/* ========== RESET & BASE ========== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --charcoal:#3D3D3D;
  --dark:#1A1A1A;
  --darker:#111;
  --copper:#B9875A;
  --copper-light:#D4A373;
  --copper-dim:rgba(185,135,90,.15);
  --white:#fff;
  --gray-100:#F5F5F5;
  --gray-200:#E5E5E5;
  --gray-400:#999;
  --gray-500:#777;
  --gray-600:#555;
  --gray-700:#333;
  --font-en:'Barlow Condensed',sans-serif;
  --font-jp:'Noto Sans JP','Hiragino Kaku Gothic ProN',sans-serif;
  --ease:cubic-bezier(0.16,1,0.3,1);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-jp);background:var(--gray-100);color:var(--charcoal);line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:all .3s}
ul{list-style:none}
.container{max-width:1140px;margin:0 auto;padding:0 40px}
@media(max-width:768px){.container{padding:0 20px}}

/* ========== HEADER ========== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:14px 0;background:rgba(26,26,26,.95);
  backdrop-filter:blur(12px);border-bottom:1px solid rgba(185,135,90,.1);
  transition:padding .3s;
}
.header.scrolled{padding:8px 0}
.header-inner{max-width:1140px;margin:0 auto;padding:0 40px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px}
.logo-mark{
  width:36px;height:36px;background:var(--copper);color:var(--dark);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-en);font-weight:800;font-size:.75rem;letter-spacing:.05em;
}
.logo-text{font-family:var(--font-en);font-size:.75rem;font-weight:700;color:var(--white);line-height:1.2;letter-spacing:.1em;text-transform:uppercase}
.nav{display:flex;align-items:center;gap:28px}
.nav-list{display:flex;gap:24px}
.nav-link{font-family:var(--font-en);font-size:.75rem;font-weight:600;color:var(--gray-400);letter-spacing:.12em;text-transform:uppercase;transition:color .3s}
.nav-link:hover{color:var(--copper)}
.nav-cta{
  font-family:var(--font-en);font-size:.72rem;font-weight:700;
  color:var(--dark);background:var(--copper);
  padding:8px 20px;letter-spacing:.1em;text-transform:uppercase;
  transition:background .3s;
}
.nav-cta:hover{background:var(--copper-light)}

.hamburger{display:none;width:28px;height:20px;background:none;border:none;cursor:pointer;position:relative;z-index:110}
.hamburger span{display:block;width:100%;height:1.5px;background:var(--gray-400);position:absolute;left:0;transition:all .3s var(--ease)}
.hamburger span:nth-child(1){top:0}
.hamburger span:nth-child(2){top:50%;transform:translateY(-50%)}
.hamburger span:nth-child(3){bottom:0}
.hamburger.active span:nth-child(1){top:50%;transform:translateY(-50%) rotate(45deg);background:var(--copper)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){bottom:50%;transform:translateY(50%) rotate(-45deg);background:var(--copper)}
@media(max-width:840px){
  .hamburger{display:block}
  .nav{position:fixed;inset:0;background:var(--dark);flex-direction:column;align-items:center;justify-content:center;gap:24px;opacity:0;visibility:hidden;transition:all .4s var(--ease)}
  .nav.open{opacity:1;visibility:visible}
  .nav-list{flex-direction:column;align-items:center;gap:20px}
  .nav-link{font-size:.9rem;color:var(--gray-400)}
  .header-inner{padding:0 20px}
}

/* ========== HERO ========== */
.hero{
  min-height:100vh;display:flex;align-items:center;
  position:relative;overflow:hidden;
  padding:120px 40px 0;background:url("https://images.unsplash.com/photo-1504307651254-35680f356dfd?auto=format&fit=crop&w=1920&q=80") center/cover no-repeat;
}
.hero-grid-svg{position:absolute;inset:0;z-index:1}
.grid-line{opacity:0;animation:gridFade 3s ease forwards}
.grid-line-1{animation-delay:.5s}
.grid-line-2{animation-delay:1s}
.grid-line-h{animation-delay:1.5s}
.grid-line-v{animation-delay:2s}
@keyframes gridFade{to{opacity:1}}

.hero-content{position:relative;z-index:2;max-width:1140px;margin:0 auto;width:100%}
.hero-label{display:flex;align-items:center;gap:12px;margin-bottom:24px;color:var(--copper);font-family:var(--font-en);font-size:.65rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase}
.hero-label-line{width:40px;height:1px;background:var(--copper)}
.hero-title{
  font-size:clamp(2.8rem,6vw,5rem);font-weight:900;
  color:var(--white);line-height:1.2;margin-bottom:24px;
}
.hero-desc{font-size:.95rem;color:var(--gray-400);line-height:2;max-width:460px;margin-bottom:40px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

