body:has(#title:not(.hidden)){background:#080c12}
body:has(#title:not(.hidden)) .shell{max-width:none;padding:0;display:grid;place-items:center;min-height:100svh;min-height:100dvh}
body:has(#title:not(.hidden)) .masthead,body:has(#title:not(.hidden)) footer{display:none}
#title{width:100%;min-height:0;display:block;position:relative}
.top-frame{position:relative;width:min(100vw,177.7778dvh);aspect-ratio:16/9;margin:auto;overflow:hidden;background:#080c12;isolation:isolate}
.top-background{position:absolute;width:100%;height:100%;object-fit:contain;animation:top-zoom 35s ease-in-out infinite alternate}
.top-frame::after{content:"";position:absolute;inset:60% 0 0;background:linear-gradient(transparent,#080c12cc);z-index:1;pointer-events:none}
.top-logo{position:absolute;left:40%;top:2%;width:20%;margin:0;line-height:0;z-index:2;animation:top-reveal 1.6s both}
.top-logo img{width:100%;height:auto;box-shadow:0 0 30px #080c1266}
.top-menu{position:absolute;left:36%;bottom:9%;width:28%;display:grid;gap:.25rem;z-index:3}
.top-menu button,#top-skip,#top-dialog button{font:500 clamp(14px,1.5vw,21px)/1.5 "Yu Mincho",serif;letter-spacing:.22em;color:#eee9df;background:#080c128c;border:0;border-bottom:1px solid #a3b4c055;min-height:44px;padding:.4em 1em;cursor:pointer}
.top-menu button{position:relative;animation:top-reveal .8s both;animation-delay:.6s}
.top-menu button:nth-child(2){animation-delay:.85s}.top-menu button:nth-child(3){animation-delay:1.1s}
.top-menu button::before{content:"";position:absolute;left:0;top:50%;width:18%;height:1px;background:#e6d9b0;box-shadow:0 0 8px #dae9ff;opacity:0;transition:opacity .2s}
.top-menu button:hover::before,.top-menu button:focus-visible::before{opacity:1}
.top-menu button:focus-visible,#top-skip:focus-visible{outline:1px solid #e6d9b0;outline-offset:2px}
.top-menu button:disabled{filter:opacity(.45);cursor:default}.top-menu button:disabled::before{opacity:0}
#top-status{position:absolute;bottom:3%;left:20%;width:60%;margin:0;text-align:center;z-index:3;font:12px/1.5 system-ui;color:#c6cbd2}
.top-caption{position:absolute;left:max(2%,env(safe-area-inset-left));bottom:3%;margin:0;z-index:2;font:10px/1.5 system-ui;letter-spacing:.2em;color:#d5c5a6}
#top-skip{position:absolute;right:max(2%,env(safe-area-inset-right));top:max(2%,env(safe-area-inset-top));z-index:4;min-height:44px;font-size:11px;letter-spacing:.05em}
.top-light{position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse at 50% 6%,#ff647b22,transparent 13%),radial-gradient(ellipse at 90% 60%,#8bbcff18,transparent 24%);animation:top-glow 7s ease-in-out infinite alternate}
.top-particles{position:absolute;inset:0;pointer-events:none;opacity:.5;background-image:radial-gradient(circle at 12% 12%,#fff 0 1px,transparent 2px),radial-gradient(circle at 73% 18%,#c4dfff 0 1px,transparent 2px),radial-gradient(circle at 90% 78%,#fff 0 1px,transparent 2px),radial-gradient(circle at 27% 70%,#e8d2a5 0 1px,transparent 2px),radial-gradient(circle at 60% 83%,#fff 0 1px,transparent 2px),radial-gradient(circle at 38% 40%,#c4dfff 0 1px,transparent 2px);animation:top-drift 20s linear infinite alternate}
.top-curtain{position:absolute;inset:0;background:#000;opacity:0;pointer-events:none;z-index:5;transition:opacity .55s}
.top-leaving .top-curtain{opacity:1}.top-leaving .top-menu{pointer-events:none}
.top-static .top-background,.top-static .top-light,.top-static .top-particles{animation-play-state:paused}
.top-static .top-logo,.top-static .top-menu button{animation:none}
.top-orientation{display:none}

#top-dialog{width:min(90vw,460px);max-height:85dvh;overflow:auto;color:#e8e5db;background:#11151c;border:1px solid #a3b4c0;padding:1.5rem;font-size:15px}
#top-dialog::backdrop{background:#000b}#top-dialog h2{font-size:1.3rem}#top-dialog label{display:block;margin:1rem 0}#top-dialog input{margin-right:.6rem}#top-dialog button{font-size:14px;margin:.5rem}
#top-dialog form{display:flex;flex-direction:column;max-height:calc(85dvh - 3rem)}
#top-dialog-heading,#top-dialog form>button{flex-shrink:0}
#top-dialog-content{min-height:0;overflow:auto;line-height:1.9;scrollbar-width:thin}
#top-dialog form>button{align-self:flex-start}
@keyframes top-zoom{to{transform:scale(1.018)}}@keyframes top-reveal{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}@keyframes top-glow{to{opacity:.35}}@keyframes top-drift{to{transform:translateY(-12px)}}
@media(orientation:landscape) and (max-height:550px){.top-frame{width:100vw;height:100dvh;aspect-ratio:auto}.top-background{object-fit:contain}.top-logo{left:41%;width:18%;top:max(1%,env(safe-area-inset-top))}.top-menu{left:36%;width:28%;bottom:max(9%,calc(env(safe-area-inset-bottom) + 26px));gap:0}.top-menu button{font-size:14px;min-height:44px;padding:3px}#top-status{bottom:max(2%,env(safe-area-inset-bottom));font-size:10px}.top-caption{display:none}}
@media(orientation:portrait) and (max-width:700px){#title{padding:env(safe-area-inset-top) 0 env(safe-area-inset-bottom)}.top-frame{width:100%;height:auto;aspect-ratio:16/9;overflow:visible;margin-bottom:315px}.top-logo{left:36%;width:28%;top:1%}.top-menu{top:100%;bottom:auto;left:15%;width:70%;padding-top:12px}.top-menu button{font-size:18px;min-height:48px}#top-status{top:calc(100% + 275px);bottom:auto;left:5%;width:90%}.top-caption{display:none}#top-skip{font-size:9px;min-height:36px;padding:4px}.top-orientation{display:block;text-align:center;padding:0 1rem;margin:0;color:#c6cbd2;font:13px/1.9 system-ui}.top-curtain{bottom:-315px}}
@media(prefers-reduced-motion:reduce){#title *,#title *::before{animation:none!important;transition:none!important}}
@media(orientation:landscape) and (max-height:350px){.top-menu{left:10%;width:80%;grid-template-columns:repeat(3,1fr);gap:.5rem;bottom:max(12%,calc(env(safe-area-inset-bottom) + 25px))}}