:root{
  --bg:#0b1220;
  --card:#101a2e;
  --text:#eaf0ff;
  --muted:#b8c3e1;
  --line:rgba(234,240,255,.14);
  --accent:#7ad9ff;
  --accent2:#9bffcf;
  --shadow:0 20px 60px rgba(0,0,0,.35);
  --radius:16px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Noto Sans JP", system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  color:var(--text);
  background:radial-gradient(1200px 700px at 20% 0%, rgba(122,217,255,.18), transparent 60%),
             radial-gradient(900px 700px at 80% 10%, rgba(155,255,207,.14), transparent 55%),
             var(--bg);
  line-height:1.7;
}

a{color:inherit}
.container{max-width:1100px;margin:0 auto;padding:0 18px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter: blur(10px);
  background:rgba(11,18,32,.62);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 0;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand-logo{height:30px;width:auto;display:block}

.nav{display:flex;gap:14px;align-items:center}
.nav-link{
  text-decoration:none;
  padding:10px 10px;
  border-radius:12px;
  color:var(--muted);
}
.nav-link:hover{background:rgba(234,240,255,.06);color:var(--text)}
.nav-link.is-active{color:var(--text);background:rgba(122,217,255,.12)}
.nav-cta{
  background:linear-gradient(90deg, rgba(122,217,255,.22), rgba(155,255,207,.18));
  border:1px solid rgba(122,217,255,.25);
  color:var(--text);
}

.nav-toggle{
  display:none;
  background:transparent;border:1px solid var(--line);
  color:var(--text);
  width:44px;height:44px;border-radius:12px;
}

.mobile-nav{
  border-top:1px solid var(--line);
  padding:10px 18px 16px;
}
.mobile-link{
  display:block;
  padding:12px 10px;
  border-radius:12px;
  color:var(--muted);
  text-decoration:none;
}
.mobile-link:hover{background:rgba(234,240,255,.06);color:var(--text)}
.mobile-link.is-active{color:var(--text);background:rgba(122,217,255,.12)}
.mobile-cta{border:1px solid rgba(122,217,255,.25)}

/* Hero */
.hero{padding:56px 0 26px}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:center}
.eyebrow{
  display:inline-block;
  padding:6px 10px;border:1px solid var(--line);
  border-radius:999px;
  color:var(--muted);font-weight:700;letter-spacing:.06em;
  background:rgba(234,240,255,.04);
}
.hero-title{margin:14px 0 10px;font-size:34px;line-height:1.25}
.hero-lead{margin:0 0 16px;color:var(--muted)}
.hero-media{
  background:linear-gradient(180deg, rgba(234,240,255,.06), rgba(234,240,255,.02));
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.hero-image{width:100%;height:320px;object-fit:cover;display:block}

/* Search */
.search{
  display:flex;align-items:center;gap:10px;
  padding:12px 14px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(234,240,255,.04);
  margin:16px 0 14px;
}
.search i{color:var(--muted)}
.search input{
  width:100%;
  background:transparent;
  border:0;outline:0;
  color:var(--text);
  font-size:14px;
}

/* Chips */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  cursor:pointer;
  border:1px solid var(--line);
  background:rgba(234,240,255,.04);
  color:var(--muted);
  padding:9px 12px;
  border-radius:999px;
  font-weight:700;
}
.chip:hover{color:var(--text);background:rgba(234,240,255,.06)}
.chip.is-active{
  color:var(--text);
  border-color:rgba(122,217,255,.35);
  background:rgba(122,217,255,.12);
}

/* FAQ */
.faq{padding:10px 0 56px}
.faq-grid{display:grid;gap:12px}
.faq-item{
  border:1px solid var(--line);
  background:rgba(16,26,46,.55);
  border-radius:var(--radius);
  overflow:hidden;
}
.faq-q{
  width:100%;
  display:flex;justify-content:space-between;align-items:center;
  gap:14px;
  background:transparent;border:0;
  color:var(--text);
  padding:16px 16px;
  font-size:15px;
  cursor:pointer;
}
.faq-q i{color:var(--muted);font-size:20px}
.faq-a{
  padding:0 16px 16px;
  color:var(--muted);
  border-top:1px solid var(--line);
}
.faq-a p{margin:12px 0 0}
.hint{margin-top:10px}
.note{opacity:.95}

/* Bottom cards */
.faq-bottom{
  margin-top:18px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}
.card{
  border:1px solid var(--line);
  background:rgba(16,26,46,.55);
  border-radius:var(--radius);
  padding:18px;
}
.card h2{margin:0 0 8px;font-size:18px}
.card p{margin:0 0 14px;color:var(--muted)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 14px;
  border-radius:14px;
  text-decoration:none;
  font-weight:900;
  background:linear-gradient(90deg, rgba(122,217,255,.28), rgba(155,255,207,.22));
  border:1px solid rgba(122,217,255,.25);
}
.btn-ghost{
  background:rgba(234,240,255,.04);
  border:1px solid var(--line);
}

/* Footer */
.site-footer{
  border-top:1px solid var(--line);
  padding:28px 0 38px;
  background:rgba(11,18,32,.55);
}
.footer-inner{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-start;justify-content:space-between}
.footer-logo{height:26px;width:auto;display:block}
.footer-text{margin:8px 0 0;color:var(--muted)}
.footer-links{display:flex;gap:14px;flex-wrap:wrap}
.footer-links a{color:var(--muted);text-decoration:none}
.footer-links a:hover{color:var(--text)}
.copyright{width:100%;margin:14px 0 0;color:rgba(184,195,225,.75);font-size:12px}

/* Responsive */
@media (max-width: 900px){
  .hero-inner{grid-template-columns:1fr}
  .hero-image{height:240px}
  .faq-bottom{grid-template-columns:1fr}
  .nav{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
}