.page-about {
  --about-rail-w: 190px;
  --about-col-gap: clamp(32px, 5vw, 88px);
  --about-flow-pad: clamp(18px, 3.4vw, 46px);
  position: relative;
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--gray);
}
.page-about .breadcrumb {
  padding: calc(var(--header-h) + 14px) var(--gutter) 0;
  max-width: var(--content);
  margin: 0 auto;
}
.page-about .breadcrumb a {
  color: var(--gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan-line);
}
.page-about .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--divider);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  max-width: var(--content);
  margin: 0 auto;
  padding: clamp(40px, 7vw, 96px) var(--gutter) clamp(48px, 7vw, 96px);
  display: grid;
  gap: 40px;
  grid-template-columns: 1fr;
}
.page-about .about-hero__glow {
  position: absolute;
  inset: 0 0 auto auto;
  width: min(560px, 70vw);
  height: min(560px, 70vw);
  background:
    radial-gradient(circle at 70% 30%, var(--green-soft), transparent 62%),
    radial-gradient(circle at 30% 70%, var(--purple-soft), transparent 60%);
  pointer-events: none;
  filter: blur(6px);
}
.page-about .about-hero__inner {
  position: relative;
}
.page-about .about-hero__kicker {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-about .about-hero__title {
  margin: 0 0 24px;
  font-size: clamp(38px, 8.2vw, 96px);
  font-weight: 900;
  line-height: .96;
  letter-spacing: -.02em;
  color: var(--white);
  max-width: 16ch;
}
.page-about .about-hero__mark {
  display: inline-block;
  color: var(--green);
  position: relative;
}
.page-about .about-hero__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: .08em;
  height: .1em;
  background: var(--green);
  opacity: .28;
  transform: skewX(-14deg);
}
.page-about .about-hero__lead {
  margin: 0 0 32px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--gray);
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero__figure {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 26px 28px;
  align-self: start;
  background: var(--panel);
  border-left: 3px solid var(--green);
  clip-path: polygon(0 0, 100% 0, calc(100% - var(--cut)) 100%, 0 100%);
}
.page-about .about-hero__num {
  font-size: clamp(48px, 9vw, 84px);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}
.page-about .about-hero__numlabel {
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--gray);
}

/* ---------- 画布骨架 ---------- */
.page-about .about-canvas {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-col-gap);
  padding-bottom: clamp(64px, 9vw, 128px);
}

/* 章节导航 */
.page-about .about-nav {
  position: relative;
}
.page-about .about-nav__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gray);
}
.page-about .about-nav__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: thin;
  padding-bottom: 6px;
}
.page-about .about-nav__list li {
  flex: 0 0 auto;
}
.page-about .about-nav__list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--gray);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.page-about .about-nav__list a:hover,
.page-about .about-nav__list a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan-line);
}
.page-about .about-nav__list a[aria-current="true"] {
  color: var(--bg);
  background: var(--green);
  border-color: var(--green);
  font-weight: 700;
}

/* 连续画布与脊柱线 */
.page-about .about-flow {
  position: relative;
  padding-left: var(--about-flow-pad);
}
.page-about .about-flow::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--green-line) 0%, var(--line) 28%, var(--line) 82%, transparent 100%);
}
.page-about .about-sec {
  position: relative;
  padding-bottom: clamp(56px, 8vw, 104px);
}
.page-about .about-sec:last-child {
  padding-bottom: 0;
}
.page-about .about-sec::before {
  content: "";
  position: absolute;
  top: 10px;
  left: calc(1px - var(--about-flow-pad));
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--green);
  box-shadow: 0 0 0 4px var(--green-soft);
}
.page-about .about-sec__index {
  display: block;
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--cyan);
}
.page-about .about-sec__title {
  margin: 0 0 18px;
  font-size: clamp(26px, 4.2vw, 44px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--white);
  max-width: 22ch;
}
.page-about .about-sec__lead {
  margin: 0 0 36px;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 通用两栏 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
  margin-bottom: 44px;
}
.page-about .about-split__text p {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
}
.page-about .about-split__media {
  margin: 0;
}
.page-about .about-split__media img,
.page-about .about-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--panel);
}
.page-about .media-frame__caption {
  margin-top: 10px;
  font-size: 12px;
  color: var(--gray);
  letter-spacing: .04em;
}

