.page-about {
  --about-gap: clamp(1.5rem, 3vw, 2.75rem);
  --about-pad: clamp(2.5rem, 6vw, 4.5rem);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(1rem, 2vw, 1.5rem) 0 var(--about-pad);
  background:
    radial-gradient(110% 85% at 88% -10%, rgba(199, 255, 61, 0.14), transparent 62%),
    linear-gradient(168deg, var(--ink) 0%, var(--moss) 100%);
  border-bottom: 2px solid var(--line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, rgba(244, 241, 232, 0.05) 0 1px, transparent 1px 16px);
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--about-gap);
  margin-top: 1.25rem;
}

.page-about .about-hero__rail {
  position: relative;
  display: grid;
  gap: 1rem;
  padding: 1rem 1.05rem;
  border: 2px solid var(--line);
  background: rgba(7, 21, 16, 0.62);
  box-shadow: var(--shadow-sm);
}

.page-about .about-rail__note {
  color: var(--lime);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  line-height: 1;
}

.page-about .about-rail__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
  margin: 0;
  padding: 0.7rem 0;
  border-top: 2px solid var(--line-soft);
  border-bottom: 2px solid var(--line-soft);
}

.page-about .about-rail__facts dt {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--stone);
}

.page-about .about-rail__facts dd {
  margin: 0.25rem 0 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--lime-soft);
  white-space: nowrap;
}

.page-about .about-toc {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
  scrollbar-width: thin;
}

.page-about .about-toc__title {
  display: none;
  margin: 0 0 0.3rem;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--stone);
}

.page-about .about-toc a {
  flex: 0 0 auto;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line-soft);
  color: var(--paper);
  font-size: 0.82rem;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

.page-about .about-toc a[aria-current="true"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

.page-about .about-kicker {
  margin: 0 0 0.75rem;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--sage);
}

.page-about .about-hero__title {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 6.4vw, 4.2rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-shadow: 4px 4px 0 rgba(0, 0, 0, 0.45);
}

.page-about .about-lede {
  max-width: 44rem;
  margin: 0 0 1.5rem;
  padding-left: 1rem;
  border-left: 3px solid var(--lime);
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.86);
}

.page-about .about-hero__figure {
  margin: 0 0 1.25rem;
  overflow: hidden;
  border: 2px solid var(--line);
  background: var(--char);
  box-shadow: var(--shadow);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 260ms var(--ease);
}

.page-about .about-hero__figure:hover img {
  transform: scale(1.03);
}

.page-about .about-hero__figure .media-frame__cap {
  margin: 0;
  padding: 0.55rem 0.85rem;
  border-top: 2px solid var(--line);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--stone);
  background: rgba(7, 21, 16, 0.9);
}

.page-about .about-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ---------- 看台视角的由来 ---------- */
.page-about .about-origin {
  padding: var(--about-pad) 0;
  background: var(--ink);
  border-bottom: 2px solid var(--line-soft);
}

.page-about .about-origin__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

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

.page-about .about-origin__figure .media-frame {
  overflow: hidden;
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
}

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

.page-about .about-origin__cap {
  margin: 0.6rem 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--stone);
}

.page-about .about-origin__body h2 {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.015em;
}

.page-about .about-origin__body p {
  margin: 0 0 0.9rem;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.82);
}

.page-about .about-points {
  display: grid;
  gap: 0.7rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-points li {
  padding: 0.85rem 1rem;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  border-left: 3px solid var(--lime);
  background: var(--ink-2);
}

.page-about .about-points b {
  display: block;
  margin-bottom: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--lime-soft);
}

.page-about .about-points span {
  display: block;
  font-size: 0.94rem;
  line-height: 1.75;
  color: rgba(244, 241, 232, 0.84);
}

/* ---------- 能帮上什么 ---------- */
.page-about .about-story {
  padding: var(--about-pad) 0;
  background: linear-gradient(180deg, var(--moss) 0%, var(--ink) 100%);
  border-bottom: 2px solid var(--line);
}

.page-about .about-story__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-story__note {
  display: block;
  margin-bottom: 0.75rem;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--lime);
  line-height: 1;
}

.page-about .about-story__aside h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  line-height: 1.16;
  letter-spacing: -0.015em;
}

.page-about .about-story__intro {
  margin: 0 0 1.2rem;
  font-size: 0.98rem;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.78);
}

.page-about .about-story__list {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-story__item {
  padding: 1.1rem 1.15rem;
  border: 2px solid var(--line-soft);
  background: var(--char);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-story__item:hover {
  transform: translateY(-4px);
  border-color: var(--lime);
  box-shadow: var(--shadow);
}

.page-about .about-story__num {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-about .about-story__item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.12rem;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-story__item p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: rgba(244, 241, 232, 0.78);
}

/* ---------- 版本演进 ---------- */
.page-about .about-timeline {
  padding: var(--about-pad) 0;
  background: var(--ink);
  border-bottom: 2px solid var(--line);
}

.page-about .about-timeline__line {
  display: block;
  width: 100%;
  height: 40px;
  margin: 1.25rem 0 1.5rem;
  color: var(--sage);
}

.page-about .tl {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 1.75rem 2.1rem;
  border-left: 2px solid rgba(199, 255, 61, 0.24);
}

.page-about .tl__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 0.3rem;
  width: 14px;
  height: 14px;
  background: var(--ink);
  border: 2px solid var(--lime);
  transform: rotate(45deg);
  transition: background var(--dur) var(--ease);
}

.page-about .tl__item:hover::before {
  background: var(--lime);
}

.page-about .tl__years {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-about .tl__title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.45rem;
  font-size: 1.06rem;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .tl__ver {
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--line);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--lime-soft);
  white-space: nowrap;
}

