.page-about{
  background: var(--c-navy);
  color: var(--c-gray);
}

/* ---------- Hero ---------- */
.page-about .about-hero{
  position: relative;
  overflow: hidden;
  padding: 32px 0 40px;
  background:
    radial-gradient(ellipse at 82% 18%, rgba(57,255,20,.08) 0%, transparent 52%),
    linear-gradient(rgba(138,155,168,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(138,155,168,.08) 1px, transparent 1px),
    var(--c-navy);
  background-size: auto, 28px 28px, 28px 28px, auto;
}
.page-about .about-hero::after{
  content: "";
  position: absolute;
  top: 0;
  right: -60px;
  width: 240px;
  height: 460px;
  background: rgba(57,255,20,.045);
  border-left: 2px solid rgba(57,255,20,.16);
  transform: skewX(-14deg);
  pointer-events: none;
}
.page-about .about-hero .container{
  position: relative;
  z-index: 1;
}
.page-about .about-hero__grid{
  display: grid;
  gap: 32px;
  margin-top: 24px;
}
.page-about .about-hero__kicker{
  letter-spacing: 2px;
  margin-bottom: 14px;
}
.page-about .about-hero__title{
  font-size: clamp(34px, 7vw, 56px);
  line-height: 1.08;
  letter-spacing: .5px;
  max-width: 540px;
  margin: 0;
  color: var(--c-cream);
}
.page-about .about-dot{
  color: var(--c-red);
  margin-left: 2px;
}
.page-about .about-hero__lead{
  margin: 16px 0 26px;
  max-width: 560px;
}
.page-about .about-hero__cta{
  margin-top: 4px;
}
.page-about .about-hero__stats{
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding-top: 8px;
}
.page-about .about-hero__stats::before{
  content: "KEY-METRICS / SNAPSHOT";
  position: absolute;
  top: -8px;
  left: 0;
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--c-green);
  background: var(--c-navy);
  padding: 0 8px;
  z-index: 2;
}
.page-about .about-hero__stat{
  border: 1px solid rgba(138,155,168,.35);
  border-left: 4px solid var(--c-green);
  background: rgba(13,43,80,.55);
  padding: 16px 18px;
  box-shadow: var(--shadow-hard);
}
.page-about .about-hero__stat-num{
  font-family: var(--font-head);
  font-size: 36px;
  line-height: 1;
  color: var(--c-green);
  display: block;
}
.page-about .about-hero__stat-unit{
  display: block;
  font-size: 14px;
  color: var(--c-cream);
  margin-top: 8px;
}
.page-about .about-hero__stat-meta{
  display: block;
  font-size: 13px;
  color: var(--c-gray);
  margin-top: 4px;
}

/* ---------- Anchors ---------- */
.page-about .about-anchors{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 30px;
  border-top: 1px solid rgba(138,155,168,.25);
  padding-top: 22px;
}
.page-about .about-anchors a{
  color: var(--c-cream);
  text-decoration: none;
  font-size: 14px;
  padding: 10px 12px;
  border: 1px solid rgba(138,155,168,.3);
  display: flex;
  align-items: baseline;
  gap: 10px;
  transition: border-color .2s, background .2s;
}
.page-about .about-anchors a span{
  font-family: var(--font-head);
  color: var(--c-green);
  font-size: 16px;
}
.page-about .about-anchors a:hover,
.page-about .about-anchors a:focus-visible{
  border-color: var(--c-green);
  background: rgba(57,255,20,.06);
  outline: none;
}
.page-about .about-anchors a:focus-visible{
  outline: 2px solid var(--c-green);
  outline-offset: 2px;
}

/* ---------- 章节标题 ---------- */
.page-about .about-section-head{
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 34px;
}
.page-about .section-title{
  margin: 0;
  color: var(--c-cream);
}
.page-about .section--cream .section-title{
  color: var(--c-ink);
}
.page-about .num-badge{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  height: 56px;
  padding: 0 12px;
  background: rgba(57,255,20,.08);
  border: 2px solid rgba(57,255,20,.4);
  font-family: var(--font-head);
  font-size: 22px;
  color: var(--c-green);
  transform: skewX(-6deg);
  box-shadow: 4px 4px 0 rgba(0,0,0,.35);
  flex: none;
}
.page-about .section--cream .num-badge{
  background: rgba(43,30,22,.04);
  border-color: rgba(43,30,22,.4);
  color: var(--c-ink);
  box-shadow: 4px 4px 0 rgba(43,30,22,.12);
}

