body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(to bottom, #111, #333);
    color: #fff;
}
header.hero {
    text-align: center;
    padding: 3em 1em;
    background-color: #000;
}
.logo {
    max-width: 200px;
}
h1 {
    font-size: 2.5em;
    margin: 0.5em 0;
}
.btn {
    padding: 0.8em 1.5em;
    background-color: #fff;
    color: #000;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
}
.section {
    padding: 2em 1em;
    max-width: 800px;
    margin: auto;
}
.section.dark {
    background-color: #222;
}
ul {
    list-style: none;
    padding: 0;
}
ul li {
    margin: 0.5em 0;
}
form {
    display: flex;
    flex-direction: column;
}
form input, form textarea {
    margin-bottom: 1em;
    padding: 0.7em;
    border: none;
    border-radius: 5px;
}
form button {
    padding: 0.7em;
    background-color: #fff;
    color: #000;
    font-weight: bold;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
.contact-info {
    margin-top: 1em;
}
footer {
    text-align: center;
    padding: 1em;
    background-color: #111;
    font-size: 0.9em;
}