.hero-data-strip{
  position:absolute;bottom:0;left:0;right:0;z-index:2;
  display:flex;border-top:1px solid rgba(185,135,90,.15);
}
.data-cell{
  flex:1;padding:28px 20px;text-align:center;
  border-right:1px solid rgba(185,135,90,.1);
}
.data-cell:last-child{border-right:none}
.data-num{display:block;font-family:var(--font-en);font-size:1.8rem;font-weight:800;color:var(--copper);letter-spacing:.02em}
.data-label{display:block;font-family:var(--font-en);font-size:.6rem;font-weight:600;color:var(--gray-500);letter-spacing:.15em;margin-top:4px;text-transform:uppercase}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-en);font-size:.75rem;font-weight:700;
  padding:14px 28px;letter-spacing:.12em;text-transform:uppercase;
  transition:all .3s var(--ease);
}
.btn--copper{background:var(--copper);color:var(--dark)}
.btn--copper:hover{background:var(--copper-light);transform:translateY(-2px);box-shadow:0 6px 20px rgba(185,135,90,.3)}
.btn--wire{background:transparent;color:var(--copper);border:1px solid var(--copper)}
.btn--wire:hover{background:var(--copper);color:var(--dark)}

@media(max-width:768px){
  .hero{padding:120px 20px 0}
  .hero-data-strip{flex-wrap:wrap}
  .data-cell{width:50%;border-bottom:1px solid rgba(185,135,90,.1)}
}

/* ========== SECTIONS ========== */
.section{padding:100px 0}
.section--dark{background:var(--dark);color:var(--white)}

.section-header{margin-bottom:56px}
.section-label{
  font-family:var(--font-en);font-size:.65rem;font-weight:700;
  letter-spacing:.2em;color:var(--copper);
  display:block;margin-bottom:10px;text-transform:uppercase;
}
.section-title{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:900;line-height:1.4}
.section--dark .section-title{color:var(--white)}

@media(max-width:768px){.section{padding:72px 0}}

/* ========== ABOUT QUAD GRID ========== */
.quad-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px;background:var(--gray-200)}
.quad-panel{background:var(--white);padding:48px 40px}
.quad-panel--text{display:flex;flex-direction:column;justify-content:center}
.panel-label{
  font-family:var(--font-en);font-size:.65rem;font-weight:700;
  letter-spacing:.2em;color:var(--copper);margin-bottom:12px;text-transform:uppercase;
}
.panel-title{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:900;line-height:1.4;color:var(--dark)}
.quad-panel--desc p{font-size:.88rem;color:var(--gray-600);line-height:2;margin-bottom:14px}
.quad-panel--desc p:last-child{margin-bottom:0}

.list-heading{
  font-family:var(--font-en);font-size:.65rem;font-weight:700;
  letter-spacing:.2em;color:var(--copper);margin-bottom:20px;text-transform:uppercase;
}
.border-list li{
  font-size:.85rem;color:var(--gray-700);
  padding:12px 0 12px 16px;
  border-left:3px solid var(--copper);
  margin-bottom:8px;
  background:rgba(185,135,90,.03);
  padding-left:20px;
}

.cert-badges{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.cert-badge{
  background:var(--gray-100);padding:20px 16px;text-align:center;
}
.cert-name{display:block;font-family:var(--font-en);font-size:.9rem;font-weight:800;color:var(--dark);letter-spacing:.08em}
.cert-sub{display:block;font-size:.7rem;color:var(--gray-500);margin-top:4px}

@media(max-width:640px){
  .quad-grid{grid-template-columns:1fr}
  .quad-panel{padding:32px 24px}
}

/* ========== CAPABILITY ========== */
.cap-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px}
.cap-card{
  background:rgba(255,255,255,.04);padding:40px 36px;
  border-left:3px solid transparent;
  transition:border-color .3s,background .3s;
}
.cap-card:hover{border-left-color:var(--copper);background:rgba(255,255,255,.06)}
.cap-icon{
  font-family:var(--font-en);font-size:.65rem;font-weight:800;
  color:var(--copper);letter-spacing:.15em;margin-bottom:16px;
}
.cap-card h3{font-size:1.05rem;font-weight:700;color:var(--white);margin-bottom:10px}
.cap-card p{font-size:.85rem;color:var(--gray-400);line-height:1.9;margin-bottom:16px}
.cap-specs{display:flex;flex-wrap:wrap;gap:6px}
.cap-specs span{
  font-family:var(--font-en);font-size:.62rem;font-weight:600;
  color:var(--copper);letter-spacing:.08em;text-transform:uppercase;
  background:var(--copper-dim);padding:4px 10px;
}
@media(max-width:640px){.cap-grid{grid-template-columns:1fr}}

