/* atbase — style.css */
/* Layout: "Borehole log" — the page reads downward from the ground line (GL ±0) through numbered layers. 12-column frame; survey guides on columns 1/4/7/10/12. */
:root{
  --ink:#0A1626;
  --paper:#F3F5F7;
  --white:#FFFFFF;
  --text:#121C28;
  --muted:#566273;
  --line:#D8DEE5;
  --fill:#C9D1DA;
  --on-dark:#EEF2F6;
  --on-dark-muted:#98A6B7;
  --line-dark:rgba(238,242,246,.16);
  --accent:#1A5FB4;
  --signal:#86B6FF;

  --f-mincho:"Shippori Mincho B1","Hiragino Mincho ProN","Yu Mincho","YuMincho",serif;
  --f-sans:"Zen Kaku Gothic New","Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",sans-serif;
  --f-en:"Instrument Sans","Helvetica Neue",Arial,sans-serif;
  --f-mono:"DM Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;

  --gutter:clamp(20px,4vw,56px);
  --max:1360px;
  --col-gap:24px;
  --header-h:76px;
  --s-xl:clamp(112px,11vw,160px);
  --s-l:clamp(64px,6.6vw,96px);
  --s-m:48px;
  --s-s:24px;
  --ease:cubic-bezier(.19,1,.22,1);
  --ease-io:cubic-bezier(.65,0,.35,1);
  color-scheme:light;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
.lenis.lenis-stopped{overflow:hidden}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:var(--f-sans);font-size:16px;line-height:1.9;letter-spacing:.04em;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  word-break:keep-all;overflow-wrap:anywhere;line-break:strict;overflow-x:clip;
}
p,li,dd,blockquote{text-wrap:pretty}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
p,h1,h2,h3,blockquote,figure{margin:0}
h1,h2,h3{font-weight:inherit}
ul{list-style:none;margin:0;padding:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:2px}
.on-dark :focus-visible{outline-color:var(--signal)}
::selection{background:var(--accent);color:var(--white)}

.wrap{width:100%;max-width:calc(var(--max) + var(--gutter) * 2);margin-inline:auto;padding-inline:var(--gutter)}
.g12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--col-gap)}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.nb{display:inline-block}
.skip{position:fixed;left:16px;top:-80px;z-index:100;background:var(--ink);color:var(--white);padding:10px 16px;font-size:14px;transition:top .3s var(--ease)}
.skip:focus{top:calc(env(safe-area-inset-top,0px) + 12px)}

/* survey guides — on the same 12-column grid as the content */
.guide{position:absolute;top:0;bottom:0;left:50%;transform:translateX(-50%);width:min(var(--max),calc(100% - var(--gutter) * 2));display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--col-gap);pointer-events:none;z-index:0}
.guide i{grid-row:1;width:1px;background:var(--line);opacity:.62;justify-self:start}
.guide i:nth-child(1){grid-column:1}
.guide i:nth-child(2){grid-column:4}
.guide i:nth-child(3){grid-column:7}
.guide i:nth-child(4){grid-column:10}
.guide i:nth-child(5){grid-column:12;justify-self:end}

/* layer header: GL −0X / name, a rule that draws itself */
.sh{grid-column:1/-1;position:relative;display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--col-gap);align-items:center;padding-top:16px;margin-bottom:var(--s-l);font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);line-height:1}
.sh::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--text);transform-origin:left;transition:transform 1.6s var(--ease)}
.sh::after{content:"";position:absolute;left:0;top:-4px;width:1px;height:9px;background:var(--accent)}
.sh__gl{grid-column:1/span 3;color:var(--accent);font-weight:500}
.sh__en{grid-column:4/span 6}
.sh__ja{grid-column:10/-1;justify-self:end;font-variant-numeric:tabular-nums}
.on-dark .sh{color:var(--on-dark-muted)}
.on-dark .sh::before{background:var(--line-dark)}
.on-dark .sh::after{background:var(--signal)}
.on-dark .sh__gl{color:var(--signal)}
.js .sh.is-pre{opacity:1;transform:none}
.js .sh.is-pre::before{transform:scaleX(0)}
.js .sh>span{transition:opacity 1s var(--ease) .35s}
.js .sh.is-pre>span{opacity:0}

