.page-about{
  --about-rule: rgba(53, 224, 208, 0.22);
  --about-grid-line: rgba(24, 58, 90, 0.75);
  color: var(--ice);
}

.page-about .about-head{
  margin: 0 0 clamp(1.5rem, 1rem + 2vw, 2.75rem);
  max-width: 44rem;
}

.page-about .about-head__note{
  margin: 0.75rem 0 0;
  color: var(--mist);
  font-size: var(--fs-small);
  line-height: 1.85;
}

.page-about .about-head--split{
  max-width: none;
  display: grid;
  gap: 0.85rem;
}

@media (min-width: 56rem){
  .page-about .about-head--split{
    grid-template-columns: minmax(0, 1fr) minmax(0, 21rem);
    align-items: end;
    gap: 2.5rem;
  }
  .page-about .about-head--split .about-head__note{
    margin: 0 0 0.35rem;
  }
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  position: relative;
  isolation: isolate;
  background-color: var(--arena);
  background-image:
    linear-gradient(to right, var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--about-grid-line) 1px, transparent 1px);
  background-size: clamp(2.75rem, 7vw, 4.5rem) clamp(2.75rem, 7vw, 4.5rem);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-hero::after{
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 18% 0%, rgba(14, 34, 59, 0.6), transparent 62%),
    linear-gradient(to bottom, rgba(7, 20, 38, 0.15), var(--arena) 94%);
}

.page-about .about-hero__inner{
  display: grid;
  gap: 2rem;
  padding-block: 0.5rem clamp(1.75rem, 1.2rem + 2.5vw, 3rem);
}

@media (min-width: 62rem){
  .page-about .about-hero__inner{
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: end;
    column-gap: clamp(2rem, 4vw, 4rem);
    padding-block: 1.25rem clamp(2.5rem, 2rem + 2vw, 3.75rem);
  }
}

.page-about .about-facts{
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr));
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-facts li{
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1rem 1.1rem;
  background: rgba(14, 34, 59, 0.85);
}

.page-about .about-facts__num{
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 1.15rem + 1.2vw, 2.1rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--orange);
}

.page-about .about-facts li:nth-child(2) .about-facts__num{
  color: var(--gold);
}

.page-about .about-facts li:nth-child(3) .about-facts__num{
  color: var(--cyan);
}

.page-about .about-facts__label{
  font-size: var(--fs-small);
  line-height: 1.5;
  color: var(--mist);
}

.page-about .about-hero__figure{
  margin: 0;
  max-width: 34rem;
}

.page-about .about-hero__figure .img-frame{
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(53, 224, 208, 0.18);
  box-shadow: 0 26px 60px -34px rgba(0, 0, 0, 0.95);
}

@media (min-width: 62rem){
  .page-about .about-hero__figure{
    max-width: none;
  }
  .page-about .about-hero__figure .img-frame{
    transform: rotate(-1.2deg);
  }
}

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

.page-about .about-hero__caption{
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-align: right;
  color: var(--mist);
}

/* 年份索引 */
.page-about .about-years{
  display: grid;
  gap: 0.65rem;
  padding-block: 1rem 1.6rem;
  border-top: 1px dashed var(--about-rule);
}

.page-about .about-years__label{
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .about-years__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .about-years__list a{
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.9rem;
  border: 1px solid rgba(143, 166, 184, 0.35);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--ice);
  text-decoration: none;
  transition:
    background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.page-about .about-years__list a:hover,
.page-about .about-years__list a:focus-visible{
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

/* ---------- 时间轴 ---------- */
.page-about .about-track{
  padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem);
}

.page-about .milestones{
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.5rem;
  position: relative;
  display: grid;
  gap: clamp(1.75rem, 1.2rem + 2vw, 3rem);
}

.page-about .milestones::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  bottom: 1.5rem;
  width: 1px;
  background: linear-gradient(to bottom, var(--cyan), rgba(53, 224, 208, 0.12) 55%, var(--gold));
}

