*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:#ccd5d3;color:#344e47}
body{font-family:'Songti SC','STSong',serif;display:grid;place-items:center;min-height:100svh}
.journey{position:relative;width:min(100vw,56.2799svh);display:flex;justify-content:center}
#frames{position:relative;width:min(100vw,56.2799svh);aspect-ratio:941/1672;background:#dce0da;overflow:hidden}
iframe{position:absolute;inset:0;width:100%;height:100%;border:0;opacity:0;pointer-events:none}
iframe.active{opacity:1;pointer-events:auto}
iframe.underlay{opacity:1;pointer-events:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.music-toggle{position:absolute;z-index:10;top:max(14px,env(safe-area-inset-top));right:14px;width:44px;height:44px;display:grid;place-items:center;border:1px solid rgba(52,78,71,.3);border-radius:50%;background:rgba(248,247,237,.9);color:#344e47;box-shadow:0 2px 10px rgba(34,54,48,.08);cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:manipulation}
.music-toggle svg{width:22px;height:22px}
.music-toggle[aria-pressed="true"]{background:#344e47;color:#faf8ea;border-color:#344e47}
.music-toggle[aria-pressed="true"] .music-slash{display:none}
.music-toggle:focus-visible{outline:2px solid #344e47;outline-offset:4px}
.music-toggle:active{transform:scale(.96)}