body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: linear-gradient(180deg, #f4f6f8, #eaeef3);
    margin: 0;
    padding: 2rem 1rem;
    color: #222;
}

a {
    color: #4f7cff;
    font-weight: 500;
    text-decoration: none;
}

a::after {
    content: " →";
    opacity: 0;
    transition: opacity 0.2s ease;
}

li:hover a::after {
    opacity: 1;
}
a:hover {
    text-decoration: underline;
}
ul {
    list-style: none;
    padding: 0;
    margin-top: 1rem;
}

li {
    padding: 0.75rem 1rem;
    margin-bottom: 0.6rem;
    background: #f7f9fc;
    border-radius: 8px;
    display: flex;
    align-items: center;
    transition: all 0.2s ease;
}

li:hover {
    background: #eef3ff;
    transform: translateX(4px);
}
h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

h2 {
    margin-top: 2rem;
    font-size: 1.3rem;
    color: #333;
    border-left: 4px solid #4f7cff;
    padding-left: 0.6rem;
}

p {
    color: #555;
}
ellipse {
    fill:none;
    stroke:black;
    stroke-width:2
}
polygon{
    fill:lime;
    stroke:black;
    stroke-width:3
}
line{
    stroke:black;
    stroke-width:2
}