.page-about{
  --a-plate-w: 168px;
  --a-line: rgba(27,22,19,.14);
  --a-body-ink: rgba(27,22,19,.74);
  background: var(--cream);
  color: var(--ink);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  position: relative;
  background: var(--green);
  color: var(--cream);
  padding: 32px 0 56px;
  overflow: hidden;
}

.page-about .about-hero__grid{
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(244,237,225,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,237,225,.07) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.page-about .about-hero__edge{
  position: absolute;
  top: 0;
  right: -80px;
  bottom: 0;
  width: 300px;
  background: repeating-linear-gradient(74deg, rgba(240,90,34,.45) 0 2px, transparent 2px 16px);
  opacity: .55;
  pointer-events: none;
}

.page-about .about-hero__inner{
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .about-hero .breadcrumb{
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(244,237,225,.6);
}

.page-about .about-hero .breadcrumb a{
  color: var(--cream);
  text-decoration: none;
}

.page-about .about-hero .breadcrumb a:hover{
  color: var(--orange-lt);
}

.page-about .about-hero__eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-about .about-hero__eyebrow .pulse{
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--cyan);
}

.page-about .about-hero__title{
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2.05rem, 7vw, 4.4rem);
  line-height: 1.06;
  letter-spacing: -.02em;
  max-width: 20ch;
}

.page-about .about-hero__lede{
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(244,237,225,.82);
}

.page-about .about-stats{
  margin: 10px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 1px;
  background: rgba(244,237,225,.16);
  border: 1px solid rgba(244,237,225,.16);
}

.page-about .about-stats__cell{
  background: var(--green);
  padding: 14px 14px 16px;
}

.page-about .about-stats dt{
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(244,237,225,.6);
}

.page-about .about-stats dd{
  margin: 6px 0 0;
  display: flex;
  align-items: baseline;
}

.page-about .about-stats__num{
  font-size: clamp(1.35rem, 4vw, 2rem);
  font-weight: 700;
  color: var(--orange-lt);
}

.page-about .about-stats__unit{
  margin-left: 5px;
  font-size: 12px;
  color: rgba(244,237,225,.72);
}

/* ---------- 章节外壳 ---------- */
.page-about .about-flow{
  padding-bottom: 24px;
}

.page-about .about-chapter{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 18px;
  padding: 56px 0;
  border-top: 1px solid var(--a-line);
}

.page-about .about-plate{
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-self: start;
  border-left: 2px solid var(--orange);
  padding-left: 12px;
}

.page-about .about-plate__num{
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--orange);
}

.page-about .about-plate__label{
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--grey);
}

.page-about .about-chapter__body{
  max-width: 820px;
  min-width: 0;
}

.page-about .about-chapter--wide .about-chapter__body{
  max-width: none;
}

.page-about .about-chapter h2{
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.55rem, 3.6vw, 2.35rem);
  line-height: 1.16;
  letter-spacing: -.01em;
}

.page-about .about-lead{
  margin: 0 0 28px;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--a-body-ink);
}

.page-about .about-note{
  margin: 20px 0 0;
  max-width: 58ch;
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--a-body-ink);
}

/* ---------- 图 ---------- */
.page-about .about-figure{
  margin: 0 0 32px;
}

.page-about .about-figure img,
.page-about .about-team__figure img,
.page-about .about-city__figure img{
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--a-line);
}

.page-about .about-figure figcaption,
.page-about .about-team__figure figcaption,
.page-about .about-city__figure figcaption{
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--grey);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline{
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-timeline::before{
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--a-line);
}

.page-about .about-timeline__item{
  position: relative;
  padding: 0 0 28px 30px;
}

.page-about .about-timeline__item:last-child{
  padding-bottom: 0;
}

.page-about .about-timeline__item::before{
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 11px;
  height: 11px;
  background: var(--orange);
  border: 1px solid var(--cream);
  box-sizing: border-box;
}

.page-about .about-timeline__item.is-now::before{
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-about .about-timeline__year{
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-about .about-timeline__card h3{
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .01em;
}

.page-about .about-timeline__card p{
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--a-body-ink);
}

/* ---------- 四条内容线 ---------- */
.page-about .about-lines{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--a-line);
  border: 1px solid var(--a-line);
}

.page-about .about-line{
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--warm);
  padding: 24px 22px 22px;
  transition: background .18s var(--ease);
}

.page-about .about-line:hover{
  background: #fff;
}

.page-about .about-line__num{
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--orange);
}

.page-about .about-line h3{
  margin: 0;
  font-size: 17px;
  font-weight: 700;
}

.page-about .about-line p{
  margin: 0;
  flex: 1;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--a-body-ink);
}

.page-about .about-link{
  align-self: flex-start;
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

.page-about .about-link:hover{
  color: var(--green);
}

.page-about .about-link--big{
  margin-top: 6px;
  font-size: 14px;
}

/* ---------- 团队 ---------- */
.page-about .about-team{
  display: grid;
  gap: 32px;
}

