body {
    font-family: Arial, sans-serif;
    background: #f9f9f9;
    margin: 0;
    padding: 0;
    color: #333;
}

header {
    background: linear-gradient(135deg, #6BA8A9, #A3D2CA);
    color: white;
    text-align: center;
    padding: 40px 20px;
}

    header h1 {
        margin: 0;
        font-size: 32px;
    }

nav {
    background: #6BA8A9;
    padding: 10px;
    text-align: center;
}

    nav a {
        color: white;
        margin: 0 15px;
        text-decoration: none;
        font-weight: bold;
        transition: color 0.3s;
    }

        nav a:hover {
            color: #FFE082; /* 柔和的亮黃色點綴 */
        }

main {
    padding: 20px;
    max-width: 900px;
    margin: auto;
}

.step {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: white;
    padding: 20px;
    margin: 20px 0;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    gap: 20px;
    transition: transform 0.2s, box-shadow 0.2s;
}

    .step:hover {
        transform: translateY(-3px);
        box-shadow: 0 6px 16px rgba(0,0,0,0.12);
    }

.step-text {
    flex: 1;
}

.step-img {
    flex: 1;
    text-align: center;
}

    .step-img img {
        max-width: 100%;
        border-radius: 10px;
        border: 2px solid #eee;
    }