* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', system-ui, sans-serif;
        }
        
        :root {
            --primary-color: #1a365d;
            --secondary-color: #2d74da;
            --accent-color: #4f46e5;
            --light-bg: #f8fafc;
            --border-color: #e2e8f0;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --success-color: #10b981;
            --warning-color: #f59e0b;
            --danger-color: #ef4444;
        }
        
        body {
            background: linear-gradient(135deg, #f6f9fc 0%, #f1f5f9 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            
        }
        
        .container {
            max-width: 1000px;
            margin: 0 auto;
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
            overflow: hidden;
            animation: fadeIn 0.5s ease-out;
			padding: 16px;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .headerr {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 32px 28px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .headerr::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
            background-size: 30px 30px;
            opacity: 0.1;
            animation: float 20s linear infinite;
        }
        
        @keyframes float {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        h1 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 8px;
            position: relative;
        }
        
        .subtitle {
            font-size: 1.1rem;
            opacity: 0.9;
            font-weight: 400;
            max-width: 600px;
            margin: 0 auto;
        }
        
        .calculator-tabs {
            display: flex;
            background: var(--light-bg);
            border-bottom: 1px solid var(--border-color);
        }
        
        .tab {
            flex: 1;
            padding: 20px;
            text-align: center;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s;
            border-bottom: 3px solid transparent;
        }
        
        .tab.active {
            color: var(--accent-color);
            border-bottom-color: var(--accent-color);
            background: white;
        }
        
        .tab:hover:not(.active) {
            background: rgba(79, 70, 229, 0.05);
        }
        
        .tab-content {
            padding: 32px 28px;
        }
        
        .tab-pane {
            display: none;
        }
        
        .tab-pane.active {
            display: block;
            animation: slideIn 0.3s ease-out;
        }
        
        @keyframes slideIn {
            from { opacity: 0; transform: translateX(20px); }
            to { opacity: 1; transform: translateX(0); }
        }
        
        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-bottom: 32px;
        }
        
        .form-group {
            margin-bottom: 0;
        }
        
        label {
            display: block;
            margin-bottom: 10px;
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.95rem;
        }
        
        .input-with-icon {
            position: relative;
        }
        
        .input-with-icon input, 
        .input-with-icon select {
            width: 100%;
            padding: 16px 20px 16px 48px;
            border: 2px solid var(--border-color);
            border-radius: 12px;
            font-size: 1rem;
            background: white;
            transition: all 0.3s;
        }
        
        .input-icon {
            position: absolute;
            left: 18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-secondary);
            pointer-events: none;
        }
        
        .input-with-icon input:focus,
        .input-with-icon select:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
        }
        
        .info-bubble {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            background: var(--accent-color);
            color: white;
            border-radius: 50%;
            font-size: 12px;
            margin-left: 8px;
            cursor: help;
            vertical-align: middle;
        }
        
        .complexity-selector {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-top: 8px;
        }
        
        .complexity-option {
            padding: 16px;
            border: 2px solid var(--border-color);
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.3s;
            text-align: center;
        }
        
        .complexity-option:hover {
            border-color: var(--accent-color);
            background: rgba(79, 70, 229, 0.05);
        }
        
        .complexity-option.selected {
            border-color: var(--accent-color);
            background: rgba(79, 70, 229, 0.1);
            font-weight: 600;
        }
        
        .complexity-label {
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-primary);
        }
        
        .complexity-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.4;
        }
        
        .action-buttons {
            display: flex;
            gap: 16px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        
        .btn {
            padding: 18px 32px;
            border: none;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-width: 180px;
        }
        
        .btn-primary {
            background: var(--accent-color);
            color: white;
            flex: 2;
        }
        
        .btn-primary:hover {
            background: #4338ca;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(79, 70, 229, 0.3);
        }
        
        .btn-secondary {
            background: var(--light-bg);
            color: var(--text-primary);
            flex: 1;
        }
        
        .btn-secondary:hover {
            background: #e2e8f0;
        }
        
        .results-section {
            margin-top: 40px;
            display: none;
        }
        
        .results-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 2px solid var(--border-color);
        }
        
        .results-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        
        .results-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }
        
        .result-card {
            background: var(--light-bg);
            border-radius: 16px;
            padding: 24px;
            border-left: 4px solid var(--accent-color);
        }
        
