.page-about {
  --about-body: #C4D4E0;
  --about-line: rgba(143, 166, 184, .22);
  --about-ink-soft: #46586A;
  background: var(--sea);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.7;
  overflow-x: hidden;
  padding-bottom: 64px;
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 面包屑 */
.page-about .about-crumb {
  padding-top: 20px;
}

.page-about .about-crumb .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-about .about-crumb .breadcrumb__link {
  color: var(--mist);
  text-decoration: none;
}

.page-about .about-crumb .breadcrumb__link:hover,
.page-about .about-crumb .breadcrumb__link:focus-visible {
  color: var(--cyan);
}

.page-about .about-crumb .breadcrumb__sep {
  color: rgba(143, 166, 184, .5);
}

.page-about .about-crumb .breadcrumb__current {
  color: var(--cyan);
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  padding: 26px 0 38px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -18%;
  width: min(680px, 92vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 40% 40%, rgba(53, 242, 208, .15), rgba(53, 242, 208, 0) 66%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--amber) 55%, transparent 92%);
  transform: skewY(-.6deg);
  opacity: .8;
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  gap: 26px;
}

.page-about .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(30px, 6.6vw, 58px);
  line-height: 1.1;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--text);
}

.page-about .about-hero__lede {
  margin: 16px 0 0;
  max-width: 54ch;
  font-size: clamp(14px, 3.6vw, 17px);
  color: var(--about-body);
}

.page-about .about-hero__figure {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(158deg, var(--mid), rgba(11, 34, 57, .35));
  padding: 20px 22px 22px;
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  right: -46px;
  top: -46px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 179, 71, .2), transparent 70%);
  pointer-events: none;
}

.page-about .about-hero__figlabel {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .28em;
  color: var(--mist);
}

.page-about .about-hero__num {
  margin: 6px 0 10px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(64px, 17vw, 104px);
  line-height: .88;
  letter-spacing: -.04em;
  color: var(--cyan);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .about-hero__num em {
  font-style: normal;
  font-size: 16px;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-about .about-hero__note {
  position: relative;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* 正文两栏：索引 + 文章 */
.page-about .about-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding-top: 8px;
}

.page-about .about-index {
  border-bottom: 1px solid var(--about-line);
  padding-bottom: 18px;
}

.page-about .about-index__caption {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .26em;
  color: var(--mist);
}

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

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--about-line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--cyan);
  border-color: rgba(53, 242, 208, .55);
  background: rgba(53, 242, 208, .07);
}

.page-about .about-main {
  min-width: 0;
}

/* 章节 */
.page-about .about-sec {
  padding: 34px 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-sec:first-child {
  border-top: 0;
  padding-top: 6px;
}

.page-about .about-sec__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--amber);
}

.page-about .about-sec h2 {
  margin: 10px 0 16px;
  font-size: clamp(22px, 4.8vw, 36px);
  line-height: 1.24;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--text);
}

.page-about .about-sec p {
  margin: 0 0 1em;
  max-width: 66ch;
  color: var(--about-body);
}

.page-about .about-note {
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--mist);
  max-width: 60ch;
}

.page-about .about-quote {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(53, 242, 208, .07);
  font-size: clamp(16px, 4vw, 20px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  max-width: 62ch;
}

/* 图片 */
.page-about .about-figure {
  margin: 22px 0;
}

.page-about .about-figure .media__img {
  width: 100%;
  border-radius: var(--r-md);
  background: linear-gradient(140deg, var(--mid), rgba(53, 242, 208, .1));
  object-fit: cover;
}

.page-about .about-figure .media__caption {
  margin-top: 8px;
  font-size: 12px;
  color: var(--mist);
}

/* 时间线 */
.page-about .tl {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 242, 208, .1));
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 28px 34px;
}

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

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 12px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--sea);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 242, 208, .12);
}

.page-about .tl__year {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 6.4vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--amber);
}

.page-about .tl__tag {
  display: inline-block;
  margin: 8px 0 6px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(53, 242, 208, .12);
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: .12em;
}

.page-about .tl__text {
  margin: 0;
  max-width: 60ch;
  color: var(--about-body);
  font-size: 14px;
}

/* 数据能力 */
.page-about .stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 20px 0 0;
}

.page-about .stat {
  border: 1px solid var(--about-line);
  border-radius: var(--r-md);
  background: var(--mid);
  padding: 14px 14px 16px;
}

.page-about .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 6.4vw, 38px);
  line-height: 1.1;
  color: var(--cyan);
}

.page-about .stat__num em {
  font-style: normal;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--amber);
  margin-left: 3px;
}

