/* ================================
   筑紫建築 — Shared Stylesheet
   ================================ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --navy:#0d1e3b; --navy2:#162d52; --blue:#1e4d8c;
  --gold:#b8860b; --gold2:#d4a820;
  --white:#fff; --offwhite:#f8f9fc; --gbg:#f1f5f9;
  --gline:#e2e8f0; --gtxt:#64748b; --text:#1e2d45;
}
body{font-family:'Yu Gothic','YuGothic','Hiragino Kaku Gothic ProN','Hiragino Sans','Meiryo','Microsoft YaHei','PingFang SC',Arial,sans-serif;color:var(--text);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased;}

/* ---- NAV ---- */
#nav{position:fixed;inset:0 0 auto 0;z-index:200;padding:0;background:linear-gradient(rgba(13,30,59,0.65),transparent);transition:background .35s,box-shadow .35s;}
#nav.scrolled,#nav.solid{background:var(--navy);box-shadow:0 2px 30px rgba(0,0,0,.35)}
.nav-inner{display:flex;align-items:center;height:72px;width:100%;padding:0 16px;gap:16px;}
.nav-brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0}
.brand-sep{width:1px;height:24px;background:rgba(255,255,255,.3)}
.brand-sub{font-size:13px;color:rgba(255,255,255,.85);letter-spacing:.05em}
.nav-links{display:flex;list-style:none;gap:2px;margin-left:auto}
.nav-links > li{position:relative}
.nav-links > li > a{display:flex;align-items:center;gap:4px;color:rgba(255,255,255,.88);text-decoration:none;font-size:18px;letter-spacing:.04em;padding:8px 16px;border-radius:2px;transition:color .2s;white-space:nowrap}
.nav-links > li > a:hover{color:var(--gold2)}
.dd-caret{font-size:9px;opacity:.55;display:inline-block;transition:transform .25s;line-height:1}

/* DROPDOWN */
.dd-menu{display:none;position:absolute;top:100%;left:0;background:var(--navy2);min-width:196px;box-shadow:0 8px 28px rgba(0,0,0,.55);border-top:2px solid var(--gold);border-radius:0 0 4px 4px;z-index:300;padding:4px 0;}
.has-dd:hover .dd-menu{display:block}
.has-dd:hover .dd-caret{transform:rotate(180deg)}
.dd-menu li{display:block}
.dd-menu a{display:block;padding:10px 18px;font-size:13px;color:rgba(255,255,255,.75);border-bottom:1px solid rgba(255,255,255,.05);text-decoration:none;transition:background .15s,color .15s,padding-left .15s;white-space:nowrap}
.dd-menu a:hover{background:rgba(255,255,255,.07);color:var(--gold2);padding-left:22px}
.dd-menu li:last-child a{border-bottom:none}

.lang-toggle{display:flex;align-items:center;gap:6px;margin-left:8px;flex-shrink:0}
.lsep{color:rgba(255,255,255,.25);font-size:11px}
.lbtn{background:transparent;border:1px solid rgba(255,255,255,.3);color:rgba(255,255,255,.6);padding:3px 9px;font-size:11.5px;cursor:pointer;border-radius:2px;transition:all .2s;font-family:inherit;letter-spacing:.04em;}
.lbtn:hover{color:#fff;border-color:rgba(255,255,255,.6)}
.lbtn.on{background:var(--gold);border-color:var(--gold);color:#fff;font-weight:600}
.hbg{display:none;background:transparent;border:none;color:#fff;font-size:22px;cursor:pointer;padding:4px;margin-left:4px;}

