.page-about {
  --ab-pad: clamp(16px, 4vw, 48px);
  --ab-rule: 2px solid var(--ink);
  --ab-soft-line: 1px solid rgba(20, 20, 15, 0.16);
  --ab-muted: rgba(20, 20, 15, 0.62);
  background: var(--paper);
  color: var(--black);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about .ab-sheet {
  max-width: 1320px;
  margin-inline: auto;
  padding: 0 var(--ab-pad) 0;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  padding: clamp(20px, 3vw, 36px) 0 clamp(32px, 4vw, 56px);
  border-bottom: var(--ab-rule);
}

.page-about .ab-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .ab-crumb a {
  color: var(--black);
  text-decoration: none;
  border-bottom: 2px solid var(--lime-deep);
  padding-bottom: 1px;
}

.page-about .ab-crumb a:hover {
  color: var(--lime-deep);
}

.page-about .ab-crumb__sep {
  color: var(--ab-muted);
}

.page-about .ab-crumb__now {
  color: var(--lime-deep);
  font-weight: 700;
}

.page-about .ab-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: clamp(20px, 3vw, 32px) 0 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ab-muted);
}

.page-about .ab-kicker span {
  background: var(--ink);
  color: var(--lime);
  padding: 4px 8px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.page-about .ab-h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 7.2vw, 80px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  text-wrap: balance;
  max-width: 18ch;
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(24px, 3vw, 40px);
  margin-top: clamp(24px, 3vw, 36px);
}

.page-about .ab-lede {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  max-width: 60ch;
  color: rgba(20, 20, 15, 0.88);
}

.page-about .ab-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
  min-height: 48px;
  padding: 14px 26px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  border: var(--ab-rule);
  box-shadow: var(--shadow-lime);
  transition: transform 0.16s var(--ease), box-shadow 0.16s var(--ease), color 0.16s var(--ease);
}

.page-about .ab-cta:hover,
.page-about .ab-cta:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--ink-3);
  color: var(--lime);
}

.page-about .ab-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin: 0;
  padding: 0;
  background: var(--ink);
  border: var(--ab-rule);
}

.page-about .ab-stat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 14px 18px;
  background: var(--paper);
}

.page-about .ab-stat__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1;
  color: var(--lime-deep);
  letter-spacing: -0.02em;
}

.page-about .ab-stat__unit {
  font-size: 0.5em;
  margin-left: 2px;
  letter-spacing: 0;
}

.page-about .ab-stat__name {
  font-size: 13px;
  line-height: 1.4;
  color: var(--ab-muted);
}

.page-about .ab-stat__note {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 100%;
  margin-bottom: 6px;
  padding: 8px 10px;
  background: var(--ink);
  color: var(--paper);
  font-size: 12px;
  line-height: 1.5;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease), visibility 0.18s;
  z-index: 6;
}

@media (hover: hover) {
  .page-about .ab-stat:hover .ab-stat__note,
  .page-about .ab-stat:focus-within .ab-stat__note {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* ---------- 章节骨架 ---------- */
.page-about .ab-sec {
  position: relative;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(34px, 5vw, 62px) 0;
  border-bottom: var(--ab-soft-line);
}

.page-about .ab-sec__rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.page-about .ab-sec__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(16px, 2vw, 22px);
  color: var(--lime-deep);
  letter-spacing: -0.02em;
}

.page-about .ab-sec__rule {
  flex: 1;
  width: 2px;
  background: var(--ink);
  opacity: 0.9;
}

.page-about .ab-h2 {
  margin: 0 0 clamp(14px, 2vw, 20px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.2vw, 42px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  text-wrap: balance;
  max-width: 22ch;
}

.page-about .ab-lead {
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  max-width: 64ch;
  color: rgba(20, 20, 15, 0.82);
}

/* ---------- 01 起点 ---------- */
.page-about .ab-split {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.page-about .ab-split--tight {
  gap: clamp(16px, 2vw, 24px);
  margin-top: clamp(20px, 3vw, 28px);
}

.page-about .ab-serif {
  margin: 0;
  padding-left: 18px;
  border-left: 6px solid var(--lime-deep);
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.6;
  color: var(--black);
  text-wrap: pretty;
}

.page-about .ab-quote__from {
  margin: 14px 0 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ab-muted);
}

.page-about .ab-facts p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.85;
  max-width: 62ch;
  color: rgba(20, 20, 15, 0.84);
}

