* {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            background: #f3f3f1;
            color: #2b2b2b;
            line-height: 1.6;
        }

        header {
            background: #252525;
            color: white;
            padding: 2rem 1rem;
        }

        header .innen {
            max-width: 900px;
            margin: auto;
        }

        header h1 {
            margin: 0;
            font-size: 2rem;
            font-weight: 500;
        }

        header p {
            margin: .4rem 0 0;
            color: #cccccc;
        }

        nav {
            background: #ffffff;
            border-bottom: 1px solid #dddddd;
        }

        nav .innen {
            max-width: 900px;
            margin: auto;
            padding: .8rem 1rem;
        }

        nav a {
            color: #333333;
            text-decoration: none;
            margin-right: 1.5rem;
        }

        nav a:hover {
            text-decoration: underline;
        }

       .seitenlayout {
    max-width: 1160px;
    margin: 2rem auto;
    padding: 0 1rem;

    display: grid;
    grid-template-columns: 220px minmax(0, 900px);
    gap: 2rem;

    align-items: start;
}

main {
    width: 100%;
    min-width: 0;
    margin: 0;
    padding: 0;
}

.seitenbild {
    position: sticky;
    top: 2rem;
}

.seitenbild img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 8px;
}

        .intro {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 2rem;
        }

        .intro img {
            max-width: 100%;
            border-radius: 6px;
            margin-top: 1rem;
        }

        /*
         * Dieser Bereich ist absichtlich scrollbar.
         * Hier können später einfach weitere Beiträge
         * untereinander eingefügt werden.
         */
        .beitraege {
            max-height: 600px;
            overflow-y: auto;

            padding-right: .7rem;
        }

        article {
            background: white;
            padding: 1.5rem;
            margin-bottom: 1.2rem;
            border-radius: 8px;
            border-left: 4px solid #555555;
        }

        article h2 {
            margin-top: 0;
            font-size: 1.3rem;
        }

        article .datum {
            font-size: .85rem;
            color: #777777;
            margin-bottom: 1rem;
        }

        a {
            color: #315d82;
        }

        .linkliste {
            list-style: none;
            padding: 0;
        }

        .linkliste li {
            margin: .5rem 0;
        }

        .linkliste a {
            display: inline-block;
            background: #eeeeec;
            padding: .5rem .8rem;
            border-radius: 4px;
            text-decoration: none;
        }

        .linkliste a:hover {
            background: #ddddda;
        }

        footer {
            max-width: 900px;
            margin: 3rem auto 1rem;
            padding: 1rem;
            border-top: 1px solid #cccccc;
            color: #777777;
            font-size: .85rem;
        }

      .untertitel {
            margin: .25rem 0 0;
            color: #cccccc;
            font-size: 1rem;
            font-style: italic;
            letter-spacing: .03em;
      }

        @media (max-width: 600px) {
            header h1 {
                font-size: 1.6rem;
            }

            nav a {
                display: inline-block;
                margin-bottom: .4rem;
            }

            main {
                margin-top: 1rem;
            }
        }