.page-about{
  padding-top:clamp(74px,9vw,116px);
  padding-bottom:clamp(56px,8vw,104px);
}

.page-about .about-top{
  margin-bottom:clamp(16px,2.4vw,26px);
}

.page-about .breadcrumb{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
}
.page-about .breadcrumb a{
  color:var(--silver);
  text-decoration:none;
  transition:color .22s var(--ease);
}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible{
  color:var(--pulse);
}
.page-about .crumb-sep{
  color:rgba(201,212,230,.34);
}
.page-about .crumb-here{
  color:var(--amber);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  display:grid;
  gap:clamp(26px,4vw,46px);
  align-items:center;
}
.page-about .about-hero__title{
  margin:14px 0 18px;
  font-family:var(--font-head);
  font-weight:800;
  font-size:clamp(30px,5.4vw,56px);
  line-height:1.06;
  letter-spacing:-.025em;
  color:#F7FAFF;
}
.page-about .about-hero__lede{
  margin:0 0 24px;
  max-width:62ch;
  color:var(--silver);
  font-size:clamp(14.5px,1.5vw,17px);
  line-height:1.9;
}
.page-about .about-hero__facts{
  display:flex;
  flex-wrap:wrap;
  gap:12px 26px;
  margin:0;
  padding:0;
  list-style:none;
}
.page-about .about-hero__facts li{
  display:flex;
  align-items:baseline;
  gap:8px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--muted);
}
.page-about .about-hero__facts .mono{
  font-family:var(--font-mono);
  font-size:22px;
  font-weight:700;
  line-height:1;
  color:var(--pulse);
  letter-spacing:-.01em;
}
.page-about .about-hero__figure{
  position:relative;
  margin:0;
  border:1px solid var(--line-strong);
  border-radius:var(--r-xl);
  overflow:hidden;
  background:var(--cabin);
  box-shadow:var(--shadow-card);
}
.page-about .about-hero__figure::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(120% 90% at 78% 6%, rgba(41,224,200,.18), transparent 58%);
  pointer-events:none;
}
.page-about .about-hero__figure img{
  display:block;
  width:100%;
  height:auto;
  aspect-ratio:3 / 2;
  object-fit:cover;
}

/* ---------- 双栏骨架 ---------- */
.page-about .about-body{
  display:grid;
  gap:clamp(26px,3.6vw,46px);
  margin-top:clamp(44px,6.5vw,88px);
}
.page-about .about-aside{
  display:grid;
  gap:16px;
  align-content:start;
}

.page-about .about-toc{
  padding:16px 14px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(180deg, rgba(14,23,48,.94), rgba(7,11,24,.9));
}
.page-about .about-toc__title{
  margin:0 0 12px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--muted);
}
.page-about .about-toc ol{
  display:grid;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
}
.page-about .about-toc a{
  display:flex;
  gap:9px;
  align-items:baseline;
  padding:9px 10px;
  border-left:2px solid transparent;
  border-radius:var(--r-sm);
  color:var(--silver);
  font-size:13.5px;
  line-height:1.5;
  text-decoration:none;
  transition:background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.page-about .about-toc a:hover,
.page-about .about-toc a:focus-visible{
  background:rgba(41,224,200,.09);
  border-left-color:var(--pulse);
  color:#fff;
  outline:none;
}
.page-about .toc-num{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  color:var(--amber);
}

.page-about .about-aside__card{
  padding:18px 16px;
}
.page-about .about-aside__kicker{
  margin:0 0 8px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  opacity:.62;
}
.page-about .about-aside__card p{
  margin:0 0 14px;
  font-size:13.5px;
  line-height:1.75;
}
.page-about .about-aside__links{
  display:grid;
  gap:8px;
}
.page-about .about-aside__links a{
  display:block;
  padding:9px 11px;
  border:1px solid rgba(42,26,18,.22);
  border-radius:var(--r-sm);
  color:var(--inkbrown);
  font-size:13px;
  text-decoration:none;
  transition:background .22s var(--ease), border-color .22s var(--ease);
}
.page-about .about-aside__links a:hover,
.page-about .about-aside__links a:focus-visible{
  background:rgba(42,26,18,.07);
  border-color:rgba(42,26,18,.42);
  outline:none;
}

