.page-about {
  background: var(--ok-deep);
  color: var(--ok-mist);
  overflow-x: hidden;
  position: relative;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbbar {
  padding: clamp(18px, 3vw, 30px) 0 0;
}

.page-about .about-crumbbar .ok-crumb a {
  color: var(--ok-muted);
  text-decoration: none;
  transition: color .25s var(--ok-ease);
}

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

.page-about .about-crumbbar .ok-crumb [aria-current="page"] {
  color: var(--ok-lime);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(30px, 5vw, 64px) 0 clamp(44px, 7vw, 92px);
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -18% -8% auto auto;
  width: min(66%, 760px);
  height: 130%;
  background: radial-gradient(58% 58% at 72% 22%, rgba(198, 255, 61, .12), transparent 72%);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero__slash {
  position: absolute;
  left: 0;
  bottom: clamp(20px, 4vw, 46px);
  width: min(38%, 420px);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 194, 75, .55));
  transform: rotate(-9deg);
  transform-origin: left center;
  pointer-events: none;
}

.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 46px);
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--ok-font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.6vw, 58px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--ok-white);
}

.page-about .about-hero__lead {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 62ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--ok-muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-hero__panel {
  position: relative;
  align-self: start;
  padding: clamp(20px, 3vw, 28px);
  background: var(--ok-char);
  border: 1px solid var(--ok-line);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-about .about-hero__panel::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 54px;
  height: 2px;
  background: var(--ok-lime);
}

.page-about .about-facts {
  margin: 16px 0 0;
}

.page-about .about-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--ok-line-soft);
}

.page-about .about-facts dt {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--ok-muted);
}

.page-about .about-facts dd {
  margin: 0;
  font-size: clamp(19px, 2vw, 23px);
  font-weight: 700;
  color: var(--ok-lime);
  letter-spacing: .02em;
}

.page-about .about-facts__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ok-dim);
}

/* ---------- 通用区块 ---------- */
.page-about .about-band {
  position: relative;
  padding: clamp(46px, 7.5vw, 96px) 0;
}

.page-about .about-band--alt {
  background: var(--ok-char);
}

.page-about .about-band--alt::before,
.page-about .about-band--alt::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--ok-line);
}

.page-about .about-band--alt::before { top: 0; }
.page-about .about-band--alt::after { bottom: 0; }

.page-about .about-band__head {
  max-width: 70ch;
}

.page-about .about-band__head .ok-section__num {
  color: var(--ok-lime);
  font-family: var(--ok-font-mono);
  letter-spacing: .16em;
}

.page-about .about-band__head .ok-section__title {
  margin: 10px 0 0;
  font-weight: 900;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--ok-white);
}

.page-about .about-band__head .ok-section__lead {
  margin: 14px 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--ok-muted);
}

/* ---------- 01 品牌出发点 ---------- */
.page-about .about-story {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 42px);
  margin-top: clamp(26px, 4vw, 44px);
}

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

.page-about .about-story__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
}

.page-about .about-story__cap {
  display: block;
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ok-dim);
  text-transform: uppercase;
}

.page-about .about-story__body p {
  margin: 0;
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.82;
  color: var(--ok-muted);
}

.page-about .about-story__body p + p {
  margin-top: 1.1em;
}

.page-about .about-story__list {
  margin-top: 1.5em;
}

.page-about .about-story__list .ok-list__item {
  padding: 11px 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ok-mist);
  border-bottom: 1px solid var(--ok-line-soft);
}

.page-about .about-story__list .ok-list__item::marker {
  color: var(--ok-lime);
}

/* ---------- 02 三块内容 ---------- */
.page-about .about-lines {
  margin-top: clamp(26px, 4vw, 42px);
  border-top: 1px solid var(--ok-line);
}

.page-about .about-line {
  border-bottom: 1px solid var(--ok-line);
}

.page-about .about-line__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(12px, 2vw, 20px);
  width: 100%;
  padding: clamp(18px, 2.4vw, 26px) 0;
  background: none;
  border: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: color .25s var(--ok-ease);
}

.page-about .about-line__head:hover,
.page-about .about-line__head:focus-visible {
  color: var(--ok-lime);
  outline: none;
}

.page-about .about-line__idx {
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--ok-gold);
}

.page-about .about-line__name {
  font-weight: 800;
  font-size: clamp(19px, 2.2vw, 26px);
  letter-spacing: -.01em;
}

.page-about .about-line__body {
  display: none;
  padding: 0 0 clamp(20px, 2.6vw, 30px);
}

.page-about .about-line__body[data-open] {
  display: block;
}

.page-about .about-line__body p {
  margin: 0;
  max-width: 72ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ok-muted);
}

.page-about .about-line__body .ok-list {
  margin-top: 14px;
}

.page-about .about-line__body .ok-list__item {
  padding: 9px 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ok-mist);
  border-bottom: 1px solid var(--ok-line-soft);
}

.page-about .about-line__body .ok-list__item::marker {
  color: var(--ok-lime);
}

/* ---------- 03 更新流程 ---------- */
.page-about .about-flow {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 2.6vw, 28px);
  counter-reset: none;
}

