.page-about{
  --about-hero-bg:linear-gradient(135deg, #0B1C2E 0%, #102A43 55%, #1E3A5F 100%);
  --about-card-bg:rgba(255,255,255,0.96);
  --about-border:1px solid #BCCCDC;
  --about-dark-border:1px solid rgba(0,229,160,0.2);
  --about-year-color:#00E5A0;
  --about-line-height:680px;
}

.page-about .container{
  width:100%;
  max-width:var(--content-width);
  margin:0 auto;
  padding-left:var(--page-pad);
  padding-right:var(--page-pad);
}

.page-about .breadcrumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:0.85rem;
  color:rgba(248,250,252,0.7);
  margin-bottom:2rem;
  font-family:var(--font-data);
  letter-spacing:0.05em;
}

.page-about .breadcrumbs a{
  color:rgba(248,250,252,0.7);
  text-decoration:none;
  transition:color .2s ease;
}

.page-about .breadcrumbs a:hover{
  color:var(--color-accent);
}

.page-about .breadcrumbs-current{
  color:var(--color-accent);
}

.page-about .section-kicker{
  display:block;
  font-family:var(--font-data);
  font-size:0.8rem;
  letter-spacing:0.18em;
  color:var(--color-accent);
  margin-bottom:0.6rem;
  font-weight:500;
}

.page-about .section-title{
  font-family:var(--font-head);
  font-size:clamp(1.8rem,4vw,2.8rem);
  font-weight:700;
  line-height:1.1;
  margin-bottom:1rem;
  letter-spacing:0.01em;
}

.page-about .section-lead{
  font-size:0.95rem;
  line-height:1.8;
  color:var(--color-slate);
  max-width:720px;
  margin:0 auto;
}

/* hero */
.page-about .about-hero{
  position:relative;
  background:var(--about-hero-bg);
  padding-top:3.5rem;
  padding-bottom:4rem;
  overflow:hidden;
}

.page-about .about-hero::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  pointer-events:none;
}

.page-about .about-hero-grid{
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background-image:
    linear-gradient(rgba(0,229,160,0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,160,0.12) 1px, transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse at center, transparent 0%, #000 70%);
  pointer-events:none;
}

.page-about .about-hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:2rem;
}

.page-about .about-hero-copy{
  color:var(--color-light);
}

.page-about .about-hero-title{
  font-family:var(--font-head);
  font-size:clamp(2rem,5vw,3.4rem);
  font-weight:700;
  line-height:1.12;
  margin-bottom:1.4rem;
  letter-spacing:0.01em;
  max-width:640px;
}

.page-about .about-hero-lead{
  font-size:1rem;
  line-height:1.9;
  color:rgba(248,250,252,0.85);
  max-width:560px;
  margin-bottom:2rem;
}

.page-about .about-hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:0.8rem;
}

.page-about .btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0.75rem 1.6rem;
  border-radius:8px;
  font-family:var(--font-body);
  font-size:0.92rem;
  font-weight:500;
  text-decoration:none;
  transition:transform .2s ease, box-shadow .2s ease, background-color .2s ease;
  border:1px solid transparent;
}

.page-about .btn--accent{
  background:var(--color-accent);
  color:#0B1C2E;
  font-weight:700;
}

.page-about .btn--accent:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(0,229,160,0.25);
}

.page-about .btn-ghost{
  background:transparent;
  color:var(--color-light);
  border-color:rgba(248,250,252,0.3);
}

.page-about .btn-ghost:hover{
  border-color:var(--color-accent);
  color:var(--color-accent);
}

.page-about .about-hero-visual{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  min-height:220px;
}

.page-about .about-hero-img{
  width:100%;
  height:100%;
  min-height:220px;
  object-fit:cover;
  display:block;
}

/* mission */
.page-about .about-mission{
  background:var(--color-light);
  padding:4.5rem 0;
}

.page-about .about-mission-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:2.5rem;
  align-items:start;
}

.page-about .about-mission-copy .section-title{
  color:var(--color-ink);
}

.page-about .about-mission-text{
  font-size:0.96rem;
  line-height:1.9;
  color:var(--color-slate);
  margin-bottom:1rem;
  max-width:640px;
}

.page-about .about-mission-stats{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1rem;
}

.page-about .about-mission-stats .stat-item{
  background:var(--color-bg-2);
  border-radius:var(--radius);
  padding:1.4rem 1.2rem;
  display:flex;
  flex-direction:column;
  gap:0.3rem;
  box-shadow:0 4px 16px rgba(2,6,12,0.15);
}

.page-about .about-mission-stats .stat-value{
  font-family:var(--font-data);
  font-size:1.9rem;
  font-weight:700;
  color:var(--color-accent);
  line-height:1.2;
}

