.page-about{
  --about-card: linear-gradient(150deg, rgba(27,39,53,.92), rgba(11,33,51,.72));
  --about-shadow-soft: 6px 6px 0 rgba(75,63,143,.34);
  background:
    radial-gradient(1100px 560px at 82% -12%, rgba(75,63,143,.38), transparent 62%),
    radial-gradient(760px 420px at 8% 12%, rgba(14,59,70,.55), transparent 68%),
    var(--ink);
  color: var(--body-light);
  font-family: var(--font-body);
  overflow-x: hidden;
}
.page-about *,
.page-about *::before,
.page-about *::after{box-sizing:border-box;}

.page-about .about-crumbs{padding-top:18px;}

/* 通用文字 */
.page-about .about-p{
  margin:0 0 14px;
  font-size:16px;
  line-height:1.78;
  color:var(--mist);
  max-width:70ch;
}
.page-about .about-p:last-child{margin-bottom:0;}

.page-about .about-sec__head{margin-bottom:24px;}
.page-about .about-sec__title{
  margin:8px 0 0;
  font-size:clamp(26px,4.8vw,42px);
  line-height:1.16;
  letter-spacing:-.02em;
  font-weight:900;
  color:var(--paper);
}
.page-about .about-sec__lead{
  margin:12px 0 0;
  font-size:15px;
  line-height:1.78;
  color:var(--mist);
  max-width:62ch;
}

/* 区块节奏 */
.page-about .about-block{
  padding:40px 0;
  scroll-margin-top:88px;
}
.page-about .about-block + .about-block{border-top:1px solid var(--line-soft);}
.page-about .about-block--last{padding-bottom:56px;}

/* 首屏 */
.page-about .about-hero{
  display:grid;
  grid-template-columns:1fr;
  gap:26px;
  padding-top:20px;
  padding-bottom:34px;
}
.page-about .about-hero__title{
  margin:10px 0 16px;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(34px,8.4vw,72px);
  line-height:1.05;
  letter-spacing:-.02em;
  color:var(--paper);
}
.page-about .about-hero__lead{
  margin:0 0 22px;
  font-size:16px;
  line-height:1.82;
  color:var(--mist);
  max-width:56ch;
}
.page-about .about-hero__links{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:26px;
}
.page-about .about-hero__figure{margin:0;}
.page-about .about-hero__figure img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  border:1px solid var(--line);
  border-radius:var(--radius);
  object-fit:cover;
}
.page-about .about-hero__cap{
  display:block;
  margin-top:8px;
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--mist);
}

.page-about .about-hero__side{
  position:relative;
  padding:20px 18px 18px;
  border:1px solid var(--line-cyan);
  border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(27,39,53,.96), rgba(11,33,51,.9));
  box-shadow:var(--about-shadow-soft);
}
.page-about .about-rot{
  display:block;
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--cyan);
}
.page-about .about-hero__sideTitle{
  margin:0 0 12px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--paper);
}
.page-about .about-facts{margin:0;padding:0;}
.page-about .about-facts__row{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:12px;
  padding:9px 0;
  border-bottom:1px dashed var(--line-soft);
}
.page-about .about-facts__row:last-child{border-bottom:0;}
.page-about .about-facts dt{
  flex:0 0 auto;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist);
}
.page-about .about-facts dd{
  margin:0;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--body-light);
  text-align:right;
}
.page-about .about-facts__mail{
  font-size:11px;
  color:var(--amber);
  word-break:break-all;
}
.page-about .about-hero__sideNote{
  margin:14px 0 0;
  padding-top:12px;
  border-top:1px solid var(--line-soft);
  font-size:12px;
  line-height:1.7;
  color:var(--mist);
}

/* 目录 */
.page-about .about-index{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  padding-bottom:8px;
}
.page-about .about-index__link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
  color:var(--body-light);
  font-size:13px;
  text-decoration:none;
  transition:border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.page-about .about-index__no{
  font-size:10px;
  letter-spacing:.14em;
  color:var(--cyan);
}
.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible{
  border-color:var(--line-cyan);
  background:rgba(50,230,208,.09);
  transform:translateY(-2px);
  outline:none;
}
.page-about .about-index__link:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}

