.page-about{
  --about-line: rgba(138,151,163,.26);
  --about-line-soft: rgba(138,151,163,.14);
  --about-rail: 208px;
  color: var(--im-text);
  background: var(--im-ink);
  padding-bottom: clamp(56px,8vw,120px);
}

.page-about .about-shell{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: clamp(24px,4vw,56px);
  padding-top: clamp(20px,3vw,40px);
}

.page-about .about-flow{
  min-width: 0;
}

/* ---------- 左侧索引 ---------- */
.page-about .about-index{
  border-top: 1px solid var(--about-line);
  padding-top: 12px;
}
.page-about .about-index__title{
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--im-cool);
}
.page-about .about-index ol{
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  max-width: 100%;
}
.page-about .about-index li{ flex: 0 0 auto; }
.page-about .about-index a{
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 6px 10px;
  border: 1px solid var(--about-line-soft);
  color: var(--im-text-dim);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}
.page-about .about-index a .im-mono{ font-size: 11px; color: var(--im-cool); }
.page-about .about-index a:hover,
.page-about .about-index a:focus-visible{
  color: var(--im-mint);
  border-color: var(--im-mint);
  background: rgba(53,240,180,.07);
  outline: none;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  padding: clamp(18px,3vw,30px) 0 clamp(26px,4vw,44px);
  border-bottom: 1px solid var(--about-line);
}
.page-about .about-hero h1{
  margin: 14px 0 0;
  font-family: var(--im-font-display);
  font-size: clamp(30px,5.2vw,54px);
  line-height: 1.12;
  letter-spacing: -.02em;
  font-weight: 700;
  color: var(--im-white);
  max-width: 20ch;
}
.page-about .about-lede{
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: clamp(15px,1.6vw,17px);
  line-height: 1.85;
  color: var(--im-text);
}
.page-about .about-facts{
  list-style: none;
  margin: clamp(24px,3vw,36px) 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}
.page-about .about-facts li{
  background: var(--im-night);
  padding: 14px 16px 16px;
  display: grid;
  gap: 6px;
  align-content: start;
}
.page-about .about-facts__num{
  font-size: clamp(19px,2.4vw,24px);
  line-height: 1;
  color: var(--im-mint);
  letter-spacing: .02em;
}
.page-about .about-facts__cap{
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--im-text-dim);
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec{
  padding: clamp(34px,5vw,62px) 0;
  border-bottom: 1px solid var(--about-line-soft);
}
.page-about .about-sec:last-child{ border-bottom: none; }
.page-about .about-sec__head{
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px,3vw,32px);
  max-width: 66ch;
}
.page-about .about-sec__head h2{
  margin: 0;
  font-family: var(--im-font-display);
  font-size: clamp(23px,3.4vw,34px);
  line-height: 1.2;
  letter-spacing: -.01em;
  font-weight: 700;
  color: var(--im-white);
}
.page-about .about-prose p{
  margin: 0 0 15px;
  line-height: 1.85;
  font-size: 15.5px;
  max-width: 64ch;
  color: var(--im-text);
}
.page-about .about-prose p:last-child{ margin-bottom: 0; }

/* ---------- 起点 ---------- */
.page-about .about-origin-grid{
  display: grid;
  gap: clamp(22px,3vw,34px);
  grid-template-columns: minmax(0,1fr);
}
.page-about .about-paper{
  position: relative;
  background: var(--im-paper);
  color: #10161B;
  padding: 22px 22px 26px;
  border-top: 3px solid var(--im-mint);
  box-shadow: 7px 7px 0 rgba(53,240,180,.12);
}
.page-about .about-paper::after{
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 24px;
  height: 24px;
  background: var(--im-ink);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
}
.page-about .about-paper__label{
  margin: 0;
  font-size: 11px;
  letter-spacing: .2em;
  color: #5C6772;
}
.page-about .about-paper__big{
  margin: 8px 0 4px;
  font-size: clamp(34px,5vw,46px);
  line-height: 1;
  font-weight: 700;
  color: #0B0F13;
}
.page-about .about-paper__note{
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.75;
  color: #3C4650;
}
.page-about .about-paper__list{
  list-style: none;
  margin: 0;
  padding: 12px 0 0;
  border-top: 1px solid rgba(16,22,27,.16);
  display: grid;
  gap: 8px;
}
.page-about .about-paper__list li{
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.65;
  color: #232B33;
}
.page-about .about-paper__list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--im-orange);
}

