:root{--bg:#f5f6f8;--panel:#fff;--text:#1a1d21;--muted:#5c646e;--border:#d8dce1;--accent:#1f6feb;--accent-text:#fff;--danger:#b42318;--ok:#10643a;--radius:8px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Hiragino Kaku Gothic ProN,Noto Sans JP,Meiryo,sans-serif;font-size:16px;line-height:1.7}main{max-width:720px;margin:0 auto;padding:32px 20px 64px}h1{margin:0 0 8px;font-size:22px}h2{margin:0 0 12px;font-size:17px}.lead{color:var(--muted);margin:0 0 24px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:20px;padding:24px}.field{margin-bottom:16px;display:block}.field>span{margin-bottom:6px;font-weight:600;display:block}.hint{color:var(--muted);margin-top:4px;font-size:13px;font-weight:400;display:block}input[type=email],input[type=password],input[type=text]{width:100%;color:var(--text);border:1px solid 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