:root{
  --bg:#eef1f4; --surface:#ffffff; --ink:#16202b; --muted:#566472; --line:#d8dee4;
  --navy:#1f4e79; --navy-d:#163a5c; --steel:#5a7184; --accent:#1f4e79; --gold:#b8893b;
  --maxw:1080px; --sans:"Noto Sans JP",sans-serif; --serif:"Shippori Mincho",serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.85;font-size:15px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}

.demo-bar{background:#0f2a44;color:#cfe0f0;text-align:center;font-size:12px;letter-spacing:.04em;padding:6px 10px}

.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{font-weight:700;font-size:18px;letter-spacing:.02em;color:var(--navy)}
.brand small{display:block;font-size:10px;color:var(--muted);font-weight:400;letter-spacing:.12em}
.nav{display:flex;align-items:center;gap:18px;font-size:13px}
.nav a{color:var(--muted)}
.nav a:hover{color:var(--ink)}
.tel{font-weight:700;color:var(--navy)}

.btn{display:inline-block;background:var(--navy);color:#fff;padding:11px 20px;border-radius:3px;font-size:13px;font-weight:500;letter-spacing:.03em;border:1px solid var(--navy);transition:.2s}
.btn:hover{background:var(--navy-d);border-color:var(--navy-d)}
.btn-lg{padding:15px 28px;font-size:14px}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-ghost:hover{background:#fff;color:var(--navy)}

.hero{position:relative;min-height:78vh;display:flex;align-items:center;overflow:hidden;background:#0f2a44}
.hero-media,.hero-media img{position:absolute;inset:0;width:100%;height:100%}
.hero-media img{object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,42,68,.86),rgba(15,42,68,.45))}
.hero-content{position:relative;color:#fff;padding:54px 22px}
.hero-eyebrow{font-size:13px;letter-spacing:.16em;color:#bcd2e8;margin-bottom:16px}
.hero h1{font-size:38px;line-height:1.32;font-weight:700;letter-spacing:.02em}
.hero h1 .accent{color:#7fb2e0}
.hero-lead{margin-top:18px;font-size:15px;color:#dbe6f1;max-width:560px}
.hero-meta{margin-top:16px;font-size:13px;color:#aac4dd}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

.section{padding:66px 0}
.section-alt{background:var(--surface)}
.eyebrow{font-size:12px;letter-spacing:.2em;color:var(--navy);text-transform:uppercase;margin-bottom:8px;font-weight:500}
.section-title{font-size:26px;font-weight:700;letter-spacing:.02em;margin-bottom:6px}
.section-title::after{content:"";display:block;width:46px;height:3px;background:var(--gold);margin-top:14px}
.section-note{color:var(--muted);font-size:13px;margin:18px 0 24px}

.svc{display:grid;grid-template-columns:1fr;gap:16px;margin-top:26px}
.svc-card{background:var(--bg);border:1px solid var(--line);border-left:4px solid var(--navy);border-radius:0 4px 4px 0;padding:24px 22px}
.svc-card h3{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--navy-d)}
.svc-card p{color:var(--muted);font-size:14px}

.reasons{display:grid;grid-template-columns:1fr;gap:16px;margin-top:26px}
.reason{display:flex;gap:16px;align-items:flex-start}
.reason .no{flex:0 0 auto;width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.reason h3{font-size:16px;font-weight:700;margin-bottom:4px}
.reason p{color:var(--muted);font-size:14px}

.feature{display:grid;grid-template-columns:1fr}
.feature-media img{width:100%;height:260px;object-fit:cover}
.feature-text{background:var(--navy);color:#e7eef6;display:flex;align-items:center}
.feature-inner{padding:46px 22px;max-width:560px;margin:0 auto}
.feature-text .eyebrow{color:#9cc0e4}
.feature-text .section-title{color:#fff}
.feature-text p{color:#cdddec;font-size:14px}

.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.g-tile{aspect-ratio:4/3;background:var(--bg);border:1px dashed var(--line);border-radius:4px;display:flex;align-items:center;justify-content:center}
.g-tile span{color:var(--muted);font-size:12px;letter-spacing:.08em}

.info{margin-top:8px;border-top:1px solid var(--line)}
.info div{display:flex;border-bottom:1px solid var(--line);padding:14px 4px;font-size:14px}
.info dt{flex:0 0 130px;color:var(--navy);font-weight:500}
.info dd{flex:1;color:var(--ink)}
.info a{color:var(--navy);font-weight:700}

.cta{background:#0f2a44;color:#fff;text-align:center;padding:64px 0}
.cta h2{font-size:26px;font-weight:700;margin-bottom:10px}
.cta p{color:#bcd2e8;margin-bottom:8px}
.cta .bigtel{font-size:30px;font-weight:700;letter-spacing:.02em;margin:14px 0}
.cta-btns{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:18px}

.site-footer{background:#0b1f33;color:#9fb4c8;padding:34px 0;font-size:13px}
.footer-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;align-items:center}
.site-footer .brand{color:#fff}
.demo-note{font-size:12px;color:#7e93a8;max-width:360px}

@media(min-width:760px){
  body{font-size:16px}
  .hero h1{font-size:50px}
  .hero-lead{font-size:17px}
  .svc{grid-template-columns:repeat(2,1fr)}
  .reasons{grid-template-columns:repeat(3,1fr)}
  .reason{flex-direction:column}
  .feature{grid-template-columns:1fr 1fr}
  .feature-media img{height:100%;min-height:360px}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .section-title{font-size:30px}
}
@media(max-width:520px){.nav a:not(.btn):not(.tel){display:none}}