.page-about .stat__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* 服务覆盖 */
.page-about .reach {
  margin: 18px 0 0;
  border-top: 1px dashed var(--about-line);
}

.page-about .reach__row {
  display: grid;
  gap: 4px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--about-line);
}

.page-about .reach__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(32px, 7.6vw, 48px);
  line-height: 1;
  color: var(--amber);
}

.page-about .reach__body {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  color: var(--about-body);
}

.page-about .reach__body b {
  display: inline;
  color: var(--cyan);
  font-weight: 600;
}

/* 荣誉 */
.page-about .honor {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  background: var(--cream);
  color: var(--ink);
  padding: 26px 22px 28px;
}

.page-about .honor::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -70px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  border: 14px solid rgba(7, 26, 43, .06);
  pointer-events: none;
}

.page-about .honor .about-sec__kicker {
  color: var(--teal);
}

.page-about .honor h2 {
  margin: 10px 0 14px;
  font-size: clamp(22px, 4.8vw, 34px);
  line-height: 1.24;
  font-weight: 800;
  color: var(--ink);
}

.page-about .honor p {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  color: var(--about-ink-soft);
}

.page-about .honor__tags {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  position: relative;
  z-index: 2;
}

.page-about .honor__tag {
  position: relative;
}

.page-about .honor__tag-name {
  display: inline-block;
  padding: 6px 13px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .06em;
  white-space: nowrap;
  transition: background-color .2s ease, color .2s ease;
}

.page-about .honor__tag:hover .honor__tag-name,
.page-about .honor__tag:focus-within .honor__tag-name {
  background: var(--teal);
  color: #ffffff;
}

.page-about .honor__tip {
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  z-index: 6;
  width: min(240px, 74vw);
  padding: 10px 12px;
  border-radius: var(--r-sm);
  background: var(--ink);
  color: var(--text);
  font-size: 12px;
  line-height: 1.65;
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}

.page-about .honor__tag:hover .honor__tip,
.page-about .honor__tag:focus-within .honor__tip {
  opacity: 1;
  transform: translateY(0);
}

/* 团队 */
.page-about .team {
  display: grid;
  gap: 22px;
  margin-top: 20px;
}

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

.page-about .team__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .team__step {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--about-line);
  border-radius: var(--r-md);
  background: var(--mid);
}

.page-about .team__step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-about .team__step-body h3 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.page-about .team__step-body p {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--about-body);
}

/* 结尾引导 */
.page-about .about-cta {
  margin-top: 26px;
  padding: 30px 22px 32px;
  border: 1px solid var(--about-line);
  border-radius: var(--r-lg);
  background: linear-gradient(116deg, rgba(53, 242, 208, .16), rgba(255, 179, 71, .1) 58%, rgba(7, 26, 43, 0));
}

.page-about .about-cta h2 {
  margin: 0 0 10px;
  font-size: clamp(21px, 4.6vw, 30px);
  line-height: 1.25;
  font-weight: 800;
  color: var(--text);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 56ch;
  font-size: 14px;
  color: var(--about-body);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-about .about-cta__actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

/* 滚动显现（渐进增强） */
.has-js .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .55s ease, transform .55s ease;
}

.has-js .page-about [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* 响应式 */
@media (min-width: 720px) {
  .page-about .stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .reach__row {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }

  .page-about .honor {
    padding: 34px 30px 36px;
  }
}

@media (min-width: 900px) {
  .page-about {
    padding-bottom: 84px;
  }

  .page-about .about-hero {
    padding: 34px 0 52px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, .85fr);
    align-items: end;
    gap: 44px;
  }

  .page-about .about-hero__figure {
    padding: 24px 26px 26px;
  }

  .page-about .about-body {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 52px;
    padding-top: 22px;
  }

  .page-about .about-index {
    position: sticky;
    top: 28px;
    align-self: start;
    border-bottom: 0;
    padding-bottom: 0;
  }

  .page-about .about-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-about .about-index__link {
    width: 100%;
    border: 0;
    border-left: 2px solid var(--about-line);
    border-radius: 0;
    padding: 9px 0 9px 13px;
    background: transparent;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible {
    border-left-color: var(--cyan);
    background: rgba(53, 242, 208, .06);
  }

  .page-about .about-sec {
    padding: 46px 0;
  }

  .page-about .team {
    grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
    align-items: start;
    gap: 34px;
  }

  .page-about .about-cta {
    padding: 40px 36px 42px;
    margin-top: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .has-js .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .honor__tip,
  .page-about .about-index__link,
  .page-about .honor__tag-name {
    transition: none;
  }
}
<<<END>>>