/* site.css — Webmap 共通スタイル（トップ／モデル紹介ページ）
   tmp 暫定版の index.html インラインCSSから抽出。japan/global で同一。 */
:root{
  --bg:#070808;
  --bg2:#0d1010;
  --panel:#111515;
  --panel2:#171c1b;
  --paper:#f4f7f5;
  --ink:#101414;
  --ink2:#3c4643;
  --white:#fff;
  --text:#e7ece9;
  --muted:#b7c1bd;
  --line:rgba(255,255,255,.14);
  --line-strong:rgba(255,255,255,.24);
  --green:#5be52b;
  --cyan:#54c6d8;
  --amber:#d9b765;
  --maxw:1160px;
  --sans:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  --latin:Inter,Arial,Helvetica,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{
  font-family:var(--sans);
  color:var(--text);
  background:var(--bg);
  line-height:1.85;
  font-feature-settings:"palt" 1;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:-1;
  background:
    linear-gradient(180deg,rgba(7,8,8,.20),var(--bg) 86%),
    repeating-linear-gradient(90deg,rgba(255,255,255,.025) 0 1px,transparent 1px 120px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.018) 0 1px,transparent 1px 120px);
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.latin{font-family:var(--latin);letter-spacing:.02em}

header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:50;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:16px clamp(18px,4vw,54px);
  background:rgba(7,8,8,.72);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand{
  display:inline-flex;
  align-items:center;
  min-width:0;
  color:var(--white);
  font-family:var(--sans);
  font-size:clamp(24px,2.6vw,34px);
  font-weight:800;
  line-height:1.18;
  white-space:nowrap;
  letter-spacing:.01em;
  text-shadow:0 0 18px rgba(91,229,43,.28);
}
.brand:hover{color:var(--green)}
.brand:focus-visible{outline:2px solid var(--cyan);outline-offset:5px}
nav{display:flex;align-items:center;gap:clamp(10px,2vw,24px)}
nav a{
  font-family:var(--latin);
  font-size:13px;
  color:rgba(255,255,255,.74);
  font-weight:700;
  letter-spacing:.04em;
}
nav a:hover{color:var(--white)}
nav a:focus-visible{outline:2px solid var(--cyan);outline-offset:5px}
.lang-switch{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 10px;
  border:1px solid var(--line);
  border-radius:999px;
  color:rgba(255,255,255,.46);
}
.lang-switch a{
  font-family:var(--latin);
  font-size:12px;
  font-weight:850;
  letter-spacing:.08em;
  color:rgba(255,255,255,.66);
}
.lang-switch a:hover{color:var(--green)}
.lang-switch a:focus-visible{color:var(--green);outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
.lang-switch a[aria-current="page"]{color:var(--white)}
.nav-cta{
  border:1px solid var(--line-strong);
  padding:8px 18px;
  border-radius:999px;
  color:var(--white);
}
.nav-cta:hover{border-color:var(--green);color:var(--green)}
.nav-cta--global:hover{border-color:var(--cyan);color:var(--cyan)}
@media(max-width:820px){
  nav > a:not(.nav-cta){display:none}
  header{padding:14px 18px}
  nav{gap:8px;justify-content:flex-end;flex-wrap:wrap}
  .brand{font-size:20px;white-space:normal}
  .lang-switch{padding:5px 8px}
  .nav-cta{padding:8px 14px}
}

