/* Đọc sách cùng VDK — © 2026 Vương Đồng Khánh */
:root{
  --bg:#120b07;--ink-ui:#f6e6c6;--muted:#c9ae86;--dim:#9b8466;
  --brass:#d6a557;--brass-hi:#f7d891;--brass-lo:#8a5a24;
  --wood:#2a1a10;--wood-2:#3a2516;--line:#c9995a55;
  --panel:linear-gradient(165deg,#2e1d12f7,#1c120bf9);
  --font:'Palatino Linotype','Book Antiqua',Palatino,'Iowan Old Style',Georgia,serif;
  --fs:20px;--lh:1.6;
  --paper:#f4e6c8;--paper-2:#ead6ae;--paper-ink:#3b2a1b;--paper-mute:#7a5c3e;--paper-edge:#c9a46c;
  --hl-bg:rgba(241,196,94,.42);--hl-ring:rgba(241,196,94,.4);
  --safe-t:env(safe-area-inset-top,0px);--safe-b:env(safe-area-inset-bottom,0px);--safe-l:env(safe-area-inset-left,0px);--safe-r:env(safe-area-inset-right,0px);
  --top-h:64px;--ui:'Segoe UI',-apple-system,BlinkMacSystemFont,Roboto,'Helvetica Neue',Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink-ui);font:14px/1.45 var(--ui);overflow:hidden;-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
button:disabled{opacity:.45;cursor:not-allowed}
a{color:var(--brass-hi)}
:focus-visible{outline:2px solid var(--brass-hi);outline-offset:2px}
[hidden]{display:none!important}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.ic{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ic .fill,.ic path.fill,.ic circle.fill,.ic rect.fill{fill:currentColor;stroke:none}
use .fill{fill:currentColor}
svg .fill{fill:currentColor;stroke:none}

/* ---------- splash ---------- */
.splash{position:fixed;inset:0;z-index:300;display:grid;place-items:center;background:radial-gradient(ellipse at 50% 40%,#3a2414,#120b07 70%);transition:opacity .6s ease}
.splash.out{opacity:0;pointer-events:none}
.splash-in{text-align:center}
.splash-logo{width:132px;height:132px;display:block;margin:0 auto 14px}
.sl-ring{stroke-dasharray:340;stroke-dashoffset:340;animation:slRing 1.1s ease-out forwards}
.sl-pl,.sl-pr{transform-origin:60px 88px;transform:scaleX(0);animation:slPage .7s .45s cubic-bezier(.2,.9,.3,1.2) forwards}
.sl-moon{opacity:0;animation:fadeIn .6s .7s forwards}
.sl-star{transform-origin:60px 34px;transform:scale(0);animation:slStar .6s .95s cubic-bezier(.2,1.6,.4,1) forwards}
.splash-title{font:600 26px/1.1 var(--font);letter-spacing:.06em;color:#ffe7b3;opacity:0;animation:fadeUp .7s .9s forwards}
.splash-sub{margin-top:6px;font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:var(--muted);opacity:0;animation:fadeUp .7s 1.1s forwards}
@keyframes slRing{to{stroke-dashoffset:0}}
@keyframes slPage{to{transform:scaleX(1)}}
@keyframes slStar{to{transform:scale(1)}}
@keyframes fadeIn{to{opacity:1}}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- app shell ---------- */
.app{position:fixed;inset:0;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:calc(var(--top-h) + var(--safe-t)) minmax(0,1fr) auto auto;overflow:hidden}
.scene{position:fixed;inset:0;z-index:0;overflow:hidden;background:#2a1a10;contain:strict}
.topbar{position:relative;z-index:30;display:flex;align-items:center;gap:12px;padding:var(--safe-t) calc(14px + var(--safe-r)) 0 calc(14px + var(--safe-l));background:linear-gradient(180deg,#1d120bf2,#1d120bc4 70%,#1d120b00);}
.brand{display:flex;align-items:center;gap:10px;min-width:0;flex:none;text-align:left}
.logo{width:42px;height:42px;flex:none;filter:drop-shadow(0 2px 6px #0008)}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text b{font:700 17px/1.1 var(--font);letter-spacing:.04em;color:#ffe6b0;white-space:nowrap}
.brand-text small{font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);white-space:nowrap;margin-top:3px}
.lg-star{transform-origin:60px 34px}.lg-ring{transform-origin:60px 60px}.lg-book{transform-origin:60px 88px}
.brand.play .lg-star,.brand:hover .lg-star{animation:twinkle 1.6s ease-in-out 2}
.brand.play .lg-ring,.brand:hover .lg-ring{animation:spinOnce 2.4s cubic-bezier(.4,0,.2,1)}
.brand.play .lg-book,.brand:hover .lg-book{animation:bookBreath 1.2s ease-in-out 2}
@keyframes twinkle{0%,100%{transform:scale(1);opacity:1}45%{transform:scale(1.45) rotate(25deg);opacity:.7}70%{transform:scale(.9)}}
@keyframes spinOnce{to{transform:rotate(360deg)}}
@keyframes bookBreath{0%,100%{transform:scaleX(1)}50%{transform:scaleX(.9)}}
.tools{display:flex;align-items:center;gap:7px;margin-left:auto;min-width:0}
.pill{display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 14px;border-radius:999px;border:1px solid #d3a2604d;background:linear-gradient(180deg,#3a2616e6,#24170de6);color:var(--ink-ui);font-size:13px;white-space:nowrap;box-shadow:inset 0 1px #ffe6b014,0 2px 8px #0005;transition:background .18s,border-color .18s,transform .18s}
.pill:hover{border-color:#efc27c;background:linear-gradient(180deg,#4a301b,#2c1b10)}
.pill:active{transform:translateY(1px)}
.pill[aria-pressed=true],.pill.on{background:linear-gradient(180deg,#f2cf86,#b9843f);color:#2a1a0c;border-color:#ffe2a6}
.pill.icon{width:40px;padding:0;justify-content:center}
.pill .caret{width:14px;height:14px;opacity:.7}
.dd{position:relative}
.menu{position:absolute;top:46px;left:0;min-width:238px;padding:6px;border-radius:14px;background:var(--panel);border:1px solid #d3a2606b;box-shadow:0 18px 40px #000a;display:none;z-index:50}
.menu.open{display:block;animation:popIn .16s ease-out}
.menu button{display:flex;align-items:center;gap:10px;width:100%;padding:9px 12px;border-radius:9px;text-align:left;font-size:13.5px}
.menu button:hover,.menu button:focus-visible{background:#d6a5572b}
.menu hr{border:0;border-top:1px solid var(--line);margin:5px 4px}
@keyframes popIn{from{opacity:0;transform:translateY(-4px) scale(.98)}to{opacity:1;transform:none}}

