34px;
  margin: 34px 0 28px;
  border-bottom: 1px solid rgba(37, 225, 208, .45);
  background-image: repeating-linear-gradient(90deg, rgba(168, 243, 236, .35) 0 1px, transparent 1px 40px);
  background-repeat: repeat-x;
}

.page-about .about-era__figure {
  margin: 0 0 34px;
}

.page-about .about-era__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--about-line);
}

.page-about .about-era__figure .media-figure__cap {
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--color-dust);
}

.page-about .about-era__track {
  list-style: none;
  margin: 0;
  padding: 0 0 18px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(228px, 266px);
  gap: 18px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
}

.page-about .about-era__node {
  scroll-snap-align: start;
  padding: 20px 18px 22px;
  border-top: 2px solid var(--color-neon);
  background: linear-gradient(180deg, rgba(37, 225, 208, .1), rgba(37, 225, 208, 0) 62%);
}

.page-about .about-era__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--color-neon);
  border: 1px solid rgba(37, 225, 208, .45);
  padding: 4px 10px;
}

.page-about .about-era__node-title {
  margin: 14px 0 8px;
  font-size: 19px;
  line-height: 1.4;
  color: var(--color-paper);
}

.page-about .about-era__node .body-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
}

.page-about .about-era__stats {
  margin-top: 36px;
  gap: 18px;
}

.page-about .about-era__stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-era__stat .num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4.6vw, 34px);
  line-height: 1.1;
  color: var(--color-neon);
  font-variant-numeric: tabular-nums;
}

.page-about .about-era__stat span:last-child {
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--color-dust);
}

/* ===== 分类重排 ===== */
.page-about .about-rebuild {
  padding: var(--about-pad) 0;
  background: var(--color-midnight);
  color: var(--color-paper);
}

.page-about .about-rebuild__grid {
  margin-top: 8px;
  gap: 18px;
}

.page-about .about-rebuild__item {
  padding: 22px 20px 24px;
  border-left: 2px solid var(--color-neon);
  background: rgba(14, 31, 58, .74);
}

.page-about .about-rebuild__item-title {
  margin: 12px 0 10px;
  font-size: 20px;
  line-height: 1.4;
  color: var(--color-paper);
}

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

.page-about .about-rebuild__stats {
  margin-top: 42px;
  gap: 18px;
}

.page-about .about-rebuild__stat {
  padding-top: 18px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-rebuild__stat .num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 30px);
  line-height: 1.1;
  color: var(--color-grass);
  font-variant-numeric: tabular-nums;
}

.page-about .about-rebuild__stat span:last-child {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--color-dust);
}

.page-about .about-rebuild__more {
  margin: 36px 0 0;
}

.page-about .about-rebuild__link {
  display: inline-block;
  font-size: 14px;
  color: var(--color-neon);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(37, 225, 208, .5);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

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

/* ===== 数据采编流程 ===== */
.page-about .about-flow {
  position: relative;
  padding: var(--about-pad) 0;
  background: var(--color-paper);
  color: var(--color-ink);
  overflow: hidden;
}

.page-about .about-flow::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 92px;
  background: linear-gradient(180deg, rgba(14, 31, 58, .16), transparent);
  clip-path: polygon(0 0, 100% 0, 100% 32%, 0 100%);
  pointer-events: none;
}

.page-about .about-flow__intro {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

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

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

.page-about .about-flow .headline,
.page-about .about-eco .headline {
  color: var(--color-ink);
}

.page-about .about-flow .body-text,
.page-about .about-eco .body-text {
  color: var(--about-ink-soft);
}

.page-about .about-flow__steps {
  list-style: none;
  margin: clamp(34px, 6vw, 56px) 0 0;
  padding: 0 0 16px;
  display: grid;
  gap: 24px;
}

.page-about .about-flow__step {
  position: relative;
  z-index: 1;
  padding: 24px 20px 22px;
  background: #ffffff;
  border: 1px solid rgba(4, 16, 31, .1);
}

.page-about .about-flow__step::before,
.page-about .about-flow__step::after {
  content: "";
  position: absolute;
  inset: 0;
  background: #ffffff;
  border: 1px solid rgba(4, 16, 31, .07);
  z-index: -1;
}

.page-about .about-flow__step::before {
  transform: translate(6px, 6px);
}

.page-about .about-flow__step::after {
  transform: translate(12px, 12px);
  opacity: .55;
}

.page-about .about-flow__step-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: #ffffff;
  background: var(--color-ink);
  padding: 3px 9px;
}

.page-about .about-flow__step-title {
  margin: 14px 0 8px;
  font-size: 18px;
  line-height: 1.4;
  color: var(--color-ink);
}

.page-about .about-flow__step .body-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
}

.page-about .about-flow__step .about-flow__meta {
  margin: 14px 0 0;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--color-sunset);
}

