.page-about {
  --about-top-gap: 92px;
  --about-node: 14px;
  background: var(--ink);
  color: var(--text);
  overflow-x: hidden;
}

.page-about .container {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.page-about .about-top {
  max-width: var(--shell);
  margin: 0 auto;
  padding: calc(var(--about-top-gap) - 40px) var(--pad) 0;
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-about .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 6px;
  color: var(--grid-line);
}

.page-about .breadcrumb__link {
  color: var(--cyan);
  text-decoration: none;
}

.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 32px var(--pad) 56px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -120px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(0, 229, 195, 0.22), transparent 68%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--orange), var(--cyan) 45%, transparent);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--shell);
  margin: 0 auto;
  display: grid;
  gap: 34px;
}

.page-about .about-hero__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan-soft);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 10.5vw, 84px);
  line-height: 1;
  letter-spacing: 0.02em;
}

.page-about .about-hero__title em {
  font-style: normal;
  display: inline-block;
  padding: 0 10px;
  color: var(--ink-deep);
  background: var(--cyan);
  transform: skewX(-7deg);
}

.page-about .about-hero__lead {
  max-width: 46ch;
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 14px;
  background: var(--ink-mid);
  border: 1px solid var(--ink-line);
  border-left: 3px solid var(--orange);
}

.page-about .about-hero__num {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--text);
}

.page-about .about-hero__lab {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
}

.page-about .about-hero__figure .media {
  position: relative;
  overflow: hidden;
  border: 3px solid var(--cyan);
  box-shadow: var(--shadow-hard);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 88%);
  aspect-ratio: 16 / 9;
}

.page-about .about-hero__figure .media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.05);
}

.page-about .about-hero__caption {
  display: block;
  margin-top: 14px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-dim);
}

/* ---------- 通用区块头 ---------- */
.page-about .section {
  padding: 52px 0;
}

.page-about .section__head {
  max-width: 760px;
}

.page-about .section__num {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 5.4vw, 40px);
  line-height: 1.16;
  letter-spacing: 0.02em;
}

.page-about .section__lead {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 62ch;
}

/* ---------- N-01 时间轴 ---------- */
.page-about .about-line__list {
  position: relative;
  margin: 36px 0 0;
  padding: 0 0 0 32px;
  list-style: none;
}

.page-about .about-line__list::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(var(--cyan), var(--grid-line) 55%, transparent);
}

.page-about .about-line__item {
  position: relative;
  padding-bottom: 30px;
}

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

.page-about .about-line__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: var(--about-node);
  height: var(--about-node);
  background: var(--ink-deep);
  border: 2px solid var(--orange);
  transform: rotate(45deg);
}

.page-about .about-line__year {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 9px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--ink-deep);
  background: var(--cyan-soft);
}

.page-about .about-line__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}

.page-about .about-line__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 60ch;
}

/* ---------- N-02 团队 ---------- */
.page-about .about-team {
  background: var(--ink-mid);
  border-top: 1px solid var(--ink-line);
  border-bottom: 1px solid var(--ink-line);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 32px;
}

.page-about .about-team__card {
  --accent: var(--cyan);
  position: relative;
  padding: 20px 18px 22px;
  background: var(--ink);
  border: 1px solid var(--ink-line);
  border-top: 3px solid var(--accent);
  box-shadow: var(--shadow-hard);
}

.page-about .about-team__card:nth-child(2) { --accent: var(--orange); }
.page-about .about-team__card:nth-child(3) { --accent: var(--cyan-soft); }
.page-about .about-team__card:nth-child(4) { --accent: var(--orange-soft); }

.page-about .about-team__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.page-about .about-team__role {
  margin: 8px 0 6px;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.03em;
}

.page-about .about-team__meta {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.page-about .about-team__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-about .about-team__split {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__figure .media {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--grid-line);
  aspect-ratio: 4 / 3;
}

.page-about .about-team__figure .media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-team__caption {
  display: block;
  margin-top: 12px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

.page-about .about-team__flow {
  padding: 18px 16px 20px;
  border: 1px dashed var(--grid-line);
  background: rgba(0, 229, 195, 0.04);
}

.page-about .about-team__flow-title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .about-team__svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- N-03 内容生产 ---------- */
.page-about .about-craft__layout {
  display: grid;
  gap: 26px;
  margin-top: 32px;
}

.page-about .about-craft__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--ink-line);
  border: 1px solid var(--ink-line);
}

.page-about .about-craft__item {
  padding: 20px 18px;
  background: var(--ink);
}

.page-about .about-craft__tag {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-craft__name {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}

