.page-about {
  --about-axis: 132px;
  --txt: var(--ink-soft);
  --txt-strong: var(--ink);
  --hair: rgba(18, 16, 14, .18);
  --hair-soft: rgba(18, 16, 14, .1);
}

.page-about .xy-band--deep,
.page-about .xy-band--green,
.page-about .xy-band--indigo,
.page-about .xy-band--wine {
  --txt: var(--on-dark);
  --txt-strong: var(--on-dark-strong);
  --hair: var(--line);
  --hair-soft: var(--line-soft);
}

.page-about .xy-band {
  padding: 52px 0;
}

@media (min-width: 900px) {
  .page-about .xy-band {
    padding: 84px 0;
  }
}

/* ---------- 开场 ---------- */

.page-about .about-intro {
  background-image:
    linear-gradient(rgba(46, 110, 112, .16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 110, 112, .1) 1px, transparent 1px);
  background-size: 100% 72px, 72px 100%;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--on-dark);
  margin-bottom: 34px;
}

.page-about .crumbs a {
  color: var(--on-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(244, 239, 230, .3);
}

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

.page-about .crumbs span[aria-current="page"] {
  color: var(--lime);
}

.page-about .about-intro__grid {
  display: grid;
  gap: 38px;
}

@media (min-width: 900px) {
  .page-about .about-intro__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: end;
  }
}

.page-about .about-intro__lead h1 {
  margin: 14px 0 20px;
  font-size: clamp(34px, 7.4vw, 68px);
  line-height: 1.06;
  letter-spacing: -.02em;
  font-weight: 900;
  color: var(--on-dark-strong);
  font-stretch: condensed;
  max-width: 16em;
}

.page-about .about-intro__deck {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--on-dark);
  max-width: 36em;
}

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

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 22px;
  margin: 0;
}

@media (min-width: 560px) and (max-width: 899px) {
  .page-about .about-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-facts__item {
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
  padding: 12px 0 14px;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-facts__item dd {
  margin: 0;
  font-size: 26px;
  line-height: 1;
  color: var(--orange);
  letter-spacing: .01em;
}

.page-about .about-facts__item dt {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--on-dark);
}

/* ---------- 章节骨架 ---------- */

.page-about .about-chapter {
  position: relative;
}

.page-about .about-chapter__grid {
  display: grid;
  gap: 18px;
}

@media (min-width: 900px) {
  .page-about .about-chapter__grid {
    grid-template-columns: var(--about-axis) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }
}

.page-about .about-axis {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-top: 4px;
}

@media (min-width: 900px) {
  .page-about .about-axis {
    position: sticky;
    top: 92px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

.page-about .about-axis__no {
  font-size: 32px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--orange);
  transition: color 260ms var(--ease);
}

.page-about .about-axis__name {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--txt);
}

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

@media (min-width: 900px) {
  .page-about .about-axis__rule {
    display: block;
    width: 1px;
    height: 84px;
    background: linear-gradient(var(--orange), rgba(245, 134, 43, 0));
  }
}

.page-about .about-chapter.is-active .about-axis__no {
  color: var(--lime);
}

.page-about .about-body {
  max-width: 900px;
}

.page-about .about-title {
  margin: 0 0 18px;
  font-size: clamp(23px, 3.6vw, 34px);
  line-height: 1.28;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--txt-strong);
}

.page-about .about-lead {
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--txt);
  max-width: 42em;
}

.page-about .about-prose {
  max-width: 42em;
}

.page-about .about-prose p {
  margin: 0 0 1.15em;
  line-height: 1.85;
  color: var(--txt);
}

.page-about .about-prose p:last-child {
  margin-bottom: 0;
}

/* ---------- 三点原则 ---------- */

.page-about .about-points {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  max-width: 46em;
  border-top: 1px solid var(--hair);
}

.page-about .about-points li {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hair-soft);
}

.page-about .about-points li > span {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--orange);
  padding-top: 5px;
}

.page-about .about-points li p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--txt);
}

.page-about .about-points li strong {
  color: var(--txt-strong);
  font-weight: 700;
}

/* ---------- 三代面板 ---------- */

.page-about .about-gens {
  margin-top: 4px;
}

.page-about .about-gens__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-about .about-gen-btn {
  font: inherit;
  font-size: 12px;
  letter-spacing: .08em;
  padding: 9px 14px;
  border: 1px solid var(--hair);
  background: transparent;
  color: var(--txt);
  border-radius: 0;
  cursor: pointer;
  transition: background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-about .about-gen-btn:hover,
.page-about .about-gen-btn:focus-visible {
  border-color: var(--orange);
  color: var(--orange-soft);
}

.page-about .about-gen-btn.is-active {
  background: var(--orange);
  border-color: var(--orange);
  color: #12100E;
  font-weight: 700;
}

.page-about .about-gens__items {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

@media (min-width: 900px) {
  .page-about .about-gens__items {
    grid-template-columns: 3fr 4fr 5fr;
  }
}

.page-about .about-gen {
  background: rgba(14, 59, 46, .55);
  padding: 22px 20px 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-gen.is-hidden {
  display: none;
}

.page-about .about-gen--g3 {
  background: rgba(31, 163, 184, .14);
  box-shadow: inset 0 2px 0 0 var(--lime);
}

.page-about .about-gen__year {
  margin: 0;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--lime);
}

.page-about .about-gen__name {
  margin: 0;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 800;
  color: var(--on-dark-strong);
}

.page-about .about-gen__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--on-dark);
}

