/* Basis-Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
}

/* Grundlayout */
body {
    margin: 0;
    font-family: "Helvetica Neue", Arial, sans-serif;
    background-color: #f4f6f7;
    color: #2b2b2b;
    line-height: 1.6;
}

/* Zentrierter Inhalt */
.container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

/* Inhaltsbox */
.card {
    background-color: #ffffff;
    max-width: 720px;
    width: 100%;
    padding: 2.5rem 3rem;
    border-radius: 4px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

/* Überschrift */
h1 {
    font-size: 1.6rem;
    font-weight: 500;
    margin-top: 0;
    margin-bottom: 1.5rem;
    color: #1f3a4d;
}

/* Absätze */
p {
    margin-bottom: 1.1rem;
}

/* Linkbereich */
.link {
    margin: 0 0 1.5rem;
}

a {
    color: #1f6fa8;
    text-decoration: none;
    font-weight: 500;
}

a:hover,
a:focus {
    text-decoration: underline;
}

/* Signatur */
.signature {
    margin-top: 2rem;
}

/* Responsive Anpassungen */
@media (max-width: 600px) {
    .card {
        padding: 2rem 1.5rem;
    }

    h1 {
        font-size: 1.4rem;
    }
}