:root{
  --bg:#f7f5f1;
  --bg-alt:#efece5;
  --ink:#1c1a17;
  --ink-soft:#5a564e;
  --line:#c9c2b4;
  --accent:#8a7a5c;
  --dark:#1c1a17;
  --support-bg:#4a473e;
  --dark-ink:#f2efe8;
  --serif:'Shippori Mincho','EB Garamond',serif;
  --sans:'Zen Kaku Gothic New',-apple-system,'Hiragino Kaku Gothic ProN',sans-serif;
  --maxw:1240px;
  --dur:.9s;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-weight:300;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
img,svg{display:block;max-width:100%;}
button{font-family:inherit;background:none;border:none;cursor:pointer;color:inherit;}
input,textarea,select{font-family:inherit;}

::selection{background:var(--ink);color:var(--bg);}

/* ---------- loader ---------- */
.loader{
  position:fixed;inset:0;z-index:9999;
  background:var(--ink);
  display:flex;align-items:center;justify-content:center;
  transition:opacity .8s ease, visibility .8s ease;
}
.loader-mark{
  font-family:var(--serif);
  color:var(--dark-ink);
  letter-spacing:.5em;
  font-size:14px;
  padding-left:.5em;
  opacity:0;
  animation:loaderFade 1.6s ease forwards;
}
@keyframes loaderFade{
  0%{opacity:0; letter-spacing:1em;}
  60%{opacity:1;}
  100%{opacity:1; letter-spacing:.5em;}
}
.loader.done{opacity:0;visibility:hidden;}

/* ---------- grain overlay ---------- */
.grain{
  position:fixed;inset:0;pointer-events:none;z-index:9998;
  opacity:.035;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- reveal ---------- */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity 1s cubic-bezier(.16,.8,.24,1), transform 1s cubic-bezier(.16,.8,.24,1);
}
.reveal.in{opacity:1;transform:translateY(0);}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:500;
  display:flex;align-items:center;justify-content:space-between;
  padding:28px 5vw;
  transition:padding .4s ease, background .4s ease, border-color .4s ease;
  mix-blend-mode:normal;
}
.site-header.scrolled{
  padding:16px 5vw;
  background:rgba(247,245,241,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.logo{display:flex;align-items:center;gap:14px;line-height:1;}
.logo-full{height:22px;width:auto;display:block;}
.logo-en{font-size:9px;letter-spacing:.22em;color:var(--ink-soft);white-space:nowrap;}
.main-nav{display:flex;gap:44px;}
.main-nav a{
  font-size:11px;letter-spacing:.15em;
  display:flex;align-items:center;gap:8px;
  position:relative;padding-bottom:4px;
}
.main-nav a .num{color:var(--accent);font-size:10px;}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;
  background:var(--ink);transition:width .4s ease;
}
.main-nav a:hover::after{width:100%;}
.menu-btn{display:none;flex-direction:column;gap:5px;width:26px;z-index:600;}
.menu-btn span{display:block;height:1px;background:var(--ink);transition:transform .3s ease, opacity .3s ease;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  min-height:100svh;
  display:flex;flex-direction:column;justify-content:center;
  padding:0 5vw;
  overflow:hidden;
  color:#f2efe8;
}
.hero-photo{position:absolute;inset:0;z-index:0;}
.hero-photo img{width:100%;height:100%;object-fit:cover;object-position:60% 50%;}
.hero-photo-overlay{
  position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(15,14,12,.82) 0%, rgba(15,14,12,.62) 42%, rgba(15,14,12,.32) 70%, rgba(15,14,12,.18) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:900px;}
.hero-eyebrow{
  font-size:11px;letter-spacing:.35em;color:rgba(242,239,232,.75);margin-bottom:28px;
  transition-delay:.1s;
}
.hero-title{
  font-family:var(--serif);
  font-weight:500;
  font-size:clamp(34px,5.6vw,76px);
  line-height:1.45;
  letter-spacing:.03em;
}
.hero-title span{display:block;}
.hero-title span:nth-child(1){transition-delay:.25s;}
.hero-title span:nth-child(2){transition-delay:.4s;}
.hero-lead{
  margin-top:34px;font-size:14px;line-height:2.1;color:rgba(242,239,232,.8);
  transition-delay:.55s;
}
.hero-scroll{
  position:absolute;z-index:2;bottom:44px;left:5vw;display:flex;align-items:center;gap:14px;
}
.scroll-line{width:1px;height:50px;background:#f2efe8;position:relative;overflow:hidden;}
.scroll-line::after{
  content:"";position:absolute;top:-100%;left:0;width:100%;height:100%;
  background:#0f0e0c;animation:scrollDown 2.4s ease-in-out infinite;
}
@keyframes scrollDown{
  0%{top:-100%;} 50%{top:0;} 100%{top:100%;}
}
.scroll-text{font-size:10px;letter-spacing:.3em;writing-mode:vertical-rl;color:rgba(242,239,232,.75);}

