.page-about{
  --about-rule: rgba(27,26,20,.16);
  --about-rule-strong: rgba(27,26,20,.34);
  --about-tl-pad: clamp(20px,3vw,28px);
  background: var(--paper);
  color: var(--brown);
  font-family: var(--font-sans);
  padding-top: clamp(92px,13vw,136px);
  padding-bottom: clamp(56px,8vw,104px);
}

.page-about .about-crumb{
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .4em;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--pad-x) clamp(14px,2vw,22px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mid);
}
.page-about .about-crumb a{
  color: var(--mid);
  text-decoration: none;
  border-bottom: 1px solid rgba(47,107,88,.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible{
  color: var(--brick);
  border-bottom-color: var(--brick);
}
.page-about .about-crumb__sep{ color: var(--sand); }
.page-about .about-crumb > span:last-child{ color: var(--brown); font-weight: 600; }

.page-about .about-hero{
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  gap: clamp(26px,4vw,52px);
}

.page-about .about-hero h1{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px,6.2vw,72px);
  line-height: 1.02;
  letter-spacing: -.02em;
  margin: .34em 0 .42em;
  padding-left: clamp(12px,1.8vw,20px);
  border-left: 4px solid var(--brick);
  max-width: 15em;
}

.page-about .about-lede{
  margin: 0 0 .85em;
  font-size: clamp(15px,1.3vw,18px);
  line-height: 1.8;
  max-width: 36em;
  color: var(--brown);
}
.page-about .about-lede:last-child{ margin-bottom: 0; }

.page-about .about-glance{
  border: var(--bw) solid var(--ink-deep);
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow-hard);
  padding: clamp(16px,2.4vw,26px);
}
.page-about .about-glance__head{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 4px;
  border-bottom: 1px solid rgba(127,166,148,.35);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--sage);
}
.page-about .about-glance__row{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(127,166,148,.26);
}
.page-about .about-glance__row:last-child{ border-bottom: 0; padding-bottom: 0; }
.page-about .about-glance__key{
  font-size: 13px;
  color: var(--sage);
}
.page-about .about-glance__val{
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  color: var(--cyan);
  white-space: nowrap;
}

.page-about .about-body{
  max-width: var(--shell);
  margin: clamp(44px,6vw,88px) auto 0;
  padding: 0 var(--pad-x);
  display: grid;
  gap: clamp(26px,4vw,48px);
}

.page-about .about-index{
  border-bottom: 2px solid var(--brown);
  padding-bottom: 8px;
}
.page-about .about-index__title{
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--brick);
}
.page-about .about-index__list{
  display: flex;
  gap: clamp(12px,3vw,20px);
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-about .about-index__item a{
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  white-space: nowrap;
  padding: 6px 0;
  font-size: 13px;
  color: var(--mid);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .about-index__item a:hover,
.page-about .about-index__item a:focus-visible{
  color: var(--brown);
  border-bottom-color: var(--brick);
}
.page-about .about-index__num{
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--brick);
  letter-spacing: .06em;
}

.page-about .about-section{
  scroll-margin-top: calc(var(--header-offset) + 16px);
  padding-top: clamp(24px,3.4vw,40px);
}
.page-about .about-section + .about-section{
  margin-top: clamp(34px,5vw,64px);
  border-top: 2px solid var(--brown);
}

.page-about .about-section__head{
  display: flex;
  align-items: baseline;
  gap: clamp(10px,1.6vw,16px);
  margin-bottom: clamp(14px,2.2vw,24px);
}
.page-about .about-section__num{
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--brick);
  border: 2px solid var(--brick);
  padding: 1px 7px;
  flex: none;
}
.page-about .about-section h2{
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
  font-size: clamp(23px,3.4vw,38px);
  line-height: 1.12;
  margin: 0;
}

