:root{
  --bg:#f7f9fc;
  --card:#ffffff;
  --text:#1f2937;      /* 濃いグレー */
  --muted:#6b7280;     /* 薄いグレー */
  --line:#e5e7eb;
  --accent:#2563eb;   /* 青 */
  --accent-soft:#eff6ff;
  --radius:14px;
  --max:980px;
}

/* Reset */
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: system-ui, -apple-system, "Segoe UI", Roboto,
    "Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic","Meiryo",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.wrap{
  max-width:var(--max);
  margin:0 auto;
  padding:0 16px;
}

/* Header */
.topbar{
  position:sticky;
  top:0;
  background:#ffffffcc;
  backdrop-filter: blur(6px);
  border-bottom:1px solid var(--line);
  z-index:50;
}
.topbar .inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:10px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
}
.logo{
  width:32px;
  height:32px;
  border-radius:8px;
  background:var(--accent);
}
.brand .name{
  font-weight:700;
}
.brand .sub{
  display:block;
  font-size:12px;
  color:var(--muted);
  margin-top:-2px;
}
.nav{
  display:flex;
  gap:10px;
  align-items:center;
}
.nav a{
  font-size:13px;
  /* color:var(--muted); */
  padding:6px 8px;
  border-radius:8px;
}
.nav a:hover{
  background:var(--accent-soft);
  color:var(--accent);
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:12px 16px;
  border-radius:12px;
  font-weight:700;
  border:1px solid var(--accent);
  background:var(--accent);
  color:#fff;
}
.btn:hover{opacity:.9}
.btn.secondary{
  background:#fff;
  color:var(--accent);
  border-color:var(--accent);
}

/* Hero */
.hero{
  padding:40px 0 24px;
}
.hero .grid{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:16px;
}
@media (max-width:900px){
  .hero .grid{grid-template-columns:1fr}
}

.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
}

.kicker{
  display:inline-block;
  font-size:12px;
  color:var(--accent);
  background:var(--accent-soft);
  padding:6px 10px;
  border-radius:999px;
  margin-bottom:10px;
}

h1{
  font-size:clamp(26px,3vw,40px);
  line-height:1.25;
  margin:0 0 12px;
}
.lead{
  color:var(--muted);
  font-size:15px;
}

.ctaRow{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:16px;
}

.points{
  list-style:none;
  padding:0;
  margin:18px 0 0;
  display:grid;
  gap:8px;
}
.points li{
  font-size:14px;
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fafafa;
}

/* Sections */
section{
  padding:32px 0;
}
.secHead h2{
  font-size:22px;
  margin:0 0 6px;
}
.secHead p{
  margin:0;
  color:var(--muted);
}

/* Layout blocks */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.cols{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
@media (max-width:900px){
  .split,.cols{grid-template-columns:1fr}
}

.box h3{
  font-size:16px;
  margin:0 0 8px;
}
.box p{
  font-size:14px;
  color:var(--muted);
}
.list{
  margin:10px 0 0;
  padding-left:18px;
  font-size:14px;
  color:var(--muted);
}

/* FAQ */
.faq details{
  border:1px solid var(--line);
  border-radius:12px;
  padding:12px 14px;
  margin-bottom:10px;
  background:#fff;
}
.faq summary{
  font-weight:700;
  cursor:pointer;
}
.faq p{
  margin:10px 0 0;
  font-size:14px;
  color:var(--muted);
}

/* Contact */
.contact .row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:16px;
}

/* Footer */
footer{
  border-top:1px solid var(--line);
  padding:24px 0 32px;
  font-size:13px;
  color:var(--muted);
}
.hr{
  height:1px;
  background:var(--line);
  margin:20px 0;
}

/* Sticky CTA */
.sticky{
  position:fixed;
  left:0;
  right:0;
  bottom:12px;
  z-index:60;
}
.sticky .wrap{
  display:flex;
  justify-content:center;
}
.sticky .bar{
  background:#ffffffee;
  border:1px solid var(--line);
  border-radius:14px;
  padding:10px 12px;
  display:flex;
  gap:10px;
  align-items:center;
  justify-content:space-between;
  max-width:var(--max);
  width:calc(100% - 24px);
}
.sticky .text{
  font-size:13px;
  color:var(--muted);
}
@media (max-width:560px){
  .sticky .bar{
    flex-direction:column;
    align-items:stretch;
  }
}