/* ---------- intro ---------- */
.intro{padding:140px 5vw;text-align:center;background:var(--bg-alt);}
.intro-inner{max-width:760px;margin:0 auto;font-family:var(--serif);font-size:clamp(16px,1.9vw,21px);line-height:2.3;letter-spacing:.02em;}

/* ---------- section head ---------- */
.section-head{
  display:flex;align-items:baseline;gap:20px;
  padding:0 5vw;margin-bottom:70px;
}
.section-num{font-family:var(--serif);font-size:13px;color:var(--accent);letter-spacing:.1em;}
.section-title{display:flex;align-items:baseline;gap:18px;}
.section-title .jp{font-family:var(--serif);font-size:clamp(24px,3vw,34px);font-weight:600;letter-spacing:.06em;}
.section-title .en{font-size:11px;letter-spacing:.25em;color:var(--ink-soft);}
.section-head.light .section-num,
.section-head.light .en{color:rgba(242,239,232,.55);}

/* ---------- about ---------- */
.about{padding:150px 0 140px;}
.about-grid{
  display:grid;grid-template-columns:.85fr 1.15fr;gap:80px;
  padding:0 5vw;align-items:start;
}
.about-frame{
  aspect-ratio:4/5;background:var(--bg-alt);border:1px solid var(--line);
  overflow:hidden;
}
.about-frame img{width:100%;height:100%;object-fit:cover;}
.about-lead{font-family:var(--serif);font-size:22px;margin-bottom:30px;letter-spacing:.04em;}
.about-text p{margin-bottom:24px;font-size:14.5px;color:var(--ink-soft);max-width:560px;}
.about-facts{
  display:grid;grid-template-columns:1fr 1fr;gap:22px 30px;
  margin-top:44px;padding-top:36px;border-top:1px solid var(--line);max-width:560px;
}
.about-facts div{display:flex;justify-content:space-between;gap:16px;font-size:13px;border-bottom:1px solid var(--line);padding-bottom:10px;}
.about-facts dt{color:var(--ink-soft);letter-spacing:.1em;flex-shrink:0;}
.about-facts dd{font-family:var(--serif);text-align:right;}

.about-pillars{
  display:grid;grid-template-columns:repeat(3,1fr);gap:2px;
  background:var(--line);margin:110px 5vw 0;border:1px solid var(--line);
}
.pillar{background:var(--bg);padding:44px 34px;}
.pillar-num{font-family:var(--serif);font-size:13px;color:var(--accent);}
.pillar h3{font-family:var(--serif);font-size:19px;margin:16px 0 14px;letter-spacing:.05em;}
.pillar p{font-size:13px;color:var(--ink-soft);line-height:1.95;}

/* ---------- works ---------- */
.works{padding:140px 0;background:var(--bg-alt);}
.works-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:2px;
  padding:0 5vw;background:var(--line);
}
.work-card{
  background:var(--bg-alt);display:flex;flex-direction:column;
  transition:transform .5s ease;
}
.work-card:hover{transform:translateY(-6px);}
.work-card.size-lg{grid-column:span 2;grid-row:span 2;}
.work-visual{
  position:relative;
  aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt);
}
.size-lg .work-visual{aspect-ratio:16/11;}
.work-visual img{width:100%;height:100%;object-fit:cover;transition:transform .7s cubic-bezier(.16,.8,.24,1);}
.work-card:hover .work-visual img{transform:scale(1.06);}

.work-card-ba .work-visual img{position:absolute;inset:0;}
.work-card-ba .ba-after{opacity:0;transition:opacity .6s ease;}
.work-card-ba:hover .ba-after{opacity:1;}
.work-card-ba:hover .work-visual img{transform:none;}
.ba-tag{
  position:absolute;top:16px;font-size:10px;letter-spacing:.15em;
  padding:5px 12px;background:rgba(15,14,12,.72);color:#f2efe8;z-index:2;
  transition:opacity .5s ease;
}
.ba-tag-before{left:16px;}
.ba-tag-after{right:16px;opacity:0;}
.work-card-ba:hover .ba-tag-before{opacity:0;}
.work-card-ba:hover .ba-tag-after{opacity:1;}

