.page-about {
  --ab-line: var(--line);
  --ab-tight: 20px;
  overflow-x: clip;
}

.page-about .breadcrumb {
  padding: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--lime);
}

.page-about .breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  color: var(--red-bright);
}

.page-about .breadcrumb span[aria-current="page"] {
  color: var(--green-deep);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 28px 0 0;
  background-image:
    linear-gradient(to right, rgba(11, 46, 36, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(11, 46, 36, .055) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: -1px -1px;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-bottom: 32px;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-weight: 200;
  letter-spacing: -.02em;
  line-height: .98;
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 42ch;
  color: var(--ink-soft);
}

.page-about .about-hero__sub {
  margin: 14px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.55;
  color: var(--lime);
  border-left: 2px solid var(--cyan);
  padding-left: 12px;
}

.page-about .about-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-about .about-hero__visual {
  position: relative;
  border: 1px solid var(--ab-line);
  background: var(--green-deep);
}

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.75);
}

.page-about .about-hero__coord {
  position: absolute;
  right: 0;
  bottom: 0;
  padding: 5px 10px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--green-deep);
  background: var(--cyan);
}

/* ---------- 数据条 ---------- */

.page-about .about-stats {
  list-style: none;
  margin: 0 0 40px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--ab-line);
  border-left: 1px solid var(--ab-line);
}

.page-about .about-stats__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 14px;
  border-right: 1px solid var(--ab-line);
  border-bottom: 1px solid var(--ab-line);
}

.page-about .about-stats__n {
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -.01em;
}

.page-about .about-stats__u {
  font-size: 14px;
  font-weight: 500;
  margin-left: 2px;
  color: var(--teal-ink);
}

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

/* ---------- 通用小块 ---------- */

.page-about .about-index {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--lime);
}

.page-about .about-index::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--red-score);
}

.page-about .about-index--dark {
  color: var(--cyan);
}

.page-about .about-index--dark::before {
  background: var(--cyan);
}

.page-about .about-h2 {
  margin: 12px 0 0;
  font-size: clamp(24px, 4.6vw, 40px);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -.015em;
  color: var(--ink);
}

.page-about .about-h2--dark {
  color: var(--white-cold);
}

.page-about .about-intro {
  margin: 14px 0 0;
  max-width: 62ch;
  color: var(--ink-soft);
}

.page-about .about-side-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--lime);
}

/* ---------- 01 起源 ---------- */

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding-top: 8px;
  padding-bottom: 8px;
}

.page-about .about-origin__body p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.62;
  color: var(--ink-soft);
}

.page-about .about-origin__body p:first-child {
  color: var(--ink);
  font-weight: 500;
}

.page-about .about-origin__body p:last-child {
  margin-bottom: 0;
  padding-left: 14px;
  border-left: 2px solid var(--red-score);
  color: var(--green-deep);
}

/* ---------- 02 团队 ---------- */

.page-about .about-team {
  background: var(--white-paper);
  border-top: 1px solid var(--ab-line);
  border-bottom: 1px solid var(--ab-line);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .about-team__fig {
  margin: 0;
  border: 1px solid var(--ab-line);
}

.page-about .about-team__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 11;
  object-fit: cover;
  filter: saturate(.7);
}

.page-about .about-team__cap {
  display: block;
  padding: 8px 10px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--lime);
  border-top: 1px solid var(--ab-line);
}

.page-about .about-team__body > p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.62;
  color: var(--ink-soft);
}

.page-about .about-roster {
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--ab-line);
}

.page-about .about-roster__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--ab-line);
}

.page-about .about-roster__row dt {
  font-size: 14px;
  color: var(--ink-soft);
}

.page-about .about-roster__row dd {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--green-deep);
}

.page-about .about-roster__row:first-child dd,
.page-about .about-roster__row:nth-child(4) dd {
  color: var(--red-score);
}

.page-about .about-team__link {
  margin: 18px 0 0;
  font-size: 14px;
}

.page-about .about-team__link a {
  color: var(--green-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan);
  padding-bottom: 2px;
}

.page-about .about-team__link a:hover {
  color: var(--red-bright);
  border-bottom-color: var(--red-bright);
}

/* ---------- 03 三条内容线 ---------- */

.page-about .about-lines__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-line {
  padding: 20px 0;
  border-top: 1px solid var(--ab-line);
}

.page-about .about-line:last-child {
  border-bottom: 1px solid var(--ab-line);
}

.page-about .about-line__num {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--green-deep);
  background: var(--cyan);
  padding: 3px 8px;
}

.page-about .about-line__h {
  margin: 12px 0 0;
  font-size: 21px;
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-line p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.58;
  color: var(--ink-soft);
}

.page-about .about-line__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--lime);
}

/* ---------- 04 收录 ---------- */

.page-about .about-collect__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .about-collect__body p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.62;
  color: var(--ink-soft);
}

.page-about .about-collect__body p:last-child {
  margin-bottom: 0;
  padding: 16px 18px;
  background: var(--green-field);
  color: var(--white-cold);
  font-size: 15px;
  line-height: 1.6;
}

/* ---------- 05 版本时间线 ---------- */

.page-about .about-timeline {
  background: var(--white-cold);
  border-top: 1px solid var(--ab-line);
}

