.page-about{
  --about-gutter: clamp(1.25rem, 5vw, 4rem);
  --about-edge: 1px solid var(--c-line);
  background: var(--c-void);
  color: var(--c-paper);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}
.page-about *,
.page-about *::before,
.page-about *::after{ box-sizing: border-box; }
.page-about img{ display: block; max-width: 100%; height: auto; }
.page-about figure{ margin: 0; }
.page-about h1,
.page-about h2,
.page-about h3{
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  line-height: 1.14;
  margin: 0;
  font-weight: 800;
}
.page-about p{ margin: 0; }

.page-about .about-shell{
  max-width: var(--maxw);
  margin-inline: auto;
  padding: var(--sp-4) var(--about-gutter) 0;
}
.page-about .breadcrumb-list{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-2);
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}
.page-about .breadcrumb-list li + li::before{
  content: "/";
  margin-right: var(--sp-2);
  color: var(--c-line);
}

/* —— 首屏 —— */
.page-about .about-hero{
  position: relative;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: var(--sp-6) var(--about-gutter) var(--sp-8);
  display: grid;
  gap: var(--sp-6);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(54,241,205,.16), transparent 62%),
    radial-gradient(80% 60% at 0% 100%, rgba(255,90,54,.10), transparent 70%);
}
.page-about .about-hero::before{
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(43,92,76,.34) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(43,92,76,.34) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(90% 70% at 70% 20%, #000 0%, transparent 78%);
  pointer-events: none;
}
.page-about .about-hero > *{ position: relative; }
.page-about .about-hero__lead{ display: grid; gap: var(--sp-5); align-content: start; }
.page-about .about-hero h1{
  font-size: clamp(2.1rem, 7.2vw, 4.1rem);
  letter-spacing: -0.03em;
  max-width: 16ch;
}
.page-about .about-hero__lede{
  font-size: 1rem;
  color: var(--c-mist);
  max-width: 42ch;
  padding-left: var(--sp-4);
  border-left: 2px solid var(--c-neon);
}
.page-about .about-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.page-about .about-hero__card{
  position: relative;
  padding: var(--sp-3);
  border: var(--about-edge);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, var(--c-turf), var(--c-pitch) 62%, var(--c-void));
  box-shadow: var(--shadow-low);
}
.page-about .about-hero__frame{
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-shadow);
}
.page-about .about-hero__frame img{
  width: 100%;
  aspect-ratio: 14 / 10;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}
.page-about .about-hero__badge{
  position: absolute;
  top: calc(var(--sp-3) * -1);
  right: var(--sp-5);
  padding: 0.25rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--c-void);
  background: var(--c-neon);
  border-radius: var(--radius-sm);
}
.page-about .about-hero__caption{
  padding: var(--sp-3) var(--sp-2) var(--sp-1);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--c-mist);
}

.page-about .about-stats{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--sp-4);
  grid-column: 1 / -1;
}
.page-about .about-stats__item{
  display: grid;
  gap: 0.15rem;
  padding-left: var(--sp-4);
  border-left: 2px solid var(--c-line);
}
.page-about .about-stats__num{
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 6vw, 2.5rem);
  font-weight: 600;
  line-height: 1;
  color: var(--c-neon-soft);
}
.page-about .about-stats__num small{
  font-size: 0.85rem;
  margin-left: 0.15rem;
  color: var(--c-mist);
  font-weight: 500;
}
.page-about .about-stats__key{
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--c-mist);
}

