:root{--primary:#1E5FAE;--ink:#22282C;--muted:#5D6870;--border:#E1E6EA;--bg:#F7F9FA;font-family:Inter,Noto Sans JP,system-ui,sans-serif;color:var(--ink);background:var(--bg)}body{margin:0}main{max-width:920px;margin:auto;padding:72px 28px}.badge{display:inline-block;padding:8px 12px;border-radius:8px;background:var(--primary);color:#fff;font-weight:800}h1{margin-top:32px;font-size:38px}p{color:var(--muted)}section{margin-top:40px;padding:24px;border:1px solid var(--border);border-radius:14px;background:#fff}section h2{margin-top:0;font-size:18px}.error-boundary{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;min-height:100vh;text-align:center}.error-boundary button{padding:10px 20px;border-radius:8px;border:1px solid var(--border);background:#fff;font-weight:700}