.page-about{
  --about-accent:#ff6b35;
  --about-lime:#c6ff00;
  --about-primary:#1a2a3a;
  --about-panel:#14202b;
  --about-border:#2a3f51;
  --about-text:#f5f7fa;
  --about-muted:#a6b7c4;
  --about-font-data:'JetBrains Mono','SFMono-Regular',Consolas,monospace;
  --about-font-head:'Impact','Arial Black','Noto Sans SC',sans-serif;
  --about-font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --about-radius:12px;
  --about-max:1440px;
  background:
    linear-gradient(115deg, rgba(255,107,53,0.08) 0%, transparent 32%),
    linear-gradient(310deg, rgba(198,255,0,0.05) 8%, transparent 40%),
    var(--about-primary);
  color: var(--about-text);
  font-family: var(--about-font-body);
  line-height: 1.7;
  overflow-x: clip;
}
.page-about *,
.page-about *::before,
.page-about *::after{
  box-sizing:border-box;
}
.page-about a{
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}
.page-about a:hover{
  text-decoration-color: var(--about-accent);
}
.page-about h1,
.page-about h2,
.page-about h3{
  font-family: var(--about-font-head);
  line-height: 1.12;
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.page-about img{
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
.page-about .data-chip{
  font-family: var(--about-font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(198,255,0,0.12);
  border: 1px solid rgba(198,255,0,0.4);
  color: var(--about-lime);
  padding: 4px 10px;
  border-radius: 999px;
  display: inline-block;
}
.page-about .btn-primary{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--about-accent);
  color: #1a2a3a;
  font-family: var(--about-font-data);
  font-weight: 700;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 6px;
  text-decoration: none;
  letter-spacing: 0.04em;
  position: relative;
  overflow: hidden;
  transition: transform 160ms cubic-bezier(0.23,1,0.32,1), box-shadow 160ms cubic-bezier(0.23,1,0.32,1);
}
.page-about .btn-primary:hover{
  transform: translateY(-2px) skewX(-1deg);
  box-shadow: 0 8px 28px rgba(255,107,53,0.3);
}
.page-about .btn-primary .btn-primary__scan{
  width: 4px;
  height: 100%;
  background: var(--about-lime);
  position: absolute;
  left: 0;
  top: 0;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms cubic-bezier(0.19,1,0.22,1);
}
.page-about .btn-primary:hover .btn-primary__scan{
  transform: scaleX(1);
}
.page-about .btn-primary--compact{
  padding: 10px 18px;
  font-size: 14px;
}
.page-about .btn-secondary{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--about-border);
  background: rgba(20,32,43,0.6);
  color: var(--about-text);
  font-family: var(--about-font-data);
  font-size: 14px;
  padding: 11px 20px;
  border-radius: 6px;
  text-decoration: none;
  transition: border-color 160ms ease, background 160ms ease;
}
.page-about .btn-secondary:hover{
  border-color: var(--about-accent);
  background: rgba(255,107,53,0.12);
}
.about-breadcrumb{
  font-family: var(--about-font-data);
  font-size: 13px;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--about-muted);
  margin-bottom: 22px;
}
.about-breadcrumb a{
  color: var(--about-muted);
  text-decoration: none;
  transition: color 160ms ease;
}
.about-breadcrumb a:hover{
  color: var(--about-accent);
}
.about-breadcrumb__sep{
  color: var(--about-border);
  opacity: 0.7;
}
.about-breadcrumb__current{
  color: var(--about-text);
  font-weight: 600;
}
.about-hero{
  position: relative;
  padding: 40px 20px 60px;
}
.about-hero::before{
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 38%;
  height: 12px;
  background: var(--about-accent);
  clip-path: polygon(0 0, 100% 0, 92% 100%, 0 100%);
}
.about-hero__inner{
  max-width: var(--about-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}
.about-hero__eyebrow{
  font-family: var(--about-font-data);
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--about-accent);
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.about-hero__eyebrow::before{
  content: "";
  width: 28px;
  height: 2px;
  background: var(--about-accent);
  display: inline-block;
}
.about-hero h1{
  font-size: clamp(36px, 7vw, 76px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
  text-transform: uppercase;
  line-height: 1.02;
}
.about-hero__lead{
  font-size: 17px;
  line-height: 1.8;
  color: var(--about-muted);
  max-width: 620px;
  margin: 0 0 28px;
}
.about-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}
.about-hero__visual{
  position: relative;
}
.about-hero__img{
  border-radius: var(--about-radius);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
  filter: saturate(1.05) contrast(1.02);
  aspect-ratio: 16 / 10;
  object-fit: cover;
  width: 100%;
}
.about-hero__visual::before{
  content: "";
  position: absolute;
  inset: 14px -14px -14px 14px;
  border: 1px solid rgba(255,107,53,0.4);
  border-radius: var(--about-radius);
  z-index: -1;
}
.about-hero__stamp{
  position: absolute;
  right: 18px;
  bottom: 18px;
  background: var(--about-accent);
  color: #1a2a3a;
  width: 104px;
  height: 104px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 2;
  box-shadow: 0 0 0 4px rgba(255,107,53,0.2), 0 6px 30px rgba(0,0,0,0.35);
  transform: rotate(-8deg);
}
.about-hero__stamp-num{
  font-family: var(--about-font-head);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
}
.about-hero__stamp-label{
  font-family: var(--about-font-data);
  font-size: 11px;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