.page-about .milestone{
  position: relative;
  display: grid;
  gap: 0.9rem;
  scroll-margin-top: 5.5rem;
}

.page-about .milestone::before{
  content: "";
  position: absolute;
  left: -1.5rem;
  top: 0.55rem;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--arena);
  border: 2px solid var(--cyan);
  transform: translateX(-50%);
  box-shadow: 0 0 0 4px rgba(7, 20, 38, 0.9);
}

.page-about .milestone:nth-child(even)::before{
  border-color: var(--gold);
}

.page-about .milestone__mark{
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem;
}

.page-about .milestone__year{
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 1.25rem + 1.8vw, 2.6rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--ice);
}

.page-about .milestone__code{
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  border: 1px solid rgba(255, 194, 74, 0.42);
  border-radius: 999px;
  padding: 0.18rem 0.55rem;
}

.page-about .milestone__body{
  background: var(--panel);
  border: 1px solid rgba(24, 58, 90, 0.9);
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius-lg);
  padding: clamp(1.1rem, 0.9rem + 1vw, 1.75rem);
}

.page-about .milestone:nth-child(even) .milestone__body{
  border-left-color: var(--gold);
}

.page-about .milestone__body h3{
  margin: 0 0 0.6rem;
  font-size: var(--fs-h3);
  line-height: 1.4;
  color: var(--ice);
}

.page-about .milestone__body p{
  margin: 0;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.85;
}

.page-about .milestone__list{
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-about .milestone__list li{
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--ice);
}

.page-about .milestone__list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 0.45rem;
  height: 1px;
  background: var(--cyan);
}

.page-about .milestone__more{
  margin: 1.1rem 0 0;
}

.page-about .milestone__more a{
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.4);
  padding-bottom: 0.15rem;
}

.page-about .milestone__more a:hover,
.page-about .milestone__more a:focus-visible{
  color: var(--gold);
  border-bottom-color: var(--gold);
}

@media (min-width: 60rem){
  .page-about .milestones{
    padding-left: 2rem;
  }
  .page-about .milestone{
    grid-template-columns: 8.5rem minmax(0, 1fr);
    column-gap: 1.75rem;
    align-items: start;
  }
  .page-about .milestone::before{
    left: -2rem;
    top: 0.75rem;
  }
  .page-about .milestone__mark{
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding-top: 0.2rem;
  }
}

/* ---------- 服务网络 ---------- */
.page-about .about-network{
  padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem);
  background: linear-gradient(135deg, rgba(14, 34, 59, 0.95) 0%, rgba(14, 34, 59, 0.35) 48%, transparent 100%);
  border-block: 1px solid rgba(24, 58, 90, 0.7);
}

.page-about .about-network__grid{
  display: grid;
  gap: 2rem;
}

@media (min-width: 62rem){
  .page-about .about-network__grid{
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    align-items: center;
    gap: clamp(2rem, 4vw, 3.5rem);
  }
}

.page-about .about-network__copy{
  margin: 0;
  max-width: 36rem;
  color: var(--mist);
  font-size: var(--fs-body);
  line-height: 1.85;
}

.page-about .about-network__cities{
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .about-network__cities li{
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-sm);
  background: rgba(53, 224, 208, 0.08);
  border: 1px solid rgba(53, 224, 208, 0.26);
  color: var(--ice);
}

.page-about .about-network__figure{
  margin: 0;
  max-width: 34rem;
}

@media (min-width: 62rem){
  .page-about .about-network__figure{
    max-width: none;
  }
}

.page-about .about-network__figure .img-frame{
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(24, 58, 90, 0.95);
}

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

.page-about .about-network__caption{
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 团队 ---------- */
.page-about .about-team{
  padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem);
}

.page-about .about-team__grid{
  display: grid;
  gap: 2rem;
}

@media (min-width: 62rem){
  .page-about .about-team__grid{
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }
}