.page-about .about-flow__item {
  position: relative;
  padding-top: 20px;
  border-top: 1px solid var(--ok-line);
}

.page-about .about-flow__item::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--ok-lime);
  transition: width .3s var(--ok-ease);
}

.page-about .about-flow__item:hover::before {
  width: 74px;
}

.page-about .about-flow__step {
  display: block;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--ok-lime);
}

.page-about .about-flow__title {
  margin: 9px 0 7px;
  font-size: clamp(17px, 1.8vw, 21px);
  font-weight: 800;
  color: var(--ok-white);
}

.page-about .about-flow__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ok-muted);
}

.page-about .about-flow__media {
  margin: clamp(30px, 4.5vw, 50px) 0 0;
}

.page-about .about-flow__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-about .about-flow__cap {
  display: block;
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ok-dim);
  text-transform: uppercase;
}

/* ---------- 04 多设备 ---------- */
.page-about .about-device {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 46px);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-about .about-device__body > p {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.82;
  color: var(--ok-muted);
}

.page-about .about-device__points {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-device__point {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--ok-line-soft);
}

.page-about .about-device__mark {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--ok-gold);
  padding-top: 3px;
}

.page-about .about-device__point p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ok-mist);
}

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

.page-about .about-device__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.page-about .about-device__cap {
  display: block;
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ok-dim);
  text-transform: uppercase;
}

/* ---------- 05 服务覆盖 ---------- */
.page-about .about-reach {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 4vw, 42px);
  background: var(--ok-line-soft);
  border: 1px solid var(--ok-line);
}

.page-about .about-reach__stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 30px);
  background: var(--ok-deep);
  transition: background .3s var(--ok-ease);
}

.page-about .about-reach__stat:hover {
  background: var(--ok-card);
}

.page-about .about-reach__value {
  font-family: var(--ok-font-mono);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--ok-gold);
  transition: color .5s var(--ok-ease), text-shadow .5s var(--ok-ease);
}

.page-about .about-reach__stat.is-in .about-reach__value {
  color: var(--ok-lime);
  text-shadow: 0 0 22px rgba(198, 255, 61, .34);
}

.page-about .about-reach__label {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ok-muted);
}

.page-about .about-reach__note {
  margin-top: clamp(22px, 3vw, 32px);
  max-width: 70ch;
}

.page-about .about-reach__note p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ok-muted);
}

/* ---------- 06 发展轨迹 ---------- */
.page-about .about-timeline {
  margin-top: clamp(26px, 4vw, 42px);
  border-top: 1px solid var(--ok-line);
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 20px 0 20px 18px;
  border-bottom: 1px solid var(--ok-line);
  transition: padding-left .28s var(--ok-ease);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: transparent;
  transition: background .28s var(--ok-ease);
}

.page-about .about-timeline__item:hover {
  padding-left: 24px;
}

.page-about .about-timeline__item:hover::before {
  background: var(--ok-gold);
}

.page-about .about-timeline__year {
  font-family: var(--ok-font-mono);
  font-weight: 700;
  font-size: clamp(15px, 1.7vw, 19px);
  letter-spacing: .08em;
  color: var(--ok-gold);
}

.page-about .about-timeline__title {
  margin: 0 0 6px;
  font-size: clamp(17px, 1.9vw, 22px);
  font-weight: 800;
  color: var(--ok-white);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ok-muted);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  position: relative;
  padding: clamp(46px, 7vw, 90px) 0 clamp(56px, 8vw, 104px);
  background: var(--ok-deep);
  overflow: hidden;
}

.page-about .about-cta__beam {
  position: absolute;
  left: 50%;
  top: -30%;
  width: min(90%, 900px);
  height: 150%;
  transform: translateX(-50%) rotate(-6deg);
  background: radial-gradient(45% 55% at 50% 40%, rgba(198, 255, 61, .10), transparent 72%);
  pointer-events: none;
}

.page-about .about-cta__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: center;
}

.page-about .about-cta__title {
  margin: 0;
  font-size: clamp(23px, 3vw, 34px);
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--ok-white);
}

.page-about .about-cta__text {
  margin: 14px 0 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ok-muted);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-reach {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 880px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, .82fr);
    align-items: start;
  }

  .page-about .about-story {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-device {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }

  .page-about .about-timeline__item {
    grid-template-columns: minmax(110px, 150px) minmax(0, 1fr);
    gap: 26px;
    align-items: baseline;
    padding: 24px 20px 24px 22px;
  }

  .page-about .about-timeline__item:hover {
    padding-left: 30px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: end;
  }

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

@media (min-width: 1020px) {
  .page-about .about-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 420px) {
  .page-about .about-line__head {
    grid-template-columns: auto minmax(0, 1fr);
    row-gap: 10px;
  }

  .page-about .about-line__head .ok-tag {
    grid-column: 2;
    justify-self: start;
  }

  .page-about .about-hero__actions .ok-btn,
  .page-about .about-cta__links .ok-btn {
    width: 100%;
    justify-content: center;
  }
}
<<<END>>>