:root {
            --color-primary: #2563EB;
            --color-primary-dark: #1D4ED8;
            --color-primary-darker: #1E40AF;
            --color-success: #10B981;
            --color-success-dark: #059669;
            --color-warning: #F59E0B;
            --color-danger: #EF4444;
            --color-muted: #9CA3AF;
            --color-muted-fg: #6B7280;
            --color-muted-border: #E5E7EB;
            --color-front: #3B82F6;
            --color-front-light: #60A5FA;
            --color-front-dark: #2563EB;
            --color-back: #EF4444;
            --color-back-light: #F87171;
            --color-back-dark: #DC2626;
            --color-bg: #F8FAFC;
            --color-surface: #FFFFFF;
            --color-text: #1E293B;
            --color-text-secondary: #64748B;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --radius-sm: 0.375rem;
            --radius-md: 0.5rem;
            --radius-lg: 0.75rem;
            --radius-full: 9999px;
            --spacing-xs: 0.25rem;
            --spacing-sm: 0.5rem;
            --spacing-md: 1rem;
            --spacing-lg: 1.5rem;
            --spacing-xl: 2rem;
            --spacing-2xl: 3rem;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition-fast: 150ms ease;
            --transition-normal: 250ms ease;
            --transition-slow: 400ms ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-sans);
            background: var(--color-bg);
            min-height: 100vh;
            color: var(--color-text);
            -webkit-font-smoothing: antialiased;
        }

        .nav {
            background: var(--color-surface);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md) var(--spacing-lg);
        }

        .nav-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text);
            text-decoration: none;
        }

        .nav-tabs {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: nowrap;
            white-space: nowrap;
        }

        .nav-tab {
            padding: var(--spacing-sm) var(--spacing-md);
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            cursor: pointer;
            border: none;
            background: none;
            white-space: nowrap;
        }

        .nav-tab:hover {
            background: var(--color-bg);
            color: var(--color-text);
        }

        .nav-tab.active {
            background: var(--color-primary);
            color: white;
        }

        .main {
            max-width: 1200px;
            margin: 0 auto;
            padding: var(--spacing-xl) var(--spacing-lg);
        }

        .page {
            display: none;
        }

        .page.active {
            display: block;
        }

        .card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: var(--spacing-xl);
            margin-bottom: var(--spacing-lg);
        }

        .card-title {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: var(--spacing-lg);
            padding-bottom: var(--spacing-md);
            border-bottom: 1px solid var(--color-muted-border);
        }

        /* Lottery Page Styles */
        .lottery-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }

        .header h1 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.025em;
        }

        .header p {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            margin-top: var(--spacing-xs);
        }

        .analysis-section {
            background: #F1F5F9;
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-lg);
        }

        .analysis-title {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: var(--spacing-sm);
        }

        .analysis-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-sm);
        }

        .analysis-item {
            display: flex;
            justify-content: space-between;
            padding: var(--spacing-xs) 0;
            border-bottom: 1px solid var(--color-muted-border);
        }

        .analysis-item:last-child {
            border-bottom: none;
        }

        .analysis-label {
            font-size: 0.75rem;
            color: var(--color-text-secondary);
        }

        .analysis-value {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-text);
        }

        .section {
            margin-bottom: var(--spacing-xl);
            text-align: center;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-md);
        }

        .section-label .dot {
            width: 8px;
            height: 8px;
            border-radius: var(--radius-full);
        }

        .section-label .dot.blue {
            background: var(--color-front);
        }

        .section-label .dot.red {
            background: var(--color-back);
        }

        .numbers-container {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .number {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 700;
            color: white;
            box-shadow: var(--shadow-md);
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            position: relative;
            overflow: hidden;
        }

        .number::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(180deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0) 100%);
            border-radius: var(--radius-full) var(--radius-full) 0 0;
        }

        .number.blue {
            background: linear-gradient(135deg, var(--color-front-light) 0%, var(--color-front-dark) 100%);
        }