        .result-card.total {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            border-left-color: var(--accent-color);
        }
        
        .result-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
            font-weight: 500;
        }
        
        .total .result-label {
            color: rgba(255, 255, 255, 0.9);
        }
        
        .result-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        
        .total .result-value {
            color: white;
        }
        
        .result-breakdown {
            margin-top: 32px;
            background: white;
            border-radius: 16px;
            padding: 24px;
            border: 1px solid var(--border-color);
        }
        
        .breakdown-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--primary-color);
        }
        
        .breakdown-item {
            display: flex;
            justify-content: space-between;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-color);
        }
        
        .breakdown-item:last-child {
            border-bottom: none;
            font-weight: 600;
            color: var(--primary-color);
        }
        
        .disclaimer {
            margin-top: 32px;
            padding: 20px;
            background: #fff3cd;
            border-radius: 12px;
            border-left: 4px solid var(--warning-color);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        
        .state-highlight {
            display: inline-block;
            background: rgba(79, 70, 229, 0.1);
            color: var(--accent-color);
            padding: 6px 12px;
            border-radius: 20px;
            font-weight: 600;
            margin-left: 10px;
        }
        
        /* 新增样式 */
        .tax-results-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }
        
        .tax-result-card {
            background: var(--light-bg);
            border-radius: 16px;
            padding: 20px;
            text-align: center;
            border-top: 4px solid var(--accent-color);
        }
        
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 20px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }
        
        .comparison-table th {
            background: var(--primary-color);
            color: white;
            padding: 16px;
            text-align: left;
            font-weight: 600;
        }
        
        .comparison-table td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border-color);
        }
        
        .comparison-table tr:hover {
            background: rgba(79, 70, 229, 0.03);
        }
        
        .comparison-table tr:nth-child(even) {
            background: var(--light-bg);
        }
        
        .chart-container {
            width: 100%;
            height: 300px;
            margin: 30px 0;
        }
        
        .state-badge {
            display: inline-block;
            padding: 4px 10px;
            background: var(--accent-color);
            color: white;
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-right: 5px;
            margin-bottom: 5px;
        }
        
        @media (max-width: 768px) {
            .container {
                border-radius: 16px;
            }
            
            .headerr {
                padding: 24px 20px;
            }
            
            h1 {
                font-size: 1.8rem;
            }
            
            .calculator-tabs {
                flex-direction: column;
            }
            
            .tab {
                padding: 16px;
            }
            
            .tab-content {
                padding: 24px 20px;
            }
            
            .form-grid {
                grid-template-columns: 1fr;
            }
            
            .complexity-selector {
                grid-template-columns: 1fr;
            }
            
            .action-buttons {
                flex-direction: column;
            }
            
            .btn {
                min-width: 100%;
            }
            
            .results-grid {
                grid-template-columns: 1fr;
            }
            
            .comparison-table {
                font-size: 0.9rem;
            }
            
            .comparison-table th,
            .comparison-table td {
                padding: 10px;
            }
        }
        
        .export-buttons {
            display: flex;
            gap: 12px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        
        .export-btn {
            padding: 12px 20px;
            background: white;
            border: 2px solid var(--border-color);
            border-radius: 10px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .export-btn:hover {
            border-color: var(--accent-color);
            background: rgba(79, 70, 229, 0.05);
        }
        
        .loading {
            display: none;
            text-align: center;
            padding: 40px;
        }
        
        .spinner {
            width: 50px;
            height: 50px;
            border: 4px solid var(--border-color);
            border-top: 4px solid var(--accent-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto 20px;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .tooltip {
            position: relative;
            display: inline-block;
            cursor: help;
        }
        
        .tooltip .tooltiptext {
            visibility: hidden;
            width: 300px;
            background-color: var(--text-primary);
            color: white;
            text-align: left;
            border-radius: 8px;
            padding: 12px;
            position: absolute;
            z-index: 1;
            bottom: 125%;
            left: 50%;
            transform: translateX(-50%);
            font-size: 0.9rem;
            font-weight: normal;
            opacity: 0;
            transition: opacity 0.3s;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        
        .tooltip:hover .tooltiptext {
            visibility: visible;
            opacity: 1;
        }