.hero{
  position:relative;
  min-height:calc(100svh - 10px);
  display:grid;
  align-items:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:url("/assets/noise.png") repeat;
  background-size:220px;
  opacity:.045;
  mix-blend-mode:screen;
  pointer-events:none;
}
#modelCanvas{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  opacity:.9;
}
.hero-inner{
  position:relative;
  z-index:2;
  width:min(960px,100%);
  margin:0 auto;
  padding:118px clamp(20px,5vw,56px) 72px;
}
.eyebrow{
  display:flex;
  align-items:center;
  gap:13px;
  font-family:var(--latin);
  font-size:12px;
  font-weight:800;
  letter-spacing:.34em;
  color:var(--green);
  text-transform:uppercase;
  margin-bottom:24px;
}
.eyebrow::before{content:"";width:42px;height:1px;background:var(--green)}
h1{
  font-size:clamp(2.25rem,6vw,4.7rem);
  line-height:1.18;
  letter-spacing:.01em;
  font-weight:800;
  color:var(--white);
  text-wrap:balance;
}
h1 .accent{color:var(--green)}
.nowrap{white-space:nowrap}
.lead{
  margin-top:28px;
  max-width:690px;
  color:var(--muted);
  font-size:clamp(15px,1.7vw,17px);
  line-height:2.15;
}
.hero-actions{
  margin-top:34px;
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:9px;
  min-height:48px;
  padding:13px 22px;
  border:1px solid var(--line-strong);
  font-weight:800;
  font-size:14px;
  letter-spacing:.02em;
}
.btn.primary{background:var(--green);border-color:var(--green);color:#061006}
.btn.secondary{color:var(--white);background:rgba(255,255,255,.04)}
.btn:hover{transform:translateY(-2px)}
.model-card{
  position:relative;
  border:1px solid var(--line);
  background:rgba(17,21,21,.78);
  backdrop-filter:blur(8px);
  padding:22px;
  min-height:420px;
  overflow:hidden;
}
.model-card::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(135deg,rgba(91,229,43,.14),transparent 36%),
    linear-gradient(315deg,rgba(84,198,216,.11),transparent 38%);
  pointer-events:none;
}
.model-card h2{
  position:relative;
  color:var(--white);
  font-size:18px;
  line-height:1.55;
  margin-bottom:18px;
}
.stack{
  position:relative;
  display:grid;
  gap:12px;
}
.layer{
  border:1px solid rgba(255,255,255,.15);
  background:rgba(0,0,0,.24);
  padding:15px 16px;
  display:grid;
  grid-template-columns:88px 1fr;
  gap:16px;
  align-items:center;
}
.layer b{
  font-family:var(--latin);
  font-size:12px;
  letter-spacing:.13em;
  color:var(--green);
  text-transform:uppercase;
}
.layer p{font-size:13.5px;color:var(--muted);line-height:1.75}
.layer:nth-child(2) b{color:var(--cyan)}
.layer:nth-child(3) b{color:var(--amber)}
.metric-row{
  position:relative;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
  margin-top:16px;
}
.mini{
  border-top:2px solid var(--green);
  background:rgba(0,0,0,.22);
  padding:14px 12px 13px;
}
.mini:nth-child(2){border-top-color:var(--cyan)}
.mini:nth-child(3){border-top-color:var(--amber)}
.mini .num{font-family:var(--latin);font-size:22px;font-weight:800;color:var(--white);line-height:1}
.mini .lbl{font-size:11.5px;color:var(--muted);line-height:1.55;margin-top:8px}
.model-slice{
  position:relative;
  display:grid;
  gap:8px;
  margin-top:18px;
}
.slice-layer{
  position:relative;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(0,0,0,.22);
  padding:14px 15px;
  display:grid;
  grid-template-columns:92px 1fr;
  gap:14px;
  align-items:center;
  overflow:hidden;
}
.slice-layer::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:var(--green);
}
.slice-layer:nth-child(2)::before{background:var(--amber)}
.slice-layer:nth-child(3)::before{background:var(--cyan)}
.slice-layer:nth-child(4)::before{background:rgba(255,255,255,.52)}
.slice-layer b{
  position:relative;
  font-family:var(--latin);
  color:var(--white);
  font-size:11.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
}
.slice-layer span{position:relative;color:var(--muted);font-size:12.8px;line-height:1.65}

section{padding:clamp(72px,8vw,110px) clamp(20px,5vw,56px)}
.wrap{max-width:var(--maxw);margin:0 auto}
.sec-head{margin-bottom:34px}
.sec-en{
  font-family:var(--latin);
  color:var(--green);
  font-size:12px;
  font-weight:800;
  letter-spacing:.32em;
  text-transform:uppercase;
  margin-bottom:14px;
}
.sec-head h2{
  color:var(--white);
  font-size:clamp(1.55rem,3.4vw,2.45rem);
  line-height:1.48;
  text-wrap:balance;
}
.prose{
  color:var(--muted);
  max-width:780px;
  font-size:15.5px;
  line-height:2.1;
}

.intro-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:36px;
  align-items:start;
}
.statement{
  font-size:clamp(1.28rem,2.6vw,1.85rem);
  line-height:1.8;
  font-weight:800;
  color:var(--white);
  text-wrap:balance;
}
.statement em{font-style:normal;color:var(--green)}
.feature-list{display:grid;gap:13px}
.feature{
  display:grid;
  grid-template-columns:42px 1fr;
  gap:16px;
  align-items:start;
  padding-bottom:15px;
  border-bottom:1px solid var(--line);
}
.feature:last-child{border-bottom:none}
.feature .mark{
  width:42px;
  aspect-ratio:1;
  border:1px solid var(--line-strong);
  display:grid;
  place-items:center;
  font-family:var(--latin);
  color:var(--green);
  font-weight:800;
}
.feature h3{font-size:16px;color:var(--white);line-height:1.55;margin-bottom:4px}
.feature p{font-size:13.5px;color:var(--muted);line-height:1.85}

