.page-about {
  background: var(--paper);
  color: var(--brown-ink);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 28px) 0 clamp(36px, 6vw, 68px);
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(53, 224, 208, .16), transparent 58%),
    linear-gradient(170deg, var(--ink-green) 0%, var(--arena-black) 100%);
  color: var(--paper);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(53, 224, 208, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(53, 224, 208, .07) 1px, transparent 1px);
  background-size: 96px 96px;
  pointer-events: none;
}

.page-about .about-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumbs,
.page-about .about-hero .breadcrumbs a {
  color: var(--mist);
}

.page-about .about-hero .breadcrumbs a:hover,
.page-about .about-hero .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 32px;
  margin-top: 26px;
}

.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-about .about-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--data);
  flex: none;
}

.page-about h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5.6vw, 54px);
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 36px;
  margin: 28px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid rgba(127, 184, 174, .3);
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 100px;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 600;
  line-height: 1;
  color: var(--data);
}

.page-about .about-fact__unit {
  font-size: .55em;
  margin-left: 2px;
}

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

.page-about .about-hero__figure {
  margin: 0;
  border: 1px solid rgba(53, 224, 208, .3);
}

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 52px;
    align-items: end;
  }
}

/* ---------- 画布与坐标栏 ---------- */
.page-about .about-canvas {
  padding: 0 0 clamp(44px, 7vw, 92px);
}

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

.page-about .about-stack {
  min-width: 0;
}

.page-about .about-rail {
  border-bottom: 1px solid rgba(36, 28, 20, .16);
  padding: 14px 0 10px;
}

.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-about .about-rail__list a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  padding: 6px 10px;
  border: 1px solid rgba(36, 28, 20, .2);
  color: var(--brown-ink);
  text-decoration: none;
  font-size: 13px;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-about .about-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan-deep);
}

.page-about .about-rail__list a:hover,
.page-about .about-rail__list a:focus-visible {
  background: var(--ink-green);
  border-color: var(--ink-green);
  color: var(--paper);
}

.page-about .about-rail__list a:hover .about-rail__num,
.page-about .about-rail__list a:focus-visible .about-rail__num {
  color: var(--data);
}

@media (min-width: 1080px) {
  .page-about .about-canvas__grid {
    grid-template-columns: 176px minmax(0, 1fr);
    gap: 0 56px;
    align-items: start;
  }

  .page-about .about-rail {
    border-bottom: 0;
    border-right: 1px solid rgba(36, 28, 20, .16);
    padding: 44px 0 0;
    align-self: stretch;
  }

  .page-about .about-rail__list {
    position: sticky;
    top: calc(var(--header-h) + 16px);
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0 18px 0 0;
  }

  .page-about .about-rail__list a {
    width: 100%;
    border: 0;
    border-left: 2px solid transparent;
    padding: 9px 10px;
    font-size: 14px;
    color: rgba(36, 28, 20, .7);
  }

  .page-about .about-rail__list a:hover,
  .page-about .about-rail__list a:focus-visible {
    background: rgba(53, 224, 208, .12);
    border-left-color: var(--cyan);
    color: var(--brown-ink);
  }

  .page-about .about-rail__list a:hover .about-rail__num,
  .page-about .about-rail__list a:focus-visible .about-rail__num {
    color: var(--cyan-deep);
  }
}

/* ---------- 区块骨架 ---------- */
.page-about .about-block {
  padding: clamp(38px, 6vw, 74px) 0;
  border-bottom: 1px solid rgba(36, 28, 20, .12);
}

.page-about .about-block:last-child {
  border-bottom: 0;
}

.page-about .about-head {
  max-width: 72ch;
}

.page-about .about-head__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan-deep);
}

.page-about .about-head__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.3;
  letter-spacing: -.015em;
  color: var(--brown-ink);
}

.page-about .about-head__note {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(36, 28, 20, .72);
}

.page-about .about-text {
  margin-top: 18px;
}

.page-about .about-text p {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(36, 28, 20, .84);
}

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

/* ---------- 三类用户 ---------- */
.page-about .about-points {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-points__item {
  padding: 18px 18px 20px;
  border: 1px solid rgba(36, 28, 20, .16);
  border-top: 3px solid var(--cyan);
  background: rgba(255, 255, 255, .4);
}

.page-about .about-points__idx {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan-deep);
}

.page-about .about-points__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(36, 28, 20, .82);
}

@media (min-width: 780px) {
  .page-about .about-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 服务分类索引 ---------- */
.page-about .about-catalog {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(36, 28, 20, .18);
}

.page-about .about-catalog__row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 20px 10px 20px 0;
  border-bottom: 1px solid rgba(36, 28, 20, .16);
  transition: background-color .2s var(--ease);
}

.page-about .about-catalog__row:hover {
  background: rgba(53, 224, 208, .09);
}

.page-about .about-catalog__num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan-deep);
  padding-top: 3px;
}