.page-about .about-text p{
  margin: 0 0 1.05em;
  font-size: clamp(15px,1.15vw,17px);
  line-height: 1.8;
  max-width: 38em;
  color: var(--brown);
}
.page-about .about-text p:last-child{ margin-bottom: 0; }
.page-about .about-text--after{ margin-top: clamp(20px,3vw,32px); }

.page-about .about-figure{
  margin: clamp(20px,3vw,32px) 0 0;
  border: 3px solid var(--ink-deep);
  background: var(--sand);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}
.page-about .about-figure--tight{ margin-top: clamp(16px,2.4vw,24px); }
.page-about .about-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-figure figcaption{
  padding: 10px 14px;
  background: var(--paper);
  border-top: 2px solid var(--ink-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--mid);
}

.page-about .about-shifts{
  display: grid;
  gap: 16px;
  margin-top: clamp(20px,3vw,32px);
}
.page-about .shift{
  border: 3px solid var(--ink-deep);
  box-shadow: var(--shadow-hard);
  padding: clamp(15px,2vw,22px);
  color: var(--paper);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.page-about .shift--1{ background: var(--mid); }
.page-about .shift--2{ background: var(--ink); }
.page-about .shift--3{ background: var(--brick); }
.page-about .shift:hover,
.page-about .shift:focus-within{
  transform: translateX(6px);
  background: var(--ink-deep);
}
.page-about .shift__time{
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
  margin-bottom: 8px;
}
.page-about .shift__name{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px,2.4vw,26px);
  line-height: 1.1;
  margin: 0 0 8px;
}
.page-about .shift__do{
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--paper);
}

.page-about .about-sources{
  display: grid;
  gap: clamp(20px,3vw,34px);
}
.page-about .source{
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--about-rule);
}
.page-about .source:first-child{ padding-top: 0; }
.page-about .source:last-child{ border-bottom: 0; padding-bottom: 0; }
.page-about .source__count{
  flex: none;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  line-height: .95;
  font-variant-numeric: tabular-nums;
  color: var(--brick);
}
.page-about .source__name{
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}
.page-about .source__desc{
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mid);
}

.page-about .about-timeline{
  list-style: none;
  margin: clamp(20px,3vw,32px) 0 0;
  padding: 0 0 0 var(--about-tl-pad);
  border-left: 2px solid var(--brown);
}
.page-about .tl{
  position: relative;
  padding-bottom: clamp(14px,2.2vw,22px);
}
.page-about .tl::before{
  content: "";
  position: absolute;
  top: .62em;
  left: calc(-1 * var(--about-tl-pad) - 5px);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brick);
  box-shadow: 0 0 0 3px var(--paper);
}
.page-about .tl__item{
  transition: transform var(--dur) var(--ease);
}
.page-about .tl__item:hover{ transform: translateX(4px); }
.page-about .tl__sum{
  display: flex;
  align-items: baseline;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  padding: 2px 0;
}
.page-about .tl__sum::-webkit-details-marker{ display: none; }
.page-about .tl__sum::before{
  content: "＋";
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  color: var(--brick);
  flex: none;
}
.page-about .tl__item[open] .tl__sum::before{ content: "－"; }
.page-about .tl__sum:focus-visible{
  outline: 3px solid var(--cyan);
  outline-offset: 2px;
}
.page-about .tl__year{
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--mid);
  flex: none;
}
.page-about .tl__name{
  font-size: clamp(15px,1.4vw,17px);
  font-weight: 700;
  line-height: 1.5;
}
.page-about .tl__body{
  padding: 8px 0 0 25px;
}
.page-about .tl__body p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  max-width: 34em;
  color: var(--brown);
}