/* 起点 */
.page-about .about-origin__body{margin-bottom:26px;}
.page-about .about-points{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
.page-about .about-points__item{
  padding:14px 0 0;
  border-top:1px solid var(--line);
}
.page-about .about-points__no{
  display:inline-block;
  margin-bottom:6px;
  font-size:11px;
  letter-spacing:.24em;
  color:var(--amber);
}
.page-about .about-points__item h3{
  margin:0 0 6px;
  font-size:17px;
  font-weight:700;
  color:var(--paper);
}
.page-about .about-points__item p{
  margin:0;
  font-size:14px;
  line-height:1.72;
  color:var(--mist);
}

/* 时间线 */
.page-about .about-tl__figure{
  margin:0 0 28px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--ink-2);
  overflow:hidden;
}
.page-about .about-tl__figure img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  object-fit:cover;
}
.page-about .about-tl__figure figcaption{
  padding:8px 10px;
  border-top:1px solid var(--line-soft);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--mist);
}

.page-about .about-timeline{
  list-style:none;
  margin:0;
  padding:0;
}
.page-about .about-node{
  position:relative;
  display:grid;
  grid-template-columns:60px minmax(0,1fr);
  gap:14px;
  padding-bottom:14px;
}
.page-about .about-node::before{
  content:"";
  position:absolute;
  left:66px;
  top:10px;
  bottom:-6px;
  width:1px;
  background:linear-gradient(var(--line-cyan), var(--line-soft));
}
.page-about .about-node:last-child::before{display:none;}
.page-about .about-node__scale{
  grid-column:1;
  padding-top:20px;
  text-align:right;
  font-size:11px;
  letter-spacing:.04em;
  color:var(--mist);
}
.page-about .about-node__dot{
  position:absolute;
  left:62px;
  top:24px;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--ink);
  border:1px solid var(--cyan);
  z-index:1;
}
.page-about .about-node--now .about-node__dot{
  background:var(--amber);
  border-color:var(--amber);
  box-shadow:0 0 0 4px rgba(255,184,77,.18);
}
.page-about .about-node__card{
  grid-column:2;
  padding:14px 16px;
  border:1px solid var(--line-soft);
  border-left:2px solid rgba(50,230,208,.35);
  border-radius:var(--radius);
  background:var(--about-card);
  outline:none;
  transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.page-about .about-node--now .about-node__card{
  border-left-color:var(--amber);
  background:linear-gradient(150deg, rgba(27,39,53,.96), rgba(110,39,64,.28));
}
.page-about .about-node__card:hover,
.page-about .about-node__card:focus{
  border-color:var(--line-cyan);
  box-shadow:var(--shadow-lift);
}
.page-about .about-node__card:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}
.page-about .about-node__ver{
  margin:0 0 4px;
  font-size:10px;
  letter-spacing:.22em;
  color:var(--amber);
}
.page-about .about-node__title{
  margin:0 0 6px;
  font-size:18px;
  font-weight:700;
  line-height:1.3;
  color:var(--paper);
}
.page-about .about-node__text{
  margin:0;
  font-size:14px;
  line-height:1.7;
  color:var(--body-light);
}
.page-about .about-node__more{
  margin:10px 0 0;
  padding-top:10px;
  border-top:1px dashed var(--line-soft);
  font-size:13px;
  line-height:1.72;
  color:var(--mist);
  overflow:hidden;
  max-height:240px;
  opacity:1;
  transition:max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), margin var(--dur) var(--ease);
}
.page-about .about-node__hint{display:none;}