.h2{font-family:var(--f-mincho);font-weight:600;font-size:clamp(34px,3.9vw,56px);line-height:1.3;letter-spacing:.06em;font-feature-settings:"palt" 1}

/* text links */
.ln-arrow{display:inline-flex;align-items:center;gap:14px;font-size:15px;font-weight:500;letter-spacing:.08em;padding-block:6px}
.ln-arrow__t{background:linear-gradient(currentColor,currentColor) 0 100%/100% 1px no-repeat;padding-bottom:5px;transition:background-size .7s var(--ease)}
.ln-arrow:hover .ln-arrow__t{background-size:0 1px;background-position:100% 100%}
.ln-arrow svg{width:14px;height:14px;flex:none;transition:transform .6s var(--ease)}
.ln-arrow:hover svg{transform:translateX(4px)}
.circle{width:44px;height:44px;border:1px solid currentColor;border-radius:50%;display:grid;place-items:center;flex:none;transition:background-color .5s var(--ease),color .5s var(--ease),border-color .5s var(--ease)}
.circle svg{width:14px;height:14px;transition:transform .6s var(--ease)}

/* buttons */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:space-between;gap:20px;height:56px;padding:0 24px 0 28px;border-radius:2px;font-size:14px;font-weight:500;letter-spacing:.1em;overflow:hidden;isolation:isolate}
.btn::before{content:"";position:absolute;inset:0;z-index:-1;transform:scaleX(0);transform-origin:right;transition:transform .7s var(--ease)}
.btn:hover::before{transform:scaleX(1);transform-origin:left}
.btn svg{width:16px;height:16px;transition:transform .6s var(--ease)}
.btn:hover svg{transform:translateX(4px)}

/* reveal */
.js [data-r]{transition:opacity 1.2s var(--ease),transform 1.2s var(--ease)}
.js [data-r].is-pre{opacity:0;transform:translateY(28px)}
[data-d="1"]{transition-delay:.08s!important}
[data-d="2"]{transition-delay:.16s!important}
[data-d="3"]{transition-delay:.24s!important}
.ln{display:block;overflow:hidden;padding-bottom:.08em;margin-bottom:-.08em}

/* ---------- header ---------- */
.hdr{position:fixed;top:0;left:0;right:0;z-index:50;padding-top:env(safe-area-inset-top,0px);color:var(--hdr-fg,var(--on-dark));transition:transform .7s var(--ease),color .35s ease}
.hdr::before{content:"";position:absolute;inset:0;background:rgba(243,245,247,.86);-webkit-backdrop-filter:saturate(1.4) blur(16px);backdrop-filter:saturate(1.4) blur(16px);opacity:0;transition:opacity .5s ease;box-shadow:inset 0 -1px 0 var(--line)}
.hdr.is-solid::before{opacity:1}
.hdr.is-hidden{transform:translateY(-100%)}
.hdr__in{position:relative;height:var(--header-h);display:flex;align-items:center;gap:clamp(16px,3vw,40px)}
.logo{display:inline-flex;align-items:center;gap:10px;margin-right:auto}
.logo svg{width:22px;height:22px}
.logo__word{font-family:var(--f-en);font-weight:600;font-size:22px;letter-spacing:-.03em;line-height:1}
.gnav ul{display:flex;gap:36px}
.gnav a{position:relative;display:block;font-size:14px;font-weight:500;letter-spacing:.1em;padding-block:8px}
.gnav a::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:right;transition:transform .6s var(--ease)}
.gnav a:hover::after{transform:scaleX(1);transform-origin:left}
.btn--hdr{height:44px;padding:0 18px 0 20px;gap:14px;font-size:13px;background:var(--hdr-fg,var(--on-dark));color:var(--hdr-inv,var(--ink));transition:color .35s ease,background-color .35s ease}
.btn--hdr::before{background:var(--accent)}
.btn--hdr:hover{color:var(--white)}
.btn--hdr svg{width:14px;height:14px}
.hdr__gl{display:none;align-items:center;gap:8px;font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;opacity:.8;font-variant-numeric:tabular-nums}
.hdr__gl::before{content:"";width:12px;height:1px;background:currentColor}
.menu-btn{display:none;align-items:center;gap:12px;height:44px;padding:0 0 0 12px;background:none;border:0;color:inherit;font:500 12px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;cursor:pointer}
.menu-btn__lines{position:relative;width:24px;height:10px}
.menu-btn__lines::before,.menu-btn__lines::after{content:"";position:absolute;left:0;right:0;height:1.5px;background:currentColor;transition:transform .6s var(--ease),top .6s var(--ease)}
.menu-btn__lines::before{top:0}
.menu-btn__lines::after{top:8.5px}
.menu-open .menu-btn__lines::before{top:4.25px;transform:rotate(45deg) scaleX(.78)}
.menu-open .menu-btn__lines::after{top:4.25px;transform:rotate(-45deg) scaleX(.78)}

