:root{color-scheme:dark;font-family:-apple-system,BlinkMacSystemFont,"Noto Sans TC",sans-serif;background:#1b2229;color:#ece7de}*{box-sizing:border-box}body{margin:0;min-height:100dvh;display:flex;flex-direction:column}header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 28px;border-bottom:1px solid #ffffff12;background:#1b2229}strong{font-size:19px;letter-spacing:1px}small{display:block;color:#aeb5ba;margin-top:5px;font-size:12px}.header-actions{display:flex;align-items:center;gap:10px}.preview-tag{font-size:11px;color:#b6b9b8;margin-right:8px}button,select,input{font:inherit;border:1px solid #ffffff25;background:#2a333c;color:#fff;border-radius:7px;padding:9px 13px}button{cursor:pointer}button:hover{background:#414d58}button:disabled{opacity:.3;cursor:default}button:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid #dabf81;outline-offset:3px}main{flex:1;min-height:0;background:radial-gradient(ellipse at 50% 40%,#52606a 0%,#35424c 45%,#242d35 85%)}#viewport{height:calc(100dvh - 242px);min-height:280px;overflow:auto;padding:30px 40px 42px;display:flex;align-items:flex-start;justify-content:flex-start}#book{--spine-width:14px;--edge-depth:7px;position:relative;display:flex;flex-shrink:0;margin:auto;isolation:isolate;z-index:0;touch-action:pan-y pinch-zoom;cursor:pointer}#book::before{content:"";position:absolute;top:5px;left:2px;right:-7px;bottom:calc(-1 * var(--edge-depth));background:repeating-linear-gradient(0deg,#d4ccbb 0px,#f5f0e7 1px,#c8bfae 2px,#f1ece0 3px);border:1px solid #ad9d82;border-bottom:3px solid #163b62;border-radius:1px 5px 4px 2px;box-shadow:3px 3px 5px #0006;z-index:-1}#book::after{content:"";position:absolute;inset:15% -2% -22px 1%;border-radius:8px;box-shadow:12px 23px 27px #0007,0 8px 8px #0005;z-index:-2;pointer-events:none}#book.closed-front::before,#book.closed-back::before{right:-9px;bottom:-10px;border-bottom-width:4px}#book.closed-front::after,#book.closed-back::after{box-shadow:13px 23px 29px #0008,0 9px 8px #0005}.page{position:relative;flex:1;min-width:0;background:#fff;overflow:hidden;z-index:1}.page img{display:block;width:100%;height:100%;object-fit:contain;user-select:none;-webkit-user-drag:none}.page.left:after,.page.right:after{content:"";position:absolute;top:0;bottom:0;width:24px;pointer-events:none}.page.left:after{right:0;background:linear-gradient(90deg,transparent,#00000020)}.page.right:after{left:0;background:linear-gradient(90deg,#00000025,transparent)}.closed-front .page,.closed-back .page{outline:1px solid #ffffff20;border-radius:1px 3px 2px 1px}.closed-front .page:after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,#0004 0,transparent 3%,#fff2 4%,transparent 6%)}.closed-back .page:after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(270deg,#0004,transparent 5%)}.binding{position:absolute;top:1px;bottom:-4px;left:calc(-1 * var(--spine-width));width:var(--spine-width);background:url('covers/spine.jpg') center/100% 100% no-repeat;box-shadow:inset -4px 0 5px #0008,inset 1px 0 1px #ffffff55;border-radius:3px 0 0 2px;z-index:2;pointer-events:none;transform:skewY(-5deg);transform-origin:right center}.closed-back .binding{left:auto;right:calc(-1 * var(--spine-width));box-shadow:inset 4px 0 5px #0008;transform:skewY(5deg);transform-origin:left center}.gutter{position:absolute;inset:0 auto 0 50%;width:3px;transform:translateX(-50%);background:linear-gradient(90deg,#0002,#0005,#fff1);z-index:2;pointer-events:none}.paper-animation{position:absolute;top:0;left:0;z-index:8;pointer-events:none;display:block}#book.turning{cursor:progress}#book.turning .binding{opacity:0}#notice{text-align:center;font-size:12px;line-height:1.6;min-height:20px;color:#c0c5c7;margin:0 16px 12px}footer{padding:12px 16px 8px;background:#1b2229;border-top:1px solid #ffffff15}.controls{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}#count{font-variant-numeric:tabular-nums;min-width:165px;text-align:center;color:#e2c791;font-size:13px}#play{background:#94743f;color:#fff;min-width:112px}label{font-size:13px;white-space:nowrap}select{padding:7px}input{width:70px;padding:7px}form{display:flex;gap:6px;align-items:center}footer p{text-align:center;font-size:11px;color:#9ca7ad;margin:4px}@media(max-width:700px){header{padding:12px 16px;align-items:flex-start}strong{font-size:16px}small{font-size:10px}.header-actions{gap:5px;flex-wrap:wrap;justify-content:flex-end}.preview-tag{display:none}.header-actions button{font-size:11px;padding:7px}#viewport{padding:22px 25px 34px;height:calc(100dvh - 310px)}.controls{gap:8px}button{padding:9px 10px}footer{padding:10px 8px}footer p{line-height:1.6}#notice{font-size:11px}#count{min-width:137px;font-size:12px}#book::before{right:-5px}#book::after{box-shadow:8px 16px 22px #0007}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}