.login-shell{background:linear-gradient(135deg,#1f4b8f,#2b6cb0,#1c3f7a);justify-content:center;align-items:center;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif;display:flex}.login-card{box-sizing:border-box;background:#fff;border-radius:12px;width:100%;max-width:360px;padding:32px 28px;box-shadow:0 12px 32px #0f172a40}.login-card h1{color:#1e293b;text-align:center;margin:0 0 6px;font-size:18px}.login-subtitle{color:#64748b;text-align:center;margin:0 0 24px;font-size:13px}.login-field{color:#334155;flex-direction:column;gap:6px;margin-bottom:16px;font-size:13px;font-weight:600;display:flex}.login-field input{background:#eef1f6;border:1px solid #cbd5e1;border-radius:8px;height:40px;padding:0 12px;font-size:14px}.login-field input:focus{outline:2px solid var(--brand-500,#1f4b8f);outline-offset:1px;background:#fff}.login-error{color:#dc2626;margin:-6px 0 14px;font-size:13px}.login-submit{width:100%;margin-top:4px}.login-hint{color:#94a3b8;text-align:center;margin:16px 0 0;font-size:12px}