.page-about {
  --about-pad: clamp(18px, 4vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: 22px 30px;
  border-bottom: 1px solid var(--c-line);
  background:
    radial-gradient(760px 340px at 82% -14%, rgba(34, 224, 214, .16), transparent 64%),
    radial-gradient(620px 300px at 2% 4%, rgba(255, 122, 47, .10), transparent 62%);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(30, 46, 77, .5) 0 1px,
    transparent 1px 68px
  );
  opacity: .55;
}

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

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 18px;
}

.page-about .about-hero__title {
  margin-top: 10px;
  font-size: clamp(30px, 7.4vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--c-white);
}

.page-about .about-hero__note {
  margin-top: 14px;
  max-width: 58ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--c-body);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-hero__media {
  position: relative;
  border: 1px solid var(--c-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-panel);
}

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

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 14px 16px;
  background: #070E20;
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--c-cyan);
  line-height: 1;
}

.page-about .about-stat__label {
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--c-mute);
}

/* ---------- 目录 ---------- */
.page-about .about-toc {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  border-bottom: 1px solid var(--c-line);
  background: rgba(5, 10, 24, .9);
  backdrop-filter: blur(10px);
}

.page-about .about-toc__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-block: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-toc .toc__title {
  flex: none;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--c-mute);
}

.page-about .about-toc .toc__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-toc .toc__link {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  font-size: var(--fs-12);
  letter-spacing: .04em;
  color: var(--c-body);
  text-decoration: none;
  white-space: nowrap;
}

.page-about .about-toc .toc__link.is-active,
.page-about .about-toc .toc__link:hover {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
  box-shadow: var(--glow-cyan);
}

/* ---------- 通用窄栏正文 ---------- */
.page-about .about-lede {
  max-width: 62ch;
}

/* ---------- 数据链路 ---------- */
.page-about .about-pipeline__head {
  margin-bottom: 20px;
}

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

.page-about .about-flow__base {
  fill: none;
  stroke: var(--c-line);
  stroke-width: 1;
}

.page-about .about-flow__pulse {
  fill: none;
  stroke: var(--c-cyan);
  stroke-width: 1.5;
  stroke-dasharray: 120 880;
  animation: about-scan 5.5s linear infinite;
}

@keyframes about-scan {
  from { stroke-dashoffset: 1000; }
  to { stroke-dashoffset: 0; }
}

.page-about .about-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow__step {
  padding: 18px 16px 20px;
  border-top: 2px solid var(--c-cyan);
}

.page-about .about-flow__step:nth-child(3) {
  border-top-color: var(--c-orange);
}

.page-about .about-flow__no {
  display: block;
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--c-mute);
}

.page-about .about-flow__title {
  margin: 8px 0 8px;
  font-size: var(--fs-22);
  font-weight: 900;
  color: var(--c-white);
  line-height: 1.2;
}

.page-about .about-flow__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-body);
}

.page-about .about-pipeline__media {
  margin: 26px 0 0;
  border: 1px solid var(--c-line);
  background: var(--c-panel);
}

.page-about .about-pipeline__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  object-fit: cover;
}

/* ---------- 覆盖规模 ---------- */
.page-about .about-scale__band {
  padding: var(--about-pad);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-cyan);
  background:
    linear-gradient(160deg, #0C1730 0%, #050A18 68%);
  box-shadow: var(--shadow-panel);
}

.page-about .about-scale__head {
  max-width: 70ch;
}

.page-about .about-scale__text {
  margin: 14px 0 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--c-body);
}

.page-about .about-scale__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-about .about-scale__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px 20px;
  background: #08122A;
}

.page-about .about-scale__cell .num {
  font-family: var(--font-mono);
  font-size: clamp(38px, 10vw, 62px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--c-white);
}

.page-about .about-scale__label {
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--c-mute);
}

.page-about .about-scale__desc {
  margin: 6px 0 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--c-body);
}

/* ---------- 发展阶段 ---------- */
.page-about .about-timeline {
  display: flex;
  gap: 12px;
  margin-top: 22px;
  padding-bottom: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}

.page-about .about-phase {
  position: relative;
  flex: 0 0 82%;
  scroll-snap-align: start;
  padding: 18px 16px 20px;
  border: 1px solid var(--c-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-panel);
}

.page-about .about-phase::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 42px;
  height: 2px;
  background: var(--c-cyan);
}

.page-about .about-phase--now {
  border-color: rgba(255, 122, 47, .6);
  background: linear-gradient(170deg, rgba(255, 122, 47, .10), var(--c-panel) 60%);
}