/* ---------- 内容区 ---------- */
.page-about .about-content{
  display:grid;
  gap:clamp(36px,5vw,66px);
  min-width:0;
}
.page-about .about-section{
  scroll-margin-top:112px;
}
.page-about .about-sec-head{
  display:grid;
  gap:8px;
  margin-bottom:18px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.page-about .about-section h2{
  margin:0;
  font-family:var(--font-head);
  font-weight:800;
  font-size:clamp(22px,3vw,33px);
  line-height:1.14;
  letter-spacing:-.018em;
  color:#F7FAFF;
}
.page-about .about-section > p{
  max-width:70ch;
  margin:0 0 18px;
  color:var(--silver);
  font-size:15.5px;
  line-height:1.9;
}
.page-about .about-section a:not(.btn){
  color:var(--pulse);
  text-decoration:none;
  border-bottom:1px solid rgba(41,224,200,.34);
  transition:color .22s var(--ease), border-color .22s var(--ease);
}
.page-about .about-section a:not(.btn):hover{
  color:#fff;
  border-bottom-color:#fff;
}

/* 通用卡片与栅格 */
.page-about .about-grid{
  display:grid;
  gap:13px;
}
.page-about .about-card{
  position:relative;
  padding:clamp(16px,2.2vw,22px);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(150deg, rgba(21,35,74,.72), rgba(14,23,48,.9));
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.page-about .about-card::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:2px;
  height:100%;
  background:linear-gradient(180deg, var(--pulse), rgba(41,224,200,0));
  opacity:.62;
}
.page-about .about-card h3{
  margin:0 0 8px;
  font-family:var(--font-head);
  font-size:16px;
  line-height:1.4;
  color:#F7FAFF;
}
.page-about .about-card p{
  margin:0;
  color:var(--silver);
  font-size:14px;
  line-height:1.8;
}
.page-about .about-card__n{
  display:block;
  margin-bottom:12px;
  font-family:var(--font-mono);
  font-size:clamp(26px,3.4vw,34px);
  font-weight:700;
  line-height:1;
  color:var(--amber);
}

/* 图片容器 */
.page-about .about-figure{
  margin:0 0 clamp(20px,3vw,28px);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--cabin);
}
.page-about .about-figure img{
  display:block;
  width:100%;
  height:auto;
  object-fit:cover;
}
.page-about .about-figure figcaption{
  padding:10px 14px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--muted);
}

/* 时间轴 */
.page-about .about-timeline{
  display:grid;
  gap:14px;
  margin:0;
  padding:0;
  list-style:none;
}
.page-about .tl-item{
  position:relative;
  padding:18px 18px 18px 46px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(135deg, rgba(14,23,48,.95), rgba(7,11,24,.72));
}
.page-about .tl-item::before{
  content:"";
  position:absolute;
  left:18px;
  top:26px;
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--pulse);
  box-shadow:0 0 0 4px rgba(41,224,200,.14), 0 0 16px rgba(41,224,200,.58);
}
.page-about .tl-item::after{
  content:"";
  position:absolute;
  left:22px;
  top:38px;
  bottom:-15px;
  width:1px;
  background:linear-gradient(180deg, rgba(41,224,200,.5), rgba(41,224,200,0));
}
.page-about .tl-item:last-child::after{
  display:none;
}
.page-about .tl-ver{
  display:block;
  margin-bottom:7px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.16em;
  color:var(--amber);
}
.page-about .tl-item h3{
  margin:0 0 8px;
  font-family:var(--font-head);
  font-size:17px;
  line-height:1.35;
  color:#F7FAFF;
}
.page-about .tl-item p{
  margin:0;
  color:var(--silver);
  font-size:14.5px;
  line-height:1.82;
}

