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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: #222;
    background: #fff;
    padding: 20px;
}

header, main, footer {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    padding: 1rem 0;
}

header, main, footer, p, h1, h2, h3, a, label, input, textarea, button {
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 2rem;
    margin: 2rem 0 1rem;
}

p {
    margin-bottom: 1rem;
}

a {
    color: #0066cc;
    text-decoration: none;
    border-bottom: 1px solid transparent;
}

a:hover {
    border-bottom-color: currentColor;
}

section p a[href="/feedback.html"] {
    display: inline-block;
    background: #0066cc;
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    margin: 1rem 0;
    border: none;
}

form {
    max-width: 500px;
    margin: 2rem auto;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

input, textarea {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1.5rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    text-align: left;
}

button[type="submit"] {
    background: #0066cc;
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 30px;
    font-size: 1.2rem;
    cursor: pointer;
    width: 100%;
}

footer {
    margin-top: 3rem;
    font-size: 0.9rem;
    color: #666;
}

.error-page {
    text-align: center;
    margin-top: 4rem;
    margin-bottom: 4rem;
}

.error-page h1 {
    font-size: 6rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.error-page p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}