.menu{position:fixed;inset:0;z-index:45;background:var(--ink);color:var(--on-dark);padding:calc(var(--header-h) + env(safe-area-inset-top,0px) + 24px) 0 calc(28px + env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;visibility:hidden;clip-path:inset(0 0 100% 0);transition:clip-path .8s var(--ease-io),visibility 0s linear .8s;overflow-y:auto}
.menu.is-open{visibility:visible;clip-path:inset(0 0 0 0);transition:clip-path .8s var(--ease-io),visibility 0s}
.menu__list{display:flex;flex-direction:column;border-top:1px solid var(--line-dark)}
.menu__list a{display:flex;align-items:baseline;justify-content:space-between;padding:20px 0;border-bottom:1px solid var(--line-dark);font-family:var(--f-mincho);font-weight:600;font-size:25px;letter-spacing:.06em;opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .8s var(--ease)}
.menu__list a span{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--on-dark-muted)}
.menu.is-open .menu__list a{opacity:1;transform:none}
.menu.is-open .menu__list li:nth-child(2) a{transition-delay:.05s}
.menu.is-open .menu__list li:nth-child(3) a{transition-delay:.1s}
.menu.is-open .menu__list li:nth-child(4) a{transition-delay:.15s}
.menu__foot{margin-top:auto;padding-top:36px;display:grid;gap:14px;font-size:13px;line-height:1.8;color:var(--on-dark-muted)}
.menu__tel{font-family:var(--f-en);font-weight:500;font-size:26px;color:var(--on-dark);letter-spacing:.01em;font-variant-numeric:tabular-nums;line-height:1.2}
.menu__foot .btn{width:100%;margin-top:10px;background:var(--on-dark);color:var(--ink)}
.menu__foot .btn::before{background:var(--signal)}

/* depth gauge: where you are in the log */
.gauge{position:fixed;right:calc(max(var(--gutter),(100vw - var(--max)) / 2) / 2 - 4px);top:50%;z-index:40;height:min(44vh,360px);transform:translateY(-50%);width:8px;pointer-events:none;color:#fff;mix-blend-mode:difference;opacity:0;transition:opacity .6s ease}
.gauge.is-on{opacity:.85}
.gauge__bar{position:absolute;right:0;top:0;bottom:0;width:7px;background:repeating-linear-gradient(to bottom,currentColor 0 1px,transparent 1px 8px);opacity:.4}
.gauge__bar::after{content:"";position:absolute;right:0;top:0;bottom:0;width:1px;background:currentColor}
.gauge__mark{position:absolute;right:0;width:15px;height:1px;background:currentColor;top:var(--gp,0%)}
.gauge__label{position:absolute;right:13px;top:calc(var(--gp,0%) + 10px);writing-mode:vertical-rl;font-family:var(--f-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;white-space:nowrap;line-height:1}

