*{box-sizing:border-box}html{background:#e4e9da}body{--room:#e8ead9;--ink:#54634b;--light:#e9f1cf;--shade:#526b4c;--paper:#f6efda;margin:0;background:var(--room);color:var(--ink);font-family:"Songti SC","STSong",Georgia,serif;transition:background 1.4s,color 1s;overflow-x:hidden}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;min-height:44px;touch-action:manipulation}a{color:inherit;text-decoration:none}:focus-visible{outline:2px solid #b8b087;outline-offset:4px}body[data-chapter="2"]{--room:#ede2c9;--ink:#7a694c;--light:#fff0c3;--shade:#957d54;--paper:#f6e8cc}body[data-chapter="3"]{--room:#c8a7a5;--ink:#654f5c;--light:#f4c7ae;--shade:#855e70;--paper:#f0e0d1}body[data-chapter="4"]{--room:#253a50;--ink:#d3dfdf;--light:#b5dce8;--shade:#16243a;--paper:#c9d9da}body[data-chapter="5"]{--room:#182d41;--ink:#d0dce2;--light:#adc5d5;--shade:#122238;--paper:#c3d4d7}
body:before{content:"";position:fixed;inset:0;pointer-events:none;background:radial-gradient(ellipse at 25% 5%,var(--light),transparent 60%),linear-gradient(155deg,#ffffff22,transparent 70%);opacity:.75;transition:background 1.4s}.book-room{position:relative;isolation:isolate;max-width:1050px;min-height:100vh;min-height:100dvh;margin:auto;display:flex;flex-direction:column;align-items:center;overflow:clip}.reader-header{width:100%;display:flex;align-items:center;justify-content:space-between;padding:max(12px,env(safe-area-inset-top)) 24px 8px;font-size:11px;position:relative;z-index:10}.reader-header>span{font-size:10px;letter-spacing:3px;opacity:.65}.reader-header>div{display:flex;gap:9px;align-items:center}.reader-header #bookSound{font-size:10px;letter-spacing:.5px;padding-inline:8px}.reader-header #menu{font-size:22px;width:40px}.reader-header #closeBook{font-size:11px;letter-spacing:1px;padding:0}.heading{position:relative;text-align:center;margin:15px 15px 0;z-index:2;min-height:113px}.eyebrow{font-size:10px;letter-spacing:5px;opacity:.65}.heading h1{font-size:28px;font-weight:400;letter-spacing:4px;margin:15px 0 10px}.heading p{font-size:11px;line-height:1.8;letter-spacing:1px;opacity:.7;margin:0}.reading-table{position:absolute;z-index:-1;left:-20%;right:-20%;top:34%;bottom:-20%;transform:perspective(800px) rotateX(20deg);background:repeating-linear-gradient(93deg,transparent 0,transparent 110px,#8063420c 112px,transparent 114px),repeating-linear-gradient(1deg,#a88d6610 0,#f4e3bc16 2px,transparent 4px,transparent 16px),radial-gradient(ellipse at 40% 0,var(--light),#a58c6630 65%);border-top:1px solid #b0a38726;box-shadow:0 -40px 80px #fff9df0c;transition:background 1.5s}.book-world{--turn:0;position:relative;width:min(89vw,820px);height:min(61vw,530px);min-height:260px;margin:25px auto 5px;perspective:1500px;touch-action:pan-y;outline-offset:15px;z-index:3}.book-stage{position:absolute;inset:0;transform:rotateX(27deg) rotateZ(-2deg);transform-style:preserve-3d}.book-cast-shadow{position:absolute;inset:20% -3% -9%;border-radius:50%;background:#1b322a4a;filter:blur(22px);transform:rotate(-3deg) scaleY(.8);z-index:-1}.book-binding{position:absolute;inset:-1% -2% -5%;border-radius:9px 14px 18px 10px;background:linear-gradient(90deg,#566b58,#859079 47%,#495d4f 50%,#7d8b70 54%,#687c5f);transform:translateZ(-15px);box-shadow:1px 10px 0 #3b5348,2px 19px 13px #1c36283b}.page-stack{position:absolute;inset:2% -1% -3%;border-radius:4px 8px 12px 6px;background:repeating-linear-gradient(0deg,#dbd2b9 0px,#f3ecd8 1px,#f3ecd8 3px,#c8bea4 4px);transform:translateZ(-6px);box-shadow:0 3px 0 #f2e7ce}
