:root {
            --primary-color: #2c7da0;
            --secondary-color: #a9d6e5;
            --accent-color: #01497c;
            --size-color: #20c997;
            --resolution-color: #6f42c1;
            --light-gray: #f8f9fa;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #6c757d;
            --success-color: #28a745;
            --warning-color: #ffc107;
        }
        .page-header {
            background: linear-gradient(135deg, rgba(32, 201, 151, 0.4) 0%, rgba(44, 125, 160, 0.4) 100%);
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid rgba(44, 125, 160, 0.2);
            position: relative;
            overflow: hidden;color: var(--text-color);
        }
        .breadcrumb {
            background-color: transparent;
            padding: 0.5rem 0;
            margin-bottom: 0.5rem;
        }
        .breadcrumb-item a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .breadcrumb-item.active {
            color: var(--text-color);
        }
        .size-visualization {
            position: relative;
            height: 300px;
            background-color: rgba(32, 201, 151, 0.05);
            border: 2px dashed rgba(32, 201, 151, 0.3);
            border-radius: 12px;
            margin: 2rem 0;
            overflow: hidden;
        }
        .window-outline {
            position: absolute;
            border: 3px solid var(--size-color);
            background-color: rgba(32, 201, 151, 0.1);
            transition: all 0.5s ease;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .size-label {
            position: absolute;
            background-color: var(--size-color);
            color: white;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            z-index: 10;
        }
        .width-label {
            top: -30px;
            left: 50%;
            transform: translateX(-50%);
        }
        .height-label {
            left: -70px;
            top: 50%;
            transform: translateY(-50%);
            writing-mode: vertical-rl;
        }
        .dimension-display {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: rgba(255, 255, 255, 0.9);
            padding: 1.5rem 2.5rem;
            border-radius: 10px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            text-align: center;
            min-width: 200px;
        }
        .dimension-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--size-color);
            font-family: 'Courier New', monospace;
        }
        .dimension-unit {
            font-size: 1rem;
            color: var(--text-muted);
            margin-left: 0.5rem;
        }
        .dimension-label {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-color);
            margin-top: 0.5rem;
        }
        .stats-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: white;
            border-radius: 8px;
            padding: 1.5rem;
            border: 1px solid var(--border-color);
            box-shadow: 0 3px 8px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }
        .stat-card:hover {
            transform: translateY(-5px);
        }
        .stat-header {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
        }
        .stat-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background-color: rgba(32, 201, 151, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            color: var(--size-color);
        }
        .stat-title {
            font-weight: 600;
            color: var(--text-color);
            margin-bottom: 0.25rem;
        }
        .stat-subtitle {
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .stat-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--size-color);
            margin-bottom: 0.5rem;
            font-family: 'Courier New', monospace;
        }
        .resolution-stat .stat-value {
            color: var(--resolution-color);
        }
        .resolution-stat .stat-icon {
            background-color: rgba(111, 66, 193, 0.1);
            color: var(--resolution-color);
        }
        .breakpoint-container {
            background-color: var(--light-gray);
            border-radius: 10px;
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .breakpoint-list {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .breakpoint-item {
            flex: 1;
            min-width: 150px;
            background: white;
            border-radius: 8px;
            padding: 1.25rem;
            text-align: center;
            border: 2px solid transparent;
            transition: all 0.3s;
        }
        .breakpoint-item.active {
            border-color: var(--size-color);
            background-color: rgba(32, 201, 151, 0.05);
            transform: scale(1.05);
        }
        .breakpoint-name {
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--text-color);
        }
        .breakpoint-range {
            font-family: 'Courier New', monospace;
            color: var(--size-color);
            font-weight: 600;
            margin-bottom: 0.5rem;
        }
        .breakpoint-devices {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .test-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 2rem 0;
        }
        .test-button {
            background-color: rgba(32, 201, 151, 0.1);
            border: 2px solid rgba(32, 201, 151, 0.3);
            border-radius: 8px;
            padding: 1rem 1.5rem;
            font-weight: 600;
            color: var(--size-color);
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
        }
        .test-button:hover {
            background-color: rgba(32, 201, 151, 0.2);
            transform: translateY(-2px);
        }
        .test-button i {
            margin-right: 0.75rem;
        }
        @media (max-width: 768px) {
            .size-visualization {
                height: 250px;
            }
            .stats-container {
                grid-template-columns: 1fr;
            }
            .breakpoint-list {
                flex-direction: column;
            }
            .dimension-value {
                font-size: 2rem;
            }
        }
        .settings-panel {
            background-color: var(--light-gray);
            border-radius: 10px;
            padding: 1.5rem;
            margin: 1.5rem 0;
        }
        .setting-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }
        .setting-item:last-child {
            border-bottom: none;
        }
        .setting-label {
            font-weight: 600;
        }
        .setting-description {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 0.25rem;
        }
        .real-time-indicator {
            display: inline-flex;
            align-items: center;
            background-color: rgba(32, 201, 151, 0.1);
            color: var(--size-color);
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
        }
        .pulse-dot {
            width: 8px;
            height: 8px;
            background-color: var(--size-color);
            border-radius: 50%;
            margin-right: 0.5rem;
            animation: pulse 1.5s infinite;
        }
        @keyframes pulse {
            0% { opacity: 1; }
            50% { opacity: 0.3; }
            100% { opacity: 1; }
        }
        .code-block {
            background-color: #1a1a1a;
            color: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            font-family: 'Courier New', monospace;
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        .code-keyword {
            color: #569cd6;
        }
        .code-function {
            color: #dcdcaa;
        }
        .code-string {
            color: #ce9178;
        }
        .code-comment {
            color: #6a9955;
        }
        .copy-btn {
            position: absolute;
            top: 10px;
            right: 10px;
            background-color: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.2);
            color: white;
            border-radius: 4px;
            padding: 0.25rem 0.75rem;
            font-size: 0.85rem;
            cursor: pointer;
        }