:root{font-family:system-ui,-apple-system,Segoe UI,Microsoft JhengHei,sans-serif;color:#172033;background:#f3f6fb;line-height:1.6}*{box-sizing:border-box}body{margin:0}.container{width:min(880px,100%);margin:0 auto;padding:36px 20px}.header{margin-bottom:28px}h1{font-size:clamp(26px,5vw,36px);margin-bottom:8px}h2{margin-top:0}.subtitle,.hint,footer{color:#5b677a}.badge{display:inline-block;padding:4px 12px;border-radius:20px;background:#dbeafe;color:#1d4ed8;font-size:14px}.card{background:#fff;padding:24px;margin-bottom:20px;border:1px solid #e2e8f0;border-radius:14px;box-shadow:0 4px 16px #0f172a0a}.notice{padding:12px 16px;background:#fff7ed;border-left:4px solid #f59e0b;border-radius:6px;color:#92400e}.actions{display:flex;flex-wrap:wrap;gap:12px}button{border:none;border-radius:8px;padding:12px 18px;background:#2563eb;color:#fff;font:inherit;cursor:pointer}button:hover{background:#1d4ed8}button:focus-visible{outline:3px solid #93c5fd;outline-offset:3px}button.secondary{background:#e2e8f0;color:#172033}button.secondary:hover{background:#cbd5e1}li{margin-bottom:6px}.hint,.login-form{display:grid;gap:12px;max-width:420px}.login-form label{font-weight:600}.login-form input{width:100%;padding:12px;border:1px solid #cbd5e1;border-radius:8px;background:#fff;color:#172033;font:inherit}.login-form input:focus-visible{outline:3px solid #93c5fd;outline-offset:2px}.login-form button{margin-top:8px}button:disabled{opacity:.6;cursor:not-allowed}.error-message{padding:12px;border-radius:8px;background:#fef2f2;color:#b91c1c}.login-actions{margin-top:20px}.account-email{overflow-wrap:anywhere}footer{font-size:14px}