.page-about{
  --ab-hair: rgba(244,239,230,.14);
  --ab-hair-2: rgba(244,239,230,.3);
  --ab-wash: rgba(19,41,63,.72);
  --ab-wash-soft: rgba(19,41,63,.5);
  --ab-rail: 118px;
  position: relative;
  padding-bottom: clamp(48px,8vw,100px);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb{
  margin: clamp(16px,3.4vw,30px) 0 0;
}

/* ---------- 章节索引胶囊 ---------- */
.page-about .index-rail{
  display: none;
}
@media (min-width: 1280px){
  .page-about .index-rail{
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 30;
  }
}
@media (min-width: 1280px){
  .page-about .index-link{
    font-size: 12px;
    letter-spacing: .04em;
    padding: 6px 12px;
    border-radius: var(--r-pill);
    border: 1px solid transparent;
    color: var(--text-dim);
    text-decoration: none;
    white-space: nowrap;
    transition: color .2s ease, border-color .2s ease, background .2s ease;
  }
  .page-about .index-link:hover,
  .page-about .index-link.is-active{
    color: var(--cream);
    border-color: rgba(47,230,200,.5);
    background: rgba(47,230,200,.08);
  }
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  position: relative;
  padding: clamp(22px,4vw,38px) 0 clamp(40px,6vw,72px);
  overflow: hidden;
}
.page-about .about-hero::before{
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(244,239,230,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,239,230,.05) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 92% at 72% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(120% 92% at 72% 0%, #000 0%, transparent 72%);
  opacity: .75;
}
.page-about .about-hero__grid{
  position: relative;
  display: grid;
  gap: 30px;
}
@media (min-width: 960px){
  .page-about .about-hero__grid{
    grid-template-columns: minmax(0,1.5fr) minmax(0,.85fr);
    gap: clamp(30px,4vw,64px);
    align-items: end;
  }
}
.page-about .about-hero h1{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px,7.6vw,78px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--cream);
  margin: 14px 0 20px;
  max-width: 18ch;
}
.page-about .about-hero__lede{
  max-width: 62ch;
  margin: 0 0 24px;
  font-size: clamp(15.5px,1.15vw,17.5px);
  line-height: 1.78;
  color: var(--text);
}
.page-about .about-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero__stats{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(96px,1fr));
  gap: 10px;
}
.page-about .about-hero__stats .stat-card{
  background: linear-gradient(160deg, rgba(19,41,63,.92), rgba(11,27,43,.55));
  border: 1px solid var(--ab-hair);
  border-radius: var(--r-md);
  padding: 14px 14px 12px;
}
.page-about .about-hero__stats .stat-card__value{
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px,3.6vw,34px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--cyan);
}
.page-about .about-hero__stats .stat-card__label{
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-dim);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-section{
  padding-top: clamp(48px,7vw,96px);
}
.page-about .section-head{
  max-width: 68ch;
}
.page-about .section-head__title{
  margin: 10px 0 12px;
}
.page-about .section-head__lede{
  color: var(--text);
  max-width: 62ch;
}