/* 事实列表 */
.page-about .about-facts {
  margin: 26px 0 0;
  display: grid;
  gap: 1px;
  background: var(--line);
}
.page-about .about-facts__item {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--panel);
}
.page-about .about-facts dt {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gray);
}
.page-about .about-facts dd {
  margin: 0;
  font-size: 15px;
  color: var(--white);
}

/* ---------- 团队横向条 ---------- */
.page-about .team-strip {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 14px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}
.page-about .team-strip:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 6px;
}
.page-about .team-seg {
  flex: 0 0 clamp(260px, 78vw, 340px);
  scroll-snap-align: start;
  padding: 26px 24px 22px;
  background: var(--panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  position: relative;
}
.page-about .team-seg::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}
.page-about .team-seg--green::before { background: var(--green); }
.page-about .team-seg--cyan::before { background: var(--cyan); }
.page-about .team-seg--orange::before { background: var(--orange); }
.page-about .team-seg__no {
  display: block;
  font-size: clamp(44px, 9vw, 64px);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 14px;
}
.page-about .team-seg--green .team-seg__no { color: var(--green); }
.page-about .team-seg--cyan .team-seg__no { color: var(--cyan); }
.page-about .team-seg--orange .team-seg__no { color: var(--orange); }
.page-about .team-seg__name {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}
.page-about .team-seg p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}
.page-about .team-seg__foot {
  padding-top: 12px;
  border-top: 1px solid var(--divider);
  font-size: 12px !important;
  color: var(--gray) !important;
  letter-spacing: .04em;
}

/* ---------- 三步流程 ---------- */
.page-about .flow-steps {
  display: grid;
  gap: 18px;
}
.page-about .flow-step {
  position: relative;
  padding: 24px 22px 22px 30px;
  background: var(--panel);
  clip-path: polygon(0 0, 100% 0, calc(100% - var(--cut)) 100%, 0 100%);
  transition: background .18s var(--ease);
}
.page-about .flow-step::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
}
.page-about .flow-step--1::before { background: var(--green); }
.page-about .flow-step--2::before { background: var(--cyan); }
.page-about .flow-step--3::before { background: var(--orange); }
.page-about .flow-step:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}
.page-about .flow-step__no {
  display: block;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--gray);
  margin-bottom: 8px;
}
.page-about .flow-step__title {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}
.page-about .flow-step > p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--gray);
}
.page-about .flow-step__detail {
  margin-top: 0 !important;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 13px !important;
  line-height: 1.7;
  color: var(--gray);
  border-top: 1px solid transparent;
  transition: max-height .28s var(--ease), opacity .28s var(--ease), margin-top .28s var(--ease), padding-top .28s var(--ease), border-color .28s var(--ease);
}
.page-about .flow-step:hover .flow-step__detail,
.page-about .flow-step:focus-within .flow-step__detail,
.page-about .flow-step:focus .flow-step__detail {
  max-height: 220px;
  opacity: 1;
  margin-top: 12px !important;
  padding-top: 12px;
  border-top-color: var(--divider);
}

