:root{--bg:#f6f7f9;--card:#fff;--text:#111827;--muted:#6b7280;--line:#e5e7eb;--accent:#111827;--soft:#eef2f7;--ok:#166534;--warn:#92400e}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;background:var(--bg);color:var(--text);line-height:1.7}a{color:inherit}.wrap{width:min(1080px,92%);margin:auto}header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px}.brand{font-weight:800;text-decoration:none;font-size:1.15rem}.nav{display:flex;gap:14px;flex-wrap:wrap}.nav a{text-decoration:none;color:#374151;font-size:.94rem}.hero{padding:54px 0 28px}.hero h1{font-size:clamp(2rem,5vw,3.5rem);line-height:1.15;margin:0 0 16px}.hero p{max-width:760px;color:var(--muted);font-size:1.06rem}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;text-decoration:none;box-shadow:0 4px 18px rgba(17,24,39,.04)}.card h2,.card h3{margin-top:0}.tag{display:inline-block;background:var(--soft);padding:3px 9px;border-radius:999px;font-size:.8rem;color:#374151}.tool{display:grid;grid-template-columns:1fr .85fr;gap:22px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.field{margin-bottom:15px}.field label{display:block;font-weight:700;margin-bottom:5px}.field small{display:block;color:var(--muted);margin-top:4px}.field input,.field select{width:100%;padding:12px 13px;border:1px solid #cfd4dc;border-radius:10px;font-size:16px;background:white}.btn{width:100%;border:0;border-radius:12px;padding:13px 16px;font-weight:800;font-size:16px;background:var(--accent);color:#fff;cursor:pointer}.result{background:#111827;color:#fff;border-radius:18px;padding:22px;position:sticky;top:88px}.result .big{font-size:2rem;font-weight:900;margin:8px 0}.result dl{display:grid;grid-template-columns:1fr auto;gap:7px 14px}.result dt{color:#d1d5db}.result dd{margin:0;font-weight:700}.note{font-size:.9rem;color:var(--muted)}.content{padding:28px 0 52px}.content h2{margin-top:34px}.ad{border:1px dashed #c7cdd6;border-radius:14px;padding:24px;text-align:center;color:#9ca3af;background:#fff;margin:24px 0}.cta{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;margin-top:18px}.cta strong{display:block;margin-bottom:6px}.faq{margin-top:34px}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-top:10px}.faq summary{cursor:pointer;font-weight:700}.faq details p{margin:10px 0 0;color:var(--muted)}footer{border-top:1px solid var(--line);background:#fff;margin-top:56px;padding:30px 0;color:var(--muted);font-size:.9rem}.footerlinks{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:8px}@media(max-width:780px){.grid,.tool{grid-template-columns:1fr}.nav{display:none}.result{position:static}.hero{padding-top:34px}.card{padding:18px}}
.ad,.cta{display:none}.guide-list{margin:0;padding-left:1.4rem}.guide-list li{margin:.45rem 0}.guide-list a,.related a{font-weight:700}.example,.scope,.related{border-top:1px solid var(--line);margin-top:30px;padding-top:4px}.example strong{font-weight:800}