#chapterPages{position:absolute;inset:0;transform-style:preserve-3d}.chapter-card{position:absolute;inset:0;border-radius:5px 8px 14px 5px;background:var(--paper);box-shadow:inset 0 0 25px #8e765230,0 2px 1px #e1d6b9;transform-style:preserve-3d;visibility:hidden;pointer-events:none;color:#5f6b50}.chapter-card.is-current{visibility:visible;pointer-events:auto}.paper-half{position:absolute;top:0;bottom:0;width:50%;pointer-events:none;background:linear-gradient(90deg,#a08b6725,transparent 14%,#fffaf21a 85%,#735e422e);border:1px solid #c4b7953b}.paper-left{left:0;border-radius:5px 0 0 5px}.paper-right{right:0;transform:rotateY(-3deg);transform-origin:left center;border-radius:0 8px 12px 0;background:linear-gradient(90deg,#7363483b,transparent 12%,#fff9e91f 85%,#8e78572a)}.printed-landscape{position:absolute;inset:6% 4% 21%;overflow:hidden;opacity:.83;transform:translateZ(2px);mask-image:radial-gradient(ellipse,#000 15%,#0009 60%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse,#000 15%,#0009 60%,transparent 75%);pointer-events:none}.printed-atlas{position:absolute;width:200%;height:200%;max-width:none;left:0;top:0;object-fit:fill}.moon .printed-atlas{width:300%;height:100%}.rain .printed-atlas{left:-100%;top:-100%}.book-spine{position:absolute;left:48%;width:4%;top:0;bottom:0;transform:translateZ(3px);background:linear-gradient(90deg,transparent,#8f795943 48%,#fffcdd80 54%,transparent);pointer-events:none}.popup-scene{position:absolute;inset:0 0 19%;transform-style:preserve-3d;pointer-events:none}.popup-image{position:absolute;left:var(--x);top:var(--y);width:var(--w);height:var(--h);object-fit:contain;object-position:50% 100%;transform:translate(-50%,-100%) translateZ(var(--z)) rotateX(-27deg);transform-origin:50% 100%;filter:drop-shadow(5px 9px 3px #223c353f);transition:transform .45s;backface-visibility:hidden}.popup-image:after{content:""}.card-copy{position:absolute;left:7%;bottom:5%;width:78%;transform:translateZ(5px);pointer-events:none}.card-copy>span{font-size:9px;letter-spacing:2px;opacity:.7}.card-copy h2{font-weight:400;font-size:19px;letter-spacing:3px;margin:7px 0}.card-copy p{display:none}.status{font-size:9px;letter-spacing:1px;opacity:.65}.page-number{position:absolute;bottom:7%;right:6%;font:italic 13px Georgia,serif;opacity:.5;font-weight:400;transform:translateZ(5px)}.moon,.rain{color:#415c6a}.paper-turn{position:absolute;inset:0 0 0 50%;transform-origin:left center;transform:translateZ(100px) rotateY(calc(var(--turn)*-172deg));background:linear-gradient(90deg,#c0b397,#fff6de 18%,#f8efd6 85%,#b7ab91);border-radius:0 8px 10px 0;box-shadow:8px 4px 20px #2d332833;backface-visibility:visible;pointer-events:none;visibility:hidden;transition:transform .68s cubic-bezier(.3,.1,.15,1);transform-style:preserve-3d}.paper-turn-back{position:absolute;inset:0;background:repeating-linear-gradient(0deg,#a7af8c05 0,#a7af8c05 1px,transparent 1px,transparent 8px),linear-gradient(90deg,#c6b99e,#fff6df 18%);transform:translateZ(-1px) rotateY(180deg);backface-visibility:hidden}.is-turning .paper-turn{visibility:visible}.turn-back .paper-turn{inset:0 50% 0 0;transform-origin:right center;transform:translateZ(100px) rotateY(calc(var(--turn)*172deg))}.is-turning .is-current .popup-image{transform:translate(-50%,-100%) translateZ(2px) rotateX(65deg);filter:drop-shadow(1px 2px 1px #223c3522)}.page-unfold .is-current .popup-image{animation:paper-pop .65s cubic-bezier(.2,.7,.3,1) both}.bookmarks{position:absolute;right:-6%;top:8%;display:flex;flex-direction:column;gap:5px;z-index:-1;transform:rotate(-2deg)}.bookmarks button{min-width:44px;min-height:44px;background:#b4c29b;color:#4c634d;border:1px solid #899c7644;border-radius:0 7px 7px 0;padding:4px 6px 4px 17px;box-shadow:2px 3px 3px #203c2622;font:12px Georgia,serif;transition:transform .3s,filter .3s}.bookmarks button:nth-child(2){background:#d5c292}.bookmarks button:nth-child(3){background:#c09d99}.bookmarks button:nth-child(4){background:#96adb8}.bookmarks button:nth-child(5){background:#667e94;color:#edf0de}.bookmarks button.current{transform:translateX(9px);filter:brightness(1.12)}
.reader-controls{position:relative;z-index:5;width:min(90%,560px);display:flex;justify-content:space-between;align-items:center;text-align:center;gap:12px;margin:25px 0 5px}.reader-controls>button{width:46px;height:46px;border:1px solid currentColor;border-radius:50%;font-size:20px;opacity:.65;flex:none}.reader-controls>button:disabled{opacity:.18;cursor:default}.reader-controls #enterChapter{display:inline-flex;gap:18px;align-items:center;justify-content:center;min-height:48px;border-bottom:1px solid #8c9a7b66;padding:10px 14px;font-size:13px;letter-spacing:3px}.reader-controls #enterChapter span{opacity:.6;font-size:18px;letter-spacing:0}.reader-controls p{font-size:9px;letter-spacing:1px;opacity:.5;margin:12px 0 0}.table-keepsakes{position:relative;display:flex;align-items:flex-end;justify-content:center;width:230px;height:100px;gap:25px;margin:4px auto 0;pointer-events:none;opacity:.7;transition:filter 2s}.table-lantern{height:88px;width:60px;object-fit:contain;filter:drop-shadow(1px 5px 3px #263d2533);transition:filter 2s}.tea-cup{display:block;position:relative;width:36px;height:19px;bottom:9px;border-radius:5px 5px 18px 18px;background:linear-gradient(90deg,#ddd1b6,#fff7d9 50%,#cdbb95);box-shadow:0 3px 2px #364d2a22}.tea-cup:before{content:"";position:absolute;inset:-4px 1px 9px;border-radius:50%;border:3px solid #eee4c9;background:#967345}.tea-cup:after{content:"";position:absolute;right:-9px;top:1px;width:10px;height:10px;border:3px solid #dbcfaf;border-radius:50%;z-index:-1}.reader-footnote{font-size:9px;letter-spacing:2px;opacity:.45;margin:20px 0 24px;text-align:center}body[data-chapter="5"] .table-lantern{filter:drop-shadow(0 0 24px #ffd688) drop-shadow(0 0 7px #ffe0a3);animation:lamp-home 5s ease-in-out infinite}body[data-chapter="5"] .tea-cup{box-shadow:0 -12px 22px #ffe3a026,0 4px 8px #09192455}.reader-entering .book-world{transform:scale(1.12);opacity:0;transition:transform .8s ease,opacity .8s ease}.reader-entering .heading,.reader-entering .reader-controls{opacity:0;transition:opacity .6s}.sr-only{position:absolute!important;left:-10000px!important;width:1px;height:1px;overflow:hidden}
dialog{width:min(360px,90vw);background:#f9f6e9;border:1px solid #c2ceb0;padding:29px 25px;color:#536d48;box-shadow:0 15px 65px #2a482930}dialog::backdrop{background:#243c355e;backdrop-filter:blur(5px)}dialog #close{position:absolute;right:8px;top:3px;font-size:24px}dialog h2{font-size:20px;font-weight:400}dialog p{font-size:12px;line-height:1.9}.action{display:block;width:100%;background:#e3ead4;border:1px solid #c7d3b7;font-size:12px;margin-top:11px;padding:12px 8px}#saveMessage{font-size:11px}.music-credits{margin-top:22px;font-size:10px;line-height:1.8}.music-credits summary{cursor:pointer;letter-spacing:2px}.music-credits a{text-decoration:underline}