/* ---------- hero ---------- */
.hero{position:relative;height:150vh;height:150svh;background:var(--ink)}
.hero__pin{position:sticky;top:0;height:100vh;height:100svh;min-height:600px;overflow:hidden;--edge:100%;--meta-o:1}
.hero__canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.hero__layer{position:absolute;inset:0;z-index:2}
.hero__layer--light{color:var(--on-dark);--hm:var(--on-dark-muted);clip-path:inset(0 0 calc(100% - var(--edge)) 0)}
.hero__layer--dark{color:var(--text);--hm:var(--muted);clip-path:inset(var(--edge) 0 0 0)}
.hero__content{position:relative;height:100%;align-content:start;padding-top:calc(var(--header-h) + env(safe-area-inset-top,0px) + clamp(40px,9.5vh,116px))}
.hero__eyebrow{grid-column:1/-1;grid-row:1;display:flex;align-items:center;gap:16px;margin-bottom:clamp(24px,3.4vh,40px);font-family:var(--f-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--hm)}
.hero__eyebrow i{width:40px;height:1px;background:currentColor;opacity:.7}
.hero__title{grid-column:1/span 9;grid-row:2;font-family:var(--f-mincho);font-weight:600;font-size:clamp(44px,7.1vw,116px);line-height:1.2;letter-spacing:.02em;font-feature-settings:"palt" 1;white-space:nowrap}
.hero__lead{grid-column:10/span 3;grid-row:2;align-self:end;display:grid;gap:16px;padding-bottom:.55em}
.hero__en{font-family:var(--f-en);font-weight:500;font-size:clamp(18px,1.5vw,22px);line-height:1.35;letter-spacing:-.01em;text-wrap:balance}
.hero__ja{font-size:14px;line-height:2;color:var(--hm)}
.hero__meta{position:absolute;left:0;right:0;bottom:calc(28px + env(safe-area-inset-bottom,0px));display:flex;justify-content:space-between;align-items:center;font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--hm);opacity:var(--meta-o)}
.hero__scroll{display:inline-flex;align-items:center;gap:14px}
.hero__scroll i{position:relative;width:56px;height:1px;overflow:hidden}
.hero__scroll i::before{content:"";position:absolute;inset:0;background:currentColor;opacity:.4}
.hero__scroll i::after{content:"";position:absolute;inset:0;background:currentColor;transform:translateX(-100%);animation:scrollcue 2.4s var(--ease-io) infinite}
@keyframes scrollcue{0%{transform:translateX(-100%)}55%{transform:translateX(0)}100%{transform:translateX(100%)}}
.js .hero__title .ln>span{display:inline-block;animation:rise 1.6s var(--ease) both .55s}
.js .hero__title .ln:nth-child(2)>span{animation-delay:.68s}
.js .hero__eyebrow,.js .hero__lead,.js .hero__meta>span{animation:fadein 1.4s var(--ease) both 1.05s}
@keyframes rise{from{transform:translateY(112%)}}
@keyframes fadein{from{opacity:0;transform:translateY(12px)}}

/* ---------- sections (one light surface) ---------- */
.sec{position:relative;background:var(--paper);padding-block:0 clamp(104px,10vw,144px)}
.sec>.wrap{position:relative;z-index:1}

.about{margin-top:-30vh;margin-top:-30svh;padding-top:0;background:transparent;z-index:3}
/* about */
.about__statement{grid-column:4/-1;font-family:var(--f-mincho);font-weight:600;font-size:clamp(36px,5.4vw,88px);line-height:1.38;letter-spacing:.02em;font-feature-settings:"palt" 1}
.fill-ready .ch{color:var(--fill);transition:color .6s ease}
.fill-ready .ch.on{color:var(--text)}
.about__body{grid-column:7/span 3;margin-top:var(--s-l);display:grid;gap:28px;justify-items:start}
.about__body p{font-size:15px;line-height:2.1}
.values{grid-column:1/-1;margin-top:var(--s-xl)}
.values__label{font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:var(--s-s)}
.values__label span{font-family:var(--f-sans);letter-spacing:.12em;text-transform:none;font-size:12px;margin-left:14px}
.values__list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));column-gap:var(--col-gap)}
.values__list li{border-top:1px solid var(--text);padding-top:22px;padding-right:20px}
.values__list h3{font-family:var(--f-mincho);font-weight:600;font-size:22px;letter-spacing:.06em;line-height:1.5;margin-bottom:10px}
.values__list p{font-size:13px;line-height:1.95;color:var(--muted)}

