:root{
  --accent-color:#e94560; --bg-dark:#0f172a; --bg-light:#f8fafc;
  --primary-accent:#16213e; --primary-dark:#1a1a2e; --secondary-dark:#0f3460;
  --text-gray:#64748b; --text-light:#ffffff; --line:#e2e8f0; --ink:#1e293b;
}
*{box-sizing:border-box}
body{
  margin:0; background:var(--bg-light); color:var(--ink);
  font-family:"Noto Sans JP",-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;
  font-size:16px; line-height:1.9; -webkit-text-size-adjust:100%;
}
a{color:var(--secondary-dark)}
a:hover{color:var(--accent-color)}

header.top{
  background:var(--primary-dark); color:#fff; padding:16px 24px;
  display:flex; align-items:center; gap:20px; flex-wrap:wrap;
}
header.top .logo{
  font-family:"Poppins",sans-serif; font-weight:900; font-size:22px;
  color:#fff; text-decoration:none; letter-spacing:.06em;
}
header.top nav{margin-left:auto; display:flex; gap:18px; font-size:14px; flex-wrap:wrap}
header.top nav a{color:#cbd5e1; text-decoration:none}
header.top nav a:hover{color:#fff}

.wrap{max-width:860px; margin:0 auto; padding:48px 24px 80px}
h1{
  font-family:"Shippori Mincho B1",serif; font-size:30px; line-height:1.5;
  margin:0 0 8px; letter-spacing:.02em;
}
.lead{color:var(--text-gray); font-size:14px; margin:0 0 40px}
h2{
  font-size:19px; margin:44px 0 14px; padding-left:14px;
  border-left:4px solid var(--accent-color); line-height:1.5;
}
h3{font-size:16px; margin:26px 0 10px}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px; padding-left:1.5em}
li{margin-bottom:8px}
.note{
  background:#fff; border:1px solid var(--line); border-radius:6px;
  padding:16px 20px; margin:0 0 24px; font-size:14px;
}
.note strong{color:var(--secondary-dark)}
table{border-collapse:collapse; width:100%; margin:0 0 20px; font-size:15px; background:#fff}
th,td{border:1px solid var(--line); padding:11px 14px; text-align:left; vertical-align:top}
th{background:#f1f5f9; width:34%; font-weight:600; white-space:nowrap}
.tbl-scroll{overflow-x:auto}
.updated{color:var(--text-gray); font-size:13px; text-align:right; margin-top:48px}

footer{background:var(--primary-dark); color:#94a3b8; padding:32px 24px; text-align:center; font-size:13px}
footer a{color:#cbd5e1; text-decoration:none; margin:0 10px}
footer a:hover{color:#fff}
footer .copyright{margin:16px 0 0; font-size:12px}

@media(max-width:640px){
  body{font-size:15px}
  .wrap{padding:32px 18px 60px}
  h1{font-size:24px}
  h2{font-size:17px}
  th,td{display:block; width:auto; white-space:normal}
  th{border-bottom:none}
  td{border-top:none}
}