        .number.red {
            background: linear-gradient(135deg, var(--color-back-light) 0%, var(--color-back-dark) 100%);
        }

        .number.placeholder {
            background: var(--color-muted);
        }

        .button-container {
            display: flex;
            gap: var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        button {
            flex: 1;
            padding: var(--spacing-md) var(--spacing-lg);
            font-size: 1rem;
            font-weight: 600;
            font-family: inherit;
            border: none;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all var(--transition-fast);
            position: relative;
            overflow: hidden;
            white-space: nowrap;
            min-width: fit-content;
        }

        button::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
        }

        button:active {
            transform: scale(0.98);
        }

        button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            transform: none;
        }

        #draw-btn {
            background: linear-gradient(135deg, var(--color-success) 0%, var(--color-success-dark) 100%);
            color: white;
            box-shadow: var(--shadow-sm), 0 4px 12px rgba(16, 185, 129, 0.3);
        }

        #draw-btn:hover:not(:disabled) {
            background: linear-gradient(135deg, var(--color-success-dark) 0%, #047857 100%);
            box-shadow: var(--shadow-md), 0 6px 16px rgba(16, 185, 129, 0.4);
            transform: translateY(-2px);
        }

        #reset-btn {
            background: var(--color-muted);
            color: white;
            box-shadow: var(--shadow-sm);
        }

        #reset-btn:hover:not(:disabled) {
            background: var(--color-muted-fg);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .number.animate {
            animation: bounceIn 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
        }

        @keyframes bounceIn {
            0% { transform: scale(0); opacity: 0; }
            50% { transform: scale(1.15); }
            70% { transform: scale(0.95); }
            100% { transform: scale(1); opacity: 1; }
        }

        @keyframes shimmer {
            0% { background-position: -200% 0; }
            100% { background-position: 200% 0; }
        }

        .number.shimmer {
            background: linear-gradient(90deg, var(--color-front) 25%, var(--color-front-light) 50%, var(--color-front) 75%);
            background-size: 200% 100%;
            animation: shimmer 1s infinite;
        }

        .number.shimmer.red {
            background: linear-gradient(90deg, var(--color-back) 25%, var(--color-back-light) 50%, var(--color-back) 75%);
            background-size: 200% 100%;
        }

        /* Distribution Page Styles */
        .distribution-header {
            margin-bottom: var(--spacing-lg);
        }

        .distribution-controls {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: var(--spacing-lg);
            padding: var(--spacing-md);
            background: var(--color-bg);
            border-radius: var(--radius-md);
            flex-wrap: wrap;
            gap: var(--spacing-md);
        }

        .distribution-filter {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .filter-type-switch {
            display: flex;
            background: var(--color-border);
            border-radius: var(--radius-sm);
            overflow: hidden;
        }

        .filter-type-btn {
            padding: var(--spacing-xs) var(--spacing-md);
            border: none;
            background: transparent;
            color: var(--color-text-secondary);
            font-size: 0.875rem;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .filter-type-btn:hover {
            background: rgba(0, 0, 0, 0.05);
        }

        .filter-type-btn.active {
            background: var(--color-primary);
            color: white;
        }

        .filter-options {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }

        .distribution-legend {
            display: flex;
            gap: var(--spacing-lg);
        }

        .legend-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            font-size: 0.875rem;
            color: var(--color-text-secondary);
        }

        .legend-dot {
            width: 12px;
            height: 12px;
            border-radius: 2px;
        }

        .legend-dot.front {
            background: var(--color-primary);
        }

        .legend-dot.back {
            background: var(--color-danger);
        }

        .distribution-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
        }

        .distribution-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.75rem;
        }

        .distribution-table th,
        .distribution-table td {
            border: 1px solid var(--color-border);
            padding: 4px 2px;
            text-align: center;
            min-width: 20px;
        }

        .distribution-table th {
            background: var(--color-bg);
            font-weight: 600;
            color: var(--color-text);
            position: sticky;
            top: 0;
            z-index: 10;
        }