/* business */
.biz__head{align-items:end;margin-bottom:var(--s-l)}
.biz__head .h2{grid-column:1/span 6}
.biz__lead{grid-column:10/span 3;font-size:15px;line-height:2.05;color:var(--muted)}
.biz__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--col-gap)}
.card{position:relative;display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);transition:border-color .6s var(--ease)}
.card:hover{border-color:var(--text)}
.card__visual{position:relative;aspect-ratio:16/10;background:var(--white);border-bottom:1px solid var(--text);overflow:hidden;transition:background-color .8s var(--ease),border-color .8s var(--ease)}
.card:hover .card__visual{background:var(--ink);border-bottom-color:var(--signal)}
.card__visual canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.card__meta,.card__gl{position:absolute;z-index:1;font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);line-height:1.5;transition:color .8s var(--ease)}
.card__meta{left:clamp(18px,2vw,28px);top:clamp(16px,1.8vw,24px);display:grid}
.card__meta b{font-weight:500;color:var(--text);transition:color .8s var(--ease)}
.card__gl{right:clamp(18px,2vw,28px);bottom:10px;font-size:10px}
.card:hover .card__meta{color:var(--on-dark-muted)}
.card:hover .card__meta b{color:var(--on-dark)}
.card:hover .card__gl{color:var(--signal)}
.card__body{display:flex;flex-direction:column;gap:14px;padding:clamp(24px,2.6vw,40px);flex:1}
.card__tag{font-family:var(--f-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.card__title{font-family:var(--f-mincho);font-weight:600;font-size:clamp(24px,2.3vw,34px);line-height:1.45;letter-spacing:.04em;font-feature-settings:"palt" 1}
.card__desc{font-size:15px;line-height:2;color:var(--muted);max-width:30em;margin-bottom:28px}
.card__cta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;font-weight:500;letter-spacing:.06em}
.card:hover .card__cta .circle{background:var(--text);border-color:var(--text);color:var(--white)}
.card--ai:hover .card__cta .circle svg{transform:translate(2px,-2px)}
.card--ec:hover .card__cta .circle svg{transform:translateX(3px)}
.card__link{position:absolute;inset:0;z-index:3}
.card__link:focus-visible{outline-offset:-2px}

/* company */
.co__grid{row-gap:var(--s-m);align-items:start}
.co__left{grid-column:1/span 3;display:grid;gap:var(--s-m);align-content:start}
.msg{display:grid;gap:22px;padding-top:4px}
.msg blockquote{font-family:var(--f-mincho);font-weight:500;font-size:18px;line-height:2;letter-spacing:.06em}
.msg figcaption{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted);letter-spacing:.1em}
.msg figcaption::before{content:"";width:24px;height:1px;background:currentColor}
.msg figcaption b{font-family:var(--f-mincho);font-weight:600;font-size:17px;color:var(--text);letter-spacing:.14em}
.facts{grid-column:7/-1;margin:0;border-top:1px solid var(--text)}
.facts div{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));column-gap:var(--col-gap);padding:20px 0;border-bottom:1px solid var(--line)}
.facts dt{grid-column:1/span 3;font-size:13px;letter-spacing:.12em;color:var(--muted);padding-top:2px}
.facts dd{grid-column:4/-1;margin:0;font-size:16px;line-height:1.85}
.facts dd small{display:block;margin-top:2px;font-size:12px;letter-spacing:.08em;color:var(--muted)}
.facts .tel{font-family:var(--f-en);font-weight:500;font-size:20px;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.tiles{margin-top:var(--s-l);display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--col-gap)}
.tile{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:6px 16px;padding:22px 0 26px;border-top:1px solid var(--line)}
.tile::before{content:"";position:absolute;left:0;right:0;top:-1px;height:1px;background:var(--text);transform:scaleX(0);transform-origin:right;transition:transform .9s var(--ease)}
.tile:hover::before{transform:scaleX(1);transform-origin:left}
.tile__en{grid-column:1/-1;font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.tile__ja{font-size:18px;font-weight:500;letter-spacing:.08em;line-height:1.5}
.tile svg{width:16px;height:16px;transition:transform .6s var(--ease)}
.tile:hover svg{transform:translateX(5px)}