/* ---- HERO (index only) ---- */
.hero{position:relative;height:88vh;min-height:520px;max-height:860px;overflow:hidden}
.hero-slides{position:absolute;inset:0}
.hslide{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.4s ease;}
.hslide.on{opacity:1}
.hero-ov{position:absolute;inset:0;background:linear-gradient(135deg,rgba(13,30,59,.7) 0%,rgba(13,30,59,.35) 55%,rgba(13,30,59,.6) 100%);}
.hero-cnt{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;color:#fff;padding:100px 24px 60px;}
.hero-eye{font-size:11px;letter-spacing:.35em;color:var(--gold2);text-transform:uppercase;margin-bottom:22px;font-family:'Helvetica Neue',Arial,sans-serif;}
.hero-ttl{font-size:clamp(22px,4.2vw,44px);font-weight:700;line-height:1.35;text-shadow:0 2px 12px rgba(0,0,0,.4);letter-spacing:.08em;}
.hero-bar{width:56px;height:2px;background:var(--gold2);margin:20px auto}
.hero-en{font-size:clamp(10px,1.5vw,13px);letter-spacing:.14em;color:rgba(255,255,255,.6);font-family:'Helvetica Neue',Arial,sans-serif;font-weight:300;margin-bottom:32px;}
.hero-cta{display:inline-block;padding:11px 30px;border:1px solid rgba(255,255,255,.5);color:#fff;text-decoration:none;font-size:12px;letter-spacing:.15em;transition:background .3s,border-color .3s;margin-bottom:36px;}
.hero-cta:hover{background:var(--gold);border-color:var(--gold)}
.hdots{display:flex;justify-content:center;gap:8px}
.hdot{width:28px;height:2px;background:rgba(255,255,255,.3);border:none;cursor:pointer;transition:background .3s,width .3s;padding:0;}
.hdot.on{background:var(--gold2);width:42px}

/* ---- PAGE HERO (sub-pages) ---- */
.page-hero{position:relative;padding:140px 20px 72px;background:var(--navy);text-align:center;color:#fff;overflow:hidden}
.page-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.2;z-index:0;pointer-events:none}
.page-hero-inner{position:relative;z-index:1}
.page-hero-cat{font-size:10.5px;letter-spacing:.3em;color:var(--gold2);text-transform:uppercase;margin-bottom:14px;font-family:'Helvetica Neue',Arial,sans-serif}
.page-hero h1{font-size:clamp(20px,3.5vw,36px);font-weight:700;letter-spacing:.08em;line-height:1.3}
.page-hero .sbar{margin:14px auto 0}
.breadcrumb{position:relative;z-index:1;margin-top:20px;font-size:11.5px;color:rgba(255,255,255,.45);letter-spacing:.04em}
.breadcrumb a{color:rgba(255,255,255,.6);text-decoration:none;transition:color .2s}
.breadcrumb a:hover{color:var(--gold2)}
.breadcrumb span{margin:0 6px;opacity:.35}

/* ---- STATS ---- */
.stats{background:var(--navy);display:flex;justify-content:center;flex-wrap:wrap}
.stat{padding:26px 44px;text-align:center;border-right:1px solid rgba(255,255,255,.1)}
.stat:last-child{border-right:none}
.snum{font-size:28px;font-weight:800;color:var(--gold2);letter-spacing:.04em;font-family:'Helvetica Neue',Arial,sans-serif;line-height:1}
.slbl{font-size:11px;color:rgba(255,255,255,.45);letter-spacing:.12em;margin-top:6px}

/* ---- SECTION BASE ---- */
.sec{padding:86px 20px}
.wrap{max-width:1180px;margin:0 auto}
.shd{text-align:center;margin-bottom:52px}
.shd.L{text-align:left}
.enlbl{font-size:10.5px;letter-spacing:.28em;color:var(--gold);text-transform:uppercase;margin-bottom:8px;font-family:'Helvetica Neue',Arial,sans-serif}
.shd h2{font-size:clamp(20px,2.6vw,30px);font-weight:700;color:var(--navy);letter-spacing:.06em}
.sbar{width:38px;height:3px;background:var(--gold);margin:12px auto 0}
.shd.L .sbar{margin:12px 0 0}

/* ---- SERVICES ---- */
.sec-svc{background:var(--offwhite)}
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.svc{background:#fff;padding:38px 26px 30px;border-radius:3px;box-shadow:0 1px 6px rgba(0,0,0,.05),0 3px 14px rgba(0,0,0,.04);border-top:3px solid var(--gline);transition:box-shadow .3s,transform .3s,border-color .3s;}
.svc:hover{box-shadow:0 4px 20px rgba(0,0,0,.1),0 8px 32px rgba(0,0,0,.06);transform:translateY(-3px);border-top-color:var(--gold)}
.svnum{font-size:36px;font-weight:900;color:var(--gold2);opacity:.7;letter-spacing:-.02em;line-height:1;margin-bottom:18px;font-family:'Helvetica Neue',Arial,sans-serif}
.svc h3{font-size:14.5px;font-weight:700;color:var(--navy);letter-spacing:.06em;margin-bottom:12px}
.svc p{font-size:12.5px;color:var(--gtxt);line-height:1.85}
.svc-sub{font-size:11px;color:var(--gold);font-family:'Helvetica Neue',Arial,sans-serif;letter-spacing:.1em;margin-bottom:8px;display:block}

