:root{
  --ink:#1a1d21;
  --charcoal:#23272d;
  --charcoal-l:#2e333a;
  --steel:#2e5a8f;
  --steel-d:#234870;
  --steel-l:#5a82b0;
  --yellow:#f2b733;
  --yellow-d:#d99e1a;
  --paper:#f4f5f7;
  --paper2:#fafbfc;
  --gray:#6b727b;
  --gray-l:#9aa1ab;
  --line:#e0e3e8;
  --line-d:#3a3f47;
  --display:'Oswald',sans-serif;
  --jp:'Zen Kaku Gothic New',sans-serif;
  --jpd:'Shippori Mincho',serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--jp);color:var(--ink);line-height:1.9;background:#fff;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.container{max-width:1160px;margin:0 auto;padding:0 28px}

header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(26,29,33,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line-d);transition:all .3s}
header.scrolled{background:rgba(26,29,33,.98);box-shadow:0 4px 20px rgba(0,0,0,.3)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{display:flex;align-items:center;gap:12px;color:#fff}
.logo .mark{width:42px;height:42px;background:var(--steel);display:flex;align-items:center;justify-content:center;font-family:var(--display);font-weight:700;font-size:1.2rem;color:#fff;clip-path:polygon(0 0,100% 0,100% 75%,75% 100%,0 100%)}
.logo .name{font-family:var(--jpd);font-weight:700;font-size:1.3rem;letter-spacing:.08em}
.logo .name small{display:block;font-family:var(--display);font-size:.56rem;letter-spacing:.28em;color:var(--yellow);font-weight:500;margin-top:1px}
.menu{display:flex;align-items:center;gap:30px;list-style:none;font-size:.9rem;font-weight:500}
.menu a{position:relative;padding:4px 0;color:rgba(255,255,255,.85);transition:color .2s}
.menu a::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:2px;background:var(--yellow);transition:width .3s}
.menu a:hover{color:#fff}
.menu a:hover::after{width:100%}
.nav-cta{background:var(--yellow);color:var(--ink) !important;padding:11px 24px;font-size:.86rem;font-weight:700;transition:all .25s;clip-path:polygon(0 0,100% 0,100% 70%,92% 100%,0 100%)}
.nav-cta::after{display:none !important}
.nav-cta:hover{background:var(--yellow-d)}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;z-index:120}
.burger span{width:26px;height:2px;background:#fff;border-radius:2px;transition:transform .3s,opacity .2s}

section{padding:110px 0}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);font-size:.84rem;letter-spacing:.25em;color:var(--steel);font-weight:600;margin-bottom:16px;text-transform:uppercase}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--yellow)}
.eyebrow.center{justify-content:center}
.sec-title{font-family:var(--jpd);font-size:clamp(1.9rem,4vw,2.7rem);font-weight:700;color:var(--ink);line-height:1.5;letter-spacing:.04em}
.sec-title.light{color:#fff}
.sec-head{margin-bottom:58px}
.sec-head.center{text-align:center}
.lead{margin-top:20px;color:var(--gray);font-size:1.02rem;line-height:2.1}
.lead.light{color:rgba(255,255,255,.75)}

.btn{display:inline-flex;align-items:center;gap:12px;padding:17px 40px;font-weight:700;font-size:.95rem;transition:all .3s;font-family:var(--jp);clip-path:polygon(0 0,100% 0,100% 72%,94% 100%,0 100%)}
.btn-yellow{background:var(--yellow);color:var(--ink)}
.btn-yellow:hover{background:var(--yellow-d);transform:translateY(-2px)}
.btn-steel{background:var(--steel);color:#fff}
.btn-steel:hover{background:var(--steel-d);transform:translateY(-2px)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.5);color:#fff;clip-path:none;border-radius:0}
.btn-ghost:hover{background:#fff;color:var(--ink)}

/* page hero */
.page-hero{position:relative;height:48vh;min-height:330px;display:flex;align-items:center;overflow:hidden;margin-top:0}
.page-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(26,29,33,.92),rgba(26,29,33,.65));z-index:2}
.page-hero::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:5px;background:var(--yellow);z-index:3}
.page-hero .container{position:relative;z-index:3;color:#fff}
.page-hero h1{font-family:var(--jpd);font-size:clamp(2rem,5vw,3rem);font-weight:700;margin-bottom:12px;letter-spacing:.06em}
.breadcrumb{font-size:.82rem;color:rgba(255,255,255,.7)}
.breadcrumb a:hover{color:var(--yellow)}