/* ---------- 01 时间线 ---------- */
.page-about .about-tl-figure{
  margin: clamp(24px,3.6vw,34px) 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--ab-hair);
}
.page-about .media-frame img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .timeline{
  list-style: none;
  margin: clamp(30px,4.4vw,52px) 0 0;
  padding: 0;
}
.page-about .tl-item{
  position: relative;
  display: grid;
  grid-template-columns: 66px minmax(0,1fr);
  gap: 14px;
  padding-bottom: 32px;
}
.page-about .tl-item:last-child{
  padding-bottom: 0;
}
.page-about .tl-mark{
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.page-about .tl-mark::after{
  content: "";
  position: absolute;
  top: 0;
  bottom: -32px;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(182,92,58,.55), rgba(244,239,230,.05));
  z-index: 0;
}
.page-about .tl-item:last-child .tl-mark::after{
  display: none;
}
.page-about .tl-dot{
  position: relative;
  z-index: 1;
  flex: none;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--clay);
  box-shadow: 0 0 0 5px rgba(182,92,58,.16);
}
.page-about .tl-year{
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--cream);
  padding: 5px 11px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(182,92,58,.55);
  background: linear-gradient(180deg, rgba(182,92,58,.34), rgba(182,92,58,.16)), var(--deep);
}
.page-about .tl-body{
  padding-top: 2px;
}
.page-about .tl-title{
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(18px,2.3vw,23px);
  line-height: 1.42;
  color: var(--cream);
  margin: 0 0 8px;
}
.page-about .tl-body > p{
  margin: 0 0 12px;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text);
}
.page-about .tl-body .tag-row{
  margin-top: 2px;
}
.page-about .tl-body .disclosure{
  margin-top: 4px;
}
@media (min-width: 900px){
  .page-about .tl-item{
    grid-template-columns: var(--ab-rail) minmax(0,1fr);
    gap: 32px;
    padding-bottom: 46px;
  }
  .page-about .tl-mark{
    align-items: flex-start;
    gap: 12px;
  }
  .page-about .tl-mark::after{
    left: 6px;
    transform: none;
    bottom: -46px;
  }
  .page-about .tl-year{
    font-size: 16px;
    padding: 7px 15px;
  }
  .page-about .tl-body > p{
    font-size: 16px;
  }
  .page-about .tl-item:nth-child(even) .tl-body{
    background: var(--ab-wash);
    border: 1px solid var(--ab-hair);
    border-radius: var(--r-md);
    padding: 18px 22px 16px;
  }
}

/* ---------- 02 登记流程 ---------- */
.page-about .process{
  margin-top: clamp(28px,4vw,44px);
  display: grid;
  gap: 12px;
}
@media (min-width: 720px){
  .page-about .process{
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 16px;
  }
}
@media (min-width: 1100px){
  .page-about .process{
    grid-template-columns: repeat(4, minmax(0,1fr));
    gap: 18px;
  }
}
.page-about .process-step{
  position: relative;
  overflow: hidden;
  padding: 22px 20px 24px;
  border-radius: var(--r-md);
  border: 1px solid var(--ab-hair);
  border-top: 2px solid rgba(47,230,200,.5);
  background: linear-gradient(165deg, rgba(19,41,63,.95), rgba(11,27,43,.6));
}
.page-about .process-step::after{
  content: "";
  position: absolute;
  right: -34px;
  top: -34px;
  width: 104px;
  height: 104px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47,230,200,.16), transparent 68%);
  pointer-events: none;
}
.page-about .process-step__no{
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}
.page-about .process-step h3{
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--cream);
}
.page-about .process-step p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--text-dim);
}

/* ---------- 03 岗位分工 ---------- */
.page-about .about-team{
  display: grid;
  gap: 30px;
}
@media (min-width: 960px){
  .page-about .about-team{
    grid-template-columns: minmax(0,1.1fr) minmax(0,.9fr);
    gap: clamp(30px,4vw,58px);
    align-items: start;
  }
}
.page-about .role-list{
  display: grid;
  gap: 14px;
  margin-top: clamp(22px,3.4vw,32px);
}
.page-about .role-card{
  position: relative;
  padding: 20px 20px 18px 24px;
  border-radius: var(--r-md);
  border: 1px solid var(--ab-hair);
  background: rgba(19,41,63,.62);
  transition: border-color .25s ease, background .25s ease;
}
.page-about .role-card::before{
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 999px;
  background: var(--clay);
}
.page-about .role-card__head{
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}
.page-about .role-card__head h3{
  margin: 0;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--cream);
}
.page-about .role-card__count{
  margin-left: auto;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}
.page-about .role-card p{
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.76;
  color: var(--text);
}
.page-about .role-card__tags{
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  transition: opacity .28s ease;
}
@media (hover: hover) and (min-width: 960px){
  .page-about .role-card__tags{
    opacity: .45;
  }
  .page-about .role-card:hover{
    border-color: var(--ab-hair-2);
    background: rgba(19,41,63,.82);
  }
  .page-about .role-card:hover .role-card__tags{
    opacity: 1;
  }
}
.page-about .about-team__figure{
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--ab-hair);
  background: var(--ab-wash-soft);
}

