:root{
  --ink:#2b1b14;--brown:#5b3c2d;--gold:#ae7945;--cream:#eee4d8;--paper:#fff;
  --muted:#75685f;--line:#d7c7b7;--bar:rgba(43,27,20,.96);--page-w:420px;--page-h:630px;
  --safe-top:env(safe-area-inset-top);--safe-bottom:env(safe-area-inset-bottom)
}
*{box-sizing:border-box}html,body{height:100%;margin:0}body{font-family:Arial,Helvetica,sans-serif;background:radial-gradient(circle at 50% 8%,#f9f4ee 0,#e8ddd0 52%,#d5c3b1 100%);color:var(--ink);overflow:hidden;-webkit-text-size-adjust:100%}
button,input{font:inherit}button{cursor:pointer;touch-action:manipulation}.hidden{display:none!important}
.app{height:100%;display:grid;grid-template-rows:auto 1fr auto;overflow:hidden}.topbar{height:64px;padding:calc(7px + var(--safe-top)) 14px 7px;display:flex;align-items:center;justify-content:space-between;background:rgba(255,253,249,.96);border-bottom:1px solid rgba(92,65,49,.18);box-shadow:0 4px 18px rgba(43,27,20,.08);z-index:20;backdrop-filter:blur(14px)}
.brand{border:0;background:transparent;color:var(--ink);display:flex;align-items:center;gap:10px;padding:4px;border-radius:12px;text-align:left}.brand:hover{background:#f1e8df}.brand-mark{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--ink);color:#fff;font-family:Georgia,serif;font-size:21px;font-weight:800}.brand-copy{display:flex;flex-direction:column}.brand-copy strong{font-family:Georgia,"Times New Roman",serif;font-size:17px}.brand-copy small{font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);font-weight:850;margin-top:2px}
.top-actions{display:flex;align-items:center;gap:6px}.icon-btn,.control-btn{border:0;border-radius:11px;display:grid;place-items:center;background:#eee5db;color:var(--ink);transition:.18s}.icon-btn{width:42px;height:42px}.icon-btn:hover,.control-btn:hover{background:#decdbd}.icon-btn:focus-visible,.control-btn:focus-visible,.page-display:focus-visible{outline:3px solid rgba(174,121,69,.38);outline-offset:2px}.icon-btn svg,.control-btn svg{width:22px;height:22px;fill:currentColor}.icon-btn.active{background:var(--gold);color:#fff}
.reader{min-height:0;position:relative;overflow:hidden}.reader-viewport{height:100%;width:100%;overflow:auto;overscroll-behavior:contain;display:flex;align-items:center;justify-content:center;padding:24px 82px;touch-action:pan-x pan-y;scrollbar-color:#9e8069 transparent}.book-stage{min-width:100%;min-height:100%;display:grid;place-items:center;position:relative}.book{display:flex;width:calc(var(--page-w) * 2);height:var(--page-h);filter:drop-shadow(0 22px 30px rgba(43,27,20,.28));transform-origin:center;perspective:1600px}.book.single{width:var(--page-w)}.book.turn-forward{animation:turnForward .3s ease}.book.turn-back{animation:turnBack .3s ease}
.page{width:var(--page-w);height:var(--page-h);background:#fff;overflow:hidden;position:relative}.page:first-child{border-radius:9px 0 0 9px}.page:last-child{border-radius:0 9px 9px 0}.book.single .page{border-radius:9px}.page img{display:block;width:100%;height:100%;object-fit:contain;background:#fff;user-select:none;-webkit-user-drag:none}.page-hotspot{position:absolute;z-index:3;display:block;border-radius:7px;cursor:pointer;background:rgba(174,121,69,0);transition:background .16s ease,box-shadow .16s ease}.page-hotspot:hover{background:rgba(174,121,69,.10);box-shadow:inset 0 0 0 2px rgba(174,121,69,.42)}.page-hotspot:focus-visible{outline:3px solid #ae7945;outline-offset:2px;background:rgba(174,121,69,.12)}.page::after{content:"";position:absolute;inset:0;pointer-events:none}.left-page::after{background:linear-gradient(90deg,transparent 74%,rgba(36,20,13,.14))}.right-page::after{background:linear-gradient(90deg,rgba(36,20,13,.11),transparent 26%)}.book.single .page::after{background:linear-gradient(90deg,rgba(36,20,13,.04),transparent 25%,transparent 75%,rgba(36,20,13,.04))}
.nav-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:8;width:54px;height:76px;border:0;border-radius:18px;background:rgba(43,27,20,.76);color:#fff;display:grid;place-items:center;backdrop-filter:blur(10px);box-shadow:0 9px 22px rgba(43,27,20,.2)}.nav-arrow:hover{background:rgba(43,27,20,.94)}.nav-arrow:disabled{opacity:.22;cursor:not-allowed}.nav-arrow svg{width:28px;height:28px;fill:currentColor}.nav-arrow.prev{left:18px}.nav-arrow.next{right:18px}
.controlbar{min-height:62px;padding:8px 14px calc(8px + var(--safe-bottom));display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;background:var(--bar);color:#fff;border-top:1px solid rgba(255,255,255,.08);z-index:20;backdrop-filter:blur(14px)}.control-left{justify-self:start}.control-center{justify-self:center;display:flex;align-items:center;gap:7px}.control-right{justify-self:end;display:flex;align-items:center;gap:7px}.control-btn{height:40px;min-width:40px;padding:0 10px;background:rgba(255,255,255,.12);color:#fff}.control-btn:hover{background:rgba(255,255,255,.22)}.control-btn:disabled{opacity:.28;cursor:not-allowed}.control-btn.wide{display:flex;grid-auto-flow:column;gap:7px}.control-btn.wide span{font-size:12px;font-weight:800}.page-display{border:0;background:transparent;color:#fff;font-weight:800;padding:10px 6px;border-radius:9px;white-space:nowrap}.page-input{width:82px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.12);color:#fff;padding:9px 7px;text-align:center;border-radius:9px;outline:0}.zoom-label{min-width:58px;font-size:12px;font-weight:850;text-align:center;color:#fff}
