:root{
  --bg:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --border:#e5e7eb;
  --card:#ffffff;
  --shadow:0 6px 18px rgba(0,0,0,.06);
  --radius:16px;
  --max:1080px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Hiragino Sans","Noto Sans JP","Yu Gothic",sans-serif;line-height:1.65}
a{color:inherit}
.container{max-width:var(--max);margin:0 auto;padding:20px}
.skip{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip:focus{left:20px;top:20px;width:auto;height:auto;background:#fff;border:1px solid var(--border);padding:10px;border-radius:10px;z-index:10}
.site-header{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--border);z-index:20}
.brand{display:flex;flex-direction:column;gap:2px}
.brand__link{font-weight:800;text-decoration:none}
.brand__tag{font-size:.9rem;color:var(--muted)}
.nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.nav__link{font-size:.95rem;text-decoration:none;padding:8px 10px;border-radius:999px;border:1px solid transparent}
.nav__link:hover{border-color:var(--border)}
.nav__link--active{border-color:var(--border);background:#f9fafb}
.page-head{padding:14px 0 6px}
.page-head h1{margin:0 0 8px;font-size:1.7rem}
.lead{margin:0 0 12px;font-size:1.05rem}
.muted{color:var(--muted);margin:8px 0 0}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin:16px 0;box-shadow:var(--shadow)}
.card h2,.card h3{margin:0 0 10px}
.hr{border:none;border-top:1px solid var(--border);margin:16px 0}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.tile{border:1px solid var(--border);border-radius:14px;padding:14px;background:#fff}
.tile--link{text-decoration:none;display:block}
.tile--link:hover{border-color:#cbd5e1}
.tile h3,.tile h4,.tile h5{margin:0 0 6px}
.tile p{margin:0;color:var(--muted)}
.list{margin:10px 0 0;padding-left:18px}
.steps{margin:10px 0 0;padding-left:18px}
.cta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 14px;border-radius:999px;text-decoration:none;border:1px solid var(--border);font-weight:700}
.btn--primary{background:#111827;color:#fff;border-color:#111827}
.btn--primary:hover{opacity:.92}
.btn--ghost{background:#fff}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:14px}
.table{border-collapse:collapse;min-width:720px;width:100%}
.table th,.table td{border-bottom:1px solid var(--border);padding:12px;text-align:left;vertical-align:top}
.table thead th{background:#f9fafb}
.rank{display:flex;gap:14px;border:1px solid var(--border);border-radius:14px;padding:14px;margin:12px 0;background:#fff}
.rank__badge{flex:0 0 auto;font-weight:800;font-size:1rem;padding:8px 12px;border-radius:999px;background:#111827;color:#fff;height:fit-content}
.rank__title{margin:0 0 6px}
.rank__actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.mini-check{margin-top:10px;border-top:1px dashed var(--border);padding-top:10px}
.site-footer{border-top:1px solid var(--border);margin-top:28px}
.footer-links{display:flex;flex-wrap:wrap;gap:12px;margin:10px 0}
.footer-links a{text-decoration:none;color:var(--muted)}
.footer-links a:hover{color:var(--text)}
.footer-copy{color:var(--muted);margin:0 0 16px;font-size:.9rem}
@media (max-width:900px){
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .table{min-width:620px}
  .rank{flex-direction:column}
}