:root{color-scheme:dark;--bg:#202329;--panel:#292d34;--text:#f6f5f3;--muted:#b6bbc4;--accent:#ee784e;--toolbar-height:72px;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);overflow:hidden}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.3}button,input{color:inherit}button{border:1px solid transparent}button:hover:not(:disabled){background:#414650}button:focus-visible,input:focus-visible{outline:3px solid #ffaf8e;outline-offset:3px}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
#viewer{height:100vh;height:100dvh;display:flex;flex-direction:column;padding-bottom:env(safe-area-inset-bottom)}.stage{flex:1;min-height:0;position:relative;touch-action:pan-y}.slide{margin:0;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(calc(100% - 32px),calc((100dvh - var(--toolbar-height) - 32px - env(safe-area-inset-bottom))*16/9));aspect-ratio:16/9;background:#f8f4fa;box-shadow:0 12px 44px #0003;overflow:hidden}.slide img{display:block;width:100%;height:100%;object-fit:contain}.slide[aria-busy=true] img{visibility:hidden}.load-status{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);padding:16px 22px;background:#202329ed;border-radius:12px;font-size:14px;max-width:90%;text-align:center;line-height:1.8}.load-status button{display:block;margin:10px auto 0;padding:8px 20px;background:#e4572a;border-radius:6px}
.toolbar{flex:none;min-height:var(--toolbar-height);display:flex;align-items:center;justify-content:space-between;gap:20px;padding:10px 24px;position:relative;background:var(--bg)}.brand{display:flex;align-items:center;gap:16px;flex:1;min-width:0}.brand-mark{font-size:20px;font-weight:900;letter-spacing:-1px;color:var(--accent)}.deck-label{font-size:12px;color:var(--muted);white-space:nowrap}.page-controls,.tools{display:flex;align-items:center;gap:8px}.tools{flex:1;justify-content:flex-end}.icon-button,.tool-button{min-height:42px;border-radius:8px;background:var(--panel);font-size:13px;white-space:nowrap}.icon-button{min-width:42px;font-size:22px;line-height:1}.tool-button{padding:0 14px}.help-button{font-size:17px}.page-number{display:flex;align-items:center;gap:4px;margin:0 4px;font-variant-numeric:tabular-nums;white-space:nowrap}.page-number input{background:transparent;border:1px solid transparent;border-radius:6px;width:48px;text-align:center;font-size:16px;padding:8px 2px;appearance:textfield;-moz-appearance:textfield}.page-number input:hover{border-color:#515761}.page-number input::-webkit-inner-spin-button,.page-number input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.page-total{font-size:14px;color:var(--muted)}.audio-tool{color:#ffc1a7;border:1px solid #80503e;min-width:86px}.audio-tool[aria-pressed=true]{background:#713c28;color:white}.progress-track{position:absolute;bottom:0;left:0;right:0;height:3px;background:#ffffff0c}#progress{height:100%;background:var(--accent);width:0}
.slide-audio{position:absolute;background:transparent;border:0;padding:0;min-width:0;min-height:0;z-index:2;touch-action:manipulation}.slide-audio:hover:not(:disabled){background:#ffffff18}.slide-audio[aria-pressed=true]{background:#e4572a}.slide-audio[aria-pressed=true] span{position:absolute;width:33.333%;height:33.333%;background:white;top:33.333%;left:33.333%;border-radius:2px}.slide-audio:focus-visible{outline:6px solid #8c361b;outline-offset:4px}.notice{position:fixed;left:50%;bottom:calc(var(--toolbar-height) + 20px);transform:translateX(-50%);padding:12px 20px;border-radius:8px;background:#15181df2;box-shadow:0 3px 20px #0004;max-width:90%;font-size:14px;z-index:20}
dialog{border:1px solid #474d58;border-radius:16px;background:#252931;color:var(--text);padding:28px;width:min(1160px,92vw);max-height:88dvh;box-shadow:0 24px 80px #0006}dialog::backdrop{background:#101217d9}#help{max-width:700px}.dialog-header{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}.dialog-header h1{font-size:24px;margin:0;line-height:1.5}.eyebrow{font-size:12px;color:var(--accent);margin:0 0 6px}.close-dialog{background:#383e48;border-radius:6px;padding:10px 14px;white-space:nowrap}.search-label{display:block;font-size:12px;color:var(--muted);margin-bottom:8px}#slide-search{width:100%;border:1px solid #4c5361;border-radius:8px;background:#191d24;padding:12px 14px;margin-bottom:24px}.slide-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px 16px}.slide-card{min-width:0;text-align:left;display:block;background:transparent;padding:5px;border:2px solid transparent;border-radius:10px}.slide-card[aria-current=page]{border-color:var(--accent);background:#36333a}.slide-card img{width:100%;aspect-ratio:16/9;object-fit:contain;background:#f8f4fa;border-radius:4px;display:block}.slide-card span{font-size:12px;line-height:1.7;margin-top:8px;display:block}.slide-card b{color:var(--accent);font-variant-numeric:tabular-nums;margin-right:8px}.shortcuts{display:grid;grid-template-columns:1fr 1fr;gap:20px 24px;font-size:14px}.shortcuts dt{line-height:2}.shortcuts dd{margin:0;align-self:center}kbd{font-family:inherit;font-size:12px;border:1px solid #575e6a;border-bottom-width:2px;padding:4px 6px;border-radius:4px;white-space:nowrap}#help p{font-size:13px;line-height:1.9;color:var(--muted)}
@media(max-width:1100px){.deck-label{display:none}.toolbar{padding:10px 16px;gap:12px}}@media(max-width:680px){:root{--toolbar-height:112px}.toolbar{min-height:var(--toolbar-height);flex-wrap:wrap;gap:6px;padding:8px 12px}.brand{flex:1}.brand-mark{font-size:18px}.page-controls{margin-left:auto}.tools{flex-basis:100%;justify-content:center}.icon-button,.tool-button{min-height:38px}.icon-button{min-width:38px}.slide{width:min(calc(100% - 16px),calc((100dvh - var(--toolbar-height) - 24px - env(safe-area-inset-bottom))*16/9))}.slide-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 6px}dialog{padding:18px}.dialog-header h1{font-size:20px}.shortcuts{grid-template-columns:1fr;gap:8px}.shortcuts dd{margin-bottom:14px}}
@media(max-height:500px) and (orientation:landscape){:root{--toolbar-height:54px}.toolbar{flex-wrap:nowrap;padding:6px 12px;min-height:54px}.tools{flex-basis:auto}.brand{display:none}.page-controls{margin-left:0}.slide{width:min(calc(100% - 16px),calc((100dvh - 70px - env(safe-area-inset-bottom))*16/9))}}

:root:fullscreen{--toolbar-height:0px}
:root:fullscreen #viewer{padding-bottom:0}
:root:fullscreen .toolbar,:root:fullscreen .progress-track{display:none}
:root:fullscreen .slide{width:min(100vw,calc(100dvh * 16/9));box-shadow:none}