:root{
  --navy:#061a2b;--navy2:#08243a;--line:rgba(255,255,255,.12);--text:#f6f8fb;--muted:#9fb2c3;--yellow:#f8c632;--cyan:#3db6e6;
}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--navy);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,a{font:inherit}button{cursor:pointer}.app{min-height:100vh;background:radial-gradient(circle at 50% 35%,#103b59 0,#08243a 34%,#061a2b 72%)}
.topbar{height:74px;padding:0 22px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(3,18,31,.92);position:relative;z-index:20}.brand{display:flex;align-items:center;gap:11px}.brand-mark{width:40px;height:40px;border-radius:11px;background:linear-gradient(145deg,#ffd34a,#eaa900);display:grid;place-items:center;color:#071a2b;font-weight:900}.brand-copy{display:flex;flex-direction:column;line-height:1.12}.brand-copy strong{font-size:16px}.brand-copy span{font-size:12px;color:#a8bac9;margin-top:4px}.actions{display:flex;gap:9px}.icon-btn,.close-btn,.hd-head-btn{border:1px solid rgba(255,255,255,.15);background:rgba(255,255,255,.055);color:white}.icon-btn{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;text-decoration:none}.icon-btn svg{width:23px;height:23px;fill:white;stroke:white;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.icon-btn:hover{background:rgba(255,255,255,.1)}
.reader{position:relative;min-height:calc(100vh - 210px);display:grid;grid-template-columns:84px minmax(0,1fr) 84px;align-items:center;padding:28px 10px 18px;overflow:hidden}.reader-bg{position:absolute;inset:0;background:radial-gradient(circle at 50% 48%,rgba(44,141,193,.16),transparent 50%);pointer-events:none}.book-zone{position:relative;z-index:2;width:100%;height:min(72vh,760px);display:grid;place-items:center;outline:none}.book{width:100%;height:100%;}.fallback{height:100%;display:grid;place-items:center}.fallback img{max-height:100%;max-width:100%;object-fit:contain;box-shadow:0 18px 44px rgba(0,0,0,.38)}
.nav-arrow{position:relative;z-index:4;width:52px;height:72px;border-radius:16px;border:1px solid rgba(255,255,255,.12);background:rgba(5,20,34,.68);color:white;display:grid;place-items:center;margin:auto}.nav-arrow svg{width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:2.1;stroke-linecap:round;stroke-linejoin:round}.nav-arrow:disabled{opacity:.24;cursor:default}.nav-arrow:not(:disabled):hover{background:rgba(255,255,255,.09)}
.footer{padding:0 28px 24px;text-align:center}.page-status{display:flex;justify-content:center;align-items:center;gap:10px;font-size:15px}.page-status span{color:#9db1c1}.progress{max-width:650px;height:5px;border-radius:999px;background:rgba(255,255,255,.1);margin:14px auto 0;overflow:hidden}.progress span{height:100%;display:block;width:6.25%;background:linear-gradient(90deg,var(--cyan),var(--yellow));border-radius:inherit;transition:width .25s ease}.desktop-hint,.mobile-hint{font-size:12px;color:#87a0b3;margin:10px 0 0}.mobile-hint{display:none}.mobile-tools{display:none}
.drawer{position:fixed;right:0;top:0;bottom:0;width:min(420px,92vw);background:#f6f8fb;color:#152435;z-index:60;transform:translateX(102%);transition:transform .25s ease;box-shadow:-20px 0 50px rgba(0,0,0,.3);overflow:auto}.drawer.open{transform:none}.drawer-head{position:sticky;top:0;background:#fff;padding:18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e3e8ee;z-index:2}.drawer-head>div{display:flex;flex-direction:column}.drawer-head strong{font-size:18px}.drawer-head span{font-size:12px;color:#6c7d8a;margin-top:3px}.close-btn{width:42px;height:42px;border-radius:12px;background:#f0f3f6;color:#1d2a35;font-size:28px;border-color:#dfe5ea}.thumb-grid{padding:16px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.thumb-btn{padding:5px;border-radius:10px;border:2px solid transparent;background:#e8edf2;position:relative}.thumb-btn.active{border-color:#0a6eaa;background:#d8edf8}.thumb-btn img{width:100%;display:block;border-radius:6px}.thumb-btn span{position:absolute;right:8px;bottom:8px;background:rgba(5,18,30,.8);color:#fff;border-radius:7px;padding:3px 6px;font-size:10px}.backdrop{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:55}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#fff;color:#152435;padding:10px 16px;border-radius:999px;z-index:100;transition:.2s}.toast.show{opacity:1;transform:translate(-50%,0)}