        .distribution-table .term-col {
            min-width: 80px;
            background: var(--color-bg);
            font-weight: 500;
            position: sticky;
            left: 0;
            z-index: 5;
        }

        .distribution-table .front-header {
            background: rgba(59, 130, 246, 0.1);
            color: var(--color-primary);
        }

        .distribution-table .back-header {
            background: rgba(239, 68, 68, 0.1);
            color: var(--color-danger);
        }

        .distribution-table .number-row th {
            font-size: 0.6875rem;
            padding: 2px;
            background: var(--color-bg);
        }

        .distribution-table tbody tr:hover {
            background: var(--color-bg);
        }

        .distribution-table tbody tr:nth-child(even) {
            background: rgba(0, 0, 0, 0.02);
        }

        .distribution-table tbody tr:nth-child(even):hover {
            background: var(--color-bg);
        }

        .distribution-table .cell-front {
            background: var(--color-primary);
            color: white;
            font-weight: 600;
        }

        .distribution-table .cell-back {
            background: var(--color-danger);
            color: white;
            font-weight: 600;
        }

        /* History Page Styles */
        .table-container {
            overflow-x: auto;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.875rem;
        }

        th, td {
            padding: var(--spacing-sm) var(--spacing-md);
            text-align: left;
            border-bottom: 1px solid var(--color-muted-border);
        }

        th {
            background: var(--color-bg);
            font-weight: 600;
            color: var(--color-text);
            position: sticky;
            top: 0;
        }

        tr:hover {
            background: #F8FAFC;
        }

        .front-nums {
            color: var(--color-front);
            font-weight: 600;
        }

        .back-nums {
            color: var(--color-back);
            font-weight: 600;
        }

        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .pagination button {
            flex: none;
            padding: var(--spacing-sm) var(--spacing-md);
            min-width: 80px;
        }

        .pagination .page-info {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
        }

        .search-box {
            display: flex;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-lg);
        }

        .search-box input {
            flex: 1;
            padding: var(--spacing-sm) var(--spacing-md);
            border: 1px solid var(--color-muted-border);
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            font-family: inherit;
        }

        .search-box input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        /* Analysis Page Styles */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-xl);
        }

        .stat-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            text-align: center;
        }

        .stat-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
        }

        .stat-label {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            margin-top: var(--spacing-xs);
        }

        .chart-container {
            position: relative;
            height: 300px;
            margin-bottom: var(--spacing-xl);
        }

        .repeat-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .repeat-control {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-lg);
            padding: var(--spacing-md);
            background: var(--color-bg);
            border-radius: var(--radius-md);
        }

        .repeat-label {
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--color-text);
        }

        .repeat-input {
            width: 80px;
            padding: var(--spacing-sm) var(--spacing-md);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 1rem;
            text-align: center;
        }

        .repeat-input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
        }

        .repeat-hint {
            font-size: 0.75rem;
            color: var(--color-text-secondary);
        }

        .repeat-btn {
            padding: var(--spacing-sm) var(--spacing-lg);
            background: var(--color-primary);
            color: white;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 0.875rem;
            cursor: pointer;
            transition: background 0.2s;
        }

        .repeat-btn:hover {
            background: #2563EB;
        }

        .repeat-detail {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
        }

        .repeat-stat-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            text-align: center;
        }

        .repeat-stat-title {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-sm);
        }

        .repeat-stat-value {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
        }

        .repeat-stat-numbers {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--spacing-xs);
        }

        .repeat-stat-numbers .num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            background: var(--color-primary);
            color: white;
            border-radius: 50%;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .repeat-stat-desc {
            font-size: 0.75rem;
            color: var(--color-text-secondary);
        }

        .parity-sections {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-xl);
        }

        .parity-section {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
        }

        .parity-section-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: var(--spacing-md);
            padding-bottom: var(--spacing-sm);
            border-bottom: 1px solid var(--color-border);
        }

        .parity-stats {
            display: flex;
            justify-content: space-around;
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--color-border);
        }

