:root{color-scheme:dark;font-family:Arial,Helvetica,sans-serif;background:#20292c;color:#f4f6f5}
*{box-sizing:border-box}
body{margin:0;min-height:100dvh;background:#20292c;display:flex;flex-direction:column}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,#book:focus-visible{outline:2px solid #47bab9;outline-offset:3px}
.topbar{height:54px;padding:0 clamp(12px,2vw,32px);display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid rgba(255,255,255,.14);position:sticky;top:0;z-index:20;background:#20292cf2;backdrop-filter:blur(8px)}
.brand{display:flex;align-items:center;gap:13px;font-size:12px;font-weight:700;letter-spacing:.11em;text-transform:uppercase;white-space:nowrap}
.brand-mark{display:block;width:auto;height:28px;object-fit:contain;flex:none}
.brand-rule{height:20px;width:1px;background:#6a7a7e}
.toplinks{display:flex;gap:22px;font-size:12px;font-weight:700;white-space:nowrap}
.toplinks a:hover{color:#47bab9}
main{flex:1;width:100%;padding:10px 10px 100px;display:flex;justify-content:center;align-items:flex-start}
.reader{width:100%;max-width:1920px}
.book-stage{width:100%;aspect-ratio:16/9;position:relative;overflow:hidden;background:#111a1d;box-shadow:0 26px 58px #0008}
.backward-turn{position:absolute;inset:0;z-index:5;width:100%;height:100%;pointer-events:none}
#book{width:100%;height:100%}
.book-page{background:#fff;overflow:hidden}
.book-page img{display:block;width:100%;height:100%;object-fit:cover;user-select:none}
.controls{position:fixed;bottom:14px;left:50%;transform:translateX(-50%);z-index:30;display:flex;align-items:center;justify-content:center;gap:10px;max-width:calc(100vw - 20px);padding:7px 9px;border:1px solid rgba(255,255,255,.23);border-radius:999px;background:#172326ee;box-shadow:0 10px 30px #0007;backdrop-filter:blur(12px)}
.controls button{display:flex;align-items:center;justify-content:center;gap:7px;white-space:nowrap;border:1px solid rgba(255,255,255,.18);border-radius:999px;background:rgba(255,255,255,.06);padding:8px 12px;font-size:12px;font-weight:700;transition:background .15s,border-color .15s}
.controls button:hover:not(:disabled){background:rgba(71,186,185,.19);border-color:#47bab9}
.controls button:disabled{opacity:.35;cursor:default}
.controls button span[aria-hidden]{font-size:18px;line-height:.7}
.position{display:flex;align-items:center;gap:11px;padding:0 5px;min-width:204px}
#page-status{font-size:12px;font-weight:800;letter-spacing:.07em;white-space:nowrap;min-width:50px}
#page-range{width:132px;accent-color:#47bab9;cursor:pointer}
.thumbnails{position:fixed;left:50%;bottom:77px;transform:translateX(-50%);z-index:25;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:11px;width:min(1200px,calc(100vw - 20px));max-height:min(70dvh,620px);overflow:auto;padding:12px;border:1px solid rgba(255,255,255,.22);border-radius:8px;background:#172326f7;box-shadow:0 16px 44px #0009}
.thumbnails[hidden]{display:none}
.thumbnails button{padding:5px;border:1px solid rgba(255,255,255,.19);background:rgba(255,255,255,.05);border-radius:3px;text-align:left}
.thumbnails button:hover,.thumbnails button[aria-current="page"]{border-color:#47bab9}
.thumbnails img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}
.thumbnails span{display:block;padding:6px 2px 2px;font-size:11px;color:#d2dcde}
#zoom-dialog{width:min(96vw,1800px);max-width:none;height:min(95vh,1100px);max-height:none;border:1px solid #657579;border-radius:8px;padding:0;background:#20292c;color:white;box-shadow:0 24px 60px #000a}
#zoom-dialog::backdrop{background:#071012dc}
.zoom-toolbar{height:50px;display:flex;align-items:center;justify-content:space-between;padding:0 19px;font-size:13px;font-weight:700}
.zoom-toolbar button{border:0;background:transparent;padding:7px}
.zoom-actions{display:flex;align-items:center;gap:9px}
.zoom-actions button:disabled{opacity:.35;cursor:default}
.zoom-scroll{height:calc(100% - 50px);overflow:auto;display:flex;align-items:flex-start;justify-content:center}
.zoom-scroll img{display:block;width:100%;height:auto;min-width:900px}
@media(max-width:740px){
 .topbar{height:50px}.brand{font-size:10px;gap:8px}.brand-mark{height:24px}.brand-rule{height:18px}
 .toplinks{gap:10px;font-size:11px}.toplinks a:first-child{display:none}
 main{padding:8px 7px 90px}
 .controls{gap:4px;bottom:10px;padding:5px}
 .controls button{padding:8px 9px;font-size:11px}.control-word{display:none}
 .position{min-width:0;padding:0 5px}#page-range{display:none}
 .thumbnails{grid-template-columns:repeat(3,minmax(0,1fr));bottom:65px;padding:8px}
 .zoom-scroll{justify-content:flex-start}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition-duration:0s!important}}