.back-button {
            display: inline-block;
            margin-bottom: 30px;
            text-decoration: none;
            color: #2575fc;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 16px;
            border-radius: 8px;
            background: #f0f7ff;
            transition: all 0.3s ease;
        }
        
        .back-button:hover {
            background: #e1eeff;
            text-decoration: none;
        }
        
        .horizontal-scroll {
            width: 100%;
            overflow-x: auto;
            margin-bottom: 30px;
            padding-bottom: 10px;
        }
        
        .horizontal-scroll::-webkit-scrollbar {
            height: 8px;
        }
        
        .horizontal-scroll::-webkit-scrollbar-track {
            background: #f1f1f1;
            border-radius: 4px;
        }
        
        .horizontal-scroll::-webkit-scrollbar-thumb {
            background: #c1c1c1;
            border-radius: 4px;
        }
        
        .framework-row {
            display: flex;
            gap: 15px;
            padding: 10px 5px;
            width: max-content;
        }
        
        .framework-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: white;
            border-radius: 12px;
            padding: 20px 15px;
            text-decoration: none;
            color: inherit;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            border: 2px solid transparent;
            min-width: 150px;
            max-width: 150px;
            min-height: 150px;
            text-align: center;
            flex-shrink: 0;
        }
        
        .framework-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
            border-color: #2575fc;
            background-color: #f8faff;
        }
        
        .framework-icon {
            font-size: 2rem;
            margin-bottom: 15px;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #6a11cb20, #2575fc20);
            border-radius: 12px;
        }
        
        .framework-item h3 {
            font-size: 1.1rem;
            color: #333;
            margin-bottom: 5px;
            font-weight: 600;
        }
        
        .framework-item p {
            color: #666;
            font-size: 0.85rem;
        }




* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, sans-serif;
}

body {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: #333;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    max-width: 1000px;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    padding: 30px;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

h1 {
    font-size: 2.5rem;
    color: #2575fc;
    margin-bottom: 10px;
    background: linear-gradient(90deg, #6a11cb, #2575fc);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.subtitle {
    font-size: 1.1rem;
    color: #666;
    font-weight: 500;
}

.button-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 40px;
}

.nav-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 12px;
    padding: 15px 10px;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    min-height: 120px;
    text-align: center;
}

.nav-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    border-color: #2575fc;
    background-color: #f8faff;
}

.button-icon {
    font-size: 1.8rem;
    margin-bottom: 10px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #6a11cb20, #2575fc20);
    border-radius: 10px;
}

.button-text h3 {
    font-size: 1rem;
    color: #333;
    margin-bottom: 5px;
    font-weight: 600;
}

.button-text p {
    color: #666;
    font-size: 0.8rem;
    line-height: 1.3;
}

footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #eee;
    color: #777;
    margin-top: 10px;
}

@media (max-width: 900px) {
    .button-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 700px) {
    .button-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .nav-button {
        min-height: 110px;
        padding: 12px 8px;
    }
    
    .button-icon {
        width: 45px;
        height: 45px;
        font-size: 1.6rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .container {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .button-grid {
        grid-template-columns: 1fr;
    }
}