* { box-sizing: border-box; }
:root { color-scheme: dark; font-family: system-ui, -apple-system, sans-serif; }
body { margin: 0; background: #101b19; color: #eef2e6; }
main { max-width: 800px; margin: auto; padding: clamp(24px, 6vw, 60px) 24px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; font-size: 15px; letter-spacing: .16em; text-decoration: none; color: inherit; }
.mark { display: grid; place-items: center; border-radius: 50%; background: #c8e994; color: #17201b;
  width: 38px; height: 38px; font-size: 28px; font-weight: 700; }
.label { margin-top: 64px; color: #c8e994; font-size: 11px; letter-spacing: .14em; }
h1 { margin: 18px 0; font-size: clamp(32px, 6vw, 52px); line-height: 1.1; font-weight: 600; letter-spacing: -.04em; }
h2 { margin-top: 0; font-size: 21px; }
.intro { max-width: 540px; font-size: 17px; line-height: 1.6; color: #bbc9c2; }
section, form { margin-top: 24px; padding: 24px; border: 1px solid #3f5148; border-radius: 18px; background: #192923; }
section form { padding: 0; border: 0; }
label { display: block; margin: 0 0 18px; font-size: 14px; color: #d8e0d6; }
input { display: block; width: 100%; min-height: 48px; padding: 12px; margin-top: 8px; border: 1px solid #657b6c;
  border-radius: 8px; background: #101b19; color: #eef2e6; font: inherit; font-size: 16px; }
button, .primary { display: inline-block; min-height: 46px; border: 0; border-radius: 10px; padding: 12px 20px;
  background: #c8e994; color: #17201b; font: inherit; font-weight: 650; cursor: pointer; text-decoration: none; }
.quiet { background: transparent; color: #d6e3d0; border: 1px solid #526253; margin: 8px 8px 0 0; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
button:disabled { cursor: wait; opacity: .6; }
.hint, footer { color: #9daf9f; font-size: 13px; line-height: 1.7; }
footer { margin-top: 40px; }
#message:not(:empty) { padding: 16px; border: 1px solid #d6ba7d; border-radius: 12px; margin-top: 24px; color: #f0dbb0; }
.qr { display: block; max-width: 100%; border-radius: 12px; margin: 24px 0; }
.secret { display: block; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 14px; line-height: 1.8; padding: 16px;
  background: #0f1915; border-radius: 8px; user-select: all; }
.credentials { border-color: #c8e994; }
.check { display: flex; align-items: center; gap: 12px; }
.check input { width: 20px; height: 20px; min-height: 20px; margin: 0; }
fieldset { border: 0; padding: 12px 0; margin: 0; }
legend { font-size: 13px; color: #9daf9f; }
[hidden] { display: none !important; }
@media (max-width: 450px) { form, section { padding: 18px; } main { padding: 24px 18px; } .label { margin-top: 44px; } }