:root {
    --orange: #ff7a00;
    --gray: #f6f6f6;
    --dark: #222;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
    margin: 0;
    color: var(--dark);
    background: white;
    line-height: 1.6;
}
header {
    background: linear-gradient(135deg, #ff9b3f, #ff7a00);
    color: white;
    text-align: center;
    padding: 2rem 1rem 2rem;
}
.btn {
    background: white;
    color: var(--orange);
    padding: 0.9rem 1.6rem;
    border-radius: 1.5rem;
    font-weight: 600;
    text-decoration: none;
}
section {
    max-width: 900px;
    margin: 4rem auto;
    padding: 0 1.5rem;
}
h2 {
    color: var(--orange);
}
footer {
    text-align: center;
    background: var(--gray);
    padding: 2rem 1rem;
    font-size: 0.9rem;
}
footer a {
    color: var(--orange);
    text-decoration: none;
}
footer a:hover {
    text-decoration: underline;
}
nav a {
    color: var(--orange);
    text-decoration: none;
    margin: 0 0.5rem;
}
nav a:hover {
    text-decoration: underline;
}
header nav a {
    color: white;
}
header nav a.active {
    text-decoration: underline;
}
footer a.active {
    color: black;
}