* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
}

.container {
    text-align: center;
    max-width: 900px;
    padding: 40px;
}

h1 {
    font-size: 2.2rem;
    margin-bottom: 40px;
    line-height: 1.3;
}

.labs {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

.lab-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 30px 24px;
    width: 220px;
    text-decoration: none;
    color: #fff;
    transition: transform 0.2s ease, background 0.2s ease;
}

.lab-card:hover {
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.18);
}

.lab-number {
    font-size: 3rem;
    font-weight: bold;
    display: block;
    margin-bottom: 10px;
}

.lab-title {
    font-size: 1.1rem;
}