:root{
  --blue:#2e5fd9;
  --yellow:#ffcd3c;
  --on-yellow:#241c00;
  --ink:#0f2340;
  --gray:#5b6b8c;
  --line:rgba(15,35,64,.14);
  --surface:#ffffff;
  --surface-border:rgba(15,35,64,.12);
  --bg:#ffffff;
  --bg-alt:#eaf2ff;
  --radius:18px;
  --font-heading:"M PLUS Rounded 1c", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-body:"Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--bg);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:var(--font-heading);margin:0 0 16px;line-height:1.4;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:1080px;margin:0 auto;padding:0 24px;}

.skip-link{
  position:absolute;left:-999px;top:0;
  background:var(--yellow);color:var(--on-yellow);padding:10px 16px;z-index:200;
}
.skip-link:focus{left:16px;top:16px;}

/* ===== Header / Nav ===== */
#site-header{
  position:sticky;top:0;z-index:100;
  border-bottom:1px solid var(--line);
}
#site-header::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:rgba(255,255,255,0.88);
  backdrop-filter:blur(10px);
}
.navbar{
  display:flex;align-items:center;justify-content:space-between;
  max-width:1200px;margin:0 auto;padding:12px 24px;
}
.navbar-no-logo{justify-content:flex-end;}
.logo{
  display:inline-flex;align-items:center;background:#fff;border-radius:12px;padding:6px 10px;
  border:1px solid var(--surface-border);
}
.logo img{height:44px;width:auto;}
.navlinks{display:flex;align-items:center;gap:22px;font-size:13.5px;font-weight:500;}
.navlinks a{
  padding-bottom:4px;border-bottom:2px solid transparent;
  white-space:nowrap;
  transition:border-color .2s, color .2s;
}
.navlinks a:hover, .navlinks a.active{border-color:var(--blue);}
.navlinks a.nav-cta{
  background:var(--yellow);color:var(--on-yellow);padding:9px 20px;border-radius:999px;
  border-bottom:none;
}
.navlinks a.nav-cta:hover{filter:brightness(1.06);}

.hamburger{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;background:none;border:none;cursor:pointer;padding:0;
}
.hamburger span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s, opacity .25s;margin:0 auto;}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.open span:nth-child(2){opacity:0;}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ===== Buttons ===== */
.btn{
  display:inline-block;padding:14px 32px;border-radius:999px;
  font-weight:700;font-size:14px;letter-spacing:.02em;
  border:2px solid transparent;cursor:pointer;transition:transform .2s, filter .2s, background .2s;
}
.btn-primary{background:var(--yellow);color:var(--on-yellow);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);}
.btn-ghost{border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-block{width:100%;text-align:center;font-size:15px;padding:16px;}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  padding:140px 24px 100px;text-align:center;
  background:var(--bg-alt);
}
.hero-inner{position:relative;max-width:760px;margin:0 auto;}

.hero-logo-wrap{position:relative;display:flex;justify-content:center;margin-bottom:32px;}
.hero-logo-wrap::before,
.hero-logo-wrap::after{
  content:"";position:absolute;top:50%;left:50%;border-radius:50%;
  width:120px;height:120px;margin:-60px 0 0 -60px;
  background:radial-gradient(circle, rgba(46,95,217,.4), rgba(46,95,217,0) 70%);
  opacity:0;animation:heroGlowPulse 1.6s ease-out forwards;
}
.hero-logo-wrap::before{animation-delay:.05s;}
.hero-logo-wrap::after{
  background:radial-gradient(circle, rgba(255,205,60,.4), rgba(255,205,60,0) 70%);
  animation-delay:.25s;
}
@keyframes heroGlowPulse{
  0%{opacity:0;transform:scale(.4);}
  35%{opacity:.9;}
  100%{opacity:0;transform:scale(2.6);}
}
.hero-logo{
  position:relative;z-index:1;
  height:120px;width:auto;
  filter:drop-shadow(0 12px 20px rgba(15,35,64,.18));
  opacity:0;transform:scale(.25) rotate(-16deg);
  animation:heroLogoIn 1s cubic-bezier(.34,1.56,.64,1) forwards;
  animation-delay:.15s;
}
@keyframes heroLogoIn{
  0%{opacity:0;transform:scale(.25) rotate(-16deg);}
  55%{opacity:1;transform:scale(1.12) rotate(4deg);}
  75%{transform:scale(.95) rotate(-2deg);}
  100%{opacity:1;transform:scale(1) rotate(0deg);}
}

