:root{
  --navy:#0A0F1E;
  --navy-2:#0F1830;
  --ink:#0B1220;
  --blue:#2563EB;
  --cyan:#22D3EE;
  --gray-50:#F7F9FC;
  --gray-100:#EEF2F8;
  --gray-300:#CBD5E1;
  --gray-500:#64748B;
  --gray-700:#334155;
  --white:#FFFFFF;
  --radius:18px;
  --radius-sm:10px;
  --shadow:0 20px 45px -20px rgba(15,23,42,.25);
  --shadow-sm:0 8px 20px -10px rgba(15,23,42,.18);
  --maxw:1160px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans JP","Hiragino Sans",sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:900;letter-spacing:.01em;}
p{margin:0;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:100;
  border-bottom:1px solid rgba(15,23,42,.06);
}
header::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:rgba(255,255,255,.75);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:16px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:900;color:var(--ink);white-space:nowrap;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
  position:relative;
}
.logo-mark::before,.logo-mark::after{
  content:"";position:absolute;border:2px solid rgba(255,255,255,.9);border-bottom:none;border-right:none;
  border-radius:50% 50% 0 0;left:50%;bottom:6px;transform:translateX(-50%);
}
.logo-mark::before{width:18px;height:9px;}
.logo-mark::after{width:10px;height:5px;bottom:6px;}
nav#mainNav ul{display:flex;gap:36px;}
nav#mainNav a{font-size:14.5px;font-weight:700;color:var(--gray-700);transition:color .2s;position:relative;padding:4px 0;}
nav#mainNav a:hover{color:var(--blue);}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--ink);color:var(--white);
  padding:11px 22px;border-radius:999px;font-size:14px;font-weight:700;
  white-space:nowrap;transition:transform .2s,background .2s;
}
.nav-cta:hover{background:var(--blue);transform:translateY(-1px);}
.menu-btn{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--ink);}

@media (max-width:860px){
  .menu-btn{display:block;}
  .nav-cta{display:none;}
  nav#mainNav{
    position:fixed;top:69px;left:0;right:0;bottom:0;
    background:var(--white);
    transform:translateX(100%);transition:transform .3s ease;
    padding:32px 24px;overflow:auto;
  }
  nav#mainNav.open{transform:translateX(0);}
  nav#mainNav ul{flex-direction:column;gap:4px;}
  nav#mainNav a{display:block;padding:16px 4px;border-bottom:1px solid var(--gray-100);font-size:16px;}
}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:radial-gradient(1100px 550px at 15% -10%,#132347 0%,var(--navy) 55%),var(--navy);
  color:var(--white);
  padding:120px 0 100px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(500px 300px at 88% 18%,rgba(34,211,238,.22),transparent 70%),
    radial-gradient(600px 400px at 100% 100%,rgba(37,99,235,.28),transparent 70%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--cyan);
  border:1px solid rgba(34,211,238,.35);background:rgba(34,211,238,.08);
  padding:7px 16px;border-radius:999px;margin-bottom:26px;text-transform:uppercase;
}
.hero-eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.25);}
.hero h1{font-size:clamp(28px,3.4vw,42px);color:var(--white);margin-bottom:22px;}
.hero h1 em{font-style:normal;white-space:nowrap;background:linear-gradient(90deg,var(--cyan),#93c5fd);-webkit-background-clip:text;background-clip:text;color:transparent;}
@media (max-width:480px){.hero h1 em{white-space:normal;}}
.hero p.lead{font-size:16.5px;color:#C9D3E5;max-width:520px;margin-bottom:34px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:15px 30px;border-radius:999px;font-size:15px;font-weight:700;
  transition:transform .2s,box-shadow .2s,background .2s,color .2s;
  border:1px solid transparent;
}
.btn-primary{background:linear-gradient(90deg,var(--blue),var(--cyan));color:var(--white);box-shadow:0 14px 30px -12px rgba(37,99,235,.55);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px -12px rgba(37,99,235,.65);}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--white);border-color:rgba(255,255,255,.25);}
.btn-ghost:hover{background:rgba(255,255,255,.14);}
.btn-dark{background:var(--ink);color:var(--white);}
.btn-dark:hover{background:var(--blue);transform:translateY(-2px);}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  font-size:12.5px;font-weight:700;color:#DCE6F7;
  border:1px solid rgba(255,255,255,.18);padding:8px 15px;border-radius:999px;
  background:rgba(255,255,255,.04);
}

