body {
    font-family: -apple-system, Segoe UI, Helvetica, Arial, sans-serif;
    background: #f5f6f8;
    color: #222;
    margin: 0;
}
.container {
    max-width: 640px;
    margin: 40px auto;
    background: #fff;
    padding: 32px;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}
h1 { margin-top: 0; }
label { display: block; margin-top: 14px; font-weight: 600; font-size: 0.9em; }
input, select, textarea {
    width: 100%;
    padding: 8px;
    margin-top: 4px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 1em;
}
button {
    margin-top: 20px;
    padding: 10px 20px;
    background: #2563eb;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
}
button:hover { background: #1e4fce; }
a { color: #2563eb; }