.page-about {
  --about-line: rgba(11, 61, 145, .16);
  --about-gap: clamp(1.5rem, 3.4vw, 3rem);
  background: var(--ice);
  color: var(--ink);
  overflow-x: clip;
}

.page-about h2 {
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 4vw, 2.35rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.012em;
  color: var(--night);
  margin: .35rem 0 .9rem;
}

.page-about h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.35;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(1.25rem, 3vw, 2.5rem) 0 clamp(2.25rem, 5vw, 4rem);
  border-bottom: var(--bd);
  background:
    radial-gradient(120% 100% at 88% -10%, rgba(59, 201, 219, .28), transparent 58%),
    radial-gradient(90% 80% at 0% 12%, rgba(11, 61, 145, .16), transparent 62%),
    var(--ice);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--about-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--about-line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 80%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 80%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
}

.page-about .about-hero__frame {
  position: relative;
  padding: clamp(1.5rem, 4.5vw, 3rem);
  background: #fff;
  border: var(--bd);
  box-shadow: var(--shadow-brand);
  overflow: hidden;
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--cyan) 48%, var(--amber) 100%);
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  top: 20px;
  right: 20px;
  width: 13px;
  height: 13px;
  background: var(--red);
}

.page-about .about-hero__paths {
  position: absolute;
  right: -8%;
  bottom: -16%;
  width: min(62%, 340px);
  height: auto;
  opacity: .55;
  pointer-events: none;
}

.page-about .about-hero h1 {
  position: relative;
  max-width: 15em;
  margin: .55rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6.4vw, 3.4rem);
  font-weight: 800;
  line-height: 1.07;
  letter-spacing: -.015em;
  color: var(--night);
}

.page-about .about-hero h1 span {
  color: var(--blue);
  box-shadow: inset 0 -.2em 0 rgba(242, 169, 0, .55);
}

.page-about .about-hero__lead {
  position: relative;
  max-width: 40em;
  margin: 0 0 1.6rem;
  font-size: 1rem;
  line-height: 1.85;
  color: #33404d;
}

.page-about .about-hero__frame .btn {
  position: relative;
}

.page-about .about-hero__aside {
  padding: clamp(1.25rem, 3vw, 1.9rem);
  background: var(--night);
  color: var(--ice);
  border: var(--bd);
  box-shadow: var(--shadow-hard);
}

.page-about .about-hero__aside-title {
  margin: 0 0 1.1rem;
  font-family: var(--font-serif);
  font-size: .95rem;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-about .about-hero__stats {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .hero-stat {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: .2rem .9rem;
  padding: .85rem 0;
  border-top: 1px dashed rgba(247, 250, 252, .26);
}

.page-about .hero-stat:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .hero-stat__num {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 800;
  line-height: 1;
  color: var(--amber-bright);
}

.page-about .hero-stat__label {
  font-size: .85rem;
  line-height: 1.65;
  color: #c3cfe0;
}

/* ---------- 起点与理念 ---------- */
.page-about .about-origin {
  padding-top: clamp(2.5rem, 6vw, 4.5rem);
}

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
}

.page-about .about-origin__media {
  margin: 0;
  border: var(--bd);
  box-shadow: var(--shadow-hard);
  background: var(--snow);
  overflow: hidden;
}

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

.page-about .about-origin__body p {
  margin: 0 0 1rem;
  line-height: 1.85;
  color: #3b4956;
}

.page-about .about-quote {
  margin: 1.4rem 0 0;
  padding: 1rem 1.25rem;
  border-left: 6px solid var(--amber);
  background: rgba(242, 169, 0, .1);
  font-family: var(--font-serif);
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--blue-deep);
}

/* ---------- 演进时间轴 ---------- */
.page-about .about-timeline {
  background-color: var(--night);
  background-image:
    linear-gradient(to right, rgba(59, 201, 219, .09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(59, 201, 219, .09) 1px, transparent 1px);
  background-size: 72px 72px;
  color: var(--ice);
  border-top: var(--bd);
  border-bottom: var(--bd);
}