/* ---------- stage & book ---------- */
.stage{position:relative;z-index:5;display:flex;align-items:center;justify-content:center;min-height:0;padding:6px 12px}
.book-wrap{position:relative;flex:none;transition:transform .7s cubic-bezier(.3,.8,.2,1),opacity .5s}
.book{position:absolute;inset:0}
.book-cover{position:absolute;inset:-13px -15px -17px;border-radius:12px 12px 14px 14px;background:
  radial-gradient(ellipse at 50% 0%,#ffffff12,transparent 60%),
  repeating-linear-gradient(35deg,#ffffff05 0 2px,transparent 2px 7px),
  linear-gradient(180deg,#6b2f1c,#4a1d11 55%,#36140b);
  box-shadow:0 0 0 1px #2a0e06,inset 0 0 0 3px #8a4a2a55,inset 0 0 0 6px #2a0e06aa,inset 0 0 0 7px #d2a05a40,0 26px 50px #000c,0 8px 16px #0009}
.book-cover:before{content:"";position:absolute;left:6px;right:6px;bottom:-2px;height:12px;border-radius:0 0 10px 10px;background:repeating-linear-gradient(180deg,#f8ecd0 0 1px,#c9a46c 1px 2px,#ead3a4 2px 3px);box-shadow:0 2px 0 #36140b}
.book-cover:after{content:"";position:absolute;inset:10px 8px 14px;border-radius:6px;background:repeating-linear-gradient(90deg,#f8ecd0 0 1px,#c9a46c 1px 2px,#ead3a4 2px 3px);opacity:.9}
.pages{position:absolute;inset:0;display:flex;perspective:2600px;touch-action:none;user-select:none;-webkit-user-select:none}
.page{position:relative;flex:1 1 0;min-width:0;height:100%;overflow:hidden;color:var(--paper-ink);background:
  url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .45 0 0 0 0 .32 0 0 0 0 .18 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E"),
  radial-gradient(ellipse at 50% 40%,var(--paper),var(--paper-2) 120%);}
.page.left{border-radius:6px 2px 2px 6px;box-shadow:inset -34px 0 40px -26px #4a2c1477,inset 8px 0 14px -8px #4a2c1455}
.page.right{border-radius:2px 6px 6px 2px;box-shadow:inset 34px 0 40px -26px #4a2c1488,inset -8px 0 14px -8px #4a2c1455}
.page:before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,#fff7e01a,transparent 18%,transparent 85%,#6a45200f)}
.page.left:after,.page.right:after{content:"";position:absolute;width:86px;height:86px;pointer-events:none;opacity:.22;background:url(../assets/art/corner.svg) center/contain no-repeat}
.page.left:after{left:6px;bottom:6px}
.page.right:after{right:6px;top:6px;transform:rotate(180deg)}
.gutter{position:absolute;top:0;bottom:0;left:50%;width:44px;margin-left:-22px;pointer-events:none;z-index:3;background:linear-gradient(90deg,transparent,#3d22101c 30%,#2a160a66 48%,#2a160a66 52%,#3d22101c 70%,transparent)}
.book.single .page.right,.book.single .gutter{display:none}
.book.single .page.left{border-radius:6px}
.book.single .page.left:after{display:none}
.page-light{position:absolute;inset:0;pointer-events:none;z-index:4;opacity:.55;background:linear-gradient(118deg,#fff6d81f 0%,transparent 38%),linear-gradient(118deg,transparent 52%,#5a38180d 53%,transparent 57%,transparent 70%,#5a38180a 71%,transparent 74%)}
.page-dim{position:absolute;inset:0;pointer-events:none;z-index:4;background:#000;opacity:0}
.ph{position:absolute;left:0;right:0;top:0;height:var(--ph,40px);display:flex;align-items:flex-end;justify-content:center;padding:0 18% 6px;font:small-caps 600 12px/1.2 var(--font);letter-spacing:.14em;color:var(--paper-mute);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ph span{overflow:hidden;text-overflow:ellipsis}
.pf{position:absolute;left:0;right:0;bottom:0;height:var(--pfh,36px);display:flex;align-items:center;justify-content:center;gap:10px;font:13px/1 var(--font);color:var(--paper-mute);letter-spacing:.12em}
.pf:before,.pf:after{content:"";width:34px;height:10px;background:url(../assets/art/divider.svg) center/contain no-repeat;opacity:.5}
.pb{position:absolute;left:var(--mx,40px);right:var(--mx,40px);top:var(--pt,48px);bottom:var(--pbm,44px);font-family:var(--font);font-size:var(--fs);color:var(--paper-ink);overflow:hidden}
.ln{position:relative;display:block;overflow:hidden;white-space:normal;word-break:normal;text-align:left;border-radius:3px;cursor:pointer;font-kerning:normal}
.ln.j{text-align:justify;text-align-last:justify}
.ln.i1{padding-left:1.5em}
.ln.k-h1{font-weight:700;text-align:center;letter-spacing:.02em;font-size:1.55em;color:var(--h-ink,#5a3418)}
.ln.k-h2s{font-style:italic;text-align:center;font-size:1.22em;color:var(--paper-mute)}
.ln.k-h2{font-size:1.28em}
.ln.k-h3{font-size:1.08em}
.ln.k-h2{font-weight:700;text-align:center}
.ln.k-h3{font-weight:700;font-style:italic}
.ln.k-q{font-style:italic;padding-left:1.2em;color:var(--paper-mute)}
.ln.k-li{padding-left:1.2em}
.ln.k-ph{font-style:italic;font-size:.85em;color:var(--paper-mute);text-align:center}
.ln.k-gap,.ln.k-fig,.ln.k-sep{cursor:default}
.ln.k-sep{display:flex;align-items:center;justify-content:center}
.ln.k-sep:before{content:"";width:60%;max-width:200px;height:24px;background:url(../assets/art/divider.svg) center/contain no-repeat;opacity:.7}
.ln.k-fig{display:flex;align-items:center;justify-content:center;flex-direction:column}
.ln.k-fig img{max-width:100%;max-height:100%;object-fit:contain;opacity:.85}
.paper-night .ln.k-fig img,.paper-night .page:after{filter:invert(.82) sepia(.4)}
.ln.k-fig figcaption{font-style:italic;font-size:.75em;color:var(--paper-mute)}
.dc{float:left;font-weight:700;color:var(--h-ink,#7a3b1c);font-size:calc(var(--fs) * 2.75);line-height:1;margin:.04em .08em 0 -.02em;text-shadow:1px 1px 0 #e2c08a}
.ln.dcl{overflow:visible}
.ln.active{background:linear-gradient(90deg,transparent,var(--hl-bg) 8%,var(--hl-bg) 92%,transparent);box-shadow:0 0 0 1px var(--hl-ring)}
.no-hl .ln.active{background:none;box-shadow:none}
.dim-others.reading .pb .ln:not(.active):not(.k-fig){opacity:.38}
.ln.found{background:#ffd76a66}
.visual{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;overflow:hidden}
.visual canvas,.visual img{max-width:100%;max-height:100%;display:block;box-shadow:0 2px 10px #4a2c1440}
.visual-tools{position:absolute;left:50%;bottom:6px;transform:translateX(-50%);display:flex;gap:6px;z-index:6}
.vt{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 12px;border-radius:999px;background:#2a1a10e6;color:#ffe6b0;border:1px solid #d6a5577a;font-size:12px;white-space:nowrap}
.vt:hover{background:#4a2e19}
.empty-note{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center;padding:20px;font:italic 16px var(--font);color:var(--paper-mute)}

/* page flip leaf */
.leaf{position:absolute;top:0;bottom:0;z-index:8;transform-style:preserve-3d;pointer-events:none}
.leaf .face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;overflow:hidden}
.leaf .face.back{transform:rotateY(180deg)}
.leaf .face>.page{position:absolute;inset:0;width:100%}
.leaf .shade{position:absolute;inset:0;pointer-events:none;z-index:9}
.leaf .face.front .shade{background:linear-gradient(90deg,#00000000 40%,#3a2210 100%);opacity:var(--sf,0)}
.leaf .face.back .shade{background:linear-gradient(270deg,#00000000 40%,#3a2210 100%);opacity:var(--sb,0)}
.leaf .face.front .sheen{position:absolute;inset:0;z-index:9;background:linear-gradient(90deg,transparent calc(var(--sx,100%) - 18%),#fff8e04d var(--sx,100%),transparent calc(var(--sx,100%) + 6%))}
.under-shadow{position:absolute;top:0;bottom:0;z-index:7;pointer-events:none;background:linear-gradient(90deg,#2a160a66,transparent);opacity:0}
.book.flat-flip .pages{animation:fadeFlip .22s ease-out}
@keyframes fadeFlip{from{opacity:.35}to{opacity:1}}

/* opening cover */
.open-cover{position:absolute;top:-13px;bottom:-17px;right:-15px;width:calc(50% + 15px);transform-origin:left center;transform-style:preserve-3d;z-index:12;pointer-events:none;display:none}
.book.single .open-cover{left:-15px;width:auto}
.open-cover.run{display:block;animation:coverOpen 1.15s .15s cubic-bezier(.45,.05,.2,1) forwards}
.oc-face{position:absolute;inset:0;border-radius:4px 12px 14px 4px;backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:radial-gradient(ellipse at 50% 30%,#ffffff12,transparent 60%),linear-gradient(160deg,#6b2f1c,#3a150b);box-shadow:inset 0 0 0 8px #2a0e0688,inset 0 0 0 10px #d2a05a66,inset 0 0 0 24px #00000022,inset 0 0 0 26px #d2a05a44}
.oc-face img{width:34%;max-width:150px;filter:drop-shadow(0 3px 8px #0008)}
.oc-face span{font:600 clamp(14px,2.2vw,24px) var(--font);letter-spacing:.1em;color:#f0cf8a;text-shadow:0 1px 0 #2a0e06}
@keyframes coverOpen{0%{transform:perspective(2400px) rotateY(0)}100%{transform:perspective(2400px) rotateY(-178deg);opacity:.0}}

