body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
    line-height: 1.6;
    color: #2d3748;
    background-color: #f7fafc;
}

h1, h2 {
    color: #1a202c;
    margin-top: 1em;
    margin-bottom: 0.8em;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 1.8rem;
    font-weight: 600;
}

p {
    margin-bottom: 1.2em;
}

a {
    color: #4299e1;
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #2b6cb0;
}

.interactive-triangle-container {
    margin: 32px 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
    background-color: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

label {
    font-weight: 500;
    margin-right: 12px;
}

input[type="number"] {
    padding: 8px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 1rem;
    width: 80px;
    transition: border-color 0.2s ease;
}

input[type="number"]:focus {
    outline: none;
    border-color: #4299e1;
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.15);
}

#triangle-canvas {
    width: 400px;
    height: 400px;
    border: none;
    border-radius: 8px;
    background-color: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}