.page-about .about-timeline h2 {
  color: var(--ice);
}

.page-about .about-timeline__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
}

.page-about .about-timeline__lead {
  margin: 0;
  font-size: .95rem;
  line-height: 1.85;
  color: #b9c7da;
}

.page-about .about-timeline__figure {
  margin: 1.4rem 0 0;
  border: 2px solid rgba(216, 224, 234, .32);
  background: rgba(11, 61, 145, .32);
  overflow: hidden;
}

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

.page-about .about-timeline__list {
  position: relative;
  margin: 0;
  padding: 0 0 0 1.6rem;
  list-style: none;
  border-left: 2px dashed rgba(59, 201, 219, .45);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: clamp(1.4rem, 3vw, 2.1rem);
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1.6rem - 8px);
  top: .55rem;
  width: 14px;
  height: 14px;
  background: var(--amber);
  border: 3px solid var(--night);
  box-shadow: 0 0 0 2px rgba(242, 169, 0, .45);
  transform: rotate(45deg);
}

.page-about .about-timeline__year {
  display: inline-block;
  margin-bottom: .3rem;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-about .about-timeline__item h3 {
  margin: 0 0 .35rem;
  font-size: 1.08rem;
  color: var(--ice);
}

.page-about .about-timeline__item p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: #b9c7da;
}

/* ---------- 通用小节标题 ---------- */
.page-about .about-section-head {
  max-width: 46rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .about-section-head p {
  margin: 0;
  line-height: 1.8;
  color: #3b4956;
}

/* ---------- 服务原则 ---------- */
.page-about .about-principles__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .principle {
  position: relative;
  padding: 1.4rem 1.3rem 1.5rem;
  background: #fff;
  border: var(--bd);
  box-shadow: var(--shadow-hard);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}

.page-about .principle__num {
  display: inline-block;
  margin-bottom: .55rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--red);
}

.page-about .principle h3 {
  margin: 0 0 .55rem;
  font-size: 1.1rem;
  color: var(--night);
}

.page-about .principle p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: #3b4956;
}

.page-about .principle__note {
  margin: .9rem 0 0;
  padding-top: .8rem;
  border-top: 1px dashed rgba(31, 41, 51, .3);
  font-size: .86rem;
  color: #4a5866;
}

.page-about .principle__note strong {
  color: var(--blue);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: #fff;
  border-top: var(--bd);
  border-bottom: var(--bd);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
}

.page-about .about-team__lead p {
  margin: 0;
  line-height: 1.85;
  color: #3b4956;
}

.page-about .about-team__figure {
  margin: 1.4rem 0 0;
  border: var(--bd);
  background: var(--ice);
  box-shadow: var(--shadow-brand);
  overflow: hidden;
}

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

.page-about .about-team__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-bottom: var(--bd);
}

.page-about .about-team__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: .35rem 1.5rem;
  padding: 1.1rem .7rem 1.15rem;
  border-top: var(--bd);
  transition: background .18s var(--ease);
}

.page-about .about-team__row h3 {
  margin: 0;
  font-size: 1.05rem;
  color: var(--blue);
}

.page-about .about-team__row p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: #3b4956;
}

/* ---------- 生态与保障 ---------- */
.page-about .about-eco__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
}

.page-about .about-eco__grid p {
  margin: 0;
  line-height: 1.85;
  color: #3b4956;
}

.page-about .about-eco__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-eco__item {
  padding: .55rem 0 .55rem .85rem;
  border-left: 4px solid var(--mist);
}

.page-about .about-eco__item strong {
  display: block;
  font-family: var(--font-display);
  font-size: .98rem;
  color: var(--night);
}

.page-about .about-eco__item span {
  display: block;
  margin-top: .2rem;
  font-size: .84rem;
  line-height: 1.7;
  color: #4a5866;
}

