:root{--ink: #121211;--paper: #f7f6ef;--surface: #fcfbf1;--line: #e2e0cb;--muted: #585854;--primary: #004a9b;--red: #c82a2f;font-family:Pretendard Variable,Pretendard,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--ink);text-rendering:optimizeLegibility}*{box-sizing:border-box}html,body{margin:0;height:100%;background:#1a1a18;overscroll-behavior:none}body{min-width:320px}button,input{font:inherit}button{cursor:pointer;color:inherit}#app{height:100dvh}.assistive-text{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.message{display:grid;align-content:center;justify-items:center;gap:12px;height:100dvh;padding:32px;background:var(--paper);text-align:center}.message h1{margin:0;font-size:21px;letter-spacing:-.02em}.message p{margin:0;max-width:40ch;color:var(--muted);font-size:14px;line-height:1.6}.message__error{color:var(--red)!important;font-weight:650}.message--error 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#00000073}.hint__close{position:absolute;top:8px;right:10px;width:34px;height:34px;padding:0;border:0;border-radius:50%;background:transparent;color:var(--muted);font-size:24px;line-height:1}.hint__close:hover{background:#12121112;color:var(--ink)}.hint__arrow{font-size:26px;line-height:1;color:var(--primary);animation:hint-nudge 1.5s ease-in-out infinite}.hint__card strong{font-size:15px;letter-spacing:-.01em}.hint__card p{margin:0;color:var(--muted);font-size:12px;line-height:1.6}.hint__gestures{display:grid;gap:5px;margin:6px 0 2px;padding:12px 0 0;border-top:1px solid var(--line);list-style:none;color:var(--muted);font-size:11px;line-height:1.6}.hint__dismiss{margin-top:4px;padding:11px;border:0;border-radius:10px;background:var(--ink);color:#fff;font-size:13px;font-weight:650}.reader__counter.is-hinted{border-color:#fff;background:#ffffff47;animation:hint-pulse 1.5s ease-in-out infinite}@keyframes hint-nudge{0%,to{translate:0 0}50%{translate:3px -3px}}@keyframes 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