.page-about {
  --about-pad: clamp(38px, 6vw, 76px);
  --about-frame: 1px solid var(--line-on-dark);
  background: var(--indigo);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-head);
  letter-spacing: -0.01em;
}

.page-about .mono,
.page-about .eyebrow {
  font-family: var(--font-mono);
}

/* ---------- 面包屑 ---------- */
.page-about .path-bar {
  background: var(--midnight);
  border-bottom: 1px solid var(--line-on-dark);
}

.page-about .path-bar__inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 11px 0;
}

.page-about .path-bar__list {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-about .path-bar__link {
  color: var(--screen-soft);
  text-decoration: none;
}

.page-about .path-bar__link:hover {
  color: var(--paper);
  text-decoration: underline;
}

.page-about .path-bar__sep {
  color: var(--mist);
}

.page-about .path-bar__current {
  color: var(--copper);
}

.page-about .path-bar__copy {
  margin-left: auto;
  border: 1px solid var(--line-on-dark-strong);
  background: transparent;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 12px;
  cursor: pointer;
  transition: border-color .3s var(--ease), color .3s var(--ease);
}

.page-about .path-bar__copy:hover {
  border-color: var(--copper);
  color: var(--copper);
}

/* ---------- 首屏拼贴 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 40px 0 54px;
  border-bottom: 1px solid var(--line-on-dark);
  background:
    radial-gradient(circle at 88% 8%, rgba(91, 140, 110, .28), transparent 46%),
    radial-gradient(circle at 6% 92%, rgba(46, 111, 142, .3), transparent 52%),
    var(--indigo);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--halftone) 1px, transparent 1px);
  background-size: 12px 12px;
  opacity: .07;
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: 30px;
}

.page-about .about-hero__intro .eyebrow {
  margin: 0 0 12px;
  color: var(--copper);
  font-size: 13px;
  letter-spacing: .1em;
}

.page-about .about-hero h1 {
  margin: 0;
  font-size: clamp(30px, 7.2vw, 58px);
  line-height: 1.14;
  color: var(--paper);
}

.page-about .about-hero .lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(245, 241, 232, .8);
}

.page-about .about-badges {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-badge {
  border: 1px solid var(--line-on-dark);
  border-left: 3px solid var(--copper);
  background: rgba(11, 23, 43, .55);
  padding: 12px 14px;
}

.page-about .about-badge__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--copper);
  line-height: 1.2;
}

.page-about .about-badge__label {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--mist);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  padding: 8px;
  background: rgba(11, 23, 43, .6);
  border: var(--about-frame);
  box-shadow: 0 24px 50px rgba(11, 23, 43, .45);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.page-about .about-hero__media .media__caption {
  display: block;
  padding: 10px 4px 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-hero__media .media__badge {
  position: absolute;
  top: 18px;
  left: 18px;
  background: var(--cinnabar);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 4px 9px;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  padding: var(--about-pad) 0;
}

.page-about .about-line {
  position: relative;
  display: grid;
  gap: 24px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-line::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--copper), var(--jade) 55%, var(--screen));
  opacity: .65;
}

.page-about .about-line__item {
  position: relative;
  padding-left: 36px;
}

.page-about .about-line__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--paper);
  border: 3px solid var(--copper);
  box-shadow: 0 0 0 4px rgba(197, 139, 74, .18);
}

.page-about .about-line__year {
  display: block;
  margin-bottom: 8px;
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--cinnabar);
}

.page-about .about-line__panel {
  border-left: 3px solid var(--jade);
  box-shadow: 0 12px 26px rgba(11, 23, 43, .1);
}

.page-about .about-line__panel .panel__tag {
  color: var(--screen);
}

.page-about .about-line__panel .panel__title {
  color: var(--ink);
}

.page-about .about-line__panel .panel__body {
  color: rgba(26, 26, 26, .74);
}

.page-about .about-more {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line-on-paper);
}

.page-about .about-more summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--screen);
}

.page-about .about-more summary:hover {
  color: var(--cinnabar);
}

.page-about .about-more p {
  margin: 9px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(26, 26, 26, .72);
}

/* ---------- 业务版图 ---------- */
.page-about .about-map {
  padding: var(--about-pad) 0;
}

.page-about .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
}

.page-about .filter-bar__label {
  margin-right: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--mist);
}

.page-about .filter-chip {
  border: 1px solid var(--line-on-dark-strong);
  background: transparent;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 8px 14px;
  cursor: pointer;
  transition: border-color .3s var(--ease), color .3s var(--ease), background .3s var(--ease);
}

.page-about .filter-chip:hover {
  border-color: var(--jade);
  color: var(--jade);
}

.page-about .filter-chip[aria-pressed="true"] {
  background: var(--copper);
  border-color: var(--copper);
  color: var(--midnight);
}

.page-about .filter-bar__status {
  font-size: 12px;
  color: var(--mist);
}

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

.page-about .about-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  border: 1px solid var(--line-on-dark);
  background: linear-gradient(180deg, rgba(18, 35, 63, .92), rgba(11, 23, 43, .96));
  transition: border-color .35s var(--ease), transform .35s var(--ease);
}

.page-about .about-panel:hover {
  border-color: var(--copper);
  transform: translateY(-3px);
}

.page-about .about-panel--park { border-top: 3px solid var(--jade); }
.page-about .about-panel--digital { border-top: 3px solid var(--screen); }
.page-about .about-panel--supply { border-top: 3px solid var(--copper); }