/* recruit */
.recruit>.wrap .sh{margin-bottom:0}
.recruit__link{position:relative;display:block;overflow:hidden;isolation:isolate;border-bottom:1px solid var(--line);z-index:1}
.recruit__link::before{content:"";position:absolute;inset:0;z-index:-1;background:var(--ink);transform:scaleY(0);transform-origin:bottom;transition:transform .9s var(--ease)}
.recruit__link:hover::before{transform:scaleY(1)}
.recruit__in{align-items:center;padding-block:var(--s-l);transition:color .6s var(--ease)}
.recruit__link:hover .recruit__in{color:var(--on-dark)}
.recruit__copy{grid-column:1/span 9;font-family:var(--f-mincho);font-weight:600;font-size:clamp(28px,3.9vw,56px);letter-spacing:.04em;line-height:1.35;font-feature-settings:"palt" 1}
.recruit__note{grid-column:1/span 9;margin-top:16px;font-size:14px;letter-spacing:.1em;color:var(--muted);transition:color .6s var(--ease)}
.recruit__link:hover .recruit__note{color:var(--on-dark-muted)}
.recruit__go{grid-column:10/-1;grid-row:1/3;justify-self:end;display:flex;align-items:center;gap:20px;font-size:14px;font-weight:500;letter-spacing:.1em}
.recruit__go .circle{width:64px;height:64px}
.recruit__go .circle svg{width:18px;height:18px}
.recruit__link:hover .recruit__go .circle{background:var(--signal);border-color:var(--signal);color:var(--ink)}
.recruit__link:hover .recruit__go .circle svg{transform:translateX(4px)}

/* news */
.news__row{align-items:start;row-gap:28px}
.news__row .h2{grid-column:1/span 3}
.news__list{grid-column:4/span 7}
.news__item{display:grid;grid-template-columns:auto auto minmax(0,1fr) auto;align-items:center;gap:28px;padding:24px 28px;background:var(--white);border:1px solid var(--line);transition:border-color .5s var(--ease)}
.news__item:hover{border-color:var(--text)}
.news__item time{font-family:var(--f-mono);font-size:13px;letter-spacing:.06em;color:var(--muted);font-variant-numeric:tabular-nums}
.chip{display:inline-block;border:1px solid var(--line);background:var(--white);padding:3px 12px;font-size:12px;letter-spacing:.1em;line-height:1.6;color:var(--muted);border-radius:2px}
.news__t{font-size:16px;font-weight:500}
.news__t span{background:linear-gradient(currentColor,currentColor) 0 100%/0 1px no-repeat;transition:background-size .6s var(--ease);padding-bottom:2px}
.news__item:hover .news__t span{background-size:100% 1px}
.news__item svg{width:16px;height:16px;transition:transform .6s var(--ease)}
.news__item:hover svg{transform:translateX(4px)}
.news__more{grid-column:11/span 2;justify-self:end;margin-top:14px}

