*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
:root{
  --bg:#ffffff;          /* 白背景 */
  --bg-soft:#f8fafc;     /* やや灰色 */
  --bg-card:#f1f5f9;     /* カード背景 */
  --line:#e2e8f0;        /* 薄罫線 */
  --line-2:#cbd5e1;      /* やや濃い罫線 */
  --text:#0f172a;        /* ダークスレート */
  --text-2:#334155;
  --text-mute:#64748b;   /* グレー */
  --text-dim:#94a3b8;
  --accent:#0891b2;      /* ティール（さわやか） */
  --accent-2:#0e7490;    /* 濃いティール */
  --accent-soft:#e0f7fa; /* 薄いティール */
  --warn:#ea580c;
  --pass:#059669;
  --dark:#0f172a;        /* アクセントとしての暗色 */
}

html{scroll-behavior:smooth;background:var(--bg);}
body{
  font-family:'Noto Sans JP',sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
.mono{font-family:'JetBrains Mono','Roboto Mono',monospace;font-feature-settings:'tnum';}

img{display:block;max-width:100%;}
a{color:inherit;}

/* === Demo banner === */
.demo-tag{
  position:fixed;top:0;left:0;right:0;background:#0f172a;color:#fff;
  text-align:center;padding:8px 12px;font-size:0.7rem;letter-spacing:0.05em;z-index:200;
}

/* === Header === */
header{
  position:fixed;top:38px;left:0;right:0;
  background:rgba(255,255,255,0.92);backdrop-filter:blur(12px);
  z-index:100;height:64px;display:flex;align-items:center;
  justify-content:space-between;padding:0 40px;
  border-bottom:1px solid var(--line);
}
.logo{display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;}
.logo-mark{
  width:38px;height:38px;background:var(--accent);color:#fff;
  display:grid;place-items:center;
  font-family:'JetBrains Mono',monospace;font-weight:700;font-size:1.1rem;
}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
.logo-text span{font-size:0.9rem;font-weight:700;letter-spacing:0.02em;}
.logo-text small{font-family:'JetBrains Mono',monospace;font-size:0.55rem;color:var(--text-mute);letter-spacing:0.15em;margin-top:3px;}
nav{display:flex;align-items:center;gap:4px;}
nav a{
  color:var(--text-2);text-decoration:none;
  font-size:0.78rem;padding:8px 14px;
  font-family:'JetBrains Mono',monospace;letter-spacing:0.05em;
  text-transform:uppercase;
}
nav a:hover{color:var(--accent);}
nav a.current{color:var(--accent);}
.nav-cta{
  background:var(--accent)!important;color:#fff!important;
  font-weight:700!important;padding:9px 20px!important;
}

/* === Hero (Bento grid) === */
.hero{
  padding:118px 40px 80px;
  min-height:100vh;
  display:grid;grid-template-columns:1.3fr 1fr;gap:32px;
  align-items:start;
  background:linear-gradient(180deg,rgba(255,255,255,0.94) 0%,rgba(248,250,252,0.97) 60%,rgba(255,255,255,1) 100%),url('images/hero.jpg') center/cover no-repeat;
}
.hero-text{position:sticky;top:120px;}
.tag-mono{
  display:inline-flex;align-items:center;gap:8px;
  font-family:'JetBrains Mono',monospace;
  font-size:0.7rem;letter-spacing:0.2em;color:var(--accent);
  padding:6px 12px;border:1px solid var(--accent);margin-bottom:24px;
  background:var(--accent-soft);
}
.tag-mono::before{content:'';width:6px;height:6px;background:var(--accent);border-radius:50%;}
.hero h1{
  font-family:'Noto Sans JP',sans-serif;
  font-size:clamp(2.4rem,5vw,4.6rem);font-weight:900;
  line-height:1.15;letter-spacing:-0.02em;color:var(--text);
  margin-bottom:24px;
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero-meta{
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
  margin:32px 0;
  padding:24px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.meta-row .meta-key{
  font-family:'JetBrains Mono',monospace;
  font-size:0.7rem;letter-spacing:0.15em;color:var(--text-mute);
  margin-bottom:4px;
}
.meta-row .meta-val{
  font-family:'JetBrains Mono',monospace;
  font-size:1.2rem;color:var(--accent);font-weight:700;
}
.meta-row .meta-val small{font-size:0.7rem;color:var(--text-mute);}
.hero-lead{color:var(--text-2);font-size:0.95rem;line-height:2;margin-bottom:32px;max-width:520px;}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;}
.btn{
  display:inline-block;padding:14px 28px;
  text-decoration:none;font-weight:600;font-size:0.85rem;
  font-family:'JetBrains Mono',monospace;letter-spacing:0.1em;
  text-transform:uppercase;border:none;cursor:pointer;
  transition:all 0.2s;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-2);}
.btn-out{background:transparent;border:1px solid var(--line-2);color:var(--text-2);}
.btn-out:hover{border-color:var(--accent);color:var(--accent);}

