/* Perusasetukset ja fontti */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: #f4f7f6;
            color: #333;
            line-height: 1.6;
        }

        /* Navigointivalikko */
        .navbar {
            background-color: #2c3e50;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .navbar .logo {
            color: #fff;
            font-size: 1.5rem;
            font-weight: bold;
            text-decoration: none;
        }

        .nav-links {
            list-style: none;
            display: flex;
            gap: 1.5rem;
        }

        .nav-links a {
            color: #cbd5e1;
            text-decoration: none;
            font-size: 1rem;
            transition: color 0.3s;
        }

        .nav-links a:hover {
            color: #fff;
        }

        /* Pääsisältöalue */
        .container {
            max-width: 1100px;
            margin: 2rem auto;
            padding: 0 1.5rem;
        }

        .hero {
            background: linear-gradient(135deg, #3498db, #2c3e50);
            color: white;
            padding: 4rem 2rem;
            border-radius: 8px;
            text-align: center;
            margin-bottom: 2rem;
        }

        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .content-section {
            background: rgb(154, 199, 250);
            margin-bottom: 5px;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
        }

        /* Alatunniste */
        footer {
            text-align: center;
            padding: 2rem;
            margin-top: 4rem;
            background-color: #2c3e50;
            color: #cbd5e1;
            font-size: 0.9rem;
        }

        /* Mobiiliresponsiivisuus */
        @media (max-width: 768px) {
            .navbar {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
            
            .nav-links {
                flex-direction: column;
                gap: 0.8rem;
            }

            .hero h1 {
                font-size: 2rem;
            }
        }