.hero-reveal{
  opacity:0;transform:translateY(18px);
  animation:heroFadeUp .7s ease forwards;
  animation-delay:var(--reveal-delay,.5s);
}
@keyframes heroFadeUp{to{opacity:1;transform:translateY(0);}}

.hero-eyebrow{
  font-weight:700;letter-spacing:.12em;font-size:13px;color:var(--blue);
  margin-bottom:18px;
}
.hero-title{font-size:clamp(28px,5vw,46px);font-weight:800;}
.grad-text{color:var(--blue);}
.hero-lead{color:var(--gray);font-size:16px;max-width:560px;margin:0 auto 36px;}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

/* ===== Scroll reveal (generic) ===== */
.reveal{
  opacity:0;transform:translateY(28px);
  transition:opacity .7s ease, transform .7s ease;
}
.reveal.in-view{opacity:1;transform:translateY(0);}

@media(prefers-reduced-motion:reduce){
  .hero-logo,.hero-reveal{animation:none!important;opacity:1!important;transform:none!important;}
  .hero-logo-wrap::before,.hero-logo-wrap::after{display:none!important;}
  .reveal{opacity:1!important;transform:none!important;transition:none!important;}
  .scroll-cue span::after{animation:none!important;}
}

.scroll-cue{
  position:absolute;left:50%;bottom:28px;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:11px;letter-spacing:.15em;color:var(--gray);
}
.scroll-cue span{
  width:1px;height:34px;background:rgba(15,35,64,.18);
  position:relative;overflow:hidden;
}
.scroll-cue span::after{
  content:"";position:absolute;top:-100%;left:0;width:100%;height:100%;
  background:var(--blue);animation:scrolldown 1.8s infinite;
}
@keyframes scrolldown{
  0%{top:-100%;}
  60%{top:100%;}
  100%{top:100%;}
}

/* ===== Sections ===== */
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-label{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;
  padding:5px 14px;border-radius:999px;
  background:var(--blue);color:#fff;margin-bottom:18px;
}
.section-title{font-size:clamp(24px,4vw,34px);font-weight:800;text-align:center;}
.mvv-statement{
  font-size:clamp(28px,5vw,42px);font-weight:800;line-height:1.5;text-align:center;
  color:var(--ink);max-width:760px;margin:0 auto;
}
.lead-block{max-width:680px;margin:0 auto 48px;text-align:center;color:var(--gray);}
.lead-block .lead-strong{color:var(--ink);font-weight:700;font-size:17px;margin-bottom:8px;}
.lead-block p{margin:8px 0;}
.pc-only{display:inline;}

.note{font-size:13px;color:var(--gray);text-align:center;margin-top:24px;}

/* ===== Box grid (ABOUT / WHY US) ===== */
.box-grid{
  display:grid;gap:24px;max-width:1080px;margin:0 auto;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
}
.box-grid.cols-3{grid-template-columns:repeat(3,1fr);}
.box-grid.cols-4{grid-template-columns:repeat(4,1fr);}
.pop-box{
  background:var(--surface);border:1px solid var(--surface-border);border-radius:var(--radius);
  padding:32px 24px;text-align:center;
  box-shadow:0 16px 32px -24px rgba(15,35,64,.2);
  transition:transform .25s, box-shadow .25s;
}
.pop-box:hover{transform:translateY(-6px);box-shadow:0 18px 32px -18px rgba(46,95,217,.35);}
.pop-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:50%;
  background:var(--blue);color:#fff;font-weight:800;font-size:16px;
  display:flex;align-items:center;justify-content:center;
}
.pop-box h3{font-size:15.5px;margin:0 0 10px;}
.pop-box p{font-size:13.5px;color:var(--gray);margin:0;}

