/* รูปภาพประกอบแต่ละขั้นตอน */
.step-img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 10px 0 20px 0;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 0 8px rgba(0,0,0,0.1);
}

/* ส่วนอื่นๆ เหมือนเดิม */
body {
    font-family: "Sarabun", Arial, sans-serif;
    background-color: #f5f7fa;
    margin: 0;
    padding: 0 20px;
    color: #333;
    line-height: 1.6;
}

header {
    background-color: #4e73df;
    color: white;
    padding: 30px 20px;
    text-align: center;
    border-radius: 0 0 15px 15px;
}

header h1 {
    margin: 0 0 10px 0;
    font-size: 2.4em;
}

header p {
    margin: 0;
    font-size: 1.2em;
}

main {
    max-width: 800px;
    margin: 30px auto;
    background-color: white;
    padding: 30px 40px;
    border-radius: 15px;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

main h2 {
    color: #4e73df;
    margin-top: 30px;
    margin-bottom: 15px;
}

ol {
    margin-left: 20px;
    margin-bottom: 20px;
}

ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

a {
    color: #4e73df;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

a.download-link {
    display: inline-block;
    margin-top: 30px;
    padding: 15px 35px;
    background-color: #4e73df;
    color: white;
    font-weight: 700;
    font-size: 1.2em;
    border-radius: 10px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

a.download-link:hover {
    background-color: #3a59c1;
}

footer {
    max-width: 800px;
    margin: 40px auto 20px auto;
    text-align: center;
    color: #777;
    font-size: 0.9em;
}