/* CTA */
.cta{position:relative;overflow:hidden;text-align:center;padding:120px 0}
.cta img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.cta::before{content:"";position:absolute;inset:0;background:linear-gradient(rgba(26,29,33,.92),rgba(35,40,46,.9));z-index:2}
.cta .container{position:relative;z-index:3}
.cta h2{font-family:var(--jpd);font-size:clamp(1.8rem,4vw,2.6rem);font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.05em;line-height:1.5}
.cta p{color:rgba(255,255,255,.78);margin-bottom:38px;font-size:1.02rem}

footer{background:#111418;color:rgba(255,255,255,.55);padding:74px 0 30px;font-size:.9rem}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:46px;margin-bottom:52px}
.foot-logo{font-family:var(--jpd);font-size:1.4rem;color:#fff;margin-bottom:16px;font-weight:700;letter-spacing:.06em}
.foot-desc{line-height:2;font-size:.86rem}
.foot-col h5{color:#fff;font-size:.92rem;margin-bottom:18px;font-family:var(--display);letter-spacing:.1em;text-transform:uppercase}
.foot-col ul{list-style:none}
.foot-col li{margin-bottom:12px}
.foot-col a{color:rgba(255,255,255,.55);transition:color .2s}
.foot-col a:hover{color:var(--yellow)}
.foot-bottom{border-top:1px solid var(--line-d);padding-top:24px;text-align:center;font-size:.78rem;color:rgba(255,255,255,.35)}
.demo-bar{background:var(--steel-d);color:#fff;text-align:center;padding:10px;font-size:.8rem;letter-spacing:.04em}
.demo-bar strong{color:var(--yellow)}

.reveal{opacity:0;transform:translateY(32px);transition:all .9s cubic-bezier(.2,.8,.2,1)}
.reveal.show{opacity:1;transform:none}

/* ===== トップページ ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;background:var(--ink)}
.hero-bg{position:absolute;inset:0;z-index:1}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.45}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(26,29,33,.9) 0%,rgba(26,29,33,.55) 60%,rgba(26,29,33,.3) 100%)}
.hero-inner{position:relative;z-index:2;color:#fff;padding:140px 0 90px;width:100%}
.hero .tag{display:inline-flex;align-items:center;gap:12px;font-family:var(--display);font-size:.84rem;letter-spacing:.22em;color:var(--yellow);margin-bottom:26px;text-transform:uppercase}
.hero .tag::before{content:"";width:36px;height:2px;background:var(--yellow)}
.hero h1{font-family:var(--jpd);font-size:clamp(2.4rem,6vw,4.5rem);font-weight:700;line-height:1.4;letter-spacing:.04em;text-shadow:0 2px 24px rgba(0,0,0,.4)}
.hero p{margin-top:28px;font-size:1.08rem;max-width:520px;line-height:2.1;color:rgba(255,255,255,.85)}
.hero-btns{margin-top:42px;display:flex;gap:16px;flex-wrap:wrap}
.scroll-hint{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);z-index:3;writing-mode:vertical-rl;font-family:var(--display);font-size:.68rem;letter-spacing:.3em;color:rgba(255,255,255,.6);display:flex;align-items:center;gap:14px}
.scroll-hint::after{content:"";width:1px;height:52px;background:linear-gradient(var(--yellow),transparent);animation:scrolld 1.8s infinite}
@keyframes scrolld{0%{opacity:0;transform:scaleY(0);transform-origin:top}50%{opacity:1}100%{opacity:0;transform:scaleY(1);transform-origin:bottom}}

/* stats（実績数値＝主役） */
.stats{background:var(--charcoal);position:relative;margin-top:-1px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{text-align:center;padding:20px;border-right:1px solid var(--line-d)}
.stat:last-child{border-right:none}
.stat .n{font-family:var(--display);font-size:3.4rem;color:var(--yellow);font-weight:700;line-height:1}
.stat .n small{font-size:1.3rem;color:#fff}
.stat .l{margin-top:12px;font-size:.86rem;color:rgba(255,255,255,.7);letter-spacing:.05em}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.about-img{position:relative}
.about-img img{width:100%;object-fit:cover}
.about-img::before{content:"";position:absolute;top:-16px;left:-16px;width:90px;height:90px;border-top:4px solid var(--yellow);border-left:4px solid var(--yellow);z-index:2}
.about-text h2{font-family:var(--jpd);font-size:clamp(1.7rem,3.5vw,2.3rem);color:var(--ink);line-height:1.6;margin-bottom:26px;font-weight:700}
.about-text p{color:var(--gray);margin-bottom:18px;line-height:2.1}

