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gap-countdown{0%{transform:scaleX(0)}to{transform:scaleX(1)}}@keyframes immersive-ready-frame{0%{border-color:#2a313b;box-shadow:0 24px 80px #00000061}45%{border-color:#48a98fb8;box-shadow:0 24px 80px #00000061,0 0 0 3px #48a98f1f}to{border-color:#48917e70;box-shadow:0 24px 80px #00000061,0 0 0 1px #48a98f0f}}:root:fullscreen,:root:-webkit-full-screen{background:#111418}.app.immersive{display:grid;place-items:center;max-width:none;min-height:100vh;padding:clamp(16px,4vw,48px)}.app.immersive>:not(.reading-stage){display:none}.app.immersive .reading-stage{width:min(1120px,100%);min-height:min(680px,calc(100vh - (2*clamp(16px,4vw,48px))));display:flex;flex-direction:column;justify-content:flex-start;padding:clamp(20px,4vw,48px);overflow-y:auto;border-radius:20px;box-shadow:0 24px 80px #00000061}.app.immersive .reading-stage.phase-idle{border-color:#48917e70;animation:immersive-ready-frame 1.1s ease-out both}.app.immersive .reading-stage.phase-idle .reader-cue{display:none}.app.immersive 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