.history-page{--history-navy:#163047;--history-orange:#c34422;--history-side:5.5vw;--history-gutter:clamp(48px,8vw,128px)}
.history-main{width:100%;margin:0}
.history-page [hidden]{display:none!important}
.history-breadcrumb{display:flex;align-items:center;gap:14px;width:89%;max-width:1500px;margin:auto;padding-top:25px;color:#626a66;font-size:.875rem}
.history-breadcrumb a:hover{text-decoration:underline;text-underline-offset:4px}
.history-heading{display:grid;grid-template-columns:1.4fr 1fr;gap:6vw;align-items:end;max-width:1500px;width:89%;margin:0 auto;padding:54px 0 62px}
.history-kicker{margin:0 0 28px;color:var(--history-orange);font-size:.875rem;letter-spacing:.14em}
.history-heading h1{margin:0;font:500 min(5.7vw,5.2rem)/1.38 var(--serif);letter-spacing:.055em;text-align:left;white-space:normal}
.history-heading h1>span{display:block;white-space:nowrap}
.history-intro{padding-bottom:8px}
.history-intro>p:last-child{margin:22px 0 0;font-size:1rem;line-height:2.1;color:#56605a;letter-spacing:.08em}
.history-range{font:500 clamp(1.5rem,3.5vw,3.4rem)/1.1 'Helvetica Neue',Arial,sans-serif;letter-spacing:-.035em;margin:0;color:var(--history-navy)}
.history-range span{color:var(--history-orange);margin:0 .12em}
.timeline-toolbar{position:sticky;top:0;z-index:8;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:0 24px;padding:14px var(--history-side);border-block:1px solid #cbd1cd;background:#f7f7f5f7;backdrop-filter:blur(14px)}
.timeline-column-labels{position:relative;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--history-gutter);flex-basis:100%;margin-top:12px;padding-top:13px;border-top:1px solid #cbd1cd;font-size:.875rem;line-height:1.7;letter-spacing:.12em;color:var(--history-navy)}
.timeline-column-labels::before{content:"";position:absolute;top:0;bottom:-15px;left:50%;width:1px;background:#84949b;transform:translateX(-50%)}
.timeline-column-labels>span:first-child{color:var(--history-orange)}
.track-name{display:none}
.history-year-nav{display:flex;align-items:center;flex-wrap:wrap;gap:clamp(12px,2.8vw,42px)}
.history-year-nav a{position:relative;padding:9px 0;font:500 .875rem/1.5 'Helvetica Neue',Arial,sans-serif;color:#5d6660;letter-spacing:.035em}
.history-year-nav a[aria-current=true]{color:var(--history-orange)}
.history-year-nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--history-orange);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.history-year-nav a[aria-current=true]::after,.history-year-nav a:hover::after{transform:scaleX(1)}
.timeline-toggle{display:flex;align-items:center;gap:9px;flex-shrink:0;min-height:44px;cursor:pointer;font-size:.875rem;color:#364b54}
.timeline-toggle input{width:18px;height:18px;margin:0;accent-color:var(--history-navy);cursor:pointer;flex-shrink:0}
.history-timeline ol{list-style:none;padding:0;margin:0}
.history-milestone{--chapter-ink:var(--ink);--chapter-muted:#56605a;--chapter-spine:#84949b;--chapter-marker:var(--history-orange);--chapter-pad:80px;position:relative;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--history-gutter);align-items:start;margin:0;padding:var(--chapter-pad) var(--history-side);border-bottom:1px solid #d0d6d0;scroll-margin-top:calc(var(--history-toolbar-height,74px) + 12px);color:var(--chapter-ink);isolation:isolate}
.history-milestone::before{content:"";position:absolute;top:0;bottom:-1px;left:50%;width:1px;background:var(--chapter-spine);transform:translateX(-50%);pointer-events:none}
.history-milestone::after{content:"";position:absolute;top:calc(var(--chapter-pad) + 12px);left:50%;width:9px;height:9px;background:var(--chapter-marker);transform:translate(-50%,-50%);pointer-events:none}
.company-track,.world-track{min-width:0}
.milestone-date{margin:0 0 32px}
.milestone-year{display:block;font:500 min(14.8vw,14rem)/.85 'Helvetica Neue',Arial,sans-serif;letter-spacing:-.025em;font-variant-numeric:lining-nums tabular-nums}
.milestone-era{display:block;margin:17px 0 0 .32em;color:var(--chapter-muted);font-size:.875rem;letter-spacing:.13em}