/* ---- ABOUT ---- */
.sec-ab{background:#fff}
.ab-grid{display:grid;grid-template-columns:1fr 1fr;gap:68px;align-items:start}
.ab-text p{font-size:13.5px;line-height:1.9;color:var(--gtxt);margin-bottom:14px}
.ab-specs{margin-top:24px;border:1px solid var(--gline);border-radius:3px;overflow:hidden}
.ab-spec-row{display:grid;grid-template-columns:120px 1fr;font-size:12.5px;border-bottom:1px solid var(--gline);}
.ab-spec-row:last-child{border-bottom:none}
.ab-spec-key{background:var(--gbg);padding:10px 14px;color:var(--navy);font-weight:600;letter-spacing:.04em}
.ab-spec-val{padding:10px 14px;color:var(--gtxt)}
.ab-img-wrap{position:relative}
.ab-img-wrap img{width:100%;height:320px;object-fit:cover;display:block;box-shadow:0 8px 32px rgba(0,0,0,.15)}
.ab-img-wrap img+img{margin-top:12px;height:200px}
.ab-badge{background:var(--navy);color:#fff;padding:12px 18px;font-size:12px;line-height:1.6;margin-top:12px}
.ab-badge strong{display:block;font-size:20px;font-weight:800;color:var(--gold2);letter-spacing:.04em;font-family:'Helvetica Neue',Arial,sans-serif}

/* ---- PROJECTS GRID (homepage) ---- */
.sec-pj{background:var(--navy)}
.sec-pj .shd h2{color:#fff}
.sec-pj .sbar{background:var(--gold2)}
.sec-pj .enlbl{color:var(--gold2)}
.pj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.pj{position:relative;overflow:hidden;cursor:pointer;text-decoration:none;display:block}
.pj img{width:100%;height:220px;object-fit:cover;display:block;filter:brightness(.82);transition:transform .6s cubic-bezier(.25,.46,.45,.94),filter .4s}
.pj:hover img{transform:scale(1.06);filter:brightness(.95)}
.pj-ov{position:absolute;inset:0;background:linear-gradient(transparent 38%,rgba(9,18,36,.92) 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:18px 16px}
.pj-n{font-size:9.5px;letter-spacing:.22em;color:var(--gold2);margin-bottom:4px;font-family:'Helvetica Neue',Arial,sans-serif}
.pj-t{font-size:14.5px;font-weight:700;color:#fff;letter-spacing:.05em;margin-bottom:4px}
.pj-d{font-size:11.5px;color:rgba(255,255,255,.6);line-height:1.5;max-height:0;overflow:hidden;transition:max-height .3s}
.pj:hover .pj-d{max-height:60px}
.pj-more{font-size:10px;letter-spacing:.12em;color:var(--gold2);margin-top:6px;opacity:0;transition:opacity .3s}
.pj:hover .pj-more{opacity:1}

/* ACHIEVEMENT LIST */
.achv-toggle{display:block;margin:36px auto 0;padding:12px 32px;background:transparent;border:1px solid rgba(255,255,255,.3);color:rgba(255,255,255,.7);font-size:12px;letter-spacing:.15em;cursor:pointer;font-family:inherit;transition:all .2s;}
.achv-toggle:hover{background:rgba(255,255,255,.08);color:#fff}
.achv-panel{max-height:0;overflow:hidden;transition:max-height .6s ease;margin-top:0;}
.achv-panel.open{max-height:3000px;margin-top:32px}
.achv-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.achv-col h4{font-size:12px;letter-spacing:.2em;color:var(--gold2);margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid rgba(255,255,255,.15);}
.achv-col ul{list-style:none;padding:0}
.achv-col li{font-size:11.5px;color:rgba(255,255,255,.6);line-height:1.7;padding:3px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.achv-col li::before{content:'＊ ';color:var(--gold2);opacity:.7}

