.page-about {
  --about-line: rgba(199, 208, 204, .24);
  --about-paper-ink: #15241D;
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(20px, 4vw, 36px) 0 clamp(36px, 6vw, 72px);
  background:
    radial-gradient(720px 380px at 88% -10%, rgba(215, 255, 63, .16), transparent 70%),
    radial-gradient(600px 340px at -5% 110%, rgba(31, 107, 69, .5), transparent 72%),
    linear-gradient(180deg, var(--night), var(--ink) 64%);
  border-bottom: var(--rule) solid var(--grass);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(199, 208, 204, .07) 0 1px, transparent 1px 72px);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}

.page-about .about-hero__kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 14px 0 16px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--steel);
  text-transform: uppercase;
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 8vw, 4.3rem);
  line-height: .98;
  letter-spacing: .01em;
  color: var(--mist);
  text-wrap: balance;
}

.page-about .about-hero__text {
  margin: 0;
  max-width: 52ch;
  font-size: clamp(.98rem, 2.4vw, 1.08rem);
  line-height: 1.75;
  color: var(--steel);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(22px, 4vw, 32px) 0 0;
  padding: 1px;
  background: var(--about-line);
  border: var(--rule) solid var(--about-line);
}

.page-about .about-stats > div {
  background: var(--ink-soft);
  padding: 13px 15px;
}

.page-about .about-stats dt {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--steel);
  text-transform: uppercase;
}

.page-about .about-stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.05rem, 3.4vw, 1.5rem);
  color: var(--lime);
  line-height: 1.15;
}

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

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 3px solid var(--grass);
  box-shadow: var(--shadow-hard);
  background: var(--night);
}

.page-about .about-hero__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--steel);
  border-left: 3px solid var(--lime);
  padding-left: 10px;
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body {
  padding: clamp(30px, 5vw, 64px) 0 clamp(40px, 6vw, 80px);
}

.page-about .about-body__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-index {
  border-left: 3px solid var(--grass);
  padding: 2px 0 2px 14px;
}

.page-about .about-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--steel);
  text-transform: uppercase;
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-index__link {
  display: block;
  padding: 7px 12px;
  border: 2px solid var(--about-line);
  color: var(--steel);
  text-decoration: none;
  font-size: .88rem;
  line-height: 1.4;
  white-space: nowrap;
  transition: color .18s ease, background-color .18s ease, border-color .18s ease;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
}

.page-about .about-index__link.is-active {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

.page-about .about-index__top {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--steel);
  text-decoration: none;
  border-bottom: 2px solid var(--about-line);
  padding-bottom: 3px;
}

.page-about .about-index__top:hover,
.page-about .about-index__top:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
}

.page-about .about-flow {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  min-width: 0;
}

.page-about .about-block {
  padding-top: clamp(24px, 4vw, 40px);
  border-top: var(--rule) solid var(--about-line);
  min-width: 0;
}

.page-about .about-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-block__head {
  margin-bottom: clamp(14px, 2.4vw, 20px);
}

.page-about .about-block__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--grass);
  text-transform: uppercase;
}

.page-about .about-block__kicker .num {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--lime);
  background: var(--moss);
  border: 2px solid var(--grass);
  padding: 2px 8px;
  line-height: 1.2;
}

.page-about .about-block h2 {
  margin: 0;
  color: var(--mist);
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.6vw, 2.4rem);
  line-height: 1.12;
  font-weight: 800;
  text-wrap: balance;
}

.page-about .about-block__lead {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: .96rem;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-block__lead:last-child {
  margin-bottom: 0;
}

.page-about .about-tagrow {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
}

/* ---------- 时间轴 ---------- */
.page-about .about-years {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.6vw, 22px);
  position: relative;
}

.page-about .about-year {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.page-about .about-year__stamp {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
}

.page-about .about-year__stamp .num {
  font-size: clamp(1.5rem, 5.6vw, 2.1rem);
  font-weight: 700;
  color: var(--lime);
  line-height: 1;
  letter-spacing: -.02em;
}

.page-about .about-year__phase {
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--steel);
  text-transform: uppercase;
}

.page-about .about-year__card {
  background: var(--paper);
  color: var(--about-paper-ink);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-soft);
  padding: clamp(14px, 2.6vw, 22px);
  min-width: 0;
}

.page-about .about-year__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 3.4vw, 1.3rem);
  line-height: 1.2;
  color: var(--ink);
}

.page-about .about-year__card p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.75;
  color: #2B3A32;
}

/* ---------- 内容与数据 ---------- */
.page-about .about-cap {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 20px 0;
}

