.page-about {
  background:
    radial-gradient(120% 58% at 86% 0%, rgba(24, 224, 200, .10), transparent 62%),
    radial-gradient(90% 45% at 4% 38%, rgba(124, 92, 255, .07), transparent 68%),
    var(--ak-deep);
  color: var(--ak-white);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding: calc(var(--ak-head-h) + 40px) 0 0;
  overflow: hidden;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -22%;
  width: 82%;
  height: 72%;
  background: linear-gradient(150deg, rgba(24, 224, 200, .18), rgba(124, 92, 255, .10) 52%, rgba(230, 57, 70, 0) 82%);
  clip-path: polygon(22% 0, 100% 0, 100% 74%, 0 100%);
  pointer-events: none;
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  left: 0;
  top: 42%;
  width: 3px;
  height: 130px;
  background: linear-gradient(180deg, var(--ak-red), var(--ak-yellow));
  opacity: .85;
  pointer-events: none;
}

.page-about .ak-breadcrumb {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-family: var(--ak-font-data);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ak-text-dim);
}

.page-about .ak-breadcrumb .ak-link {
  color: var(--ak-text-dim);
  text-decoration: none;
}

.page-about .ak-breadcrumb .ak-link:hover {
  color: var(--ak-cyan);
}

.page-about .ab-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 52px);
  align-items: start;
}

.page-about .ab-hero__copy .ak-h1 {
  margin: 0 0 20px;
  max-width: 20ch;
}

.page-about .ab-hero__copy .ak-lede {
  max-width: 60ch;
  margin: 0;
  color: var(--ak-text-soft);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .ab-hero__panel {
  position: relative;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--ak-line-strong);
  border-radius: var(--ak-radius);
  background: linear-gradient(180deg, rgba(23, 32, 29, .82), rgba(17, 20, 23, .70));
  backdrop-filter: blur(12px);
  box-shadow: 0 26px 64px -44px rgba(0, 0, 0, .95);
}

.page-about .ab-hero__panel::before {
  content: "";
  position: absolute;
  left: -1px;
  right: -1px;
  top: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--ak-red), var(--ak-yellow) 46%, transparent 94%);
}

.page-about .ab-hero__panel-label {
  margin: 0 0 8px;
  font-family: var(--ak-font-data);
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ak-grey);
}

.page-about .ab-hero__panel-ver {
  margin: 0 0 20px;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--ak-white);
}

.page-about .ab-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ak-line);
  border-top: 1px solid var(--ak-line);
  border-bottom: 1px solid var(--ak-line);
}

.page-about .ab-hero__stats > li {
  background: rgba(11, 31, 23, .58);
  padding: 14px 12px;
}

.page-about .ab-hero__stats .ak-stat__num {
  display: block;
  font-size: clamp(1.3rem, 2.6vw, 1.7rem);
  line-height: 1.15;
}

.page-about .ab-hero__stats .ak-stat__label {
  display: block;
  margin-top: 6px;
  font-size: .76rem;
  line-height: 1.5;
  color: var(--ak-text-dim);
}

.page-about .ab-hero__media {
  position: relative;
  margin-top: clamp(30px, 5vw, 56px);
}

/* ---------- 通用媒体 ---------- */
.page-about .ak-media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--ak-line);
  border-radius: var(--ak-radius);
  background-color: var(--ak-char);
  background-image:
    repeating-linear-gradient(0deg, rgba(244, 247, 245, .045) 0 1px, transparent 1px 30px),
    repeating-linear-gradient(90deg, rgba(244, 247, 245, .045) 0 1px, transparent 1px 30px);
}

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

.page-about .ak-media__tex {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .5;
  mix-blend-mode: overlay;
  background-image:
    repeating-linear-gradient(0deg, rgba(244, 247, 245, .06) 0 1px, transparent 1px 30px),
    repeating-linear-gradient(90deg, rgba(244, 247, 245, .06) 0 1px, transparent 1px 30px);
}

.page-about .ak-media__cap {
  position: relative;
  z-index: 2;
  margin: 0;
  padding: 10px 14px;
  border-top: 1px solid var(--ak-line);
  background: rgba(17, 20, 23, .88);
  font-family: var(--ak-font-data);
  font-size: .72rem;
  letter-spacing: .05em;
  color: var(--ak-text-dim);
}

