/* ============ 品牌文化页 ============ */
.page-about{
  --about-note-bg: #23304A;
  --about-note-line: rgba(198, 204, 214, .26);
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

/* ---- 首屏 ---- */
.page-about .about-hero{
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper-white);
  padding: 46px 0 38px;
}
.page-about .about-hero::before{
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(198, 204, 214, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(198, 204, 214, .07) 1px, transparent 1px);
  background-size: 46px 46px;
}
.page-about .about-hero::after{
  content: "";
  position: absolute;
  right: -10%;
  bottom: -34%;
  width: 64%;
  height: 250px;
  z-index: -1;
  transform: skewY(-8deg);
  background: linear-gradient(90deg, rgba(46, 107, 255, 0), rgba(46, 107, 255, .5));
}
.page-about .about-hero-inner{ position: relative; }

.page-about .about-kicker{
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber);
}
.page-about .about-title{
  margin: 0 0 20px;
  max-width: 20ch;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.12;
  letter-spacing: -.02em;
  font-weight: 800;
  color: #FFFFFF;
}
@supports ((background-clip: text) or (-webkit-background-clip: text)){
  .page-about .about-title{
    background: linear-gradient(102deg, #FFFFFF 0%, #B6FF3C 52%, #2E6BFF 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
  }
}
.page-about .about-lede{
  margin: 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.95;
  color: #CDD4E2;
}

.page-about .about-stats{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 14px;
  margin: 34px 0 0;
  padding: 22px 0 0;
  border-top: 3px solid rgba(198, 204, 214, .3);
}
.page-about .about-stat dt{
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--silver);
}
.page-about .about-stat dd{
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: #E8ECF4;
}
.page-about .stat-num{
  margin-right: 4px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--lime);
}

/* ---- 面包屑 ---- */
.page-about .about-crumbs{
  padding-top: 16px;
  padding-bottom: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}
.page-about .about-crumbs a{
  color: var(--deep-blue);
  text-decoration: none;
}
.page-about .about-crumbs a:hover{ text-decoration: underline; }

/* ---- 正文与旁注双栏 ---- */
.page-about .about-body{
  display: grid;
  gap: var(--step-2);
  padding-top: var(--step-2);
  padding-bottom: var(--step-3);
}
.page-about .about-article{ min-width: 0; }

.page-about .about-sec{
  position: relative;
  scroll-margin-top: 118px;
}
.page-about .about-sec::after{
  content: "";
  display: block;
  clear: both;
}
.page-about .about-sec + .about-sec{
  margin-top: 54px;
  padding-top: 40px;
  border-top: 3px solid var(--silver);
}

.page-about .about-sec-head{
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 20px;
}
.page-about .about-sec-index{
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: clamp(22px, 4.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--silver);
}
.page-about .about-h{ margin: 0; }
.page-about .about-h::after{
  content: "";
  display: block;
  width: 48px;
  height: 4px;
  margin-top: 12px;
  background: var(--lime);
}

.page-about .about-p{
  margin: 0 0 18px;
  font-size: 16.5px;
  line-height: 1.95;
  color: var(--ink-soft);
}
.page-about .about-pull{
  margin: 26px 0;
  padding: 6px 0 6px 20px;
  border-left: 6px solid var(--blue);
  font-size: 19px;
  line-height: 1.75;
  font-weight: 600;
  color: var(--ink);
}

/* ---- 图片 ---- */
.page-about .about-fig{ margin: 26px 0; }
.page-about .about-fig img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  box-sizing: border-box;
  object-fit: cover;
  background: var(--silver);
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 rgba(20, 24, 33, .85);
}
.page-about .about-fig figcaption{
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---- 波形版本时间轴 ---- */
.page-about .about-timeline{ margin: 30px 0 8px; }
.page-about .tl-scroll{
  overflow-x: auto;
  padding-bottom: 18px;
  -webkit-overflow-scrolling: touch;
}
.page-about .tl-inner{
  position: relative;
  width: max-content;
  min-width: 100%;
  padding-top: 96px;
}
.page-about .tl-wave{
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 96px;
}
.page-about .tl-track{
  display: flex;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .tl-node{
  position: relative;
  flex: 0 0 226px;
  box-sizing: border-box;
  padding: 16px 16px 18px;
  background: var(--paper-white);
  border: 3px solid var(--ink);
  transition: transform .25s ease, box-shadow .25s ease;
}
.page-about .tl-node::before{
  content: "";
  position: absolute;
  left: 22px;
  top: -25px;
  width: 3px;
  height: 25px;
  background: var(--slate);
}
.page-about .tl-node::after{
  content: "";
  position: absolute;
  left: 16px;
  top: -40px;
  width: 15px;
  height: 15px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--lime);
  border: 3px solid var(--ink);
  box-shadow: 0 0 0 5px rgba(182, 255, 60, .22);
}
.page-about .tl-node:hover,
.page-about .tl-node:focus-within{
  transform: translate(-2px, -4px);
  box-shadow: 8px 8px 0 rgba(20, 24, 33, .85);
}
.page-about .tl-ver{
  display: block;
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--deep-blue);
}
.page-about .tl-title{
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
}
.page-about .tl-text{
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}
.page-about .tl-stage{
  display: inline-block;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink);
  background: var(--amber);
  border: 2px solid var(--ink);
}