        .parity-stat {
            text-align: center;
        }

        .parity-label {
            display: block;
            font-size: 0.75rem;
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-xs);
        }

        .parity-value {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
        }

        .model-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-lg);
        }

        .model-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
        }

        .model-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: var(--spacing-md);
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .model-card h3 .badge {
            background: var(--color-primary);
            color: white;
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: var(--radius-full);
        }

        .model-card p {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        .model-card .highlight {
            color: var(--color-text);
            font-weight: 600;
        }

        .analysis-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-lg);
        }

        .time-range-selector {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .time-range-selector label {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
        }

        .time-range-selector select {
            padding: var(--spacing-sm) var(--spacing-md);
            border: 1px solid var(--color-muted-border);
            border-radius: var(--radius-md);
            background: var(--color-surface);
            font-size: 0.875rem;
            cursor: pointer;
        }

        .filter-panel {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            align-items: flex-end;
        }

        .filter-panel .filter-type-switch {
            flex-shrink: 0;
        }

        .filter-panel .filter-options {
            flex-shrink: 0;
        }

        .filter-panel .filter-group {
            flex-shrink: 0;
        }

        .filter-panel .custom-term-group,
        .filter-panel .custom-date-group {
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .filter-panel .apply-filter-btn {
            margin-left: auto;
        }

        .custom-term-group,
        .custom-date-group {
            display: none;
        }

        .filter-row {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            align-items: flex-end;
        }

        .filter-group {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .filter-label {
            font-size: 0.75rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .filter-select {
            padding: var(--spacing-sm) var(--spacing-md);
            border: 1px solid var(--color-muted-border);
            border-radius: var(--radius-md);
            background: var(--color-surface);
            font-size: 0.875rem;
            cursor: pointer;
            min-width: 120px;
            transition: all var(--transition-fast);
        }

        .filter-select:hover {
            border-color: var(--color-primary);
        }

        .filter-select:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        .filter-input {
            padding: var(--spacing-sm) var(--spacing-md);
            border: 1px solid var(--color-muted-border);
            border-radius: var(--radius-md);
            background: var(--color-surface);
            font-size: 0.875rem;
            transition: all var(--transition-fast);
        }

        .filter-input:hover {
            border-color: var(--color-primary);
        }

        .filter-input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        .date-range-inputs,
        .term-range-inputs {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .term-range-selects {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .term-range-selects .filter-select {
            min-width: 100px;
        }

        .date-separator {
            color: var(--color-text-secondary);
            font-size: 0.875rem;
        }

        .apply-filter-btn {
            padding: var(--spacing-sm) var(--spacing-lg);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            color: white;
            border: none;
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .apply-filter-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .filter-summary {
            margin-bottom: var(--spacing-lg);
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--color-bg);
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            color: var(--color-text-secondary);
        }

        .summary-text {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
        }

        .summary-text strong {
            color: var(--color-primary);
            font-weight: 600;
        }

        .chart-controls {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .chart-type-selector {
            display: flex;
            gap: var(--spacing-xs);
        }

        .chart-type-btn {
            padding: var(--spacing-xs) var(--spacing-md);
            background: var(--color-surface);
            border: 1px solid var(--color-muted-border);
            border-radius: var(--radius-md);
            font-size: 0.75rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .chart-type-btn:hover {
            border-color: var(--color-primary);
        }

        .chart-type-btn.active {
            background: var(--color-primary);
            color: white;
            border-color: var(--color-primary);
        }

        .freq-bar-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            padding: var(--spacing-xs) 0;
            transition: all var(--transition-fast);
        }

        .freq-bar-item:hover {
            background: rgba(37, 99, 235, 0.05);
            border-radius: var(--radius-sm);
        }

        .freq-bar-label {
            width: 40px;
            font-size: 0.875rem;
            font-weight: 600;
            text-align: right;
            color: var(--color-text);
        }