/* —— 区块骨架 —— */
.page-about .about-section{
  max-width: var(--maxw);
  margin-inline: auto;
  padding: var(--sp-8) var(--about-gutter);
  display: grid;
  gap: var(--sp-6);
}
.page-about .about-section__head{ display: grid; gap: var(--sp-3); max-width: 46ch; }
.page-about .about-section__head h2,
.page-about .about-position h2,
.page-about .about-coverage h2,
.page-about .about-production h2,
.page-about .about-enterprise h2{
  font-size: clamp(1.6rem, 5vw, 2.5rem);
  color: var(--c-paper);
}
.page-about .eyebrow{
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* —— 起点与今天 —— */
.page-about .about-position{ border-top: var(--about-edge); }
.page-about .about-position__body{ display: grid; gap: var(--sp-6); }
.page-about .about-position__text{ display: grid; gap: var(--sp-4); color: var(--c-mist); }
.page-about .about-position__text p:first-child{
  color: var(--c-paper);
  font-size: 1.05rem;
}
.page-about .about-position__cards{ display: grid; gap: var(--sp-4); }
.page-about .about-note{
  position: relative;
  display: grid;
  gap: var(--sp-3);
  padding: var(--sp-5);
  border: var(--about-edge);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(17,56,45,.92), rgba(10,36,28,.92));
  box-shadow: var(--shadow-low);
}
.page-about .about-note::after{
  content: "";
  position: absolute;
  left: var(--sp-5);
  right: var(--sp-5);
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--c-neon), transparent);
  opacity: .55;
}
.page-about .about-note h3{
  font-size: 1.12rem;
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: 0;
}
.page-about .about-note p{
  font-size: 0.92rem;
  color: var(--c-mist);
}
.page-about .about-note .tag{ justify-self: start; }

/* —— 服务版图 —— */
.page-about .about-coverage{
  border-top: var(--about-edge);
  background: linear-gradient(180deg, rgba(10,36,28,.72), transparent 70%);
}
.page-about .about-coverage__band{ display: grid; gap: var(--sp-5); }
.page-about .about-coverage__intro{ display: grid; gap: var(--sp-4); color: var(--c-mist); }
.page-about .about-coverage__intro h2{ color: var(--c-paper); }
.page-about .about-coverage__figure{
  border: var(--about-edge);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-shadow);
}
.page-about .about-coverage__figure img{
  width: 100%;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}
.page-about .about-coverage__caption{
  padding: var(--sp-3) var(--sp-4);
  font-size: 0.8rem;
  color: var(--c-mist);
  border-top: 1px solid var(--c-line);
  background: var(--c-pitch);
}
.page-about .about-scenes{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--sp-3);
}
.page-about .about-scene{
  padding: var(--sp-4);
  border-left: 2px solid var(--c-turf);
  background: rgba(5,19,15,.5);
  display: grid;
  gap: var(--sp-2);
}
.page-about .about-scene h3{
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--c-neon-soft);
}
.page-about .about-scene p{ font-size: 0.88rem; color: var(--c-mist); }

/* —— 内容与数据 —— */
.page-about .about-production{ border-top: var(--about-edge); }
.page-about .about-production__grid{ display: grid; gap: var(--sp-6); }
.page-about .about-production__text{ display: grid; gap: var(--sp-4); color: var(--c-mist); }
.page-about .about-production__text h2{ color: var(--c-paper); }
.page-about .about-facts{
  margin: 0;
  display: grid;
  gap: var(--sp-3);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.page-about .about-facts__cell{
  padding: var(--sp-3);
  border: var(--about-edge);
  border-radius: var(--radius-sm);
  background: rgba(10,36,28,.6);
}
.page-about .about-facts dt{
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--c-mist);
}
.page-about .about-facts dd{
  margin: var(--sp-1) 0 0;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-neon-soft);
}
.page-about .about-production__figure{
  border: var(--about-edge);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-shadow);
}
.page-about .about-production__figure img{
  width: 100%;
  aspect-ratio: 12 / 8;
  object-fit: cover;
  filter: saturate(0.95);
}
.page-about .about-production__figure figcaption{
  padding: var(--sp-3) var(--sp-4);
  font-size: 0.8rem;
  color: var(--c-mist);
  border-top: 1px solid var(--c-line);
  background: var(--c-pitch);
}

