.page-about {
  --ab-line: 1px solid rgba(233, 227, 211, .14);
  --ab-line-strong: 1px solid var(--moss);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

/* ---------- 首屏：陶土与苔绿斜切 ---------- */
.page-about .ab-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--hd-h) + 46px) 0 58px;
  background: var(--ink);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background: linear-gradient(150deg, rgba(180, 106, 79, .95) 0%, rgba(180, 106, 79, .55) 58%, rgba(180, 106, 79, 0) 82%);
  clip-path: polygon(0 0, 100% 0, 100% 36%, 0 66%);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    repeating-linear-gradient(90deg, rgba(199, 255, 61, .07) 0 1px, transparent 1px 82px),
    linear-gradient(202deg, var(--moss) 0%, var(--deep) 62%, var(--ink) 100%);
  clip-path: polygon(54% 0, 100% 0, 100% 100%, 20% 100%);
}

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

.page-about .ab-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 30px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .07em;
  color: rgba(233, 227, 211, .6);
}

.page-about .ab-crumbs__link {
  color: rgba(233, 227, 211, .8);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .ab-crumbs__link:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-about .ab-crumbs__sep {
  color: var(--lime);
}

.page-about .ab-crumbs__now {
  color: var(--paper);
}

.page-about .ab-hero__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(233, 227, 211, .85);
}

.page-about .ab-hero__idx {
  display: inline-block;
  padding: 2px 7px;
  background: var(--yellow);
  color: var(--ink);
  font-weight: 700;
  letter-spacing: .08em;
}

.page-about .ab-hero__title {
  margin: 0 0 22px;
  max-width: 16ch;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(38px, 8.4vw, 78px);
  line-height: .98;
  letter-spacing: -.015em;
}

.page-about .ab-hero__title em {
  font-style: normal;
  display: inline-block;
  color: var(--lime);
  padding-bottom: 2px;
  border-bottom: 4px solid rgba(199, 255, 61, .32);
}

.page-about .ab-hero__lede {
  max-width: 54ch;
  margin: 0 0 30px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(233, 227, 211, .88);
}

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

/* ---------- 印刷色带 ---------- */
.page-about .ab-band {
  height: 4px;
  background: linear-gradient(90deg, var(--lime) 0%, var(--yellow) 44%, var(--clay) 100%);
}

/* ---------- 通用区块 ---------- */
.page-about .ab-sec {
  position: relative;
  padding: 56px 0;
}

.page-about .ab-sec__head {
  max-width: 62ch;
  margin: 0 0 30px;
}

.page-about .ab-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .ab-kicker::before {
  content: "";
  flex: none;
  width: 26px;
  height: 2px;
  background: var(--lime);
}

.page-about .ab-title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .ab-lead {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(233, 227, 211, .82);
}

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

/* ---------- 图片框 ---------- */
.page-about .ab-figure {
  margin: 0;
}

.page-about .ab-frame {
  position: relative;
  overflow: hidden;
  border: var(--ab-line-strong);
  background: repeating-linear-gradient(135deg, rgba(49, 92, 76, .55) 0 8px, rgba(15, 42, 34, .7) 8px 16px);
}

.page-about .ab-frame--3x2 {
  aspect-ratio: 3 / 2;
}

.page-about .ab-frame--16x9 {
  aspect-ratio: 16 / 9;
}

.page-about .ab-frame--cut {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-about .ab-frame img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-about .ab-figure__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .07em;
  color: var(--stone);
}

/* ---------- 品牌起点 ---------- */
.page-about .ab-origin {
  background: var(--ink);
}

.page-about .ab-origin__grid {
  display: grid;
  gap: 30px;
}

.page-about .ab-origin__body p {
  margin: 0 0 16px;
  color: rgba(233, 227, 211, .84);
}

.page-about .ab-origin__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-tag {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid rgba(233, 227, 211, .28);
  background: rgba(11, 15, 13, .5);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(233, 227, 211, .86);
}

.page-about .ab-tag--lime {
  border-color: var(--lime);
  color: var(--lime);
}

.page-about .ab-tag--yellow {
  border-color: var(--yellow);
  color: var(--yellow);
}

.page-about .ab-tag--red {
  border-color: var(--red);
  color: var(--red);
}

/* ---------- 使命与价值观 ---------- */
.page-about .ab-mission {
  background: linear-gradient(180deg, var(--deep) 0%, var(--ink) 88%);
}

.page-about .ab-mission__frame {
  margin: 0 0 26px;
}

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

.page-about .ab-value {
  padding: 22px 20px 24px;
  border: var(--ab-line);
  border-left: 3px solid var(--moss);
  background: rgba(11, 15, 13, .55);
  transition: transform .22s var(--ease), border-color .22s var(--ease), background-color .22s var(--ease);
}