        .freq-bar-track {
            flex: 1;
            height: 24px;
            background: var(--color-bg);
            border-radius: var(--radius-sm);
            overflow: hidden;
            position: relative;
            cursor: pointer;
        }

        .freq-bar-fill {
            height: 100%;
            border-radius: var(--radius-sm);
            transition: width 0.5s ease;
            position: relative;
        }

        .freq-bar-fill.front {
            background: linear-gradient(90deg, var(--color-front-light), var(--color-front));
        }

        .freq-bar-fill.back {
            background: linear-gradient(90deg, var(--color-back-light), var(--color-back));
        }

        .freq-bar-fill::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(180deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0) 100%);
        }

        .freq-bar-value {
            width: 120px;
            font-size: 0.75rem;
            color: var(--color-text-secondary);
            display: flex;
            flex-direction: column;
        }

        .freq-bar-count {
            font-weight: 600;
            color: var(--color-text);
        }

        .freq-bar-percent {
            font-size: 0.7rem;
        }

        .freq-bars-container {
            max-height: 600px;
            overflow-y: auto;
            padding-right: var(--spacing-sm);
        }

        .freq-bars-container::-webkit-scrollbar {
            width: 6px;
        }

        .freq-bars-container::-webkit-scrollbar-track {
            background: var(--color-bg);
            border-radius: 3px;
        }

        .freq-bars-container::-webkit-scrollbar-thumb {
            background: var(--color-muted);
            border-radius: 3px;
        }

        .freq-bars-container::-webkit-scrollbar-thumb:hover {
            background: var(--color-muted-fg);
        }

        .number-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 700;
            color: white;
        }

        .number-badge.front {
            background: linear-gradient(135deg, var(--color-front-light) 0%, var(--color-front-dark) 100%);
        }

        .number-badge.back {
            background: linear-gradient(135deg, var(--color-back-light) 0%, var(--color-back-dark) 100%);
        }

        .top-numbers-display {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-md);
        }

        .top-number-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            padding: var(--spacing-xs) var(--spacing-sm);
            background: var(--color-bg);
            border-radius: var(--radius-md);
            font-size: 0.75rem;
        }

        .top-number-rank {
            width: 18px;
            height: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: white;
            border-radius: var(--radius-full);
            font-size: 0.65rem;
            font-weight: 700;
        }

        .top-number-rank.gold {
            background: linear-gradient(135deg, #FFD700, #FFA500);
        }

        .top-number-rank.silver {
            background: linear-gradient(135deg, #C0C0C0, #A0A0A0);
        }

        .top-number-rank.bronze {
            background: linear-gradient(135deg, #CD7F32, #8B4513);
        }

        .chart-desc {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-md);
        }

        .frequency-bars {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .freq-bar-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
        }

        .freq-bar-label {
            width: 50px;
            font-size: 0.875rem;
            font-weight: 500;
            text-align: right;
        }

        .freq-bar-track {
            flex: 1;
            height: 20px;
            background: var(--color-bg);
            border-radius: var(--radius-sm);
            overflow: hidden;
            position: relative;
        }

        .freq-bar-fill {
            height: 100%;
            border-radius: var(--radius-sm);
            transition: width 0.3s ease;
        }

        .freq-bar-fill.front {
            background: linear-gradient(90deg, var(--color-front-light), var(--color-front));
        }

        .freq-bar-fill.back {
            background: linear-gradient(90deg, var(--color-back-light), var(--color-back));
        }

        .freq-bar-value {
            width: 100px;
            font-size: 0.75rem;
            color: var(--color-text-secondary);
        }

        .predict-section {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .model-selector {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: var(--spacing-sm);
        }

        .model-option {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--color-surface);
            border: 1px solid var(--color-muted-border);
            border-radius: var(--radius-md);
            cursor: pointer;
            font-size: 0.875rem;
            transition: all var(--transition-fast);
        }

        .model-option:hover {
            border-color: var(--color-primary);
            background: #EEF2FF;
        }

        .model-option input[type="radio"],
        .model-option input[type="checkbox"] {
            accent-color: var(--color-primary);
        }

