.page-about{
  --about-line: rgba(0,240,208,.26);
  --about-edge: clamp(18px, 4vw, 48px);
  background: var(--ink);
  color: var(--ice);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .wrap{
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* 面包屑 */
.page-about .about-crumb{ padding-top: 18px; }
.page-about .breadcrumb{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
}
.page-about .breadcrumb a{
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color .16s ease, border-color .16s ease;
}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible{
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  outline: none;
}
.page-about .breadcrumb [aria-current="page"]{ color: var(--ice); }
.page-about .breadcrumb__sep{ color: var(--line); }

/* 通用排版 */
.page-about .kicker{
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange);
}
.page-about .h2{
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4.6vw, 40px);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--ice);
}
.page-about .h3{
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.6vw, 22px);
  line-height: 1.25;
  color: var(--ice);
}
.page-about .about-copy p{
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ice);
}
.page-about .about-copy p:last-child{ margin-bottom: 0; }
.page-about .mono{ font-family: var(--font-mono); }

/* 首屏 */
.page-about .about-hero{
  position: relative;
  padding: clamp(22px, 5vw, 52px) 0 clamp(26px, 5vw, 56px);
  background:
    radial-gradient(110% 90% at 8% 0%, rgba(0,240,208,.10), transparent 62%),
    radial-gradient(90% 80% at 94% 10%, rgba(255,106,26,.13), transparent 64%);
}
.page-about .about-hero__grid{
  display: grid;
  gap: clamp(24px, 4vw, 42px);
}
.page-about .about-hero__title{
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 8vw, 64px);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--ice);
}
.page-about .about-hero__mark{
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-decoration-thickness: 4px;
  text-underline-offset: 8px;
}
.page-about .about-hero__lead{
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ice);
}
.page-about .about-hero__stats{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--about-line);
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
}
.page-about .about-stat{
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(12px, 2.4vw, 20px);
  background: var(--board);
}
.page-about .about-stat__num{
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 42px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--cyan);
}
.page-about .about-stat:nth-child(2) .about-stat__num{ color: var(--orange); }
.page-about .about-stat:nth-child(3) .about-stat__num{ color: var(--grass); }
.page-about .about-stat:nth-child(4) .about-stat__num{ color: var(--amber); }
.page-about .about-stat__label{
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
}

/* 章节带 */
.page-about .about-band{
  padding: clamp(40px, 7vw, 84px) 0;
  border-top: 2px solid var(--line-soft);
}
.page-about .about-origin{
  background: linear-gradient(180deg, rgba(12,32,56,.9), rgba(7,20,38,.4));
}

.page-about .about-origin__head{
  max-width: 72ch;
  margin-bottom: clamp(24px, 4vw, 40px);
}

/* 观赛路线三步 */
.page-about .about-route{
  list-style: none;
  margin: 0 0 clamp(24px, 4vw, 40px);
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--line-soft);
  border: 2px solid var(--line-soft);
}
.page-about .about-route__item{
  padding: clamp(16px, 3vw, 24px);
  background: var(--panel);
}
.page-about .about-route__tag{
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 8px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--ink);
  background: var(--grass);
}
.page-about .about-route__item p{
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 图片容器 */
.page-about .about-figure{
  margin: 0;
  border: 2px solid var(--line-strong);
  background: var(--board);
  box-shadow: var(--shadow-hard);
}
.page-about .about-figure img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-figure figcaption{
  padding: 12px 16px;
  border-top: 2px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.65;
  letter-spacing: .04em;
  color: var(--muted);
}
.page-about .about-figure--wide img{ aspect-ratio: 16 / 9; }
.page-about .about-figure--tall img{ aspect-ratio: 3 / 2; }
.page-about .about-figure--eco{
  margin-top: clamp(24px, 4vw, 40px);
}
.page-about .about-figure--eco img{ aspect-ratio: 10 / 7; }

/* 时间线 */
.page-about .about-history{ background: var(--board); }
.page-about .about-history__head{
  max-width: 68ch;
  margin-bottom: clamp(20px, 3.5vw, 30px);
}
.page-about .about-history__intro{
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}
.page-about .about-jump{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(24px, 4vw, 40px);
}
.page-about .about-jump a{
  display: inline-block;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
  text-decoration: none;
  background: rgba(18,49,79,.5);
  border: 2px solid var(--line-soft);
  transition: color .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.page-about .about-jump a:hover,
.page-about .about-jump a:focus-visible{
  color: var(--ice);
  border-color: var(--orange);
  box-shadow: var(--glow-orange);
  outline: none;
}