.work-info{padding:24px 26px 30px;border-top:1px solid var(--line);}
.work-cat{font-size:10px;letter-spacing:.2em;color:var(--accent);}
.work-info h3{font-family:var(--serif);font-size:18px;margin:10px 0 6px;font-weight:600;}
.work-info p{font-size:12px;color:var(--ink-soft);}
.works-more{text-align:center;margin-top:60px;display:flex;flex-direction:column;align-items:center;gap:16px;}
.link-arrow{
  font-size:12px;letter-spacing:.1em;border-bottom:1px solid var(--ink);padding-bottom:4px;
}
.link-arrow-sub{color:var(--ink-soft);border-bottom-color:var(--line);}

/* ---------- service ---------- */
.service{padding:150px 0;}
.service-list{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);border-left:1px solid var(--line);
}
.service-item{
  padding:56px 40px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);position:relative;
}
.service-index{font-family:var(--serif);font-size:34px;color:var(--line);display:block;margin-bottom:18px;}
.service-item h3{font-family:var(--serif);font-size:20px;margin-bottom:14px;letter-spacing:.05em;}
.service-item p{font-size:13.5px;color:var(--ink-soft);max-width:480px;}

/* ---------- support / spec + process ---------- */
.support{background:var(--support-bg);color:var(--dark-ink);padding:140px 0 0;}
.support .section-title .jp{color:var(--dark-ink);}
.support-lead{
  padding:0 5vw;margin:-40px 0 70px;max-width:640px;
  font-size:13.5px;line-height:2.1;color:rgba(242,239,232,.65);
  transition-delay:.1s;
}
.support-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  padding:0 5vw;gap:1px;background:rgba(242,239,232,.15);
  margin-bottom:130px;
}
.support-item{background:var(--support-bg);padding:38px 30px;}
.support-num{
  display:block;font-family:var(--serif);font-size:clamp(26px,2.6vw,34px);
  color:#f2efe8;margin-bottom:16px;letter-spacing:.02em;
}
.support-num em{font-style:normal;font-size:13px;color:var(--accent);margin-left:4px;}
.support-item p{font-size:12.5px;line-height:1.8;color:rgba(242,239,232,.6);}

.process{padding:0 0 140px;}
.process-title{
  padding:0 5vw;margin-bottom:50px;
  font-family:var(--serif);font-size:22px;letter-spacing:.08em;color:#f2efe8;
}
.process-list{
  display:grid;grid-template-columns:repeat(6,1fr);
  padding:0 5vw;
}
.process-list li{
  padding:30px 20px 30px 0;border-top:1px solid rgba(242,239,232,.2);
  display:flex;flex-direction:column;gap:14px;
}
.p-num{font-family:var(--serif);font-size:12px;color:var(--accent);}
.p-label{font-size:12.5px;letter-spacing:.05em;line-height:1.7;color:rgba(242,239,232,.85);}

/* ---------- news ---------- */
.news{padding:150px 0;}
.news-list{max-width:var(--maxw);margin:0 5vw;}
.news-list li{
  display:grid;grid-template-columns:110px 90px 1fr;align-items:center;gap:30px;
  padding:26px 0;border-bottom:1px solid var(--line);
}
.news-list time{font-family:var(--serif);font-size:13px;color:var(--ink-soft);}
.news-tag{font-size:10px;letter-spacing:.15em;color:var(--accent);border:1px solid var(--accent);padding:4px 10px;justify-self:start;}
.news-list p{font-size:14px;}

/* ---------- cta / contact ---------- */
.cta{background:var(--bg-alt);padding:150px 5vw 100px;}
.cta-inner{max-width:820px;margin:0 auto;text-align:center;}
.cta-eyebrow{font-size:11px;letter-spacing:.35em;color:var(--accent);margin-bottom:24px;}
.cta-title{font-family:var(--serif);font-size:clamp(26px,3.6vw,42px);font-weight:600;letter-spacing:.04em;margin-bottom:26px;}
.cta-lead{font-size:14px;color:var(--ink-soft);margin-bottom:70px;}

