body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #ffffff;
    color: #333333;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

header {
    background-color: #1976D2;
    padding: 20px 0;
    color: #ffffff;
    box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.1);
}

header h1 {
    margin: 0;
    font-size: 24px;
    text-transform: uppercase;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: flex-end;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #bbdefb;
}

.hero {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(135deg, #1976D2 0%, #BBDEFB 100%);
    color: #ffffff;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-bottom: 4px solid #757575;
}

.hero h2 {
    margin: 0;
    font-size: 36px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    margin: 0;
    font-size: 18px;
    margin-bottom: 30px;
}

.cta-button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #1565C0;
    color: #ffffff;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    background-color: #0D47A1;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.about-section {
    padding: 60px 20px;
    background-color: #F5F5F5;
    text-align: center;
}

.about-section h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #1976D2;
    font-weight: 700;
}

.about-section p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
    color: #555555;
}

.product-section {
    padding: 60px 20px;
    background-color: #ffffff;
    text-align: center;
}

.product-section h2 {
    font-size: 32px;
    margin-bottom: 40px;
    color: #1976D2;
    font-weight: 700;
}

.product-features {
    display: flex;
    justify-content: space-around;
    text-align: left;
}

.feature {
    max-width: 300px;
    background-color: #F5F5F5;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
}

.feature h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #1976D2;
    border-bottom: 2px solid #757575;
    padding-bottom: 10px;
}

.feature p {
    font-size: 16px;
    line-height: 1.5;
    color: #555555;
}

.contact-section {
    padding: 60px 20px;
    background-color: #1976D2;
    text-align: center;
    color: #ffffff;
}

.contact-section h2 {
    font-size: 32px;
    margin-bottom: 40px;
    font-weight: 700;
}

form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

form input, form textarea, form button {
    width: 100%;
    padding: 15px;
    border: 1px solid #CCCCCC;
    border-radius: 5px;
    font-size: 16px;
}

form input, form textarea {
    background-color: #ffffff;
    color: #333333;
}

form button {
    background-color: #0D47A1;
    color: #ffffff;
    cursor: pointer;
    border: none;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

form button:hover {
    background-color: #08306b;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

footer {
    background-color: #333333;
    padding: 20px 0;
    text-align: center;
    color: #f5f5f5;
    border-top: 4px solid #757575;
}

.subscription-cards {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.subscription-card {
    background-color: #ffffff;
    border: 1px solid #CCCCCC;
    border-radius: 8px;
    padding: 30px 20px;
    width: 300px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: left;
}

.subscription-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.subscription-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #1976D2;
    font-weight: 700;
}

.subscription-card p {
    font-size: 18px;
    margin-bottom: 15px;
    color: #666666;
}

.subscription-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    margin-bottom: 20px;
    flex-grow: 1;
}

.subscription-card ul li {
    font-size: 16px;
    margin-bottom: 10px;
    color: #333333;
}

.subscription-card .price {
    font-size: 24px;
    color: #1976D2;
    font-weight: 700;
    margin-bottom: 20px;
}

.subscription-card .cta-button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #1976D2;
    color: #ffffff;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    text-align: center;
    margin-top: auto;
}

.subscription-card .cta-button:hover {
    background-color: #1565C0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}