:root{
    --navy:#173458;
    --navy-900:#0d2138;
    --navy-800:#11294a;
    --navy-700:#1f4374;
    --navy-600:#2b5790;
    --accent:#e2612e;
    --accent-600:#c9501f;
    --accent-700:#aa4218;
    --ink:#15212e;
    --ink-soft:#465569;
    --line:#e2e6ec;
    --paper:#ffffff;
    --paper-2:#f4f6f9;
    --paper-3:#eef1f6;
    --radius:4px;
    --maxw:1180px;
    --display:"Anton",sans-serif;
    --head:"Zen Kaku Gothic New","Noto Sans JP",sans-serif;
    --body:"Noto Sans JP",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:var(--body);
    color:var(--ink);
    background:var(--paper);
    line-height:1.8;
    font-weight:400;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
  .eyebrow{
    font-family:var(--display);
    letter-spacing:.18em;
    color:var(--accent);
    font-size:14px;
    display:inline-flex;align-items:center;gap:12px;
    text-transform:uppercase;white-space:nowrap;
}
.eyebrow::before{content:"";width:30px;height:2px;background:var(--accent);display:inline-block}
  .eyebrow.center::after{content:"";width:30px;height:2px;background:var(--accent);display:inline-block}
  .eyebrow.center{justify-content:center}

  /* ---------- Header ---------- */
  header.site{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:rgba(13,33,56,.86);
    backdrop-filter:blur(10px);
    border-bottom:1px solid rgba(255,255,255,.08);
    transition:background .3s;
}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
  .nav .logo img{height:34px;width:auto}
  .nav ul{display:flex;align-items:center;gap:26px;list-style:none}
  .nav ul a{color:#dfe7f1;font-size:14px;font-weight:500;letter-spacing:.02em;transition:color .2s;position:relative}
  .nav ul a:hover{color:#fff}
  .nav ul a::after{content:"";position:absolute;left:0;bottom:-7px;height:2px;width:0;background:var(--accent);transition:width .25s}
  .nav ul a:hover::after{width:100%}
  .btn{
    display:inline-flex;align-items:center;gap:9px;
    font-family:var(--head);font-weight:700;
    padding:13px 24px;border-radius:var(--radius);
    font-size:15px;letter-spacing:.03em;
    transition:transform .15s,background .2s,box-shadow .2s;
    cursor:pointer;border:none;
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px -8px rgba(226,97,46,.8)}
  .btn-accent:hover{background:var(--accent-600);transform:translateY(-2px)}
  .btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.4)}
  .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
  .btn .arr{font-family:var(--body);font-weight:700}
  .nav .nav-cta{display:flex;align-items:center;gap:18px}
  .nav .tel{color:#aab9cc;font-size:13px;font-weight:500;display:flex;flex-direction:column;line-height:1.25;text-align:right}
  .nav .tel b{font-family:var(--display);color:#fff;font-size:19px;letter-spacing:.04em}
  .hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
  .hamburger span{width:26px;height:2px;background:#fff;transition:.3s}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    background:
      radial-gradient(120% 90% at 80% 0%, rgba(43,87,144,.55) 0%, transparent 55%),
      linear-gradient(160deg,var(--navy-900) 0%, var(--navy-800) 55%, #0a1b30 100%);
    color:#fff;overflow:hidden;
    padding:150px 0 110px;
}
.hero .grid-bg{
    position:absolute;inset:0;
    background-image:
      linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
    background-size:62px 62px;
    mask-image:radial-gradient(80% 80% at 70% 30%,#000 0%,transparent 75%);
    -webkit-mask-image:radial-gradient(80% 80% at 70% 30%,#000 0%,transparent 75%);
}
.hero .glow{position:absolute;width:520px;height:520px;border-radius:50%;
    background:radial-gradient(circle,rgba(226,97,46,.34),transparent 65%);
    right:-120px;top:-120px;filter:blur(10px)}
  .hero .ai-net{position:absolute;inset:0;z-index:1;pointer-events:none;
    mask-image:linear-gradient(102deg,transparent 0%,transparent 26%,#000 60%);
    -webkit-mask-image:linear-gradient(102deg,transparent 0%,transparent 26%,#000 60%)}
  .hero .wrap{position:relative;z-index:2}
  .hero-inner{max-width:840px}
  .hero h1{
    font-family:var(--head);font-weight:900;
    font-size:clamp(36px,5.4vw,66px);
    line-height:1.18;letter-spacing:.01em;margin:22px 0 0;
    text-wrap:balance;
}
.hero h1 .hl{color:var(--accent);position:relative;white-space:nowrap}
  .hero p.lead{
    margin-top:28px;font-size:clamp(15px,1.7vw,18.5px);
    color:#cdd8e6;max-width:640px;line-height:2;font-weight:400;
}
.hero .cta-row{display:flex;gap:16px;margin-top:40px;flex-wrap:wrap}
  .hero .cta-row .btn{padding:16px 30px;font-size:16px}
  .hero .kw{
    display:flex;gap:10px;flex-wrap:wrap;margin-top:48px;
    border-top:1px solid rgba(255,255,255,.1);padding-top:26px;max-width:680px;
}
.hero .kw span{
    font-size:12.5px;color:#9fb0c4;font-weight:500;letter-spacing:.04em;
    border:1px solid rgba(255,255,255,.16);padding:5px 12px;border-radius:100px;
}
.hero .kw span b{color:var(--accent);font-weight:700}