/* ---------- 公司概况 ---------- */
.page-about .about-overview__grid{
  display: grid;
  gap: 28px;
  align-items: center;
}
.page-about .about-overview__frame{
  margin: 0;
  position: relative;
  border: 2px solid rgba(138,155,168,.5);
  background: var(--c-navy-deep);
  box-shadow: 10px 10px 0 rgba(0,0,0,.25);
  overflow: hidden;
}
.page-about .about-overview__frame img{
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-overview__frame figcaption{
  font-size: 13px;
  color: var(--c-gray);
  padding: 10px 14px;
  border-top: 1px solid rgba(138,155,168,.3);
  background: rgba(10,30,61,.8);
}
.page-about .about-overview__frame::after{
  content: "DATA-DC / NODE-01";
  position: absolute;
  top: 12px;
  right: 12px;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--c-green);
  background: rgba(10,30,61,.8);
  border: 1px solid rgba(57,255,20,.4);
  padding: 4px 8px;
}
.page-about .about-overview__content p{
  font-size: 16px;
  line-height: 1.75;
  margin: 0 0 14px;
}
.page-about .about-point-list{
  list-style: none;
  padding: 0;
  margin: 18px 0 26px;
  border-top: 1px solid rgba(138,155,168,.25);
}
.page-about .about-point-list li{
  padding: 10px 0 10px 26px;
  border-bottom: 1px solid rgba(138,155,168,.25);
  position: relative;
  font-size: 15px;
  color: var(--c-cream);
}
.page-about .about-point-list li::before{
  content: "";
  position: absolute;
  left: 2px;
  top: 16px;
  width: 8px;
  height: 8px;
  background: var(--c-green);
  transform: skewX(-8deg);
}

/* ---------- 发展历程 ---------- */
.page-about .timeline-intro{
  font-size: 17px;
  color: var(--c-ink);
  max-width: 640px;
  line-height: 1.7;
  margin: 0 0 30px;
}
.page-about .timeline{
  position: relative;
}
.page-about .timeline::before{
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 39px;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-red), rgba(43,30,22,.25));
}
.page-about .timeline-item{
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 20px;
  padding-bottom: 22px;
  position: relative;
  border-radius: 2px;
  transition: transform .2s ease;
}
.page-about .timeline-item:focus-visible{
  outline: 2px solid var(--c-red);
  outline-offset: 4px;
}
.page-about .timeline-col{
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 4px;
}
.page-about .timeline-year{
  font-family: var(--font-head);
  font-size: 18px;
  color: var(--c-ink);
  white-space: nowrap;
  margin-bottom: 10px;
  letter-spacing: .5px;
}
.page-about .timeline-dot{
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-ink);
  border: 3px solid var(--c-cream);
  box-shadow: 0 0 0 2px var(--c-ink);
  transition: background .2s, box-shadow .2s, transform .2s;
}
.page-about .timeline-item:is(:hover, :focus-within) .timeline-dot{
  background: var(--c-red);
  box-shadow: 0 0 0 2px var(--c-ink), 0 0 0 6px rgba(255,74,28,.2);
  transform: scale(1.12);
}
.page-about .timeline-item:is(:hover, :focus-within) .timeline-title{
  color: var(--c-red);
}
.page-about .timeline-item:is(:hover, :focus-within) .timeline-content{
  transform: translateX(4px);
}
.page-about .timeline-content{
  transition: transform .2s ease;
}
.page-about .timeline-title{
  font-family: var(--font-head);
  font-size: 20px;
  color: var(--c-ink);
  margin: 0 0 6px;
  transition: color .2s ease;
}
.page-about .timeline-content p{
  font-size: 15px;
  color: rgba(43,30,22,.78);
  line-height: 1.65;
  margin: 0;
}
.page-about .timeline-figure{
  margin: 14px 0 0;
  border: 2px solid var(--c-ink);
  background: rgba(43,30,22,.05);
  max-width: 400px;
}
.page-about .timeline-figure img{
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .timeline-figure figcaption{
  font-size: 13px;
  color: rgba(43,30,22,.72);
  padding: 8px 12px;
  border-top: 1px solid rgba(43,30,22,.2);
}

