:root {
  --bg-color: var(--tg-theme-bg-color, #ffffff);
  --text-color: var(--tg-theme-text-color, #1c1c1e);
  --hint-color: var(--tg-theme-hint-color, #8e8e93);
  --link-color: var(--tg-theme-link-color, #007aff);
  --button-color: var(--tg-theme-button-color, #007aff);
  --button-text-color: var(--tg-theme-button-text-color, #ffffff);
  --secondary-bg-color: var(--tg-theme-secondary-bg-color, #f2f2f7);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; font-family: var(--font-family); }
body { background-color: var(--bg-color); color: var(--text-color); min-height: 100vh; }
.container { max-width: 480px; margin: 0 auto; padding: 16px; display: flex; flex-direction: column; gap: 16px; }
.hidden { display: none !important; }
.fade-in { animation: fadeIn 0.25s ease-in-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }