* {
    box-sizing: border-box;
}
body {
    font-family: "Segoe UI", sans-serif;
    margin: 0;
    background: #f3f4f6;
    color: #333;
}
header {
    background: #1f2937;
    color: white;
    padding: 2em;
    text-align: center;
}
main {
    max-width: 900px;
    margin: auto;
    padding: 2em;
}
h2 {
    color: #1f2937;
    margin-top: 1.5em;
}
ul {
    padding: 0;
    list-style: none;
}
ul li {
    margin: 0.5em 0;
}
ul li i {
    color: #0f62fe;
    margin-right: 0.5em;
}
form {
    display: flex;
    flex-direction: column;
    gap: 0.8em;
    margin-top: 1em;
}
input, textarea {
    padding: 0.6em;
    border: 1px solid #ccc;
    border-radius: 5px;
}
button {
    background: #0f62fe;
    color: white;
    border: none;
    padding: 0.8em;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
}
button:hover {
    background: #0043ce;
}
footer {
    background: #e5e7eb;
    text-align: center;
    padding: 1em;
    font-size: 0.9em;
    margin-top: 2em;
}
@media (max-width: 600px) {
    body {
        font-size: 16px;
    }
    main {
        padding: 1em;
    }
}