.page-about .about-mission-stats .stat-unit{
  font-size:1rem;
  margin-left:2px;
}

.page-about .about-mission-stats .stat-label{
  font-size:0.82rem;
  color:rgba(248,250,252,0.7);
}

/* timeline */
.page-about .about-timeline{
  background:var(--color-bg);
  padding:5rem 0;
  position:relative;
}

.page-about .about-timeline::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background-image:
    linear-gradient(rgba(0,229,160,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,160,0.06) 1px, transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}

.page-about .about-timeline .container{
  position:relative;
}

.page-about .about-timeline .section-head{
  text-align:center;
  margin-bottom:3.5rem;
}

.page-about .about-timeline .section-title{
  color:var(--color-light);
}

.page-about .about-timeline .section-lead{
  color:rgba(248,250,252,0.6);
}

.page-about .timeline-wrap{
  position:relative;
}

.page-about .timeline-axis{
  position:absolute;
  left:10px;
  top:0;
  bottom:0;
  width:4px;
  z-index:0;
}

.page-about .timeline-svg{
  width:100%;
  height:100%;
  display:block;
}

.page-about .timeline-list{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:1.8rem;
  padding-left:3rem;
}

.page-about .timeline-item{
  position:relative;
}

.page-about .timeline-item::before{
  content:"";
  position:absolute;
  left:-2.45rem;
  top:1.15rem;
  width:14px;
  height:14px;
  border-radius:50%;
  background:var(--color-bg);
  border:3px solid var(--color-accent);
  box-shadow:0 0 12px rgba(0,229,160,0.4);
  z-index:1;
}

.page-about .timeline-node{
  margin-bottom:0.6rem;
}

.page-about .timeline-year{
  font-family:var(--font-data);
  font-size:1.15rem;
  font-weight:700;
  color:var(--color-accent);
  letter-spacing:0.06em;
}

.page-about .timeline-card{
  background:rgba(30,58,95,0.55);
  border-radius:var(--radius);
  padding:1.3rem 1.4rem;
  border:var(--about-dark-border);
  transition:background-color .25s ease, box-shadow .25s ease;
}

.page-about .timeline-card:hover{
  background:rgba(30,58,95,0.85);
  box-shadow:0 8px 28px rgba(0,229,160,0.12);
}

.page-about .timeline-card-title{
  font-family:var(--font-head);
  font-size:1.15rem;
  color:var(--color-light);
  margin-bottom:0.4rem;
  letter-spacing:0.02em;
}

.page-about .timeline-card-text{
  font-size:0.88rem;
  line-height:1.75;
  color:rgba(248,250,252,0.7);
}

/* data section */
.page-about .about-data{
  background:var(--color-light);
  padding:5rem 0;
}

.page-about .about-data .section-head{
  text-align:center;
  margin-bottom:3rem;
}

.page-about .about-data .section-title{
  color:var(--color-ink);
}

.page-about .about-data-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:2.5rem;
}

.page-about .about-data-chart{
  background:var(--color-bg);
  border-radius:var(--radius-lg);
  padding:1.8rem 1.4rem 1.2rem;
}

.page-about .about-chart-wrap{
  width:100%;
  overflow:hidden;
}

.page-about .about-chart-svg{
  display:block;
  width:100%;
  height:auto;
  max-height:260px;
}

.page-about .chart-grid-h,
.page-about .chart-grid-v{
  stroke:rgba(188,204,220,0.15);
  stroke-width:1;
  fill:none;
}

.page-about .chart-line{
  fill:none;
  stroke:var(--color-accent);
  stroke-width:3;
  stroke-linecap:round;
  stroke-linejoin:round;
}

.page-about .chart-dot{
  fill:var(--color-bg);
  stroke:var(--color-accent);
  stroke-width:2;
}

.page-about .chart-dot--current{
  fill:var(--color-accent);
  stroke:none;
}

.page-about .about-chart-labels{
  display:flex;
  justify-content:space-between;
  margin-top:0.5rem;
  padding:0 0.2rem;
  font-family:var(--font-data);
  font-size:0.72rem;
  color:rgba(248,250,252,0.5);
}

.page-about .about-chart-caption{
  margin-top:0.8rem;
  text-align:center;
  font-size:0.8rem;
  color:rgba(248,250,252,0.6);
}

.page-about .about-data-metrics{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1rem;
}

.page-about .metric-block{
  background:var(--color-bg-2);
  border-radius:var(--radius);
  padding:1.3rem 1.2rem;
  display:flex;
  flex-direction:column;
  gap:0.25rem;
  border-top:3px solid var(--color-accent);
}

.page-about .metric-value{
  font-family:var(--font-data);
  font-size:1.8rem;
  font-weight:700;
  color:var(--color-accent);
}

