body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background: #f9fcfd;
    color: #333;
}

header, footer {
    background: linear-gradient(90deg, #0077b6, #00b4d8, #009688);
    color: white;
    text-align: center;
    padding: 20px 0;
}

h1, h2, h3 {
    color: #0077b6;
    margin-bottom: 15px;
    font-weight: 700;
}

h1::after, h2::after, h3::after {
    content: "";
    display: block;
    width: 60px;
    height: 3px;
    background: #00b4d8;
    margin-top: 5px;
    border-radius: 2px;
}

section {
    padding: 40px;
    max-width: 900px;
    margin: auto;
}

p {
    margin-bottom: 15px;
}

ul {
    margin-left: 20px;
}

a {
    color: #009688;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}