/* —— 团队与协作 —— */
.page-about .about-team{ border-top: var(--about-edge); }
.page-about .about-team__lede{ font-size: 0.94rem; color: var(--c-mist); }
.page-about .about-team__grid{ display: grid; gap: var(--sp-6); }
.page-about .about-roles{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-about .about-role{
  display: grid;
  grid-template-columns: 3rem 1fr;
  grid-template-areas:
    "num name"
    "num desc";
  gap: 0.15rem var(--sp-3);
  padding: var(--sp-4) var(--sp-2);
  border-bottom: 1px solid var(--c-line);
  transition: background var(--dur-fast) var(--ease);
}
.page-about .about-role:first-child{ border-top: 1px solid var(--c-line); }
.page-about .about-role:hover{ background: rgba(54,241,205,.05); }
.page-about .about-role__num{
  grid-area: num;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--c-data);
  letter-spacing: 0.02em;
}
.page-about .about-role__name{
  grid-area: name;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--c-paper);
}
.page-about .about-role__desc{
  grid-area: desc;
  font-size: 0.84rem;
  color: var(--c-mist);
}
.page-about .about-partners{
  display: grid;
  gap: var(--sp-3);
  align-content: start;
  padding: var(--sp-5);
  border: var(--about-edge);
  border-radius: var(--radius-lg);
  border-top: 3px solid var(--c-flame);
  background: linear-gradient(165deg, var(--c-turf), var(--c-pitch));
  box-shadow: var(--shadow-low);
}
.page-about .about-partners h3{
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0;
}
.page-about .about-partners p{ font-size: 0.9rem; color: var(--c-mist); }
.page-about .about-partners__note{
  padding-top: var(--sp-3);
  border-top: 1px dashed var(--c-line);
  font-size: 0.82rem;
}
.page-about .about-partners .btn{ justify-self: start; margin-top: var(--sp-2); }

/* —— 里程碑 —— */
.page-about .about-milestones{
  border-top: var(--about-edge);
  background: linear-gradient(180deg, rgba(17,56,45,.55), transparent 72%);
}
.page-about .about-timeline{
  display: block;
  width: 100%;
  height: auto;
  max-height: 64px;
  overflow: visible;
}
.page-about .about-years{
  list-style: none;
  margin: 0;
  padding: 0 0 var(--sp-3);
  display: flex;
  gap: var(--sp-3);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.page-about .about-year{
  flex: 0 0 80%;
  max-width: 320px;
  scroll-snap-align: start;
  display: grid;
  gap: var(--sp-2);
  align-content: start;
  padding: var(--sp-4);
  border: var(--about-edge);
  border-radius: var(--radius);
  background: rgba(5,19,15,.72);
  box-shadow: var(--shadow-low);
}
.page-about .about-year__code{
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--c-neon);
}
.page-about .about-year--honor{ border-top: 3px solid var(--c-amber); }
.page-about .about-year--honor .about-year__code{ color: var(--c-amber); }
.page-about .about-year__title{
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--c-paper);
}
.page-about .about-year__desc{ font-size: 0.85rem; color: var(--c-mist); }

/* —— 企业客户 —— */
.page-about .about-enterprise{ border-top: var(--about-edge); }
.page-about .about-enterprise__panel{
  display: grid;
  gap: var(--sp-6);
  background: linear-gradient(160deg, rgba(17,56,45,.96), rgba(5,19,15,.96));
}
.page-about .about-enterprise__body{ display: grid; gap: var(--sp-4); color: var(--c-mist); }
.page-about .about-enterprise__body h2{ color: var(--c-paper); }
.page-about .about-steps{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--sp-3);
  counter-reset: none;
}
.page-about .about-step{
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: var(--sp-3);
  padding: var(--sp-3) 0;
  border-top: 1px dashed var(--c-line);
}
.page-about .about-step:first-child{ border-top: 0; }
.page-about .about-step__num{
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--c-amber);
}
.page-about .about-step h3{
  font-family: var(--font-body);
  font-size: 0.96rem;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--c-paper);
  margin-bottom: 0.2rem;
}
.page-about .about-step p{ font-size: 0.86rem; }
.page-about .about-enterprise__actions{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-2);
}
.page-about .about-enterprise__side{
  display: grid;
  gap: var(--sp-3);
  align-content: start;
  padding: var(--sp-4);
  border: var(--about-edge);
  border-radius: var(--radius);
  background: rgba(2,8,6,.5);
}
.page-about .about-enterprise__side .tag{ justify-self: start; }
.page-about .about-enterprise__side ul{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--sp-2);
}
.page-about .about-enterprise__side li{
  position: relative;
  padding-left: var(--sp-4);
  font-size: 0.88rem;
  color: var(--c-paper);
}
.page-about .about-enterprise__side li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  background: var(--c-flame);
  border-radius: 1px;
}
.page-about .about-enterprise__meta{
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--c-mist);
  padding-top: var(--sp-3);
  border-top: 1px solid var(--c-line);
}

