/* Progressive enhancement: native route links survive unavailable scripts. */
header .nav{display:inline-flex;align-items:center;text-decoration:none;cursor:pointer}
a.legacy-return{text-decoration:none}
.interaction-fallback{padding:16px 6%;background:#152537;color:#cad7df;border-bottom:1px solid #758a9b55;font-size:14px;line-height:1.8}
.interaction-fallback strong{color:#e8d5a7;margin-right:6px}
body.app-ready .interaction-fallback{display:none}
/* Secondary pages stay in normal document flow, not overlaid or unreachable. */
body:not(.app-ready) main>.page{display:block}
body:not(.app-ready) main>.page+.page{border-top:1px solid #7e93a14d}
body:not(.app-ready) :is(#play-transmission,#restart-transmission,#copy-post,#copy-letter,#copy-hashtag,#legacy-load-teaser,#legacy-unload-teaser,#export-progress,#reset-progress,.legacy-orbit-controls,.legacy-world-switch){display:none!important}
body:not(.app-ready) :is(label[for="post-choice"],label[for="letter-choice"],#post-choice,#letter-choice){display:none}
body:not(.app-ready) #legacy-scene-help{display:none}
body:not(.app-ready) .legacy-chapter-rail{position:static}