*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #4F6EF7;--primary-light: #EEF1FE;--primary-dark: #3A54D4;--success: #10B981;--warning: #F59E0B;--danger: #EF4444;--bg: #F5F7FA;--card-bg: #FFFFFF;--text: #1E293B;--text-secondary: #64748B;--text-light: #94A3B8;--border: #E2E8F0;--shadow: 0 1px 3px rgba(0,0,0,.08);--shadow-md: 0 4px 12px rgba(0,0,0,.1);--radius: 12px;--radius-sm: 8px;--transition: all .2s ease}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}button{cursor:pointer;border:none;outline:none;font-family:inherit}.app-layout{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--card-bg);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100}.sidebar-logo{padding:24px 20px;font-size:18px;font-weight:700;color:var(--primary);display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border);text-decoration:none;cursor:pointer;transition:opacity .2s}.sidebar-logo:hover{opacity:.8}.sidebar-logo .icon{width:36px;height:36px;background:var(--primary);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px}.sidebar-nav{flex:1;padding:16px 12px;display:flex;flex-direction:column;gap:4px}.nav-item{display:flex;align-items:center;gap:12px;padding:10px 16px;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:14px;font-weight:500;transition:var(--transition);text-decoration:none}.nav-item:hover{background:var(--bg);color:var(--text)}.nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}.nav-item .nav-icon{font-size:20px;width:24px;text-align:center}.nav-divider{height:1px;background:var(--border);margin:8px 0}.main-content{flex:1;margin-left:240px;min-height:100vh}.page-header{background:var(--card-bg);border-bottom:1px solid var(--border);padding:16px 32px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50}.page-header h1{font-size:20px;font-weight:600}.page-header .user-menu{display:flex;align-items:center;gap:16px}.avatar{width:36px;height:36px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px}.logout-btn{padding:4px 12px;border:1px solid var(--border-color, #e5e7eb);border-radius:6px;background:transparent;color:var(--text-secondary, #6b7280);font-size:12px;cursor:pointer;transition:all .2s}.logout-btn:hover{background:#fee2e2;color:#dc2626;border-color:#fecaca}.page-body{padding:24px 32px;max-width:1200px}.card{background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);padding:24px;box-shadow:var(--shadow)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.card-title{font-size:16px;font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 20px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;transition:var(--transition);white-space:nowrap}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px #4f6ef74d}.btn-outline{background:#fff;color:var(--primary);border:1.5px solid var(--primary)}.btn-outline:hover{background:var(--primary-light)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--bg);color:var(--text)}.btn-lg{padding:12px 28px;font-size:16px;border-radius:var(--radius)}.btn-sm{padding:5px 12px;font-size:13px}.btn-danger{background:var(--danger);color:#fff}.input-group{display:flex;flex-direction:column;gap:6px}.input-label{font-size:13px;font-weight:600;color:var(--text)}.input-hint{font-size:12px;color:var(--text-light)}input[type=text],input[type=email],input[type=password],input[type=number],textarea,select{padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:14px;font-family:inherit;color:var(--text);background:#fff;transition:var(--transition);outline:none;width:100%}input:focus,textarea:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4f6ef71a}textarea{resize:vertical;min-height:80px}.tag{display:inline-flex;align-items:center;gap:4px;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:500}.tag-blue{background:#eff6ff;color:#3b82f6}.tag-green{background:#ecfdf5;color:#10b981}.tag-orange{background:#fff7ed;color:#f97316}.tag-purple{background:#f5f3ff;color:#8b5cf6}.tag-red{background:#fef2f2;color:#ef4444}.tag-clickable{cursor:pointer;transition:var(--transition)}.tag-clickable:hover{transform:scale(1.05)}.tag-clickable.selected{background:var(--primary);color:#fff}.table-wrapper{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border);font-size:14px}th{background:var(--bg);font-weight:600;color:var(--text-secondary);font-size:12px;text-transform:uppercase;letter-spacing:.5px}tr:hover td{background:#fafbfc}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);padding:20px}.stat-card .stat-label{font-size:13px;color:var(--text-secondary);margin-bottom:4px}.stat-card .stat-value{font-size:28px;font-weight:700;color:var(--text)}.stat-card .stat-change{font-size:12px;margin-top:4px}.stat-change.up{color:var(--success)}.stat-change.down{color:var(--danger)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}.tool-card{background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);padding:28px;cursor:pointer;transition:var(--transition);text-decoration:none;color:inherit}.tool-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--primary)}.tool-card .tool-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}.tool-card .tool-icon.blue{background:#eff6ff}.tool-card .tool-icon.green{background:#ecfdf5}.tool-card .tool-icon.orange{background:#fff7ed}.tool-card .tool-icon.purple{background:#f5f3ff}.tool-card h3{font-size:16px;font-weight:600;margin-bottom:6px}.tool-card p{font-size:13px;color:var(--text-secondary);line-height:1.5}.mode-selector{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:24px}.mode-card{background:var(--card-bg);border:2px solid var(--border);border-radius:var(--radius);padding:32px 24px;text-align:center;cursor:pointer;transition:var(--transition)}.mode-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md)}.mode-card.selected{border-color:var(--primary);background:var(--primary-light)}.mode-card .mode-icon{font-size:40px;margin-bottom:12px}.mode-card h3{font-size:18px;font-weight:600;margin-bottom:8px}.mode-card p{font-size:13px;color:var(--text-secondary)}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:40px;text-align:center;cursor:pointer;transition:var(--transition);background:#fafbfc}.upload-zone:hover{border-color:var(--primary);background:var(--primary-light)}.upload-zone .upload-icon{font-size:40px;margin-bottom:12px}.upload-zone p{font-size:14px;color:var(--text-secondary)}.upload-zone .upload-hint{font-size:12px;color:var(--text-light);margin-top:8px}.result-panel{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-top:24px}.result-panel .result-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}.result-actions{display:flex;gap:8px}.result-content{background:var(--bg);border-radius:var(--radius-sm);padding:20px;white-space:pre-wrap;font-size:14px;line-height:1.8;max-height:500px;overflow-y:auto}.adjust-bar{display:flex;gap:12px;margin-top:16px;align-items:flex-end}.adjust-bar input{flex:1}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2)}.auth-card{background:#fff;border-radius:16px;padding:48px 40px;width:420px;max-width:90vw;box-shadow:0 20px 60px #00000026}.auth-card .auth-logo{text-align:center;margin-bottom:32px}.auth-card .auth-logo h1{font-size:24px;font-weight:700;color:var(--primary)}.auth-card .auth-logo p{font-size:14px;color:var(--text-secondary);margin-top:4px}.auth-card .form-group{margin-bottom:20px}.auth-card .btn{width:100%;padding:12px;font-size:15px}.auth-footer{text-align:center;margin-top:24px;font-size:14px;color:var(--text-secondary)}.filter-bar{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap;align-items:center}.filter-bar select,.filter-bar input{width:auto;min-width:160px}@media (max-width: 768px){.sidebar{width:60px}.sidebar-logo span,.nav-item span{display:none}.nav-item{justify-content:center;padding:12px}.main-content{margin-left:60px}.page-body{padding:16px}.mode-selector,.tools-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:1fr 1fr}.page-header{padding:12px 16px}.page-header h1{font-size:16px}}@media (max-width: 480px){.sidebar{display:none}.main-content{margin-left:0}.stats-grid{grid-template-columns:1fr}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease}@keyframes spin{to{transform:rotate(360deg)}}.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .6s linear infinite}.steps{display:flex;gap:0;margin-bottom:32px}.step{flex:1;display:flex;align-items:center;gap:8px;padding:12px 16px;border-radius:var(--radius-sm);background:var(--bg);font-size:14px;color:var(--text-light);position:relative}.step.active{background:var(--primary-light);color:var(--primary);font-weight:600}.step.done{background:#ecfdf5;color:var(--success)}.step .step-num{width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;background:#fff}.step.active .step-num{background:var(--primary);color:#fff}.step.done .step-num{background:var(--success);color:#fff}.chart-placeholder{background:var(--bg);border-radius:var(--radius-sm);height:300px;display:flex;align-items:center;justify-content:center;color:var(--text-light);font-size:14px;border:2px dashed var(--border)}.toast{position:fixed;top:20px;right:20px;padding:12px 24px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;z-index:1000;animation:fadeIn .3s ease;box-shadow:var(--shadow-md)}.toast.success{background:var(--success);color:#fff}.toast.error{background:var(--danger);color:#fff}.toast.info{background:var(--primary);color:#fff}