/* 团队 */
.page-about .about-team__top{
  display:grid;
  grid-template-columns:1fr;
  gap:22px;
  margin-bottom:26px;
}
.page-about .about-team__figure{
  margin:0;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--indigo);
  overflow:hidden;
}
.page-about .about-team__figure img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  object-fit:cover;
}
.page-about .about-team__figure figcaption{
  padding:8px 10px;
  border-top:1px solid rgba(247,241,228,.22);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--paper);
}
.page-about .about-team__grid{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:1fr;
  gap:12px;
}
.page-about .about-role{
  padding:16px 16px 18px;
  border:1px solid var(--line);
  border-left:3px solid var(--cyan);
  border-radius:var(--radius);
  background:var(--graphite);
  transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .about-role:nth-child(2){border-left-color:var(--amber);}
.page-about .about-role:nth-child(3){border-left-color:var(--indigo);}
.page-about .about-role:nth-child(4){border-left-color:var(--wine);}
.page-about .about-role:hover{transform:translateY(-4px);border-color:var(--line-cyan);}
.page-about .about-role__num{
  margin:0 0 10px;
  font-family:var(--font-condensed);
  font-size:40px;
  font-weight:700;
  line-height:1;
  letter-spacing:-.01em;
  color:var(--paper);
}
.page-about .about-role__unit{
  margin-left:4px;
  font-family:var(--font-body);
  font-size:12px;
  font-weight:500;
  color:var(--mist);
}
.page-about .about-role__title{
  margin:0 0 6px;
  font-size:16px;
  font-weight:700;
  color:var(--paper);
}
.page-about .about-role__text{
  margin:0;
  font-size:13px;
  line-height:1.72;
  color:var(--mist);
}

/* 覆盖与节点 */
.page-about .about-stats{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
  background:var(--line-soft);
  overflow:hidden;
}
.page-about .about-stat{
  padding:16px 14px 18px;
  background:var(--ink-2);
}
.page-about .about-stat__num{
  display:block;
  font-family:var(--font-condensed);
  font-size:34px;
  font-weight:700;
  line-height:1;
  letter-spacing:-.01em;
  color:var(--cyan);
}
.page-about .about-stat__unit{
  font-size:14px;
  margin-left:2px;
  color:var(--cyan-soft);
}
.page-about .about-stat__label{
  display:block;
  margin-top:8px;
  font-size:13px;
  font-weight:500;
  color:var(--body-light);
}
.page-about .about-stat__note{
  display:block;
  margin-top:4px;
  font-size:12px;
  line-height:1.6;
  color:var(--mist);
}

/* 认证印章 */
.page-about .about-seals{
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
}
.page-about .about-seal{
  padding:16px 16px 14px;
  border:1px solid var(--amber);
  border-radius:var(--radius);
  background:rgba(255,184,77,.07);
  outline:none;
  transition:background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.page-about .about-seal:nth-child(2){
  border-color:var(--line-cyan);
  background:rgba(50,230,208,.07);
}
.page-about .about-seal:nth-child(3){
  border-color:var(--line);
  background:rgba(169,190,208,.06);
}
.page-about .about-seal:hover,
.page-about .about-seal:focus{
  box-shadow:var(--shadow-lift);
}
.page-about .about-seal:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}
.page-about .about-seal__label{
  margin:0;
  font-size:10px;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--mist);
}
.page-about .about-seal__value{
  display:block;
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--paper);
  word-break:break-all;
}
.page-about .about-seal__note{
  margin:10px 0 0;
  padding-top:10px;
  border-top:1px dashed var(--line-soft);
  font-size:13px;
  line-height:1.7;
  color:var(--mist);
  transition:color var(--dur) var(--ease);
}
.page-about .about-seal:hover .about-seal__note,
.page-about .about-seal:focus .about-seal__note{color:var(--body-light);}

/* 服务原则 */
.page-about .about-rules{
  list-style:none;
  margin:0;
  padding:0;
  border-top:1px solid var(--line-soft);
}
.page-about .about-rules__item{
  display:grid;
  grid-template-columns:42px minmax(0,1fr);
  gap:12px;
  padding:16px 0;
  border-bottom:1px solid var(--line-soft);
}
.page-about .about-rules__no{
  padding-top:3px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--amber);
}
.page-about .about-rules__item h3{
  margin:0 0 5px;
  font-size:16px;
  font-weight:700;
  color:var(--paper);
}
.page-about .about-rules__item p{
  margin:0;
  font-size:14px;
  line-height:1.72;
  color:var(--mist);
}

