.code-section {
    background: #f8f9fa;
    border-left: 5px solid #149ddd;
    border-radius: 10px;
    padding: 25px;
    margin: 30px 0;
    position: relative;
}

.code-section::before {
    content: "🔧";
    font-size: 1.5rem;
    position: absolute;
    top: 15px;
    left: 15px;
}

.code-section h4 {
    color: #000000;
    margin-bottom: 20px;
    padding-left: 40px;
    font-weight: 600;
}

.json-code {
    background: #2d3748;
    color: #e2e8f0;
    padding: 25px;
    border-radius: 10px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    overflow-x: auto;
    margin-top: 20px;
    border: 1px solid #4a5568;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.json-key {
    color: #81c784;
}

.json-string {
    color: #ffb74d;
}

.json-brace {
    color: #64b5f6;
    font-weight: bold;
}

.section-list {
    margin: 20px 0;
    padding-left: 0;
}

.section-list li {
    list-style: none;
    margin: 15px 0;
    padding: 15px;
    background: white;
    border-left: 4px solid #149ddd;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}


.section-list li strong {
    color: #000000;
    font-weight: 700;
}

.operation-items li {
    transition: transform 0.2s ease;
}

.operation-items li:hover {
    transform: translateX(5px);
}

.data-structure-title {
    color: #000000;
    font-size: 1.6rem;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.data-structure-title::before {
    content: "🏗️";
    font-size: 1.4rem;
}


.json-line { 
    margin: 0; 
    line-height: 1.6;
}
.json-indent-0 { padding-left: 0; }
.json-indent-1 { padding-left: 20px; }
.json-indent-2 { padding-left: 40px; }
.json-indent-3 { padding-left: 60px; }
.json-indent-4 { padding-left: 80px; }