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

.page-about .ab-fig {
  margin: clamp(24px, 3vw, 38px) 0 0;
  border: var(--ab-rule);
  background: var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-about .ab-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .ab-fig figcaption {
  padding: 10px 14px;
  background: var(--ink);
  color: var(--mist);
  font-size: 12.5px;
  line-height: 1.6;
}

/* ---------- 02 年表 ---------- */
.page-about .ab-track {
  border: var(--ab-rule);
  background: var(--ink);
  overflow-x: auto;
  margin-bottom: clamp(18px, 2.5vw, 26px);
}

.page-about .ab-track__list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: min-content;
}

.page-about .ab-track__node {
  flex: 1 0 auto;
  min-width: 108px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 16px 14px 18px;
  border-right: 1px solid rgba(143, 175, 164, 0.28);
}

.page-about .ab-track__node:last-child {
  border-right: 0;
}

.page-about .ab-track__node::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-bottom: 8px;
  border-radius: 50%;
  background: var(--mist);
}

.page-about .ab-track__node--now {
  background: var(--ink-2);
}

.page-about .ab-track__node--now::before {
  background: var(--amber);
}

.page-about .ab-track__y {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 21px;
  line-height: 1;
  color: var(--paper);
}

.page-about .ab-track__node--now .ab-track__y {
  color: var(--lime);
}

.page-about .ab-track__t {
  font-size: 12px;
  line-height: 1.45;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-about .ab-years .acc__item {
  border: var(--ab-rule);
  border-top: 0;
  background: var(--paper);
}

.page-about .ab-years .acc__item:first-child {
  border-top: var(--ab-rule);
}

.page-about .ab-years .acc__btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  min-height: 56px;
  margin: 0;
  padding: 14px;
  background: none;
  border: 0;
  font: inherit;
  font-family: var(--font-body);
  text-align: left;
  color: var(--black);
  cursor: pointer;
}

.page-about .ab-years .acc__btn:hover {
  background: var(--paper-2);
}

.page-about .ab-years .acc__btn:focus-visible {
  outline: 3px solid var(--lime-deep);
  outline-offset: -3px;
}

.page-about .ab-years .acc__num {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 17px;
  color: var(--lime-deep);
  letter-spacing: -0.01em;
}

.page-about .ab-years .acc__label {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
}

.page-about .ab-years .acc__icon {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-left: auto;
  border: 2px solid var(--ink);
  background: var(--paper-2);
}

.page-about .ab-years .acc__icon::before,
.page-about .ab-years .acc__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--ink);
  transform: translate(-50%, -50%);
}

.page-about .ab-years .acc__icon::before {
  width: 10px;
  height: 2px;
}

.page-about .ab-years .acc__icon::after {
  width: 2px;
  height: 10px;
  transition: transform 0.16s var(--ease);
}

.page-about .ab-years .acc__btn[aria-expanded="true"] .acc__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-about .ab-years .acc__panel {
  padding: 16px 16px 20px;
  border-top: 1px dashed rgba(20, 20, 15, 0.22);
  background: var(--paper-2);
}

.page-about .ab-years .acc__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  max-width: 66ch;
  color: rgba(20, 20, 15, 0.84);
}

/* ---------- 03 团队（深色） ---------- */
.page-about .ab-sec--ink {
  margin-inline: calc(-1 * var(--ab-pad));
  padding-inline: var(--ab-pad);
  background: var(--ink);
  color: var(--paper);
  border-bottom: 2px solid var(--ink-2);
}

.page-about .ab-sec--ink .ab-sec__num {
  color: var(--lime);
}

.page-about .ab-sec--ink .ab-sec__rule {
  background: var(--mist);
  opacity: 0.5;
}

.page-about .ab-sec--ink .ab-h2,
.page-about .ab-sec--ink .ab-lead {
  color: var(--paper);
}

.page-about .ab-sec--ink .ab-lead {
  color: rgba(245, 239, 225, 0.78);
}

.page-about .ab-fig--full {
  margin-top: clamp(20px, 3vw, 30px);
  border-color: var(--mist);
  box-shadow: 6px 6px 0 var(--ink-3);
}

.page-about .ab-fig--full img {
  aspect-ratio: 16 / 9;
}

.page-about .ab-crew {
  display: grid;
  gap: 2px;
  margin-top: clamp(20px, 3vw, 30px);
  background: var(--mist);
  border: 2px solid var(--mist);
}

