:root{
  --navy:#003F4D;
  --navy-2:#00526C;
  --navy-3:#00668B;
  --teal:#2E97A0;
  --teal-bright:#32A1AA;
  --blue-light:#7EADC9;
  --mist:#B6D5DE;
  --ink:#132a30;
  --text:#33474d;
  --muted:#6b7f85;
  --bg:#ffffff;
  --bg-alt:#f2f7f8;
  --line:#e2ebed;
  --radius:14px;
  --shadow:0 18px 40px -22px rgba(0,45,60,.45);
  --maxw:1160px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Noto Sans JP",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--text);background:var(--bg);line-height:1.85;
  font-size:16px;letter-spacing:.02em;overflow-x:hidden;overflow-x:clip;
                                                      
                                                              
                                                                  
                                                  
  word-break:normal;line-break:strict;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
                          
.nowrap{white-space:nowrap}
.ib{display:inline-block}
                                                                   
.oneline{display:block}
@media (min-width:1000px){.hero-lead,.section-sub{max-width:none}.oneline{white-space:nowrap}}

                     
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-weight:700;font-size:.95rem;letter-spacing:.05em;
  padding:15px 34px;border-radius:999px;border:2px solid transparent;
  cursor:pointer;transition:.35s var(--ease);white-space:nowrap;
}
.btn-lg{padding:17px 48px;font-size:1rem}
.btn-primary{background:var(--teal-bright);color:#fff;box-shadow:0 12px 26px -12px rgba(46,151,160,.9)}
.btn-primary:hover{background:var(--navy-3);transform:translateY(-3px);box-shadow:0 18px 32px -12px rgba(0,102,139,.85)}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--navy);border-color:#fff;transform:translateY(-3px)}

                    
.site-header{
  position:fixed;top:0;left:0;width:100%;z-index:1000;
  transition:background .4s var(--ease),box-shadow .4s var(--ease),padding .4s var(--ease);
  padding:20px 0;
}
.site-header.scrolled{background:rgba(0,52,64,.94);backdrop-filter:blur(10px);
  box-shadow:0 6px 24px -12px rgba(0,0,0,.5);padding:12px 0}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand-mark{width:42px;height:42px;flex:none;filter:drop-shadow(0 2px 6px rgba(0,0,0,.35))}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-en{font-family:"Montserrat",sans-serif;font-weight:700;letter-spacing:.14em;font-size:1.02rem;color:#fff}
.brand-ja{font-size:.66rem;letter-spacing:.14em;color:rgba(255,255,255,.82)}
.nav{display:flex;align-items:center;gap:30px}
.nav-external{display:none}                                            
.nav a{color:#fff;font-size:.9rem;font-weight:500;letter-spacing:.05em;position:relative;transition:.3s}
.nav a:not(.nav-cta)::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--teal-bright);transition:width .3s var(--ease)}
.nav a:not(.nav-cta):hover::after{width:100%}
.nav a:not(.nav-cta):hover{color:var(--mist)}
.nav-cta{background:var(--teal-bright);padding:10px 22px;border-radius:999px;font-weight:700;transition:.3s}
.nav-cta:hover{background:#fff;color:var(--navy)}
.nav-external{display:none}
.nrb-mark{width:28px;height:28px;flex:none}
.nrb-text{display:flex;flex-direction:column;line-height:1.28;min-width:0}
.nrb-label{font-family:"Montserrat",sans-serif;font-size:.52rem;letter-spacing:.14em;color:var(--mist);font-weight:600}
.nrb-title{font-size:.7rem;color:#fff;font-weight:700;white-space:nowrap}
.nrb-arrow{margin-left:auto;color:var(--teal-bright);flex:none}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:6px;width:44px;height:44px;background:none;border:none;cursor:pointer;z-index:1100}
.nav-toggle span{display:block;width:26px;height:2px;background:#fff;transition:.35s var(--ease);border-radius:2px}
.nav-toggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