.page-about .about-panel__num {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--copper);
}

.page-about .about-panel__title {
  margin: 0;
  font-size: 21px;
  color: var(--paper);
}

.page-about .about-panel__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(245, 241, 232, .78);
}

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

.page-about .about-panel__facts li {
  border: 1px solid var(--line-on-dark-strong);
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--paper);
}

.page-about .about-panel__link {
  margin-top: auto;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--screen-soft);
  text-decoration: none;
}

.page-about .about-panel__link:hover {
  color: var(--copper);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: var(--about-pad) 0;
}

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

.page-about .about-team__para {
  margin: 22px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(26, 26, 26, .74);
}

.page-about .about-principles {
  display: grid;
  gap: 16px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-principles li {
  border-top: 2px solid var(--jade);
  padding-top: 12px;
}

.page-about .about-principles .mono {
  font-size: 13px;
  color: var(--copper);
}

.page-about .about-principles h3 {
  margin: 6px 0;
  font-size: 17px;
  color: var(--ink);
}

.page-about .about-principles p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(26, 26, 26, .7);
}

.page-about .about-team__media {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--line-on-paper);
  background: rgba(255, 255, 255, .5);
  box-shadow: 0 16px 32px rgba(11, 23, 43, .12);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.page-about .about-team__media .media__caption {
  display: block;
  padding: 10px 4px 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: rgba(26, 26, 26, .55);
}

/* ---------- 资质与荣誉 ---------- */
.page-about .about-honors {
  padding: var(--about-pad) 0;
  background: var(--paper-2);
}

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

.page-about .about-honor-list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-honor {
  border: 1px solid var(--line-on-paper);
  background: rgba(245, 241, 232, .78);
  padding: 14px 16px;
  outline: none;
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}

.page-about .about-honor:hover,
.page-about .about-honor:focus-visible {
  border-color: var(--copper);
  transform: translateY(-2px);
}

.page-about .about-honor__mark {
  display: inline-block;
  padding: 2px 7px;
  background: var(--indigo);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-about .about-honor__name {
  display: block;
  margin-top: 8px;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink);
}

.page-about .about-honor__detail {
  display: block;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(26, 26, 26, .68);
  transition: max-height .35s var(--ease), opacity .3s var(--ease), margin-top .3s var(--ease);
}

.page-about .about-honor:hover .about-honor__detail,
.page-about .about-honor:focus-visible .about-honor__detail {
  max-height: 90px;
  opacity: 1;
  margin-top: 6px;
}

.page-about .about-honors__media {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--line-on-paper);
  background: rgba(245, 241, 232, .85);
  box-shadow: 0 16px 32px rgba(11, 23, 43, .12);
}

.page-about .about-honors__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 1 / 1;
}

.page-about .about-honors__media .media__caption {
  display: block;
  padding: 10px 4px 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: rgba(26, 26, 26, .55);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  padding: var(--about-pad) 0;
}

.page-about .about-eco__list {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-eco__list li {
  border: 1px solid var(--line-on-dark);
  border-left: 3px solid var(--copper);
  background: rgba(11, 23, 43, .6);
  padding: 16px 18px;
  transition: border-color .3s var(--ease);
}

.page-about .about-eco__list li:hover {
  border-left-color: var(--jade);
}

.page-about .about-eco__list h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--paper);
}

.page-about .about-eco__list p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(245, 241, 232, .74);
}

.page-about .about-eco__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line-on-dark);
}

.page-about .about-eco__stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  color: var(--copper);
}

.page-about .about-eco__stats .stat__label {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 未来方向 ---------- */
.page-about .about-next {
  padding: var(--about-pad) 0 calc(var(--about-pad) + 8px);
}

.page-about .about-next__grid {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.page-about .about-next__card {
  border: 1px solid var(--line-on-paper);
  border-top: 3px solid var(--screen);
  background: rgba(255, 255, 255, .58);
  padding: 18px 20px;
}

.page-about .about-next__num {
  font-size: 13px;
  color: var(--cinnabar);
}

.page-about .about-next__card h3 {
  margin: 8px 0;
  font-size: 19px;
  color: var(--ink);
}

.page-about .about-next__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(26, 26, 26, .72);
}

.page-about .about-next__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 30px;
  padding: 22px;
  border: 1px solid var(--line-on-dark);
  border-left: 4px solid var(--copper);
  background: var(--indigo);
  box-shadow: 0 18px 36px rgba(11, 23, 43, .22);
}

.page-about .about-next__cta p {
  margin: 0;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(245, 241, 232, .84);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-about .about-principles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-about .about-eco__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 56px 0 76px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-hero__media {
    margin-top: 46px;
  }

  .page-about .about-line {
    gap: 30px;
  }

  .page-about .about-line::before {
    left: 104px;
  }

  .page-about .about-line__item {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    column-gap: 36px;
    align-items: start;
    padding-left: 0;
  }

  .page-about .about-line__item::before {
    left: 96px;
    top: 30px;
  }

  .page-about .about-line__year {
    margin: 0;
    padding-top: 24px;
    text-align: right;
    font-size: 17px;
  }

  .page-about .about-line__item:nth-child(even) .about-line__panel {
    transform: translateX(22px);
  }

  .page-about .about-map__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-team__media {
    margin-top: 42px;
  }

  .page-about .about-honors__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-next__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-eco__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-panel,
  .page-about .about-honor,
  .page-about .about-line__item:nth-child(even) .about-line__panel {
    transition: none;
    transform: none;
  }
}