.contact-form{text-align:left;margin-bottom:100px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px;}
.contact-form label{display:flex;flex-direction:column;gap:10px;font-size:12px;letter-spacing:.05em;color:var(--ink-soft);}
.contact-form label.full{margin-bottom:34px;}
.contact-form em{color:var(--accent);font-style:normal;margin-left:4px;}
.contact-form input,.contact-form select,.contact-form textarea{
  border:none;border-bottom:1px solid var(--line);background:transparent;
  padding:12px 4px;font-size:14px;color:var(--ink);outline:none;
  transition:border-color .3s ease;
}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{border-color:var(--ink);}
.contact-form textarea{resize:vertical;}
.submit-btn{
  display:flex;align-items:center;gap:14px;margin:0 auto;
  padding:18px 44px;border:1px solid var(--ink);font-size:13px;letter-spacing:.2em;
  transition:background .35s ease,color .35s ease;
}
.submit-btn:hover{background:var(--ink);color:var(--bg);}
.form-note{text-align:center;margin-top:20px;font-size:12.5px;color:var(--accent);min-height:1em;}

.contact-info{
  display:grid;grid-template-columns:repeat(4,1fr);gap:40px;
  border-top:1px solid var(--line);padding-top:50px;text-align:left;
}
.contact-info h4{font-size:11px;letter-spacing:.15em;color:var(--accent);margin-bottom:14px;}
.contact-info p{font-size:13px;color:var(--ink-soft);line-height:1.9;}
.contact-info a{border-bottom:1px solid var(--ink-soft);}
.sns-link{display:inline-flex;align-items:center;gap:8px;border-bottom:1px solid var(--ink-soft);}

.map-embed{
  margin-top:60px;border:1px solid var(--line);overflow:hidden;
  filter:grayscale(1) contrast(1.05) brightness(1.02);
  transition:filter .5s ease;
}
.map-embed:hover{filter:grayscale(.15) contrast(1.02) brightness(1);}
.map-embed iframe{width:100%;height:420px;border:0;display:block;}

/* ---------- footer ---------- */
.site-footer{background:var(--support-bg);color:var(--dark-ink);padding:60px 5vw 34px;}
.footer-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px;}
.footer-logo{display:block;}
.footer-logo img{height:42px;width:auto;display:block;}
.footer-right{display:flex;align-items:center;gap:28px;}
.footer-sns{display:flex;align-items:center;color:rgba(242,239,232,.75);transition:color .3s ease;}
.footer-sns:hover{color:#f2efe8;}
.to-top{display:flex;align-items:center;gap:10px;font-size:10px;letter-spacing:.2em;color:rgba(242,239,232,.7);}
.footer-copy{font-size:11px;color:rgba(242,239,232,.4);letter-spacing:.05em;}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .about-grid{grid-template-columns:1fr;gap:50px;}
  .about-frame{max-width:400px;}
  .about-pillars{grid-template-columns:1fr;margin-top:80px;}
  .works-grid{grid-template-columns:repeat(2,1fr);}
  .work-card.size-lg{grid-column:span 2;}
  .service-list{grid-template-columns:1fr;}
  .support-grid{grid-template-columns:repeat(2,1fr);}
  .process-list{grid-template-columns:repeat(3,1fr);}
  .contact-info{grid-template-columns:1fr;gap:26px;}
}

@media (max-width:720px){
  .map-embed iframe{height:300px;}
  .main-nav{
    position:fixed;inset:0;z-index:550;
    background:var(--ink);color:var(--dark-ink);
    display:flex;flex-direction:column;align-items:flex-start;justify-content:center;
    gap:30px;padding:0 10vw;
    transform:translateX(100%);transition:transform .5s cubic-bezier(.7,0,.2,1);
  }
  .main-nav.open{transform:translateX(0);}
  .main-nav a{font-size:16px;}
  .menu-btn{display:flex;}
  .menu-btn.open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
  .menu-btn.open span:nth-child(2){opacity:0;}
  .menu-btn.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
  .menu-btn.open span{background:var(--ink);}
  .site-header.menu-open{background:transparent;}

  .works-grid{grid-template-columns:1fr;}
  .work-card.size-lg{grid-column:span 1;}
  .support-grid{grid-template-columns:1fr;}
  .process-list{grid-template-columns:repeat(2,1fr);}
  .form-row{grid-template-columns:1fr;}
  .news-list li{grid-template-columns:1fr;gap:8px;text-align:left;}
}