.page-about .about-craft__item p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-about .about-craft__board {
  position: relative;
  padding: 24px 20px 26px;
  background: linear-gradient(160deg, var(--ink-mid), var(--ink-deep));
  border: 1px solid var(--cyan);
  box-shadow: var(--shadow-hard);
}

.page-about .about-craft__board-kicker {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan-soft);
}

.page-about .about-craft__board-num {
  margin: 10px 0 0;
  font-size: 58px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-craft__board-lab {
  margin: 6px 0 18px;
  font-size: 13px;
  color: var(--text-dim);
}

.page-about .about-craft__board-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-craft__board-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-about .about-craft__board-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--orange);
}

.page-about .about-craft__board-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--ink-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- N-04 合作 ---------- */
.page-about .about-partners {
  background: var(--paper);
  color: var(--ink);
}

.page-about .about-partners .section__num {
  color: var(--orange);
}

.page-about .about-partners .section__lead {
  color: #3E6E5E;
}

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

.page-about .about-partners__figure {
  margin: 0;
}

.page-about .about-partners__figure .media {
  overflow: hidden;
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 rgba(11, 61, 46, 0.18);
  clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
  aspect-ratio: 4 / 3;
}

.page-about .about-partners__figure .media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-partners__caption {
  display: block;
  margin-top: 12px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: #4E7C6B;
}

.page-about .about-partners__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 20px;
}

.page-about .about-partners__list li {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 14px;
  align-items: start;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(11, 61, 46, 0.16);
}

.page-about .about-partners__list li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-about .about-partners__num {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--orange);
  letter-spacing: 0.02em;
}

.page-about .about-partners__list h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-partners__list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: #3E6E5E;
}

/* ---------- N-05 版本 ---------- */
.page-about .about-release__grid {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.page-about .about-release__card {
  padding: 22px 20px 24px;
  background: var(--ink-mid);
  border: 1px solid var(--ink-line);
  border-left: 4px solid var(--cyan);
}

.page-about .about-release__card--accent {
  border-left-color: var(--orange);
}

.page-about .about-release__kicker {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan-soft);
}

.page-about .about-release__name {
  margin: 10px 0 10px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
}

.page-about .about-release__card p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-about .about-release__link {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan);
  padding-bottom: 2px;
}

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

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  display: grid;
  gap: 20px;
  margin-top: 40px;
  padding: 26px 20px;
  background: linear-gradient(120deg, var(--ink-deep), var(--ink-mid));
  border: 1px solid var(--grid-line);
  border-top: 3px solid var(--orange);
}

.page-about .about-cta__title {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 0.02em;
}

.page-about .about-cta__text p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
  max-width: 56ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta__actions .btn {
  flex: 1 1 auto;
  min-width: 150px;
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero {
    padding: 44px var(--pad) 72px;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .about-hero__num {
    font-size: 30px;
  }

  .page-about .section {
    padding: 68px 0;
  }

  .page-about .about-team__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .page-about .about-team__split {
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: 26px;
  }

  .page-about .about-craft__layout {
    grid-template-columns: 1.35fr 1fr;
    align-items: start;
    gap: 28px;
  }

  .page-about .about-partners__layout {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
    gap: 32px;
  }

  .page-about .about-release__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  .page-about .about-cta {
    grid-template-columns: 1.4fr 1fr;
    align-items: center;
    padding: 32px 30px;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }

  .page-about .about-cta__actions .btn {
    flex: 0 0 auto;
  }
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 1040px) {
  .page-about .about-top {
    padding-top: calc(var(--about-top-gap) - 10px);
  }

  .page-about .about-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 56px;
  }

  .page-about .about-hero__figure {
    margin-top: 24px;
  }

  .page-about .about-line__list {
    padding-left: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0 40px;
    margin-top: 44px;
  }

  .page-about .about-line__list::before {
    left: 50%;
    top: 4px;
    bottom: 10px;
    transform: translateX(-50%);
  }

  .page-about .about-line__item {
    padding: 0 0 44px;
    min-height: 100%;
  }

  .page-about .about-line__item:nth-child(odd) {
    padding-right: 48px;
    text-align: right;
  }

  .page-about .about-line__item:nth-child(even) {
    padding-left: 48px;
  }

  .page-about .about-line__item:nth-child(odd)::before {
    left: auto;
    right: -7px;
  }

  .page-about .about-line__item:nth-child(even)::before {
    left: -7px;
  }

  .page-about .about-line__panel p {
    margin-left: auto;
  }

  .page-about .about-line__item:nth-child(even) .about-line__panel p {
    margin-left: 0;
  }

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

  .page-about .about-craft__layout {
    grid-template-columns: 1.5fr 1fr;
    gap: 36px;
  }

  .page-about .about-partners__layout {
    grid-template-columns: 1fr 1fr;
    gap: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
  }
}
<<<END>>>