.page-about .about-phase--now::before {
  background: var(--c-orange);
  width: 100%;
}

.page-about .about-phase__no {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--c-mute);
}

.page-about .about-phase__title {
  margin: 10px 0 10px;
  font-size: var(--fs-18);
  font-weight: 900;
  line-height: 1.35;
  color: var(--c-white);
}

.page-about .about-phase__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-body);
}

.page-about .about-phase__tag {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0 0;
}

.page-about .about-phase__live {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--c-orange);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-bars {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "name num"
    "track track"
    "desc desc";
  gap: 6px 12px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--c-line);
}

.page-about .about-bar__name {
  grid-area: name;
  font-size: var(--fs-16);
  font-weight: 900;
  color: var(--c-white);
}

.page-about .about-bar__num {
  grid-area: num;
  font-size: var(--fs-14);
  color: var(--c-cyan);
}

.page-about .about-bar__track {
  grid-area: track;
  height: 6px;
  background: #0A1428;
  border: 1px solid var(--c-line);
  overflow: hidden;
}

.page-about .about-bar__fill {
  display: block;
  height: 100%;
  width: 33.3%;
  background: linear-gradient(90deg, var(--c-cyan), #17a89f);
}

.page-about .about-bars > li:nth-child(2) .about-bar__fill { width: 21.9%; }
.page-about .about-bars > li:nth-child(3) .about-bar__fill { width: 18.8%; }

.page-about .about-bar--service .about-bar__fill {
  width: 26%;
  background: linear-gradient(90deg, var(--c-orange), #d15a15);
}

.page-about .about-bar__desc {
  grid-area: desc;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--c-body);
}

.page-about .about-team__media {
  margin: 0;
  border: 1px solid var(--c-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-panel);
}

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

/* ---------- 合作与认可 ---------- */
.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 22px;
}

.page-about .about-partners__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partner {
  padding: 16px 16px 18px;
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-cyan);
  background: #08122A;
}

.page-about .about-partner:nth-child(even) {
  border-left-color: var(--c-orange);
}

.page-about .about-partner__title {
  margin: 12px 0 8px;
  font-size: var(--fs-18);
  font-weight: 900;
  color: var(--c-white);
}

.page-about .about-partner__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-body);
}

.page-about .about-honor {
  padding: 18px 16px 20px;
  border: 1px solid var(--c-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-panel);
}

.page-about .about-honor__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  font-weight: 400;
  color: var(--c-mute);
}

.page-about .about-honor__label {
  display: inline-block;
  font-size: var(--fs-14);
  font-weight: 700;
  line-height: 1.6;
  color: var(--c-white);
}

.page-about .about-honor .acc {
  border-top: 1px solid var(--c-line);
}

.page-about .about-honor .acc:last-of-type {
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-honor__cta {
  margin: 16px 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-body);
}

.page-about .about-honor__cta a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 214, .4);
}

/* ---------- 下一步 ---------- */
.page-about .about-next__inner {
  padding: var(--about-pad);
  border: 1px solid var(--c-line);
  background:
    linear-gradient(120deg, rgba(6, 44, 51, .9), #050A18 62%);
  box-shadow: var(--shadow-panel);
}

.page-about .about-next__text {
  max-width: 64ch;
  margin: 12px 0 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--c-body);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 20px;
}

.page-about .about-next__link {
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 214, .45);
  padding-bottom: 2px;
}

.page-about .about-next__link--dim {
  color: var(--c-body);
  border-bottom-color: var(--c-line);
}

.page-about .about-next__link:hover {
  color: var(--c-white);
  border-bottom-color: var(--c-white);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

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

  .page-about .about-phase {
    flex: 0 0 46%;
  }

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

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding-block: 26px 40px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
    margin-top: 26px;
  }

  .page-about .about-hero__stats {
    margin-top: 34px;
  }

  .page-about .about-flow__line {
    display: block;
    width: 100%;
    height: 34px;
    margin: 4px 0 10px;
  }

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

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

  .page-about .about-phase {
    flex: 0 0 31%;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 30px;
  }

  .page-about .about-next__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "eyebrow links"
      "title links"
      "text links";
    align-items: center;
    gap: 0 40px;
  }

  .page-about .about-next__inner .eyebrow { grid-area: eyebrow; }
  .page-about .about-next__inner .h-sub { grid-area: title; margin: 8px 0 0; }
  .page-about .about-next__text { grid-area: text; }

  .page-about .about-next__links {
    grid-area: links;
    flex-direction: column;
    align-items: flex-start;
    margin-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-flow__pulse {
    animation: none;
  }
}
</main>