/* line popover */
.line-pop{position:absolute;z-index:16;display:flex;gap:4px;padding:5px;border-radius:12px;background:var(--panel);border:1px solid #d6a5577a;box-shadow:0 10px 26px #000a;animation:popIn .14s ease-out}
.line-pop button{display:flex;align-items:center;gap:6px;padding:7px 10px;border-radius:8px;font-size:12.5px;white-space:nowrap}
.line-pop button:hover{background:#d6a5572b}
.drop-hint{position:absolute;inset:0;z-index:20;display:none;align-items:center;justify-content:center;gap:12px;border:3px dashed #f2cf86;border-radius:18px;background:#1a0f08c9;font:22px var(--font);color:#ffe6b0}
.drop-hint .ic{width:34px;height:34px}
.dragging .drop-hint{display:flex}

/* lens */
.lens{position:absolute;left:0;top:0;width:var(--ls,220px);height:var(--ls,220px);z-index:15;touch-action:none;cursor:grab}
.lens.grab{cursor:grabbing}
.lens-glass{position:absolute;inset:0;border-radius:50%;overflow:hidden;background:var(--paper);box-shadow:0 0 0 5px #b8853f,0 0 0 7px #f3d38c,0 0 0 11px #7a4a1c,0 0 0 12px #2a160a,0 16px 30px #000a,inset 0 0 22px #4a2c1466}
.lens-glass:after{content:"";position:absolute;inset:0;border-radius:50%;pointer-events:none;background:radial-gradient(circle at 30% 26%,#ffffff70,#ffffff10 22%,transparent 40%),radial-gradient(circle at 70% 78%,transparent 50%,#3a22101f 72%);}
.lens-content{position:absolute;left:0;top:0;transform-origin:0 0;pointer-events:none}
.lens-canvas{position:absolute;inset:0;width:100%;height:100%;display:none}
.lens.visual .lens-canvas{display:block}.lens.visual .lens-content{display:none}
.lens-handle{position:absolute;left:50%;top:50%;width:26px;height:calc(var(--ls,220px) * .55);transform-origin:50% 0;transform:translateX(-50%) rotate(-45deg) translateY(calc(var(--ls,220px) / 2 + 9px));border-radius:6px 6px 14px 14px;pointer-events:none;background:linear-gradient(180deg,#f3d38c 0,#b8853f 12%,#7a4a1c 18%,#3a2010 19%,#5a341a 50%,#2a1608 100%);box-shadow:inset 3px 0 4px #ffffff22,inset -4px 0 6px #0006,0 8px 14px #0008}
.lens.glide,.lens.glide .lens-content{transition-property:transform;transition-timing-function:linear}

/* ---------- bottom bar ---------- */
.bottombar{position:relative;z-index:30;display:flex;align-items:center;gap:10px;margin:0 auto calc(4px + var(--safe-b));width:min(1240px,calc(100% - 20px));padding:8px 12px;border-radius:22px;background:linear-gradient(110deg,#2a1a10f2,#3d2616f2 55%,#2a1a10f2);border:1px solid #d6a5576b;box-shadow:0 12px 30px #0009,inset 0 1px #ffe6b01a}
.bb-group{display:flex;align-items:center;gap:6px}
.bb-nav{gap:4px}
.bb-auto{margin-left:auto;gap:6px}
.rb{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:40px;height:40px;padding:0 10px;border-radius:999px;border:1px solid #d6a55766;background:#24160ddd;color:#ffe6b0;transition:background .15s,border-color .15s}
.rb:hover{background:#4a2e19;border-color:#f2cf86}
.rb.major{width:46px;height:46px;padding:0;background:linear-gradient(180deg,#f7d891,#b9843f);color:#2a1a0c;border-color:#ffe2a6;box-shadow:0 0 0 3px #d6a55722}
.rb.major .ic{width:20px;height:20px}
.rb.on{background:linear-gradient(180deg,#f2cf86,#b9843f);color:#2a1a0c}
.rb-l{font-size:12.5px}
.pagecount{min-width:92px;height:40px;padding:0 8px;font:600 16px var(--font);color:#ffe9be;border-radius:10px;font-variant-numeric:tabular-nums}
.pagecount:hover{background:#ffffff0d}
.bb-progress{flex:1;display:flex;align-items:center;gap:10px;min-width:80px}
.bb-progress input{flex:1}
.bb-progress span{font-size:12px;color:var(--muted);min-width:38px;text-align:right;font-variant-numeric:tabular-nums}
.chip-toggle{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 10px 0 12px;border-radius:999px;border:1px solid #d6a55766;background:#24160ddd;font-size:12.5px;white-space:nowrap}
.chip-toggle .sw{position:relative;width:34px;height:20px;border-radius:999px;background:#5a4330;transition:background .2s}
.chip-toggle .sw:after{content:"";position:absolute;left:2px;top:2px;width:16px;height:16px;border-radius:50%;background:#f4e3c3;transition:transform .2s}
.chip-toggle[aria-pressed=true] .sw{background:#5fae6a}
.chip-toggle[aria-pressed=true] .sw:after{transform:translateX(14px)}
.speed{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.speed input{width:96px}
.speed b{color:#ffe6b0;min-width:34px;font-weight:600;font-variant-numeric:tabular-nums}
.status{position:fixed;left:50%;bottom:calc(84px + var(--safe-b));transform:translateX(-50%);z-index:25;font-size:12px;color:#f4dcae;text-shadow:0 1px 3px #000;pointer-events:none;white-space:nowrap;background:#1d120bd9;border:1px solid #d6a55755;border-radius:999px;padding:4px 12px;max-width:94vw;overflow:hidden;text-overflow:ellipsis;opacity:0;transition:opacity .3s}
.status.show{opacity:.95}
.legal{position:relative;z-index:30;text-align:center;font-size:10.5px;color:#b99c74;padding:0 10px calc(4px + var(--safe-b));white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.legal a{color:#e9c78a}

/* range inputs */
input[type=range]{-webkit-appearance:none;appearance:none;height:22px;background:transparent;cursor:pointer;min-width:0}
input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:4px;background:linear-gradient(90deg,#e8b866 var(--p,50%),#5a4330 var(--p,50%))}
input[type=range]::-moz-range-track{height:4px;border-radius:4px;background:#5a4330}
input[type=range]::-moz-range-progress{height:4px;border-radius:4px;background:#e8b866}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;margin-top:-6px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#fff3cf,#e0a955 60%,#9a6424);box-shadow:0 1px 4px #000a}
input[type=range]::-moz-range-thumb{width:16px;height:16px;border:0;border-radius:50%;background:#e0a955}
.warm-range::-webkit-slider-runnable-track{background:linear-gradient(90deg,#ffb35a,#ffe1a0 50%,#f3f0ff)}