                  
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:center;overflow:hidden;color:#fff}
.hero-bg{position:absolute;inset:0;background:url("../img/hero.jpg") center/cover no-repeat;transform:scale(1.08);animation:heroZoom 14s ease-out forwards}
@keyframes heroZoom{to{transform:scale(1)}}
.hero-overlay{position:absolute;inset:0;background:
  linear-gradient(120deg,rgba(0,40,52,.92) 0%,rgba(0,52,72,.78) 45%,rgba(0,63,77,.55) 100%)}
.hero-mark{position:absolute;right:-60px;bottom:-40px;width:min(46vw,540px);opacity:.10;filter:brightness(0) invert(1);pointer-events:none}
.hero-inner{position:relative;z-index:2;padding-top:90px}
.hero-kicker{font-family:"Montserrat",sans-serif;font-weight:600;letter-spacing:.4em;font-size:.82rem;color:var(--mist);margin-bottom:22px}
.hero-title{font-size:clamp(2.3rem,6vw,4.3rem);font-weight:700;line-height:1.28;letter-spacing:.02em;text-shadow:0 4px 24px rgba(0,0,0,.25)}
.hero-lead{margin-top:26px;font-size:clamp(.98rem,1.7vw,1.15rem);max-width:640px;color:rgba(255,255,255,.92);font-weight:400}
.hero-actions{margin-top:40px;display:flex;gap:16px;flex-wrap:wrap}

                      
.section{padding:110px 0}
.section-head{margin-bottom:56px}
.section-head.center{text-align:center}
.kicker{font-family:"Montserrat",sans-serif;font-weight:700;letter-spacing:.28em;font-size:.8rem;color:var(--teal);display:inline-flex;align-items:center;gap:14px;margin-bottom:18px}
.kicker-num{font-size:.9rem;color:var(--blue-light)}
.center .kicker{justify-content:center}
.section-title{font-size:clamp(1.6rem,3.6vw,2.5rem);font-weight:700;color:var(--navy);line-height:1.4;letter-spacing:.02em}
.section-sub{margin-top:20px;color:var(--muted);font-size:1rem}
.center .section-sub{margin-left:auto;margin-right:auto;max-width:640px}
.lead{font-size:1.12rem;color:var(--ink);font-weight:500}
.on-dark .section-title{color:#fff}
.on-dark .kicker{color:var(--mist)}

                   
.about{background:var(--bg)}
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center}
.about-copy p+p{margin-top:18px}
.about-copy .lead{margin-bottom:8px}
.about-copy strong{color:var(--navy);font-weight:700}
.about-visual{display:flex;justify-content:center}
.about-logo{width:min(100%,380px);filter:drop-shadow(0 22px 40px rgba(0,63,77,.18))}

                            
.services{background:var(--bg-alt)}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.4s var(--ease);border:1px solid var(--line)}
.card:hover{transform:translateY(-8px);box-shadow:0 30px 55px -25px rgba(0,45,60,.55)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:.6s var(--ease)}
.card:hover .card-media img{transform:scale(1.07)}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,63,77,0) 40%,rgba(0,63,77,.55))}
.card-no{position:absolute;left:18px;bottom:14px;z-index:2;font-family:"Montserrat",sans-serif;font-weight:700;font-size:1.5rem;color:#fff;letter-spacing:.05em;text-shadow:0 2px 8px rgba(0,0,0,.4)}
.card-body{padding:26px 26px 30px}
.card-body h3{font-size:1.28rem;color:var(--navy);font-weight:700;margin-bottom:12px;position:relative;padding-left:16px}
.card-body h3::before{content:"";position:absolute;left:0;top:.2em;width:5px;height:1.1em;background:var(--teal-bright);border-radius:3px}
.card-body p{font-size:.95rem;color:var(--text)}

                    
.why{position:relative;color:#fff;overflow:hidden}
.why-bg{position:absolute;inset:0;background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 55%,var(--navy-3) 100%)}
.why-bg::after{content:"";position:absolute;inset:0;background:url("../img/strength.jpg") center/cover;opacity:.12;mix-blend-mode:luminosity}
.why .container{position:relative;z-index:2}
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.why-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius);padding:40px 30px;transition:.4s var(--ease);backdrop-filter:blur(2px)}
.why-item:hover{background:rgba(255,255,255,.12);transform:translateY(-6px)}
.why-icon{font-family:"Montserrat",sans-serif;font-weight:700;font-size:1.6rem;width:62px;height:62px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--teal-bright);color:#fff;margin-bottom:22px}
.why-item h3{font-size:1.25rem;margin-bottom:12px;color:#fff}
.why-item p{color:rgba(255,255,255,.85);font-size:.95rem}

