.page-about {
  --about-bd: 2px solid var(--ink-700);
  --about-shadow: 8px 8px 0 var(--ink-950);
  --about-soft-shadow: 6px 6px 0 var(--ink-950);
  --about-wash: linear-gradient(155deg, rgba(59, 240, 200, .13), rgba(7, 22, 15, 0) 58%);
  background: var(--ink-900);
  color: var(--mist-100);
  overflow-x: clip;
}

.page-about p {
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.9;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  padding-top: clamp(14px, 2.4vw, 26px);
}

.page-about .about-hero__frame {
  position: relative;
  border: var(--about-bd);
  box-shadow: var(--about-shadow);
  background: var(--about-wash), var(--ink-800);
  padding: clamp(28px, 5.2vw, 78px) clamp(20px, 4.6vw, 68px) clamp(30px, 4.6vw, 60px);
}

.page-about .about-hero__ticks {
  display: block;
  position: absolute;
  inset: 0 0 auto 0;
  height: 16px;
  border-bottom: 1px solid var(--ink-700);
  background-image: repeating-linear-gradient(to right, var(--cyan-400) 0 2px, transparent 2px 64px);
  background-size: 100% 7px;
  background-repeat: no-repeat;
  background-position: bottom left;
  opacity: .6;
}

.page-about .about-hero__eyebrow {
  position: relative;
  margin-top: 10px;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(31px, 6.4vw, 70px);
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--mist-100);
  max-width: 20ch;
}

.page-about .about-hero__lede {
  margin-top: clamp(16px, 2.4vw, 26px);
  max-width: 62ch;
  font-size: clamp(16px, 1.5vw, 18px);
  color: var(--mist-100);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: clamp(26px, 4vw, 46px) 0 0;
  border-top: var(--about-bd);
  border-left: var(--about-bd);
}

.page-about .about-hero__stats dt,
.page-about .about-hero__stats dd {
  margin: 0;
}

.page-about .about-stat {
  padding: clamp(14px, 2.2vw, 22px) clamp(12px, 2vw, 20px);
  border-right: var(--about-bd);
  border-bottom: var(--about-bd);
  background: rgba(3, 16, 11, .35);
}

.page-about .about-stat__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--mist-400);
}

.page-about .about-stat__value {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1;
  color: var(--cyan-200);
}

.page-about .about-stat__value small {
  margin-left: 6px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mist-400);
}

/* ---------- 起点 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-about .about-origin__main p {
  margin-top: 18px;
  max-width: 68ch;
  font-size: 17px;
}

.page-about .about-origin__aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .about-note {
  border-left: 3px solid var(--cyan-400);
  padding-left: 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.85;
  letter-spacing: .05em;
  color: var(--mist-400);
}

/* ---------- 刻度分隔条 ---------- */
.page-about .about-ruler {
  position: relative;
  height: 34px;
  margin: clamp(38px, 6vw, 76px) 0;
  border-top: var(--about-bd);
  background-image: repeating-linear-gradient(to right, var(--ink-700) 0 2px, transparent 2px 44px);
  background-size: 100% 11px;
  background-repeat: no-repeat;
  background-position: top left;
}

.page-about .about-ruler__label {
  position: absolute;
  right: clamp(18px, 4vw, 52px);
  top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--mist-400);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  margin-top: clamp(24px, 3.4vw, 40px);
}

.page-about .about-squad {
  display: grid;
  gap: 14px;
}

.page-about .about-squad__item {
  border: var(--about-bd);
  background: var(--ink-800);
  box-shadow: var(--about-soft-shadow);
  padding: clamp(18px, 2.4vw, 24px);
}

.page-about .about-squad__id {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--cyan-400);
}

.page-about .about-squad__name {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--mist-100);
}

.page-about .about-squad__count {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3vw, 32px);
  line-height: 1;
  color: var(--cyan-200);
}

.page-about .about-squad__count small {
  margin-left: 5px;
  font-size: 12.5px;
  color: var(--mist-400);
  letter-spacing: .08em;
}

.page-about .about-squad__desc {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-100);
}

.page-about .about-figure {
  position: relative;
  margin: 0;
  border: var(--about-bd);
  box-shadow: var(--about-soft-shadow);
  background: var(--ink-800);
  overflow: hidden;
}

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

.page-about .about-team__media img {
  aspect-ratio: 3 / 2;
}

/* ---------- 流程 ---------- */
.page-about .about-flow .shell,
.page-about .about-reasons .shell {
  max-width: 1040px;
}

