html, body {
    height: 100%;
    margin: 0;
}

body {
    color: #333333;
}

a {
    color: #3498db;
    text-decoration: none;
}

a:hover {
    color: #217dbb;
}

.button {
    padding: 0.5rem 1rem;
    background-color: #3498db;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
    margin-left: 0.5rem;
}

.button:hover {
    background-color: #a2d9ff;
    color: #000000;
}

.button:first-of-type {
    margin-left: 0;
}

header, main, footer {
    padding: 1rem;
}

.intro {
    text-align: center;
    padding: 2rem 2rem 1rem 2rem;
}

main {
    flex: 1 0 auto;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

@media (max-width: 768px) {
    .features {
        grid-template-columns: 1fr;
    }
}

.features .feature {
    background: #ffffff;
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.features .feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    color: #5f99e8;
    cursor: pointer;
}

.features .feature h2 {
    color: #5f99e8;
    margin-bottom: 0.5rem;
}

.footer-site {
    background-color: #3A75C4;
    color: #ffffff;
    text-align: center;
    padding: 10px;
    font-size: 14px;
}

.footer-site p {
    margin-top: 1rem;
}

.footer-site a {
    color: #ffffff;
    text-decoration: underline;
}

.footer-site a:hover {
    color: #e6e6e6;
}

.company-section {
    padding: 40px;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    margin: 20px auto;
    max-width: 800px;
}

.company-section h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.company-section .company-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.company-section .company-text {
    flex: 1;
    max-width: 600px;
}

.company-section .philosopher-photo {
    width: 100%;
    max-width: 300px;
    height: auto;
    margin: 0 20px 20px;
    border-radius: 4px;
}

.company-section p {
    text-align: justify;
    margin-bottom: 15px;
    line-height: 1.6;
    color: #555;
}

.section {
    padding: 40px;
    background-color: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin: 40px auto;
    max-width: 1000px;
}

.section h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.features .feature-locked {
    background-color: #dadada;
    padding: 1rem;
    border-radius: 8px;
}