.hd-reader{position:fixed;inset:0;z-index:100;background:#071826;color:#fff;overscroll-behavior:none}.hd-reader:not([hidden]){display:grid;grid-template-rows:62px minmax(0,1fr) 72px}.hd-head{display:grid;grid-template-columns:50px 1fr 50px;align-items:center;gap:6px;padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.12);background:#061725}.hd-head-btn{height:44px;border-radius:13px;font-size:26px}.hd-title{text-align:center;display:flex;flex-direction:column;min-width:0}.hd-title strong{font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.hd-title span{font-size:11px;color:#9fb2c3;margin-top:2px}.hd-viewport{position:relative;overflow:auto;overscroll-behavior:contain;background:#17212a;display:block;touch-action:pan-x pan-y;-webkit-overflow-scrolling:touch}.hd-image-wrap{min-width:100%;min-height:100%;display:flex;align-items:flex-start;justify-content:center;padding:12px}.hd-image-wrap img{display:block;width:100%;height:auto;max-width:none;box-shadow:0 6px 26px rgba(0,0,0,.38);user-select:none;-webkit-user-drag:none}.hd-loading{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);padding:10px 14px;border-radius:999px;background:rgba(4,18,30,.86);font-size:12px;color:#d8e3eb}.hd-tip{position:fixed;left:50%;bottom:84px;transform:translateX(-50%);z-index:103;background:rgba(3,17,28,.88);border:1px solid rgba(255,255,255,.1);font-size:11px;color:#d7e2ea;padding:8px 12px;border-radius:999px;white-space:nowrap;transition:opacity .3s}.hd-tip.hide{opacity:0;pointer-events:none}.hd-controls{display:grid;grid-template-columns:64px 1fr 64px;align-items:center;gap:12px;padding:10px 14px calc(10px + env(safe-area-inset-bottom));border-top:1px solid rgba(255,255,255,.12);background:#061725}.hd-nav{height:48px;border-radius:14px;border:1px solid rgba(255,255,255,.15);background:rgba(255,255,255,.06);color:#fff;font-size:28px}.hd-nav:disabled{opacity:.25}.zoom-controls{justify-self:center;display:grid;grid-template-columns:48px 72px 48px;gap:6px}.zoom-controls button{height:46px;border:1px solid rgba(255,255,255,.13);background:#102b40;color:#fff;border-radius:12px;font-size:20px}.zoom-controls #zoomValue{font-size:13px;font-weight:700}.reading-active{overflow:hidden}

@media(max-width:820px){
  .app{min-height:100svh}.topbar{height:64px;padding:0 14px}.brand-mark{display:none}.brand-copy strong{font-size:18px}.brand-copy span{display:none}.actions{gap:7px}.icon-btn{width:43px;height:43px;border-radius:13px}.desktop-only{display:none}.reader{min-height:auto;grid-template-columns:48px minmax(0,1fr) 48px;padding:18px 6px 8px}.book-zone{height:min(66svh,680px)}.nav-arrow{width:44px;height:62px;border-radius:15px}.nav-arrow svg{width:25px}.footer{padding:6px 18px 20px}.desktop-hint{display:none}.mobile-hint{display:block}.page-status{font-size:14px}.progress{margin-top:11px}.mobile-tools{display:block;padding:6px 14px 2px}.hd-open{width:100%;min-height:58px;border:1px solid rgba(255,255,255,.13);background:linear-gradient(135deg,rgba(61,182,230,.15),rgba(248,198,50,.1));color:#fff;border-radius:16px;padding:10px 14px;display:flex;align-items:center;gap:11px;text-align:left}.hd-icon{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:#fff;color:#092139;font-size:15px;font-weight:900}.hd-open>span:last-child{display:flex;flex-direction:column}.hd-open strong{font-size:14px}.hd-open small{font-size:11px;color:#a9bdcc;margin-top:2px}.thumb-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:430px){.reader{grid-template-columns:42px minmax(0,1fr) 42px}.nav-arrow{width:40px;height:58px}.book-zone{height:min(61svh,590px)}.thumb-grid{grid-template-columns:repeat(2,1fr)}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}


@media(max-width:820px) and (orientation:landscape){
  .topbar{height:54px;padding:0 12px}
  .reader{grid-template-columns:52px minmax(0,1fr) 52px;padding:8px 8px 4px}
  .book-zone{height:calc(100svh - 62px);max-height:none}
  .nav-arrow{height:56px;width:46px}
  .mobile-tools,.footer{display:none}
  .brand-copy strong{font-size:16px}
}