/* ---------- panels ---------- */
.panel{position:fixed;z-index:60;top:calc(var(--top-h) + var(--safe-t) + 6px);right:calc(12px + var(--safe-r));width:330px;max-height:calc(100dvh - var(--top-h) - var(--safe-t) - 110px);display:flex;flex-direction:column;border-radius:18px;background:var(--panel);border:1px solid #d6a5577a;box-shadow:0 22px 50px #000b,inset 0 1px #ffe6b01a;animation:panelIn .22s cubic-bezier(.2,.9,.3,1)}
.panel.mini{width:300px}
@keyframes panelIn{from{opacity:0;transform:translateY(-8px) scale(.98)}to{opacity:1;transform:none}}
.panel-h{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 8px}
.panel-h h2{margin:0;font:600 19px var(--font);color:#ffe3ad}
.x{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;color:var(--muted)}
.x:hover{background:#ffffff12;color:#fff}
.panel-b{padding:4px 16px 16px;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin}
.row{margin:10px 0 14px}
.row>label,.row .lab{display:flex;align-items:center;gap:8px;font-size:13px;color:#e9d2a8;margin-bottom:7px}
.row>label b,.row label b{margin-left:auto;color:var(--brass-hi);font-weight:600;font-variant-numeric:tabular-nums}
.row input[type=range]{width:100%}
.row.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.row.two label{display:flex;gap:6px;font-size:12.5px;color:#e9d2a8}
select,input[type=number],input[type=search],input[type=text],input:not([type]),textarea{background:#140c07;border:1px solid #8a6a4a88;border-radius:10px;color:#f6e6c6;padding:8px 10px;min-height:38px;width:100%}
select{appearance:auto}
.scale{display:flex;justify-content:space-between;font-size:10.5px;color:var(--dim);margin-top:2px}
.stepper{display:flex;align-items:center;gap:8px}
.stepper button{width:36px;height:32px;border-radius:9px;border:1px solid #d6a55755;background:#24160d;font:600 13px var(--font);flex:none}
.stepper input{flex:1}
.swatches{display:flex;gap:10px;flex-wrap:wrap}
.swatches button{width:34px;height:34px;border-radius:50%;background:var(--c);box-shadow:inset 0 0 0 1px #0004,0 0 0 2px #4a3524;transition:box-shadow .15s,transform .15s}
.swatches.small button{width:28px;height:28px}
.swatches button.on{box-shadow:inset 0 0 0 1px #0004,0 0 0 2px #1d120b,0 0 0 4px var(--brass-hi);transform:scale(1.06)}
.swatches .sw-off{background:linear-gradient(135deg,#3a2a1e 45%,#d65a4a 46% 54%,#3a2a1e 55%)}
.seg{display:flex;padding:3px;border-radius:12px;background:#140c07;border:1px solid #8a6a4a55;gap:3px}
.seg button{flex:1;display:flex;align-items:center;justify-content:center;gap:5px;padding:7px 4px;border-radius:9px;font-size:12px;color:#d8bf98;white-space:nowrap}
.seg button.on{background:linear-gradient(180deg,#f2cf86,#b9843f);color:#2a1a0c;font-weight:600}
.seg .ic{width:15px;height:15px}
.scenes{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}
.scenes button{display:flex;flex-direction:column;align-items:center;gap:5px;font-size:11px;color:#d8bf98;padding:4px 2px;border-radius:10px}
.scenes button.on{color:#ffe3ad;background:#d6a55722}
.th{display:block;width:100%;aspect-ratio:1.15;border-radius:9px;border:2px solid #4a3524;background-size:cover}
.scenes button.on .th{border-color:var(--brass-hi)}
.th-day{background:radial-gradient(circle at 70% 28%,#fffbe0 0 8%,transparent 9%),linear-gradient(180deg,#7ab8ea,#cfe8f5 55%,#8fbf6a 56%,#5f9448)}
.th-dusk{background:radial-gradient(circle at 40% 58%,#ffe3a0 0 9%,transparent 10%),linear-gradient(180deg,#2f3d7a,#c96d7a 45%,#f6b060 57%,#6a4a3a 58%,#3a2a24)}
.th-night{background:radial-gradient(circle at 70% 26%,#f6efd2 0 7%,transparent 8%),radial-gradient(circle at 25% 30%,#fff 0 1%,transparent 1.5%),radial-gradient(circle at 45% 18%,#fff 0 1%,transparent 1.5%),linear-gradient(180deg,#070d22,#22305e 56%,#1c2a2a 57%,#101818)}
.th-auto{background:conic-gradient(from 200deg,#7ab8ea,#f6b060,#22305e,#7ab8ea)}
.toggles{display:grid;gap:4px}
.tg{display:flex;align-items:center;gap:10px;padding:6px 2px;font-size:13px;color:#e9d2a8;cursor:pointer}
.tg input{appearance:none;-webkit-appearance:none;position:relative;width:36px;height:21px;border-radius:999px;background:#5a4330;flex:none;cursor:pointer;transition:background .2s;margin:0}
.tg input:after{content:"";position:absolute;left:2.5px;top:2.5px;width:16px;height:16px;border-radius:50%;background:#f4e3c3;transition:transform .2s}
.tg input:checked{background:#5fae6a}
.tg input:checked:after{transform:translateX(15px)}
.hint{font-size:12px;color:#b89b74;line-height:1.55;margin:6px 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:0 14px;border-radius:11px;border:1px solid #d6a55766;background:#2a1a10;color:#f6e6c6;font-size:13px;white-space:nowrap}
.btn:hover{background:#4a2e19}
.btn.primary{background:linear-gradient(180deg,#f7d891,#b9843f);border-color:#ffe2a6;color:#2a1a0c;font-weight:600}
.btn.danger{border-color:#d0645a99;color:#ffb3a8}
.btn.wide{width:100%;margin-top:6px}
.transport{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}
.transport .btn{flex:1}
.transport.left .btn{flex:none}
.sub{display:flex;align-items:center;gap:8px;margin:16px 0 4px;font:600 14px var(--ui);color:#ffd894;letter-spacing:.02em}
.modes{display:grid;gap:6px;margin-bottom:6px}
.modes button{display:grid;grid-template-columns:22px 1fr;column-gap:10px;align-items:center;text-align:left;padding:9px 11px;border-radius:12px;border:1px solid #8a6a4a44;background:#140c0799}
.modes button .ic{grid-row:span 2;width:20px;height:20px;color:var(--brass)}
.modes button b{font-size:13px;font-weight:600}
.modes button small{font-size:11.5px;color:var(--dim)}
.modes button.on{border-color:var(--brass-hi);background:#d6a5572b}
.modes button.on .ic{color:var(--brass-hi)}
.combo{display:flex;gap:8px}
.combo input{flex:1;min-width:0}
.combo select{flex:1.4;min-width:0}
.amb{display:grid;gap:6px}
.amb-row{display:grid;grid-template-columns:auto 1fr 1.3fr;align-items:center;gap:10px;padding:6px 8px;border-radius:11px;background:#140c0788}
.amb-row button{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;border:1px solid #d6a55755;color:#d8bf98}
.amb-row button.on{background:linear-gradient(180deg,#f2cf86,#b9843f);color:#2a1a0c}
.amb-row span{font-size:13px}
.grid-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.grid-tools>*{display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 4px;border-radius:14px;background:#140c0799;border:1px solid #8a6a4a44;font-size:12px;text-align:center;color:#f0dcb6;text-decoration:none}
.grid-tools .ic{width:22px;height:22px;color:var(--brass-hi)}

/* drawers */
.drawer{position:fixed;z-index:70;top:0;bottom:0;width:min(380px,92vw);display:flex;flex-direction:column;background:var(--panel);border-right:1px solid #d6a5577a;box-shadow:20px 0 50px #000b;padding-top:var(--safe-t);padding-bottom:var(--safe-b);animation:drawerIn .26s cubic-bezier(.2,.9,.3,1)}
.drawer.left{left:0}
@keyframes drawerIn{from{transform:translateX(-30px);opacity:0}to{transform:none;opacity:1}}
.scrim{position:fixed;inset:0;z-index:55;background:#0a0603a6;animation:fadeIn .2s}
.scrim.soft{background:#0a060326}
.lib-actions{display:flex;gap:8px;margin:4px 0 10px}
.lib-actions .btn{flex:1}
.searchbox{position:relative;margin-bottom:10px}
.searchbox .ic{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--dim)}
.searchbox input{padding-left:34px}
.lib-list{display:grid;gap:7px}
.lib-item{display:grid;grid-template-columns:44px 1fr auto;gap:11px;align-items:center;padding:8px;border-radius:13px;border:1px solid #8a6a4a33;background:#140c0777;text-align:left;cursor:pointer}
.lib-item:hover{border-color:#d6a55788}
.lib-item.cur{border-color:var(--brass-hi);background:#d6a5571f}
.cover{position:relative;width:44px;height:58px;border-radius:3px 6px 6px 3px;background:linear-gradient(110deg,hsl(var(--h) 45% 20%),hsl(var(--h) 50% 34%) 45%,hsl(var(--h) 45% 24%));box-shadow:inset 4px 0 0 #0005,inset 0 0 0 1px #ffffff14,0 3px 6px #0008;display:grid;place-items:center;font:700 18px var(--font);color:#f2cf86;overflow:hidden}
.cover:after{content:"";position:absolute;inset:5px 5px 5px 8px;border:1px solid #f2cf8655;border-radius:2px}
.lib-meta{min-width:0}
.lib-meta b{display:block;font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lib-meta small{display:block;font-size:11.5px;color:var(--dim);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lib-meta .pbar{height:3px;border-radius:3px;background:#5a4330;margin-top:6px;overflow:hidden}
.lib-meta .pbar i{display:block;height:100%;background:var(--brass)}
.lib-ops{display:flex;gap:2px}
.lib-ops button{display:grid;place-items:center;width:32px;height:32px;border-radius:8px;color:var(--muted)}
.lib-ops button:hover{background:#ffffff12;color:#fff}
.tabs{display:flex;gap:4px;padding:3px;border-radius:12px;background:#140c07;margin:4px 0 12px}
.tabs button{flex:1;padding:8px;border-radius:9px;font-size:12.5px;color:#d8bf98}
.tabs button.on{background:#d6a55733;color:#ffe3ad;font-weight:600}
.tabp{display:none}.tabp.on{display:block}
.toc-list{display:grid;gap:2px}
.toc-list button{display:flex;align-items:baseline;gap:8px;width:100%;padding:9px 10px;border-radius:9px;text-align:left;font-size:13.5px}
.toc-list button:hover{background:#d6a5571f}
.toc-list button.cur{color:var(--brass-hi);background:#d6a55714}
.toc-list button.l2{padding-left:24px;font-size:13px}
.toc-list button.l3{padding-left:38px;font-size:12.5px;color:#d8bf98}
.toc-list button span{flex:1;min-width:0}
.toc-list button small{color:var(--dim);font-size:11px;flex:none}
.toc-list .snip{display:block;color:#cdb38c;font-size:12px}
.toc-list mark{background:#f2cf8655;color:inherit;border-radius:2px}
.toc-empty{padding:12px;color:var(--dim);font-size:13px}