.milestone-label{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px;margin:0 0 13px;font-size:.875rem;line-height:1.7;letter-spacing:.04em;color:var(--history-orange)}
.milestone-label time{white-space:nowrap}
.milestone-label>span{color:#aaada9}
.milestone-copy h2{font:500 clamp(1.65rem,2.8vw,2.7rem)/1.55 var(--serif);letter-spacing:.035em;margin:0 0 20px;overflow-wrap:anywhere}
.milestone-copy>p:not(.milestone-label){max-width:32em;margin:0;font-size:1rem;line-height:2.05;color:var(--chapter-muted)}
.world-event{padding:26px 0 0;border-top:1px solid #adb8bb;color:var(--chapter-ink)}
.world-date{display:flex;flex-wrap:wrap;gap:17px;margin:0 0 16px;font-size:.875rem;line-height:1.7;color:var(--chapter-muted)}
.world-mobile-label{letter-spacing:.07em}
.world-track-name + .world-event{border-top:0;padding-top:0}
.world-event h3{font:500 clamp(1.4rem,2vw,2rem)/1.6 var(--serif);letter-spacing:.025em;margin:0 0 15px;overflow-wrap:anywhere}
.world-event>p:not(.world-date){font-size:1rem;line-height:1.95;color:var(--chapter-muted);margin:0;max-width:38em}
.world-source{display:inline-block;padding:9px 0;margin-top:12px;color:var(--chapter-muted);font-size:.75rem;line-height:1.8;text-decoration:underline;text-underline-offset:4px;text-decoration-color:#929e9f}
.history-photo{margin:0 0 26px}
.history-photo>img{display:block;width:100%;height:auto;max-height:530px;object-fit:contain;object-position:left center}
.history-photo figcaption{font-size:.75rem;line-height:1.8;color:var(--chapter-muted);padding-top:12px}
.history-photo figcaption span{display:block}
.history-photo figcaption a{text-decoration:underline;text-underline-offset:3px}
.chapter-foundation{--chapter-spine:#879ba8;--chapter-marker:#ff966e;--chapter-ink:#fff;--chapter-muted:#c3ced4;background:var(--history-navy);border:0;min-height:590px}
.chapter-foundation .milestone-label,.chapter-dark .milestone-label{color:#ffa580}
.chapter-foundation .milestone-year{color:#fff}
.chapter-foundation .world-event{border-top-color:#74828c}
.chapter-dark{--chapter-spine:#788994;--chapter-marker:#ff966e;--chapter-ink:#f8f8f6;--chapter-muted:#c0c8cc;background:#080d11;border:0}
.chapter-dark .history-photo{margin-bottom:22px}
.chapter-dark .history-photo img{background:#000}
.chapter-dark .world-event{border-top-color:#69747a}
.chapter-present{background:#e8edef;--chapter-ink:var(--history-navy);--chapter-muted:#526570}
.milestone-brand{display:flex;align-items:center;gap:30px;margin:0 0 24px}
.history-yohaku-logo{width:86px;height:auto;aspect-ratio:286/362;flex-shrink:0}
.milestone-brand :is(h2,h3){margin:0}
.history-product-link{display:inline-block;padding-block:8px;margin-top:24px;font-size:1rem;text-decoration:underline;text-underline-offset:6px}
.history-activities{margin-top:32px}
.history-activity{padding:28px 0;border-top:1px solid #b7c2c7}
.history-activity:last-child{padding-bottom:0}
.history-activity h3{font:500 clamp(1.25rem,2.2vw,1.75rem)/1.6 var(--serif);letter-spacing:.025em;overflow-wrap:anywhere}
.history-activity>h3{margin:0 0 12px}
.history-activity-kind{margin:0 0 9px;font-size:.875rem;line-height:1.7;letter-spacing:.07em;color:var(--chapter-muted)}
.history-activity>p:not(.history-activity-kind){margin:0;font-size:1rem;line-height:2.05;color:var(--chapter-muted)}
.history-activity .history-product-link{margin-top:14px}
.yohaku-feature{margin-top:26px}
.yohaku-feature h4{margin:0 0 12px;font:500 clamp(1.125rem,1.8vw,1.5rem)/1.7 var(--serif);letter-spacing:.025em;overflow-wrap:anywhere}
.yohaku-feature>p{margin:0;color:var(--chapter-muted);font-size:1rem;line-height:2.05}
.claim-marker{font-size:.65em;vertical-align:super}
.yohaku-feature .claim-note{margin-top:12px;font-size:.75rem;line-height:1.8}
.yohaku-document{min-width:0;margin:24px 0 0}
.yohaku-document>a{display:block}
.yohaku-document img{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:contain}
/* Show the supplied comparison photograph at x:54, y:237, 1492x1322 within its 1600px square document. */