.page-about .tl__text {
  max-width: 50rem;
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(244, 241, 232, 0.76);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: var(--about-pad) 0;
  background: var(--cream);
  color: var(--char);
  border-bottom: 2px solid var(--char);
}

.page-about .about-team .sec-head__title {
  color: var(--char);
}

.page-about .about-team .sec-head__note {
  color: rgba(25, 28, 25, 0.62);
}

.page-about .about-team__intro {
  max-width: 48rem;
  margin: 1rem 0 1.6rem;
  font-size: 0.98rem;
  line-height: 1.85;
  color: rgba(25, 28, 25, 0.78);
}

.page-about .about-team__grid {
  display: grid;
  gap: 1rem;
}

.page-about .about-team__card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 1.05rem 1.15rem;
  background: var(--paper);
  border: 2px solid var(--char);
  box-shadow: 6px 6px 0 rgba(25, 28, 25, 0.85);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-team__card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 var(--moss);
}

.page-about .about-team__tag {
  align-self: flex-start;
  padding: 0.22rem 0.75rem 0.22rem 0.6rem;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.page-about .about-team__card h3 {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.4;
  color: var(--char);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(25, 28, 25, 0.76);
}

.page-about .about-team__figure {
  margin: 1.75rem 0 0;
  border: 2px solid var(--char);
  background: var(--char);
  box-shadow: 8px 8px 0 rgba(25, 28, 25, 0.35);
  overflow: hidden;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 260ms var(--ease);
}

.page-about .about-team__figure:hover img {
  transform: scale(1.03);
}

.page-about .about-team__figure .media-frame__cap {
  margin: 0;
  padding: 0.55rem 0.85rem;
  border-top: 2px solid var(--char);
  background: var(--paper);
  color: rgba(25, 28, 25, 0.7);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

/* ---------- 校对与留痕 ---------- */
.page-about .about-quality {
  padding: var(--about-pad) 0;
  background: linear-gradient(180deg, var(--moss) 0%, var(--ink-2) 100%);
  border-bottom: 2px solid var(--line);
}

.page-about .about-quality__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-quality__lead h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.55rem, 3.4vw, 2.4rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
}

.page-about .about-quality__stat {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 4.2rem);
  line-height: 1;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-about .about-quality__stat span {
  margin-left: 0.35rem;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--stone);
}

.page-about .about-quality__caption {
  margin: 0.9rem 0 0;
  padding-top: 0.9rem;
  border-top: 2px solid var(--line-soft);
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(244, 241, 232, 0.76);
}

.page-about .about-steps {
  counter-reset: step;
  display: grid;
  gap: 0.8rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-steps li {
  position: relative;
  padding: 0.95rem 1rem 0.95rem 3rem;
  border: 2px solid var(--line-soft);
  background: rgba(25, 28, 25, 0.55);
}

.page-about .about-steps li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0.9rem;
  top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--lime);
}

.page-about .about-steps h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-steps p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(244, 241, 232, 0.76);
}

/* ---------- 服务覆盖 ---------- */
.page-about .about-coverage {
  padding: var(--about-pad) 0;
  background: var(--char);
  border-bottom: 2px solid var(--line);
}

.page-about .cover-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.page-about .cover-item {
  padding: 0.85rem 0.25rem 0.5rem;
  border-top: 3px solid var(--lime);
}

.page-about .cover-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.2vw, 2.3rem);
  line-height: 1.1;
  color: var(--lime-soft);
}

.page-about .cover-label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.86rem;
  line-height: 1.6;
  color: rgba(244, 241, 232, 0.72);
}

.page-about .about-coverage__note {
  margin-top: 1.6rem;
  padding-top: 1.2rem;
  border-top: 2px solid var(--line-soft);
}

.page-about .about-coverage__note p {
  max-width: 52rem;
  margin: 0 0 0.85rem;
  font-size: 0.96rem;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.78);
}

.page-about .about-inline-link {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-inline-link:hover {
  color: var(--lime-soft);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding: var(--about-pad) 0;
  background:
    radial-gradient(90% 120% at 10% 0%, rgba(199, 255, 61, 0.12), transparent 60%),
    linear-gradient(150deg, var(--ink) 0%, var(--moss) 100%);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 1.4rem;
  align-items: start;
}

.page-about .about-cta__inner h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
}

.page-about .about-cta__inner p {
  max-width: 46rem;
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.8);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-about .about-hero__rail {
    position: sticky;
    top: 6.5rem;
  }

  .page-about .about-toc {
    flex-direction: column;
    overflow-x: visible;
    gap: 0.4rem;
  }

  .page-about .about-toc__title {
    display: block;
  }

  .page-about .about-toc a {
    border: 0;
    border-left: 2px solid var(--line-soft);
    padding: 0.3rem 0 0.3rem 0.7rem;
    white-space: normal;
  }

  .page-about .about-toc a[aria-current="true"] {
    background: transparent;
    border-left-color: var(--lime);
    color: var(--lime);
    font-weight: 700;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(2rem, 4vw, 4rem);
  }

  .page-about .about-story__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-about .about-story__aside {
    position: sticky;
    top: 6.5rem;
    align-self: start;
  }

  .page-about .about-quality__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-about .about-timeline__line {
    height: 56px;
    margin: 1.5rem 0 2rem;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(1.5rem, 3vw, 3rem);
    align-items: center;
  }

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

@media (min-width: 1000px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__figure img,
  .page-about .about-team__figure img,
  .page-about .about-story__item,
  .page-about .about-team__card {
    transition: none;
  }

  .page-about .about-hero__figure:hover img,
  .page-about .about-team__figure:hover img,
  .page-about .about-story__item:hover,
  .page-about .about-team__card:hover {
    transform: none;
  }
}
<<<END>>>