/* modals */
.modal{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:16px;background:#0a0603b8;animation:fadeIn .18s}
.mbox{width:min(680px,100%);max-height:calc(100dvh - 32px);overflow:auto;border-radius:18px;padding:20px;background:var(--panel);border:1px solid #d6a5578a;box-shadow:0 30px 80px #000d;animation:panelIn .22s}
.mbox.small{width:min(440px,100%)}
.mbox.wide{width:min(760px,100%);padding-top:6px}
.mbox.wide .panel-h{padding:10px 0 6px}
.mbox h2{margin:0 0 6px;font:600 22px var(--font);color:#ffe3ad}
.fl{display:block;font-size:12.5px;color:#e9d2a8;margin:12px 0 6px}
.mbox textarea{min-height:min(46dvh,340px);resize:vertical;line-height:1.6;font-size:15px}
.m-act{display:flex;align-items:center;justify-content:flex-end;gap:8px;margin-top:16px;flex-wrap:wrap}
.m-act .hint{margin-right:auto}
.bar{height:8px;border-radius:8px;background:#5a4330;overflow:hidden;margin-top:10px}
.bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#b9843f,#f7d891);transition:width .25s}
.keys{display:grid;gap:6px;margin:10px 0 14px}
.key-row{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:center;padding:7px 10px;border-radius:10px;background:#140c0788;font-size:13px}
.key-row kbd{min-width:72px;text-align:center;padding:5px 9px;border-radius:7px;background:#2a1a10;border:1px solid #d6a55766;font:12px var(--ui);color:#ffe3ad}
.key-row.wait kbd{border-color:#7fd08a;color:#bff0c4}
.prose h3{font:600 15px var(--ui);color:#ffd894;margin:16px 0 4px}
.prose p{font-size:13px;line-height:1.65;color:#e2cba4;margin:4px 0}
.toast{position:fixed;z-index:400;left:50%;bottom:calc(96px + var(--safe-b));transform:translate(-50%,12px);max-width:min(560px,92vw);padding:11px 16px;border-radius:12px;background:#24160dfa;border:1px solid #d6a557aa;color:#ffecc8;font-size:13.5px;text-align:center;box-shadow:0 12px 30px #000b;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- zoom overlay ---------- */
.zoom{position:fixed;inset:0;z-index:150;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr) auto auto;color:#2e1d0f;background:radial-gradient(ellipse at 50% 0%,#fbf0d6,#efdcb4 65%,#e1c592);}
.zoom.night-paper{background:radial-gradient(ellipse at 50% 0%,#2f2922,#1e1a15 70%);color:#ecdcbf}
.z-top,.z-bottom{display:flex;align-items:center;gap:10px;padding:8px calc(12px + var(--safe-r)) 8px calc(12px + var(--safe-l));background:linear-gradient(180deg,#2c1b10f5,#3c2617f5);color:#ffe6b0;z-index:3}
.z-top{padding-top:calc(8px + var(--safe-t));border-bottom:1px solid #d6a557aa}
.z-bottom{padding-bottom:calc(8px + var(--safe-b));border-top:1px solid #d6a557aa;justify-content:center;flex-wrap:wrap}
.z-title{min-width:0;flex:1}
.z-title small{display:block;font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.z-title b{display:block;font:600 16px var(--font);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.z-tools{display:flex;align-items:center;gap:6px;flex:none}
.z-tools input[type=range]{width:150px}
.zb{display:inline-grid;place-items:center;min-width:38px;height:38px;padding:0 8px;border-radius:10px;border:1px solid #d6a55766;background:#24160d;color:#ffe6b0}
.zb.txt{font:600 13px var(--ui);min-width:58px;font-variant-numeric:tabular-nums}
.zb[aria-pressed=true]{background:linear-gradient(180deg,#f2cf86,#b9843f);color:#2a1a0c}
.zb.close{background:#5a2a1a}
.z-view{position:relative;overflow:auto;overscroll-behavior:contain;touch-action:pan-x pan-y;cursor:grab;scrollbar-width:thin;outline:none}
.z-view.grab{cursor:grabbing}
.z-view.scrolling{overflow:hidden}
.z-content{font-family:var(--font);font-size:var(--zfs,60px);line-height:1.38;padding:42vh max(10vw,40px);width:max-content;min-width:100%}
.z-view.wrap .z-content{width:auto}
.zl{display:block;white-space:nowrap;padding:0 .12em;border-radius:.12em;opacity:.55;transition:opacity .25s}
.zl.k-h1,.zl.k-h2{font-weight:700}
.zl.k-gap{height:.5em}
.zl.active{opacity:1;background:var(--hl-bg);box-shadow:0 0 0 .06em var(--hl-ring)}
.no-hl .zl.active{background:none;box-shadow:none}
.z-view.wrap .zp{margin:0 0 .45em;max-width:100%}
.z-view.wrap .zl{display:inline;white-space:normal;padding:0;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.z-view.wrap .zp.k-h1,.z-view.wrap .zp.k-h2{font-weight:700}
.z-visual{display:block;max-width:none;box-shadow:0 10px 40px #4a2c1466}
.z-pan{display:flex;align-items:center;gap:8px;padding:6px 14px;background:#3c2617f0;z-index:3}
.z-pan input{flex:1}
.z-pos{font:13px var(--font);min-width:130px;text-align:center;font-variant-numeric:tabular-nums}
.z-speed{display:flex;align-items:center;gap:6px;font-size:12px}
.z-speed input{width:70px;min-height:34px;text-align:center}
.dpad{opacity:.9;position:fixed;z-index:160;right:calc(14px + var(--safe-r));bottom:calc(84px + var(--safe-b));display:grid;grid-template-columns:repeat(3,60px);grid-template-rows:repeat(3,60px);gap:6px}
.dpad[data-pos=left]{right:auto;left:calc(14px + var(--safe-l))}
.dpad[data-pos=center]{right:auto;left:50%;transform:translateX(-50%)}
.dp{display:grid;place-items:center;border-radius:16px;border:1px solid #d6a557aa;background:linear-gradient(180deg,#5a3a22f0,#2a1a10f0);color:#ffe6b0;box-shadow:0 4px 0 #1a0f08,0 8px 18px #0006}
.dp:active{transform:translateY(3px);box-shadow:0 1px 0 #1a0f08}
.dp .ic{width:26px;height:26px}
.dp.up{grid-column:2;grid-row:1}.dp.left{grid-column:1;grid-row:2}.dp.mid{grid-column:2;grid-row:2;border-radius:50%;background:linear-gradient(180deg,#f7d891,#b9843f);color:#2a1a0c}.dp.right{grid-column:3;grid-row:2}.dp.down{grid-column:2;grid-row:3}
.dp-opt{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#2a1a10e0;color:#ffe6b0;border:1px solid #d6a55766}
.dp-opt.pos{grid-column:1;grid-row:1;align-self:start;justify-self:start}
.dp-opt.fold{grid-column:3;grid-row:1;align-self:start;justify-self:end}
.dpad.folded{grid-template-columns:60px;grid-template-rows:60px}
.dpad.folded .dp,.dpad.folded .dp-opt.pos{display:none}
.dpad.folded .dp-opt.fold{grid-column:1;grid-row:1;width:56px;height:56px;justify-self:center;align-self:center;transform:rotate(180deg)}
.zoom.ui-hidden .z-top,.zoom.ui-hidden .z-bottom,.zoom.ui-hidden .z-pan,.zoom.ui-hidden .dpad{display:none}
.zoom.ui-hidden{grid-template-rows:0 minmax(0,1fr) 0 0}
.z-showui{position:fixed;right:12px;top:calc(10px + var(--safe-t));z-index:170;display:flex;align-items:center;gap:6px;padding:8px 12px;border-radius:999px;background:#2a1a10b0;color:#ffe6b0;font-size:12px;opacity:.55}
.z-showui:hover{opacity:1}