  /* reveal */
  .rv{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
  .rv.in{opacity:1;transform:none}
  .rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}.rv.d4{transition-delay:.32s}
  @media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

  /* ---------- Section base ---------- */
  section.block{padding:96px 0}
  .sec-head{margin-bottom:52px}
  .sec-head h2{
    font-family:var(--head);font-weight:900;
    font-size:clamp(28px,3.6vw,42px);line-height:1.3;margin-top:16px;letter-spacing:.01em;
}
.sec-head h2 .num{font-family:var(--display);color:var(--paper-3);font-size:.7em;margin-right:.4em;
    -webkit-text-stroke:1px var(--line);color:transparent}
  .sec-head p{color:var(--ink-soft);margin-top:14px;font-size:16px;max-width:660px}
  .center{text-align:center}
  .center .sec-head p{margin-left:auto;margin-right:auto}

  /* ---------- Intro / strengths ---------- */
  .intro{background:var(--paper-2)}
  .intro-lead{
    font-family:var(--head);font-weight:700;font-size:clamp(21px,2.6vw,30px);
    line-height:1.7;letter-spacing:.01em;max-width:920px;text-wrap:pretty;
}
.intro-lead .mk{
    background:linear-gradient(transparent 62%,rgba(226,97,46,.22) 62%);
}
.intro-sub{color:var(--ink-soft);margin-top:24px;max-width:760px;font-size:16px}
  .strengths{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:56px}
  .scard{background:#fff;border:1px solid var(--line);border-radius:6px;padding:34px 30px;position:relative;overflow:hidden;transition:transform .25s,box-shadow .25s}
  .scard:hover{transform:translateY(-5px);box-shadow:0 22px 40px -26px rgba(15,33,56,.4)}
  .scard .no{font-family:var(--display);font-size:46px;color:var(--paper-3);line-height:1;position:absolute;top:18px;right:22px;
    -webkit-text-stroke:1.5px #e6eaf0;color:transparent}
  .scard h3{font-family:var(--head);font-weight:700;font-size:20px;margin:0 0 12px;color:var(--navy)}
  .scard p{color:var(--ink-soft);font-size:14.5px;line-height:1.85}
  .scard .bar{width:38px;height:3px;background:var(--accent);margin-bottom:20px}

