:root{
  --bg:#ffffff;
  --text:#1f2933;
  --muted:#667085;
  --line:#e5e7eb;
  --soft:#f6f7f8;
  --accent:#17324d;
  --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.75;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(var(--max),calc(100% - 40px));margin:0 auto}
header{
  position:sticky;top:0;z-index:10;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
}
.nav{
  min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px
}
.brand{font-size:20px;font-weight:700;letter-spacing:.04em}
.nav-links{display:flex;gap:24px;flex-wrap:wrap;font-size:14px}
.nav-links a:hover{opacity:.6}
.hero{padding:110px 0 96px;border-bottom:1px solid var(--line)}
.eyebrow{font-size:13px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
h1{font-size:clamp(38px,6vw,72px);line-height:1.18;margin:14px 0 26px;letter-spacing:-.02em}
.hero p{font-size:18px;max-width:720px;color:var(--muted)}
.actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}
.btn{
  display:inline-block;padding:12px 20px;border:1px solid var(--accent);
  border-radius:4px;font-weight:600
}
.btn.primary{background:var(--accent);color:#fff}
.section{padding:80px 0}
.section.soft{background:var(--soft)}
.section h2{font-size:32px;margin:0 0 14px}
.lead{color:var(--muted);max-width:760px;margin-bottom:36px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{border:1px solid var(--line);padding:28px;background:#fff;border-radius:6px}
.card h3{margin-top:0}
.meta{font-size:14px;color:var(--muted)}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:16px 10px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
.table th{width:180px;font-weight:600}
.notice{padding:18px 20px;border-left:4px solid var(--accent);background:var(--soft)}
footer{border-top:1px solid var(--line);padding:36px 0;color:var(--muted);font-size:14px}
.page-head{padding:74px 0 44px;border-bottom:1px solid var(--line)}
.page-head h1{font-size:44px;margin:8px 0 0}
.small{font-size:14px;color:var(--muted)}
@media(max-width:760px){
  .nav{align-items:flex-start;padding:18px 0}
  .nav-links{gap:12px 18px}
  .grid3{grid-template-columns:1fr}
  .hero{padding:76px 0 64px}
  .section{padding:58px 0}
  .table th{width:110px}
}

.hero-image{margin-top:36px;border-radius:8px;overflow:hidden;border:1px solid var(--line)}
.hero-image img{width:100%;height:clamp(280px,42vw,520px);object-fit:cover}
.card-img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:4px;margin-bottom:18px}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center}
.split img{width:100%;border-radius:6px;border:1px solid var(--line)}
@media(max-width:760px){.split{grid-template-columns:1fr}}