.page-about .ab-value:hover {
  transform: translateY(-2px);
  border-color: var(--moss);
  border-left-color: var(--lime);
  background: rgba(15, 42, 34, .78);
}

.page-about .ab-value__idx {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--yellow);
}

.page-about .ab-value__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 24px;
  line-height: 1.2;
  color: var(--paper);
}

.page-about .ab-value__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(233, 227, 211, .8);
}

/* ---------- 版本时间轴 ---------- */
.page-about .ab-tl {
  background: var(--ink);
}

.page-about .ab-tl__wrap {
  display: grid;
  gap: 26px;
}

.page-about .ab-tl__index {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.page-about .ab-tl__link {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid rgba(233, 227, 211, .2);
  background: rgba(15, 42, 34, .5);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: rgba(233, 227, 211, .82);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}

.page-about .ab-tl__link:hover,
.page-about .ab-tl__link:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
  background: rgba(199, 255, 61, .08);
}

.page-about .ab-tl__vnum {
  color: var(--yellow);
  font-weight: 700;
}

.page-about .ab-tl__list {
  position: relative;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-about .ab-tl__list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime) 0%, var(--moss) 62%, rgba(49, 92, 76, 0) 100%);
}

.page-about .ab-tl__item {
  position: relative;
  padding-bottom: 18px;
  scroll-margin-top: calc(var(--hd-h) + 26px);
}

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 20px;
  width: 10px;
  height: 10px;
  background: var(--ink);
  border: 2px solid var(--lime);
  transform: rotate(45deg);
  transition: background-color .2s var(--ease);
}

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

.page-about .ab-tl__card {
  padding: 18px 18px 16px;
  border: var(--ab-line);
  background: rgba(15, 42, 34, .55);
  transition: border-color .22s var(--ease), background-color .22s var(--ease);
}

.page-about .ab-tl__item:hover .ab-tl__card {
  border-color: var(--moss);
  background: rgba(15, 42, 34, .82);
}

.page-about .ab-tl__ver {
  display: inline-block;
  margin: 0 0 10px;
  padding: 2px 8px;
  background: var(--yellow);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
}

.page-about .ab-tl__name {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.34;
  color: var(--paper);
}

.page-about .ab-tl__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(233, 227, 211, .78);
}

.page-about .ab-tl__more {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease);
}

.page-about .ab-tl__more:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 团队与协作 ---------- */
.page-about .ab-team {
  background: linear-gradient(180deg, var(--ink) 0%, var(--deep) 100%);
}

.page-about .ab-team__grid {
  display: grid;
  gap: 28px;
}

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

.page-about .ab-team__item {
  padding: 16px 16px 14px;
  border: var(--ab-line);
  border-top: 2px solid var(--moss);
  background: rgba(11, 15, 13, .45);
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-about .ab-team__item:hover {
  transform: translateY(-2px);
  border-color: var(--moss);
  border-top-color: var(--lime);
}

.page-about .ab-team__role {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.3;
  color: var(--lime);
}

.page-about .ab-team__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(233, 227, 211, .8);
}

.page-about .ab-eco {
  display: grid;
  gap: 22px;
  margin-top: 30px;
  padding: 22px 20px 24px;
  border: var(--ab-line-strong);
  background: rgba(11, 15, 13, .55);
}

.page-about .ab-eco__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 22px;
  line-height: 1.32;
  color: var(--paper);
}

.page-about .ab-eco__text p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(233, 227, 211, .8);
}

.page-about .ab-eco__chart {
  width: 100%;
}

.page-about .ab-net {
  display: block;
  width: 100%;
  height: auto;
  max-width: 520px;
  margin: 0 auto;
}

.page-about .ab-net__line {
  stroke: rgba(49, 92, 76, .95);
  stroke-width: 1.5;
  transition: stroke .2s var(--ease), stroke-width .2s var(--ease);
}

.page-about .ab-net__dot {
  fill: var(--moss);
  transition: fill .2s var(--ease);
}

.page-about .ab-net__label {
  fill: var(--sage);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
}

.page-about .ab-net__node:hover .ab-net__line {
  stroke: var(--lime);
  stroke-width: 2.4;
}

.page-about .ab-net__node:hover .ab-net__dot {
  fill: var(--lime);
}

.page-about .ab-net__node:hover .ab-net__label {
  fill: var(--lime);
}

.page-about .ab-net__hub-ring {
  fill: rgba(15, 42, 34, .9);
  stroke: var(--lime);
  stroke-width: 1.6;
}

.page-about .ab-net__hub-text {
  fill: var(--paper);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .12em;
}

/* ---------- 规模数字 ---------- */
.page-about .ab-scale-sec {
  background: var(--ink);
}