/* ===== MVV ===== */
.mvv-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1040px;margin:0 auto;
}
.mvv-card{
  border-radius:var(--radius);padding:32px 24px;
  border-top:4px solid var(--blue);
  background:var(--surface);box-shadow:0 20px 40px -30px rgba(15,35,64,.22);
}
.mvv-card h3{
  text-align:center;font-size:13px;letter-spacing:.14em;color:var(--blue);margin-bottom:14px;
}
.mvv-headline{text-align:center;font-weight:800;font-size:17px;margin-bottom:14px;}
.mvv-card p{font-size:13.5px;color:var(--gray);margin:0;}
.value-list{list-style:none;padding:0;margin:0;text-align:center;font-size:14.5px;font-weight:700;}
.value-list li{margin:12px 0;}

/* ===== SERVICE (zigzag photo/text rows) ===== */
.service-alt{display:flex;flex-direction:column;gap:64px;max-width:980px;margin:0 auto;}
.service-row{display:flex;align-items:center;gap:48px;}
.service-row.reverse{flex-direction:row-reverse;}
.service-photo{
  flex:1 1 360px;min-width:0;aspect-ratio:4/3;
  border-radius:var(--radius);object-fit:cover;
  box-shadow:0 20px 40px -28px rgba(15,35,64,.35);
}
.service-copy{flex:1 1 360px;min-width:0;}
.service-num{
  display:inline-flex;width:36px;height:36px;border-radius:50%;
  background:var(--blue);color:#fff;font-weight:800;font-size:13px;
  align-items:center;justify-content:center;margin-bottom:14px;
}
.service-copy h3{margin:0 0 10px;font-size:18px;}
.service-copy p{margin:0;font-size:14px;color:var(--gray);}

@media(max-width:760px){
  .service-row,.service-row.reverse{flex-direction:column;gap:24px;}
}

/* ===== WORKS ===== */
.works-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:64px 24px;
}
.works-coming{
  font-family:var(--font-heading);font-weight:800;color:var(--blue);
  font-size:clamp(32px,6vw,56px);margin:0 0 16px;letter-spacing:.02em;
}
.ph-img{
  border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;flex-direction:column;
  color:#fff;font-weight:700;font-size:14px;text-align:center;line-height:1.6;
}
.ph-img span{font-weight:500;font-size:12px;opacity:.85;margin-top:4px;}
.ph-gradient-2{background:var(--blue);}

/* ===== WORK FLOW ===== */
.flow-wrap{
  display:grid;grid-template-columns:repeat(5,1fr);gap:16px;max-width:1100px;margin:0 auto;
}
.flow-step{
  background:var(--surface);border:1px solid var(--surface-border);border-radius:var(--radius);
  padding:24px 18px;position:relative;box-shadow:0 14px 28px -24px rgba(15,35,64,.2);
}
.flow-num{
  font-family:var(--font-heading);font-weight:800;font-size:26px;color:var(--blue);
  margin-bottom:6px;
}
.step-label{font-size:11px;color:var(--gray);letter-spacing:.08em;margin-bottom:8px;}
.flow-step h3{font-size:14px;margin:0 0 10px;}
.flow-step p{font-size:12.5px;color:var(--gray);margin:0 0 14px;line-height:1.6;}
.flow-days{
  font-size:12px;font-weight:700;text-align:center;padding:8px;border-radius:999px;
  background:var(--bg-alt);color:var(--blue);
}
@media(max-width:900px){
  .flow-wrap{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:520px){
  .flow-wrap{grid-template-columns:1fr;}
}