/* business（事業領域） */
.biz{background:var(--paper)}
.biz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);background:#fff}
.biz-card{padding:44px 36px;border-right:1px solid var(--line);transition:all .3s;position:relative}
.biz-card:last-child{border-right:none}
.biz-card:hover{background:var(--charcoal)}
.biz-card:hover *{color:#fff !important}
.biz-card .no{font-family:var(--display);font-size:.9rem;color:var(--steel);font-weight:600;letter-spacing:.1em}
.biz-card h3{font-family:var(--jpd);font-size:1.4rem;color:var(--ink);margin:14px 0 16px;font-weight:700}
.biz-card p{font-size:.9rem;color:var(--gray);line-height:1.9}
.biz-card .bar{width:40px;height:3px;background:var(--yellow);margin-top:20px;transition:width .3s}
.biz-card:hover .bar{width:70px}

/* works */
.works-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.work-card{position:relative;overflow:hidden;aspect-ratio:4/3;cursor:pointer}
.work-card img{width:100%;height:100%;object-fit:cover;transition:transform .8s}
.work-card:hover img{transform:scale(1.08)}
.work-card .overlay{position:absolute;inset:0;background:linear-gradient(transparent 40%,rgba(26,29,33,.92));display:flex;flex-direction:column;justify-content:flex-end;padding:26px}
.work-card .cat{font-family:var(--display);font-size:.72rem;letter-spacing:.15em;color:var(--yellow);margin-bottom:8px;text-transform:uppercase}
.work-card h4{font-family:var(--jpd);font-size:1.15rem;color:#fff;font-weight:700}
.center-btn{text-align:center;margin-top:54px}

/* qualifications（保有資格＝信頼の証） */
.qual{background:var(--charcoal);color:#fff}
.qual-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:50px;align-items:center}
.qual-list{list-style:none}
.qual-list li{display:flex;align-items:center;gap:16px;padding:18px 0;border-bottom:1px solid var(--line-d);font-size:1rem}
.qual-list li::before{content:"✓";width:30px;height:30px;background:var(--steel);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:.9rem}
.qual-list li .cnt{margin-left:auto;font-family:var(--display);font-size:1.4rem;color:var(--yellow);font-weight:700}

/* clients（取引先） */
.clients-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.client{background:#fff;padding:34px 20px;text-align:center;font-family:var(--jpd);font-size:.96rem;color:var(--gray);display:flex;align-items:center;justify-content:center;min-height:90px}

/* recruit highlight */
.rec-cta{background:linear-gradient(120deg,var(--steel-d),var(--steel));color:#fff;position:relative;overflow:hidden}
.rec-cta::after{content:"";position:absolute;right:-60px;top:-60px;width:300px;height:300px;background:rgba(242,183,51,.12);border-radius:50%}
.rec-cta-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:50px;align-items:center;position:relative;z-index:2}
.rec-cta h2{font-family:var(--jpd);font-size:clamp(1.7rem,3.5vw,2.4rem);font-weight:700;margin-bottom:18px;line-height:1.5}
.rec-cta p{color:rgba(255,255,255,.85);margin-bottom:24px}

/* page commons */
.biz-detail{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;margin-bottom:90px}
.biz-detail:last-child{margin-bottom:0}
.biz-detail.rev{direction:rtl}
.biz-detail.rev>*{direction:ltr}
.biz-detail .img img{width:100%;object-fit:cover}
.biz-detail .txt .no{font-family:var(--display);font-size:.9rem;color:var(--steel);letter-spacing:.15em;font-weight:600}
.biz-detail .txt h3{font-family:var(--jpd);font-size:1.7rem;color:var(--ink);margin:10px 0 18px;font-weight:700}
.biz-detail .txt p{color:var(--gray);margin-bottom:20px;line-height:2.1}
.biz-detail .txt ul{list-style:none;display:flex;flex-wrap:wrap;gap:10px}
.biz-detail .txt li{background:var(--paper);color:var(--steel-d);font-size:.84rem;padding:7px 18px;border:1px solid var(--line);font-weight:500}