/* contact */
.contact{position:relative;background:var(--ink);color:var(--on-dark);padding-block:clamp(64px,6vw,88px) var(--s-l)}
.contact__big{position:relative;display:grid;grid-template-columns:auto 1fr;align-items:end;column-gap:clamp(20px,2.4vw,40px);padding-bottom:var(--s-m);border-bottom:1px solid var(--line-dark)}
.contact__word{position:relative;display:block;overflow:hidden;font-family:var(--f-en);font-weight:500;font-size:clamp(76px,15vw,236px);line-height:.92;letter-spacing:-.05em;margin-left:-.05em;padding-bottom:.04em}
.contact__word span{display:block;transition:transform 1s var(--ease)}
.contact__word span+span{position:absolute;left:0;top:100%;color:var(--signal)}
.contact__big:hover .contact__word span{transform:translateY(-100%)}
.contact__arrow{width:clamp(48px,6.4vw,104px);height:auto;margin-bottom:1.2vw;transition:transform 1s var(--ease),color .6s var(--ease)}
.contact__big:hover .contact__arrow{transform:translateX(18px);color:var(--signal)}
.contact__cue{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:22px;font-size:14px;letter-spacing:.12em;color:var(--on-dark-muted)}
.contact__cue b{font-weight:500;color:var(--on-dark)}
.contact__row{margin-top:var(--s-m);align-items:start;row-gap:36px}
.contact__lead{grid-column:1/span 5;font-size:15px;line-height:2.1;color:var(--on-dark-muted);max-width:30em}
.contact__tel{grid-column:7/span 3;display:grid;gap:8px;margin:0}
.contact__mail{grid-column:10/span 3}
.contact__addr{font-family:var(--f-en);font-weight:500;font-size:clamp(18px,1.6vw,22px);letter-spacing:.01em;line-height:1.5}
.contact__addr a{background:linear-gradient(currentColor,currentColor) 0 100%/100% 1px no-repeat;padding-bottom:3px;transition:color .4s ease}
.contact__addr a:hover{color:var(--signal)}
.contact__tel dt{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--on-dark-muted);line-height:1}
.contact__tel dd{margin:0}
.contact__num{font-family:var(--f-en);font-weight:500;font-size:clamp(28px,2.6vw,38px);letter-spacing:.01em;line-height:1.15;font-variant-numeric:tabular-nums;user-select:all}
.contact__hours{font-size:13px;color:var(--on-dark-muted);letter-spacing:.08em}
.contact__btn{display:none;background:var(--on-dark);color:var(--ink)}
.contact__btn::before{background:var(--signal)}

/* footer */
.ftr{position:relative;background:var(--ink);color:var(--on-dark-muted);font-size:13px;line-height:1.9;overflow:hidden}
.ftr__top{padding-top:clamp(40px,4vw,56px);row-gap:48px}
.ftr__brand{grid-column:1/span 4;display:grid;gap:22px;align-content:start}
.ftr__brand .logo{color:var(--on-dark)}
.ftr__brand address{font-style:normal}
.ftr__brand .t{font-family:var(--f-en);font-size:15px;color:var(--on-dark);letter-spacing:.04em}
.ftr__nav{grid-column:7/-1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));column-gap:var(--col-gap);row-gap:36px}
.ftr__nav h3{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--on-dark-muted);margin-bottom:14px;font-weight:400}
.ftr__nav ul{display:grid;gap:8px}
.ftr__nav a{color:var(--on-dark);transition:color .4s ease}
.ftr__nav a:hover{color:var(--signal)}
.ftr__bottom{display:flex;flex-wrap:wrap;align-items:center;gap:12px 32px;margin-top:var(--s-l);padding-block:24px;border-top:1px solid var(--line-dark)}
.ftr__policy{display:flex;flex-wrap:wrap;gap:8px 28px;margin-right:auto}
.ftr__policy a:hover{color:var(--on-dark)}
.ftr__copy{font-size:12px;letter-spacing:.1em}
.totop{display:inline-flex;align-items:center;gap:10px;background:none;border:0;color:var(--on-dark);font:400 11px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;cursor:pointer;padding:8px 0}
.totop svg{width:14px;height:14px;transition:transform .6s var(--ease)}
.totop:hover svg{transform:translateY(-3px)}
.ftr__word{position:relative;padding-inline:var(--gutter);margin-top:clamp(24px,3vw,40px);user-select:none;line-height:0}
.ftr__word span{display:inline-block;font-family:var(--f-en);font-weight:600;font-size:30vw;line-height:.73;letter-spacing:-.05em;color:#16293F;margin-left:-.05em;white-space:nowrap}
.ftr__gl{position:relative;display:flex;justify-content:space-between;align-items:center;height:44px;margin-inline:var(--gutter);border-top:1px solid rgba(134,182,255,.55);font-family:var(--f-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--on-dark-muted)}