/* ---- PROJECT DETAIL PAGES ---- */
.proj-intro{max-width:760px;margin:0 auto 52px;text-align:center}
.proj-intro p{font-size:14px;line-height:1.9;color:var(--gtxt)}
.proj-content{display:grid;grid-template-columns:1.1fr 0.9fr;gap:52px;align-items:start}
.proj-list-title{font-size:11px;letter-spacing:.28em;color:var(--gold);text-transform:uppercase;margin-bottom:18px;padding-bottom:10px;border-bottom:2px solid var(--gline);font-family:'Helvetica Neue',Arial,sans-serif}
.proj-items{list-style:none;padding:0}
.proj-items li{font-size:12.5px;color:var(--gtxt);padding:9px 0 9px 18px;border-bottom:1px solid var(--gline);line-height:1.65;position:relative}
.proj-items li::before{content:'▸';color:var(--gold);position:absolute;left:0;top:10px;font-size:11px}
.proj-imgs img{width:100%;display:block;object-fit:cover;border-radius:2px;box-shadow:0 4px 20px rgba(0,0,0,.12)}
.proj-imgs img+img{margin-top:12px}
.proj-cta-bar{background:var(--navy2);padding:52px 20px;text-align:center}
.proj-cta-bar p{color:rgba(255,255,255,.65);font-size:13.5px;margin-bottom:20px;letter-spacing:.03em}
.btn-cta{display:inline-block;padding:12px 34px;background:var(--gold);color:#fff;text-decoration:none;font-size:12.5px;letter-spacing:.1em;border-radius:2px;transition:background .2s}
.btn-cta:hover{background:var(--gold2)}
.btn-outline{display:inline-block;padding:11px 28px;border:1px solid rgba(255,255,255,.35);color:rgba(255,255,255,.75);text-decoration:none;font-size:12.5px;letter-spacing:.1em;border-radius:2px;transition:all .2s;margin-left:14px}
.btn-outline:hover{border-color:var(--gold2);color:var(--gold2)}

/* ---- ORG CHART ---- */
.sec-org{background:#fff}
.org-chart{overflow-x:auto;padding:10px 0;-webkit-overflow-scrolling:touch}
.org-chart ul{position:relative;display:flex;flex-wrap:nowrap;justify-content:center;list-style:none;margin:0;padding:20px 5px 0}
.org-chart li{list-style:none;padding:20px 8px 0;position:relative;text-align:center;display:flex;flex-direction:column;align-items:center}
.org-chart li::before,.org-chart li::after{content:'';position:absolute;top:0;right:50%;border-top:2px solid var(--navy);width:50%;height:20px}
.org-chart li::after{right:auto;left:50%;border-left:2px solid var(--navy)}
.org-chart li:only-child::after,.org-chart li:only-child::before{display:none}
.org-chart li:only-child{padding-top:0}
.org-chart li:first-child::before,.org-chart li:last-child::after{border:0 none}
.org-chart li:last-child::before{border-right:2px solid var(--navy);border-radius:0 4px 0 0}
.org-chart li:first-child::after{border-radius:4px 0 0 0}
.org-chart ul ul::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);border-left:2px solid var(--navy);width:0;height:20px}
.ob{background:#fff;border:2px solid var(--navy);border-radius:4px;padding:12px 16px;min-width:118px;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.ob.ceo{background:var(--navy);border-color:var(--navy);min-width:200px;padding:18px 28px}
.ob.ceo .ob-role{font-size:10.5px;letter-spacing:.18em;color:var(--gold2);text-transform:uppercase}
.ob.ceo .ob-name{font-size:20px;font-weight:700;color:#fff;margin-top:6px;letter-spacing:.06em}
.ob.dept{border-color:var(--blue);min-width:144px}
.ob.dept .ob-role{font-size:13px;font-weight:700;color:var(--navy)}
.ob.dept .ob-desc{font-size:11px;color:var(--gtxt);margin-top:5px;line-height:1.5}
.ob.sub{background:var(--gbg);min-width:120px}
.ob.sub .ob-role{font-size:12.5px;font-weight:700;color:var(--navy)}
.ob.sub .ob-desc{font-size:10.5px;color:var(--gtxt);margin-top:4px;line-height:1.45}

