html:has(.external-browser[open]){overflow:hidden}
dialog.external-browser[open],dialog.external-browser[open]:has(iframe){position:fixed;inset:auto;top:var(--browser-top,0);left:0;margin:0;width:100vw;max-width:none;height:var(--browser-height,100dvh);max-height:none;padding:0;border:0;border-radius:0;display:flex;flex-direction:column;gap:0;overflow:hidden;background:var(--experience-surface,#fff);color:var(--experience-text,#16251b);box-sizing:border-box;animation:browser-slide-up .24s ease-out}
.external-browser::backdrop{background:#0008}
.external-browser .external-browser-bar{flex:none;display:grid;grid-template-columns:44px minmax(0,1fr) 44px;gap:12px;align-items:center;margin:0;padding:calc(8px + env(safe-area-inset-top)) max(12px,env(safe-area-inset-right)) 8px max(12px,env(safe-area-inset-left));border-bottom:1px solid var(--experience-line,#ddd);position:relative;z-index:2}
.external-browser-bar button{width:44px;height:44px;border:0;border-radius:50%;background:var(--experience-soft,#f1f2f1);color:inherit;font-size:28px;cursor:pointer}
.external-browser-address{text-align:center;min-width:0;line-height:1.25}.external-browser-address strong{display:block;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.external-browser-address small{font-size:11px;color:var(--experience-muted,#66716a)}
.external-browser iframe{order:initial;display:block;flex:1;width:100%;min-height:0;border:0;border-radius:0;margin:0;background:#fff;padding-bottom:env(safe-area-inset-bottom);box-sizing:border-box}
.external-browser-menu{position:absolute;z-index:4;right:max(12px,env(safe-area-inset-right));top:calc(64px + env(safe-area-inset-top));width:min(270px,calc(100vw - 24px));padding:8px;border:1px solid var(--experience-line,#ddd);border-radius:18px;background:var(--experience-surface,#fff);box-shadow:0 12px 35px #0003}
.external-browser-menu a,.external-browser-menu button{display:block;box-sizing:border-box;width:100%;padding:16px 14px;border:0;background:none;color:inherit;text-align:left;font:inherit;text-decoration:none;border-radius:10px;cursor:pointer}.external-browser-menu :is(a,button):hover{background:var(--experience-soft,#f1f2f1)}
.external-browser-loading{position:absolute;top:calc(66px + env(safe-area-inset-top));left:0;right:0;padding:4px 12px;font-size:12px;background:var(--experience-surface,#fff);z-index:1}
.external-browser-loading:before{content:'';display:block;height:2px;margin-bottom:4px;background:var(--experience-brand,#315b2c);animation:browser-loading 1.4s ease-in-out infinite;transform-origin:left}
.external-browser-failure{position:absolute;z-index:2;left:16px;right:16px;bottom:calc(16px + env(safe-area-inset-bottom));padding:16px;border:1px solid var(--experience-line,#ddd);border-radius:16px;background:var(--experience-surface,#fff);box-shadow:0 4px 20px #0002}.external-browser-failure p{margin:0 0 10px}.external-browser-failure button{margin-left:16px}
.external-browser-result{flex:none;padding:12px max(16px,env(safe-area-inset-right)) calc(12px + env(safe-area-inset-bottom));border-top:1px solid var(--experience-line,#ddd);font-size:13px}.external-browser-result p{margin:0 0 6px}.external-browser-result button{background:none;border:0;color:inherit;text-decoration:underline;font:inherit;cursor:pointer}
dialog.external-browser--return[open]{inset:0;margin:0;width:100vw;height:var(--browser-height,100dvh);max-height:none;border-radius:0}.external-browser--return .external-browser-bar{padding:8px 12px}.external-browser--return .external-browser-menu{top:64px}.external-browser-return{padding:24px;display:grid;gap:14px}.external-browser-return h2,.external-browser-return p{margin:0}
.external-browser [hidden]{display:none!important}
@keyframes browser-slide-up{from{transform:translateY(100%)}to{transform:translateY(0)}}@keyframes browser-loading{0%,100%{transform:scaleX(.12)}50%{transform:scaleX(1)}}
@media(prefers-reduced-motion:reduce){dialog.external-browser[open],.external-browser-loading:before{animation:none}}
.external-browser-failure{padding-right:42px}.external-browser-failure [data-browser-dismiss]{position:absolute;right:8px;top:6px;margin:0;width:32px;height:32px;border:0;background:none;color:inherit;font-size:24px;cursor:pointer}
/* Help remains outside the provider viewport so it cannot cover checkout controls. */
.external-browser-failure{position:relative;left:auto;right:auto;bottom:auto;flex:none;margin:0;border-radius:0;border-width:1px 0 0;padding:8px 42px calc(8px + env(safe-area-inset-bottom)) 12px;box-shadow:none;font-size:12px}.external-browser-failure p{margin:0 0 4px}
dialog.external-browser .external-browser-failure{position:relative!important;left:auto!important;right:auto!important;bottom:auto!important;flex:none;margin:0;border-radius:0;border-width:1px 0 0;padding:8px 42px calc(8px + env(safe-area-inset-bottom)) 12px;box-shadow:none;font-size:12px}

.external-browser-return-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:16px}.external-browser-return .external-browser-return-actions>.btn{box-sizing:border-box;display:flex;align-items:center;justify-content:center;width:100%;min-width:0;min-height:48px;margin:0;padding:12px 16px;font:inherit;font-weight:650;line-height:1.25;text-align:center;border-radius:999px}.external-browser-return .external-browser-return-actions>.btn-secondary{background:var(--experience-surface,#fff);color:var(--experience-text,#16251b);border:1px solid var(--experience-line,#ccd5ca)}