                     
.company{background:var(--bg)}
.company-table{max-width:820px;margin:0 auto;border-top:1px solid var(--line)}
.company-table dl{display:flex;border-bottom:1px solid var(--line);padding:22px 8px}
.company-table dt{flex:none;width:180px;font-weight:700;color:var(--navy);letter-spacing:.05em}
.company-table dd{color:var(--text)}
.company-table dd a{color:var(--navy-3);border-bottom:1px solid currentColor;transition:.3s}
.company-table dd a:hover{color:var(--teal-bright)}

                     
.contact{background:var(--bg-alt)}
.contact-note{max-width:760px;margin:0 auto 22px;color:var(--muted);font-size:.86rem;line-height:1.9;text-align:center}
.contact-form{max-width:760px;margin:0 auto;background:#fff;padding:44px;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.field{margin-bottom:22px;display:flex;flex-direction:column}
.field label{font-weight:700;color:var(--navy);font-size:.9rem;margin-bottom:8px;letter-spacing:.04em}
.req{background:var(--teal-bright);color:#fff;font-size:.68rem;padding:2px 8px;border-radius:4px;margin-left:8px;font-weight:700;letter-spacing:.06em}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:1rem;color:var(--ink);
  padding:13px 15px;border:1.5px solid var(--line);border-radius:9px;background:#fbfdfd;
  transition:.25s var(--ease);width:100%;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--teal-bright);background:#fff;box-shadow:0 0 0 4px rgba(50,161,170,.14)}
.field textarea{resize:vertical;min-height:150px}
.check{display:flex;align-items:flex-start;gap:10px;font-size:.9rem;color:var(--text);margin:6px 0 26px;cursor:pointer}
.check input{margin-top:5px;width:18px;height:18px;accent-color:var(--teal-bright);flex:none}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-submit{text-align:center}

                    
.site-footer{background:var(--navy);color:#fff}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:30px;padding:50px 24px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-mark{width:46px;height:46px;filter:brightness(0) invert(1);opacity:.92}
.footer-brand .brand-en{font-family:"Montserrat",sans-serif;font-weight:700;letter-spacing:.14em;display:block;font-size:1.05rem}
.footer-brand .brand-ja{font-size:.72rem;color:rgba(255,255,255,.7);display:block;margin-top:3px}
.footer-nav{display:flex;gap:26px;flex-wrap:wrap}
.footer-nav a{color:rgba(255,255,255,.85);font-size:.9rem;transition:.3s}
.footer-nav a:hover{color:var(--teal-bright)}
.footer-related{border-top:1px solid rgba(255,255,255,.12)}
.footer-related .container{display:flex;justify-content:center;padding:28px 24px}
.site-banner{display:flex;align-items:center;gap:18px;max-width:520px;width:100%;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);border-radius:14px;
  padding:18px 24px;transition:.35s var(--ease)}
.site-banner:hover{background:rgba(255,255,255,.12);transform:translateY(-4px);border-color:var(--teal-bright);box-shadow:0 16px 34px -18px rgba(0,0,0,.6)}
.site-banner-mark{width:52px;height:52px;flex:none}
.site-banner-text{display:flex;flex-direction:column;gap:3px;line-height:1.42}
.site-banner-label{font-family:"Montserrat",sans-serif;font-size:.64rem;letter-spacing:.18em;color:var(--mist);font-weight:600}
.site-banner-title{font-size:1.04rem;font-weight:700;color:#fff}
.site-banner-desc{font-size:.78rem;color:rgba(255,255,255,.72)}
.site-banner-arrow{margin-left:auto;color:var(--teal-bright);flex:none;transition:.3s var(--ease)}
.site-banner:hover .site-banner-arrow{transform:translate(3px,-3px)}
@media (max-width:480px){
  .site-banner{gap:12px;padding:15px 16px}
  .site-banner-mark{width:44px;height:44px}
  .site-banner-title{font-size:.95rem}
  .site-banner-label{font-size:.58rem}
  .site-banner-desc{display:none}
}
.footer-copy{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;font-size:.8rem;color:rgba(255,255,255,.6);text-align:center;font-family:"Montserrat",sans-serif;letter-spacing:.08em}
@media (max-width:768px){.footer-related .container{justify-content:center;text-align:center}}