/* ---- 团队卡片 ---- */
.page-about .about-team{
  display: grid;
  gap: 18px;
  margin: 26px 0;
}
.page-about .team-card{
  padding: 20px 18px 22px;
  background: var(--paper-white);
  border: 3px solid var(--ink);
  border-top-width: 8px;
  box-shadow: 6px 6px 0 rgba(20, 24, 33, .16);
}
.page-about .team-card--data{ border-top-color: var(--blue); }
.page-about .team-card--content{ border-top-color: var(--amber); }
.page-about .team-card--support{ border-top-color: var(--alert); }
.page-about .team-role{
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
}
.page-about .team-card h3{
  margin: 0 0 10px;
  font-size: 17px;
  color: var(--ink);
}
.page-about .team-card p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---- 覆盖范围数据条 ---- */
.page-about .about-facts{
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .about-facts li{
  padding: 16px;
  background: var(--ink);
  border: 3px solid var(--ink);
  color: var(--paper-white);
}
.page-about .fact-key{
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--silver);
}
.page-about .fact-val{
  display: block;
  font-size: 14.5px;
  line-height: 1.7;
}
.page-about .fact-val .mono{
  font-size: 18px;
  color: var(--lime);
}

/* ---- 合作与荣誉 ---- */
.page-about .about-honor{
  display: grid;
  gap: 20px;
  margin: 28px 0;
}
.page-about .honor-card{
  padding: 22px 20px;
  background: var(--paper-white);
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 rgba(20, 24, 33, .9);
}
.page-about .honor-tag{
  display: inline-block;
  margin-bottom: 12px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  border: 2px solid var(--ink);
}
.page-about .honor-card--a .honor-tag{ background: var(--blue); color: #FFFFFF; }
.page-about .honor-card--b .honor-tag{ background: var(--amber); color: var(--ink); }
.page-about .honor-card--c .honor-tag{ background: var(--lime); color: var(--ink); }
.page-about .honor-card--d .honor-tag{ background: var(--alert); color: #FFFFFF; }
.page-about .honor-card h3{
  margin: 0 0 10px;
  font-size: 17px;
  color: var(--ink);
}
.page-about .honor-card p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---- 收尾 ---- */
.page-about .about-cta{
  position: relative;
  margin-top: 60px;
  padding: 32px 22px 26px;
  background: var(--ink);
  border: 3px solid var(--ink);
  color: var(--paper-white);
}
.page-about .about-cta::before{
  content: "";
  position: absolute;
  left: -3px;
  top: -3px;
  width: 96px;
  height: 6px;
  background: var(--lime);
}
.page-about .about-cta-title{
  margin: 0 0 12px;
  font-size: clamp(20px, 3.6vw, 28px);
  line-height: 1.35;
  color: #FFFFFF;
}
.page-about .about-cta-text{
  margin: 0 0 22px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.9;
  color: #C9D0DE;
}
.page-about .about-cta-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-cta-note{
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--silver);
}
.page-about .about-cta-note a{
  color: var(--lime);
  text-decoration: underline;
}

/* ---- 右侧旁注栏 ---- */
.page-about .about-notes{
  display: grid;
  gap: 18px;
}
.page-about .about-note{
  padding: 18px 16px;
  background: var(--about-note-bg);
  border: 3px solid var(--ink);
  color: #E4E9F2;
}
.page-about .about-note-title{
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--lime);
}

.page-about .about-toc ol{
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-toc a{
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 7px 10px;
  border-left: 3px solid transparent;
  font-size: 14px;
  color: #D5DBE7;
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.page-about .about-toc a .mono{
  font-size: 11px;
  color: var(--silver);
}
.page-about .about-toc a:hover{
  color: var(--lime);
  border-left-color: var(--lime);
}
.page-about .about-toc a[aria-current="page"]{
  color: var(--lime);
  border-left-color: var(--lime);
  background: rgba(182, 255, 60, .08);
}

.page-about .note-list{
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .note-list li{
  padding-bottom: 9px;
  border-bottom: 1px dashed var(--about-note-line);
  font-size: 13px;
  line-height: 1.6;
  color: #C9D1E0;
}
.page-about .note-list li:last-child{
  padding-bottom: 0;
  border-bottom: 0;
}
.page-about .note-list .mono{
  margin-right: 6px;
  font-size: 14px;
  color: var(--lime);
}

.page-about .note-terms{ margin: 0; }
.page-about .note-terms dt{ margin-bottom: 4px; }
.page-about .note-terms a{
  font-size: 13.5px;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 2px solid rgba(182, 255, 60, .42);
}
.page-about .note-terms a:hover{ border-bottom-color: var(--lime); }
.page-about .note-terms dd{
  margin: 0 0 14px;
  font-size: 12.5px;
  line-height: 1.75;
  color: #B9C2D2;
}
.page-about .note-terms dd:last-child{ margin-bottom: 0; }

/* ---- 响应式 ---- */
@media (min-width: 640px){
  .page-about .about-facts{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-about .about-hero{ padding: 56px 0 46px; }
}

@media (min-width: 720px){
  .page-about .about-stats{ grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-about .about-p{ font-size: 17px; }
  .page-about .about-honor{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 760px){
  .page-about .about-team{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 900px){
  .page-about .about-fig--float{
    float: right;
    width: 50%;
    margin: 8px 0 20px 30px;
  }
  .page-about .about-fig--float img{ box-shadow: 6px 6px 0 rgba(20, 24, 33, .85); }
  .page-about .about-fig--float figcaption{ font-size: 11.5px; }
  .page-about .about-fig--center{
    width: 80%;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (min-width: 1000px){
  .page-about .about-body{
    grid-template-columns: minmax(0, 1fr) 290px;
    gap: 56px;
    padding-top: 56px;
    align-items: start;
  }
  .page-about .about-notes{
    position: sticky;
    top: 92px;
  }
  .page-about .about-sec-head{ gap: 20px; }
}

@media (prefers-reduced-motion: reduce){
  .page-about .tl-node{ transition: none; }
  .page-about .tl-node:hover,
  .page-about .tl-node:focus-within{ transform: none; }
  .page-about .about-toc a{ transition: none; }
}
</main>