html {
    font-size: 16px;
    min-height: 100%;
}

body {
    min-height: 100%;
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #f4f6f8;
    color: #1f2933;
}

header {
    background: #ffffff;
    border-bottom: 1px solid #d9e2ec;
}

nav {
    max-width: 960px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

nav a {
    color: #1f2933;
    text-decoration: none;
    font-weight: 600;
}

nav ul {
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1rem;
    list-style: none;
}

main {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

footer {
    max-width: 960px;
    margin: 0 auto;
    padding: 1rem;
    color: #52606d;
    font-size: 0.9rem;
}

.startbereich,
.inhaltsbereich {
    background: #ffffff;
    border: 1px solid #d9e2ec;
    border-radius: 12px;
    padding: 2rem;
}

.startbereich h1,
.inhaltsbereich h1 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 2.4rem;
}

.startbereich p,
.inhaltsbereich p {
    max-width: 680px;
    line-height: 1.6;
}

.hinweis {
    margin-top: 0;
    color: #52606d;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.fehlerbereich {
    border-color: #f5c2c7;
}