:root{color-scheme:dark;--ink:#f5f7ed;--muted:#b6d7d9;--gold:#f1d595;--ocean:#082f3a}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}body{color:var(--ink);background:radial-gradient(ellipse at 50% 30%,#1c6874 0%,#0b414d 42%,#061f2b 100%);min-height:100svh;display:flex;flex-direction:column}button,a,select{-webkit-tap-highlight-color:transparent}button,select{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}.topbar{padding:22px 5vw;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid #f1d59524}.brand{display:flex;gap:16px;align-items:center}.brand-icon{font-family:Georgia,serif;font-size:26px;letter-spacing:-2px;color:var(--gold);white-space:nowrap}.brand-icon span{font-size:17px;padding:0 2px}.eyebrow{font-size:12px;letter-spacing:.22em;color:var(--gold);margin:0 0 4px}h1{font-size:clamp(17px,2vw,23px);font-weight:500;font-family:Georgia,serif;letter-spacing:.01em;margin:0}.download{display:flex;gap:9px;align-items:center;padding:11px 17px;color:var(--ink);border:1px solid #e7dcc066;border-radius:99px;text-decoration:none;font-size:14px;white-space:nowrap;transition:background .2s}.download:hover{background:#ffffff14}main{flex:1;padding:28px 18px 10px;display:flex;flex-direction:column;justify-content:center}.reader{display:flex;align-items:center;justify-content:center;gap:clamp(12px,4vw,60px)}.book-wrap{width:min(66vh,640px,calc(100vw - 150px));aspect-ratio:1;position:relative;perspective:1800px;filter:drop-shadow(0 20px 30px #00191db3)}.book-wrap:after{content:"";position:absolute;inset:4px -5px -5px 5px;background:repeating-linear-gradient(0deg,#d9d6c9,#d9d6c9 1px,#fffcf4 1px,#fffcf4 3px);border-radius:1px 5px 5px 1px;z-index:-1}.book{width:100%;height:100%;background:#fffcf4;border-radius:2px;position:relative;transform-style:preserve-3d;touch-action:pan-y}.book>img,.turn img{display:block;width:100%;height:100%;object-fit:contain;border-radius:2px}.book:after{pointer-events:none;position:absolute;content:"";inset:0;background:linear-gradient(90deg,#00000018,transparent 3%,transparent 98%,#ffffff33);z-index:3}.turn{position:absolute;inset:0;transform-origin:left center;backface-visibility:hidden;visibility:hidden;z-index:2;background:#fffcf4;box-shadow:0 0 14px #00000018}.turn.forward{visibility:visible;animation:forward .65s cubic-bezier(.22,.65,.25,1) both}.turn.backward{visibility:visible;animation:backward .65s cubic-bezier(.22,.65,.25,1) both}.side{flex-shrink:0;width:48px;height:48px;border:1px solid #b6d7d957;border-radius:50%;background:#ffffff08;color:var(--ink);display:grid;place-items:center;transition:background .2s,opacity .2s}.side span{font-family:Georgia,serif;font-size:38px;line-height:1;margin-top:-5px}.side:hover:not(:disabled){background:#ffffff18}.side:disabled{opacity:.25;cursor:default}.controls{display:flex;align-items:center;justify-content:center;gap:24px;margin-top:25px;font-size:14px}.quiet{background:none;border:0;color:var(--muted);padding:9px 2px;font-size:14px}.quiet:hover{color:white}.page-picker{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}select{color:var(--ink);background:#153f4a;border:1px solid #81aaa965;border-radius:7px;padding:7px 8px;font-size:14px}.hint{text-align:center;color:var(--muted);font-size:13px;margin:10px 0 0}footer{padding:15px 20px;text-align:center;font-family:Georgia,serif;color:#a8c9cbb0;font-size:13px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}#image-error{position:absolute;inset:20%;padding:20px;line-height:1.5;color:#173c47;background:#fffcf4}button:focus-visible,a:focus-visible,select:focus-visible,.book:focus-visible{outline:3px solid var(--gold);outline-offset:4px}@keyframes forward{from{transform:rotateY(0deg);filter:brightness(1)}to{transform:rotateY(-95deg);filter:brightness(.68)}}@keyframes backward{from{transform:rotateY(-95deg);filter:brightness(.68)}to{transform:rotateY(0deg);filter:brightness(1)}}@media(max-width:600px){.topbar{padding:18px 18px;gap:12px}.brand{gap:10px}.brand-icon{display:none}.eyebrow{font-size:12px}.download{padding:10px 12px;font-size:13px;gap:7px}.download svg{width:15px}h1{font-size:18px;max-width:170px}.reader{gap:8px}.side{width:34px;height:42px;border:0;background:transparent}.side span{font-size:40px}.book-wrap{width:calc(100vw - 105px);max-width:640px}main{padding:26px 8px 10px}.controls{gap:18px}.hint{font-size:12px}.quiet{font-size:14px}}@media(max-width:370px){h1{font-size:16px}.download{padding:9px;font-size:12px}.download svg{display:none}.controls{gap:12px}.book-wrap{width:calc(100vw - 90px)}}@media(prefers-reduced-motion:reduce){.turn.forward,.turn.backward{animation:none}.download,.side{transition:none}}@media(orientation:landscape) and (max-height:600px){.topbar{padding:10px 4vw}main{padding:14px}.book-wrap{width:min(65vh,640px)}.controls{margin-top:12px}.hint,footer{display:none}}