.page-about .about-eco__notes {
  display: grid;
  grid-template-columns: 1fr;
  gap: .9rem;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  padding: clamp(1.1rem, 2.5vw, 1.5rem);
  background: var(--blue);
  color: var(--ice);
  border: var(--bd);
  box-shadow: var(--shadow-hard);
}

.page-about .about-note {
  padding-top: .7rem;
  border-top: 3px solid var(--amber);
}

.page-about .about-note strong {
  display: block;
  margin-bottom: .25rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--amber-bright);
}

.page-about .about-note span {
  font-size: .86rem;
  line-height: 1.7;
  color: #d5e1f2;
}

/* ---------- 典型场景 ---------- */
.page-about .about-scenes__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .scene {
  padding: 1.3rem 1.25rem 1.4rem;
  background: #fff;
  border: var(--bd);
  border-top: 8px solid var(--red);
}

.page-about .scene:nth-child(2) {
  border-top-color: var(--blue);
}

.page-about .scene:nth-child(3) {
  border-top-color: var(--cyan);
}

.page-about .scene:nth-child(4) {
  border-top-color: var(--amber);
}

.page-about .scene__tag {
  display: inline-block;
  margin-bottom: .55rem;
  padding: .16rem .55rem;
  background: var(--snow);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--blue);
}

.page-about .scene h3 {
  margin: 0 0 .4rem;
  font-size: 1.06rem;
  color: var(--night);
}

.page-about .scene p {
  margin: 0;
  font-size: .91rem;
  line-height: 1.78;
  color: #3b4956;
}

/* ---------- 收尾去向 ---------- */
.page-about .about-more__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: linear-gradient(115deg, rgba(11, 61, 145, .95), rgba(10, 18, 32, .97));
  color: var(--ice);
  border: var(--bd);
  box-shadow: var(--shadow-hard);
}

.page-about .about-more__inner h2 {
  color: var(--ice);
}

.page-about .about-more__inner p {
  margin: 0;
  line-height: 1.8;
  color: #c6d4e6;
}

.page-about .about-more__links {
  display: grid;
  gap: .55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-more__links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 48px;
  padding: .6rem .95rem;
  border: 2px solid rgba(216, 224, 234, .45);
  background: rgba(247, 250, 252, .07);
  color: var(--ice);
  font-weight: 600;
  text-decoration: none;
  transition: background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}

.page-about .about-more__links a::after {
  content: "\2192";
  font-family: var(--font-display);
  font-weight: 800;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-eco__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-about .about-principles__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
    padding-bottom: 1.6rem;
  }

  .page-about .principle:nth-child(even) {
    transform: translateY(1.6rem);
  }

  .page-about .principle:hover,
  .page-about .principle:focus-within {
    transform: translate(-2px, -2px);
    box-shadow: 9px 9px 0 rgba(11, 61, 145, .22);
  }

  .page-about .principle:nth-child(even):hover,
  .page-about .principle:nth-child(even):focus-within {
    transform: translate(-2px, calc(1.6rem - 2px));
  }
}

@media (min-width: 760px) {
  .page-about .about-eco__notes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

@media (min-width: 800px) {
  .page-about .about-scenes__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-about .about-team__row {
    grid-template-columns: minmax(0, .34fr) minmax(0, 1fr);
    align-items: start;
    padding: 1.15rem 1rem;
  }

  .page-about .about-team__row:hover,
  .page-about .about-team__row:focus-within {
    background: rgba(242, 169, 0, .14);
  }
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    align-items: center;
  }

  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-about .about-origin__body h2 {
    margin-top: .5rem;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-about .about-timeline__grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-about .about-timeline__intro {
    position: sticky;
    top: 124px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }

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

@media (max-width: 479px) {
  .page-about .about-hero__frame::after {
    display: none;
  }

  .page-about .hero-stat {
    grid-template-columns: 1fr;
    gap: .25rem;
  }
}
<<<END>>>