/* Bento grid */
.hero-bento{
  display:grid;grid-template-columns:repeat(3,1fr);
  grid-auto-rows:120px;gap:8px;
}
.bento{
  background:linear-gradient(135deg,var(--bg-card),var(--bg-soft));
  background-size:cover;background-position:center;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:14px;color:#fff;overflow:hidden;
  position:relative;border:1px solid var(--line);
}
.bento[data-img]{}
.bento .b-cat,.bento .b-title,.bento .b-spec{position:relative;z-index:2;}
.bento .b-title{color:#fff;text-shadow:0 1px 4px rgba(0,0,0,0.6);}
.bento .b-spec{color:rgba(255,255,255,0.9);text-shadow:0 1px 3px rgba(0,0,0,0.5);}
.bento.has-img::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 30%,rgba(0,0,0,0.65) 100%);
  z-index:1;
}
.bento.b-2x2{grid-column:span 2;grid-row:span 2;}
.bento.b-1x2{grid-column:span 1;grid-row:span 2;}
.bento.b-3x1{grid-column:span 3;grid-row:span 1;}
.bento .b-cat{
  font-family:'JetBrains Mono',monospace;
  font-size:0.6rem;letter-spacing:0.2em;color:var(--accent);
  margin-bottom:4px;
}
.bento .b-title{font-size:0.85rem;font-weight:700;color:var(--text);}
.bento .b-spec{
  font-family:'JetBrains Mono',monospace;
  font-size:0.65rem;color:var(--text-mute);margin-top:2px;
}
.bento:not(.has-img)::before{
  content:'';position:absolute;inset:0;opacity:0.4;
  background:linear-gradient(120deg,transparent 30%,var(--accent-soft) 80%);
  pointer-events:none;
}
.bento:not(.has-img) .b-title{color:var(--text);text-shadow:none;}
.bento:not(.has-img) .b-spec{color:var(--text-mute);text-shadow:none;}

/* === Section common === */
.section{padding:96px 40px;}
.section-head{margin-bottom:48px;}
.section-head .num{
  font-family:'JetBrains Mono',monospace;
  color:var(--accent);font-size:0.85rem;letter-spacing:0.15em;
}
.section-head h2{
  font-family:'Noto Sans JP',sans-serif;font-weight:900;
  font-size:clamp(2rem,3.5vw,3rem);line-height:1.2;
  margin:8px 0 16px;color:var(--text);
}
.section-head p{color:var(--text-mute);font-size:0.95rem;line-height:1.9;max-width:680px;}

/* === Materials === */
.materials{padding:96px 40px;background:var(--bg-soft);}
.materials-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border:1px solid var(--line);background:var(--bg);
  max-width:1200px;margin:0 auto;
}
.material-cell{
  padding:32px 24px;border-right:1px solid var(--line);
  text-align:center;
}
.material-cell:last-child{border-right:none;}
.material-cell .name{
  font-family:'JetBrains Mono',monospace;font-size:1.6rem;font-weight:700;
  color:var(--accent);letter-spacing:0.05em;
}
.material-cell .desc{
  color:var(--text-mute);font-size:0.78rem;margin-top:8px;line-height:1.6;
}

