* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #f6f8fa, #e2e8f0);
        color: #333;
        line-height: 1.6;
    }
    header {
        background: linear-gradient(90deg, #4facfe, #00f2fe);
        color: white;
        padding: 40px 20px;
        text-align: center;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    header h1 {
        font-size: 2.5rem;
        margin-bottom: 10px;
    }
    header p {
        font-size: 1.1rem;
    }
    nav {
        display: flex;
        justify-content: center;
        background-color: #fff;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }
    nav a {
        padding: 15px 25px;
        text-decoration: none;
        color: #333;
        font-weight: 500;
        transition: 0.3s;
    }
    nav a:hover {
        background: #4facfe;
        color: white;
        border-radius: 5px;
    }
    main {
        padding: 50px 20px;
        max-width: 1200px;
        margin: auto;
    }
    .cards {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
        margin-top: 30px;
    }
    .card {
        background: white;
        border-radius: 15px;
        padding: 30px;
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        text-align: center;
        transition: transform 0.3s, box-shadow 0.3s;
    }
    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 12px 25px rgba(0,0,0,0.15);
    }
    .card h3 {
        margin-bottom: 15px;
        color: #4facfe;
    }
    .card p {
        color: #666;
    }
    .button {
        display: inline-block;
        margin-top: 15px;
        padding: 12px 25px;
        background: #4facfe;
        color: white;
        border: none;
        border-radius: 8px;
        cursor: pointer;
        transition: 0.3s;
        font-weight: bold;
        text-decoration: none;
    }
    .button:hover {
        background: #00f2fe;
    }
    #dynamic-content {
        margin-top: 40px;
        padding: 20px;
        background: #f0f4f8;
        border-radius: 12px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.05);
        text-align: center;
        font-size: 1.1rem;
        color: #333;
    }
    form {
        margin-top: 50px;
        background: white;
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }
    form input, form button {
        width: 100%;
        padding: 12px 15px;
        margin-top: 15px;
        border-radius: 8px;
        border: 1px solid #ccc;
        font-size: 1rem;
    }
    form button {
        background: #4facfe;
        color: white;
        border: none;
        font-weight: bold;
        cursor: pointer;
        transition: 0.3s;
    }
    form button:hover {
        background: #00f2fe;
    }
    #form-response {
        text-align: center;
        margin-top: 20px;
        font-weight: bold;
        color: #4facfe;
    }
    footer {
        text-align: center;
        padding: 30px 20px;
        margin-top: 50px;
        background: #333;
        color: white;
    }