/* —— 收尾 —— */
.page-about .about-cta{
  padding: var(--sp-8) var(--about-gutter) var(--sp-9);
  background:
    radial-gradient(90% 120% at 12% 0%, rgba(54,241,205,.14), transparent 62%),
    var(--c-pitch);
  border-top: 1px solid var(--c-line);
}
.page-about .about-cta__inner{
  max-width: var(--maxw);
  margin-inline: auto;
  display: grid;
  gap: var(--sp-4);
  justify-items: start;
}
.page-about .about-cta h2{
  font-size: clamp(1.5rem, 5vw, 2.2rem);
  max-width: 20ch;
}
.page-about .about-cta p{
  max-width: 46ch;
  font-size: 0.94rem;
  color: var(--c-mist);
}
.page-about .about-cta__actions{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-2);
}

/* —— 响应式 —— */
@media (min-width: 640px){
  .page-about .about-stats{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-about .about-scenes{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-about .about-facts{ grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-about .about-year{ flex-basis: 46%; }
}

@media (min-width: 900px){
  .page-about .about-hero{
    grid-template-columns: 1.18fr 0.82fr;
    align-items: end;
    padding-top: var(--sp-7);
  }
  .page-about .about-hero h1{ font-size: clamp(2.6rem, 4.6vw, 4.1rem); }
  .page-about .about-hero__lede{ font-size: 1.05rem; }

  .page-about .about-position__body{
    grid-template-columns: 0.9fr 1.1fr;
    gap: var(--sp-7);
    align-items: start;
  }
  .page-about .about-position__cards{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-note--offset{ margin-top: var(--sp-6); }
  .page-about .about-position__cards .about-note:last-child{
    grid-column: 1 / -1;
    margin-right: var(--sp-7);
  }

  .page-about .about-coverage__band{
    grid-template-columns: 1.05fr 0.95fr;
    gap: var(--sp-7);
    align-items: center;
  }
  .page-about .about-scenes{ grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-about .about-scene:nth-child(even){ margin-top: var(--sp-5); }

  .page-about .about-production__grid{
    grid-template-columns: 1.05fr 0.95fr;
    gap: var(--sp-7);
    align-items: start;
  }
  .page-about .about-production__figure{
    position: sticky;
    top: calc(var(--header-h) + var(--sp-5));
  }

  .page-about .about-team__grid{
    grid-template-columns: 1.25fr 0.75fr;
    gap: var(--sp-7);
    align-items: start;
  }

  .page-about .about-years{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    overflow: visible;
    gap: var(--sp-4);
  }
  .page-about .about-year{ flex: none; max-width: none; }

  .page-about .about-enterprise__panel{
    grid-template-columns: 1.35fr 0.65fr;
    gap: var(--sp-7);
    align-items: start;
  }
}

@media (min-width: 1100px){
  .page-about .about-hero{ padding-bottom: var(--sp-9); }
  .page-about .about-section{ padding-block: var(--sp-9); }
}

@media (prefers-reduced-motion: reduce){
  .page-about .about-role{ transition: none; }
}
<<<END>>>