.page-about .team-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(24, 58, 90, 0.85);
  border: 1px solid rgba(24, 58, 90, 0.85);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .team-item{
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: 0.35rem 0.85rem;
  padding: 1.15rem 1.25rem;
  background: var(--arena);
}

.page-about .team-item__idx{
  grid-row: span 2;
  padding-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--cyan);
}

.page-about .team-item__name{
  margin: 0;
  font-size: var(--fs-h3);
  line-height: 1.4;
  color: var(--ice);
}

.page-about .team-item p{
  grid-column: 2;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-about .about-team__figure .img-frame{
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(24, 58, 90, 0.95);
}

.page-about .about-team__caption{
  margin-top: 0.75rem;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 服务标准与合作 ---------- */
.page-about .about-standard{
  padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem);
  background: radial-gradient(85% 60% at 82% 0%, rgba(255, 122, 61, 0.09), transparent 66%);
}

.page-about .partners{
  list-style: none;
  margin: 0 0 clamp(1.75rem, 1.4rem + 1.5vw, 2.5rem);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
  gap: 1px;
  background: rgba(24, 58, 90, 0.85);
  border: 1px solid rgba(24, 58, 90, 0.85);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .partners li{
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.1rem;
  background: var(--arena);
  font-size: 0.9375rem;
  color: var(--ice);
}

.page-about .partners li::before{
  content: "";
  flex: none;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--orange);
}

.page-about .flow{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(24, 58, 90, 0.85);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

@media (min-width: 52rem){
  .page-about .flow{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 74rem){
  .page-about .flow{
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .flow__step{
  padding: 1.25rem 1.15rem 1.45rem;
  background: var(--panel);
  border-top: 2px solid rgba(53, 224, 208, 0.35);
}

.page-about .flow__step:nth-child(2){
  border-top-color: rgba(255, 194, 74, 0.4);
}

.page-about .flow__step:nth-child(3){
  border-top-color: rgba(255, 122, 61, 0.4);
}

.page-about .flow__num{
  display: block;
  font-family: var(--font-mono);
  font-size: 1.4rem;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--orange);
}

.page-about .flow__step h3{
  margin: 0.7rem 0 0.45rem;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--ice);
}

.page-about .flow__step p{
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 下一阶段 ---------- */
.page-about .about-next{
  padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem);
}

.page-about .about-next__panel{
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 1.2rem + 2vw, 2.75rem);
  border: 1px solid rgba(255, 194, 74, 0.28);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(160deg, rgba(255, 194, 74, 0.08), transparent 46%),
    var(--panel);
}

.page-about .about-next__panel::before{
  content: "";
  position: absolute;
  top: -4rem;
  right: -4rem;
  width: 13rem;
  height: 13rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 122, 61, 0.24), transparent 70%);
  pointer-events: none;
}

.page-about .next-list{
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 48rem){
  .page-about .next-list{
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.6rem 2.5rem;
  }
}

.page-about .next-list li{
  display: grid;
  grid-template-columns: 1.9rem minmax(0, 1fr);
  gap: 0.25rem 0.85rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(24, 58, 90, 0.95);
}

.page-about .next-list__num{
  grid-row: span 2;
  padding-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--gold);
}

.page-about .next-list h3{
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--ice);
}

.page-about .next-list p{
  grid-column: 2;
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 收束 ---------- */
.page-about .about-cta{
  padding-block: clamp(2rem, 1.5rem + 3vw, 4rem);
}

.page-about .about-cta__box{
  display: grid;
  gap: 1rem;
  padding: clamp(1.5rem, 1.2rem + 2vw, 2.75rem);
  border: 1px solid rgba(53, 224, 208, 0.25);
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, rgba(53, 224, 208, 0.13), rgba(7, 20, 38, 0.55) 55%, rgba(255, 194, 74, 0.13));
}

.page-about .about-cta__copy{
  margin: 0;
  max-width: 40rem;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--ice);
}

.page-about .about-cta__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.35rem;
}

.page-about .about-cta__actions .btn{
  text-decoration: none;
}
<<<END>>>