.filter-bar{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:50px}
.filter-bar button{border:1px solid var(--line);background:#fff;padding:9px 24px;font-family:var(--display);font-size:.86rem;letter-spacing:.05em;color:var(--gray);cursor:pointer;transition:all .25s;text-transform:uppercase}
.filter-bar button.active,.filter-bar button:hover{background:var(--charcoal);color:#fff;border-color:var(--charcoal)}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.gal-card{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);transition:all .3s}
.gal-card:hover{box-shadow:0 16px 40px rgba(26,29,33,.14);transform:translateY(-5px)}
.gal-card .imgwrap{aspect-ratio:4/3;overflow:hidden}
.gal-card img{width:100%;height:100%;object-fit:cover;transition:transform .8s}
.gal-card:hover img{transform:scale(1.07)}
.gal-card .body{padding:22px 24px}
.gal-card .cat{font-family:var(--display);font-size:.72rem;letter-spacing:.1em;color:var(--steel);margin-bottom:8px;display:block;text-transform:uppercase}
.gal-card h4{font-family:var(--jpd);font-size:1.1rem;color:var(--ink);margin-bottom:6px;font-weight:700}
.gal-card .meta{font-size:.8rem;color:var(--gray)}

.profile-table{width:100%;border-collapse:collapse;border-top:2px solid var(--charcoal)}
.profile-table th,.profile-table td{text-align:left;padding:22px 8px;border-bottom:1px solid var(--line);font-size:.94rem;vertical-align:top}
.profile-table th{width:26%;color:var(--steel-d);font-family:var(--jpd);font-weight:700}
.history-list{list-style:none;border-top:2px solid var(--charcoal)}
.history-list li{display:grid;grid-template-columns:120px 1fr;gap:26px;padding:22px 8px;border-bottom:1px solid var(--line)}
.history-list .year{font-family:var(--display);color:var(--steel);font-weight:600;font-size:1.05rem}
.philo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line)}
.philo{text-align:center;padding:42px 30px;border-right:1px solid var(--line)}
.philo:last-child{border-right:none}
.philo .ic{font-family:var(--display);font-size:2.4rem;color:var(--steel);font-weight:700;margin-bottom:12px}
.philo h4{font-family:var(--jpd);font-size:1.3rem;color:var(--ink);margin-bottom:12px;font-weight:700}
.philo p{font-size:.9rem;color:var(--gray);line-height:2}
.rec-hero{width:100%;margin-bottom:54px;aspect-ratio:21/9;object-fit:cover}
.msg{max-width:740px;margin:0 auto 70px;text-align:center}
.msg h3{font-family:var(--jpd);font-size:1.7rem;color:var(--ink);line-height:1.6;margin-bottom:24px;font-weight:700}
.msg p{color:var(--gray);margin-bottom:16px;line-height:2.1}
.job-table{width:100%;border-collapse:collapse;border-top:2px solid var(--charcoal)}
.job-table th,.job-table td{text-align:left;padding:22px 8px;border-bottom:1px solid var(--line);font-size:.94rem;vertical-align:top}
.job-table th{width:26%;color:var(--steel-d);font-family:var(--jpd);font-weight:700}
.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.benefit{background:var(--paper);padding:30px;border-left:4px solid var(--steel)}
.benefit h4{font-family:var(--jpd);color:var(--ink);margin-bottom:8px;font-size:1.08rem;font-weight:700}
.benefit p{font-size:.86rem;color:var(--gray)}
.map-frame{width:100%;height:420px;border:0;filter:grayscale(.3)}
.access-info{display:grid;grid-template-columns:1fr 1fr;gap:50px;margin-top:54px;align-items:start}
.access-info h3{font-family:var(--jpd);color:var(--ink);font-size:1.3rem;margin-bottom:20px;font-weight:700}
.access-list{list-style:none}
.access-list li{display:grid;grid-template-columns:100px 1fr;padding:15px 0;border-bottom:1px solid var(--line);font-size:.92rem}
.access-list .lbl{color:var(--steel);font-weight:700}
.contact-wrap{display:grid;grid-template-columns:1fr 1.3fr;gap:60px;align-items:start}
.contact-aside h3{font-family:var(--jpd);color:var(--ink);font-size:1.4rem;margin-bottom:18px;font-weight:700}
.contact-aside p{color:var(--gray);margin-bottom:28px;font-size:.94rem;line-height:2.1}
.tel-box{background:var(--charcoal);color:#fff;padding:32px;text-align:center}
.tel-box .lbl{font-size:.8rem;color:rgba(255,255,255,.6)}
.tel-box .num{font-family:var(--display);font-size:2.1rem;color:var(--yellow);font-weight:700;margin:6px 0}
.tel-box .hours{font-size:.8rem;color:rgba(255,255,255,.6)}
.form-field{margin-bottom:24px}
.form-field label{display:block;font-size:.9rem;font-weight:700;color:var(--ink);margin-bottom:8px;font-family:var(--jpd)}
.form-field label .req{color:var(--ink);background:var(--yellow);font-size:.68rem;padding:2px 8px;margin-left:8px;font-weight:700}
.form-field input,.form-field textarea,.form-field select{width:100%;padding:14px 18px;border:1.5px solid var(--line);font-family:var(--jp);font-size:.95rem;background:#fff;transition:border .2s}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{outline:none;border-color:var(--steel)}
.form-submit{background:var(--steel);color:#fff;border:none;padding:18px 50px;font-family:var(--jp);font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s;width:100%;clip-path:polygon(0 0,100% 0,100% 78%,96% 100%,0 100%)}
.form-submit:hover{background:var(--steel-d)}
.form-note{font-size:.8rem;color:var(--gray);margin-top:16px;text-align:center}

