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

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #2d3748;
    transition: background-color 0.4s ease;
}

.hub-container {
    max-width: 800px;
    width: 100%;
    padding: 40px 20px;
}

.hub-header {
    text-align: center;
    margin-bottom: 60px;
    color: white;
}

.hub-header h1 {
    font-size: 56px;
    font-weight: 300;
    margin-bottom: 16px;
    letter-spacing: -2px;
    font-feature-settings: 'tnum';
}

.hub-header p {
    font-size: 16px;
    opacity: 0.8;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 600px;
    margin: 0 auto;
}

.hub-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid #e2e8f0;
    padding: 32px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.hub-card:hover {
    background: rgba(255, 255, 255, 1);
    border-color: #4299e1;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.hub-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #1a202c;
    letter-spacing: -0.5px;
}

.hub-card p {
    color: #718096;
    line-height: 1.6;
    font-size: 14px;
}

@media (max-width: 768px) {
    .hub-header h1 {
        font-size: 48px;
    }
    
    .hub-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .hub-card {
        padding: 24px 20px;
    }
}