:root{
  --bg:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --line:#e5e7eb;
  --alt:#f9fafb;
  --primary:#111827;
  --primaryText:#ffffff;
  --ghost:#ffffff;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans JP","Hiragino Sans","Yu Gothic",sans-serif;color:var(--text);background:var(--bg);line-height:1.65;}
a{color:inherit;text-decoration:underline;text-underline-offset:3px;}
a.btn{text-decoration:none;}
.container{max-width:1060px;margin:0 auto;padding:0 16px;}
.section{padding:40px 0;border-top:1px solid var(--line);}
.section.alt{background:var(--alt);}
.section-head h1,.section-head h2{margin:0 0 8px 0;line-height:1.25;}
.section-head .muted{margin:0;}
.muted{color:var(--muted);}
.mini{margin:8px 0;color:var(--text);}
.lead{font-size:1.05rem;margin:10px 0 0 0;}
.site-header{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line);z-index:10;}
.header-inner{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:14px 0;}
.brand{display:flex;flex-direction:column;gap:2px;}
.brand-link{font-weight:800;text-decoration:none;}
.brand-sub{font-size:.82rem;color:var(--muted);}
.nav{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end;}
.nav a{text-decoration:none;color:var(--text);font-size:.92rem;padding:6px 8px;border-radius:8px;}
.nav a:hover{background:var(--alt);}
.hero{padding:40px 0 18px 0;}
.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0;}
.badge{font-size:.82rem;border:1px solid var(--line);padding:6px 10px;border-radius:999px;background:#fff;}
.cta-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;}
.btn{display:inline-block;padding:10px 14px;border-radius:12px;border:1px solid var(--line);font-weight:700;}
.btn.primary{background:var(--primary);color:var(--primaryText);border-color:var(--primary);}
.btn.ghost{background:#fff;color:var(--text);}
.btn:hover{opacity:.92;}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;margin:16px 0;}
.callout{border:1px solid var(--line);background:#fff;border-radius:16px;padding:14px;margin:16px 0;}
.grid-2{display:grid;grid-template-columns:repeat(2, minmax(0,1fr));gap:14px;}
.grid-3{display:grid;grid-template-columns:repeat(3, minmax(0,1fr));gap:14px;}
@media (max-width:860px){.grid-3{grid-template-columns:1fr;} .grid-2{grid-template-columns:1fr;} .nav{justify-content:flex-start;}}
.list{margin:10px 0 0 0;padding-left:18px;}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:16px;background:#fff;}
table.compare{border-collapse:separate;border-spacing:0;width:100%;}
table.compare th, table.compare td{padding:12px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left;}
table.compare tr:last-child th, table.compare tr:last-child td{border-bottom:none;}
table.compare thead th{position:sticky;top:0;background:#f3f4f6;z-index:1;}
.cta-band{display:flex;gap:14px;align-items:center;justify-content:space-between;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;margin-top:16px;flex-wrap:wrap;}
.cta-actions{display:flex;gap:10px;flex-wrap:wrap;}
.faq details{border:1px solid var(--line);border-radius:14px;background:#fff;margin:10px 0;overflow:hidden;}
.faq summary{cursor:pointer;padding:12px 14px;font-weight:800;list-style:none;}
.faq summary::-webkit-details-marker{display:none;}
.faq .faq-body{padding:0 14px 14px 14px;border-top:1px solid var(--line);}
.site-footer{border-top:1px solid var(--line);padding:22px 0;background:#fff;}
.footer-inner{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;}
.footer-links{display:flex;gap:12px;flex-wrap:wrap;}
.footer-links a{text-decoration:none;color:var(--muted);}
.note{font-size:.86rem;color:var(--muted);margin-top:10px;}