body { font-family: Arial, sans-serif; margin: 2em; background: #f9f9f9; }
h1, h2, h3 { color: #2a4d7a; }
pre { background: #eee; padding: 1em; border-radius: 5px; overflow-x: auto; }
code { background: #f0f0f0; padding: 2px 4px; border-radius: 3px; }
ul, ol { margin-bottom: 1em; }
.section { margin-bottom: 2em; }
a { color: #1a73e8; text-decoration: none; }
a:hover { text-decoration: underline; }
table { width: 100%; border-collapse: collapse; margin: 1em 0; }
th, td { border: 1px solid #ddd; padding: 8px; text-align: left; }
th { background-color: #f2f2f2; }
.button {
    display: inline-block;
    background: linear-gradient(45deg, #2a4d7a, #4682b4);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    margin: 10px 0;
    transition: transform 0.2s, box-shadow 0.2s;
}
.button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(42, 77, 122, 0.3);
    text-decoration: none;
}
.analogy h4 { 
    margin-top: 0px;
    margin-bottom: 0px;
}
.analogy { 
    background: #e8f4fd; 
    border-left: 4px solid #2a4d7a; 
    padding: 15px; 
    margin: 15px 0; 
    border-radius: 5px;
}
.example-box {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 5px;
    padding: 15px;
    margin: 10px 0;
}
.checklist {
    background: #d4edda;
    border-left: 4px solid #28a745;
    padding: 15px;
    margin: 15px 0;
    border-radius: 5px;
}
.warning {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 15px;
    margin: 15px 0;
    border-radius: 5px;
}
.info {
    background: #cce5ff;
    border-left: 4px solid #007bff;
    padding: 15px;
    margin: 15px 0;
    border-radius: 5px;
}
.js-demo {
    background: #fff5f5;
    border: 2px solid #ff6b6b;
    border-radius: 8px;
    padding: 20px;
    margin: 15px 0;
    text-align: center;
}
.js-demo h4 {
    margin-top: 0;
    color: #d63031;
}
.demo-button {
    background: #ff6b6b;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    margin: 5px;
}
.demo-button:hover {
    background: #e55656;
}
.highlight {
    background: #ffeb3b;
    padding: 2px 4px;
    border-radius: 3px;
}
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 20px 0;
}
.skill-box {
    background: #e8f5e8;
    border: 1px solid #4caf50;
    border-radius: 8px;
    padding: 15px;
}
.skill-box h4 {
    margin-top: 0;
    color: #2e7d32;
}
.checkmark {
    color: #4caf50;
    font-weight: bold;
}