:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:block;min-width:320px;min-height:100vh;width:100%}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--primary: #4A9B8E;--primary-light: #6BB6A8;--primary-lighter: #A8D5CE;--primary-dark: #329085;--success: #52C785;--warning: #F39C12;--danger: #E74C3C;--info: #7BC4B8;--text-primary: #2C3E50;--text-secondary: #7F8C8D;--border: #BDC3C7;--white: #FFFFFF;--bg-primary: #FFFFFF;--bg-secondary: #F8F9FA;--bg-light: #F8F9FA;--secondary: #7F8C8D;--dark: #2C3E50;--light: #F8F9FA;--font-family-primary:"Noto Sans TC","Helvetica", "Arial","LiHei Pro","微軟正黑體", sans-serif;--font-family-mono: "Roboto Mono", monospace;--font-family-en: "Inter", "Helvetica Neue", sans-serif;--spacing-xs: 8px;--spacing-sm: 16px;--spacing-md: 24px;--spacing-lg: 32px;--spacing-xl: 48px;--spacing-xxl: 64px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .1);--shadow-md: 0 4px 20px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .08)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-family-primary);background-color:var(--bg-secondary);color:var(--text-primary);line-height:1.6;font-size:14px}.container{max-width:1400px;margin:0 auto;padding:20px;animation:fadeIn .6s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.header{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--white);padding:var(--spacing-lg) 0;margin-bottom:var(--spacing-lg);border-radius:var(--radius-lg);text-align:center;box-shadow:var(--shadow-md);position:relative}.header h1{font-size:28px;margin-bottom:.75rem;font-weight:700;letter-spacing:-.02em;text-shadow:2px 2px 8px rgba(0,0,0,.4)}.header:after{content:"";position:absolute;bottom:-10px;left:50%;transform:translate(-50%);width:100px;height:3px;background:linear-gradient(90deg,var(--primary-light),var(--info));border-radius:2px}.header 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24px;height:56px}.menu-icon{width:22px;height:22px;font-size:18px;margin-right:18px}.menu-text{font-size:15px}}@media (max-width: 480px){.app-layout{grid-template-columns:1fr;grid-template-areas:"nav" "main"}.sidebar{position:fixed;top:70px;left:0;width:100%;height:calc(100vh - 70px);transform:translate(-100%);transition:transform .3s ease;z-index:1000;background:var(--white);box-shadow:var(--shadow-lg)}.menu-item{padding:20px 24px;height:60px}.menu-icon{width:24px;height:24px;font-size:20px;margin-right:20px}.menu-text{font-size:16px}}.content-wrapper{width:100%;max-width:100%;margin:0 auto;padding:0 1rem}.content-section{display:none}.content-section.active{display:block;min-height:700px;padding-bottom:var(--spacing-lg)}.section{display:none;padding:20px;background:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a;margin-bottom:20px}.section.active{display:block}#knowledge-base-section{display:none}#knowledge-base-section.active{display:block}#conversation-records-section{display:none}#conversation-records-section.active{display:block}#human-support-management-section{display:none}#human-support-management-section.active{display:block}#auto-update-management-section{display:none}#auto-update-management-section.active{display:block}#system-status-section{display:none}#system-status-section.active{display:block}#staff-management-section{display:none}#staff-management-section.active{display:block}.section-header{margin-bottom:var(--spacing-lg)}.section-header h2{font-size:24px;font-weight:700;color:var(--text-primary);margin:0 0 var(--spacing-xs) 0}.section-header p{font-size:14px;color:var(--text-secondary);margin:0}.monitoring-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:var(--spacing-md);margin-bottom:var(--spacing-lg)}.monitor-card{background:var(--bg-primary);border-radius:var(--radius-md);padding:var(--spacing-md);box-shadow:var(--shadow-sm);border:1px solid var(--border);display:flex;align-items:center;gap:var(--spacing-sm);transition:all .3s ease;position:relative;overflow:hidden}.monitor-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#667eea,#764ba2,#f093fb,#f5576c);opacity:0;transition:opacity .3s ease}.monitor-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}.monitor-card:hover:before{opacity:1}.monitor-card .card-icon{width:52px;height:52px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0;box-shadow:0 4px 12px #00000026;transition:transform .3s 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spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.alert{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm);border-radius:var(--radius-md);font-size:.9rem;margin-bottom:var(--spacing-md);animation:slideDown .3s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.alert.hidden{display:none}.alert-icon{font-size:1.1rem}.alert-text{flex:1}.login-footer{text-align:center;margin-top:var(--spacing-xl);padding-top:var(--spacing-md);border-top:1px solid rgba(0,0,0,.1)}.footer-text{color:var(--text-secondary);font-size:.8rem;margin:0 0 var(--spacing-xs) 0}.footer-links{display:flex;justify-content:center;align-items:center;gap:var(--spacing-xs)}.footer-link{color:var(--text-secondary);text-decoration:none;font-size:.8rem;transition:color .2s ease}.footer-link:hover{color:var(--primary)}.footer-divider{color:var(--text-secondary);font-size:.8rem}.input-hint{font-size:.75rem;color:var(--text-muted);margin-top:var(--spacing-xs);line-height:1.4}.form-footer{text-align:center;margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--border-light)}.form-footer p{font-size:.9rem;color:var(--text-secondary);margin:0;line-height:1.5}.login-link,.register-link{color:var(--primary);text-decoration:none;font-weight:600;transition:all .3s ease;padding:.25rem .5rem;border-radius:4px;display:inline-block;position:relative}.login-link:hover,.register-link:hover{color:var(--primary-dark);background-color:rgba(var(--primary-rgb),.1);transform:translateY(-1px)}.terms-link,.privacy-link{color:var(--primary);text-decoration:none;font-weight:500}.terms-link:hover,.privacy-link:hover{text-decoration:underline}.login-card{max-width:480px}select.form-input{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");background-position:right .75rem center;background-repeat:no-repeat;background-size:1.5em 1.5em;padding-right:2.5rem;appearance:none;cursor:pointer}select.form-input:focus{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%233b82f6' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e")}.form-input.valid{border-color:var(--success);background-color:#22c55e0d}.form-input.invalid{border-color:var(--danger);background-color:#ef44440d}.form-input.valid+.input-focus-border{background:var(--success)}.form-input.invalid+.input-focus-border{background:var(--danger)}@media (max-width: 768px){.login-container{padding:var(--spacing-sm)}.login-card{padding:var(--spacing-lg);max-width:100%;margin:var(--spacing-sm)}.brand-title{font-size:1.5rem}.login-subtitle{font-size:.9rem}.form-input{font-size:16px}.bg-shape{display:none}.input-hint{font-size:.7rem}}@media (max-width: 480px){.login-container{padding:var(--spacing-sm)}.login-card{padding:var(--spacing-md)}.brand-title{font-size:1.3rem}.form-options{flex-direction:column;gap:var(--spacing-sm);align-items:flex-start}}.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#ffffffe6;display:flex;align-items:center;justify-content:center;z-index:9999;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.loading-overlay.hidden{display:none}.loading-spinner{width:40px;height:40px;border:4px solid rgba(74,155,142,.2);border-top:4px solid var(--primary);border-radius:50%;animation:spin 1s linear infinite}