/* ---------- 合作生态 ---------- */
.page-about .about-banner {
  margin: 0 0 36px;
}
.page-about .eco-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}
.page-about .eco-map {
  display: block;
  width: 100%;
  height: auto;
  background: linear-gradient(160deg, var(--panel), rgba(15, 23, 36, .35));
  border: 1px solid var(--line);
}
.page-about .eco-map__lines line {
  stroke: var(--divider);
  stroke-width: 1;
  stroke-dasharray: 4 7;
}
.page-about .eco-map__nodes circle.is-data {
  fill: var(--green);
}
.page-about .eco-map__nodes circle.is-media {
  fill: var(--cyan);
}
.page-about .eco-map__hub rect {
  fill: var(--panel);
  stroke: var(--green-line);
  stroke-width: 1.5;
}
.page-about .eco-map__hub text {
  fill: var(--white);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  text-anchor: middle;
}
.page-about .eco-legend__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 20px;
}
.page-about .eco-legend__item {
  position: relative;
  padding-left: 24px;
}
.page-about .eco-legend__dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.page-about .eco-legend__item--data .eco-legend__dot { background: var(--green); }
.page-about .eco-legend__item--media .eco-legend__dot { background: var(--cyan); }
.page-about .eco-legend__item--open .eco-legend__dot { background: var(--orange); }
.page-about .eco-legend__item strong {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
  color: var(--white);
}
.page-about .eco-legend__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 覆盖范围 ---------- */
.page-about .coverage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  margin-bottom: 40px;
}
.page-about .coverage-stat {
  padding: 22px 18px;
  background: var(--bg);
}
.page-about .coverage-stat__v {
  display: block;
  font-size: clamp(30px, 6vw, 48px);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 10px;
}
.page-about .coverage-stat--green .coverage-stat__v { color: var(--green); }
.page-about .coverage-stat--cyan .coverage-stat__v { color: var(--cyan); }
.page-about .coverage-stat--orange .coverage-stat__v { color: var(--orange); }
.page-about .coverage-stat__k {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--white);
}
.page-about .coverage-stat p {
  margin: 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--gray);
}
.page-about .coverage-scene {
  padding: 26px 24px;
  background: var(--panel);
  border-left: 3px solid var(--cyan);
  clip-path: polygon(0 0, 100% 0, calc(100% - var(--cut)) 100%, 0 100%);
}
.page-about .coverage-scene__title {
  margin: 0 0 14px;
  font-size: 19px;
  font-weight: 700;
  color: var(--white);
}
.page-about .coverage-scene > p {
  margin: 0 0 20px;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}
.page-about .coverage-scene__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.page-about .coverage-scene__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}
.page-about .coverage-scene__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: rotate(45deg);
}
.page-about .coverage-scene__list strong {
  color: var(--white);
}

/* ---------- 体验标准 ---------- */
.page-about .std-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
}
.page-about .std-item {
  background: var(--purple-soft);
}
.page-about .std-item details {
  padding: 18px 20px;
}
.page-about .std-item summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding-right: 34px;
  font-size: 15px;
  font-weight: 500;
  color: var(--white);
  min-height: 24px;
}
.page-about .std-item summary::-webkit-details-marker {
  display: none;
}
.page-about .std-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: -2px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--green);
  transition: transform .18s var(--ease);
}
.page-about .std-item details[open] summary::after {
  content: "−";
  transform: rotate(180deg);
}
.page-about .std-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}
.page-about .std-item p {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.74;
  color: var(--gray);
}

/* ---------- 沟通 ---------- */
.page-about .about-sec--talk {
  padding-bottom: 0;
}
.page-about .talk-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}
.page-about .talk-note {
  margin: 0;
  max-width: 64ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--gray);
  padding-top: 18px;
  border-top: 1px solid var(--divider);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
  .page-about .about-hero__figure {
    min-width: 210px;
  }
  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
  }
  .page-about .about-split--reverse .about-split__media {
    order: 0;
  }
  .page-about .coverage-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .eco-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 44px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-canvas {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
  }
  .page-about .about-nav {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }
  .page-about .about-nav__list {
    flex-direction: column;
    overflow: visible;
    gap: 4px;
  }
  .page-about .about-nav__list a {
    border: none;
    background: transparent;
    border-radius: 0;
    padding: 0 0 0 16px;
    position: relative;
    font-size: 14px;
  }
  .page-about .about-nav__list a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--line);
    transition: background .18s var(--ease);
  }
  .page-about .about-nav__list a:hover::before,
  .page-about .about-nav__list a:focus-visible::before {
    background: var(--cyan);
  }
  .page-about .about-nav__list a[aria-current="true"] {
    background: transparent;
    color: var(--green);
    font-weight: 700;
  }
  .page-about .about-nav__list a[aria-current="true"]::before {
    background: var(--green);
    box-shadow: 0 0 0 3px var(--green-soft);
  }
  .page-about .flow-step {
    padding: 30px 28px 26px 36px;
  }
  .page-about .flow-step--2 {
    margin-left: clamp(0px, 4vw, 56px);
  }
  .page-about .flow-step--3 {
    margin-left: clamp(0px, 8vw, 112px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-strip,
  .page-about .about-nav__list {
    scroll-behavior: auto;
  }
  .page-about .flow-step__detail,
  .page-about .std-item summary::after,
  .page-about .team-seg,
  .page-about .about-nav__list a {
    transition: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</｜｜DSML｜｜ calls>