.page-about .about-flow__list {
  list-style: none;
  margin: clamp(24px, 3.4vw, 42px) 0 0;
  padding: 0;
  border-top: var(--about-bd);
}

.page-about .about-flow__step {
  display: grid;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--ink-700);
}

.page-about .about-flow__time {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--cyan-400);
}

.page-about .about-flow__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--mist-100);
}

.page-about .about-flow__desc {
  margin-top: 8px;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist-100);
}

/* ---------- 覆盖 ---------- */
.page-about .about-coverage__grid {
  display: grid;
  gap: clamp(26px, 4vw, 50px);
  margin-top: clamp(24px, 3.4vw, 40px);
}

.page-about .about-boards {
  display: grid;
  gap: 2px;
}

.page-about .about-board {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 18px;
  row-gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--ink-700);
}

.page-about .about-board:last-child {
  border-bottom: 1px solid var(--ink-700);
}

.page-about .about-board__num {
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1.1;
  color: var(--cyan-200);
}

.page-about .about-board__title {
  margin: 0;
  align-self: center;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--mist-100);
}

.page-about .about-board__desc {
  grid-column: 2;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-400);
}

.page-about .about-topics__title {
  margin: clamp(26px, 3.4vw, 38px) 0 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--mist-100);
}

.page-about .about-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-topic {
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--cyan-400);
  background: var(--ink-800);
  padding: 8px 13px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--cyan-200);
}

.page-about .about-coverage__media img {
  aspect-ratio: 8 / 5;
}

/* ---------- 历程 ---------- */
.page-about .about-era__media {
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-era__media img {
  aspect-ratio: 2 / 1;
}

.page-about .about-era__grid {
  display: grid;
  gap: clamp(20px, 2.6vw, 30px);
  margin-top: clamp(30px, 4.4vw, 56px);
}

.page-about .about-era__item {
  position: relative;
  padding-top: 22px;
  border-top: 2px solid var(--ink-700);
}

.page-about .about-era__item::before {
  content: "";
  position: absolute;
  top: -7px;
  left: 0;
  width: 12px;
  height: 12px;
  background: var(--cyan-400);
}

.page-about .about-era__year {
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: .05em;
  color: var(--amber-500);
}

.page-about .about-era__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--mist-100);
}

.page-about .about-era__desc {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-400);
}

/* ---------- 支持 ---------- */
.page-about .about-support__box {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
  border: var(--about-bd);
  box-shadow: var(--about-shadow);
  background: linear-gradient(120deg, rgba(59, 240, 200, .09), rgba(7, 22, 15, 0) 62%), var(--ink-800);
  padding: clamp(24px, 4vw, 52px);
}

.page-about .about-support__col p {
  margin-top: 16px;
  max-width: 62ch;
}

.page-about .about-support__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.page-about .about-support__link {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-700);
  padding-bottom: 2px;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-about .about-support__link:hover,
.page-about .about-support__link:focus-visible {
  color: var(--cyan-200);
  border-color: var(--cyan-400);
}

.page-about .about-contact {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ink-700);
}

.page-about .about-contact__row {
  display: grid;
  gap: 4px;
  padding: 15px 0;
  border-bottom: 1px solid var(--ink-700);
}

.page-about .about-contact__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--mist-400);
}

.page-about .about-contact__value {
  font-family: var(--font-mono);
  font-size: 14.5px;
  letter-spacing: .02em;
  color: var(--cyan-200);
  word-break: break-word;
}

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

/* ---------- 留下的理由 ---------- */
.page-about .about-reasons__grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 3.4vw, 40px);
}

.page-about .about-reason {
  border: var(--about-bd);
  background: var(--ink-800);
  box-shadow: var(--about-soft-shadow);
  padding: clamp(20px, 2.6vw, 28px);
}

.page-about .about-reason__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--cyan-400);
}

.page-about .about-reason__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--mist-100);
}

.page-about .about-reason__desc {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-400);
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(26px, 3.4vw, 42px);
  padding-top: clamp(22px, 3vw, 34px);
  border-top: var(--about-bd);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 820px) {
  .page-about .about-flow__step {
    grid-template-columns: 170px minmax(0, 1fr);
    column-gap: clamp(20px, 3vw, 42px);
    align-items: start;
  }

  .page-about .about-flow__time {
    padding-top: 3px;
  }
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, .78fr);
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }

  .page-about .about-coverage__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

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

  .page-about .about-support__box {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }
}

@media (min-width: 1080px) {
  .page-about .about-contact__row {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: baseline;
    column-gap: 16px;
  }
}
<<<END>>>