:root { 
    --ibm-blue: #0f62fe; 
    --dark: #161616; 
    --light: #f4f4f4; 
    --white: #ffffff; 
}

body { 
    font-family: 'Segoe UI', sans-serif; 
    margin: 0; 
    color: var(--dark); 
    line-height: 1.6; 
}

nav { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    padding: 15px 5%; 
    background: var(--white); 
    border-bottom: 1px solid #ddd; 
    position: sticky; 
    top: 0; 
    z-index: 100; 
}

.logo { 
    font-size: 1.5rem; 
    font-weight: 800; 
    color: var(--ibm-blue); 
    letter-spacing: 1px; 
}

.lang-switcher a { 
    margin-left: 10px; 
    font-size: 0.9rem; 
    font-weight: bold; 
    color: #666; 
    text-transform: uppercase; 
    text-decoration: none; 
}

.lang-switcher a:hover { 
    color: var(--ibm-blue); 
}

header { 
    background: linear-gradient(135deg, #161616 0%, #393939 100%); 
    color: white; 
    padding: 100px 5%; 
    text-align: center; 
}

header h1 { 
    font-size: 3rem; 
    margin-bottom: 20px; 
}

header p { 
    font-size: 1.25rem; 
    max-width: 800px; 
    margin: 0 auto 40px; 
    color: #ccc; 
}

.services { 
    padding: 80px 5%; 
    background: var(--light); 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 30px; 
}

.card { 
    background: white; 
    padding: 40px; 
    border-radius: 4px; 
    border-left: 5px solid var(--ibm-blue); 
    transition: transform 0.3s; 
}

.card:hover { 
    transform: translateY(-5px); 
}

.card h3 { 
    margin-top: 0; 
    color: var(--ibm-blue); 
}

.btn { 
    background: var(--ibm-blue); 
    color: white; 
    padding: 15px 30px; 
    border-radius: 2px; 
    display: inline-block; 
    font-weight: bold; 
    text-decoration: none; 
}

footer { 
    background: var(--dark); 
    color: white; 
    text-align: center; 
    padding: 50px; 
}