/* ---------- 团队与文化 ---------- */
.page-about .about-team__grid{
  display: grid;
  gap: 28px;
  align-items: center;
  margin-bottom: 30px;
}
.page-about .about-team__frame{
  margin: 0;
  border: 2px solid rgba(57,255,20,.35);
  background: var(--c-navy-deep);
  position: relative;
  overflow: hidden;
}
.page-about .about-team__frame img{
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-team__frame::after{
  content: "TEAM-MONITOR / 120P";
  position: absolute;
  right: 10px;
  bottom: 10px;
  font-size: 12px;
  color: var(--c-green);
  background: rgba(10,30,61,.8);
  border: 1px solid rgba(57,255,20,.35);
  padding: 4px 8px;
  letter-spacing: 1px;
}
.page-about .about-team__content p{
  font-size: 16px;
  line-height: 1.75;
  margin: 0 0 14px;
}
.page-about .team-stats{
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-about .team-stat{
  border: 1px solid rgba(138,155,168,.35);
  background: rgba(13,43,80,.5);
  padding: 18px;
  position: relative;
  transition: transform .2s ease;
}
.page-about .team-stat::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--c-green);
}
.page-about .team-stat:is(:hover, :focus-within){
  transform: translateY(-3px);
}
.page-about .team-stat-num{
  font-family: var(--font-head);
  font-size: 32px;
  color: var(--c-green);
  display: block;
  line-height: 1.1;
}
.page-about .team-stat-label{
  display: block;
  font-size: 14px;
  color: var(--c-gray);
  margin-top: 8px;
}

/* ---------- 荣誉与认证 ---------- */
.page-about .honor-grid{
  display: grid;
  gap: 18px;
}
.page-about .honor-card{
  background: var(--c-cream);
  border: 2px solid var(--c-ink);
  box-shadow: 6px 6px 0 rgba(43,30,22,.16);
  padding: 24px;
  position: relative;
  transform: skewX(-1deg);
  transition: transform .2s ease;
}
.page-about .honor-card:is(:hover, :focus-within){
  transform: skewX(-1deg) translateY(-4px);
}
.page-about .honor-code{
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--c-red);
  display: block;
}
.page-about .honor-title{
  font-family: var(--font-head);
  font-size: 24px;
  color: var(--c-ink);
  margin: 10px 0 8px;
}
.page-about .honor-card p{
  font-size: 15px;
  line-height: 1.6;
  color: rgba(43,30,22,.82);
  margin: 0;
}

/* ---------- 合作生态 ---------- */
.page-about .ecosystem-grid{
  display: grid;
  gap: 26px;
  align-items: start;
}
.page-about .ecosystem-content p{
  font-size: 16px;
  line-height: 1.7;
  margin: 0 0 14px;
}
.page-about .eco-label{
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--c-green);
  margin: 18px 0 10px;
  text-transform: uppercase;
}
.page-about .eco-list{
  list-style: none;
  padding: 0;
  margin: 0 0 26px;
  border-top: 1px solid rgba(138,155,168,.25);
}
.page-about .eco-list li{
  padding: 14px 0;
  border-bottom: 1px solid rgba(138,155,168,.25);
}
.page-about .eco-list strong{
  display: block;
  font-family: var(--font-head);
  font-size: 16px;
  color: var(--c-cream);
  margin-bottom: 4px;
}
.page-about .eco-list span{
  font-size: 14px;
  color: var(--c-gray);
  line-height: 1.6;
}
.page-about .eco-aside{
  border: 1px solid rgba(57,255,20,.35);
  background: rgba(13,43,80,.7);
  padding: 22px;
  box-shadow: var(--shadow-hard);
}
.page-about .eco-aside-title{
  font-family: var(--font-head);
  font-size: 22px;
  color: var(--c-cream);
  margin: 0 0 16px;
}
.page-about .eco-facts{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 0 0 16px;
}
.page-about .eco-facts div{
  border: 1px solid rgba(138,155,168,.3);
  background: rgba(10,30,61,.4);
  padding: 12px;
}
.page-about .eco-facts dt{
  font-size: 12px;
  color: var(--c-gray);
  margin-bottom: 4px;
}
.page-about .eco-facts dd{
  font-family: var(--font-head);
  font-size: 26px;
  color: var(--c-green);
  margin: 0;
  line-height: 1.2;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px){
  .page-about .about-hero{
    padding: 40px 0 48px;
  }
  .page-about .about-hero__grid{
    grid-template-columns: 1.1fr .9fr;
    gap: 40px;
    align-items: center;
    margin-top: 32px;
  }
  .page-about .about-hero__stats{
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
  .page-about .about-anchors{
    grid-template-columns: repeat(5, 1fr);
    margin-top: 40px;
  }
  .page-about .about-overview__grid{
    grid-template-columns: .9fr 1.1fr;
    gap: 40px;
  }
  .page-about .about-team__grid{
    grid-template-columns: .9fr 1.1fr;
    gap: 40px;
  }
  .page-about .team-stats{
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }
  .page-about .honor-grid{
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }
  .page-about .ecosystem-grid{
    grid-template-columns: 1.05fr .95fr;
    gap: 40px;
  }
}

@media (min-width: 1120px){
  .page-about .about-hero{
    padding: 52px 0 64px;
  }
  .page-about .timeline-item{
    gap: 32px;
  }
}