* { box-sizing: border-box; }
body {
    margin: 0;
    padding: 24px;
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: #f3f5f8;
    color: #243044;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.panel {
    width: min(100%, 440px);
    padding: 32px;
    background: #fff;
    border: 1px solid #dce2ea;
    border-radius: 14px;
    box-shadow: 0 8px 28px rgba(20, 35, 55, .08);
}
.panel.wide { width: min(100%, 720px); }
h1 { margin: 0 0 8px; font-size: 1.6rem; }
h2 { margin-top: 28px; font-size: 1.15rem; }
.sub, .note { color: #667085; }
label { display: block; margin: 24px 0 8px; font-weight: 600; }
input[type="text"],
input[type="password"] {
    display: block;
    width: 100%;
    min-height: 46px;
    padding: 12px;
    border: 1px solid #b9c3d0;
    border-radius: 8px;
    background: #fff;
    color: inherit;
    font: inherit;
}
button {
    width: 100%;
    margin-top: 18px;
    padding: 12px 16px;
    border: 0;
    border-radius: 8px;
    background: #245da8;
    color: white;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}
button.secondary { background: #596579; }
.error {
    padding: 12px;
    border-radius: 8px;
    background: #fff0f0;
    color: #9b1c1c;
}
a { color: #245da8; }
.links { line-height: 1.8; }