        .model-option.model-checkbox:has(input:checked) {
            border-color: var(--color-primary);
            background: #EEF2FF;
        }

        .model-weights {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
        }

        .weight-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            padding: var(--spacing-xs) 0;
        }

        .weight-row label {
            width: 80px;
            font-size: 0.8125rem;
            color: var(--color-text-secondary);
        }

        .weight-row input[type="range"] {
            flex: 1;
            height: 6px;
            -webkit-appearance: none;
            appearance: none;
            background: var(--color-muted-border);
            border-radius: 3px;
            cursor: pointer;
        }

        .weight-row input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--color-primary);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .weight-row input[type="range"]::-webkit-slider-thumb:hover {
            transform: scale(1.2);
        }

        .weight-row span {
            width: 45px;
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--color-primary);
            text-align: right;
        }

        .predict-confidence {
            padding: var(--spacing-sm);
            background: var(--color-bg);
            border-radius: var(--radius-md);
        }

        .predict-result {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .predict-info {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            margin-top: var(--spacing-lg);
        }

        .info-section {
            margin-bottom: var(--spacing-lg);
        }

        .info-section:last-child {
            margin-bottom: 0;
        }

        .info-title {
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: var(--spacing-sm);
            padding-bottom: var(--spacing-xs);
            border-bottom: 1px solid var(--color-border);
        }

        .info-list {
            color: var(--color-text-secondary);
            font-size: 0.8125rem;
            line-height: 1.8;
            padding-left: var(--spacing-lg);
            margin: 0;
        }

        .info-list li {
            margin-bottom: var(--spacing-xs);
        }

        .info-list li:last-child {
            margin-bottom: 0;
        }

        .info-list strong {
            color: var(--color-text);
        }

        .history-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .data-status {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 0.875rem;
            color: var(--color-text-secondary);
        }

        .status-indicator {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-warning);
        }

        .status-indicator.online {
            background: var(--color-success);
        }

        .status-indicator.offline {
            background: var(--color-danger);
        }

        .update-section {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
        }

        .update-btn {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--color-primary);
            color: white;
            border: none;
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .update-btn:hover {
            background: var(--color-primary-dark);
        }

        .update-btn:disabled {
            background: var(--color-muted);
            cursor: not-allowed;
        }

        .update-btn.loading {
            pointer-events: none;
        }

        .update-btn.loading span:first-child {
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .last-update {
            font-size: 0.75rem;
            color: var(--color-text-secondary);
        }

        .clear-btn {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--color-surface);
            color: var(--color-danger);
            border: 1px solid var(--color-danger);
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .clear-btn:hover {
            background: var(--color-danger);
            color: white;
        }

        .footer {
            text-align: center;
            padding: var(--spacing-lg);
            font-size: 0.75rem;
            color: var(--color-text-secondary);
            border-top: 1px solid var(--color-muted-border);
            background: var(--color-surface);
        }

        @media (max-width: 1024px) {
            .main {
                padding: var(--spacing-lg) var(--spacing-md);
            }
            
            .card {
                padding: var(--spacing-lg);
            }

            .filter-row {
                flex-direction: column;
                align-items: stretch;
            }

            .filter-group {
                width: 100%;
            }

            .filter-select,
            .filter-input {
                width: 100%;
            }

            .date-range-inputs,
            .term-range-inputs {
                width: 100%;
            }

            .term-range-selects {
                width: 100%;
                flex-wrap: wrap;
            }

            .term-range-selects .filter-select {
                flex: 1;
                min-width: 80px;
            }

            .date-range-inputs .filter-input,
            .term-range-inputs .filter-input {
                flex: 1;
            }

            .apply-filter-btn {
                width: 100%;
            }

            .repeat-stats {
                grid-template-columns: repeat(2, 1fr);
            }

            .parity-sections {
                grid-template-columns: 1fr;
            }

            .model-cards {
                grid-template-columns: 1fr;
            }

            .chart-controls {
                flex-direction: column;
                align-items: flex-start;
            }

            .chart-type-selector {
                width: 100%;
            }

            .chart-type-btn {
                flex: 1;
                text-align: center;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-xl: 1.5rem;
                --spacing-2xl: 2rem;
            }

            .nav-container {
                flex-direction: column;
                gap: var(--spacing-sm);
                padding: var(--spacing-sm) var(--spacing-md);
            }

            .nav-brand {
                font-size: 1.125rem;
            }

            .nav-tabs {
                width: 100%;
                justify-content: center;
                flex-wrap: nowrap;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                gap: var(--spacing-xs);
                padding-bottom: var(--spacing-xs);
            }

            .nav-tab {
                white-space: nowrap;
                padding: var(--spacing-xs) var(--spacing-sm);
                font-size: 0.8125rem;
            }

            .main {
                padding: var(--spacing-md) var(--spacing-sm);
            }

            .card {
                padding: var(--spacing-md);
                margin-bottom: var(--spacing-md);
                border-radius: var(--radius-md);
            }

            .card-title {
                font-size: 1.125rem;
                margin-bottom: var(--spacing-md);
                padding-bottom: var(--spacing-sm);
            }

            .lottery-content {
                max-width: 100%;
            }

            .distribution-controls {
                flex-direction: column;
                align-items: flex-start;
            }

            .distribution-filter {
                width: 100%;
            }

            .filter-type-switch {
                width: 100%;
            }

            .filter-type-btn {
                flex: 1;
            }

            .filter-options {
                width: 100%;
            }

            .distribution-legend {
                flex-wrap: wrap;
            }

            .distribution-table {
                font-size: 0.625rem;
            }

            .distribution-table th,
            .distribution-table td {
                min-width: 16px;
                padding: 2px 1px;
            }

            .distribution-table .term-col {
                min-width: 60px;
                font-size: 0.625rem;
            }

            .header h1 {
                font-size: 1.5rem;
            }

            .header p {
                font-size: 0.8125rem;
            }

            .number {
                width: 44px;
                height: 44px;
                font-size: 1rem;
            }

            .button-container {
                flex-direction: column;
                gap: var(--spacing-sm);
            }

            .button-container button {
                width: 100%;
            }

            .analysis-grid {
                grid-template-columns: 1fr;
            }

            .analysis-section {
                padding: var(--spacing-sm);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }

            .stat-card {
                padding: var(--spacing-md);
            }

            .stat-value {
                font-size: 1.5rem;
            }

            .stat-label {
                font-size: 0.75rem;
            }

            .search-box {
                flex-direction: column;
                gap: var(--spacing-sm);
            }

            .search-box button {
                width: 100%;
            }

            .pagination {
                flex-wrap: wrap;
                gap: var(--spacing-sm);
            }

            .pagination button {
                min-width: 70px;
                padding: var(--spacing-xs) var(--spacing-sm);
                font-size: 0.875rem;
            }

            .pagination .page-info {
                width: 100%;
                text-align: center;
                order: -1;
            }

            table {
                font-size: 0.8125rem;
            }

            th, td {
                padding: var(--spacing-xs) var(--spacing-sm);
            }

            .freq-bar-item {
                gap: var(--spacing-sm);
            }

            .freq-bar-label {
                width: 32px;
                font-size: 0.8125rem;
            }

            .freq-bar-value {
                width: 90px;
            }

            .freq-bar-count {
                font-size: 0.75rem;
            }

            .freq-bar-percent {
                font-size: 0.625rem;
            }

            .top-numbers-display {
                gap: var(--spacing-xs);
            }

            .top-number-item {
                font-size: 0.6875rem;
                padding: var(--spacing-xs);
            }

            .number-badge {
                width: 24px;
                height: 24px;
                font-size: 0.6875rem;
            }

            .top-number-rank {
                width: 16px;
                height: 16px;
                font-size: 0.6rem;
            }

