:root{--ink:#4a3428;--ink2:#7a5a46;--paper:#f6eedf;--kraft:#c9a57c;--red:#a8483a;--hand:"LXGW WenKai","Kaiti SC","STKaiti","KaiTi",serif}
*{box-sizing:border-box}
html,body{margin:0;height:100%;overflow:hidden;background:#2e2019;color:var(--ink);font-family:var(--hand);touch-action:manipulation;-webkit-tap-highlight-color:transparent;overscroll-behavior:none;-webkit-user-select:none;user-select:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;padding:0}
#view{position:fixed;inset:0}#c{width:100%;height:100%;display:block;touch-action:none}
#vignette{position:fixed;inset:0;pointer-events:none;background:radial-gradient(ellipse at 38% 30%,rgba(255,214,150,.10),transparent 45%),radial-gradient(ellipse at 50% 50%,transparent 55%,rgba(20,10,5,.55) 100%)}
/* loading */
#loading{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:#2e2019;z-index:200;transition:opacity 1.2s}
#loading.gone{opacity:0;pointer-events:none}
.lnote{font-size:22px;color:#f1e3c8;letter-spacing:2px;animation:breathe 2.4s ease-in-out infinite}@keyframes breathe{50%{opacity:.55}}
/* paper tag (button) */
.tag{position:relative;display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;padding:6px 18px 6px 26px;font-size:17px;color:var(--ink);
 background:#efe2c8;clip-path:polygon(14px 0,100% 0,100% 100%,14px 100%,0 50%);filter:drop-shadow(0 2px 1px rgba(40,20,10,.35));transition:transform .2s}
.tag::before{content:"";position:absolute;left:9px;top:50%;width:7px;height:7px;margin-top:-3.5px;border-radius:50%;background:#2e2019;box-shadow:inset 0 0 0 1.5px #8a6a52}
.tag:active{transform:translateY(1px) rotate(-1deg)}
.tag.small{font-size:15px;min-height:40px;padding:4px 14px 4px 22px}
.tag.on{background:#e8c98e}
/* ribbons */
#ribbons{position:fixed;top:0;right:calc(14px + env(safe-area-inset-right));display:flex;gap:6px;z-index:50}
.ribbon{width:46px;padding:calc(10px + env(safe-area-inset-top)) 0 22px;color:#fbefdc;font-size:15px;writing-mode:vertical-rl;letter-spacing:3px;display:flex;align-items:center;gap:6px;
 clip-path:polygon(0 0,100% 0,100% 100%,50% calc(100% - 12px),0 100%);transition:transform .35s cubic-bezier(.3,1.5,.5,1);transform-origin:top;box-shadow:inset 0 -2px 0 rgba(0,0,0,.15)}
.ribbon b{writing-mode:horizontal-tb;font-weight:normal;font-size:13px;opacity:.85}
.ribbon:hover,.ribbon:active{transform:translateY(5px)}
.r1{background:linear-gradient(90deg,#8f3b31,#a8483a 40%,#8f3b31)}.r2{background:linear-gradient(90deg,#6f7a4a,#848f58 40%,#6f7a4a)}.r3{background:linear-gradient(90deg,#5c6f86,#6e839b 40%,#5c6f86)}
.ribbon.bump{animation:bump .6s}@keyframes bump{30%{transform:translateY(12px)}}
#btnSound{position:fixed;top:calc(10px + env(safe-area-inset-top));left:calc(10px + env(safe-area-inset-left));z-index:50}
#btnGyro{position:fixed;top:calc(56px + env(safe-area-inset-top));left:calc(10px + env(safe-area-inset-left));z-index:50;display:none}
body.coarse #btnGyro{display:inline-flex}
/* page-turn tags */
.side{position:fixed;bottom:calc(16px + env(safe-area-inset-bottom));z-index:45;font-size:15px}
.side.l{left:10px}.side.r{right:10px;clip-path:polygon(0 0,calc(100% - 14px) 0,100% 50%,calc(100% - 14px) 100%,0 100%);padding:6px 26px 6px 18px}
.side.r::before{left:auto;right:9px}
.focus{position:fixed;z-index:45;top:50%;font-size:15px;writing-mode:vertical-rl;padding:22px 8px 14px;clip-path:polygon(0 12px,50% 0,100% 12px,100% 100%,0 100%);display:none}