/* === Capabilities === */
.capabilities{padding:96px 40px;background:var(--bg);}
.cap-grid{
  max-width:1200px;margin:0 auto;
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.cap-card{
  background:var(--bg);padding:36px 28px;
  display:flex;flex-direction:column;gap:14px;
  transition:background 0.2s;
}
.cap-card:hover{background:var(--bg-soft);}
.cap-num{
  font-family:'JetBrains Mono',monospace;font-size:0.75rem;
  color:var(--accent);letter-spacing:0.15em;
}
.cap-card h3{
  font-size:1.2rem;font-weight:700;color:var(--text);
  margin-bottom:6px;line-height:1.4;
}
.cap-card p{color:var(--text-mute);font-size:0.85rem;line-height:1.85;}
.cap-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);}
.cap-tag{
  font-family:'JetBrains Mono',monospace;font-size:0.65rem;
  padding:3px 8px;background:var(--accent-soft);color:var(--accent-2);
  letter-spacing:0.05em;
}

/* === Works gallery === */
.works{padding:96px 40px;background:var(--bg-soft);}
.works-grid{
  max-width:1300px;margin:0 auto;
  display:grid;grid-template-columns:repeat(4,1fr);gap:8px;
}
.work-tile{
  background:linear-gradient(135deg,#fff,var(--bg-card));
  background-size:cover;background-position:center;
  aspect-ratio:1;padding:18px;display:flex;flex-direction:column;
  justify-content:space-between;border:1px solid var(--line);
  position:relative;overflow:hidden;color:#fff;
  transition:border-color 0.2s,transform 0.2s;
}
.work-tile.has-img::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,0.2) 0%,rgba(0,0,0,0.7) 100%);
  z-index:0;
}
.work-tile.has-img .work-tile-top,.work-tile.has-img .work-tile-bottom{position:relative;z-index:1;}
.work-tile.has-img h3{color:#fff;text-shadow:0 1px 4px rgba(0,0,0,0.6);}
.work-tile.has-img .work-tile-spec{color:rgba(255,255,255,0.9);}
.work-tile:hover{border-color:var(--accent);transform:translateY(-2px);}
.work-tile.feature{grid-column:span 2;grid-row:span 2;background:linear-gradient(135deg,var(--accent-soft),#fff);}
.work-tile::after{
  content:'';position:absolute;inset:0;opacity:0.3;
  background:radial-gradient(circle at 100% 0%,var(--accent-soft),transparent 60%);
  pointer-events:none;
}
.work-tile-top{display:flex;justify-content:space-between;align-items:flex-start;}
.work-tile-cat{
  font-family:'JetBrains Mono',monospace;font-size:0.6rem;
  color:var(--accent);letter-spacing:0.2em;
}
.work-tile-num{
  font-family:'JetBrains Mono',monospace;font-size:0.55rem;
  color:var(--text-dim);
}
.work-tile-bottom{position:relative;z-index:1;}
.work-tile h3{font-size:0.95rem;font-weight:700;margin-bottom:4px;line-height:1.4;color:var(--text);}
.work-tile.feature h3{font-size:1.4rem;}
.work-tile-spec{
  font-family:'JetBrains Mono',monospace;font-size:0.65rem;
  color:var(--text-mute);
}

/* === Process === */
.process{padding:96px 40px;background:var(--bg);}
.process-steps{
  max-width:1100px;margin:0 auto;
  display:grid;grid-template-columns:repeat(5,1fr);gap:0;
  position:relative;
}
.process-steps::before{
  content:'';position:absolute;top:36px;left:5%;right:5%;
  height:1px;background:var(--line-2);
}
.process-step{
  text-align:center;padding:0 8px;position:relative;z-index:1;
}
.process-step .step-num{
  width:72px;height:72px;background:var(--bg);
  border:2px solid var(--accent);color:var(--accent);
  font-family:'JetBrains Mono',monospace;font-size:1.4rem;font-weight:700;
  display:grid;place-items:center;margin:0 auto 18px;border-radius:50%;
}
.process-step h3{font-size:1rem;font-weight:700;color:var(--text);margin-bottom:8px;}
.process-step p{font-size:0.78rem;color:var(--text-mute);line-height:1.7;}