/* ---------- 团队 ---------- */
.page-about .about-team{
  display: grid;
  gap: clamp(24px,3vw,36px);
  grid-template-columns: minmax(0,1fr);
}
.page-about .about-team__tabs .im-tabs__bar{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-about .about-team__tabs .im-tabs__panel h3{
  margin: 18px 0 10px;
  font-family: var(--im-font-display);
  font-size: clamp(18px,2.2vw,22px);
  line-height: 1.35;
  color: var(--im-white);
}
.page-about .about-team__tabs .im-tabs__panel p{
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--im-text);
  max-width: 58ch;
}
.page-about .about-team__meta{
  margin: 4px 0 0;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--im-blue);
  padding-top: 12px;
  border-top: 1px dashed var(--about-line);
}

/* ---------- 图片 ---------- */
.page-about .about-shot{
  margin: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}
.page-about .about-shot img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--about-line);
  object-fit: cover;
}
.page-about .about-shot figcaption{
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--im-cool);
}
.page-about .about-shot--wide{ margin-top: clamp(24px,3vw,36px); }

/* ---------- 四步流程 ---------- */
.page-about .about-steps{
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-steps li{
  position: relative;
  padding: 0 0 clamp(22px,3vw,30px) 52px;
}
.page-about .about-steps li::before{
  content: "";
  position: absolute;
  left: 15px;
  top: 34px;
  bottom: 0;
  width: 1px;
  background: var(--about-line);
}
.page-about .about-steps li:last-child{ padding-bottom: 0; }
.page-about .about-steps li:last-child::before{ display: none; }
.page-about .about-steps__no{
  position: absolute;
  left: 0;
  top: 0;
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  font-size: 12px;
  color: var(--im-mint);
  border: 1px solid var(--im-mint);
}
.page-about .about-steps li:first-child .about-steps__no{
  background: var(--im-mint);
  color: var(--im-ink);
  border-color: var(--im-mint);
}
.page-about .about-steps h3{
  margin: 4px 0 8px;
  font-family: var(--im-font-display);
  font-size: 19px;
  line-height: 1.3;
  color: var(--im-white);
}
.page-about .about-steps p{
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--im-text);
  max-width: 62ch;
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-scope{
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line-soft);
  border-top: 1px solid var(--about-line);
}
.page-about .about-scope__row{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 8px;
  padding: 18px 0;
  background: var(--im-ink);
}
.page-about .about-scope__row dt{
  font-size: 22px;
  line-height: 1;
  color: var(--im-mint);
  letter-spacing: .02em;
}
.page-about .about-scope__row dd{
  margin: 0;
  min-width: 0;
}
.page-about .about-scope__row dd strong{
  display: block;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--im-white);
  margin-bottom: 6px;
}
.page-about .about-scope__row dd p{
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--im-text-dim);
  max-width: 60ch;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners{
  display: grid;
  gap: clamp(24px,3vw,36px);
  grid-template-columns: minmax(0,1fr);
}
.page-about .about-partners__text > p{
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--im-text);
  max-width: 58ch;
}
.page-about .about-partners__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-about .about-partners__list li{
  display: grid;
  grid-template-columns: 46px minmax(0,1fr);
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--about-line-soft);
}
.page-about .about-partners__num{
  font-size: 17px;
  line-height: 1.2;
  color: var(--im-blue);
}
.page-about .about-partners__list strong{
  display: block;
  font-size: 15px;
  color: var(--im-white);
  margin-bottom: 5px;
}
.page-about .about-partners__list p{
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--im-text-dim);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline{
  border-left: 1px solid var(--about-line);
  margin-left: 5px;
}
.page-about .about-timeline .im-acc__item{
  position: relative;
  padding-left: 22px;
}
.page-about .about-timeline .im-acc__item::before{
  content: "";
  position: absolute;
  left: -5px;
  top: 20px;
  width: 9px;
  height: 9px;
  background: var(--im-ink);
  border: 1px solid var(--im-mint);
}
.page-about .about-timeline .im-acc__trigger{
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 12px 0;
  cursor: pointer;
  color: inherit;
  font: inherit;
}
.page-about .about-timeline .im-acc__trigger:hover .about-tl__name,
.page-about .about-timeline .im-acc__trigger:focus-visible .about-tl__name{
  color: var(--im-mint);
}
.page-about .about-timeline .im-acc__trigger:focus-visible{
  outline: 1px solid var(--im-mint);
  outline-offset: 3px;
}
.page-about .about-tl__year{
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--im-orange);
  min-width: 42px;
}
.page-about .about-tl__name{
  font-family: var(--im-font-display);
  font-size: clamp(16px,2vw,19px);
  line-height: 1.35;
  color: var(--im-white);
  transition: color .18s ease;
}
.page-about .about-timeline .im-acc__panel{
  padding: 0 0 18px;
}
.page-about .about-timeline .im-acc__panel p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--im-text-dim);
  max-width: 62ch;
}