@media(max-width:880px){
  .nav{height:64px}
  .logo .name{font-size:1.12rem}
  .burger{display:flex}
  .menu{
    position:fixed;top:64px;left:0;right:0;
    height:calc(100vh - 64px);
    flex-direction:column;gap:0;align-items:stretch;
    background:linear-gradient(165deg,var(--ink) 0%,var(--charcoal) 70%,var(--steel-d) 100%);
    padding:8px 0 24px;overflow-y:auto;
    z-index:250;pointer-events:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .35s,visibility .35s,transform .35s;
  }
  header.nav-open .menu{opacity:1;visibility:visible;transform:none}
  .menu li{width:100%;opacity:0;transform:translateY(-6px);transition:opacity .3s,transform .3s}
  header.nav-open .menu li{opacity:1;transform:none}
  header.nav-open .menu li:nth-child(1){transition-delay:.06s}
  header.nav-open .menu li:nth-child(2){transition-delay:.1s}
  header.nav-open .menu li:nth-child(3){transition-delay:.14s}
  header.nav-open .menu li:nth-child(4){transition-delay:.18s}
  header.nav-open .menu li:nth-child(5){transition-delay:.22s}
  header.nav-open .menu li:nth-child(6){transition-delay:.26s}
  header.nav-open .menu li:nth-child(7){transition-delay:.3s}
  .menu a{display:flex;align-items:center;justify-content:space-between;padding:18px 28px;font-size:1.06rem;font-weight:500;color:rgba(255,255,255,.9);border-bottom:1px solid var(--line-d);position:relative;z-index:2}
  .menu a::after{content:"\203A";position:static;width:auto;height:auto;background:none;color:var(--yellow);font-size:1.3rem;opacity:.8}
  .menu a:hover,.menu a:active{color:var(--yellow);background:rgba(255,255,255,.05)}
  .menu a:last-child{border-bottom:none}
  .nav-cta{display:flex;justify-content:center;margin:18px 28px 4px;background:var(--yellow);color:var(--ink) !important;padding:16px;font-weight:700;clip-path:none}
  .nav-cta::after{display:none}
  header.nav-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  header.nav-open .burger span:nth-child(2){opacity:0}
  header.nav-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  section{padding:66px 0}
  .hero-inner{padding:120px 0 70px}
  .about-grid,.qual-grid,.rec-cta-grid,.biz-detail,.biz-detail.rev,.contact-wrap,.access-info{grid-template-columns:1fr;direction:ltr;gap:40px}
  .biz-detail,.biz-detail.rev{margin-bottom:54px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat{border-bottom:1px solid var(--line-d)}
  .stat:nth-child(2){border-right:none}
  .biz-grid,.works-grid,.gallery,.philo-grid,.clients-grid,.benefits{grid-template-columns:1fr}
  .biz-card,.philo{border-right:none;border-bottom:1px solid var(--line)}
  .clients-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr;gap:36px}
  .scroll-hint{display:none}
  .page-hero{height:38vh;min-height:240px}
}