.page-about .about-push{
  border-top: 0;
  margin-top: clamp(34px,5vw,64px);
  background: var(--ink);
  color: var(--paper);
  border: 3px solid var(--ink-deep);
  box-shadow: var(--shadow-hard);
  padding: clamp(22px,3.4vw,42px);
  scroll-margin-top: calc(var(--header-offset) + 16px);
}
.page-about .about-push .about-section__head{ margin-bottom: clamp(18px,2.6vw,28px); }
.page-about .about-section__num--ink{
  color: var(--amber);
  border-color: var(--amber);
}
.page-about .about-push h2{ color: var(--paper); }
.page-about .about-push__grid{
  display: grid;
  gap: clamp(20px,3vw,40px);
}
.page-about .push-num{
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px,4.4vw,46px);
  line-height: 1;
  color: var(--cyan);
}
.page-about .push-unit{
  font-size: .46em;
  letter-spacing: .06em;
  color: var(--sage);
}
.page-about .push-label{
  margin: 8px 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--sage);
}
.page-about .push-text{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  max-width: 34em;
  color: var(--paper);
}
.page-about .push-item + .push-item{ border-top: 1px solid rgba(127,166,148,.3); padding-top: clamp(18px,2.6vw,26px); }

.page-about .about-next{
  margin-top: clamp(34px,5vw,64px);
  padding-top: clamp(22px,3vw,36px);
  border-top: 2px solid var(--brown);
}
.page-about .about-next h2{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px,3vw,32px);
  line-height: 1.15;
  margin: 0 0 .5em;
}
.page-about .about-next__lede{
  margin: 0 0 clamp(16px,2.4vw,24px);
  font-size: clamp(15px,1.15vw,17px);
  line-height: 1.8;
  max-width: 38em;
}
.page-about .about-next__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-next__link{
  display: inline-block;
  padding: 10px 18px;
  border: var(--bw) solid var(--brown);
  color: var(--brown);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  background: var(--paper);
  box-shadow: var(--shadow-soft);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible{
  background: var(--ink);
  color: var(--cyan);
  transform: translate(-2px,-2px);
  box-shadow: var(--shadow-hard);
}
.page-about .about-next__link:active{
  transform: translate(0,0);
  box-shadow: var(--shadow-soft);
}

@media (min-width: 640px){
  .page-about .about-push__grid{ grid-template-columns: 1fr 1fr; }
  .page-about .push-item + .push-item{
    border-top: 0;
    border-left: 1px solid rgba(127,166,148,.3);
    padding-top: 0;
    padding-left: clamp(18px,2.6vw,30px);
  }
}

@media (min-width: 820px){
  .page-about .about-sources{ grid-template-columns: minmax(0,.92fr) minmax(0,1.08fr); }
  .page-about .about-sources__list{
    border-right: 1px solid var(--about-rule-strong);
    padding-right: clamp(18px,2.4vw,30px);
  }
  .page-about .about-shifts{
    grid-template-columns: 1fr 1.06fr .96fr;
    gap: clamp(16px,2.2vw,26px);
    align-items: start;
  }
  .page-about .shift--2{ margin-top: 18px; }
  .page-about .shift--3{ margin-top: 36px; }
}

@media (min-width: 900px){
  .page-about .about-hero{
    grid-template-columns: minmax(0,1.15fr) minmax(0,.85fr);
    align-items: start;
    gap: clamp(32px,4.5vw,64px);
  }
}

@media (min-width: 960px){
  .page-about .about-body{
    grid-template-columns: 168px minmax(0,1fr);
    gap: clamp(32px,4vw,64px);
    align-items: start;
  }
  .page-about .about-index{
    position: sticky;
    top: calc(var(--header-offset) + 12px);
    align-self: start;
    border-bottom: 0;
    border-left: 2px solid var(--brown);
    padding: 0 0 0 clamp(12px,1.6vw,18px);
  }
  .page-about .about-index__title{ margin-bottom: 10px; }
  .page-about .about-index__list{
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-about .about-index__item a{
    display: flex;
    width: 100%;
    padding: 7px 0;
    border-bottom: 0;
    border-left: 0;
  }
  .page-about .about-index__item a:hover,
  .page-about .about-index__item a:focus-visible{
    border-bottom: 0;
    padding-left: 4px;
  }
  .page-about .about-section:first-child{ padding-top: 0; }
}

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