:root{--orange: #e8892b;--orange-deep: #c96f15;--ink: #2b2117;--paper: #fdf7ef;--intro-cover-image: url(../media/cover.webp);--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{height:100%;overscroll-behavior:none}body{font-family:Avenir Next,PingFang SC,system-ui,sans-serif;background:#111;color:var(--ink);touch-action:manipulation;user-select:none;-webkit-user-select:none}#app{position:relative;width:100%;height:100dvh;overflow:hidden}#camera-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;display:none}#camera-bg.active{display:block}#ar-layer{position:absolute;inset:0;z-index:1;display:none;touch-action:none}#ar-layer 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