.about-facts{
  padding: 64px 20px;
  background: var(--about-panel);
  border-top: 1px solid var(--about-border);
  border-bottom: 1px solid var(--about-border);
  position: relative;
  overflow: hidden;
}
.about-facts::before{
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(198,255,0,0.06) 0%, transparent 70%);
}
.about-facts__header{
  max-width: var(--about-max);
  margin: 0 auto 40px;
}
.about-section-kicker{
  font-family: var(--about-font-data);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--about-accent);
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.about-section-kicker::before{
  content: "";
  width: 24px;
  height: 2px;
  background: var(--about-accent);
}
.about-section-title{
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin: 0;
}
.about-facts__intro{
  color: var(--about-muted);
  font-size: 16px;
  line-height: 1.8;
  max-width: 640px;
  margin: 14px 0 0;
}
.about-facts__wall{
  max-width: var(--about-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.about-fact-card{
  background: var(--about-primary);
  border: 1px solid var(--about-border);
  border-radius: var(--about-radius);
  padding: 24px 20px;
  position: relative;
  overflow: hidden;
  transition: border-color 200ms ease, transform 200ms ease;
}
.about-fact-card::after{
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--about-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 260ms cubic-bezier(0.19,1,0.22,1);
}
.about-fact-card:hover{
  border-color: rgba(255,107,53,0.6);
  transform: translateY(-2px);
}
.about-fact-card:hover::after{
  transform: scaleX(1);
}
.about-fact-card--wide{
  grid-column: auto;
}
.about-fact-card--accent{
  background: linear-gradient(135deg, rgba(255,107,53,0.18) 0%, var(--about-primary) 45%);
  border-color: rgba(255,107,53,0.35);
}
.about-fact-card__num{
  font-family: var(--about-font-head);
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1;
  font-weight: 700;
  display: flex;
  align-items: baseline;
  gap: 4px;
  color: var(--about-text);
}
.about-fact-card--accent .about-fact-card__num{
  color: var(--about-accent);
}
.about-fact-card__unit{
  font-family: var(--about-font-data);
  font-size: 16px;
  letter-spacing: 0.05em;
  color: var(--about-muted);
  font-weight: 400;
}
.about-fact-card__label{
  display: block;
  font-size: 15px;
  font-weight: 600;
  margin-top: 10px;
  color: var(--about-text);
}
.about-fact-card__desc{
  display: block;
  font-size: 13px;
  color: var(--about-muted);
  margin-top: 6px;
  line-height: 1.6;
}

.about-timeline{
  padding: 70px 20px 80px;
  position: relative;
}
.about-timeline__inner{
  max-width: var(--about-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
.about-timeline__header{
  max-width: 520px;
}
.about-timeline__intro{
  color: var(--about-muted);
  font-size: 16px;
  line-height: 1.75;
  margin: 14px 0 0;
}
.about-timeline__rail{
  position: relative;
  padding-left: 28px;
}
.about-timeline__rail::before{
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--about-accent) 0%, var(--about-border) 60%, rgba(198,255,0,0.4) 100%);
}
.about-timeline__item{
  position: relative;
  margin-bottom: 28px;
  scroll-margin-top: 100px;
}
.about-timeline__dot{
  position: absolute;
  left: -28px;
  top: 8px;
  width: 14px;
  height: 14px;
  background: var(--about-accent);
  border: 3px solid var(--about-primary);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(255,107,53,0.3);
  z-index: 2;
}
.about-timeline__card{
  background: rgba(20,32,43,0.6);
  border: 1px solid var(--about-border);
  border-left: 3px solid var(--about-accent);
  border-radius: 8px;
  padding: 18px 20px;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}
.about-timeline__card:hover{
  background: var(--about-panel);
  border-color: rgba(255,107,53,0.6);
  transform: translateX(4px);
}
.about-timeline__card h3{
  font-size: 20px;
  margin: 10px 0 6px;
  font-weight: 700;
}
.about-timeline__card p{
  margin: 0;
  font-size: 14px;
  color: var(--about-muted);
  line-height: 1.7;
}
.about-timeline__media{
  max-width: 640px;
}
.about-timeline__media img{
  border-radius: var(--about-radius);
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
  object-fit: cover;
  aspect-ratio: 16 / 10;
}