.yohaku-comparison-viewport{position:relative;aspect-ratio:1492/1322;overflow:hidden}
.yohaku-comparison-viewport img{position:absolute;left:-3.619303%;top:-17.927383%;width:107.238606%;max-width:none;height:auto}
.yohaku-document figcaption{padding-top:12px;font-size:.8125rem;line-height:1.8;color:var(--chapter-muted)}
.yohaku-document figcaption span{display:block;font-size:.75rem;margin-top:3px}
.yohaku-specs{margin-top:24px;border-block:1px solid #b7c2c7}
.yohaku-specs summary{padding:18px 0;font-size:.9375rem;line-height:1.8;cursor:pointer}
.yohaku-specs>p{margin:0;font-size:.9375rem;line-height:2;color:var(--chapter-muted)}
.yohaku-specs[open]{padding-bottom:22px}
.yohaku-document a:focus-visible,.yohaku-specs summary:focus-visible{outline:2px solid var(--history-navy);outline-offset:5px}
.company-only .history-milestone{grid-template-columns:1fr;gap:0}
.company-only .history-milestone::before,.company-only .history-milestone::after,.company-only .timeline-column-labels::before{display:none}
.company-only .timeline-column-labels{grid-template-columns:1fr}
.company-only .company-track{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:7vw;align-items:center}
.company-only .milestone-date{margin:0}
.company-only .chapter-foundation{min-height:0}
.timeline-note{margin:0;padding:24px var(--history-side);font-size:.75rem;line-height:1.9;color:#606c65;border-bottom:1px solid var(--line)}
.history-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.history-company{display:grid;grid-template-columns:30% minmax(0,1fr);gap:60px;width:min(1120px,89%);margin:auto;padding:100px 0;scroll-margin-top:90px}
.history-company-heading h2{font:500 2rem/1.5 var(--serif);letter-spacing:.07em;margin:0}
.history-company-details{margin:0;border-top:1px solid var(--line);font-size:1rem;line-height:1.85}
.history-company-details>div{display:grid;grid-template-columns:6em minmax(0,1fr);gap:24px;padding:20px 0;border-bottom:1px solid var(--line)}
.history-company-details dt{color:#5a655e;font-size:.875rem;padding-top:2px}
.history-company-details dd{margin:0;overflow-wrap:anywhere}
.history-company-details address{font-style:normal}
.equipment-purpose{display:block;margin-top:5px;color:#5a655e;font-size:.875rem}
.history-footer{justify-content:space-between}
.history-footer nav{display:flex;flex-wrap:wrap;gap:28px;font-size:.875rem;line-height:1.7}
.history-footer nav a{padding-block:8px}
.history-footer nav a:hover{text-decoration:underline;text-underline-offset:5px}
@media(min-width:1800px){.history-page{--history-side:max(5.5vw,calc((100vw - 1500px)/2))}}
@media(max-width:1050px){
  .history-heading{gap:5vw}
  .history-milestone{--chapter-pad:65px}
  .milestone-year{font-size:min(14vw,10rem)}
  .history-year-nav{gap:20px}
  .timeline-toggle{font-size:.8125rem}
  .milestone-brand{gap:20px}
  .history-yohaku-logo{width:66px}
}
@media(max-width:760px){
  .history-heading{grid-template-columns:1fr;gap:28px;padding:34px 0 40px}
  .history-kicker{font-size:.75rem;margin-bottom:20px}
  .history-heading h1{font-size:min(10vw,4.5rem)}
  .history-intro{display:flex;align-items:flex-start;gap:24px;justify-content:space-between;padding:0}
  .history-range{font-size:1.5rem;white-space:nowrap;padding-top:3px}
  .history-intro>p:last-child{font-size:.8125rem;letter-spacing:0;line-height:1.9;margin:0}
  .timeline-toolbar{position:sticky;flex-wrap:wrap;gap:2px;padding-block:6px}
  .history-timeline{--history-toolbar-height:96px}
  .history-year-nav{display:grid;grid-template-columns:repeat(7,minmax(max-content,1fr));grid-auto-flow:row;gap:0 6px;width:100%;min-width:0;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin}
  .history-year-nav a{font-size:.875rem;text-align:center;padding:10px 0}
  .timeline-toggle{min-height:32px;font-size:.875rem;margin-left:auto}
  .timeline-column-labels{display:none}
  .history-milestone{--chapter-pad:48px;display:block;padding:var(--chapter-pad) var(--history-side) var(--chapter-pad) calc(var(--history-side) + 24px)}