/* ---------- 章节索引条 ---------- */
.page-about .ab-index {
  position: sticky;
  top: var(--ak-head-h);
  z-index: 6;
  margin-top: clamp(32px, 5vw, 56px);
  border-top: 1px solid var(--ak-line);
  border-bottom: 1px solid var(--ak-line);
  background: rgba(11, 31, 23, .88);
  backdrop-filter: blur(10px);
}

.page-about .ab-index__inner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 10px;
  padding-bottom: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .ab-index__inner::-webkit-scrollbar {
  display: none;
}

.page-about .ab-index__label {
  flex: 0 0 auto;
  margin-right: 10px;
  font-family: var(--ak-font-data);
  font-size: .68rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ak-grey);
}

.page-about .ab-index__link {
  flex: 0 0 auto;
  padding: 7px 12px;
  border: 1px solid var(--ak-line);
  border-radius: var(--ak-radius);
  font-size: .8125rem;
  color: var(--ak-text-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-about .ab-index__link:hover,
.page-about .ab-index__link:focus-visible {
  color: var(--ak-ink);
  background: var(--ak-cyan);
  border-color: var(--ak-cyan);
}

/* ---------- 章节骨架 ---------- */
.page-about .ab-chapter {
  position: relative;
}

.page-about .ak-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-top: 18px;
  margin-bottom: clamp(22px, 3.4vw, 36px);
  border-top: 1px solid var(--ak-line);
}

.page-about .ak-section__num {
  font-size: .8rem;
  letter-spacing: .16em;
  color: var(--ak-cyan);
}

/* ---------- 01 品牌起点 ---------- */
.page-about .ab-origin {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .ab-origin__main p {
  margin: 0 0 1.05em;
  color: var(--ak-text-soft);
  line-height: 1.88;
}

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

.page-about .ab-origin__main .ak-aside {
  position: relative;
  margin: 1.5em 0;
  padding: 4px 0 4px 16px;
  border-left: 3px solid var(--ak-yellow);
  color: var(--ak-white);
  font-size: .98rem;
  line-height: 1.8;
}

.page-about .ab-origin__side {
  padding: 8px 18px;
  border: 1px solid var(--ak-line);
  border-radius: var(--ak-radius);
  background: linear-gradient(180deg, rgba(23, 32, 29, .62), rgba(17, 20, 23, .50));
}

.page-about .ab-origin__side .ak-list__item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--ak-line-soft);
}

.page-about .ab-origin__side .ak-list__item:last-child {
  border-bottom: 0;
}

.page-about .ab-origin__side .ak-list__key {
  flex: 0 0 auto;
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--ak-grey);
}

.page-about .ab-origin__side .ak-list__val {
  text-align: right;
  font-size: .88rem;
  color: var(--ak-white);
  word-break: break-word;
}

/* ---------- 02 版本节奏 ---------- */
.page-about .ab-tl__wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

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

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--ak-cyan), rgba(24, 224, 200, .22) 46%, rgba(244, 197, 66, .45) 82%, transparent);
}

.page-about .ab-tl__item {
  position: relative;
  padding: 0 0 clamp(22px, 3vw, 30px) 36px;
  border-radius: var(--ak-radius);
  transition: background-color .2s ease;
}

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

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 17px;
  height: 17px;
  box-sizing: border-box;
  border: 2px solid var(--ak-cyan);
  border-radius: 50%;
  background: var(--ak-deep);
  transition: border-color .18s ease, box-shadow .18s ease;
}

.page-about .ab-tl__item:hover {
  background: linear-gradient(90deg, rgba(244, 197, 66, .07), transparent 72%);
}

.page-about .ab-tl__item:hover::before {
  border-color: var(--ak-yellow);
  box-shadow: 0 0 0 4px rgba(244, 197, 66, .14);
}

.page-about .ab-tl__year {
  margin: 0 0 5px;
  font-size: .76rem;
  letter-spacing: .16em;
  color: var(--ak-cyan);
}

.page-about .ab-tl__item .ak-h3 {
  margin: 0 0 7px;
  font-size: clamp(1.05rem, 1.8vw, 1.22rem);
  transition: color .18s ease;
}

.page-about .ab-tl__item:hover .ak-h3 {
  color: var(--ak-yellow);
}

.page-about .ab-tl__item p:last-child {
  margin: 0;
  font-size: .95rem;
  line-height: 1.82;
  color: var(--ak-text-soft);
}