.about-assurance{
  padding: 68px 20px;
  background:
    linear-gradient(125deg, transparent 60%, rgba(198,255,0,0.04) 60%),
    var(--about-deep, var(--about-panel));
  border-top: 1px solid var(--about-border);
}
.about-assurance__grid{
  max-width: var(--about-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  align-items: center;
}
.about-assurance__text h2{
  margin-top: 0;
}
.about-assurance__text > p{
  color: var(--about-muted);
  font-size: 16px;
  line-height: 1.8;
  margin: 16px 0;
}
.about-assurance__list{
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
}
.about-assurance__list li{
  padding-left: 22px;
  position: relative;
  margin-bottom: 10px;
  font-size: 15px;
  color: var(--about-text);
}
.about-assurance__list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  background: var(--about-lime);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}
.about-assurance__rings{
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  justify-content: center;
}
.about-ring{
  width: 168px;
  height: 168px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  background: radial-gradient(circle at 30% 30%, rgba(20,32,43,0.9), rgba(10,22,33,0.95));
  border: 1px solid var(--about-border);
}
.about-ring::before{
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 3px solid transparent;
}
.about-ring--level3::before{
  border-top-color: var(--about-accent);
  border-right-color: var(--about-accent);
  border-bottom-color: rgba(255,107,53,0.25);
  border-left-color: rgba(255,107,53,0.25);
  transform: rotate(24deg);
}
.about-ring--iso::before{
  border-top-color: var(--about-lime);
  border-left-color: var(--about-lime);
  border-bottom-color: rgba(198,255,0,0.25);
  border-right-color: rgba(198,255,0,0.25);
  transform: rotate(-18deg);
}
.about-ring__score{
  font-family: var(--about-font-head);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
}
.about-ring--iso .about-ring__score{
  font-size: 21px;
}
.about-ring__label{
  font-size: 13px;
  color: var(--about-muted);
  margin-top: 8px;
  text-align: center;
  max-width: 110px;
  line-height: 1.4;
}

.about-team{
  padding: 70px 20px;
}
.about-team__intro{
  max-width: 700px;
  margin-bottom: 40px;
}
.about-team__desc{
  color: var(--about-muted);
  font-size: 16px;
  line-height: 1.8;
  max-width: 620px;
  margin-top: 14px;
}
.about-team__list{
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  max-width: var(--about-max);
  margin: 0 auto;
}
.about-team-card{
  background: var(--about-primary);
  border: 1px solid var(--about-border);
  border-radius: var(--about-radius);
  padding: 26px 22px;
  position: relative;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}
.about-team-card:hover{
  border-color: rgba(198,255,0,0.4);
  box-shadow: 0 0 32px rgba(198,255,0,0.06);
}
.about-team-card__num{
  font-family: var(--about-font-data);
  font-size: 13px;
  color: var(--about-lime);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 12px;
}
.about-team-card h3{
  font-size: 19px;
  margin-bottom: 8px;
}
.about-team-card p{
  margin: 0;
  font-size: 14px;
  color: var(--about-muted);
  line-height: 1.7;
}

.about-ecosystem{
  padding: 70px 20px 80px;
  position: relative;
  background: rgba(14,22,33,0.65);
  border-top: 1px solid var(--about-border);
  overflow: hidden;
}
.about-ecosystem__bg{
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.18;
}
.about-ecosystem__bg img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.about-ecosystem__header{
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin-bottom: 50px;
}
.about-ecosystem__intro{
  color: var(--about-muted);
  font-size: 16px;
  line-height: 1.8;
  margin-top: 14px;
}
.about-ecosystem__nodes{
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: stretch;
  max-width: var(--about-max);
  margin: 0 auto;
}
.about-eco-node{
  background: rgba(20,32,43,0.85);
  border: 1px solid var(--about-border);
  border-radius: var(--about-radius);
  padding: 22px 28px;
  min-width: 200px;
  flex: 1 1 200px;
  position: relative;
  transition: border-color 180ms ease, transform 180ms ease;
}
.about-eco-node:hover{
  border-color: rgba(255,107,53,0.55);
  transform: translateY(-3px);
}
.about-eco-node--main{
  background: linear-gradient(135deg, rgba(255,107,53,0.22), rgba(20,32,43,0.9));
  border-color: rgba(255,107,53,0.45);
  flex-basis: 100%;
  text-align: center;
  padding: 30px 28px;
}
.about-eco-node__title{
  display: block;
  font-family: var(--about-font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
}
.about-eco-node--main .about-eco-node__title{
  font-size: 22px;
}
.about-eco-node__sub{
  display: block;
  font-size: 13px;
  color: var(--about-muted);
  margin-top: 4px;
  font-family: var(--about-font-data);
  letter-spacing: 0.04em;
}
.about-eco-node__dot{
  width: 10px;
  height: 10px;
  background: var(--about-lime);
  border-radius: 50%;
  position: absolute;
  top: 16px;
  right: 16px;
  box-shadow: 0 0 0 3px rgba(198,255,0,0.15);
}
.about-eco-node__desc{
  display: block;
  font-size: 13px;
  color: var(--about-muted);
  margin-top: 8px;
  line-height: 1.6;
}