.process-section{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(90deg,rgba(91,229,43,.08),transparent 42%),
    var(--panel);
}
.process-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:34px;
}
.process-card{
  background:rgba(0,0,0,.20);
  border:1px solid var(--line);
  padding:26px 24px;
  min-height:248px;
}
.process-card .num{
  font-family:var(--latin);
  color:var(--green);
  font-size:12px;
  font-weight:800;
  letter-spacing:.12em;
  margin-bottom:18px;
}
.process-card:nth-child(2) .num{color:var(--cyan)}
.process-card:nth-child(3) .num{color:var(--amber)}
.process-card h3{color:var(--white);font-size:19px;line-height:1.5;margin-bottom:10px}
.process-card p{color:var(--muted);font-size:13.8px;line-height:1.9}

.spec-section{background:#090b0b;border-bottom:1px solid var(--line)}
.spec-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(320px,.76fr);
  gap:28px;
  align-items:start;
}
.spec-panel{
  border:1px solid var(--line);
  background:var(--panel);
  overflow:hidden;
}
.spec-table{width:100%;border-collapse:collapse;font-size:13.5px}
.spec-table th,.spec-table td{padding:15px 17px;border-bottom:1px solid rgba(255,255,255,.10);vertical-align:top;text-align:left}
.spec-table th{width:31%;color:var(--white);font-weight:800;background:rgba(255,255,255,.035)}
.spec-table td{color:var(--muted);line-height:1.75}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:none}
.spec-stats{display:grid;grid-template-columns:1fr;gap:12px}
.spec-stat{
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(91,229,43,.09),rgba(255,255,255,.025));
  padding:20px 19px;
}
.spec-stat:nth-child(2){background:linear-gradient(135deg,rgba(84,198,216,.10),rgba(255,255,255,.025))}
.spec-stat:nth-child(3){background:linear-gradient(135deg,rgba(217,183,101,.12),rgba(255,255,255,.025))}
.spec-stat .v{font-family:var(--latin);font-size:clamp(1.65rem,3vw,2.35rem);font-weight:850;color:var(--white);line-height:1.08}
.spec-stat small{font-family:var(--sans);font-size:.48em;margin-left:4px;color:var(--muted)}
.spec-stat .k{font-size:12.3px;color:var(--muted);line-height:1.65;margin-top:8px}

.data-section{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.data-board{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:38px;
}
.data-card{
  background:var(--panel);
  color:var(--text);
  border:1px solid var(--line);
  padding:24px 22px;
  min-height:214px;
}
.data-card .tag{
  display:inline-flex;
  align-items:center;
  min-height:26px;
  padding:2px 10px;
  font-family:var(--latin);
  font-size:11px;
  font-weight:800;
  letter-spacing:.12em;
  color:var(--green);
  background:rgba(91,229,43,.12);
  margin-bottom:16px;
}
.data-card:nth-child(2) .tag,.data-card:nth-child(5) .tag{color:var(--cyan);background:rgba(84,198,216,.13)}
.data-card:nth-child(3) .tag,.data-card:nth-child(6) .tag{color:var(--amber);background:rgba(217,183,101,.15)}
.data-card h3{font-size:18px;line-height:1.45;margin-bottom:10px;color:var(--white)}
.data-card p{font-size:13.8px;line-height:1.85;color:var(--muted)}
.data-card .examples{
  display:block;
  margin-top:13px;
  font-family:var(--latin);
  font-size:11.5px;
  line-height:1.75;
  color:rgba(231,236,233,.58);
}
.data-note{
  margin-top:18px;
  color:var(--muted);
  font-size:12.5px;
  line-height:1.85;
}

.concept{
  display:grid;
  grid-template-columns:minmax(0,.94fr) minmax(0,1.06fr);
  gap:42px;
  align-items:center;
}
.diagram{
  border:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(91,229,43,.08),transparent 34%),
    var(--panel);
  padding:28px;
}
.fig-note{
  margin-top:14px;
  font-size:12.5px;
  line-height:1.75;
  color:var(--muted);
}
.slice{
  display:grid;
  grid-template-rows:92px 80px 98px 118px;
  gap:8px;
}
.band{
  position:relative;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:18px 20px;
}
.band strong{font-size:15px;color:var(--white)}
.band span{font-size:12.5px;color:var(--muted)}
.band.surface{background:linear-gradient(90deg,rgba(91,229,43,.16),rgba(91,229,43,.05))}
.band.soil{background:linear-gradient(90deg,rgba(217,183,101,.16),rgba(217,183,101,.05))}
.band.geology{background:linear-gradient(90deg,rgba(84,198,216,.13),rgba(84,198,216,.045))}
.band.deep{background:rgba(0,0,0,.26)}
.flow-line{
  position:absolute;
  width:54%;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan),transparent);
  transform:rotate(-6deg);
  right:18px;
  bottom:20px;
}
.flow-line.two{width:46%;right:22%;bottom:32px;transform:rotate(5deg);background:linear-gradient(90deg,transparent,var(--green),transparent)}
.concept-points{display:grid;gap:20px}
.point{
  border-left:3px solid var(--green);
  padding-left:18px;
}
.point:nth-child(2){border-left-color:var(--cyan)}
.point:nth-child(3){border-left-color:var(--amber)}
.point h3{font-size:18px;color:var(--white);margin-bottom:5px}
.point p{font-size:14.5px;color:var(--muted);line-height:1.95}