.focus::before{left:50%;top:6px;margin-left:-3.5px;margin-top:0}
body.port .focus{display:inline-flex}.focus.atR{right:0}.focus.atL{left:0}
#pageNo{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(26px + env(safe-area-inset-bottom));color:#e9d8bb;font-size:15px;z-index:44;letter-spacing:2px;pointer-events:none}
/* note: a strip of paper under the book for live bits */
#note{position:fixed;left:50%;transform:translateX(-50%) rotate(-.6deg);bottom:calc(70px + env(safe-area-inset-bottom));width:min(560px,calc(100% - 28px));z-index:42;
 background:var(--paper);padding:10px 18px 12px;font-size:17px;line-height:1.6;box-shadow:0 6px 14px -6px rgba(0,0,0,.55);
 clip-path:polygon(0 4%,3% 0,30% 3%,60% 0,88% 2%,100% 0,99% 50%,100% 97%,70% 100%,40% 97%,12% 100%,0 96%);transition:opacity .4s,transform .4s}
#note.empty{opacity:0;pointer-events:none;transform:translateX(-50%) translateY(10px)}
#ncap{font-size:13px;color:var(--ink2)}#nbody p{margin:.1em 0}#nbody .choice{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
/* whisper (gentle notice) */
#whisper{position:fixed;left:50%;bottom:calc(150px + env(safe-area-inset-bottom));transform:translate(-50%,16px) rotate(1.2deg);opacity:0;z-index:90;pointer-events:none;
 background:#fbf3df;color:var(--ink);padding:8px 16px 8px 12px;font-size:16px;display:flex;gap:8px;align-items:center;box-shadow:0 4px 10px -4px rgba(0,0,0,.5);transition:.45s;max-width:88vw}
#whisper.show{opacity:1;transform:translate(-50%,0) rotate(-1deg)}
.doodle{width:24px;height:24px;flex:none}.doodle path{fill:none;stroke:#c98a2c;stroke-width:2.4;stroke-linejoin:round;stroke-dasharray:140;stroke-dashoffset:140}
#whisper.show .doodle path{animation:draw .8s .1s forwards}@keyframes draw{to{stroke-dashoffset:0}}
/* little hand-drawn burst at the tap point */
#burst{position:fixed;inset:0;pointer-events:none;z-index:95}
#burst svg{position:absolute;width:70px;height:70px;margin:-35px 0 0 -35px;overflow:visible}
#burst path{fill:none;stroke:#d79a3a;stroke-width:2.6;stroke-linecap:round;stroke-dasharray:30;stroke-dashoffset:30;animation:draw .5s forwards,fade 1.1s .4s forwards}
@keyframes fade{to{opacity:0}}
/* first-time guide */
#guide{position:fixed;z-index:120;display:none}#guide.show{display:block}
.sticky{position:absolute;width:190px;right:0;bottom:0;background:#f7e48f;padding:16px 16px 10px;transform:rotate(-3deg);box-shadow:0 10px 14px -8px rgba(0,0,0,.6);font-size:17px;line-height:1.55}
.sticky p{margin:0}.sticky .sig{text-align:right;color:var(--ink2);font-size:14px;margin:4px 0 6px}
.tape{position:absolute;left:50%;top:-10px;width:70px;height:22px;margin-left:-35px;background:rgba(240,230,210,.7);transform:rotate(4deg)}
#guide .arrow{position:absolute;width:90px;height:90px;right:-30px;bottom:-94px;overflow:visible}
#guide .arrow path{fill:none;stroke:#f7e48f;stroke-width:3.5;stroke-linecap:round;stroke-dasharray:200;stroke-dashoffset:200;animation:draw 1.2s .6s forwards}
/* modals */
.modal{position:fixed;inset:0;background:rgba(30,18,12,.6);display:none;align-items:center;justify-content:center;z-index:150}.modal.show{display:flex}
.album,.sheet,.notebook{position:relative;width:min(860px,94vw);max-height:90vh;display:flex;flex-direction:column;padding:22px 22px 16px;box-shadow:0 30px 50px -20px #000}