.page-about .about-timeline{
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-timeline::before{
  content: "";
  position: absolute;
  left: 21px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--grass) 55%, var(--orange));
  opacity: .5;
}
.page-about .tl-item{
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 10px;
  padding-bottom: clamp(22px, 4vw, 38px);
}
.page-about .tl-item:last-child{ padding-bottom: 0; }
.page-about .tl-no{
  grid-column: 1;
  grid-row: 1;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  background: var(--cyan);
  transform: skewY(-6deg);
  box-shadow: 4px 4px 0 rgba(3,10,20,.7);
}
.page-about .tl-item:nth-child(2) .tl-no{ background: var(--grass); }
.page-about .tl-item:nth-child(3) .tl-no{ background: var(--ice); }
.page-about .tl-item:nth-child(4) .tl-no{ background: var(--amber); }
.page-about .tl-item:nth-child(5) .tl-no{ background: var(--orange); }
.page-about .tl-card{
  grid-column: 2;
  padding: clamp(16px, 3vw, 26px);
  background: linear-gradient(150deg, var(--panel), rgba(7,20,38,.92));
  border: 2px solid var(--line-soft);
  box-shadow: var(--shadow-hard);
  transition: border-color .18s ease, box-shadow .18s ease;
}
.page-about .tl-card p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}
.page-about .tl-era{
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-about .tl-note{
  grid-column: 2;
  margin: 0;
  padding-left: 12px;
  border-left: 2px dotted var(--line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--muted);
}
.page-about .tl-item:hover .tl-card,
.page-about .tl-item:focus-within .tl-card{
  border-color: var(--cyan);
  box-shadow: var(--shadow-hard), var(--glow-cyan);
}
.page-about .tl-item:hover .tl-note{ color: var(--ice); }

/* 团队 */
.page-about .about-team__grid{
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-bottom: clamp(28px, 4vw, 44px);
}
.page-about .about-review{
  margin-top: clamp(18px, 3vw, 26px);
  padding: clamp(16px, 3vw, 22px);
  border: 2px solid var(--orange);
  border-left-width: 10px;
  background: rgba(255,106,26,.07);
  box-shadow: var(--shadow-soft);
}
.page-about .about-review__label{
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange);
}
.page-about .about-review p:last-child{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ice);
}
.page-about .about-team__roles{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--line-soft);
  border: 2px solid var(--line-soft);
}
.page-about .about-role{
  padding: clamp(16px, 3vw, 26px);
  background: var(--board);
}
.page-about .about-role__tag{
  display: inline-block;
  margin-bottom: 10px;
  padding: 1px 7px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
  border: 2px solid var(--about-line);
}
.page-about .about-role p{
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* 合作生态 */
.page-about .about-eco{
  background: linear-gradient(160deg, rgba(26,15,46,.85), rgba(7,20,38,.6));
}
.page-about .about-eco__grid{
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}
.page-about .about-award{
  margin: clamp(16px, 3vw, 24px) 0 0;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ice);
  background: rgba(95,208,104,.1);
  border-left: 6px solid var(--grass);
}
.page-about .about-award .mono{
  color: var(--grass);
  letter-spacing: .08em;
}
.page-about .about-eco__visual{
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(14px, 3vw, 22px);
  background: rgba(18,49,79,.55);
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
}
.page-about .eco-map{
  display: block;
  width: 100%;
  height: auto;
}
.page-about .eco-map text{
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .02em;
  fill: var(--ice);
}
.page-about .eco-map__num{
  fill: var(--muted);
  font-size: 9.5px;
}
.page-about .eco-map__hub-text{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  fill: var(--ice);
}
.page-about .eco-map__hub-text--sm{
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .12em;
  fill: var(--muted);
}
.page-about .eco-node circle{ transition: stroke .16s ease, stroke-width .16s ease; }
.page-about .eco-node:hover circle{
  stroke: var(--orange);
  stroke-width: 3;
}
.page-about .eco-legend{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-about .eco-legend__item{
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}
.page-about .eco-legend__dot{
  flex: none;
  width: 9px;
  height: 9px;
  transform: skewY(-8deg);
}
.page-about .eco-legend__dot--cyan{ background: var(--cyan); }
.page-about .eco-legend__dot--grass{ background: var(--grass); }
.page-about .eco-legend__dot--amber{ background: var(--amber); }
.page-about .eco-legend__dot--orange{ background: var(--orange); }