.page-about .ab-scale {
  padding: 26px 20px 28px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid rgba(11, 15, 13, .22);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-about .ab-scale__grid {
  display: grid;
  gap: 22px;
}

.page-about .ab-scale__cell {
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(11, 15, 13, .16);
}

.page-about .ab-scale__cell:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .ab-scale__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 6.4vw, 44px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-about .ab-scale__num--red {
  color: var(--red);
}

.page-about .ab-scale__unit {
  margin-left: 4px;
  font-size: .4em;
  font-weight: 500;
  letter-spacing: .04em;
  color: rgba(11, 15, 13, .66);
}

.page-about .ab-scale__num--red .ab-scale__unit {
  color: rgba(217, 74, 61, .8);
}

.page-about .ab-scale__label {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(11, 15, 13, .74);
}

/* ---------- 品质保障 ---------- */
.page-about .ab-guard-sec {
  background: linear-gradient(180deg, var(--deep) 0%, var(--ink) 100%);
}

.page-about .ab-guard {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: ab-guard;
}

.page-about .ab-guard__item {
  position: relative;
  padding: 20px 18px 20px 64px;
  border: var(--ab-line);
  background: rgba(11, 15, 13, .5);
  transition: border-color .22s var(--ease);
}

.page-about .ab-guard__item:hover {
  border-color: var(--moss);
}

.page-about .ab-guard__idx {
  position: absolute;
  left: 16px;
  top: 18px;
  margin: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(199, 255, 61, .12);
  border: 1px solid var(--lime);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--lime);
}

.page-about .ab-guard__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .ab-guard__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(233, 227, 211, .78);
}

/* ---------- 收尾入口 ---------- */
.page-about .ab-next__panel {
  margin-top: 34px;
  padding: 26px 22px 28px;
  border: var(--ab-line-strong);
  background: linear-gradient(150deg, rgba(49, 92, 76, .55) 0%, rgba(15, 42, 34, .9) 60%, rgba(11, 15, 13, .95) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-about .ab-next__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(24px, 4.6vw, 34px);
  line-height: 1.2;
  color: var(--paper);
}

.page-about .ab-next__text {
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: rgba(233, 227, 211, .84);
}

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

.page-about .ab-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid rgba(233, 227, 211, .24);
  background: rgba(11, 15, 13, .5);
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: .04em;
  color: var(--paper);
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}

.page-about .ab-next__link span {
  color: var(--lime);
  transition: transform .2s var(--ease);
}

.page-about .ab-next__link:hover,
.page-about .ab-next__link:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
  background: rgba(199, 255, 61, .08);
}

.page-about .ab-next__link:hover span {
  transform: translateX(3px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-about .ab-sec {
    padding: 68px 0;
  }

  .page-about .ab-values {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .ab-scale__grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .ab-next__links {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 760px) {
  .page-about .ab-hero {
    padding: calc(var(--hd-h) + 72px) 0 82px;
  }

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

  .page-about .ab-sec {
    padding: 82px 0;
  }

  .page-about .ab-sec__head {
    margin-bottom: 38px;
  }

  .page-about .ab-origin__grid {
    grid-template-columns: 1.05fr .95fr;
    gap: 46px;
    align-items: start;
  }

  .page-about .ab-team__grid {
    grid-template-columns: 1.1fr .9fr;
    gap: 40px;
    align-items: start;
  }

  .page-about .ab-team__list {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .ab-guard {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .ab-guard__item:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-about .ab-tl__wrap {
    grid-template-columns: 240px 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .ab-tl__index {
    flex-direction: column;
    overflow: visible;
    position: sticky;
    top: calc(var(--hd-h) + 24px);
    padding-bottom: 0;
  }

  .page-about .ab-tl__link {
    width: 100%;
  }

  .page-about .ab-eco {
    grid-template-columns: 1fr 1.05fr;
    gap: 40px;
    align-items: center;
    padding: 28px 28px 30px;
  }
}

@media (min-width: 980px) {
  .page-about .ab-scale {
    padding: 34px 34px 36px;
  }

  .page-about .ab-scale__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 26px 34px;
  }

  .page-about .ab-scale__cell {
    padding-bottom: 0;
    border-bottom: 0;
    border-left: 1px solid rgba(11, 15, 13, .14);
    padding-left: 18px;
  }

  .page-about .ab-scale__cell:nth-child(3n + 1) {
    border-left: 0;
    padding-left: 0;
  }

  .page-about .ab-next__panel {
    padding: 34px 34px 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-value,
  .page-about .ab-team__item,
  .page-about .ab-next__link span,
  .page-about .ab-tl__item::before {
    transition: none;
  }

  .page-about .ab-value:hover,
  .page-about .ab-team__item:hover,
  .page-about .ab-next__link:hover span {
    transform: none;
  }
}
<<<END>>>