:root { color-scheme: light dark; }
body {
  margin: 0;
  font: 16px/1.4 -apple-system, system-ui, sans-serif;
  background: var(--tg-theme-bg-color, #fff);
  color: var(--tg-theme-text-color, #111);
}
main { max-width: 32rem; margin: 0 auto; padding: 1rem; }
h1 { font-size: 1.25rem; margin: 0 0 1rem; }
label { display: block; margin-bottom: 0.9rem; font-size: 0.9rem; color: var(--tg-theme-hint-color, #555); }
label > input, label > select {
  display: block; width: 100%; box-sizing: border-box; margin-top: 0.25rem; padding: 0.55rem;
  font-size: 1rem; border-radius: 8px; border: 1px solid var(--tg-theme-hint-color, #ccc);
  background: var(--tg-theme-secondary-bg-color, #f4f4f5); color: var(--tg-theme-text-color, #111);
}
.row { display: flex; gap: 0.75rem; }
.row > label { flex: 1; }
.check { display: flex; align-items: center; gap: 0.5rem; color: var(--tg-theme-text-color, #111); }
.check > input { width: auto; margin: 0; }
.hint { font-size: 0.8rem; opacity: 0.7; }
.error { color: #d33; min-height: 1.2em; }
.notice { padding: 0.75rem; border-radius: 8px; background: var(--tg-theme-secondary-bg-color, #f4f4f5); }
button {
  width: 100%; padding: 0.8rem; font-size: 1rem; border: 0; border-radius: 10px;
  background: var(--tg-theme-button-color, #2481cc); color: var(--tg-theme-button-text-color, #fff);
}
button:disabled { opacity: 0.5; }