            .predict-section {
                padding: var(--spacing-md);
            }

            .model-selector {
                grid-template-columns: 1fr;
            }

            .model-weights {
                padding: var(--spacing-sm);
            }

            .weight-row {
                flex-wrap: wrap;
                gap: var(--spacing-sm);
            }

            .weight-row label {
                width: 100%;
            }

            .weight-row input[type="range"] {
                flex: 1;
                min-width: 0;
            }

            .weight-row span {
                width: auto;
                min-width: 45px;
            }

            .predict-result {
                padding: var(--spacing-md);
            }

            .predict-info {
                padding: var(--spacing-md);
            }

            .info-title {
                font-size: 0.875rem;
            }

            .info-list {
                font-size: 0.75rem;
            }

            .update-section {
                flex-direction: column;
                align-items: stretch;
                gap: var(--spacing-sm);
            }

            .update-btn,
            .clear-btn {
                width: 100%;
                justify-content: center;
            }

            .history-header {
                flex-direction: column;
                align-items: flex-start;
            }

            .chart-container {
                height: 250px;
            }

            .filter-panel {
                padding: var(--spacing-md);
                flex-direction: column;
                align-items: stretch;
            }

            .filter-panel .filter-type-switch {
                width: 100%;
            }

            .filter-panel .filter-type-btn {
                flex: 1;
            }

            .filter-panel .filter-options,
            .filter-panel .filter-group,
            .filter-panel .custom-term-group,
            .filter-panel .custom-date-group {
                width: 100%;
            }

            .filter-panel .apply-filter-btn {
                margin-left: 0;
                width: 100%;
            }

            .filter-label {
                font-size: 0.6875rem;
            }

            .filter-select,
            .filter-input {
                font-size: 0.8125rem;
                padding: var(--spacing-xs) var(--spacing-sm);
            }

            .date-separator {
                font-size: 0.8125rem;
            }

            .summary-text {
                font-size: 0.8125rem;
            }

            .freq-bars-container {
                max-height: 400px;
            }
        }

        @media (max-width: 480px) {
            .nav-tabs {
                justify-content: flex-start;
            }

            .nav-tab {
                font-size: 0.75rem;
                padding: var(--spacing-xs) var(--spacing-xs);
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .number {
                width: 40px;
                height: 40px;
                font-size: 0.9375rem;
            }

            .section-label {
                font-size: 0.6875rem;
            }

            .freq-bar-label {
                width: 28px;
                font-size: 0.75rem;
            }

            .freq-bar-value {
                width: 80px;
            }

            .freq-bar-track {
                height: 20px;
            }

            .top-numbers-display {
                flex-wrap: wrap;
            }

            .top-number-item {
                flex: 1;
                min-width: calc(50% - var(--spacing-xs));
            }

            .chart-container {
                height: 220px;
            }
        }

        @media (min-width: 1400px) {
            .main {
                max-width: 1320px;
            }

            .nav-container {
                max-width: 1320px;
            }
        }

        .hot-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 28px;
            height: 28px;
            padding: 0 8px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            color: white;
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            font-weight: 600;
        }

        .data-status {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 0.875rem;
            color: var(--color-text-secondary);
        }

        .status-indicator {
            width: 8px;
            height: 8px;
            border-radius: var(--radius-full);
            background: var(--color-muted);
        }

        .status-indicator.online {
            background: var(--color-success);
        }

        .status-indicator.offline {
            background: var(--color-danger);
        }

        .update-section {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .update-btn, .clear-btn {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            padding: var(--spacing-sm) var(--spacing-md);
            font-size: 0.875rem;
            font-weight: 500;
            border: none;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .update-btn {
            background: var(--color-primary);
            color: white;
        }

        .update-btn:hover {
            background: var(--color-primary-dark);
        }

        .clear-btn {
            background: var(--color-muted);
            color: white;
        }

        .clear-btn:hover {
            background: var(--color-muted-fg);
        }

        .last-update {
            font-size: 0.75rem;
            color: var(--color-text-secondary);
        }