/* 团队 */
.page-about .about-team{
  display:grid;
  gap:16px;
}
.page-about .about-team__grid{
  display:grid;
  gap:12px;
  grid-template-columns:repeat(auto-fit, minmax(178px, 1fr));
}
.page-about .team-card{
  padding:15px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:rgba(14,23,48,.74);
}
.page-about .team-card__n{
  display:block;
  margin-bottom:10px;
  font-family:var(--font-mono);
  font-size:24px;
  font-weight:700;
  line-height:1;
  color:var(--pulse);
}
.page-about .team-card h3{
  margin:0 0 6px;
  font-family:var(--font-head);
  font-size:14.5px;
  line-height:1.4;
  color:#F7FAFF;
}
.page-about .team-card p{
  margin:0;
  color:var(--muted);
  font-size:13.5px;
  line-height:1.75;
}
.page-about .about-figure--compact{
  margin:0;
}

/* 标签体系 */
.page-about .tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:0 0 20px;
}
.page-about .about-more{
  margin-top:18px;
  font-size:13.5px;
}
.page-about .about-detail{
  margin-top:14px;
  padding:16px 18px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:rgba(14,23,48,.62);
}
.page-about .about-detail[hidden]{
  display:none;
}
.page-about .about-detail dl{
  display:grid;
  gap:14px;
  margin:0;
}
.page-about .about-detail dt{
  margin-bottom:4px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--amber);
}
.page-about .about-detail dd{
  margin:0;
  color:var(--silver);
  font-size:13.5px;
  line-height:1.75;
}

/* 荣誉卡片 */
.page-about .about-honor{
  margin-top:14px;
  padding:clamp(18px,2.4vw,24px);
}
.page-about .about-honor__kicker{
  margin:0 0 8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  opacity:.66;
}
.page-about .about-honor p{
  margin:0;
  font-size:14.5px;
  line-height:1.8;
}

/* 节奏 */
.page-about .about-rhythm{
  display:grid;
  gap:12px;
  margin:20px 0 22px;
}
.page-about .rhythm-item{
  display:grid;
  gap:6px;
  align-content:start;
  padding:16px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:rgba(14,23,48,.72);
}
.page-about .rhythm-item__period{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--amber);
}
.page-about .rhythm-item__n{
  font-family:var(--font-mono);
  font-size:clamp(24px,3vw,30px);
  font-weight:700;
  line-height:1;
  color:var(--pulse);
}
.page-about .rhythm-item p{
  margin:0;
  color:var(--muted);
  font-size:13.5px;
  line-height:1.75;
}

.page-about .about-cta{
  display:grid;
  gap:14px;
  justify-items:start;
  margin-top:22px;
  padding:clamp(18px,2.4vw,24px);
  border:1px solid rgba(41,224,200,.28);
  border-radius:var(--r-lg);
  background:linear-gradient(135deg, rgba(41,224,200,.09), rgba(14,23,48,.5));
}
.page-about .about-cta p{
  margin:0;
  color:var(--silver);
  font-size:14.5px;
  line-height:1.82;
}

/* ---------- 响应式 ---------- */
@media (min-width:620px){
  .page-about .about-grid--2{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }
}
@media (min-width:760px){
  .page-about .about-grid--3{
    grid-template-columns:repeat(3, minmax(0,1fr));
  }
  .page-about .about-rhythm{
    grid-template-columns:repeat(3, minmax(0,1fr));
  }
  .page-about .about-detail dl{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }
}
@media (min-width:900px){
  .page-about .about-hero{
    grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);
  }
  .page-about .about-team{
    grid-template-columns:minmax(0,1.36fr) minmax(0,.64fr);
    align-items:start;
  }
}
@media (min-width:980px){
  .page-about .about-body{
    grid-template-columns:236px minmax(0,1fr);
    align-items:start;
  }
  .page-about .about-aside{
    position:sticky;
    top:104px;
  }
}
@media (max-width:640px){
  .page-about .about-hero__facts{
    gap:10px 18px;
  }
  .page-about .tl-item{
    padding:16px 15px 16px 40px;
  }
  .page-about .tl-item::before{
    left:15px;
  }
  .page-about .tl-item::after{
    left:19px;
  }
}
@media (prefers-reduced-motion:reduce){
  .page-about .about-toc a,
  .page-about .about-aside__links a,
  .page-about .about-section a:not(.btn){
    transition:none;
  }
}
<<<END>>>