* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #f5f5f5;
            padding: 2rem;
        }
        
        header {
            margin-bottom: 2rem;
            text-align: center;
        }
        
        h1 {
            color: #2d3748;
            margin-bottom: 0.5rem;
            font-size: 2.5rem;
            font-weight: 700;
        }
        
        .subtitle {
            color: #666;
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }
        
        .intro-text {
            max-width: 800px;
            margin: 0 auto 2.5rem;
            line-height: 1.6;
            color: #444;
            font-size: 1.1rem;
            text-align: left;
            background: #fff;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        
        .intro-text p {
            margin-bottom: 1rem;
        }
        
        .intro-text p:last-child {
            margin-bottom: 0;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .stadtteile-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 2rem;
        }
        
        .stadtteil-card {
            position: relative;
            height: 300px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .stadtteil-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
        }
        
        .stadtteil-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .stadtteil-card:hover img {
            transform: scale(1.05);
        }
        
        .stadtteil-link {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.4rem;
            letter-spacing: 0.5px;
            transition: padding 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        
        .stadtteil-link::after {
            content: "→";
            opacity: 0;
            transform: translateX(-10px);
            transition: opacity 0.3s ease, transform 0.3s ease;
        }
        
        .stadtteil-card:hover .stadtteil-link {
            padding-bottom: 20px;
        }
        
        .stadtteil-card:hover .stadtteil-link::after {
            opacity: 1;
            transform: translateX(0);
        }
        
        footer {
            margin-top: 3rem;
            text-align: center;
            color: #666;
            padding: 1rem 0;
            border-top: 1px solid #ddd;
        }
        
        /* Dummy-Element für viel später geladene externe CSS-Dateien */
        .external-css-loaded { display: none; }
        
        @media (max-width: 768px) {
            .stadtteile-grid {
                grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            }
            
            body {
                padding: 1rem;
            }
            
            .intro-text {
                padding: 1.2rem;
                font-size: 1rem;
            }
            
            .stadtteil-card {
                height: 250px;
            }
        }