:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--fg:#111827;--muted:#4b5563;--line:#d1d5db;--accent:#1d4ed8;--danger:#b91c1c;--ok:#166534}*{box-sizing:border-box}body{color:var(--fg);background:#f9fafb;margin:0;font-family:Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,Noto Sans JP,sans-serif;line-height:1.7}.page{max-width:880px;margin:0 auto;padding:24px 16px 64px}.card{border:1px solid var(--line);background:#fff;border-radius:8px;margin:16px 0;padding:16px}h1{margin:0 0 8px;font-size:20px}h2{margin:0 0 8px;font-size:17px}.muted{color:var(--muted);font-size:14px}.notice{border-left:4px solid var(--accent);background:#eff6ff;padding:8px 12px;font-size:14px}.error{color:var(--danger);font-size:14px}.success{color:var(--ok);font-weight:600}label{margin:12px 0 4px;font-size:14px;display:block}input[type=text],input[type=email],textarea{border:1px solid var(--line);border-radius:6px;width:100%;padding:8px 10px;font-size:16px}textarea{min-height:96px}.code-input{letter-spacing:.2em;text-transform:uppercase;max-width:240px}.choices{flex-wrap:wrap;gap:12px;display:flex}.choices label{align-items:center;gap:6px;margin:4px 0;display:flex}button{border:1px solid var(--accent);background:var(--accent);color:#fff;cursor:pointer;border-radius:6px;margin-top:16px;padding:10px 20px;font-size:16px}button:disabled{opacity:.6;cursor:wait}.doc-frame{border:1px solid var(--line);background:#fff;border-radius:6px;padding:12px;overflow-x:auto}.meta-row{color:var(--muted);word-break:break-all;margin:8px 0;font-size:13px}