.album{background:#7d5a3c url() ;background:repeating-linear-gradient(90deg,rgba(0,0,0,.03) 0 2px,transparent 2px 5px),#6f4f36;color:#f3e6cf}
.album h2,.sheet h2,.notebook h2{margin:0 0 4px;font-weight:normal;font-size:26px;letter-spacing:2px}
.album small{font-size:15px;opacity:.8}.hand{font-size:15px;margin:2px 0 8px;opacity:.85;line-height:1.5}
.tabs{display:flex;gap:6px;margin-bottom:6px}
#dexGrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(78px,1fr));gap:12px;overflow-y:auto;flex:1;min-height:0;padding:10px 6px;background:#efe3cc;color:var(--ink)}
#dexGrid div{aspect-ratio:4/5;position:relative;background:#fffaf0;display:flex;align-items:center;justify-content:center;padding:6px;outline:3px dotted #efe3cc;outline-offset:-1px;box-shadow:0 1px 2px rgba(0,0,0,.25);transform:rotate(var(--r,0deg))}
#dexGrid img{max-width:86%;max-height:72%}#dexGrid span{position:absolute;bottom:3px;left:0;right:0;text-align:center;font-size:11px;color:var(--ink2)}
#dexGrid .no{background:transparent;border:1.5px dashed #b49a7c;filter:none}#dexGrid .no img{display:none}#dexGrid .no::after{content:"还没遇见";font-size:12px;color:#a88f72}
.album .close,.sheet .close,.notebook .close{align-self:flex-end;margin-top:10px}
.sheet{background:#fbf8f2;color:var(--ink)}
#stTray{display:flex;gap:10px;flex-wrap:wrap;padding:10px;background:#f1ece2;border:1px solid #e1d8c8}
#stTray img{width:52px;height:52px;cursor:pointer;filter:drop-shadow(0 0 0 #fff) drop-shadow(1px 0 0 #fff) drop-shadow(-1px 0 0 #fff) drop-shadow(0 1px 0 #fff) drop-shadow(0 -1px 0 #fff) drop-shadow(0 2px 2px rgba(0,0,0,.25))}
#stTray .lock{filter:grayscale(1) brightness(1.5) opacity(.25);cursor:default}
#stBoard{position:relative;flex:1;min-height:260px;margin:10px 0 0;background:repeating-linear-gradient(0deg,transparent 0 31px,#e7dccb 31px 32px),#fffdf8;touch-action:none;overflow:hidden;border:1px solid #e1d8c8}
#stBoard img{position:absolute;width:68px;cursor:move;touch-action:none;filter:drop-shadow(2px 0 0 #fff) drop-shadow(-2px 0 0 #fff) drop-shadow(0 2px 0 #fff) drop-shadow(0 -2px 0 #fff) drop-shadow(1px 3px 3px rgba(0,0,0,.3))}
.row{display:flex;justify-content:space-between;align-items:center}
.notebook{background:repeating-linear-gradient(0deg,transparent 0 33px,#cfd8e6 33px 34px),#fbf7ec;padding-left:46px;color:var(--ink)}
.notebook::before{content:"";position:absolute;left:30px;top:0;bottom:0;width:1.5px;background:#d9a0a0}
#eggList{list-style:none;padding:0;margin:8px 0;overflow:auto;font-size:17px;line-height:34px}#eggList .dim{color:#b8a690}
@media (max-width:760px){.album,.sheet,.notebook{width:100%;height:100%;max-height:none;padding:calc(18px + env(safe-area-inset-top)) 14px calc(14px + env(safe-area-inset-bottom)) 14px}.notebook{padding-left:44px}
 #dexGrid{grid-template-columns:repeat(auto-fill,minmax(70px,1fr))}}
#guide{pointer-events:none}#guide .sticky{pointer-events:auto}
@media (max-height:520px){.album,.sheet,.notebook{height:100%;max-height:none;width:100%;padding:10px 16px;overflow:auto}#stBoard{min-height:110px}#stTray img{width:40px;height:40px}.hand{margin:0 0 4px}.album h2,.sheet h2,.notebook h2{font-size:20px}
 #note{bottom:calc(8px + env(safe-area-inset-bottom));width:min(420px,50%);font-size:15px;padding:6px 14px}.side{bottom:8px}#pageNo{bottom:14px}}