* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

header {
    margin-bottom: 3rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.2rem;
    color: #6b7280;
}

.tool-section {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 3rem;
}

.tool-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #374151;
}

.tool-section p {
    color: #6b7280;
    font-size: 1rem;
}

footer {
    margin-top: auto;
    color: #9ca3af;
    font-size: 0.875rem;
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
}