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

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

/* ---------- 团队条形图 ---------- */

.page-about .about-bars {
  display: grid;
  gap: 24px;
  max-width: 48em;
}

.page-about .about-bar__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--hair-soft);
}

.page-about .about-bar__name {
  font-size: 16px;
  font-weight: 700;
  color: var(--on-dark-strong);
}

.page-about .about-bar__num {
  font-size: 22px;
  line-height: 1;
  color: var(--lime);
}

.page-about .about-bar__track {
  position: relative;
  height: 6px;
  margin-top: 12px;
  background: rgba(46, 110, 112, .3);
  overflow: hidden;
}

.page-about .about-bar__fill {
  display: block;
  height: 100%;
  transform-origin: left center;
  transition: transform 820ms var(--ease);
}

.page-about .about-bars.js-reveal .about-bar__fill {
  transform: scaleX(0);
}

.page-about .about-bars.js-reveal.is-in .about-bar__fill {
  transform: scaleX(1);
}

.page-about .about-bars.js-reveal.is-in .about-bar--b .about-bar__fill {
  transition-delay: 90ms;
}

.page-about .about-bars.js-reveal.is-in .about-bar--c .about-bar__fill {
  transition-delay: 180ms;
}

.page-about .about-bars.js-reveal.is-in .about-bar--d .about-bar__fill {
  transition-delay: 270ms;
}

.page-about .about-bar--a .about-bar__fill {
  width: 39%;
  background: var(--cyan);
}

.page-about .about-bar--b .about-bar__fill {
  width: 26%;
  background: var(--orange);
}

.page-about .about-bar--c .about-bar__fill {
  width: 15%;
  background: var(--lime);
}

.page-about .about-bar--d .about-bar__fill {
  width: 20%;
  background: var(--orange-soft);
}

.page-about .about-bar__note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--on-dark);
  max-width: 40em;
}

/* ---------- 采编三步 ---------- */

.page-about .about-steps {
  display: grid;
  gap: 1px;
  margin-top: 32px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  max-width: 52em;
}

@media (min-width: 760px) {
  .page-about .about-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-step {
  background: rgba(7, 35, 27, .72);
  padding: 20px 18px 22px;
  border-top: 2px solid var(--orange);
}

.page-about .about-step__no {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-about .about-step__t {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--on-dark-strong);
}

.page-about .about-step__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--on-dark);
}

/* ---------- 数字行 ---------- */

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 20px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--hair);
  max-width: 52em;
}

@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-stat__num {
  display: block;
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1;
  color: var(--lime);
  letter-spacing: .01em;
}

.page-about .about-stat__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--on-dark);
}

/* ---------- 合作链路 ---------- */

.page-about .about-chain {
  display: grid;
  gap: 14px;
  margin-top: 34px;
}

@media (min-width: 900px) {
  .page-about .about-chain {
    grid-template-columns: minmax(0, 1fr) 52px minmax(0, 1.2fr) 52px minmax(0, 1fr);
    gap: 0;
    align-items: stretch;
  }
}

.page-about .about-chain__group {
  display: grid;
  gap: 12px;
  align-content: center;
}

.page-about .about-chain__node {
  border: 1px solid var(--line);
  padding: 13px 15px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--on-dark-strong);
  background: rgba(18, 16, 14, .16);
}

.page-about .about-chain__node--hub {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  border-color: var(--lime);
  background: rgba(198, 242, 78, .1);
  font-weight: 700;
  font-size: 16px;
}

.page-about .about-chain__hub-num {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--lime);
}

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

@media (min-width: 900px) {
  .page-about .about-chain__link {
    display: block;
    position: relative;
  }

  .page-about .about-chain__link::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 10px;
    right: 10px;
    height: 1px;
    background: var(--cyan);
  }

  .page-about .about-chain__link::after {
    content: "";
    position: absolute;
    top: calc(50% - 3px);
    right: 8px;
    width: 6px;
    height: 6px;
    border-top: 1px solid var(--cyan);
    border-right: 1px solid var(--cyan);
    transform: rotate(45deg);
  }
}

/* ---------- 属地与联系 ---------- */

.page-about .about-contact {
  display: grid;
  gap: 0;
  margin: 34px 0 0;
  border-top: 1px solid var(--hair);
  max-width: 52em;
}

@media (min-width: 760px) {
  .page-about .about-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 36px;
  }
}

.page-about .about-contact__item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hair-soft);
}

.page-about .about-contact__item dt {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--orange);
  padding-top: 3px;
}

.page-about .about-contact__item dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--on-dark-strong);
  word-break: break-word;
}

.page-about .about-icp {
  margin: 22px 0 0;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--on-dark);
}

.page-about .about-icp .mono {
  color: var(--on-dark-strong);
}

/* ---------- 结尾索引条 ---------- */

.page-about .about-next {
  border-top: 2px solid var(--orange);
  padding: 40px 0 48px;
}

@media (min-width: 900px) {
  .page-about .about-next {
    padding: 52px 0 64px;
  }
}

.page-about .about-next__links {
  display: grid;
  gap: 1px;
  margin-top: 18px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

@media (min-width: 700px) {
  .page-about .about-next__links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-next__link {
  display: block;
  padding: 18px 16px;
  background: var(--green-deep);
  color: var(--on-dark-strong);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  background: rgba(245, 134, 43, .14);
  border-left-color: var(--orange);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-bar__fill,
  .page-about .about-bars.js-reveal .about-bar__fill,
  .page-about .about-axis__no,
  .page-about .about-gen-btn,
  .page-about .about-next__link {
    transition: none;
  }

  .page-about .about-bars.js-reveal .about-bar__fill {
    transform: scaleX(1);
  }
}