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

.page-about .about-team__figure{
  margin: 0;
}

.page-about .about-ring{
  position: relative;
  width: min(100%, 250px);
  margin: 0 auto 22px;
}

.page-about .about-ring svg{
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-ring__track{
  fill: none;
  stroke: rgba(27,22,19,.08);
  stroke-width: 18;
}

.page-about .about-ring__seg{
  fill: none;
  stroke-width: 18;
  transition: stroke-width .2s var(--ease);
}

.page-about .about-ring__seg--a{ stroke: var(--orange); }
.page-about .about-ring__seg--b{ stroke: var(--green-lt); }
.page-about .about-ring__seg--c{ stroke: var(--orange-lt); }

.page-about .about-ring__seg:hover{
  stroke-width: 26;
}

.page-about .about-ring__core{
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 2px;
}

.page-about .about-ring__num{
  font-size: clamp(1.8rem, 6vw, 2.5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}

.page-about .about-ring__core small{
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--grey);
}

.page-about .about-legend{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--a-line);
  border: 1px solid var(--a-line);
}

.page-about .about-legend__item{
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--warm);
  padding: 12px 14px;
  font-size: 14px;
}

.page-about .about-legend__dot{
  width: 10px;
  height: 10px;
  flex: none;
}

.page-about .about-legend__item--a .about-legend__dot{ background: var(--orange); }
.page-about .about-legend__item--b .about-legend__dot{ background: var(--green-lt); }
.page-about .about-legend__item--c .about-legend__dot{ background: var(--orange-lt); }

.page-about .about-legend__name{
  flex: 1;
  min-width: 0;
}

.page-about .about-legend__n{
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-duty{
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--a-body-ink);
}

/* ---------- 排期表 ---------- */
.page-about .about-tablewrap{
  overflow-x: auto;
  border: 1px solid var(--a-line);
}

.page-about .about-cadence{
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-about .about-cadence caption{
  text-align: left;
  padding: 14px 16px 10px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--grey);
  background: var(--warm);
}

.page-about .about-cadence th,
.page-about .about-cadence td{
  text-align: left;
  padding: 13px 16px;
  vertical-align: top;
  line-height: 1.7;
}

.page-about .about-cadence thead th{
  background: var(--green);
  color: var(--cream);
  font-size: 12px;
  letter-spacing: .1em;
  font-weight: 700;
}

.page-about .about-cadence tbody th{
  font-weight: 700;
  white-space: nowrap;
  color: var(--orange);
  background: var(--warm);
}

.page-about .about-cadence tbody td{
  background: var(--warm);
  color: var(--a-body-ink);
  border-bottom: 1px solid var(--a-line);
}

.page-about .about-cadence tbody tr:last-child td,
.page-about .about-cadence tbody tr:last-child th{
  border-bottom: none;
}

/* ---------- 天津 ---------- */
.page-about .about-city{
  display: grid;
  gap: 28px;
}

.page-about .about-city__figure{
  margin: 0;
}

.page-about .about-city__text p{
  margin: 0 0 16px;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--a-body-ink);
}

/* ---------- 下一步 ---------- */
.page-about .about-next{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--a-line);
  border: 1px solid var(--a-line);
}

.page-about .about-next a{
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  background: var(--warm);
  padding: 22px 20px;
  color: var(--ink);
  text-decoration: none;
  transition: background .18s var(--ease);
}

.page-about .about-next a:hover{
  background: #fff;
}

.page-about .about-next__num{
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--orange);
}

.page-about .about-next strong{
  font-size: 16px;
  line-height: 1.5;
  font-weight: 700;
}

.page-about .about-next__hint{
  margin-top: auto;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--green-lt);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px){
  .page-about .about-stats{
    grid-template-columns: repeat(4, minmax(0,1fr));
    max-width: 880px;
  }

  .page-about .about-lines{
    grid-template-columns: repeat(2, minmax(0,1fr));
  }

  .page-about .about-next{
    grid-template-columns: repeat(2, minmax(0,1fr));
  }
}

@media (min-width: 820px){
  .page-about .about-hero{
    padding: 44px 0 72px;
  }

  .page-about .about-city{
    grid-template-columns: minmax(0,1.05fr) minmax(0,.95fr);
    gap: 44px;
    align-items: center;
  }

  .page-about .about-team{
    grid-template-columns: minmax(0,1fr) minmax(0,.85fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-team__figure{
    margin-top: 8px;
  }
}

@media (min-width: 900px){
  .page-about .about-chapter{
    grid-template-columns: var(--a-plate-w) minmax(0,1fr);
    gap: 48px;
    padding: 88px 0;
  }

  .page-about .about-plate{
    position: sticky;
    top: calc(var(--strip-h) + 28px);
  }

  .page-about .about-chapter h2{
    margin-bottom: 16px;
  }
}

@media (min-width: 1000px){
  .page-about .about-next{
    grid-template-columns: repeat(4, minmax(0,1fr));
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about .about-line,
  .page-about .about-next a,
  .page-about .about-ring__seg{
    transition: none;
  }
}