/* ---------- 03 查询能力 ---------- */
.page-about .ab-caps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ak-gap);
}

.page-about .ab-cap {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 18px 20px;
  border: 1px solid var(--ak-line);
  border-top-width: 2px;
  border-radius: var(--ak-radius);
  background: linear-gradient(180deg, rgba(23, 32, 29, .66), rgba(17, 20, 23, .56));
  transition: border-color .2s ease, transform .2s ease, background-color .2s ease;
}

.page-about .ab-cap:hover {
  transform: translateY(-2px);
  border-color: var(--ak-line-strong);
  background: linear-gradient(180deg, rgba(26, 38, 34, .78), rgba(17, 20, 23, .62));
}

.page-about .ab-cap--cyan { border-top-color: var(--ak-cyan); }
.page-about .ab-cap--red { border-top-color: var(--ak-red); }
.page-about .ab-cap--yellow { border-top-color: var(--ak-yellow); }
.page-about .ab-cap--violet { border-top-color: var(--ak-violet); }

.page-about .ab-cap .ak-card__title {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.45;
}

.page-about .ab-cap .ak-card__body {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--ak-text-soft);
}

.page-about .ab-cap__num {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--ak-line-soft);
  font-size: .8rem;
  letter-spacing: .05em;
  color: var(--ak-text-dim);
}

/* ---------- 04 协作生态 ---------- */
.page-about .ab-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .ab-team__main > p {
  margin: 0 0 clamp(20px, 3vw, 28px);
  color: var(--ak-text-soft);
  line-height: 1.88;
}

.page-about .ab-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  border: 1px solid var(--ak-line);
  border-radius: var(--ak-radius);
  background: var(--ak-line);
  overflow: hidden;
}

.page-about .ab-team__list > li {
  padding: 16px 18px;
  background: rgba(17, 20, 23, .74);
  transition: background-color .2s ease;
}

.page-about .ab-team__list > li:hover {
  background: rgba(24, 224, 200, .07);
}

.page-about .ab-team__k {
  margin: 0 0 6px;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ak-yellow);
}

.page-about .ab-team__v {
  margin: 0;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--ak-text-soft);
}

/* ---------- 05 服务范围 ---------- */
.page-about .ab-service {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .ab-service__main > p {
  margin: 0 0 clamp(18px, 3vw, 26px);
  color: var(--ak-text-soft);
  line-height: 1.88;
}

.page-about .ab-service__scope {
  list-style: none;
  margin: 0 0 clamp(22px, 3vw, 30px);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

.page-about .ab-service__panel {
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--ak-line-strong);
  border-radius: var(--ak-radius);
  background: linear-gradient(180deg, rgba(23, 32, 29, .74), rgba(17, 20, 23, .60));
  backdrop-filter: blur(10px);
}

.page-about .ab-service__panel-title {
  margin: 0 0 14px;
  font-family: var(--ak-font-head);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--ak-white);
}

.page-about .ab-service__panel .ak-list__item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--ak-line-soft);
}

.page-about .ab-service__panel .ak-list__item:last-child {
  border-bottom: 0;
}

.page-about .ab-service__panel .ak-list__key {
  flex: 0 0 auto;
  font-size: .8rem;
  color: var(--ak-grey);
}

.page-about .ab-service__panel .ak-list__val {
  text-align: right;
  font-size: .86rem;
  color: var(--ak-white);
}

.page-about .ab-service__panel-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--ak-line);
  font-size: .84rem;
  line-height: 1.75;
  color: var(--ak-text-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .ab-caps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, .88fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .ab-origin {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }
}

@media (min-width: 960px) {
  .page-about .ab-tl__wrap {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 1fr);
  }

  .page-about .ab-tl__media {
    position: sticky;
    top: calc(var(--ak-head-h) + 78px);
  }

  .page-about .ab-team {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

  .page-about .ab-service {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }
}

@media (min-width: 1080px) {
  .page-about .ab-caps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-cap,
  .page-about .ab-tl__item,
  .page-about .ab-tl__item::before,
  .page-about .ab-index__link {
    transition: none;
  }

  .page-about .ab-cap:hover {
    transform: none;
  }
}
<<<END>>>