.about-cta{
  padding: 80px 20px;
  position: relative;
  background: linear-gradient(110deg, var(--about-accent) 0%, #ff8a5c 45%, var(--about-accent) 100%);
}
.about-cta__inner{
  max-width: var(--about-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 28px;
  align-items: flex-start;
  color: #1a2a3a;
}
.about-cta h2{
  font-size: clamp(30px, 5vw, 52px);
  text-transform: uppercase;
  line-height: 1.05;
}
.about-cta p{
  font-size: 16px;
  line-height: 1.75;
  max-width: 520px;
  margin: 12px 0 0;
  color: rgba(26,42,58,0.85);
}
.about-cta__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.about-cta .btn-primary{
  background: #1a2a3a;
  color: var(--about-text);
}
.about-cta .btn-primary:hover{
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.about-cta .btn-primary--compact{
  margin-left: 0;
}

/* 移动优先默认值完成，配平板与桌面两档增强 */
@media (min-width: 640px){
  .about-hero{
    padding: 60px 28px 80px;
  }
  .about-facts__wall{
    grid-template-columns: repeat(2, 1fr);
  }
  .about-fact-card--wide{
    grid-column: span 2;
  }
  .about-team__list{
    grid-template-columns: repeat(2, 1fr);
  }
  .about-timeline__card{
    padding: 20px 26px;
  }
  .about-cta__actions{
    margin-left: auto;
  }
}
@media (min-width: 960px){
  .about-hero__inner{
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 60px;
  }
  .about-hero__visual{
    margin-right: 10px;
  }
  .about-facts{
    padding: 72px 30px;
  }
  .about-facts__wall{
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }
  .about-fact-card--wide{
    grid-column: span 2;
  }
  .about-fact-card:nth-child(3),
  .about-fact-card:nth-child(6){
    grid-column: span 2;
  }
  .about-fact-card:nth-child(4){
    grid-column: span 1;
  }
  .about-fact-card:nth-child(5){
    grid-column: span 1;
  }
  .about-timeline{
    padding: 90px 30px;
  }
  .about-timeline__inner{
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 20px;
    align-items: start;
  }
  .about-timeline__header{
    grid-column: 1;
  }
  .about-timeline__rail{
    grid-column: 1;
  }
  .about-timeline__media{
    grid-column: 2;
    grid-row: 1;
    margin-top: 40px;
  }
  .about-assurance{
    padding: 90px 30px;
  }
  .about-assurance__grid{
    grid-template-columns: 1fr 1fr;
    gap: 60px;
  }
  .about-team{
    padding: 90px 30px;
  }
  .about-team__list{
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }
  .about-ecosystem{
    padding: 90px 30px;
  }
  .about-ecosystem__nodes{
    flex-wrap: nowrap;
  }
  .about-eco-node--main{
    flex-basis: auto;
    flex: 1.2;
  }
  .about-cta{
    padding: 90px 30px;
  }
  .about-cta__inner{
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
  }
  .about-cta__actions{
    flex-shrink: 0;
  }
}
@media (min-width: 1200px){
  .about-hero__inner{
    gap: 80px;
  }
  .about-facts__wall{
    grid-template-columns: repeat(6, 1fr);
  }
  .about-fact-card--wide{
    grid-column: span 2;
  }
  .about-fact-card:nth-child(2){
    grid-column: span 2;
  }
  .about-fact-card:nth-child(3){
    grid-column: span 2;
  }
  .about-fact-card:nth-child(4){
    grid-column: span 2;
  }
  .about-fact-card:nth-child(5){
    grid-column: span 2;
  }
  .about-fact-card:nth-child(6){
    grid-column: span 2;
  }
}
@media (prefers-reduced-motion: reduce){
  .page-about *,
  .page-about *::before,
  .page-about *::after{
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}

.page-about {
  --about-deep: transparent;
}