  /* ---------- Services ---------- */
  .services{background:var(--navy-900);color:#fff}
  .services .sec-head h2 .num{-webkit-text-stroke:1px rgba(255,255,255,.18)}
  .services .sec-head p{color:#aebccd}
  .svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
  .svc{
    position:relative;border-radius:8px;overflow:hidden;
    background:var(--navy-800);border:1px solid rgba(255,255,255,.08);
    min-height:330px;display:flex;flex-direction:column;justify-content:flex-end;
    isolation:isolate;transition:transform .3s,border-color .3s;
}
.svc:hover{transform:translateY(-6px);border-color:rgba(226,97,46,.6)}
  .svc .ph{position:absolute;inset:0;z-index:-2}
  .svc .ph img{width:100%;height:100%;object-fit:cover;filter:saturate(.9) brightness(.62)}
  .svc::after{content:"";position:absolute;inset:0;z-index:-1;
    background:linear-gradient(180deg,rgba(13,33,56,.15) 0%,rgba(13,33,56,.55) 45%,rgba(10,27,48,.96) 100%)}
  .svc .body{padding:32px 30px 30px}
  .svc .ix{font-family:var(--display);font-size:14px;letter-spacing:.16em;color:var(--accent)}
  .svc h3{font-family:var(--head);font-weight:900;font-size:25px;margin:8px 0 14px;line-height:1.3}
  .svc p{color:#c4d0de;font-size:14px;line-height:1.8}
  .svc .tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}
  .svc .tags span{font-size:11.5px;color:#dde6f0;border:1px solid rgba(255,255,255,.22);padding:4px 10px;border-radius:100px;font-weight:500}
  .svc .more{display:inline-flex;align-items:center;gap:8px;margin-top:20px;color:#fff;font-weight:700;font-size:13.5px;font-family:var(--head)}
  .svc .more .a{color:var(--accent);transition:transform .2s}
  .svc:hover .more .a{transform:translateX(5px)}

  /* ---------- Tech stack band ---------- */
  .stack{background:var(--navy);color:#fff;padding:0}
  .stack-inner{display:flex;align-items:center;gap:60px;padding:64px 0}
  .stack-inner .lead{flex:0 0 280px}
  .stack-inner .lead h3{font-family:var(--head);font-weight:900;font-size:26px;line-height:1.4}
  .stack-inner .lead p{color:#aebccd;font-size:14px;margin-top:12px}
  .chips{display:flex;flex-wrap:wrap;gap:12px;flex:1}
  .chips span{
    font-family:var(--head);font-weight:700;font-size:15px;
    background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
    padding:10px 18px;border-radius:var(--radius);color:#e8eef5;transition:.2s;
}
.chips span:hover{background:var(--accent);border-color:var(--accent);color:#fff}

  /* ---------- Blog ---------- */
  .blog .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
  .blog .sec-head .tx{flex:1;min-width:260px}
  .blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden}
  .post{background:#fff;padding:30px 28px;display:flex;flex-direction:column;gap:14px;transition:background .2s;min-height:188px}
  .post:hover{background:var(--paper-2)}
  .post .date{font-family:var(--display);font-size:15px;letter-spacing:.06em;color:var(--accent)}
  .post .tag{font-size:11px;font-weight:700;color:var(--navy);border:1px solid var(--line);border-radius:100px;padding:3px 11px;align-self:flex-start;letter-spacing:.04em}
  .post h4{font-family:var(--head);font-weight:700;font-size:17px;line-height:1.55;color:var(--ink);margin-top:auto;transition:color .2s}
  .post:hover h4{color:var(--accent)}
  .post .rd{font-size:12.5px;color:var(--ink-soft);display:flex;align-items:center;gap:6px}
  .post:hover .rd{color:var(--accent)}