                                                                    
.float-related{position:fixed;left:22px;bottom:22px;z-index:850;display:flex;align-items:center;gap:12px;
  background:rgba(0,52,64,.94);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.18);
  border-radius:12px;padding:11px 16px;box-shadow:0 14px 34px -12px rgba(0,0,0,.6);
  opacity:0;transform:translateY(14px);pointer-events:none;transition:opacity .35s var(--ease),transform .35s var(--ease),border-color .3s;max-width:min(340px,calc(100vw - 44px))}
.float-related.show{opacity:1;transform:none;pointer-events:auto}
.float-related:hover{border-color:var(--teal-bright)}
.float-related:hover.show{transform:translateY(-3px)}
.float-related-mark{width:36px;height:36px;flex:none}
.float-related-text{display:flex;flex-direction:column;line-height:1.32}
.float-related-label{font-family:"Montserrat",sans-serif;font-size:.56rem;letter-spacing:.16em;color:var(--mist);font-weight:600}
.float-related-title{font-size:.88rem;color:#fff;font-weight:700}
.float-related-title .ib{display:inline-block}
.float-related-arrow{color:var(--teal-bright);flex:none;margin-left:6px}
@media (max-width:768px){
  .float-related{left:12px;bottom:12px;gap:9px;padding:9px 12px;max-width:calc(100vw - 84px)}
  .float-related-mark{width:32px;height:32px}
  .float-related-title{font-size:.8rem}
}

                                      
.page-top{position:fixed;right:16px;bottom:16px;z-index:900;width:48px;height:48px;border-radius:50%;
  background:var(--navy);color:#fff;display:none;align-items:center;justify-content:center;
  box-shadow:0 8px 22px -6px rgba(0,0,0,.55);opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .35s var(--ease),transform .35s var(--ease),background .3s}
.page-top.show{opacity:1;transform:none;pointer-events:auto}
.page-top:active{background:var(--teal-bright)}
@media (max-width:768px){.page-top{display:flex}}

                              
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}

                        
@media (max-width:960px){
  .about-grid{grid-template-columns:1fr;gap:40px}
  .about-visual{order:-1}
  .about-logo{width:min(80%,320px)}
  .why-grid{grid-template-columns:1fr;gap:20px}
}
@media (max-width:768px){
  .nav-toggle{display:flex}
  .nav{position:fixed;inset:0 0 0 auto;width:min(78vw,320px);height:100vh;height:100svh;
    flex-direction:column;justify-content:center;align-items:flex-start;gap:28px;
    background:rgba(0,52,64,.98);backdrop-filter:blur(12px);padding:0 40px;
    transform:translateX(100%);transition:transform .45s var(--ease);box-shadow:-10px 0 40px rgba(0,0,0,.4)}
  .nav.open{transform:none}
  .nav a{font-size:1.1rem}
  .nav-external{display:flex;align-items:center;gap:9px;width:100%;margin-top:14px;
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);border-radius:10px;padding:9px 11px}
  .nav-external{display:flex}
  .nav-external:active{background:rgba(255,255,255,.12)}
  .float-related{display:none!important}                                                          
  .section{padding:76px 0}
  .cards{grid-template-columns:1fr;gap:22px}
  .contact-form{padding:28px 20px}
  .form-row{grid-template-columns:1fr;gap:0}
  .company-table dl{flex-direction:column;gap:6px;padding:18px 4px}
  .company-table dt{width:auto}
  .footer-inner{flex-direction:column;text-align:center}
  .footer-brand{flex-direction:column;text-align:center}
}
@media (max-width:480px){
  .brand-ja{display:none}
  .hero-inner{padding-top:80px}
  .btn{width:100%}
  .hero-actions{width:100%}
}