.page-about .about-catalog__name {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -.01em;
  color: var(--brown-ink);
}

.page-about .about-catalog__desc {
  margin: 8px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(36, 28, 20, .78);
}

.page-about .about-catalog__cycle {
  grid-column: 2;
  justify-self: start;
  margin-top: 10px;
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--brown-ink);
  background: rgba(242, 194, 48, .28);
  border-left: 2px solid var(--data);
}

@media (min-width: 900px) {
  .page-about .about-catalog__row {
    grid-template-columns: 56px minmax(0, 1fr) 232px;
    gap: 0 24px;
    align-items: start;
    padding-right: 14px;
  }

  .page-about .about-catalog__cycle {
    grid-column: 3;
    justify-self: end;
    margin-top: 4px;
    text-align: right;
  }
}

/* ---------- 深底区块 ---------- */
.page-about .about-block--deep {
  position: relative;
  overflow: hidden;
  padding-inline: clamp(18px, 3vw, 40px);
  background: linear-gradient(158deg, var(--ink-green) 0%, var(--arena-black) 100%);
  border-bottom-color: transparent;
  color: var(--paper);
}

.page-about .about-block--deep .about-head__idx {
  color: var(--cyan);
}

.page-about .about-block--deep .about-head__title {
  color: var(--paper);
}

.page-about .about-block--deep .about-head__note {
  color: var(--mist);
}

/* ---------- 发展历程 ---------- */
.page-about .about-timeline__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-about .about-timeline__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .26;
}

.page-about .about-timeline__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(11, 43, 38, .88), rgba(10, 20, 19, .72));
}

.page-about .about-timeline > *:not(.about-timeline__bg) {
  position: relative;
  z-index: 1;
}

.page-about .about-timeline__list {
  margin: 32px 0 0;
  padding: 0 0 0 28px;
  list-style: none;
  border-left: 1px solid rgba(53, 224, 208, .38);
}

.page-about .tl-node {
  position: relative;
  padding: 0 0 30px;
}

.page-about .tl-node:last-child {
  padding-bottom: 0;
}

.page-about .tl-node__dot {
  position: absolute;
  left: -35px;
  top: 5px;
  width: 13px;
  height: 13px;
  background: var(--ink-green);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
}

.page-about .tl-node__stage {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--data);
}

.page-about .tl-node__title {
  margin: 9px 0 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .tl-node__text {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .about-timeline__list {
    padding-left: 34px;
  }

  .page-about .tl-node {
    padding-bottom: 36px;
  }

  .page-about .tl-node__dot {
    left: -41px;
  }
}

/* ---------- 内容团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 26px;
  margin-top: 20px;
}

.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(36, 28, 20, .16);
  border: 1px solid rgba(36, 28, 20, .16);
}

.page-about .about-team__stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px 20px;
  background: var(--paper);
}

.page-about .about-team__num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  line-height: 1;
  color: var(--cyan-deep);
}

.page-about .about-team__unit {
  font-size: .55em;
  margin-left: 2px;
}

.page-about .about-team__lbl {
  font-size: 13px;
  line-height: 1.55;
  color: rgba(36, 28, 20, .72);
}

@media (min-width: 900px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    gap: 44px;
    align-items: start;
  }
}

/* ---------- 贵州本地化 ---------- */
.page-about .about-region {
  display: grid;
  gap: 28px;
  margin-top: 20px;
}

.page-about .about-region__text p {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(36, 28, 20, .84);
}

.page-about .about-region__list {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(36, 28, 20, .16);
}

.page-about .about-region__list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(36, 28, 20, .12);
  font-size: 14.5px;
  color: rgba(36, 28, 20, .82);
}

.page-about .about-region__num {
  min-width: 54px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--cyan-deep);
}

.page-about .about-region__figure {
  margin: 0;
  border: 1px solid rgba(36, 28, 20, .18);
}

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

@media (min-width: 900px) {
  .page-about .about-region {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 46px;
    align-items: start;
  }
}

/* ---------- 合作与认可 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  background: rgba(53, 224, 208, .18);
  border: 1px solid rgba(53, 224, 208, .18);
}

.page-about .about-partners__item {
  padding: 22px 20px 24px;
  background: var(--arena-black);
}

.page-about .about-partners__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1;
  color: var(--data);
}

.page-about .about-partners__title {
  margin: 12px 0 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-partners__item p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

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

@media (min-width: 1100px) {
  .page-about .about-partners {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 收尾 ---------- */
.page-about .about-block--cta {
  padding-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-cta__title {
  margin: 0;
  max-width: 34ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.32;
  letter-spacing: -.015em;
  color: var(--brown-ink);
}

.page-about .about-cta__text {
  margin: 14px 0 22px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(36, 28, 20, .78);
}

.page-about .about-block--cta .btn-row {
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 无障碍与降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-catalog__row,
  .page-about .about-rail__list a {
    transition: none;
  }
}
</style>