/* ===== Greeting ===== */
.greeting{display:flex;gap:48px;align-items:flex-start;max-width:900px;margin:0 auto;flex-wrap:wrap;}
.greeting-photo{
  width:260px;height:320px;flex-shrink:0;margin:0 auto;position:sticky;top:100px;
  object-fit:cover;border-radius:var(--radius);
  box-shadow:0 24px 44px -26px rgba(15,35,64,.4);
}
.greeting-text{flex:1 1 320px;}
.greeting-text p{margin:0 0 14px;font-size:14.5px;}
.greeting-tagline{
  font-family:var(--font-heading);font-weight:800;font-size:20px;color:var(--blue);
  margin:0 0 22px;line-height:1.6;
}
.signature{margin-top:16px;font-size:14px;color:var(--gray);font-weight:700;}

/* ===== Company table ===== */
.company-table{
  border-collapse:collapse;width:100%;max-width:800px;margin:0 auto;
  background:var(--surface);border-radius:var(--radius);overflow:hidden;
  box-shadow:0 20px 40px -30px rgba(15,35,64,.22);
}
.company-table th,.company-table td{
  border-bottom:1px solid var(--line);padding:16px 20px;text-align:left;font-size:14px;vertical-align:top;
}
.company-table tr:last-child th,.company-table tr:last-child td{border-bottom:none;}
.company-table th{width:150px;background:var(--bg-alt);font-weight:700;color:var(--blue);}
.company-table td.business-list{line-height:2;}

/* ===== Contact ===== */
.contact-wrap{max-width:640px;margin:0 auto;}
.tabs{display:flex;gap:8px;margin-bottom:28px;}
.tab{
  flex:1;text-align:center;padding:12px;font-size:14px;font-weight:700;
  border-radius:999px;border:2px solid var(--line);background:var(--surface);color:var(--gray);cursor:pointer;
  transition:all .2s;
}
.tab.active{background:var(--yellow);color:var(--on-yellow);border-color:transparent;}
form{display:flex;flex-direction:column;gap:18px;}
.form-row{display:flex;flex-direction:column;gap:6px;}
label{font-size:13px;font-weight:700;color:var(--ink);}
.req{
  font-size:10px;color:#fff;background:var(--blue);border-radius:999px;
  padding:2px 8px;margin-left:8px;font-weight:700;vertical-align:middle;
}
input,textarea{
  padding:13px 14px;border:1.5px solid var(--line);border-radius:12px;
  font-family:inherit;font-size:14px;background:#fff;color:var(--ink);
}
input::placeholder,textarea::placeholder{color:var(--gray);opacity:.75;}
input:focus,textarea:focus{outline:none;border-color:var(--blue);}
textarea{min-height:130px;resize:vertical;}
.form-status{font-size:13px;font-weight:700;min-height:18px;text-align:center;}
.form-status.ok{color:#1fa15a;}
.form-status.err{color:var(--blue);}

/* ===== Footer ===== */
.site-footer{padding:48px 0 32px;background:var(--ink);color:#fff;}
.footer-inner{text-align:center;}
.footer-logo{
  display:inline-flex;align-items:center;margin-bottom:16px;
  background:#fff;border-radius:10px;padding:8px 14px;
}
.footer-logo img{height:26px;}
.footer-contact{font-size:13px;opacity:.85;margin:0 0 8px;}
.footer-copy{font-size:12px;opacity:.6;margin:0;}

/* ===== Responsive ===== */
@media(max-width:900px){
  .box-grid.cols-3,.box-grid.cols-4{grid-template-columns:repeat(2,1fr);}
  .mvv-grid{grid-template-columns:1fr;max-width:480px;}
}
@media(max-width:760px){
  .pc-only{display:none;}
  .hamburger{display:flex;}
  .navlinks{
    position:fixed;top:64px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;align-items:flex-start;
    padding:32px 28px;gap:20px;font-size:16px;
    transform:translateX(100%);transition:transform .3s ease;
    overflow-y:auto;
  }
  .navlinks.open{transform:translateX(0);}
  .navlinks a.nav-cta{width:100%;text-align:center;}
  .hero{padding:110px 20px 80px;}
  .section{padding:72px 0;}
  .box-grid.cols-3,.box-grid.cols-4{grid-template-columns:1fr;}
  .greeting{flex-direction:column;text-align:center;}
  .greeting-photo{position:static;}
}