:root{--ink:#182230;--text:#475467;--muted:#667085;--line:#e4e7ec;--bg:#f8fafc;--accent:#2563eb}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Hiragino Sans","Yu Gothic",sans-serif;color:var(--ink);background:#fff;line-height:1.85}
a{color:var(--accent)}header{border-bottom:1px solid var(--line);background:#fff}.nav{max-width:960px;margin:auto;padding:17px 22px;display:flex;gap:18px;justify-content:space-between;align-items:center}.brand{font-weight:800}.links{display:flex;gap:16px;flex-wrap:wrap}.links a{text-decoration:none;color:var(--muted);font-size:14px}
main{max-width:960px;margin:auto;padding:58px 22px 76px}.hero{padding:18px 0 38px}.eyebrow{font-weight:750;color:var(--accent)}h1{font-size:clamp(32px,6vw,52px);line-height:1.3;margin:8px 0 18px}h2{font-size:24px;margin-top:44px;border-bottom:1px solid var(--line);padding-bottom:8px}h3{font-size:18px;margin-top:28px}p,li{color:var(--text)}.card{background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:24px;margin:22px 0}.notice{border-left:4px solid var(--accent);padding:12px 18px;background:#f8fafc}.button{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:10px 17px;border-radius:9px;margin:6px 8px 6px 0}.meta{color:var(--muted);font-size:14px}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;min-width:640px}th,td{border:1px solid var(--line);padding:12px;text-align:left;vertical-align:top;color:var(--text)}th{background:var(--bg);color:var(--ink)}
footer{border-top:1px solid var(--line)}.foot{max-width:960px;margin:auto;padding:28px 22px;color:var(--muted);font-size:14px}.foot a{color:var(--muted);margin-right:14px}
@media(max-width:640px){.nav{align-items:flex-start;flex-direction:column}.links{gap:10px}main{padding-top:38px}}