/* ========== SPECS ========== */
.specs-table{max-width:800px}
.spec-row{
  display:flex;padding:16px 0;
  border-bottom:1px solid var(--gray-200);
}
.spec-row:last-child{border:none}
.spec-cat{
  width:140px;flex-shrink:0;
  font-family:var(--font-en);font-size:.7rem;font-weight:700;
  color:var(--copper);letter-spacing:.1em;text-transform:uppercase;
  padding-top:2px;
}
.spec-val{font-size:.88rem;color:var(--gray-700)}
@media(max-width:640px){
  .spec-row{flex-direction:column;gap:4px}
  .spec-cat{width:auto}
}

/* ========== PROJECTS ========== */
.proj-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px}
.proj-card{
  background:rgba(255,255,255,.03);overflow:hidden;
  transition:background .3s;
}
.proj-card:hover{background:rgba(255,255,255,.06)}
.proj-image{overflow:hidden}
.proj-image svg{width:100%;height:auto;display:block;transition:transform .6s var(--ease)}
.proj-card:hover .proj-image svg{transform:scale(1.03)}
.proj-body{padding:24px 28px}
.proj-tag{
  font-family:var(--font-en);font-size:.6rem;font-weight:700;
  color:var(--copper);letter-spacing:.15em;text-transform:uppercase;
}
.proj-body h3{font-size:.95rem;font-weight:700;color:var(--white);margin:8px 0 6px}
.proj-body p{font-size:.78rem;color:var(--gray-500)}
@media(max-width:640px){.proj-grid{grid-template-columns:1fr}}

/* ========== COMPANY TABLE ========== */
.company-table{max-width:780px}
.ct-row{display:flex;padding:14px 0;border-bottom:1px solid var(--gray-200)}
.ct-row:last-child{border:none}
.ct-key{
  width:140px;flex-shrink:0;
  font-family:var(--font-en);font-size:.7rem;font-weight:700;
  color:var(--copper);letter-spacing:.1em;text-transform:uppercase;
  padding-top:2px;
}
.ct-val{font-size:.88rem;color:var(--gray-700)}
@media(max-width:640px){
  .ct-row{flex-direction:column;gap:4px}
  .ct-key{width:auto}
}

/* ========== RECRUIT ========== */
.recruit-split{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.recruit-text{font-size:.9rem;color:var(--gray-400);line-height:2;margin:20px 0 32px}
.recruit-stats{display:grid;grid-template-columns:1fr 1fr;gap:2px}
.r-stat{
  background:rgba(255,255,255,.04);padding:32px 24px;text-align:center;
}
.r-stat-num{font-family:var(--font-en);font-size:2rem;font-weight:800;color:var(--copper)}
.r-stat-unit{font-family:var(--font-en);font-size:.8rem;font-weight:500;color:var(--copper);opacity:.7}
.r-stat-label{display:block;font-size:.72rem;color:var(--gray-500);margin-top:6px}
@media(max-width:840px){.recruit-split{grid-template-columns:1fr;gap:40px}}

/* ========== CONTACT ========== */
.contact-split{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.contact-desc{font-size:.9rem;color:var(--gray-600);line-height:2;margin-top:16px}
.contact-right{display:flex;flex-direction:column;gap:2px}
.contact-block{
  display:block;background:var(--dark);padding:28px 32px;color:var(--white);
  transition:background .3s;
}
.contact-block:hover{background:var(--charcoal)}
.cb-label{
  display:block;font-family:var(--font-en);font-size:.6rem;font-weight:700;
  color:var(--copper);letter-spacing:.2em;margin-bottom:6px;
}
.cb-value{display:block;font-size:1.05rem;font-weight:700;margin-bottom:4px}
.cb-note{display:block;font-size:.72rem;color:var(--gray-500)}
@media(max-width:840px){.contact-split{grid-template-columns:1fr;gap:40px}}

/* ========== FOOTER ========== */
.footer{background:var(--darker);color:var(--gray-500);padding:64px 0 32px}
.footer-inner{display:grid;grid-template-columns:1fr 2fr;gap:60px;margin-bottom:48px}
.footer-addr{font-size:.78rem;color:var(--gray-600);margin-top:16px;line-height:1.8}
.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.footer-links h4{font-family:var(--font-en);font-size:.6rem;font-weight:700;color:var(--gray-500);letter-spacing:.15em;margin-bottom:12px;text-transform:uppercase}
.footer-links a{display:block;font-size:.78rem;color:var(--gray-600);padding:3px 0;transition:color .3s}
.footer-links a:hover{color:var(--copper)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.05);padding-top:24px;text-align:center}
.footer-bottom p{font-family:var(--font-en);font-size:.65rem;color:var(--gray-600);letter-spacing:.08em}
@media(max-width:840px){.footer-inner{grid-template-columns:1fr;gap:32px}}

/* ========== ANIMATIONS ========== */
[data-anim]{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
[data-anim].visible{opacity:1;transform:translateY(0)}
[data-delay="1"]{transition-delay:.12s}
[data-delay="2"]{transition-delay:.24s}
[data-delay="3"]{transition-delay:.36s}