@keyframes paper-pop{from{transform:translate(-50%,-100%) translateZ(2px) rotateX(65deg)}to{transform:translate(-50%,-100%) translateZ(var(--z)) rotateX(-27deg)}}@keyframes lamp-home{0%,100%{opacity:.85}50%{opacity:1}}
@media(min-width:750px){.heading{margin-top:22px}.heading h1{font-size:34px}.book-world{margin-top:55px}.card-copy h2{font-size:28px}.card-copy>span,.status{font-size:11px}.bookmarks{right:-4%;top:12%;gap:10px}.reader-controls{margin-top:20px}.table-keepsakes{position:absolute;right:30px;bottom:50px;transform:scale(1.2)}.reader-footnote{margin-top:32px}}
@media(max-width:500px){.reader-header{padding-inline:18px}.reader-header>span{display:none}.reader-header #bookSound{font-size:10px}.heading{margin-top:28px;min-height:122px}.heading h1{font-size:25px}.heading p{font-size:10px;letter-spacing:.5px}.book-world{width:86vw;margin-left:3vw;margin-top:50px;min-height:270px;height:72vw}.book-stage{transform:rotateX(24deg) rotateZ(-3deg)}.popup-image{transform:translate(-50%,-100%) translateZ(var(--z)) rotateX(-24deg)}.bookmarks{right:-10%;top:7%;gap:3px}.bookmarks button{min-width:44px;padding-left:13px}.card-copy{bottom:7%;left:7%}.card-copy h2{font-size:15px;letter-spacing:2px;margin:7px 0}.card-copy>span{font-size:8px}.status{font-size:8px}.reader-controls{margin-top:13px;width:88%}.reader-controls>button{width:44px;height:44px}.table-keepsakes{margin-top:10px}.reader-footnote{margin-top:14px}}
@media(max-height:700px) and (max-width:500px){.heading{margin-top:7px;min-height:100px}.heading h1{margin-top:10px}.book-world{margin-top:15px;height:68vw;min-height:240px}.reader-controls{margin-top:4px}.table-keepsakes{height:60px;transform:scale(.7);margin-top:-5px}.reader-footnote{margin:3px 0 15px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}.book-stage{transform:rotateX(18deg)}.popup-image{transform:translate(-50%,-100%) translateZ(8px) rotateX(-18deg)}}


.book-world{user-select:none;-webkit-user-select:none}.book-world img,.book-world a{-webkit-user-drag:none}


@media(min-width:750px){.popup-image{height:calc(var(--h) * .8)}}
/* v48: purpose-painted watercolor paper worlds, not repurposed puzzle props. */
.book-world{width:min(94vw,900px);height:min(85vw,650px);min-height:320px;margin:10px auto 20px;perspective:1300px;touch-action:pan-y}.book-stage{transform:none!important;transform-style:flat}.book-cast-shadow{inset:75% 1% -2%;background:#3e332135;filter:blur(14px);transform:scaleY(.5)}.chapter-card{background:none!important;box-shadow:none;border-radius:0;transform-style:flat;overflow:visible}.paper-foundation{position:absolute;width:104%;height:auto;left:-2%;bottom:0;pointer-events:none;filter:drop-shadow(0 12px 8px #4b39291c);z-index:0}.paper-diorama{position:absolute;inset:0;pointer-events:none;perspective:900px}.paper-piece{position:absolute;width:var(--w);aspect-ratio:1;left:var(--x);bottom:var(--b);transform:translateX(-50%);z-index:var(--layer);pointer-events:auto}.paper-pop,.paper-life,.paper-cell{position:relative;width:100%;height:100%;transform-origin:50% 91%;backface-visibility:hidden}.paper-pop{will-change:transform;filter:drop-shadow(1px 