/* ---------- scene ---------- */
.world{position:absolute;left:0;top:0;transform-origin:0 0}
.world img,.world .lay{position:absolute;display:block;user-select:none;-webkit-user-drag:none;pointer-events:none}
.parallax{transition:transform 1.2s cubic-bezier(.2,.7,.2,1);will-change:transform}
.drift{transform-origin:52% 46%;animation:drift 48s ease-in-out infinite alternate;will-change:transform}
@keyframes drift{0%{transform:scale(1) translate(0,0)}50%{transform:scale(1.025) translate(-.4%,.3%)}100%{transform:scale(1.045) translate(.5%,-.4%)}}
.mode-layer{opacity:0;transition:opacity 1.6s ease}
.mode-layer.on{opacity:1}
.lay.win{border-radius:50%;overflow:hidden;clip-path:circle(50%)}
.win .cl{position:absolute;left:0;top:var(--y);width:150px;height:46px;border-radius:50%;opacity:.38;animation:cloud var(--d) linear infinite;animation-delay:var(--dl);will-change:transform}
@keyframes cloud{from{transform:translateX(-170px)}to{transform:translateX(var(--w))}}
.win .bd{position:absolute;left:0;top:0;width:var(--w);height:100%;animation:birdFly2 26s linear infinite;animation-delay:-4s;will-change:transform}
.win .bd svg{position:absolute;left:0;top:44%;width:34px;height:15px;transform-origin:50% 60%;animation:flap .45s ease-in-out infinite alternate;will-change:transform}
@keyframes birdFly2{0%{transform:translate(-60px,10px)}50%{transform:translate(120px,-14px)}100%{transform:translate(300px,-30px)}}
@keyframes flap{from{transform:scaleY(1)}to{transform:scaleY(.35)}}
.win .st{position:absolute;width:3px;height:3px;border-radius:50%;background:#fff;box-shadow:0 0 6px 1px #fff9;animation:twinkleStar var(--t) ease-in-out infinite alternate;animation-delay:var(--dl)}
@keyframes twinkleStar{from{opacity:.15}to{opacity:1}}
.win .ff,.motes .fly{position:absolute;width:4px;height:4px;border-radius:50%;background:#e8ff9a;box-shadow:0 0 8px 3px #c8ff6a99;opacity:0;animation:firefly var(--t) ease-in-out infinite;animation-delay:var(--dl);will-change:transform,opacity}
@keyframes firefly{0%{transform:translate(0,0);opacity:0}25%{opacity:.95}50%{transform:translate(var(--dx),-14px);opacity:.3}75%{opacity:.9}100%{transform:translate(calc(var(--dx)*-.6),8px);opacity:0}}
.glare{border-radius:50%;background:radial-gradient(circle,#fff6d0 0,#ffe39a88 25%,#ffcf7a00 70%);mix-blend-mode:normal;animation:glare 7s ease-in-out infinite alternate;will-change:opacity,transform}
@keyframes glare{from{opacity:.55;transform:scale(.92)}to{opacity:1;transform:scale(1.08)}}
.beam{width:840px;height:520px;transform-origin:50% 0;transform:rotate(14deg) skewX(-8deg);background:linear-gradient(180deg,var(--bc),transparent 75%);clip-path:polygon(40% 0,60% 0,100% 100%,0 100%);opacity:.0;animation:beam2 18s ease-in-out infinite alternate;will-change:opacity}
@keyframes beam2{0%{opacity:.18}50%{opacity:.42}100%{opacity:.26}}
.glow{border-radius:50%;will-change:opacity}
.fireglow{background:radial-gradient(circle,#ffb24ccc 0,#ff8a3a55 30%,#ff7a2a00 68%);animation:fireFlick 1.9s ease-in-out infinite alternate}
.wallglow{background:radial-gradient(ellipse,#ffae5a33 0,#ff9a4a14 45%,transparent 70%);animation:fireFlick 3.7s ease-in-out infinite alternate-reverse}
@keyframes fireFlick{0%{opacity:.55}22%{opacity:.85}45%{opacity:.62}68%{opacity:.95}100%{opacity:.7}}
.lamp{background:radial-gradient(circle,#ffd98acc 0,#ffbf5a44 32%,#ffb04a00 68%);animation:lampFlick 2s ease-in-out infinite alternate}
@keyframes lampFlick{0%{opacity:.45;transform:scale(.96)}40%{opacity:.8;transform:scale(1.03)}70%{opacity:.6;transform:scale(.99)}100%{opacity:.9;transform:scale(1.04)}}
.ember{width:3px;height:3px;border-radius:50%;background:#ffcf6a;box-shadow:0 0 6px 2px #ff9a3a;opacity:0;animation:ember var(--t) ease-out infinite;animation-delay:var(--dl);will-change:transform,opacity}
@keyframes ember{0%{transform:translate(0,0);opacity:0}15%{opacity:1}100%{transform:translate(var(--dx),-120px);opacity:0}}
.steam{width:80px;height:120px}
.steam i{position:absolute;bottom:0;left:var(--x);width:22px;height:90px;border-radius:50%;background:radial-gradient(ellipse at 50% 60%,#ffffff70 0,#ffffff26 40%,transparent 70%);opacity:0;animation:steam 5s ease-in infinite;animation-delay:var(--dl);will-change:transform,opacity}
@keyframes steam{0%{transform:translateY(20px) scale(.6,.5);opacity:0}25%{opacity:.6}100%{transform:translateY(-70px) scale(1.4,1.2) skewX(14deg);opacity:0}}
.motes i{position:absolute;width:var(--r);height:var(--r);border-radius:50%;background:#fff0c0;box-shadow:0 0 6px 1px #ffd27a88;opacity:0;animation:mote var(--t) ease-in-out infinite;animation-delay:var(--dl);will-change:transform,opacity}
@keyframes mote{0%{transform:translate(0,0);opacity:0}20%{opacity:.8}50%{transform:translate(var(--dx),var(--dy));opacity:.55}80%{opacity:.75}100%{transform:translate(calc(var(--dx)*1.6),calc(var(--dy)*1.9));opacity:0}}
.vignette{position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse at 50% 44%,transparent 52%,#0b0603a0 100%)}
.scene .shade-mid{position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,#00000040,transparent 16%,transparent 74%,#00000059)}

/* fx levels / eco */
.fx-lite .scene .drift,.fx-lite .scene .bd,.fx-lite .scene .bd svg,.fx-lite .scene .steam i,.fx-lite .scene .st,.fx-lite .scene .cl{animation:none}
.fx-lite .scene .motes i:nth-child(n+5),.fx-lite .scene .ember:nth-of-type(n+3){display:none}
.fx-off .scene *,.eco .scene *,.scene-paused .scene *{animation-play-state:paused!important}
.fx-off .scene .motes,.fx-off .scene .steam,.fx-off .scene .bd,.fx-off .scene .ember,.eco .scene .motes,.eco .scene .steam,.eco .scene .bd,.eco .scene .ember{display:none}
.fx-off .lg-star,.fx-off .lg-ring,.fx-off .lg-book,.eco .lg-star,.eco .lg-ring,.eco .lg-book{animation:none!important}
@media (prefers-reduced-motion:reduce){
  .scene *,.lg-star,.lg-ring,.lg-book{animation:none!important}
  .scene .motes,.scene .steam,.scene .bd,.scene .ember{display:none}
  .panel,.drawer,.menu.open,.mbox,.line-pop{animation:none}
}

/* admire mode */
.admire .book-wrap{transform:translateY(64vh) scale(.42);opacity:.0;pointer-events:none}
.admire .bottombar,.admire .legal,.admire .tools{opacity:0;pointer-events:none}
.admire .bottombar,.admire .legal,.admire .tools{transition:opacity .4s}
.admire-tip{position:fixed;left:50%;bottom:calc(26px + var(--safe-b));transform:translateX(-50%);z-index:40;padding:10px 18px;border-radius:999px;background:#24160de6;border:1px solid #d6a5578a;color:#ffe6b0;font-size:13px;display:none}
.admire-on .admire-tip{display:flex;gap:8px;align-items:center}