.page-about .metric-unit{
  font-size:1rem;
  margin-left:2px;
}

.page-about .metric-label{
  font-size:0.84rem;
  font-weight:500;
  color:rgba(248,250,252,0.85);
}

.page-about .metric-desc{
  font-size:0.8rem;
  line-height:1.6;
  color:rgba(248,250,252,0.55);
}

/* cdn */
.page-about .about-cdn{
  background:var(--color-bg);
  padding:5rem 0;
  position:relative;
}

.page-about .about-cdn::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background-image:
    linear-gradient(rgba(0,229,160,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,160,0.06) 1px, transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}

.page-about .about-cdn .container{
  position:relative;
}

.page-about .about-cdn-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:2rem;
  align-items:center;
}

.page-about .about-cdn-image{
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
}

.page-about .about-cdn-img{
  width:100%;
  height:auto;
  max-height:400px;
  object-fit:cover;
  display:block;
}

.page-about .about-cdn-copy{
  padding:0.5rem 0;
}

.page-about .about-cdn-copy .section-title{
  color:var(--color-light);
  margin-bottom:0.8rem;
}

.page-about .about-cdn-copy .section-kicker{
  color:var(--color-accent);
}

.page-about .about-cdn-text{
  font-size:0.95rem;
  line-height:1.9;
  color:rgba(248,250,252,0.75);
  margin-bottom:1.4rem;
}

.page-about .about-cdn-list{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:0.6rem;
}

.page-about .about-cdn-item{
  padding-left:1.6rem;
  position:relative;
  font-size:0.9rem;
  line-height:1.6;
  color:rgba(248,250,252,0.8);
}

.page-about .about-cdn-item::before{
  content:"";
  position:absolute;
  left:0;
  top:0.55em;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--color-accent);
  box-shadow:0 0 8px rgba(0,229,160,0.6);
}

/* team */
.page-about .about-team{
  background:var(--color-light);
  padding:5rem 0;
}

.page-about .about-team .section-head{
  text-align:center;
  margin-bottom:3rem;
}

.page-about .about-team .section-title{
  color:var(--color-ink);
}

.page-about .about-team-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:1.2rem;
}

.page-about .team-card{
  background:var(--color-card-bg);
  background-color:#fff;
  border:var(--about-border);
  border-radius:var(--radius-lg);
  padding:1.8rem 1.4rem;
  text-align:center;
  transition:transform .25s ease, box-shadow .25s ease;
}

.page-about .team-card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 36px rgba(2,6,12,0.1);
}

.page-about .team-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:64px;
  height:64px;
  margin:0 auto 1rem;
  border-radius:16px;
}

.page-about .team-icon--analysis{
  background:rgba(0,229,160,0.12);
}

.page-about .team-icon--engineer{
  background:rgba(255,107,53,0.12);
}

.page-about .team-icon--product{
  background:rgba(247,201,72,0.12);
}

.page-about .team-svg{
  width:44px;
  height:44px;
  display:block;
}

.page-about .team-card-title{
  font-family:var(--font-head);
  font-size:1.2rem;
  font-weight:700;
  color:var(--color-ink);
  margin-bottom:0.3rem;
}

.page-about .team-count{
  display:block;
  font-family:var(--font-data);
  font-size:1.5rem;
  font-weight:700;
  color:var(--color-accent-2);
  margin-bottom:0.6rem;
}

.page-about .team-count .team-unit{
  font-size:0.9rem;
  margin-left:2px;
}

.page-about .team-card-desc{
  font-size:0.86rem;
  line-height:1.7;
  color:var(--color-slate);
}

/* certifications */
.page-about .about-cert{
  background:var(--color-bg);
  padding:5rem 0 4.5rem;
}

.page-about .about-cert .section-head{
  text-align:center;
  margin-bottom:3rem;
}

.page-about .about-cert .section-title{
  color:var(--color-light);
}

.page-about .about-cert .section-lead{
  color:rgba(248,250,252,0.6);
}

.page-about .about-cert-list{
  display:grid;
  grid-template-columns:1fr;
  gap:1.2rem;
}

.page-about .cert-item{
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:1.8rem 1.2rem;
  border-radius:var(--radius-lg);
  background:rgba(30,58,95,0.4);
  border:var(--about-dark-border);
  text-align:center;
  transition:background-color .25s ease, box-shadow .25s ease;
}

.page-about .cert-item:hover{
  background:rgba(30,58,95,0.7);
  box-shadow:0 8px 28px rgba(0,229,160,0.1);
}

.page-about .cert-badge{
  margin-bottom:0.8rem;
}

.page-about .cert-svg{
  width:72px;
  height:72px;
  display:block;
}

.page-about .cert-name{
  font-family:var(--font-head);
  font-size:1.1rem;
  color:var(--color-light);
  margin-bottom:0.2rem;
}