.hero-visual{position:relative;height:420px;}
.hv-card{
  position:absolute;border-radius:20px;overflow:hidden;box-shadow:0 30px 60px -20px rgba(0,0,0,.55);
  border:1px solid rgba(255,255,255,.12);
}
.hv-card img{width:100%;height:100%;object-fit:cover;}
.hv-1{width:64%;height:62%;top:0;right:0;}
.hv-2{width:48%;height:46%;left:0;bottom:0;z-index:2;}
.hv-stat{
  position:absolute;left:6%;top:8%;z-index:3;
  background:rgba(10,15,30,.72);backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.15);
  border-radius:16px;padding:16px 20px;color:var(--white);
}
.hv-stat .n{font-size:26px;font-weight:900;color:var(--cyan);}
.hv-stat .l{font-size:12px;color:#C9D3E5;margin-top:2px;}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{height:320px;margin-top:8px;}
}

/* ---------- section basics ---------- */
section{padding:96px 0;}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.14em;
  color:var(--blue);text-transform:uppercase;margin-bottom:14px;
}
.sec-head{max-width:640px;margin-bottom:56px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-head h2{font-size:clamp(26px,3.2vw,36px);color:var(--ink);}
.sec-head p{color:var(--gray-500);margin-top:16px;font-size:15.5px;}

/* ---------- strengths ---------- */
.bg-soft{background:var(--gray-50);}
.strength-row{
  display:grid;grid-template-columns:.95fr 1.05fr;gap:64px;align-items:center;
  padding:64px 0;
}
.strength-row.reverse{direction:rtl;}
.strength-row.reverse > *{direction:ltr;}
.strength-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);aspect-ratio:4/3;}
.strength-media img{width:100%;height:100%;object-fit:cover;}
.strength-num{
  font-size:13px;font-weight:800;color:var(--blue);letter-spacing:.1em;
  display:flex;align-items:center;gap:10px;margin-bottom:14px;
}
.strength-num::before{content:"";width:26px;height:2px;background:var(--blue);}
.strength-row h3{font-size:26px;color:var(--ink);margin-bottom:16px;}
.strength-row p{color:var(--gray-700);margin-bottom:14px;font-size:15px;}
.strength-row + .strength-row{border-top:1px solid var(--gray-100);}

/* ---------- services grid ---------- */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.service-card{
  background:var(--white);border:1px solid var(--gray-100);border-radius:var(--radius);
  padding:30px 26px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.svc-icon{
  width:52px;height:52px;border-radius:14px;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.svc-icon svg{width:26px;height:26px;stroke:var(--white);fill:none;stroke-width:2;}
.service-card h4{font-size:17px;color:var(--ink);margin-bottom:10px;}
.service-card p{font-size:14px;color:var(--gray-500);}

@media (max-width:900px){
  .strength-row{grid-template-columns:1fr;gap:32px;}
  .strength-row.reverse{direction:ltr;}
  .service-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:560px){
  .service-grid{grid-template-columns:1fr;}
}

/* ---------- gallery / bento ---------- */
.bento{
  display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:130px;gap:16px;
}
.bento img{width:100%;height:100%;object-fit:cover;border-radius:16px;}
.bento .b1{grid-column:span 2;grid-row:span 2;}
.bento .b2{grid-column:span 2;grid-row:span 1;}
.bento .b3{grid-column:span 1;grid-row:span 1;}
.bento .b4{grid-column:span 1;grid-row:span 1;}
.bento .b5{grid-column:span 2;grid-row:span 1;}
@media (max-width:760px){
  .bento{grid-template-columns:repeat(2,1fr);grid-auto-rows:110px;}
  .bento .b1{grid-column:span 2;grid-row:span 2;}
  .bento .b2,.bento .b5{grid-column:span 2;}
}

/* ---------- cta banner ---------- */
.cta-banner{
  background:linear-gradient(120deg,var(--navy),#132548);
  border-radius:28px;padding:64px 56px;color:var(--white);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-banner::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(500px 300px at 90% 10%,rgba(34,211,238,.25),transparent 70%);
}
.cta-banner h2{position:relative;font-size:clamp(22px,3vw,30px);max-width:480px;}
.cta-banner p{position:relative;color:#C9D3E5;margin-top:12px;font-size:14.5px;}
.cta-banner .btn{position:relative;}

/* ---------- footer ---------- */
footer{background:var(--ink);color:#B9C3D6;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08);}
.footer-name{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:900;color:var(--white);margin-bottom:14px;}
.footer-desc{font-size:13.5px;line-height:1.9;max-width:280px;}
.footer-col h5{color:var(--white);font-size:13px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:18px;}
.footer-col ul li{margin-bottom:11px;font-size:14px;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{padding-top:24px;font-size:12.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;color:#7C879D;}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr;}}

/* ---------- page hero (sub pages) ---------- */
.page-hero{
  background:radial-gradient(900px 420px at 10% -20%,#132347 0%,var(--navy) 55%),var(--navy);
  color:var(--white);padding:76px 0 60px;
}
.page-hero .eyebrow{color:var(--cyan);}
.page-hero h1{font-size:clamp(28px,3.6vw,42px);color:var(--white);}
.page-hero p{color:#C9D3E5;margin-top:16px;max-width:600px;font-size:15px;}
.breadcrumb{font-size:13px;color:#93A3C2;margin-bottom:18px;}
.breadcrumb a:hover{color:var(--cyan);}