/* ---------- 荣誉与承诺 ---------- */
.page-about .about-quote{
  margin: 0 0 clamp(22px,3vw,32px);
  padding: 20px 22px;
  border-left: 3px solid var(--im-mint);
  background: var(--im-night);
}
.page-about .about-quote p{
  margin: 0;
  font-size: clamp(15px,1.8vw,17px);
  line-height: 1.85;
  color: var(--im-white);
  max-width: 60ch;
}
.page-about .about-honors{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line-soft);
}
.page-about .about-honor{
  background: var(--im-ink);
  padding: 14px 0 14px 20px;
  position: relative;
  cursor: default;
  outline: none;
}
.page-about .about-honor::before{
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 8px;
  height: 1px;
  background: var(--im-cool);
  transition: background-color .18s ease, width .18s ease;
}
.page-about .about-honor:hover::before,
.page-about .about-honor:focus-visible::before{
  background: var(--im-mint);
  width: 14px;
}
.page-about .about-honor__name{
  display: block;
  font-size: 15px;
  line-height: 1.6;
  color: var(--im-white);
}
.page-about .about-honor__note{
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--im-text-dim);
  max-width: 62ch;
}

/* ---------- 下一步 ---------- */
.page-about .about-next{
  list-style: none;
  margin: 0;
  padding: 1px;
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}
.page-about .about-next li{ background: var(--im-night); }
.page-about .about-next a{
  display: grid;
  gap: 7px;
  padding: 18px 20px 20px;
  text-decoration: none;
  transition: background-color .18s ease;
}
.page-about .about-next a:hover,
.page-about .about-next a:focus-visible{
  background: rgba(53,240,180,.08);
  outline: none;
}
.page-about .about-next strong{
  font-family: var(--im-font-display);
  font-size: 17px;
  line-height: 1.4;
  color: var(--im-white);
}
.page-about .about-next a:hover strong,
.page-about .about-next a:focus-visible strong{ color: var(--im-mint); }
.page-about .about-next span{
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--im-text-dim);
}
.page-about .about-contact-line{
  margin: 20px 0 0;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--im-cool);
  word-break: break-word;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px){
  .page-about .about-facts{ grid-template-columns: repeat(4,minmax(0,1fr)); }
  .page-about .about-next{ grid-template-columns: repeat(2,minmax(0,1fr)); }
  .page-about .about-scope__row{
    grid-template-columns: 110px minmax(0,1fr);
    gap: 20px;
    align-items: start;
    padding: 20px 0;
  }
  .page-about .about-scope__row dt{ padding-top: 2px; }
}

@media (min-width: 920px){
  .page-about .about-shell{
    grid-template-columns: var(--about-rail) minmax(0,1fr);
    gap: clamp(32px,4vw,60px);
  }
  .page-about .about-index{
    position: sticky;
    top: 104px;
    align-self: start;
    border-top: none;
    border-left: 1px solid var(--im-mint);
    padding: 2px 0 0 16px;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
  }
  .page-about .about-index ol{
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-about .about-index li{ flex: 0 0 auto; }
  .page-about .about-index a{
    border: none;
    padding: 7px 0;
    white-space: normal;
  }
  .page-about .about-index a:hover,
  .page-about .about-index a:focus-visible{
    background: none;
  }

  .page-about .about-hero{ padding-top: clamp(10px,2vw,20px); }
  .page-about .about-origin-grid{
    grid-template-columns: minmax(0,1.35fr) minmax(0,.85fr);
    align-items: start;
  }
  .page-about .about-team{
    grid-template-columns: minmax(0,1.05fr) minmax(0,.95fr);
    align-items: start;
  }
  .page-about .about-partners{
    grid-template-columns: minmax(0,1.1fr) minmax(0,.9fr);
    align-items: start;
  }
  .page-about .about-shot--wide{ max-width: 82%; }
}

@media (prefers-reduced-motion: reduce){
  .page-about *{
    transition: none !important;
    animation: none !important;
  }
}
</｜｜DSML｜｜ parameter>
</result>