  .history-milestone::before,.history-milestone::after{left:var(--history-side)}
  .track-name{display:block;margin:0 0 24px;font-size:.875rem;line-height:1.7;letter-spacing:.08em}
  .company-track-name{color:var(--chapter-marker)}
  .world-track-name{color:var(--chapter-muted);margin-bottom:22px}
  .company-only .history-milestone{padding-left:var(--history-side)}
  .milestone-year{font-size:min(26vw,11rem)}
  .milestone-date{margin-bottom:30px}
  .milestone-era{margin-top:12px;font-size:.8125rem}
  .milestone-copy h2{font-size:clamp(1.65rem,5.5vw,2rem)}
  .milestone-copy>p:not(.milestone-label){font-size:1rem}
  .world-track{margin-top:36px;padding-top:24px;border-top:1px solid var(--chapter-spine)}
  .history-photo{margin-bottom:22px}
  .history-photo img{max-height:none}
  .world-event{padding-top:20px}
  .world-event h3{font-size:1.375rem}
  .world-event>p:not(.world-date){font-size:1rem}
  .world-date{font-size:.8125rem}
  .chapter-foundation{min-height:0}
  .company-only .company-track{display:block}
  .company-only .company-track-name{display:none}
  .company-only .milestone-date{margin-bottom:30px}
  .timeline-note{font-size:.75rem;padding-block:20px}
  .history-company{display:block;padding:65px 0}
  .history-company-heading{margin-bottom:30px}
  .history-company-details>div{gap:16px;grid-template-columns:5em minmax(0,1fr)}
}
@media(max-width:420px){
  .history-intro{display:block}
  .history-range{font-size:min(6.15vw,1.5rem)}
  .history-intro>p:last-child{margin-top:17px}
  .history-intro>p:last-child br{display:none}
  .history-breadcrumb{font-size:.75rem;padding-top:18px}
}
@media(max-width:360px){.milestone-copy h2{font-size:1.5rem}.milestone-copy h2,.world-event h3{text-wrap:balance}.history-company-details>div{grid-template-columns:1fr;gap:5px}}
@media(prefers-reduced-motion:reduce){.history-year-nav a::after{transition:none}}
/* Every photograph stays on the side of the history it belongs to. */
.chapter-opening{--chapter-spine:#879ba8;--chapter-marker:#ff966e;--chapter-ink:#fff;--chapter-muted:#e2e7e9;background:#122331;border:0}
.chapter-opening .milestone-label{color:#ffc19d}
.chapter-opening .world-event{border-top-color:#8b9ba5}
.chapter-opening .world-source{color:#e2e7e9;text-decoration-color:#b3bdc4}
.chapter-space .history-photo{max-width:550px}
/* Native scroll stays in control; each chapter enters once as it becomes visible. */
.history-motion .history-milestone .company-track,.history-motion .history-milestone .world-event,.history-motion .history-milestone:not(.chapter-opening) .history-photo{transition:opacity .75s ease,transform .75s cubic-bezier(.2,.6,.2,1)}
.history-motion .history-milestone.is-awaiting .company-track,.history-motion .history-milestone.is-awaiting .world-event,.history-motion .history-milestone.is-awaiting:not(.chapter-opening) .history-photo{opacity:0;transform:translateY(26px)}
.history-motion .history-milestone .world-event{transition-delay:.1s}
@media(prefers-reduced-motion:reduce){
  .history-motion .history-milestone .company-track,.history-motion .history-milestone .world-event,.history-motion .history-milestone:not(.chapter-opening) .history-photo{transition:none!important;opacity:1!important;transform:none!important}
}

/* Product exhibits stay in the company column at every screen size. */
.company-exhibit{min-width:0;margin:32px 0 0}
.company-exhibit>img{width:100%;height:auto;max-height:none;aspect-ratio:3/2;object-fit:contain;background:#101820}
.company-exhibit figcaption{display:flex;align-items:baseline;gap:8px 14px;flex-wrap:wrap;padding-top:16px;color:#52605a}
.company-exhibit figcaption strong{font:500 1.125rem/1.7 var(--serif);letter-spacing:.06em;color:var(--ink)}
.company-exhibit figcaption>span{font-size:.875rem}
.company-exhibit figcaption small{display:block;flex-basis:100%;font-size:.75rem;line-height:1.8}
.company-only .company-exhibit{grid-column:2}
.yanoman-exhibit>img{aspect-ratio:1;background:#fff}
@media(max-width:760px){.company-exhibit{margin-top:30px}}