.loader,.fatal{position:fixed;inset:64px 0 62px;z-index:30;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 50% 8%,#f9f4ee 0,#e8ddd0 52%,#d5c3b1 100%)}.loader-card,.fatal-card{width:min(430px,100%);background:rgba(255,253,249,.96);border:1px solid var(--line);border-radius:20px;box-shadow:0 20px 55px rgba(43,27,20,.2);padding:30px;text-align:center}.spinner{width:48px;height:48px;border-radius:50%;border:5px solid #dfd1c3;border-top-color:var(--gold);margin:0 auto 18px;animation:spin .85s linear infinite}.loader strong,.fatal strong{display:block;font-family:Georgia,serif;font-size:24px;margin-bottom:7px}.loader p,.fatal p{margin:0;color:var(--muted);line-height:1.5}.fatal button{margin-top:18px;border:0;border-radius:12px;background:var(--ink);color:#fff;font-weight:850;padding:12px 18px}
.drawer{position:fixed;z-index:60;top:0;right:0;bottom:0;width:min(440px,94vw);display:grid;grid-template-rows:auto 1fr;background:#fffdf9;box-shadow:-20px 0 60px rgba(43,27,20,.32);transform:translateX(105%);transition:transform .28s ease}.drawer.open{transform:translateX(0)}.drawer-head{padding:20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.drawer-head strong{font-family:Georgia,serif;font-size:24px}.drawer-head small{display:block;margin-top:3px;color:var(--muted)}.drawer-body{overflow:auto;padding:16px 18px 30px}.close-btn{width:40px;height:40px;border:0;border-radius:50%;background:#eee5db;color:var(--ink);font-size:25px}.scrim{position:fixed;inset:0;z-index:50;background:rgba(43,27,20,.46);backdrop-filter:blur(2px)}.toc-section{margin:16px 5px 6px;color:var(--gold);font-size:11px;font-weight:900;letter-spacing:.1em;text-transform:uppercase}.toc-item{width:100%;border:1px solid var(--line);border-radius:12px;background:#fff;padding:11px 12px;margin-bottom:7px;display:grid;grid-template-columns:34px 1fr;align-items:center;gap:10px;text-align:left;color:var(--ink)}.toc-item:hover{border-color:#b99068;background:#fff9f2}.toc-item span{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:#eee5db;font-size:12px;font-weight:900}.toc-item strong{font-size:14px;line-height:1.35}.bookmark-list{padding:14px;border-radius:14px;background:#f2e9df;margin-bottom:12px}.bookmark-list h3{font-family:Georgia,serif;margin:0 0 10px}.bookmark-chip{border:0;border-radius:999px;background:var(--ink);color:#fff;padding:8px 11px;margin:3px;font-weight:800;font-size:12px}
.toast{position:fixed;z-index:80;left:50%;bottom:82px;transform:translate(-50%,16px);opacity:0;pointer-events:none;background:#fff;color:var(--ink);padding:11px 16px;border-radius:999px;box-shadow:0 12px 32px rgba(43,27,20,.28);font-size:13px;font-weight:800;transition:.22s}.toast.show{opacity:1;transform:translate(-50%,0)}
@keyframes spin{to{transform:rotate(360deg)}}@keyframes turnForward{0%{transform:perspective(1600px) rotateY(-2deg);opacity:.86}100%{transform:none;opacity:1}}@keyframes turnBack{0%{transform:perspective(1600px) rotateY(2deg);opacity:.86}100%{transform:none;opacity:1}}
@media(max-width:820px){
  .app{grid-template-rows:auto 1fr auto}.topbar{height:58px;padding:calc(5px + var(--safe-top)) 8px 5px}.brand-mark{width:35px;height:35px;font-size:18px}.brand-copy strong{font-size:14px}.brand-copy small{font-size:9px}.top-actions{gap:3px}.icon-btn{width:38px;height:38px}.icon-btn svg{width:20px;height:20px}
  .reader-viewport{padding:14px 9px 68px;align-items:flex-start}.book-stage{align-items:start}.book{width:var(--page-w)!important;height:var(--page-h);filter:drop-shadow(0 12px 20px rgba(43,27,20,.24))}.left-page{display:none!important}.page{border-radius:8px!important}.page::after{display:none}
  .nav-arrow{top:auto;bottom:12px;width:44px;height:44px;border-radius:50%;transform:none}.nav-arrow.prev{left:13px}.nav-arrow.next{right:13px}.nav-arrow svg{width:23px;height:23px}
  .controlbar{min-height:60px;padding:7px 8px calc(7px + var(--safe-bottom));grid-template-columns:auto 1fr auto}.control-left .wide span{display:none}.control-center{gap:3px}.control-right .wide span{display:none}.control-btn{height:38px;min-width:38px;padding:0 7px}.zoom-label{min-width:50px}.page-display{font-size:12px;padding:9px 3px}.toast{bottom:75px;max-width:88vw;text-align:center}
  .loader,.fatal{inset:58px 0 60px}
}
@media(max-width:430px){.brand-copy small{display:none}.top-actions{gap:1px}.icon-btn{width:36px;height:36px}.controlbar{gap:4px}.control-center .control-btn{min-width:35px}.zoom-label{min-width:43px;font-size:11px}.drawer{width:100vw}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}