.btn-primary {

    background: linear-gradient(
        135deg,
        #007bff,
        #0056d6
    );

    box-shadow:
        0 8px 20px rgba(0,123,255,0.25);
}    
.jumbotron {
    padding: 60px 30px;

}    

.jumbotron h1 {
    margin-bottom: 18px;
}
    
.hero-preview {

    display: flex;
    justify-content: center;

    margin-top: 35px;
    margin-bottom: 10px;

    perspective: 1200px;
}

.invoice-preview {

    width: 100%;
    max-width: 300px;

    border-radius: 14px;

    transform:
        rotate(-2deg)
        rotateY(-4deg);

    box-shadow:
        0 20px 50px rgba(0,0,0,0.16),
        0 8px 20px rgba(0,0,0,0.08);

    transition: 0.35s ease;

    background: white;
}

.invoice-preview:hover {

    transform:
        rotate(0deg)
        rotateY(0deg)
        translateY(-4px);

    box-shadow:
        0 28px 60px rgba(0,0,0,0.20),
        0 10px 25px rgba(0,0,0,0.10);
}

/* MOBILE */
@media (max-width: 768px) {

    .invoice-preview {

        max-width: 92%;

        transform: none;
    }

}        
.icon {
    width: 56px;
    height: 56px;

    display: flex;
    align-items: center;
    justify-content: center;

    background: #f3f7ff;
    color: #007bff;

    border-radius: 14px;
}

.icon svg {
    width: 26px;
    height: 26px;
}        
        
.benefits {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;

    margin: 35px 0;
}

.benefit {
    background: white;
    border-radius: 14px;
    border: 1px solid #eef2f7;
    padding: 25px;

    text-align: center;

    box-shadow: 0 4px 18px rgba(0,0,0,0.05);

    transition: 0.2s;
}

.benefit:hover {
    transform: translateY(-3px);
    box-shadow:
        0 12px 30px rgba(0,0,0,0.08);
}

.benefit-icon {
    width: 56px;
    height: 56px;

    margin: auto auto 15px;

    background: #f0f6ff;

    border-radius: 14px;

    display: flex;
    align-items: center;
    justify-content: center;

    color: #007bff;
}

.benefit-icon svg {
    width: 28px;
    height: 28px;
}

.benefit-title {
    font-size: 18px;
    font-weight: bold;

    margin-bottom: 10px;
}

.benefit-text {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
}

/* MOBILE */
@media (max-width: 768px) {

    .benefits {
        grid-template-columns: 1fr;
    }