.page-about .ab-crew__card {
  padding: 20px 18px 22px;
  background: var(--ink-2);
}

.page-about .ab-crew__num {
  display: block;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(34px, 5vw, 46px);
  line-height: 1;
  color: var(--lime);
  letter-spacing: -0.03em;
}

.page-about .ab-crew__name {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .ab-crew__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(245, 239, 225, 0.76);
}

.page-about .ab-shift {
  display: grid;
  gap: 6px;
  margin-top: clamp(20px, 3vw, 28px);
  padding-left: 16px;
  border-left: 6px solid var(--amber);
}

.page-about .ab-shift__label {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-about .ab-shift__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  max-width: 62ch;
  color: rgba(245, 239, 225, 0.8);
}

/* ---------- 04 合作 ---------- */
.page-about .ab-coop {
  display: grid;
  gap: 2px;
  background: var(--ink);
  border: var(--ab-rule);
}

.page-about .ab-coop__item {
  padding: 20px 18px 22px;
  background: var(--paper);
}

.page-about .ab-coop__tag {
  display: inline-block;
  padding: 3px 8px;
  background: var(--paper-2);
  border-left: 4px solid var(--amber-deep);
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber-deep);
}

.page-about .ab-coop__item h3 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.15;
  color: var(--black);
}

.page-about .ab-coop__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(20, 20, 15, 0.8);
}

.page-about .ab-inline-link {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(20, 20, 15, 0.8);
}

.page-about .ab-inline-link a,
.page-about .ab-close a {
  color: var(--lime-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--lime-deep);
  font-weight: 700;
}

.page-about .ab-inline-link a:hover,
.page-about .ab-close a:hover {
  background: var(--lime);
  color: var(--black);
}

/* ---------- 05 服务半径 ---------- */
.page-about .ab-sec--paper2 {
  margin-inline: calc(-1 * var(--ab-pad));
  padding-inline: var(--ab-pad);
  background: var(--paper-2);
  border-bottom: var(--ab-rule);
}

.page-about .ab-narrow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--ink);
  border: var(--ab-rule);
}

.page-about .ab-narrow__cell {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px 14px;
  background: var(--paper);
}

.page-about .ab-narrow__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 32px);
  line-height: 1;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.page-about .ab-narrow__num span {
  font-size: 0.55em;
  margin-left: 2px;
}

.page-about .ab-narrow__name {
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--ab-muted);
}

/* ---------- 06 认可 ---------- */
.page-about .ab-sec--award {
  position: relative;
  overflow: hidden;
  border-bottom: 0;
}

.page-about .ab-award__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.26;
}

.page-about .ab-award__bg img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: grayscale(0.35);
}

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

.page-about .ab-honor {
  list-style: none;
  margin: 0 0 clamp(22px, 3vw, 32px);
  padding: 0;
  display: grid;
  gap: 2px;
  background: rgba(143, 175, 164, 0.35);
  border: 2px solid var(--mist);
}

.page-about .ab-honor li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 16px;
  background: var(--ink-2);
}

.page-about .ab-honor__y {
  flex: 0 0 auto;
  min-width: 74px;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.1;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-about .ab-honor__y span {
  font-size: 0.6em;
  margin-left: 2px;
}

.page-about .ab-honor__t {
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(245, 239, 225, 0.84);
}

.page-about .ab-close {
  margin: 0;
  padding-top: clamp(16px, 2vw, 22px);
  border-top: 1px solid rgba(143, 175, 164, 0.35);
  font-size: 15px;
  line-height: 1.9;
  max-width: 64ch;
  color: rgba(245, 239, 225, 0.8);
}

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

.page-about .ab-close a:hover {
  background: var(--lime);
  color: var(--ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 860px) {
  .page-about .ab-sheet {
    padding-top: clamp(28px, 3vw, 44px);
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .ab-sec {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: clamp(24px, 3vw, 40px);
  }

  .page-about .ab-sec__num {
    font-size: 24px;
  }

  .page-about .ab-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-about .ab-split--tight {
    gap: clamp(24px, 3vw, 40px);
  }

  .page-about .ab-fig--offset {
    width: 64%;
    margin-left: 36%;
  }

  .page-about .ab-years .acc__label {
    font-size: 16px;
  }

  .page-about .ab-honor li {
    align-items: center;
  }

  .page-about .ab-honor__y {
    min-width: 96px;
    font-size: 22px;
  }
}
<<<END>>>