  /* ---------- CTA ---------- */
  .cta{
    position:relative;color:#fff;text-align:center;overflow:hidden;
    background:
      radial-gradient(100% 140% at 50% 0%,rgba(226,97,46,.35),transparent 60%),
      linear-gradient(150deg,var(--navy-800),var(--navy-900));
    padding:108px 0;
}
.cta .grid-bg{position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
    background-size:62px 62px;mask-image:radial-gradient(70% 100% at 50% 0%,#000,transparent 75%);-webkit-mask-image:radial-gradient(70% 100% at 50% 0%,#000,transparent 75%)}
  .cta .wrap{position:relative;z-index:2}
  .cta h2{font-family:var(--head);font-weight:900;font-size:clamp(28px,4.2vw,48px);line-height:1.35}
  .cta p{color:#cdd8e6;margin:22px auto 0;max-width:560px;font-size:16px}
  .cta .cta-row{display:flex;gap:16px;justify-content:center;margin-top:40px;flex-wrap:wrap}
  .cta .cta-row .btn{padding:17px 36px;font-size:16px}
  .cta .tel-line{margin-top:34px;font-size:14px;color:#aab9cc}
  .cta .tel-line b{font-family:var(--display);font-size:30px;color:#fff;letter-spacing:.04em;display:block;margin-top:4px}

  /* ---------- Footer ---------- */
  footer.site{background:#0a1b30;color:#aab9cc;padding:64px 0 30px}
  .foot-top{display:flex;justify-content:space-between;gap:48px;flex-wrap:wrap;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1)}
  .foot-brand img{height:36px;margin-bottom:20px}
  .foot-brand address{font-style:normal;font-size:13.5px;line-height:1.9}
  .foot-brand .tel{font-family:var(--display);color:#fff;font-size:20px;margin-top:8px;letter-spacing:.04em}
  .foot-links{display:flex;gap:64px;flex-wrap:wrap}
  .foot-col h5{font-family:var(--display);font-size:13px;letter-spacing:.14em;color:#fff;margin-bottom:16px}
  .foot-col ul{list-style:none;display:flex;flex-direction:column;gap:11px}
  .foot-col ul a{font-size:13.5px;transition:color .2s}
  .foot-col ul a:hover{color:var(--accent)}
  .foot-partners{display:flex;align-items:center;gap:22px;margin-top:30px;flex-wrap:wrap}
  .foot-partners img{height:48px;width:auto;background:#fff;border-radius:4px;padding:5px 8px;opacity:.92}
  .foot-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:30px;flex-wrap:wrap;gap:12px}
  .foot-bottom .copy{font-family:var(--display);font-size:12px;letter-spacing:.1em;color:#65788f}
  .foot-tags{display:flex;flex-wrap:wrap;gap:8px}
  .foot-tags span{font-size:11px;color:#7e90a6;border:1px solid rgba(255,255,255,.1);padding:3px 9px;border-radius:100px}

  /* mobile menu panel */
  .mpanel{position:fixed;inset:0;z-index:55;background:rgba(10,27,48,.98);backdrop-filter:blur(8px);
    transform:translateX(100%);transition:transform .35s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;
    padding:100px 32px 40px}
  .mpanel.open{transform:none}
  .mpanel a{color:#dfe7f1;font-family:var(--head);font-weight:700;font-size:21px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.08)}
  .mpanel .btn{margin-top:28px;justify-content:center}

  /* ---------- Responsive ---------- */
  @media (max-width:1000px){
    .strengths{grid-template-columns:1fr 1fr}
    .blog-grid{grid-template-columns:1fr 1fr}
    .stack-inner{flex-direction:column;align-items:flex-start;gap:30px}
    .stack-inner .lead{flex:none}
}
@media (max-width:760px){
    .nav ul,.nav .tel{display:none}
    .nav .nav-cta .btn{display:none}
    .hamburger{display:flex}
    .nav{height:64px}
    .nav .logo img{height:30px}
    section.block{padding:66px 0}
    .hero{padding:120px 0 80px}
    .svc-grid{grid-template-columns:1fr}
    .strengths{grid-template-columns:1fr}
    .blog-grid{grid-template-columns:1fr}
    .wrap{padding:0 20px}
    .foot-links{gap:36px}
}