/* === About / Company === */
.about{padding:96px 40px;background:var(--bg-soft);}
.about-grid{
  max-width:1100px;margin:0 auto;
  display:grid;grid-template-columns:1fr 1.4fr;gap:64px;align-items:start;
}
.about-info-table{width:100%;border-collapse:collapse;font-size:0.88rem;background:var(--bg);}
.about-info-table th,.about-info-table td{
  text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);
  vertical-align:top;
}
.about-info-table th{
  width:120px;color:var(--text-mute);font-weight:500;
  font-family:'JetBrains Mono',monospace;font-size:0.7rem;
  letter-spacing:0.1em;text-transform:uppercase;background:var(--bg-soft);
}
.about-info-table td{color:var(--text);line-height:1.8;}

/* === Contact === */
.contact{padding:96px 40px;background:var(--bg);}
.contact-card{
  max-width:680px;margin:0 auto;background:var(--bg-soft);
  padding:56px 48px;border:1px solid var(--line);text-align:center;
}
.contact-eng{
  font-family:'JetBrains Mono',monospace;font-size:0.7rem;
  letter-spacing:0.2em;color:var(--accent);margin-bottom:8px;
}
.contact-card h2{
  font-size:2rem;color:var(--text);margin:0 0 12px;font-weight:900;
}
.contact-card > p{color:var(--text-mute);font-size:0.9rem;margin-bottom:32px;}
.contact-tel{
  font-family:'JetBrains Mono',monospace;font-size:2.2rem;
  color:var(--accent);font-weight:700;letter-spacing:0.05em;
  display:block;margin-bottom:8px;text-decoration:none;
}
.contact-tel-note{font-size:0.78rem;color:var(--text-mute);margin-bottom:24px;display:block;}

/* === Footer === */
footer{
  background:var(--text);color:rgba(255,255,255,0.7);padding:48px 40px;
}
.footer-inner{
  max-width:1300px;margin:0 auto;
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:32px;
  padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,0.1);margin-bottom:24px;
}
.footer-info{font-size:0.78rem;line-height:1.85;font-family:'JetBrains Mono',monospace;}
.footer-h{
  color:var(--accent);font-family:'JetBrains Mono',monospace;font-size:0.65rem;
  letter-spacing:0.2em;margin-bottom:14px;text-transform:uppercase;
}
.footer-nav{display:flex;flex-direction:column;gap:6px;}
.footer-nav a{
  color:rgba(255,255,255,0.6);text-decoration:none;font-size:0.78rem;
}
.footer-nav a:hover{color:var(--accent);}
.footer-copy{font-size:0.7rem;color:rgba(255,255,255,0.4);text-align:center;
font-family:'JetBrains Mono',monospace;letter-spacing:0.1em;}

/* === Page hero (sub pages) === */
.page-hero{
  padding:140px 40px 60px;background:var(--bg-soft);
  border-bottom:1px solid var(--line);
}
.page-hero-inner{max-width:1200px;margin:0 auto;}
.page-hero .crumb{
  font-family:'JetBrains Mono',monospace;color:var(--accent);
  font-size:0.75rem;letter-spacing:0.2em;margin-bottom:12px;
}
.page-hero h1{
  font-size:clamp(1.8rem,3.5vw,2.8rem);font-weight:900;
  color:var(--text);margin-bottom:14px;
}
.page-hero p{color:var(--text-mute);max-width:680px;line-height:1.95;}

/* === Mobile === */
@media(max-width:900px){
  header{padding:0 20px;height:56px;}
  nav a:not(.nav-cta){display:none;}
  .hero{grid-template-columns:1fr;padding:110px 20px 60px;}
  .hero-text{position:static;}
  .hero-bento{grid-template-columns:repeat(2,1fr);grid-auto-rows:100px;}
  .section,.materials,.capabilities,.works,.about,.process,.contact{padding:64px 20px;}
  .materials-grid{grid-template-columns:repeat(2,1fr);}
  .material-cell:nth-child(2){border-right:none;}
  .cap-grid{grid-template-columns:1fr;}
  .works-grid{grid-template-columns:repeat(2,1fr);}
  .process-steps{grid-template-columns:1fr;gap:24px;}
  .process-steps::before{display:none;}
  .about-grid{grid-template-columns:1fr;gap:32px;}
  .footer-inner{grid-template-columns:1fr;gap:24px;}
  .contact-card{padding:40px 24px;}
  .contact-tel{font-size:1.6rem;}
  .demo-tag{font-size:0.6rem;padding:6px 8px;}
}