.page-about .about-tl {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 14px;
  width: 1px;
  background: var(--ab-line);
}

.page-about .about-tl__item {
  position: relative;
  padding-left: 32px;
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 17px;
  height: 17px;
  background: var(--white-cold);
  border: 1px solid var(--green-field);
  z-index: 1;
}

.page-about .about-tl__item:nth-child(3n)::before {
  background: var(--cyan);
  border-color: var(--green-field);
}

.page-about .about-tl__item:last-child::before {
  background: var(--red-score);
  border-color: var(--red-score);
}

.page-about .about-tl__fold {
  border-bottom: 1px solid var(--ab-line);
}

.page-about .about-tl__sum {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 26px 14px 0;
  position: relative;
  cursor: pointer;
  list-style: none;
}

.page-about .about-tl__sum::-webkit-details-marker {
  display: none;
}

.page-about .about-tl__sum::after {
  content: "+";
  position: absolute;
  right: 2px;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--lime);
}

.page-about .about-tl__fold[open] .about-tl__sum::after {
  content: "–";
  color: var(--red-score);
}

.page-about .about-tl__ver {
  flex: none;
  min-width: 46px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--green-deep);
}

.page-about .about-tl__item:last-child .about-tl__ver {
  color: var(--red-score);
}

.page-about .about-tl__name {
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-tl__body {
  margin: 0;
  padding: 0 26px 16px 58px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.page-about .about-tl__sum:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 06 覆盖网络 ---------- */

.page-about .about-network {
  background: var(--green-deep);
  color: var(--white-cold);
  padding: 52px 0 0;
}

.page-about .about-network__inner {
  padding-bottom: 34px;
}

.page-about .about-network__lede {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.6;
  color: rgba(244, 247, 245, .78);
}

.page-about .about-network__cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: 28px;
  border-top: 1px solid rgba(56, 225, 200, .32);
}

.page-about .about-network__col {
  padding: 20px 0;
  border-bottom: 1px solid rgba(56, 225, 200, .32);
}

.page-about .about-network__n {
  display: block;
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-network__h {
  margin: 10px 0 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--white-cold);
}

.page-about .about-network__col p {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: rgba(244, 247, 245, .7);
}

.page-about .about-network__fig {
  border-top: 1px solid rgba(56, 225, 200, .32);
}

.page-about .about-network__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  filter: saturate(.5) brightness(.85);
}

/* ---------- 07 接下来 ---------- */

.page-about .about-next__cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: 26px;
}

.page-about .about-next__col {
  padding: 22px 0;
  border-top: 1px solid var(--ab-line);
}

.page-about .about-next__col:last-child {
  border-bottom: 1px solid var(--ab-line);
}

.page-about .about-next__tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--green-deep);
  border: 1px solid var(--green-field);
  padding: 3px 9px;
}

.page-about .about-next__col h3 {
  margin: 14px 0 0;
  font-size: 20px;
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-next__col p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ---------- 行动区 ---------- */

.page-about .about-cta {
  background: var(--ink);
  color: var(--white-cold);
}

.page-about .about-cta__inner {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding-top: 44px;
  padding-bottom: 44px;
}

.page-about .about-cta__h {
  margin: 0;
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 300;
  letter-spacing: -.015em;
  color: var(--white-cold);
}

.page-about .about-cta__p {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.6;
  color: rgba(244, 247, 245, .72);
}

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

.page-about .about-cta .btn--ghost {
  border-color: rgba(244, 247, 245, .42);
  color: var(--white-cold);
}

/* ---------- 中屏 ---------- */

@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

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

  .page-about .about-line {
    padding: 22px 22px 22px 0;
    border-top: 1px solid var(--ab-line);
    border-left: 1px solid var(--ab-line);
    border-bottom: 1px solid var(--ab-line);
  }

  .page-about .about-line:first-child {
    border-left: 0;
  }

  .page-about .about-line:not(:first-child) {
    padding-left: 22px;
  }

  .page-about .about-network__cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 1px solid rgba(56, 225, 200, .32);
  }

  .page-about .about-network__col {
    padding: 22px 22px 22px 0;
    border-bottom: 0;
    border-left: 1px solid rgba(56, 225, 200, .32);
  }

  .page-about .about-network__col:first-child {
    border-left: 0;
  }

  .page-about .about-network__col:not(:first-child) {
    padding-left: 22px;
  }

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

  .page-about .about-next__col {
    padding: 24px 24px 24px 0;
  }

  .page-about .about-next__col:last-child {
    border-bottom: 1px solid var(--ab-line);
    border-left: 1px solid var(--ab-line);
    padding-left: 24px;
  }

  .page-about .about-cta__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 1000px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: end;
    gap: 52px;
    padding-bottom: 44px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-origin__side {
    position: sticky;
    top: 96px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-collect__grid {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-collect__body {
    max-width: 720px;
  }

  .page-about .about-tl__body {
    max-width: 68ch;
  }

  .page-about .about-team__body > p {
    max-width: 62ch;
  }
}

@media (min-width: 1280px) {
  .page-about .about-tl {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 56px;
  }

  .page-about .about-tl::before {
    left: 8px;
    bottom: 4px;
  }
}

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