:root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --accent-color: #e74c3c;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --success-color: #27ae60;
            --warning-color: #f39c12;
            --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: var(--font-main);
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .header {
            background-color: var(--primary-color);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        
        .header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .header h1 {
            font-size: 1.5rem;
            font-weight: 600;
        }
        
        .nav ul {
            display: flex;
            list-style: none;
        }
        
        .nav ul li {
            margin-left: 20px;
        }
        
        .nav ul li a {
            color: white;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s;
        }
        
        .nav ul li a:hover {
            color: var(--secondary-color);
        }
        
        .hero {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 3rem 0;
            text-align: center;
        }
        
        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            font-weight: 700;
        }
        
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 1.5rem;
        }
        
        .btn {
            display: inline-block;
            background-color: var(--accent-color);
            color: white;
            padding: 0.8rem 1.5rem;
            border-radius: 5px;
            text-decoration: none;
            font-weight: 600;
            transition: background-color 0.3s;
        }
        
        .btn:hover {
            background-color: #c0392b;
        }
        
        .main {
            padding: 3rem 0;
        }
        
        .section {
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.05);
            padding: 2rem;
            margin-bottom: 2rem;
        }
        
        .section h2 {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light-color);
            font-size: 1.8rem;
        }
        
        .section h3 {
            color: var(--secondary-color);
            margin: 1.5rem 0 1rem;
            font-size: 1.4rem;
        }
        
        .framework {
            background-color: #f8f9fa;
            border-left: 4px solid var(--secondary-color);
            padding: 1.5rem;
            margin-bottom: 2rem;
        }
        
        .framework h3 {
            color: var(--primary-color);
            margin-top: 0;
        }
        
        .framework-item {
            margin-bottom: 1rem;
        }
        
        .framework-item strong {
            color: var(--secondary-color);
            font-size: 1.1rem;
            display: block;
            margin-bottom: 0.3rem;
        }
        
        .question-category {
            margin-bottom: 2rem;
        }
        
        .question {
            background-color: #f8f9fa;
            padding: 1rem;
            border-radius: 5px;
            margin-bottom: 1rem;
        }
        
        .question strong {
            color: var(--primary-color);
            display: block;
            margin-bottom: 0.5rem;
        }
        
        .question p {
            color: #666;
            font-style: italic;
            font-size: 0.9rem;
        }
        
        .example {
            background-color: #fff;
            border-left: 3px solid var(--success-color);
            padding: 1rem;
            margin-bottom: 1.5rem;
        }
        
        .example strong {
            color: var(--success-color);
            display: block;
            margin-bottom: 0.5rem;
        }
        
        .checklist {
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-radius: 5px;
        }
        
        .checklist h3 {
            margin-top: 0;
            margin-bottom: 1rem;
        }
        
        .checklist ul {
            list-style-type: none;
        }
        
        .checklist ul li {
            margin-bottom: 0.8rem;
            padding-left: 1.5rem;
            position: relative;
        }
        
        .checklist ul li:before {
            content: '✓';
            color: var(--success-color);
            position: absolute;
            left: 0;
        }
        
        .tip {
            background-color: #fff3cd;
            border-left: 3px solid var(--warning-color);
            padding: 1rem;
            margin-bottom: 1.5rem;
        }
        
        .tip strong {
            color: var(--warning-color);
            display: block;
            margin-bottom: 0.5rem;
        }
        
        .footer {
            background-color: var(--dark-color);
            color: white;
            padding: 2rem 0;
            text-align: center;
        }