/* ---------- responsive ---------- */
@media (max-width:1180px){ .gauge{display:none} .hdr__gl{display:inline-flex} }
@media (max-width:1080px){
  .gnav,.btn--hdr{display:none}
  .menu-btn{display:inline-flex}
  .hero__title{grid-column:1/-1}
  .hero__lead{grid-column:7/-1;grid-row:3;align-self:start;margin-top:36px;padding-bottom:0}
  .guide i:nth-child(2),.guide i:nth-child(4){display:none}
  .about__statement{grid-column:1/-1}
  .about__body{grid-column:7/-1}
  .values__list{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:32px}
  .biz__head .h2{grid-column:1/-1}
  .biz__lead{grid-column:7/-1;margin-top:24px}
  .co__left{grid-column:1/span 6}
  .facts{grid-column:7/-1}
  .facts div{grid-template-columns:1fr}
  .facts dt,.facts dd{grid-column:1/-1}
  .tiles{grid-template-columns:repeat(2,minmax(0,1fr))}
  .recruit__copy,.recruit__note{grid-column:1/span 9}
  .recruit__go{grid-column:10/-1}
  .recruit__go>span:first-child{display:none}
  .news__row .h2,.news__list{grid-column:1/-1}
  .news__more{grid-column:1/-1;justify-self:start;margin-top:0}
  .contact__lead{grid-column:1/-1}
  .contact__tel{grid-column:1/span 6}
  .contact__mail{grid-column:7/-1}
  .ftr__brand,.ftr__nav{grid-column:1/-1}
}
@media (max-width:720px){
  :root{--header-h:64px;--col-gap:16px;--s-xl:96px;--s-l:56px;--s-m:40px}
  .sec{padding-bottom:88px}
  .guide i:nth-child(3){display:none}
  .guide i{opacity:.5}
  .co__left,.facts{grid-column:1/-1}
  .sh__gl{grid-column:1/span 3}
  .sh__en{grid-column:4/span 5}
  .sh__ja{grid-column:9/-1}
  .hero{height:135vh;height:135svh}
  .about{margin-top:-24vh;margin-top:-24svh}
  .hero__title{font-size:11.6vw}
  .hero__lead{grid-column:1/-1;margin-top:28px}
  .hero__meta .hero__coord{display:none}
  .about__body{grid-column:1/-1}
  .values__list{grid-template-columns:1fr;row-gap:0}
  .values__list li{padding:18px 0;border-top-color:var(--line);display:grid;grid-template-columns:7.5em minmax(0,1fr);gap:12px;align-items:baseline}
  .values__list li:first-child{border-top-color:var(--text)}
  .values__list h3{font-size:18px;margin:0}
  .biz__lead{grid-column:1/-1}
  .biz__grid{grid-template-columns:1fr;gap:40px}
  .facts div{padding:18px 0}
  .facts dt{grid-column:1/-1}
  .facts dd{grid-column:1/-1;margin-top:4px}
  .msg blockquote{font-size:17px}
  .tiles{grid-template-columns:1fr;gap:0}
  .tile{padding:18px 0 20px}
  .recruit__copy{grid-column:1/-1;font-size:27px}
  .recruit__note{grid-column:1/-1}
  .recruit__go{grid-column:1/-1;grid-row:auto;justify-self:stretch;justify-content:space-between;margin-top:32px;padding-top:20px;border-top:1px solid currentColor}
  .recruit__go>span:first-child{display:inline}
  .recruit__go .circle{width:48px;height:48px}
  .news__item{grid-template-columns:auto minmax(0,1fr) auto;gap:10px 16px;padding:20px}
  .news__item time{grid-column:1}
  .news__item .chip{grid-column:2;justify-self:start}
  .news__t{grid-column:1/3;grid-row:2}
  .news__item svg{grid-column:3;grid-row:1/3}
  .contact__word{font-size:21vw}
  .contact__arrow{width:13vw}
  .contact__cue{flex-direction:column;align-items:flex-start;gap:4px}
  .contact__lead,.contact__tel,.contact__mail{grid-column:1/-1}
  .contact__btn{display:inline-flex;grid-column:1/-1;width:100%}
  .ftr__nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ftr__bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}