/* ---------- responsive ---------- */
.show-sm{display:none!important}
@media (max-width:1360px){.hide-md{display:none!important}}
@media (max-width:1180px){.tools .pill .lbl{display:none}.tools .pill{width:40px;padding:0;justify-content:center}.tools .pill .caret{display:none}#btnCustom .lbl,#btnOpen .lbl{display:inline}#btnCustom,#btnOpen{width:auto;padding:0 13px}}
@media (max-width:760px){
  :root{--top-h:56px}
  .hide-sm{display:none!important}
  .show-sm{display:inline-flex!important}
  .brand-text small{display:none}
  .brand-text b{font-size:15px}
  .logo{width:36px;height:36px}
  .tools{gap:6px}
  #btnCustom .lbl{display:none}#btnCustom{width:40px;padding:0}
  #btnOpen{padding:0 12px}
  .stage{padding:4px 8px}
  .bottombar{gap:6px;padding:6px 8px;border-radius:18px;width:calc(100% - 12px)}
  .bb-group{gap:4px}
  .rb{min-width:38px;height:38px;padding:0 8px}
  .rb.major{width:44px;height:44px}
  .pagecount{min-width:70px;font-size:14px;padding:0 4px}
  .panel,.panel.mini,.panel.sheet{top:auto;left:0;right:0;bottom:0;width:auto;max-height:64dvh;border-radius:20px 20px 0 0;padding-bottom:var(--safe-b);animation:sheetIn .26s cubic-bezier(.2,.9,.3,1)}
  @keyframes sheetIn{from{transform:translateY(40px);opacity:0}to{transform:none;opacity:1}}
  .drawer{width:100%;border-right:0}
  .status{bottom:calc(74px + var(--safe-b))}
  .z-tools input[type=range]{width:90px}
  .z-top{flex-wrap:wrap}
  .z-title{flex-basis:100%}
  .z-tools{width:100%;justify-content:space-between}
  .zb{min-width:36px;height:36px}
  .z-pos{min-width:0;flex-basis:100%;order:-1}
  .dpad{grid-template-columns:repeat(3,56px);grid-template-rows:repeat(3,56px);bottom:calc(128px + var(--safe-b))}
  .line-pop button{padding:7px 8px;font-size:12px}
  .line-pop button .ic{display:none}
  .legal{font-size:9.5px}
}
@media (max-width:400px){
  .hide-xs{display:none!important}
  .brand-text{display:none}
  .pagecount{min-width:64px}
}
@media (max-height:560px) and (orientation:landscape){
  :root{--top-h:50px}
  .legal{display:none}
  .bottombar{padding:4px 8px}
}