4px 2px #4a38271c)}.paper-cell{overflow:hidden;pointer-events:none}.paper-cell img{position:absolute;width:300%;height:200%;max-width:none;object-fit:fill;pointer-events:none;-webkit-user-drag:none}.piece-terrain .paper-life{transform:scaleY(.52);transform-origin:50% 100%}.piece-terrain .paper-pop{filter:drop-shadow(0 3px 2px #4a382720)}.piece-tree .paper-life{animation:paper-canopy-breeze 7s ease-in-out infinite}.piece-flowers .paper-life,.piece-flowers-right .paper-life{animation:paper-flower-breeze 5.5s ease-in-out infinite}.piece-flowers-right .paper-life{transform:scaleX(-1);animation-name:paper-flower-breeze-right}.piece-companion .paper-life{animation:paper-companion-breath 5s ease-in-out infinite}.wind .piece-companion .paper-life,.moon .piece-companion .paper-life{animation:paper-messenger-float 5s ease-in-out infinite}.rain .piece-companion .paper-life{animation:paper-cloud-float 6s ease-in-out infinite}.paper-arrive .paper-pop{animation:paper-spring-open 1.12s cubic-bezier(.16,.68,.32,1) var(--delay) both}.paper-answer .piece-companion .paper-life{animation:paper-friendly-hop 1.35s ease-in-out both}.paper-answer .piece-tree .paper-life{animation:paper-tree-answer 1.6s ease-in-out both}.paper-answer .piece-flowers .paper-life{animation:paper-flower-answer 1.35s .08s ease-in-out both}.is-turning .is-current .paper-pop{animation:none!important;transform:perspective(700px) rotateX(82deg) scaleY(.2);opacity:0;transition:transform .35s ease-in,opacity .3s}.paper-turn{top:55%;bottom:10%;left:50%;right:2%;transform:rotateY(calc(var(--turn)*-172deg));z-index:25}.turn-back .paper-turn{top:55%;bottom:10%;left:2%;right:50%;transform:rotateY(calc(var(--turn)*172deg))}.card-copy{left:10%;bottom:6%;width:65%;transform:none;z-index:8;color:#8c7653;pointer-events:none}.card-copy>span,.card-copy h2,.card-copy p{display:none}.card-copy .status{font-size:9px;letter-spacing:1px;opacity:.7}.bookmarks{left:50%;right:auto;top:auto;bottom:-35px;transform:translateX(-50%);flex-direction:row;gap:6px;z-index:2}.bookmarks button{padding:0;min-width:44px;width:44px;min-height:44px;border-radius:0 0 10px 10px;box-shadow:1px 3px 3px #453d2c18}.bookmarks button.current{transform:translateY(6px);filter:brightness(1.12)}.reader-controls{margin-top:48px}.reader-controls #enterChapter{font-size:13px}.table-keepsakes{display:none}.reader-footnote{margin:22px 0 25px}.reading-table{top:42%;border:0;background:radial-gradient(ellipse at 48% 12%,var(--light),transparent 70%),linear-gradient(110deg,#a88b6312,#fff8dc0d);box-shadow:none}.heading{min-height:110px;margin-top:12px}.heading h1{margin:12px 0 10px}.bookmarks button:nth-child(1){background:#cad5a5}.bookmarks button:nth-child(2){background:#e1c58d}.bookmarks button:nth-child(3){background:#d9ada5}.bookmarks button:nth-child(4){background:#b4c4d7}.bookmarks button:nth-child(5){background:#8d9eb9}.moon .paper-foundation,.rain .paper-foundation{filter:brightness(.96) drop-shadow(0 12px 9px #111c3344)}
@keyframes paper-spring-open{0%{opacity:0;transform:perspective(750px) rotateX(88deg) translateY(13px) scale(.86,.18)}25%{opacity:1}50%{transform:perspective(750px) rotateX(-7deg) translateY(-4px) scale(1.035,1.065)}70%{transform:perspective(750px) rotateX(4deg) translateY(2px) scale(.993,.975)}87%{transform:perspective(750px) rotateX(-1.7deg) translateY(-1px) scale(1.008,1.012)}100%{opacity:1;transform:perspective(750px) rotateX(0) translateY(0) scale(1)}}