.results-section{background:var(--bg2);border-top:1px solid var(--line)}
.result-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:12px;
  margin-top:34px;
}
.result-card{
  min-height:118px;
  border:1px solid var(--line);
  background:var(--panel);
  padding:19px 16px;
}
.result-card .ic{width:34px;height:34px;color:var(--green);margin-bottom:13px}
.result-card:nth-child(3n+2) .ic{color:var(--cyan)}
.result-card:nth-child(3n) .ic{color:var(--amber)}
.result-card h3{font-size:15px;color:var(--white);line-height:1.5;margin-bottom:6px}
.result-card span{font-family:var(--latin);font-size:11.5px;color:var(--green);letter-spacing:.06em}

.use-section{background:#090b0b;color:var(--text);border-top:1px solid var(--line)}
.use-section .sec-en{color:var(--green)}
.use-section .sec-head h2{color:var(--white)}
.use-section .prose{color:var(--muted)}
.use-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:36px;
}
.use{
  background:var(--panel);
  border:1px solid var(--line);
  padding:26px 24px;
}
.use h3{font-size:17px;line-height:1.5;margin-bottom:9px;color:var(--white)}
.use p{font-size:13.8px;line-height:1.85;color:var(--muted)}

.cta{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(90deg,rgba(91,229,43,.10),transparent 40%),
    linear-gradient(270deg,rgba(84,198,216,.10),transparent 40%),
    var(--panel);
  border-top:1px solid var(--line);
}
.cta .wrap{
  display:grid;
  grid-template-columns:1fr auto;
  gap:34px;
  align-items:center;
}
.cta-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.cta h2{
  color:var(--white);
  font-size:clamp(1.55rem,3.2vw,2.25rem);
  line-height:1.55;
  text-wrap:balance;
}
.cta p{color:var(--muted);font-size:15px;line-height:2;margin-top:12px;max-width:760px}

footer{
  background:#0a0d0c;
  border-top:1px solid var(--line);
  padding:44px clamp(20px,5vw,56px) 34px;
  color:rgba(255,255,255,.55);
}
.foot{
  max-width:var(--maxw);
  margin:0 auto;
  display:flex;
  justify-content:space-between;
  gap:28px;
  align-items:flex-end;
}
.foot-logo{display:inline-flex;align-items:center}
.foot-logo:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}
.foot-logo img{height:32px;width:auto;mix-blend-mode:screen}
.foot-logo + b{margin-top:12px}
.foot b{display:block;color:var(--white);font-size:14px;margin-bottom:4px}
.foot p,.foot small{font-size:12px;line-height:1.8}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .75s ease,transform .75s ease}
.reveal.in{opacity:1;transform:none}

@media(max-width:980px){
  .intro-grid,.concept,.cta .wrap,.spec-layout{grid-template-columns:1fr}
  .model-card{min-height:auto}
  .process-grid,.data-board,.use-grid,.result-grid{grid-template-columns:repeat(2,1fr)}
  .cta-actions{justify-content:flex-start}
}
@media(max-width:640px){
  .hero{min-height:auto}
  .hero-inner{padding-top:104px;gap:30px}
  .hero-actions{display:grid}
  .btn{justify-content:center;width:100%}
  .slice-layer{grid-template-columns:1fr;gap:5px}
  .metric-row,.process-grid,.data-board,.use-grid,.result-grid{grid-template-columns:1fr}
  .spec-table th,.spec-table td{display:block;width:100%}
  .spec-table th{border-bottom:none;padding-bottom:4px}
  .spec-table td{padding-top:4px}
  .slice{grid-template-rows:auto}
  .band{min-height:86px;align-items:flex-start;flex-direction:column}
  .foot{display:block}
  .foot small{display:block;margin-top:22px}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover{transform:none}
}