/* 服务范围与联系 */
.page-about .about-quote{
  margin: 0 0 clamp(28px, 5vw, 52px);
  padding: clamp(20px, 4vw, 34px);
  border-left: 8px solid var(--orange);
  background: linear-gradient(120deg, rgba(0,240,208,.09), rgba(255,106,26,.12) 58%, transparent);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 3.4vw, 30px);
  line-height: 1.42;
  color: var(--ice);
}
.page-about .about-touch__grid{
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}
.page-about .about-links{
  margin-top: clamp(16px, 3vw, 24px);
  display: grid;
  gap: 2px;
  list-style: none;
  padding: 0;
  background: var(--line-soft);
  border: 2px solid var(--line-soft);
}
.page-about .about-links .link-list__link{
  display: block;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--ice);
  text-decoration: none;
  background: var(--board);
  transition: color .16s ease, background .16s ease;
}
.page-about .about-links .link-list__link:hover,
.page-about .about-links .link-list__link:focus-visible{
  color: var(--ink);
  background: var(--cyan);
  outline: none;
}
.page-about .about-contact{
  padding: clamp(18px, 3.4vw, 28px);
  background: var(--panel);
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
}
.page-about .about-contact__label{
  margin: 0 0 16px;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--amber);
}
.page-about .about-contact .contact-item{
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 10px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line-soft);
}
.page-about .about-contact .contact-item__label{
  grid-column: 1 / -1;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.page-about .about-contact .contact-item__value{
  min-width: 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ice);
  overflow-wrap: anywhere;
}
.page-about .about-contact .contact-item__value--mono{ font-family: var(--font-mono); }
.page-about .about-contact .copy-btn{
  align-self: center;
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--cyan);
  background: transparent;
  border: 2px solid var(--about-line);
  cursor: pointer;
  transition: color .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.page-about .about-contact .copy-btn:hover,
.page-about .about-contact .copy-btn:focus-visible{
  color: var(--ice);
  border-color: var(--orange);
  box-shadow: var(--glow-orange);
  outline: none;
}
.page-about .about-contact .copy-feedback{
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--grass);
}
.page-about .about-contact__note{
  margin: 16px 0 18px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}
.page-about .about-contact .btn--block{
  display: block;
  width: 100%;
  text-align: center;
  padding: 13px 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--ink);
  background: var(--orange);
  border: 2px solid var(--orange);
  text-decoration: none;
  box-shadow: 6px 6px 0 rgba(3,10,20,.7);
  transition: background .16s ease, color .16s ease, box-shadow .16s ease;
}
.page-about .about-contact .btn--block:hover,
.page-about .about-contact .btn--block:focus-visible{
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  box-shadow: var(--glow-cyan);
  outline: none;
}

/* 平板与桌面 */
@media (min-width: 700px){
  .page-about .about-route{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-about .about-team__roles{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-about .eco-legend{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 880px){
  .page-about .about-hero__grid{
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }
  .page-about .about-team__grid{
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
  .page-about .about-eco__grid{
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }
  .page-about .about-touch__grid{
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    align-items: start;
  }
  .page-about .about-timeline::before{ left: 30px; }
  .page-about .tl-item{
    grid-template-columns: 64px minmax(0, 1fr) minmax(0, 230px);
    column-gap: clamp(16px, 2.4vw, 28px);
  }
  .page-about .tl-no{
    width: 46px;
    height: 46px;
    font-size: 14px;
  }
  .page-about .tl-card{ grid-column: 2; }
  .page-about .tl-note{
    grid-column: 3;
    align-self: start;
    margin-top: 6px;
  }
  .page-about .about-figure--eco{ margin-top: clamp(28px, 4vw, 44px); }
}

@media (prefers-reduced-motion: reduce){
  .page-about *{ transition: none !important; }
}