/* ---------- 04 收录结构 ---------- */
.page-about .coverage{
  margin-top: clamp(26px,4vw,44px);
  display: grid;
  gap: 28px;
}
@media (min-width: 900px){
  .page-about .coverage{
    grid-template-columns: minmax(0,.82fr) minmax(0,1.18fr);
    gap: clamp(28px,4vw,56px);
    align-items: start;
  }
}
.page-about .coverage__stats{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px,1fr));
  gap: 12px;
}
.page-about .coverage__stats .stat-card{
  padding: 18px 16px;
  border-radius: var(--r-md);
  border: 1px solid var(--ab-hair);
  background: linear-gradient(160deg, rgba(19,41,63,.92), rgba(11,27,43,.5));
}
.page-about .coverage__stats .stat-card__value{
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px,3.4vw,36px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--cream);
}
.page-about .coverage__stats .stat-card__label{
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--text-dim);
}
.page-about .coverage__note{
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  max-width: 58ch;
}
.page-about .region-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .region{
  padding: 16px 18px 18px;
  border-radius: var(--r-md);
  border: 1px solid rgba(92,122,85,.36);
  background: linear-gradient(140deg, rgba(92,122,85,.2), rgba(19,41,63,.55));
}
.page-about .region__name{
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--cream);
}
.page-about .region__name::before{
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--moss);
}

/* ---------- 05 共建实践 ---------- */
.page-about .together{
  display: grid;
  gap: 28px;
}
@media (min-width: 900px){
  .page-about .together{
    grid-template-columns: minmax(0,.92fr) minmax(0,1.08fr);
    gap: clamp(28px,4vw,58px);
    align-items: center;
  }
}
.page-about .together__figure{
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--ab-hair);
}
.page-about .together__modes{
  list-style: none;
  margin: clamp(20px,3vw,28px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-about .together__modes li{
  display: flex;
  gap: 10px;
  font-size: 15px;
  line-height: 1.74;
  color: var(--text);
}
.page-about .together__modes li::before{
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  margin-top: 10px;
  border-radius: 50%;
  background: var(--gold);
}

/* ---------- 06 同行者 ---------- */
.page-about .partner-grid{
  margin-top: clamp(24px,3.6vw,40px);
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(230px,1fr));
}
.page-about .partner-card{
  padding: 18px 18px 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--ab-hair);
  background: var(--ab-wash-soft);
  border-left: 3px solid rgba(47,230,200,.4);
}
.page-about .partner-card h3{
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 16.5px;
  font-weight: 600;
  color: var(--cream);
}
.page-about .partner-card p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-dim);
}

/* ---------- 07 下一步 ---------- */
.page-about .next-links{
  margin-top: clamp(24px,3.6vw,40px);
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(240px,1fr));
}
.page-about .next-link{
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--ab-hair);
  background: linear-gradient(150deg, rgba(19,41,63,.86), rgba(11,27,43,.45));
  text-decoration: none;
  color: var(--cream);
  transition: border-color .25s ease, background .25s ease;
}
.page-about .next-link:hover{
  border-color: rgba(47,230,200,.55);
  background: linear-gradient(150deg, rgba(19,41,63,.96), rgba(47,230,200,.09));
}
.page-about .next-link__title{
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -.01em;
}
.page-about .next-link__title::after{
  content: "→";
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  color: var(--orange);
}
.page-about .next-link__desc{
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 560px){
  .page-about .about-hero h1{
    max-width: none;
  }
  .page-about .about-hero__stats{
    grid-template-columns: repeat(auto-fit, minmax(86px,1fr));
  }
  .page-about .tl-item{
    grid-template-columns: 58px minmax(0,1fr);
    gap: 12px;
  }
  .page-about .tl-year{
    font-size: 13px;
    padding: 5px 9px;
  }
  .page-about .role-card__count{
    font-size: 22px;
  }
}
</style>
<<<END>>>
</main>