.external-browser-guide[hidden] { display: none !important; }
.external-browser-guide { position: fixed; inset: 0; z-index: 21000; display: flex; align-items: center; justify-content: center; padding: 20px; font-family: Arial, sans-serif; }
.external-browser-guide__backdrop { position: absolute; inset: 0; background: rgba(0, 0, 0, .65); }
.external-browser-guide__panel { position: relative; width: min(100%, 400px); padding: 28px 24px 24px; border-radius: 16px; background: #fff; color: #202124; box-shadow: 0 14px 45px rgba(0, 0, 0, .25); }
.external-browser-guide__panel h2 { margin: 0 30px 16px 0; font-size: 21px; line-height: 1.3; }
.external-browser-guide__panel p { margin: 0 0 14px; font-size: 15px; line-height: 1.5; }
.external-browser-guide__close { position: absolute; top: 10px; right: 14px; border: 0; background: none; color: #555; font-size: 28px; cursor: pointer; }
.external-browser-guide__done { display: block; width: 100%; margin-top: 22px; padding: 11px; border: 0; border-radius: 8px; background: #087ff5; color: #fff; font-size: 15px; cursor: pointer; }