:root{
  --bg:#f5f7fa;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --line:#e5e7eb;
  --brand:#1d4ed8;
  --brand2:#3730a3;
  --soft:#eef2ff;
  --soft2:#f9fafb;
  --radius:12px;
}
*{box-sizing:border-box}
body{
  font-family:system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--bg);
  margin:0;
  color:var(--text)
}
.container{
  max-width:1100px;
  margin:auto;
  padding:32px;
  background:var(--card)
}
@media (max-width:720px){.container{padding:20px}}
.bd-logo{width:28px;height:28px;color:var(--brand)}
.bd-header{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.bd-header a{color:inherit;text-decoration:none;display:flex;align-items:center;gap:12px}
.bd-tagline{font-size:13px;color:var(--muted)}
.bd-nav{margin-left:auto;display:flex;gap:14px;font-size:14px}
.bd-nav a{color:var(--muted);text-decoration:none}
.bd-nav a:hover{color:var(--text)}
.bd-nav a.active{color:var(--text);font-weight:700}
@media (max-width:720px){.bd-nav{display:none}}
.notice{margin:18px 0 26px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--soft2);font-size:14px}
.notice a{color:#2563eb;font-weight:700;text-decoration:none}
.notice a:hover{text-decoration:underline}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:16px;background:var(--card)}
.small{font-size:13px;color:var(--muted)}
.disclaimer{font-size:13px;color:var(--muted);margin-top:28px;background:var(--soft2);padding:14px;border-radius:12px;border:1px solid var(--line);line-height:1.5}
.bd-footer{margin-top:48px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.bd-footer a{color:var(--brand);font-weight:700;text-decoration:none}.bd-footer a:hover{text-decoration:underline}
.page-compact{max-width:720px;margin:0 auto;font-size:0.92rem;line-height:1.45}.page-compact h1{font-size:1.4rem;margin:0 0 0.6rem;color:var(--text)}.page-compact h2{font-size:1rem;margin-top:1.2rem;margin-bottom:0.3rem;color:var(--text)}.page-compact p{color:#4b5563;margin-bottom:0.6rem;line-height:1.5}.page-compact ul,.page-compact ol{padding-left:1rem;margin-bottom:0.6rem;color:#4b5563}.page-compact li{margin-bottom:0.25rem}@media (max-width:600px){.page-compact{font-size:0.88rem}.page-compact h1{font-size:1.25rem}}
.page-panel{background:var(--soft2);border:1px solid var(--line);padding:14px 16px;border-radius:12px;margin:18px 0}.page-panel p{margin:0 0 0.45rem}.page-panel p:last-child{margin-bottom:0}.page-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:18px 0}@media (max-width:720px){.page-grid{grid-template-columns:1fr}}.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.btn{display:inline-block;padding:10px 14px;border-radius:10px;background:var(--brand);color:#fff;text-decoration:none;font-weight:700;font-size:14px}.btn:hover{text-decoration:none;background:var(--brand2)}.btn.secondary{background:#111827;color:#fff}.btn.light{background:var(--soft);color:var(--brand2);border:1px solid #c7d2fe}.back{display:inline-block;margin-bottom:18px;font-size:14px;color:var(--brand);font-weight:700;text-decoration:none}.back:hover{text-decoration:underline}