:root{--primary-color: #1890ff;--primary-hover: #40a9ff;--secondary-color: #52c41a;--dark-color: #1f2937;--light-gray: #f5f7fa;--text-primary: #262626;--text-secondary: #595959;--text-muted: #8c8c8c;--border-light: #f0f0f0;--shadow-light: 0 2px 8px rgba(0, 0, 0, .06);--shadow-medium: 0 4px 12px rgba(0, 0, 0, .1);--transition: all .2s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:PingFang SC,Helvetica Neue,Helvetica,Arial,sans-serif;color:var(--text-primary);background-color:var(--light-gray);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.policy-assistant{min-height:100vh;display:flex;flex-direction:column}.header{background:#fff;border-bottom:1px solid #f0f0f0;position:sticky;top:0;z-index:1000}.header-container{max-width:none;margin:0;padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between}.header-left{display:flex;align-items:center}.logo-section{display:flex;align-items:center;gap:8px}.logo-link{display:flex;align-items:center;gap:8px;text-decoration:none;transition:var(--transition)}.logo-link:hover{transform:translateY(-1px)}.logo-icon{font-size:28px;color:#1890ff;font-style:normal}.logo{font-size:28px;font-weight:700;color:#1890ff;margin:0}.header-right{display:flex;align-items:center;gap:8px}.header-btn{display:flex;align-items:center;gap:6px;background:none;border:none;color:var(--text-muted);font-size:14px;padding:10px 14px;border-radius:10px;cursor:pointer;transition:var(--transition);font-weight:500;text-decoration:none}.header-btn:hover{color:var(--primary-color);background:linear-gradient(135deg,#165dff14,#165dff1f);transform:translateY(-1px)}.lang-btn{background:linear-gradient(135deg,#f0f5ff,#e6f7ff);color:var(--primary-color);border:1px solid rgba(24,144,255,.2);font-weight:600}.lang-btn:hover{background:linear-gradient(135deg,#bae7ff,#91d5ff);border-color:var(--primary-color);box-shadow:0 2px 8px #1890ff4d}.btn-icon{font-size:14px;font-style:normal}.auth-section{display:flex;align-items:center;margin-left:16px;padding-left:16px;border-left:1px solid #f0f0f0;min-width:120px}.auth-loading{display:flex;align-items:center;gap:8px;color:var(--text-muted)}.loading-spinner-small{width:16px;height:16px;border:2px solid #f3f3f3;border-top:2px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-text{font-size:14px}.auth-user{display:flex;align-items:center;gap:12px}.user-info{display:flex;align-items:center;gap:6px;padding:6px 10px;background:#1890ff1a;border-radius:6px}.user-avatar{font-size:16px;font-style:normal}.user-name{font-size:14px;font-weight:500;color:var(--primary-color);max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.logout-btn{display:flex;align-items:center;gap:6px;background:linear-gradient(135deg,#ff4d4f,#ff7875);color:#fff;border:none;padding:8px 12px;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500;transition:var(--transition);box-shadow:0 2px 4px #ff4d4f4d}.logout-btn:hover:not(:disabled){background:linear-gradient(135deg,#ff7875,#ff4d4f);transform:translateY(-1px);box-shadow:0 4px 8px #ff4d4f66}.logout-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.logout-icon{font-size:12px;font-style:normal}.login-btn{display:flex;align-items:center;gap:6px;background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-hover) 100%);color:#fff;border:none;padding:8px 16px;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500;transition:var(--transition);box-shadow:0 2px 6px #1890ff4d}.login-btn:hover{background:linear-gradient(135deg,var(--primary-hover) 0%,var(--primary-color) 100%);transform:translateY(-1px);box-shadow:0 4px 12px #1890ff66}.login-icon{font-size:12px;font-style:normal}.auth-error{display:flex;align-items:center;gap:8px;color:#ff4d4f;font-size:12px}.error-text{max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.retry-btn{background:#ff4d4f;color:#fff;border:none;padding:4px 8px;border-radius:4px;cursor:pointer;font-size:11px;transition:var(--transition)}.retry-btn:hover{background:#ff7875}.main{flex:1;min-height:calc(100vh - 130px)}.footer{background:#fff;border-top:1px solid var(--border-light);padding:24px 0;margin-top:auto}.footer-container{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}.copyright{font-size:14px;color:var(--text-muted);margin:0}.footer-right{display:flex;gap:24px}.footer-link{font-size:14px;color:var(--text-muted);text-decoration:none;transition:var(--transition);font-weight:500;cursor:pointer}.footer-link:hover{color:var(--primary-color)}.logout-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:2000}.logout-modal{background:#fff;border-radius:8px;padding:24px;max-width:400px;width:90%;box-shadow:0 8px 32px #0003}.modal-header h3{margin:0 0 16px;color:var(--text-primary);font-size:18px}.modal-body p{margin:0 0 24px;color:var(--text-secondary);line-height:1.6}.modal-actions{display:flex;gap:12px;justify-content:flex-end}.cancel-btn,.confirm-btn{padding:8px 16px;border:none;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500;transition:var(--transition)}.cancel-btn{background:#f5f5f5;color:var(--text-secondary)}.cancel-btn:hover{background:#e6e6e6}.confirm-btn{background:#ff4d4f;color:#fff}.confirm-btn:hover:not(:disabled){background:#ff7875}.confirm-btn:disabled{opacity:.6;cursor:not-allowed}.notification{position:fixed;top:20px;right:20px;background:#fff;border-radius:8px;box-shadow:0 4px 12px #0000001a;border-left:4px solid;z-index:3000;min-width:300px;animation:slideIn .3s ease-out}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.notification-success{border-left-color:#52c41a}.notification-error{border-left-color:#ff4d4f}.notification-warning{border-left-color:#faad14}.notification-info{border-left-color:#1890ff}.notification-content{display:flex;align-items:center;gap:8px;padding:16px}.notification-icon{font-size:16px;font-style:normal}.notification-message{flex:1;font-size:14px;color:var(--text-primary)}.notification-close{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:16px;padding:0;width:20px;height:20px;display:flex;align-items:center;justify-content:center}.notification-close:hover{color:var(--text-primary)}@media (max-width: 768px){.header-container{padding:0 16px}.header-right{gap:6px}.header-btn span{display:none}.lang-btn span{display:inline}.auth-section{margin-left:8px;padding-left:8px;min-width:auto}.user-info{padding:4px 8px}.user-name{max-width:60px}.logout-btn span,.login-btn span{display:none}.logout-btn,.login-btn{padding:8px;min-width:36px;justify-content:center}.footer-container{flex-direction:column;text-align:center}.footer-right{gap:16px}.notification{right:10px;min-width:calc(100vw - 20px);max-width:350px}}