/* =================== 3.1 layout (toolbar, side panel, bottom bar, magnifier zoom) =================== */
:root{--top-h:76px;--glass:linear-gradient(180deg,#2a1a10d9,#1a100ae0);--glass-b:#d6a5575c}
.topbar{background:none;padding:calc(12px + var(--safe-t)) calc(18px + var(--safe-r)) 0 calc(18px + var(--safe-l));align-items:flex-start}
.topbar:before{content:"";position:absolute;inset:0 0 -30px;pointer-events:none;background:linear-gradient(180deg,#0d07048c,#0d070400);z-index:-1}
.tools{margin-left:0;width:100%;gap:10px}
.tools-gap{flex:1}
.pill{height:52px;padding:0 18px;border-radius:18px;gap:10px;font-size:15px;font-weight:500;background:var(--glass);border:1px solid var(--glass-b);box-shadow:0 6px 18px #0007,inset 0 1px #ffe6b01f}
.pill .ic{width:22px;height:22px}
.pill:hover{background:linear-gradient(180deg,#3d2616e6,#22150ce6)}
.pill.on,.pill[aria-pressed=true]{background:linear-gradient(180deg,#3d2616f0,#22150cf0);border-color:#f2cf86;box-shadow:0 0 0 2px #f2cf8640,0 6px 18px #0007;color:#ffe9be}
.pill.icon{width:52px;padding:0}
.pill.group{padding:0 10px 0 6px;gap:10px}
.playsq{display:grid;place-items:center;width:42px;height:40px;border-radius:12px;background:linear-gradient(180deg,#fbe2a2,#d9a659);color:#2a1a0c;box-shadow:inset 0 1px #fff6,0 2px 6px #0006}
.playsq .ic{width:20px;height:20px}
.playsq[aria-pressed=true]{background:linear-gradient(180deg,#9fe0a0,#4f9a5a)}
.pill.group select{width:auto;min-height:36px;height:36px;padding:0 26px 0 12px;border-radius:10px;background:#140c07cc;border:1px solid #d6a55755;font-size:14px}
.pill .unit{color:#e9d2a8}
.menu{top:60px;min-width:250px;background:linear-gradient(180deg,#2c1b10f5,#1c120bf7);padding:8px}
.menu button{font-size:15px;padding:11px 14px}
.menu button .ic{width:20px;height:20px}
/* side customize panel (docked on wide screens) */
.panel.side{top:calc(var(--top-h) + var(--safe-t) + 14px);right:calc(14px + var(--safe-r));width:250px;max-height:calc(100dvh - var(--top-h) - var(--safe-t) - 140px);border-radius:16px;background:linear-gradient(180deg,#24160ded,#170e08f0)}
.panel.side .panel-b{padding:14px 16px 14px}
.panel.side .row{margin:4px 0 14px}
.panel.side .row>label,.panel.side .row .lab{font-size:14.5px;color:#f1dcb4;margin-bottom:8px}
.panel.side select{min-height:40px;background:#1a100acc;border-color:#d6a55755}
.panel .tt{font:700 16px/1 Georgia,serif;letter-spacing:-1px;color:#f1dcb4;margin-right:2px}.panel .tt small{font-size:12px}
.iconrange{display:flex;align-items:center;gap:10px}.iconrange .ic{color:#e9d2a8}.iconrange input{flex:1}
.sunic{color:#ffd25a!important}
.panel.side .stepper button{width:auto;min-width:30px;padding:0 4px;height:30px;border:0;background:none;font:600 16px var(--ui);color:#f1dcb4}
.panel.side .swatches{gap:9px}.panel.side .swatches button{width:30px;height:30px}
.seg.icons{background:none;border:0;padding:0;gap:8px;justify-content:flex-start}
.seg.icons button{flex:0 0 46px;height:40px;border-radius:10px;border:1px solid #d6a55744;background:#1a100acc;color:#e9d2a8}
.seg.icons button .ic{width:20px;height:20px}
.seg.icons button.on{background:#3a2414;border-color:#f2cf86;color:#ffe3ad;box-shadow:0 0 0 1px #f2cf8655}
.panel.side .scenes{gap:6px}
.panel.side .scenes button{font-size:10.5px;padding:2px 0}
.th{aspect-ratio:1;border-radius:9px;background-size:cover!important;background-position:center!important}
.th-auto{background:url(../assets/scene/room-night.webp) 18% 60%}
.th-day{background:url(../assets/scene/room-day.webp) 50% 40%}
.th-dusk{background:url(../assets/scene/room-dusk.webp) 50% 40%}
.th-night{background:url(../assets/scene/room-night.webp) 50% 38%}
.btn.ghost{background:none;border-color:transparent;justify-content:flex-start;font-size:14.5px;padding-left:2px;color:#f1dcb4}
.btn.ghost .ic{width:20px;height:20px}
.sm-only{display:none}
.app.side-open .stage{padding-right:calc(272px + var(--safe-r))}
.tabs.scroll{overflow-x:auto;scrollbar-width:none}
.tabs.scroll button{flex:0 0 auto;padding:8px 12px}
.ai-box{display:grid;grid-template-columns:auto 1fr auto auto;gap:10px;align-items:center;padding:10px 12px;margin:8px 0 6px;border-radius:12px;background:#d6a5571a;border:1px solid #d6a5574d}
.ai-box>.ic{width:22px;height:22px;color:var(--brass-hi)}
.ai-box b{display:block;font-size:13.5px}.ai-box small{display:block;font-size:11.5px;color:var(--muted)}
.ai-box .btn{min-height:34px;padding:0 12px}
/* bottom bar like the reference: one long glass bar */
.bottombar{width:calc(100% - 28px);max-width:none;margin:0 auto calc(10px + var(--safe-b));padding:10px 14px;border-radius:20px;background:linear-gradient(180deg,#24160de6,#160d07ee);gap:12px}
.rb{min-width:52px;height:52px;border-radius:14px;background:#1a100acc;border-color:#d6a55755}
.rb .ic{width:22px;height:22px}
.rb.flat{background:none;border-color:transparent;min-width:44px}
.rb.flat .ic{width:26px;height:26px}
.rb.wide{padding:0 16px;gap:8px}
.rb-l{font-size:14.5px}
.bb-sep{width:1px;height:34px;background:#d6a55740;margin:0 4px}
.pagecount{min-width:110px;font:500 20px var(--ui);color:#f6e6c6}
.bb-progress{opacity:.55;transition:opacity .2s}.bb-progress:hover{opacity:1}
.chip-toggle{height:52px;padding:0 14px 0 16px;border-radius:14px;gap:10px;font-size:14.5px;background:#1a100acc;border-color:#d6a55755}
.chip-toggle .ic{width:22px;height:22px}
.chip-toggle .sw{width:42px;height:24px}.chip-toggle .sw:after{width:20px;height:20px}
.chip-toggle[aria-pressed=true] .sw:after{transform:translateX(18px)}
.speed{height:52px;padding:0 14px;border-radius:14px;background:#1a100acc;border:1px solid #d6a55755;font-size:14.5px;color:#f1dcb4;gap:12px}
.speed input{width:120px}.speed b{color:#e9c27a}
.legal{padding-bottom:calc(4px + var(--safe-b));margin-top:-6px}
.status{bottom:calc(96px + var(--safe-b))}
/* the zoom reader as a big brass magnifier floating over the book (scene stays visible) */
.zoom.lens-style{display:block;background:none;pointer-events:none;color:#2e1d0f}
.zoom.lens-style .z-top,.zoom.lens-style .z-bottom,.zoom.lens-style .z-pan,.zoom.lens-style .dpad,.zoom.lens-style .z-showui{display:none!important}
.zoom:not(.lens-style) .z-lensbar,.zoom:not(.lens-style) .z-ring,.zoom:not(.lens-style) .z-handle{display:none}
.zoom.lens-style .z-view{position:fixed;left:var(--lx);top:var(--ly);width:var(--ld);height:var(--ld);border-radius:50%;pointer-events:auto;scrollbar-width:none;z-index:3;
  background:radial-gradient(circle at 42% 38%,#fff8e6,#f3e2bd 62%,#e2c792 100%);box-shadow:inset 0 0 28px #6a45204d,inset 0 0 3px #00000040}
.zoom.lens-style .z-view::-webkit-scrollbar{display:none}
.z-glare{position:fixed;left:var(--lx);top:var(--ly);width:var(--ld);height:var(--ld);border-radius:50%;pointer-events:none;z-index:5;background:radial-gradient(circle at 30% 24%,#ffffff7a,#ffffff10 22%,transparent 40%),radial-gradient(circle at 72% 80%,transparent 52%,#3a221024 74%)}
.zoom:not(.lens-style) .z-glare{display:none}
.zoom.lens-style .z-content{padding:calc(var(--ld) / 2) calc(var(--ld) * .15);min-width:0}
.zoom.lens-style .z-view.wrap .z-content{width:100%}
.zoom.lens-style .zl{opacity:.5}
.zoom.lens-style .zl.active{opacity:1}
.z-ring{position:fixed;left:calc(var(--lx) - 16px);top:calc(var(--ly) - 16px);width:calc(var(--ld) + 32px);height:calc(var(--ld) + 32px);border-radius:50%;pointer-events:auto;z-index:2;cursor:move;touch-action:none;
  background:conic-gradient(from 210deg,#7a4a18,#f8dc92,#b8853f,#fff0c0,#9a6424,#f3cf80,#7a4a18);box-shadow:0 0 0 2px #3a2010,0 24px 50px #000b,0 6px 14px #0008,inset 0 0 0 3px #00000038}
.z-ring:before{content:"";position:absolute;inset:7px;border-radius:50%;box-shadow:inset 0 0 0 2px #fff3c8a6,inset 0 0 0 4px #6a3e14aa}
.z-handle{position:fixed;left:calc(var(--lx) + var(--ld) * .5);top:calc(var(--ly) + var(--ld) * .5);width:34px;height:calc(var(--ld) * .62);transform-origin:50% 0;transform:translateX(-50%) rotate(-45deg) translateY(calc(var(--ld) / 2 + 12px));pointer-events:auto;cursor:move;touch-action:none;z-index:1;border-radius:8px 8px 18px 18px;
  background:linear-gradient(180deg,#fff0c0 0,#c8913f 7%,#7a4a1c 13%,#f3cf80 16%,#8a5a24 19%,#2a1608 21%,#4a2a14 45%,#7a4a24 52%,#3a1e0c 62%,#c8913f 64%,#f6da9a 66%,#8a5a24 69%,#2a1608 72%,#1a0c04 100%);box-shadow:inset 4px 0 6px #ffffff22,inset -6px 0 8px #0007,0 10px 20px #0009}
.zoom.moving .z-view{transition:none}
.z-lensbar{position:fixed;left:calc(var(--lx) + var(--ld) / 2);top:calc(var(--ly) + var(--ld) + 26px);transform:translateX(-50%);display:flex;align-items:center;gap:6px;padding:6px 8px;border-radius:14px;pointer-events:auto;z-index:4;background:linear-gradient(180deg,#2a1a10f0,#1a100af0);border:1px solid #d6a5576b;box-shadow:0 10px 24px #000a;color:#ffe6b0}
.z-lensbar b{min-width:52px;text-align:center;font:600 13px var(--ui);font-variant-numeric:tabular-nums}
.z-lensbar .zb{min-width:34px;height:34px}
@media (max-width:1360px){.pill{padding:0 14px}.tools{gap:8px}}
@media (max-width:1280px){.pill .lbl{display:none}.pill{width:52px;padding:0;justify-content:center}.pill.group{width:auto;padding:0 8px 0 6px}.pill.group .lbl{display:none}#btnOpen,#btnCustom{width:auto;padding:0 16px}#btnOpen .lbl,#btnCustom .lbl{display:inline}.speed input{width:90px}}
@media (max-width:1180px){.app.side-open .stage{padding-right:12px}.panel.side{width:270px}}
@media (max-width:980px){.speed{display:none}.rb-l{display:none}.rb.wide{padding:0;min-width:48px}}
@media (max-width:760px){
  :root{--top-h:58px}
  .topbar{padding:calc(6px + var(--safe-t)) calc(8px + var(--safe-r)) 0 calc(8px + var(--safe-l))}
  .tools{gap:5px}.tools-gap{display:none}
  .pill,.pill.icon{height:44px;width:44px;border-radius:14px}
  .pill .ic{width:20px;height:20px}
  #btnOpen,#btnCustom{width:44px;padding:0}#btnOpen .lbl,#btnCustom .lbl{display:none}
  .pill.group{padding:0 4px;gap:4px}.pill.group select{display:none}
  .playsq{width:36px;height:36px}
  .panel.side{top:auto;left:0;right:0;bottom:0;width:auto;border-radius:20px 20px 0 0;max-height:64dvh}
  .panel.side .scenes button{font-size:11px}
  .sm-only{display:flex}
  .bottombar{width:calc(100% - 12px);padding:6px 8px;gap:4px;border-radius:16px;margin-bottom:calc(4px + var(--safe-b))}
  .rb{min-width:42px;height:42px;border-radius:12px}.rb .ic{width:20px;height:20px}
  .rb.flat{min-width:36px}
  .pagecount{min-width:64px;font-size:15px}
  .bb-sep{display:none}
  .chip-toggle{height:42px;padding:0 8px;gap:6px}.chip-toggle .sw{width:34px;height:20px}.chip-toggle .sw:after{width:16px;height:16px}.chip-toggle[aria-pressed=true] .sw:after{transform:translateX(14px)}
  .z-lensbar{top:auto;bottom:calc(70px + var(--safe-b))}
  .status{bottom:calc(66px + var(--safe-b))}
}
@media (max-width:400px){.bb-group{gap:2px}.rb{min-width:38px}.pagecount{min-width:56px;font-size:14px}}

@media (min-width:900px){.stage{align-items:flex-end;padding-bottom:14px}}
.bottombar>*{min-width:0}
@media (max-width:760px){#btnStop{display:none}.reading #btnStop,.zoom-open #btnStop{display:inline-flex}}
@media (max-width:420px){#btnMark{display:none}}
@media (max-width:760px){.zoom-open #btnToc,.reading #btnToc{display:none}}