body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #ffffff;
    color: #333;
}
.service-section {
    max-width: 1200px;
    margin: 60px auto;
    padding: 20px;
}
.service-box {
    border: 1px solid #ddd;
    border-radius: 12px;
    padding: 60px 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    background: #fff;
    position: relative;
    overflow: hidden;
}
.service-box h2 {
    text-align: center;
    color: #1a3cae;
    margin-bottom: 50px;
}
.stack {
    display: flex;
    flex-direction: column;
    gap: 25px;
}
.card {
    padding: 25px;
    border-radius: 12px;
    background: #fff;
    border: 1px solid #ddd;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: 0.3s;
    position: relative;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}
.card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 5px;
}
.card:nth-child(1)::before { background: #1a3cae; }
.card:nth-child(2)::before { background: #4caf50; }
.card:nth-child(3)::before { background: #ff9800; }
.card:nth-child(4)::before { background: #9c27b0; }
.card:hover {
    transform: translateX(8px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
    background: #f7f9ff;
}
.icon {
    font-size: 30px;
    min-width: 40px;
}
.content h3 {
    margin: 0 0 8px 0;
    color: #1a3cae;
}
.content p {
    margin: 0;
    font-size: 0.95rem;
    color: #555;
}
.service-box::after {
    content: "";
    position: absolute;
    right: -120px;
    bottom: -120px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(26,60,174,0.08), transparent);
}
@media (max-width: 600px) {
    .card {
        flex-direction: column;
    }
}