:root { color-scheme: light dark; font-family: system-ui, sans-serif; background: #f7f1e4; color: #123d2d; }
* { box-sizing: border-box; }
body { margin: 0; padding: 32px 16px; }
main { max-width: 640px; margin: auto; padding: clamp(20px, 5vw, 48px); background: #fffdf8; border: 1px solid #d3ddcf; border-radius: 24px; }
.brand { font-size: 24px; font-weight: 750; text-decoration: none; }
h1 { font-size: clamp(28px, 5vw, 40px); line-height: 1.15; }
p, li { line-height: 1.65; }
a { color: inherit; }
label { display: grid; gap: 8px; margin: 18px 0; font-weight: 600; }
input { width: 100%; padding: 12px; border: 1px solid #9cac9a; border-radius: 10px; font: inherit; background: #fff; color: #123d2d; }
button, .button { display: inline-block; padding: 12px 20px; border: 1px solid #123d2d; border-radius: 12px; font: inherit; background: #123d2d; color: #f7f1e4; cursor: pointer; text-decoration: none; }
button.secondary { background: transparent; color: inherit; }
form, details { margin: 20px 0; }
.muted { font-size: 14px; }
[role="alert"] { border-left: 4px solid #b44032; padding-left: 12px; }
:focus-visible { outline: 3px solid #79a95b; outline-offset: 3px; }
.qr { background: white; display: inline-block; padding: 16px; max-width: 100%; }
.qr svg { max-width: 100%; height: auto; }
@media (prefers-color-scheme: dark) {
    :root { background: #0c2118; color: #f7f1e4; }
    main { background: #123024; border-color: #395a46; }
    input { background: #0c2118; color: #f7f1e4; border-color: #6f8772; }
    button, .button { background: #b4d398; color: #123d2d; border-color: #b4d398; }
}