.page-about .about-cap__item {
  display: grid;
  gap: 4px;
  padding: 14px 14px 16px;
  background: var(--ink-soft);
  border-left: 4px solid var(--lime);
  border-top: 2px solid var(--about-line);
  border-right: 2px solid var(--about-line);
  border-bottom: 2px solid var(--about-line);
}

.page-about .about-cap__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.4rem, 5vw, 2rem);
  color: var(--lime);
  line-height: 1;
}

.page-about .about-cap__label {
  font-size: .82rem;
  line-height: 1.5;
  color: var(--steel);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(16px, 3vw, 24px);
  margin-bottom: 18px;
}

.page-about .about-team__panel {
  background: var(--moss);
  border: 3px solid var(--grass);
  box-shadow: var(--shadow-soft);
  padding: clamp(14px, 2.6vw, 22px);
  min-width: 0;
}

.page-about .about-diagram {
  display: block;
  width: 100%;
  max-width: 340px;
  height: auto;
  margin: 0 auto 14px;
}

.page-about .about-role {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 2px solid var(--about-line);
}

.page-about .about-role li {
  display: grid;
  gap: 2px;
  padding: 10px 12px;
  background: var(--ink-soft);
}

.page-about .about-role__name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--lime);
  letter-spacing: .02em;
}

.page-about .about-role__desc {
  font-size: .82rem;
  line-height: 1.5;
  color: var(--steel);
}

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 3px solid var(--grass);
  box-shadow: var(--shadow-hard);
  background: var(--night);
}

.page-about .about-team__figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--steel);
}

/* ---------- 本地网络 ---------- */
.page-about .about-network__figure {
  margin: 0 0 clamp(16px, 3vw, 24px);
}

.page-about .about-network__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 3px solid var(--grass);
  box-shadow: var(--shadow-hard);
  background: var(--night);
}

.page-about .about-network__figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--steel);
}

.page-about .about-network__notes {
  display: grid;
  gap: 10px;
}

.page-about .about-note {
  padding: 14px 16px;
  border: 2px solid var(--about-line);
  border-left: 4px solid var(--grass);
  background: linear-gradient(180deg, rgba(22, 53, 42, .55), rgba(11, 31, 26, .2));
}

.page-about .about-note h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--mist);
  letter-spacing: .02em;
}

.page-about .about-note p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 下一步 ---------- */
.page-about .about-block--next .about-next {
  margin-top: 18px;
  padding: clamp(16px, 3vw, 26px);
  background: var(--night);
  border: 3px solid var(--lime);
  box-shadow: var(--shadow-hard);
}

.page-about .about-next__list {
  margin: 0 0 18px;
  padding: 0 0 0 18px;
  display: grid;
  gap: 10px;
  color: var(--steel);
  font-size: .92rem;
  line-height: 1.75;
}

.page-about .about-next__list li::marker {
  color: var(--lime);
  font-family: var(--font-mono);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.page-about .about-next__contact {
  margin: 0;
  font-size: .86rem;
  line-height: 1.7;
  color: var(--steel);
  border-top: 2px solid var(--about-line);
  padding-top: 14px;
}

.page-about .about-next__contact a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 2px solid var(--grass);
  word-break: break-all;
}

.page-about .about-next__contact a:hover,
.page-about .about-next__contact a:focus-visible {
  border-color: var(--lime);
}

.page-about .about-next__top {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--steel);
  text-decoration: none;
  border-bottom: 2px solid var(--about-line);
  padding-bottom: 3px;
}

.page-about .about-next__top:hover,
.page-about .about-next__top:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
}

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-about .about-cap {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-years::before {
    content: "";
    position: absolute;
    left: 148px;
    top: 10px;
    bottom: 10px;
    width: 3px;
    background: linear-gradient(180deg, var(--grass), rgba(31, 107, 69, .1));
  }

  .page-about .about-year {
    grid-template-columns: 136px minmax(0, 1fr);
    gap: clamp(18px, 3vw, 30px);
    align-items: start;
  }

  .page-about .about-year__stamp {
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
    text-align: right;
    position: relative;
    padding-right: 18px;
  }

  .page-about .about-year__stamp::after {
    content: "";
    position: absolute;
    right: -9px;
    top: 14px;
    width: 14px;
    height: 14px;
    background: var(--lime);
    border: 3px solid var(--ink);
    transform: rotate(45deg);
  }

  .page-about .about-year__card {
    padding: 20px 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.06fr .94fr;
  }
}

@media (min-width: 960px) {
  .page-about .about-body__grid {
    grid-template-columns: 210px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    align-self: start;
  }

  .page-about .about-index__list {
    grid-auto-flow: row;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }

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

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