body {
    font-family: "Noto Sans TC", sans-serif;
    background-color: #f9fafb;
    color: #333;
    line-height: 1.6;
    margin: 0;
    padding: 2rem;
}

form {
    max-width: 600px;
    margin: 2rem auto;
    background: #ffffff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

form input[type="text"],
form input[type="email"],
form textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

form textarea {
    min-height: 120px;
}

form button {
    display: inline-block;
    margin-right: 1rem;
    padding: 0.75rem 1.5rem;
    background: #2563eb;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.2s ease;
}

form button:hover {
    background: #1d4ed8;
}

ul {
    margin-top: 1rem;
    padding-left: 1.5rem;
}

ul li {
    margin-bottom: 0.5rem;
}

.alert {
    background: #fef3c7;
    border: 1px solid #fde68a;
    color: #92400e;
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.error {
    background: #fee2e2;
    border: 1px solid #fca5a5;
    color: #991b1b;
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

h2, h3 {
    margin-top: 1.5rem;
    color: #111827;
}

strong {
    font-weight: 600;
}