.page-about .cert-desc{
  font-size:0.8rem;
  color:rgba(248,250,252,0.5);
}

.page-about .cert-item:nth-child(2) .cert-svg{
  stroke:var(--color-accent-2) !important;
}

.page-about .cert-item:nth-child(3) .cert-svg{
  stroke:var(--color-warn) !important;
}

/* inner links */
.page-about .about-inner-links{
  background:var(--color-light);
  padding:4.5rem 0;
}

.page-about .about-inner-links .section-head{
  text-align:center;
  margin-bottom:2.5rem;
}

.page-about .about-inner-links .section-title{
  color:var(--color-ink);
}

.page-about .about-inner-links-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:1rem;
}

.page-about .inner-link-card{
  display:block;
  background:#fff;
  border:var(--about-border);
  border-radius:var(--radius);
  padding:1.3rem 1.4rem;
  text-decoration:none;
  transition:border-color .2s ease, box-shadow .2s ease, transform .2s ease;
  position:relative;
}

.page-about .inner-link-card:hover{
  border-color:var(--color-accent);
  box-shadow:0 8px 24px rgba(0,229,160,0.1);
  transform:translateY(-2px);
}

.page-about .inner-link-label{
  display:block;
  font-family:var(--font-head);
  font-size:1.1rem;
  font-weight:700;
  color:var(--color-ink);
  margin-bottom:0.3rem;
}

.page-about .inner-link-desc{
  font-size:0.85rem;
  line-height:1.6;
  color:var(--color-slate);
  margin-bottom:0.5rem;
}

.page-about .inner-link-arrow{
  position:absolute;
  top:1.3rem;
  right:1.2rem;
  color:var(--color-accent-2);
  font-size:1.3rem;
  transition:transform .2s ease;
}

.page-about .inner-link-card:hover .inner-link-arrow{
  transform:translateX(4px);
}

/* media queries */
@media (min-width:640px){
  .page-about .about-mission-stats{
    grid-template-columns:repeat(4,1fr);
  }

  .page-about .about-data-metrics{
    grid-template-columns:repeat(2,1fr);
  }

  .page-about .about-team-grid{
    grid-template-columns:repeat(3,1fr);
  }

  .page-about .about-cert-list{
    grid-template-columns:repeat(3,1fr);
  }

  .page-about .about-inner-links-grid{
    grid-template-columns:repeat(2,1fr);
  }
}

@media (min-width:960px){
  .page-about .about-hero{
    padding-top:5rem;
    padding-bottom:6rem;
  }

  .page-about .about-hero-inner{
    grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);
    gap:4rem;
    align-items:center;
  }

  .page-about .about-hero-title{
    font-size:clamp(2.2rem,4vw,3.8rem);
  }

  .page-about .about-mission-grid{
    grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);
    gap:4rem;
  }

  .page-about .timeline-wrap{
    margin:0 auto;
    max-width:880px;
  }

  .page-about .timeline-axis{
    left:50%;
    transform:translateX(-50%);
  }

  .page-about .timeline-list{
    padding-left:0;
  }

  .page-about .timeline-item{
    display:grid;
    grid-template-columns:1fr 44px 1fr;
    align-items:flex-start;
    gap:0.8rem;
  }

  .page-about .timeline-item::before{
    position:absolute;
    left:50%;
    top:1.15rem;
    transform:translateX(-50%);
    width:16px;
    height:16px;
  }

  .page-about .timeline-node{
    grid-column:1;
    text-align:right;
    padding-top:0.5rem;
  }

  .page-about .timeline-item:nth-child(even) .timeline-node{
    grid-column:3;
    grid-row:1;
    text-align:left;
  }

  .page-about .timeline-card{
    grid-column:1;
  }

  .page-about .timeline-item:nth-child(even) .timeline-card{
    grid-column:3;
    grid-row:2;
  }

  .page-about .timeline-item:nth-child(odd) .timeline-card{
    grid-column:1;
    grid-row:2;
  }

  .page-about .about-data-grid{
    grid-template-columns:1.1fr 1fr;
    gap:2rem;
    align-items:stretch;
  }

  .page-about .about-cdn-grid{
    grid-template-columns:1fr 1fr;
    gap:3.5rem;
  }

  .page-about .about-cdn-image{
    order:1;
  }

  .page-about .about-cdn-copy{
    order:2;
  }
}

@media (max-width:480px){
  .page-about .about-hero-actions{
    flex-direction:column;
  }

  .page-about .about-hero-actions .btn{
    width:100%;
  }

  .page-about .timeline-card-title{
    font-size:1.05rem;
  }

  .page-about .about-chart-labels{
    font-size:0.62rem;
  }

  .page-about .metric-value{
    font-size:1.5rem;
  }
}

.page-about {
  --color-card-bg: var(--color-bg);
}