:root{
  --bg:#0f3d2e;
  --bg2:#0b2f24;
  --surface:#ffffff;
  --muted:#f4f6f8;
  --text:#0b1220;
  --sub:#556070;
  --brand:#0f6f53;
  --accent:#2563eb;
  --border:rgba(15,20,30,.10);
  --shadow:0 12px 30px rgba(0,0,0,.10);
  --radius:16px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",sans-serif;
  color:var(--text);
  background:var(--surface);
  line-height:1.6;
}

.container{
  width:min(1120px, calc(100% - 40px));
  margin:0 auto;
}

.header{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(255,255,255,.84);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--border);
}
.header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 0;
}
.brand{display:flex;gap:10px;align-items:center}
.brand__mark{
  width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:#fff;
  border:1px solid var(--border);
}
.brand__mark img{width:22px;height:22px;object-fit:contain;display:block}
.brand__name{font-weight:800;letter-spacing:.02em}
.brand__tag{font-size:12px;color:var(--sub)}
.nav{display:flex;gap:16px}
.nav a{color:var(--sub);text-decoration:none;font-weight:600}
.nav a:hover{color:var(--text)}

.hero{
  background:
    radial-gradient(1200px 600px at 20% 0%, rgba(15,111,83,.20), transparent 60%),
    radial-gradient(800px 500px at 90% 10%, rgba(37,99,235,.18), transparent 55%),
    linear-gradient(180deg, #ffffff, #fbfcfe);
  padding:56px 0 28px;
}
.hero__grid{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap:28px;
  align-items:center;
}
.hero__title{
  font-size:44px;
  line-height:1.14;
  margin:0 0 14px;
  letter-spacing:-.02em;
}
.hero__lead{
  margin:0 0 18px;
  color:var(--sub);
  font-size:16px;
}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}
.hero__note{color:#6b7280;font-size:12px}
.hero__art img{
  width:100%;
  height:auto;
  border-radius:24px;
  box-shadow:var(--shadow);
  border:1px solid var(--border);
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 16px;
  border-radius:14px;
  font-weight:800;
  text-decoration:none;
  border:1px solid transparent;
}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px rgba(37,99,235,.25)}
.btn--ghost{background:#fff;color:var(--text);border-color:var(--border)}
.btn--ghost:hover{background:#f7f7fb}
.btn--primary:hover{filter:brightness(.98)}

.section{padding:52px 0}
.section--muted{background:var(--muted)}
.section__title{
  margin:0 0 18px;
  font-size:28px;
  letter-spacing:-.01em;
}

.cards{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:14px;
}
.card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:18px;
  box-shadow:0 8px 18px rgba(0,0,0,.05);
}
.card__icon{font-size:22px}
.card__title{margin:10px 0 6px;font-size:16px}
.card__text{margin:0;color:var(--sub);font-size:14px}

.screens{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:14px;
}
.screen{
  margin:0;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:0 10px 22px rgba(0,0,0,.06);
}
.screen img{width:100%;height:auto;display:block}
.screen figcaption{
  padding:12px 14px;
  font-size:13px;
  color:var(--sub);
}

.faq{display:grid;gap:10px}
.faq__item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:12px 14px;
}
.faq__item summary{cursor:pointer;font-weight:800}
.faq__item p{margin:10px 0 0;color:var(--sub);font-size:14px}

.footer{
  border-top:1px solid var(--border);
  background:#fff;
  padding:18px 0;
}
.footer__inner{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.footer__copy{color:var(--sub);font-size:13px}
.footer__links{display:flex;gap:12px}
.footer__links a{color:var(--sub);text-decoration:none;font-weight:700;font-size:13px}
.footer__links a:hover{color:var(--text)}

.legal{max-width:820px}
.legal__title{margin:0 0 12px;font-size:28px}
.legal__box{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:16px;
  line-height:1.7;
  color:var(--sub);
  box-shadow:0 10px 22px rgba(0,0,0,.06);
}
.legal__box p{margin:10px 0}
.legal__box h2{
  margin:18px 0 8px;
  font-size:16px;
  color:var(--text);
  letter-spacing:.01em;
}
.legal__box h3{
  margin:14px 0 6px;
  font-size:14px;
  color:var(--text);
}
.legal__box ul{margin:8px 0 8px 1.2em;padding:0}
.legal__box li{margin:6px 0}
.legal__box .legal__meta{margin-top:14px;color:#6b7280;font-size:12px}

@media (max-width: 980px){
  .hero__grid{grid-template-columns:1fr;gap:16px}
  .hero__title{font-size:38px}
  .cards{grid-template-columns:1fr}
  .screens{grid-template-columns:1fr}
  .nav{display:none}
}