/* ---------- about page ---------- */
.about-row{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
.about-row .text p{color:var(--gray-700);margin-bottom:16px;font-size:15px;}
.about-imgs{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.about-imgs img{border-radius:16px;box-shadow:var(--shadow-sm);aspect-ratio:3/4;object-fit:cover;}
.about-imgs img:first-child{margin-top:36px;}
.capability-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px;}
.capability-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--gray-700);
  background:var(--gray-50);border-radius:12px;padding:14px 16px;
}
.capability-list li::before{content:"";flex:none;width:8px;height:8px;margin-top:6px;border-radius:2px;background:linear-gradient(135deg,var(--blue),var(--cyan));}
@media (max-width:860px){
  .about-row{grid-template-columns:1fr;}
  .about-imgs{order:-1;}
  .capability-list{grid-template-columns:1fr;}
}

/* ---------- process steps ---------- */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step;}
.process-item{position:relative;padding-top:8px;}
.process-item::before{
  counter-increment:step;content:"0" counter(step);
  font-size:34px;font-weight:900;color:var(--gray-500);display:block;margin-bottom:6px;
}
.process-item h4{font-size:16px;color:var(--ink);margin-bottom:8px;}
.process-item p{font-size:13.5px;color:var(--gray-500);}
@media (max-width:860px){.process{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){.process{grid-template-columns:1fr;}}

/* ---------- project cards ---------- */
.project-list{display:flex;flex-direction:column;gap:28px;}
.project-card{
  display:grid;grid-template-columns:.85fr 1.15fr;
  border:1px solid var(--gray-100);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);
}
.project-card .img{background-size:cover;background-position:center;min-height:260px;}
.project-card .text{padding:40px 44px;display:flex;flex-direction:column;justify-content:center;}
.project-tag{font-size:12px;font-weight:800;color:var(--blue);letter-spacing:.08em;margin-bottom:10px;text-transform:uppercase;}
.project-card h3{font-size:22px;color:var(--ink);margin-bottom:14px;}
.project-card p{color:var(--gray-700);font-size:14.5px;margin-bottom:10px;}
.project-card.reverse{grid-template-columns:1.15fr .85fr;}
.project-card.reverse .img{order:2;}
@media (max-width:800px){
  .project-card,.project-card.reverse{grid-template-columns:1fr;}
  .project-card.reverse .img{order:0;}
  .project-card .text{padding:32px 26px;}
}

/* ---------- contact page ---------- */
.contact-grid{display:flex;justify-content:center;}
.contact-card{
  background:var(--navy);color:var(--white);border-radius:var(--radius);padding:40px 34px;
  position:relative;overflow:hidden;max-width:560px;width:100%;
}
.contact-card::before{content:"";position:absolute;inset:0;background:radial-gradient(400px 260px at 90% 0%,rgba(34,211,238,.22),transparent 70%);}
.contact-card h3{position:relative;font-size:19px;margin-bottom:22px;}
.contact-item{position:relative;display:flex;gap:14px;margin-bottom:22px;font-size:14px;}
.contact-item .k{color:#93A3C2;font-size:12px;letter-spacing:.06em;text-transform:uppercase;display:block;margin-bottom:4px;}
.contact-item .v{color:var(--white);font-weight:700;}
.contact-note{position:relative;font-size:12.5px;color:#93A3C2;margin-top:26px;line-height:1.8;}

.uform{background:var(--white);border:1px solid var(--gray-100);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow-sm);}
.uform-row{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:22px;}
.uform-full{margin-bottom:22px;}
.uform label{display:block;font-size:13px;font-weight:700;color:var(--gray-700);margin-bottom:8px;}
.uform input,.uform textarea{
  width:100%;border:1px solid var(--gray-300);border-radius:var(--radius-sm);
  padding:13px 15px;font-size:14.5px;font-family:inherit;color:var(--ink);
  background:var(--gray-50);transition:border-color .2s,background .2s;
}
.uform input:focus,.uform textarea:focus{outline:none;border-color:var(--blue);background:var(--white);}
.uform textarea{min-height:140px;resize:vertical;}
.uform button{
  background:linear-gradient(90deg,var(--blue),var(--cyan));color:var(--white);
  border:none;padding:15px 36px;border-radius:999px;font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .2s,box-shadow .2s;box-shadow:0 14px 30px -12px rgba(37,99,235,.5);
}
.uform button:hover{transform:translateY(-2px);}
.form-note{font-size:12px;color:var(--gray-500);margin-top:16px;}
@media (max-width:860px){
  .uform-row{grid-template-columns:1fr;}
  .uform{padding:28px 22px;}
}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease;}
.reveal.in{opacity:1;transform:translateY(0);}