body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f4f6fb;
    margin: 0;
    padding: 0;
}
.container {
    max-width: 500px;
    margin: 40px auto;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    padding: 32px 24px 24px 24px;
}
h1, h2 {
    text-align: center;
    color: #2d3a4b;
}
#comments-container > div {
    background: #f0f4fa;
    margin-bottom: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    border-left: 4px solid #4f8cff;
}
#comment-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}
#name-input, #comment-input {
    padding: 10px;
    border: 1px solid #cfd8dc;
    border-radius: 6px;
    font-size: 1em;
    background: #f9fbfd;
}
#comment-input {
    min-height: 60px;
    resize: vertical;
}
button[type="submit"] {
    background: #4f8cff;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 10px 0;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.2s;
}
button[type="submit"]:hover {
    background: #2563eb;
}
hr {
    margin: 32px 0 24px 0;
    border: none;
    border-top: 1px solid #e0e7ef;
}