:root{--primary: #1a73e8;--primary-light: #e8f0fe;--danger: #d93025;--danger-light: #fce8e6;--success: #188038;--success-light: #e6f4ea;--warning: #f9ab00;--gray-100: #f8f9fa;--gray-200: #e8eaed;--gray-300: #dadce0;--gray-400: #bdc1c6;--gray-500: #9aa0a6;--gray-600: #80868b;--gray-700: #5f6368;--gray-800: #3c4043;--text: #202124;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);--shadow-lg: 0 4px 12px rgba(0,0,0,.1)}.survey-container{max-width:720px;margin:0 auto;padding:20px 16px 60px}.survey-header{background:linear-gradient(135deg,#1a73e8,#1557b0);color:#fff;padding:28px 24px;border-radius:var(--radius);margin-bottom:24px;box-shadow:var(--shadow)}.survey-header h1{font-size:1.4rem;font-weight:600;margin-bottom:8px;line-height:1.4}.survey-header p{font-size:.85rem;opacity:.9;line-height:1.6}.survey-header .note{margin-top:8px;font-size:.78rem;opacity:.8;padding:8px 12px;background:#ffffff1f;border-radius:6px}.question-card{background:#fff;border-radius:var(--radius);padding:20px 24px;margin-bottom:16px;box-shadow:var(--shadow);transition:box-shadow .2s}.question-card:hover{box-shadow:var(--shadow-lg)}.question-card.invalid{border-left:3px solid var(--danger)}.question-label{display:block;font-size:.9rem;font-weight:500;color:var(--text);margin-bottom:6px;line-height:1.5}.question-label .required{color:var(--danger);margin-left:2px}.question-label .sub{display:block;font-size:.78rem;font-weight:400;color:var(--gray-600);margin-top:2px}.question-hint{font-size:.78rem;color:var(--gray-600);margin-bottom:8px}select,input[type=number],input[type=text]{width:100%;padding:10px 12px;border:1px solid var(--gray-300);border-radius:6px;font-size:.9rem;color:var(--text);background:#fff;transition:border-color .2s,box-shadow .2s;outline:none;font-family:inherit}select:focus,input:focus{border-color:var(--primary);box-shadow:0 0 0 2px #1a73e826}input.invalid-field,select.invalid-field{border-color:var(--danger);background-color:var(--danger-light)}input.invalid-field:focus,select.invalid-field:focus{box-shadow:0 0 0 2px #d9302526}.error-text{color:var(--danger);font-size:.78rem;margin-top:4px}.recruit-group{display:grid;grid-template-columns:1fr 1fr;gap:10px}.recruit-item{display:flex;flex-direction:column}.recruit-item label{font-size:.78rem;color:var(--gray-700);margin-bottom:4px}.recruit-total{grid-column:1 / -1;display:flex;align-items:center;padding:8px 12px;background:var(--primary-light);border-radius:6px;font-size:.85rem;color:var(--primary);font-weight:500}.recruit-total span{margin-right:8px}.recruit-total .total-value{font-weight:700;font-size:1rem}.radio-group{display:flex;gap:12px;flex-wrap:wrap}.radio-option{display:flex;align-items:center;padding:8px 16px;border:1px solid var(--gray-300);border-radius:6px;cursor:pointer;transition:all .2s;font-size:.88rem;-webkit-user-select:none;user-select:none}.radio-option:hover{border-color:var(--primary);background:var(--primary-light)}.radio-option.selected{border-color:var(--primary);background:var(--primary-light);color:var(--primary);font-weight:500}.radio-option input{display:none}.radio-option.invalid-field{border-color:var(--danger);background:var(--danger-light)}.shortage-group{display:flex;flex-direction:column;gap:10px;margin-top:12px;padding:16px;background:var(--gray-100);border-radius:6px}.shortage-group label{font-size:.85rem;font-weight:500;color:var(--gray-700)}.shortage-group input{background:#fff}.difficulty-group{display:flex;gap:8px;flex-wrap:wrap}.difficulty-option{display:flex;align-items:center;justify-content:center;padding:10px 14px;border:1px solid var(--gray-300);border-radius:100px;cursor:pointer;transition:all .2s;font-size:.85rem;-webkit-user-select:none;user-select:none;min-width:60px}.difficulty-option:hover{border-color:var(--primary);background:var(--primary-light)}.difficulty-option.selected{border-color:var(--primary);background:var(--primary);color:#fff}.difficulty-option input{display:none}.difficulty-option.invalid-field{border-color:var(--danger);background:var(--danger-light);color:var(--danger)}.form-actions{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap}.btn{padding:12px 28px;border:none;border-radius:6px;font-size:.95rem;font-weight:500;cursor:pointer;transition:all .2s;font-family:inherit}.btn-primary{background:var(--primary);color:#fff;flex:1;min-width:140px}.btn-primary:hover:not(:disabled){background:#1557b0;box-shadow:0 2px 8px #1a73e84d}.btn-secondary{background:var(--gray-100);color:var(--gray-800);border:1px solid var(--gray-300)}.btn-secondary:hover:not(:disabled){background:var(--gray-200)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn:disabled .spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite;margin-right:6px;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}.submit-error{padding:12px 16px;background:var(--danger-light);color:var(--danger);border-radius:6px;font-size:.85rem;margin-top:16px}.submit-success{text-align:center;padding:60px 24px}.submit-success .icon{width:64px;height:64px;margin:0 auto 20px;background:var(--success-light);border-radius:50%;display:flex;align-items:center;justify-content:center}.submit-success .icon svg{width:32px;height:32px;fill:var(--success)}.submit-success h2{font-size:1.3rem;color:var(--text);margin-bottom:8px}.submit-success p{color:var(--gray-600);font-size:.9rem}.saving-indicator{position:fixed;bottom:20px;right:20px;background:var(--gray-800);color:#fff;padding:8px 16px;border-radius:100px;font-size:.78rem;opacity:0;transition:opacity .3s;pointer-events:none}.saving-indicator.visible{opacity:.85}@media (max-width: 600px){.survey-container{padding:12px 10px 40px}.survey-header{padding:20px 16px}.survey-header h1{font-size:1.15rem}.question-card{padding:16px}.recruit-group{grid-template-columns:1fr}.radio-group{flex-direction:column}.difficulty-group{gap:6px}.difficulty-option{padding:8px 12px;font-size:.8rem;min-width:50px}.btn{padding:10px 20px;font-size:.88rem}.form-actions{flex-direction:column}.btn-primary{min-width:auto}}