@keyframes paper-canopy-breeze{0%,100%{transform:rotate(-.65deg)}50%{transform:rotate(.8deg)}}@keyframes paper-flower-breeze{0%,100%{transform:rotate(.65deg)}50%{transform:rotate(-.9deg)}}@keyframes paper-flower-breeze-right{0%,100%{transform:scaleX(-1) rotate(.65deg)}50%{transform:scaleX(-1) rotate(-.8deg)}}@keyframes paper-companion-breath{0%,100%{transform:scale(1)}50%{transform:scale(1.006,1.018)}}@keyframes paper-messenger-float{0%,100%{transform:translate(0,0) rotate(-1deg)}50%{transform:translate(2px,-5px) rotate(1.2deg)}}@keyframes paper-cloud-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
@keyframes paper-friendly-hop{0%,100%{transform:translateY(0) scale(1)}15%{transform:translateY(2px) scale(1.055,.93)}38%{transform:translateY(-10px) scale(.97,1.045) rotate(-2deg)}65%{transform:translateY(1px) scale(1.025,.975)}83%{transform:translateY(-2px) scale(.99,1.01)}}@keyframes paper-tree-answer{0%,100%{transform:rotate(0)}25%{transform:rotate(-2.3deg)}50%{transform:rotate(1.8deg)}75%{transform:rotate(-.7deg)}}@keyframes paper-flower-answer{0%,100%{transform:rotate(0)}30%{transform:rotate(2.8deg)}60%{transform:rotate(-1.7deg)}80%{transform:rotate(.7deg)}}
@media(max-width:500px){.heading{margin-top:13px;min-height:109px}.heading h1{font-size:25px}.book-world{width:94vw;height:92vw;min-height:330px;margin:8px auto 18px}.reader-controls{margin-top:47px;width:86%}.card-copy{bottom:7%;left:10%}.card-copy .status{font-size:8px}.reader-footnote{margin-top:17px}.bookmarks{bottom:-34px;gap:5px}.bookmarks button{width:44px;min-width:44px}.paper-foundation{width:104%;left:-2%}.reader-controls p{font-size:9px}}
@media(min-width:750px){.heading{margin-top:8px;min-height:110px}.book-world{height:min(67vw,620px);margin-top:4px}.reader-controls{margin-top:35px}.card-copy .status{font-size:11px}.bookmarks{bottom:-35px;gap:10px}}
@media(max-height:700px) and (max-width:500px){.heading{margin-top:0;min-height:95px}.heading h1{font-size:23px;margin:8px 0}.book-world{height:83vw;min-height:280px;margin-top:0}.reader-controls{margin-top:43px}.reader-footnote{margin:9px 0 14px}}
@media(prefers-reduced-motion:reduce){.paper-pop,.paper-life{animation:none!important;transition:none!important}.is-turning .is-current .paper-pop{transform:none;opacity:1}.piece-terrain .paper-life{transform:scaleY(.52)}}
.paper-loading .paper-diorama{opacity:0}.paper-loading:after{content:'✧';position:absolute;left:48%;bottom:24%;font-size:25px;color:#ac9c69;animation:paper-wait 1.8s ease-in-out infinite;pointer-events:none}@keyframes paper-wait{0%,100%{opacity:.25;transform:scale(.9)}50%{opacity:.8;transform:scale(1.1)}}
@media(prefers-reduced-motion:reduce){.paper-loading:after{animation:none}}
.chapter-card:not(.is-current) .paper-life{animation-play-state:paused}.chapter-card:not(.is-current) .paper-pop{will-change:auto}

/* Remove generator halo haze at composition time; keep source PNGs intact. */
.paper-cell img,.paper-foundation{filter:url(#paper-alpha-clean)}.paper-cell{mask-image:linear-gradient(to right,transparent,#000 2%,#000 98%,transparent),linear-gradient(to bottom,transparent,#000 2%,#000 98%,transparent);mask-composite:intersect;-webkit-mask-image:linear-gradient(to right,transparent,#000 2%,#000 98%,transparent),linear-gradient(to bottom,transparent,#000 2%,#000 98%,transparent);-webkit-mask-composite:source-in}