/* ---- SOFTWARE ---- */
.sec-sw{background:var(--offwhite)}
.sw-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.sw-card{background:#fff;padding:24px;border-radius:3px;box-shadow:0 1px 6px rgba(0,0,0,.05)}
.sw-card h4{font-size:13px;font-weight:700;color:var(--navy);margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--gline);letter-spacing:.05em}
.sw-card ul{list-style:none;padding:0}
.sw-card li{font-size:11.5px;color:var(--gtxt);padding:3px 0;border-bottom:1px solid var(--gline);}
.sw-card li::before{content:'› ';color:var(--gold)}

/* ---- CONTACT ---- */
.sec-ct{background:var(--gbg)}
.ct-single{max-width:680px;margin:0 auto}
.ct-card{background:#fff;padding:36px 40px;border-radius:3px;border-left:4px solid var(--navy);box-shadow:0 1px 6px rgba(0,0,0,.05)}
.ct-card h3{font-size:16px;font-weight:700;color:var(--navy);margin-bottom:24px;padding-bottom:14px;border-bottom:1px solid var(--gline);letter-spacing:.05em}
.ct-grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 32px}
.crow{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px;font-size:13px;color:var(--gtxt);line-height:1.5}
.cico{color:var(--gold);flex-shrink:0;width:16px;font-size:12px;margin-top:1px}
.crow a{color:var(--blue);text-decoration:none}
.crow a:hover{text-decoration:underline}

/* ---- FOOTER ---- */
footer{background:#06111e;color:rgba(255,255,255,.45);text-align:center;padding:44px 20px}
.ft-brand{font-size:15px;font-weight:600;color:rgba(255,255,255,.8);letter-spacing:.05em;margin-bottom:6px}
.ft-en{font-size:11px;letter-spacing:.12em;color:rgba(255,255,255,.3);margin-bottom:20px}
.ft-links{display:flex;justify-content:center;gap:18px;margin-bottom:18px;flex-wrap:wrap}
.ft-links a{font-size:11px;color:rgba(255,255,255,.38);text-decoration:none;letter-spacing:.05em;transition:color .2s}
.ft-links a:hover{color:var(--gold2)}
.ft-copy{font-size:10px;color:rgba(255,255,255,.2);letter-spacing:.08em}

/* ---- RESPONSIVE ---- */
@media(max-width:960px){
  .nav-links{display:none}
  .nav-links.open{
    display:flex;flex-direction:column;
    position:absolute;top:72px;left:0;right:0;
    background:var(--navy);padding:10px 20px 16px;gap:0;
    box-shadow:0 8px 24px rgba(0,0,0,.4);
    max-height:calc(100vh - 66px);overflow-y:auto;
  }
  .nav-links.open > li > a{padding:11px 4px;border-bottom:1px solid rgba(255,255,255,.06);font-size:13px}
  .nav-links.open .dd-menu{
    display:none;position:static;box-shadow:none;border-top:none;
    padding:2px 0 6px 12px;background:rgba(255,255,255,.04);
    border-radius:0;margin:0;
  }
  .nav-links.open .has-dd.dd-open .dd-menu{display:block}
  .nav-links.open .has-dd.dd-open .dd-caret{transform:rotate(180deg)}
  .hbg{display:block}
  .lang-toggle{margin-left:0}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .ab-grid{grid-template-columns:1fr;gap:36px}
  .ab-img-wrap{display:none}
  .pj-grid{grid-template-columns:repeat(2,1fr)}
  .achv-cols{grid-template-columns:1fr 1fr}
  .sw-grid{grid-template-columns:1fr 1fr}
  .stat{padding:20px 28px}
  .ct-grid2{grid-template-columns:1fr}
  .proj-content{grid-template-columns:1fr}
}
@media(max-width:600px){
  .svc-grid{grid-template-columns:1fr}
  .pj-grid{grid-template-columns:1fr}
  .achv-cols{grid-template-columns:1fr}
  .sw-grid{grid-template-columns:1fr}
  .sec{padding:58px 16px}
  .hero-ttl{font-size:22px}
  .stat{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);flex:0 0 50%}
  .ct-card{padding:24px 20px}
  .page-hero{padding:110px 16px 52px}
  .btn-outline{margin-left:0;margin-top:10px;display:block;width:fit-content;margin:10px auto 0}
}