/* 结尾 */
.page-about .about-next{
  padding:24px 18px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(150deg, rgba(14,59,70,.9), rgba(11,33,51,.9));
}
.page-about .about-next__title{
  margin:0 0 10px;
  font-size:clamp(22px,3.6vw,30px);
  font-weight:900;
  letter-spacing:-.01em;
  color:var(--paper);
}
.page-about .about-next__text{
  margin:0;
  font-size:15px;
  line-height:1.78;
  color:var(--mist);
  max-width:64ch;
}
.page-about .about-next__links{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:16px;
}
.page-about .about-next__link{
  display:inline-flex;
  align-items:center;
  padding:9px 14px;
  border:1px solid var(--line-cyan);
  border-radius:var(--radius);
  font-size:13px;
  color:var(--cyan-soft);
  text-decoration:none;
  transition:background var(--dur) var(--ease), transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible{
  background:rgba(50,230,208,.13);
  border-color:var(--cyan);
  transform:translateY(-2px);
  outline:none;
}
.page-about .about-next__link:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}

/* 平板与桌面 */
@media (min-width:760px){
  .page-about .about-block{padding:52px 0;}
  .page-about .about-points{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
  .page-about .about-team__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
  .page-about .about-stats{grid-template-columns:repeat(4,minmax(0,1fr));}
  .page-about .about-seals{grid-template-columns:repeat(3,minmax(0,1fr));}
  .page-about .about-next{padding:30px 28px;}
}

@media (min-width:900px){
  .page-about .about-hero{
    grid-template-columns:minmax(0,7fr) minmax(0,4fr);
    gap:38px;
    align-items:start;
    padding-top:26px;
  }
  .page-about .about-hero__side{
    position:sticky;
    top:92px;
    padding:24px 22px 20px;
  }
  .page-about .about-rot{
    position:absolute;
    right:8px;
    top:16px;
    margin:0;
    writing-mode:vertical-rl;
    transform:rotate(180deg);
    letter-spacing:.34em;
  }
  .page-about .about-hero__sideTitle{padding-right:26px;}
  .page-about .about-team__top{
    grid-template-columns:minmax(0,5fr) minmax(0,6fr);
    gap:32px;
    align-items:center;
    margin-bottom:30px;
  }
  .page-about .about-team__grid{grid-template-columns:repeat(4,minmax(0,1fr));}

  .page-about .about-node__card{
    padding:16px 20px 18px;
  }
  .page-about .about-node__card:hover,
  .page-about .about-node__card:focus{
    transform:translateY(-4px);
  }
  .page-about .about-node__more{
    max-height:0;
    opacity:0;
    margin-top:0;
    padding-top:0;
    border-top-color:transparent;
    transition:max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), margin var(--dur) var(--ease), padding var(--dur) var(--ease);
  }
  .page-about .about-node:hover .about-node__more,
  .page-about .about-node:focus-within .about-node__more{
    max-height:200px;
    opacity:1;
    margin-top:10px;
    padding-top:10px;
    border-top-color:var(--line-soft);
  }
  .page-about .about-node__hint{
    display:inline-block;
    margin-top:8px;
    font-size:10px;
    letter-spacing:.18em;
    text-transform:uppercase;
    color:rgba(169,190,208,.7);
  }
  .page-about .about-rules__item{
    grid-template-columns:56px minmax(0,1fr);
    gap:18px;
    padding:18px 0;
  }
}

@media (min-width:1120px){
  .page-about .about-hero__side{top:100px;}
  .page-about .about-origin__body{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:28px;
  }
  .page-about .about-origin__body .about-p{margin-bottom:0;}
}

@media (prefers-reduced-motion: reduce){
  .page-about .about-index__link,
  .page-about .about-node__card,
  .page-about .about-node__more,
  .page-about .about-role,
  .page-about .about-seal,
  .page-about .about-seal__note,
  .page-about .about-next__link{transition:none;}
  .page-about .about-node__card:hover,
  .page-about .about-role:hover,
  .page-about .about-index__link:hover,
  .page-about .about-next__link:hover{transform:none;}
}