/* v49: only a completed gesture starts folding; the lifted leaf is sampled
   from exactly the same watercolor book that stays underneath it. */
.paper-cell{mask:none!important;-webkit-mask:none!important}.paper-cell canvas{display:block;position:absolute;inset:0;width:100%;height:100%;filter:none}.paper-bitmap[data-alpha-baked="false"]{filter:url(#paper-alpha-clean);mask-image:linear-gradient(to right,transparent,#000 2%,#000 98%,transparent);-webkit-mask-image:linear-gradient(to right,transparent,#000 2%,#000 98%,transparent)}.paper-pop,.piece-terrain .paper-pop,.paper-foundation{filter:none!important}.paper-foundation{will-change:auto}.is-turning .is-current .paper-pop{opacity:1;transform:none;transition:none}.is-closing .is-current .paper-pop{animation:none!important;transform:perspective(750px) rotateX(78deg) scaleY(.18);opacity:0;transition:transform .27s cubic-bezier(.4,0,.7,1),opacity .27s ease-in}.is-closing .paper-life{animation-play-state:paused}.is-gesture{cursor:grabbing}.is-gesture .paper-life{animation-play-state:paused}.paper-turn,.turn-back .paper-turn{inset:auto;top:auto;bottom:0;left:-2%;right:auto;width:104%;height:auto;aspect-ratio:3/2;background:none;border:0;border-radius:0;box-shadow:none;transform:none;transform-origin:50% 82%;transition:none;backface-visibility:visible;will-change:transform;overflow:hidden;clip-path:polygon(50% 56%,59% 45%,86% 46%,96% 84%,51% 93%)}.turn-back .paper-turn{clip-path:polygon(50% 56%,41% 45%,14% 46%,4% 84%,49% 93%)}.paper-turn-face{position:absolute;inset:0;width:100%;height:100%;object-fit:fill;filter:none!important;pointer-events:none;backface-visibility:visible}.book-cover-showing .paper-pop,.book-cover-showing .paper-life{animation-play-state:paused!important}
@media(prefers-reduced-motion:reduce){.is-closing .is-current .paper-pop{transform:none;opacity:1;transition:none}}
/* Shade the actual lifted leaf, with its painted fibres and curved outline. */
.paper-turn,.turn-back .paper-turn{clip-path:none;filter:drop-shadow(4px 5px 3px #4f3d2c40)}.paper-turn-face{clip-path:polygon(50% 56%,59% 45%,86% 46%,96% 84%,51% 93%);filter:brightness(.96)!important}.turn-back .paper-turn-face{clip-path:polygon(50% 56%,41% 45%,14% 46%,4% 84%,49% 93%)}

.clear-save{color:#8c5147!important;border-color:#ad7e6a66!important}#clearConfirm{margin-top:18px;padding:16px;border:1px solid #ad7e6a66;border-radius:14px;background:#f5e8d9}#clearConfirm[hidden],#clearSave[hidden]{display:none!important}.clear-actions{display:flex;gap:10px;flex-wrap:wrap}.clear-actions .action{flex:1;min-width:120px}#clearConfirm h3{margin-top:0}#clearConfirm p{line-height:1.8}

.chapter-card.is-locked .paper-diorama{opacity:.6}.chapter-card.is-locked .paper-life{animation-play-state:paused}.chapter-card.is-locked .status{color:#887e77}.reader-controls #enterChapter.is-locked{color:#8b8175;border-color:#b9aa9644;cursor:default}.chapter-card.is-locked:after{content:"尚未启程";position:absolute;left:50%;bottom:10%;transform:translateX(-50%);padding:7px 14px;border:1px solid #ac99896b;border-radius:20px;background:#f3e9dbe6;color:#887b69;font:11px serif;letter-spacing:3px;pointer-events:none}
.book-world.is-gesture .chapter-card.is-locked::after,.book-world.is-closing .chapter-card.is-locked::after,.book-world.is-turning .chapter-card.is-locked::after{visibility:hidden}