/* ===== 团队 ===== */
.page-about .about-team {
  padding: var(--about-pad) 0;
  background: var(--color-stand);
  color: var(--color-paper);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
}

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--about-line);
}

.page-about .about-team__roles {
  margin: 28px 0 0;
}

.page-about .about-team__role {
  padding: 18px 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-team__role dt {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--color-paper);
}

.page-about .about-team__role dt .num {
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1;
  color: var(--color-neon);
  font-variant-numeric: tabular-nums;
}

.page-about .about-team__role dd {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-mist);
}

/* ===== 合作生态 ===== */
.page-about .about-eco {
  position: relative;
  padding: var(--about-pad) 0;
  background: var(--color-paper);
  color: var(--color-ink);
}

.page-about .about-eco__cards {
  margin-top: 8px;
  gap: 20px;
}

.page-about .about-eco__card {
  padding: 26px 24px 28px;
}

.page-about .about-eco__card-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--about-ink-soft);
}

.page-about .about-eco__card-num {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: clamp(40px, 8vw, 58px);
  line-height: 1;
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
}

.page-about .about-eco__card .body-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
}

.page-about .about-eco__honors {
  margin-top: clamp(34px, 6vw, 52px);
  padding-top: 26px;
  border-top: 1px solid rgba(4, 16, 31, .12);
}

.page-about .about-eco__tags {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-eco__tag {
  border: 1px solid var(--color-sunset);
  background: rgba(255, 122, 61, .06);
  color: var(--color-ink);
  padding: 9px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .05em;
}

.page-about .about-eco__cta {
  margin: 30px 0 0;
}

.page-about .about-eco__link {
  font-size: 14px;
  color: var(--color-ink);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 2px solid var(--color-sunset);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-eco__link:hover,
.page-about .about-eco__link:focus-visible {
  color: var(--color-sunset);
}

/* ===== 会员服务 ===== */
.page-about .about-service {
  padding: var(--about-pad) 0;
  background: var(--color-midnight);
  color: var(--color-paper);
}

.page-about .about-service__grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
}

.page-about .about-service__list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .about-service__list li {
  position: relative;
  padding: 18px 0 18px 22px;
  border-top: 1px solid var(--about-line);
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-mist);
}

.page-about .about-service__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  width: 8px;
  height: 8px;
  background: var(--color-grass);
  transform: rotate(45deg);
}

.page-about .about-service__list strong {
  color: var(--color-paper);
}

.page-about .about-service__list .mono {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--color-sunset);
  font-variant-numeric: tabular-nums;
  padding: 0 2px;
}

.page-about .about-service__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

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

.page-about .about-service__aside-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-about .about-service__aside-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-ink);
}

.page-about .about-service__aside-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  border: 1px solid var(--color-ink);
  transform: rotate(45deg);
}

/* ===== 收束 ===== */
.page-about .about-close {
  position: relative;
  overflow: hidden;
  padding: clamp(52px, 9vw, 98px) 0;
  background: linear-gradient(135deg, var(--color-stand), var(--color-midnight) 62%);
  color: var(--color-paper);
}

.page-about .about-close::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(70% 120% at 82% 8%, rgba(37, 225, 208, .2), transparent 62%);
  pointer-events: none;
}

.page-about .about-close__inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.page-about .about-close__title {
  margin: 0;
  font-size: clamp(28px, 5.4vw, 46px);
  line-height: 1.18;
  color: var(--color-paper);
}

.page-about .about-close__text {
  margin: 18px 0 0;
  font-size: clamp(15px, 2.3vw, 17px);
  line-height: 1.85;
  color: var(--color-mist);
}

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

/* ===== 断点 ===== */
@media (min-width: 760px) {
  .page-about .about-flow__steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
}

@media (min-width: 880px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(268px, .8fr);
    align-items: end;
  }

  .page-about .about-flow__intro {
    grid-template-columns: .85fr 1.15fr;
    align-items: center;
  }

  .page-about .about-flow__steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1.2fr .8fr;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .about-service__grid {
    grid-template-columns: 1.35fr .65fr;
    align-items: start;
  }
}

@media (hover: hover) and (min-width: 880px) {
  .page-about .about-flow__step .about-flow__meta {
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity .3s var(--ease), transform .3s var(--ease);
  }

  .page-about .about-flow__step:hover .about-flow__meta,
  .page-about .about-flow__step:focus-within .about-flow__meta {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 640px) {
  .page-about .about-era__stats,
  .page-about .about-rebuild__stats {
    grid-template-columns: 1fr;
  }

  .page-about .about-era__track {
    grid-auto-columns: minmax(200px, 74vw);
  }

  .page-about .about-hero__title-accent::after {
    width: 46%;
    height: 5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-flow__step .about-flow__meta {
    opacity: 1;
    transform: none;
    transition: none;
  }
}