:root{
  --ink:#1c2230;
  --muted:#5c6678;
  --line:#e3e7ee;
  --bg:#ffffff;
  --soft:#f6f8fb;
  --accent:#1a5fd0;
  --accent-soft:#eaf1fd;
  --maxw:820px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;
  line-height:1.85;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent)}
a:hover{opacity:.75}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

header.site{
  border-bottom:1px solid var(--line);
  padding:18px 0;
  position:sticky;top:0;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(8px);z-index:10;
}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{font-weight:700;font-size:19px;letter-spacing:.04em;text-decoration:none;color:var(--ink)}
.brand span{color:var(--accent)}
nav a{margin-left:18px;font-size:14px;text-decoration:none;color:var(--muted)}
nav a:hover{color:var(--accent);opacity:1}

.hero{padding:64px 0 52px;border-bottom:1px solid var(--line)}
.hero h1{font-size:30px;line-height:1.5;margin:0 0 18px;letter-spacing:.01em}
.hero p{color:var(--muted);margin:0 0 8px;font-size:16px}
.tag{
  display:inline-block;background:var(--accent-soft);color:var(--accent);
  font-size:13px;padding:5px 12px;border-radius:999px;margin-bottom:20px;font-weight:600;
}

section{padding:46px 0;border-bottom:1px solid var(--line)}
section:last-of-type{border-bottom:0}
h2{font-size:20px;margin:0 0 18px;letter-spacing:.01em}
h3{font-size:16px;margin:26px 0 8px}
p{margin:0 0 14px}

.cards{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.card{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:20px}
.card h3{margin:0 0 6px;font-size:16px}
.card p{margin:0;color:var(--muted);font-size:14.5px}

table.info{width:100%;border-collapse:collapse;font-size:15px}
table.info th,table.info td{
  text-align:left;vertical-align:top;padding:12px 10px;border-bottom:1px solid var(--line);
}
table.info th{width:34%;color:var(--muted);font-weight:600;white-space:nowrap}

.legal h2{font-size:18px;margin-top:34px}
.legal ol{padding-left:1.3em}
.legal li{margin-bottom:6px}
.legal .lead{color:var(--muted)}
.updated{color:var(--muted);font-size:14px;margin-top:34px}

footer.site{padding:30px 0 46px;color:var(--muted);font-size:14px}
footer.site a{margin-right:16px;text-decoration:none}
.copy{margin-top:12px;font-size:13px}

@media (max-width:600px){
  .hero{padding:44px 0 36px}
  .hero h1{font-size:24px}
  nav a{margin-left:12px;font-size:13px}
  table.info th{width:100%;display:block;border-bottom:0;padding-bottom:0}
  table.info td{display:block;padding-top:4px}
}