.elementor-31596 .elementor-element.elementor-element-67556aaf{--display:flex;}.elementor-widget-text-editor{font-family:var( --e-global-typography-text-font-family ), Sans-serif;font-size:var( --e-global-typography-text-font-size );font-weight:var( --e-global-typography-text-font-weight );line-height:var( --e-global-typography-text-line-height );}.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:var( --e-global-color-primary );}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap, .elementor-widget-text-editor.elementor-drop-cap-view-default .elementor-drop-cap{color:var( --e-global-color-primary );border-color:var( --e-global-color-primary );}@media(max-width:1024px){.elementor-widget-text-editor{font-size:var( --e-global-typography-text-font-size );line-height:var( --e-global-typography-text-line-height );}}@media(max-width:767px){.elementor-widget-text-editor{font-size:var( --e-global-typography-text-font-size );line-height:var( --e-global-typography-text-line-height );}}/* Start custom CSS for text-editor, class: .elementor-element-24a1cca5 */:root {
            --primary-color: #2563eb;
            --secondary-color: #1e40af;
            --accent-color: #3b82f6;
            --text-primary: #1f2937;
            --text-secondary: #6b7280;
            --bg-primary: #ffffff;
            --bg-secondary: #f8fafc;
            --bg-accent: #eff6ff;
            --border-color: #e5e7eb;
            --success-color: #10b981;
            --warning-color: #f59e0b;
            --error-color: #ef4444;
            --code-bg: #f1f5f9;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }

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

        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            font-size: 16px;
        }

        .course-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        .chapter {
            background: var(--bg-primary);
            border-radius: 12px;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
            overflow: hidden;
        }

        .chapter-header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 2rem;
            position: relative;
        }

        .chapter-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.1"><circle cx="30" cy="30" r="2"/></g></svg>') repeat;
            opacity: 0.3;
        }

        .chapter-number {
            font-size: 0.875rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 0.5rem;
            opacity: 0.9;
        }

        .chapter-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            position: relative;
            z-index: 1;
        }

        .chapter-subtitle {
            font-size: 1.125rem;
            opacity: 0.9;
            position: relative;
            z-index: 1;
        }

        .chapter-content {
            padding: 2rem;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        h1 { font-size: 2.5rem; }
        h2 { 
            font-size: 1.875rem; 
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 0.5rem;
            margin-top: 2rem;
        }
        h3 { 
            font-size: 1.5rem;
            margin-top: 1.5rem;
        }
        h4 { font-size: 1.25rem; }
        h5 { font-size: 1.125rem; }

        p {
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .learning-objectives {
            background: var(--bg-accent);
            border-left: 4px solid var(--primary-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }

        .learning-objectives h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
            font-size: 1.25rem;
        }

        .objectives-list {
            list-style: none;
            padding: 0;
        }

        .objectives-list li {
            padding: 0.5rem 0;
            position: relative;
            padding-left: 2rem;
        }

        .objectives-list li::before {
            content: '🎯';
            position: absolute;
            left: 0;
            top: 0.5rem;
        }

        .info-box {
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 8px;
            border-left: 4px solid;
        }

        .info-box.note {
            background: #eff6ff;
            border-left-color: var(--primary-color);
        }

        .info-box.warning {
            background: #fef3c7;
            border-left-color: var(--warning-color);
        }

        .info-box.expert {
            background: #f0fdf4;
            border-left-color: var(--success-color);
        }

        .info-box.mistake {
            background: #fef2f2;
            border-left-color: var(--error-color);
        }

        .info-box-title {
            font-weight: 600;
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .equation {
            background: var(--code-bg);
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 6px;
            font-family: 'Courier New', monospace;
            text-align: center;
            border: 1px solid var(--border-color);
        }

        .equation-number {
            float: right;
            color: var(--text-secondary);
            font-size: 0.875rem;
        }

        code {
            background: var(--code-bg);
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
            font-family: 'Courier New', monospace;
            font-size: 0.875rem;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            background: var(--bg-primary);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

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

        th {
            background: var(--bg-secondary);
            font-weight: 600;
            color: var(--text-primary);
        }

        tr:hover {
            background: var(--bg-secondary);
        }

        ul, ol {
            margin: 1rem 0;
            padding-left: 2rem;
        }

        li {
            margin: 0.5rem 0;
        }

        .assessment {
            background: var(--bg-secondary);
            border: 2px solid var(--border-color);
            border-radius: 8px;
            padding: 1.5rem;
            margin: 2rem 0;
        }

        .assessment h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
        }

        .question {
            margin: 1rem 0;
            padding: 1rem;
            background: var(--bg-primary);
            border-radius: 6px;
            border-left: 3px solid var(--accent-color);
        }

        .question-number {
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }

        .diagram-container {
            text-align: center;
            margin: 2rem 0;
            padding: 1rem;
            background: var(--bg-secondary);
            border-radius: 8px;
        }

        .diagram-container svg {
            max-width: 100%;
            height: auto;
        }

        .chapter-summary {
            background: linear-gradient(135deg, var(--bg-accent), #f0f9ff);
            padding: 2rem;
            border-radius: 8px;
            margin: 2rem 0;
            border: 1px solid var(--border-color);
        }

        .chapter-summary h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
        }

        .key-points {
            list-style: none;
            padding: 0;
        }

        .key-points li {
            padding: 0.5rem 0;
            position: relative;
            padding-left: 2rem;
        }

        .key-points li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0.5rem;
            color: var(--success-color);
            font-weight: bold;
        }

        .references {
            background: var(--bg-secondary);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }

        .references h3 {
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .references ol {
            font-size: 0.9rem;
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .course-container {
                padding: 10px;
            }

            .chapter-header {
                padding: 1.5rem;
            }

            .chapter-title {
                font-size: 1.5rem;
            }

            .chapter-content {
                padding: 1.5rem;
            }

            h1 { font-size: 2rem; }
            h2 { font-size: 1.5rem; }
            h3 { font-size: 1.25rem; }

            table {
                font-size: 0.875rem;
            }

            th, td {
                padding: 0.75rem 0.5rem;
            }
        }

        @media (max-width: 480px) {
            .chapter-header {
                padding: 1rem;
            }

            .chapter-content {
                padding: 1rem;
            }

            .chapter-title {
                font-size: 1.25rem;
            }

            .info-box, .assessment {
                padding: 1rem;
            }
        }/* End custom CSS */