*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{height:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Helvetica Neue,Arial,sans-serif;background:#8e0a1f;display:flex;align-items:center;justify-content:center;user-select:none;-webkit-user-select:none}.bg{position:fixed;inset:0;background:radial-gradient(ellipse 90% 60% at 50% 0%,#d81e34,#b3152a 38%,#8e0a1f 70%,#6b0617);z-index:0}.bg:after{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 20% 30%,rgba(255,215,120,.1) 0 1.5px,transparent 1.6px),radial-gradient(circle at 70% 60%,rgba(255,215,120,.08) 0 1.2px,transparent 1.3px);background-size:120px 120px,90px 90px;opacity:.7}.vignette{position:fixed;inset:0;z-index:1;pointer-events:none;background:radial-gradient(ellipse 70% 60% at 50% 45%,transparent 40%,rgba(60,0,10,.45) 100%)}.stage{position:relative;z-index:2;width:100%;max-width:400px;padding:0 28px;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100%}#loading{display:flex;flex-direction:column;align-items:center;gap:26px;transition:opacity .35s ease,transform .35s ease}#loading.hidden{display:none}.spinner{width:52px;height:52px;position:relative}.spinner i{position:absolute;inset:0;border-radius:50%;border:2.5px solid rgba(255,215,120,.16);border-top-color:#ffd778;animation:spin .85s cubic-bezier(.6,.1,.4,.9) infinite}.spinner i:nth-child(2){animation-delay:.12s;inset:6px;border-top-color:#ffd7788c}@keyframes spin{to{transform:rotate(360deg)}}.load-txt{color:#ffe1b4d1;font-size:14px;letter-spacing:.14em}#pack{display:none;flex-direction:column;align-items:center;width:100%;perspective:1400px}#pack.show{display:flex}.envelope{position:relative;width:100%;max-width:290px;aspect-ratio:.74;border-radius:18px;cursor:pointer;transform-style:preserve-3d;animation:floatIn .7s cubic-bezier(.2,.9,.25,1.05) both}@keyframes floatIn{0%{opacity:0;transform:translateY(38px) scale(.92)}to{opacity:1;transform:none}}.env-body{position:absolute;inset:0;border-radius:18px;overflow:hidden;background:linear-gradient(168deg,#e5354a,#cf1f33 45%,#a80f22);box-shadow:0 28px 60px -14px #3c000cbf,0 0 0 1px #ffcd7838 inset,0 2px #ffffff1f inset}.env-body:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 118%,rgba(255,210,120,.3),transparent 62%),repeating-linear-gradient(90deg,rgba(255,255,255,.026) 0 1px,transparent 1px 7px);pointer-events:none}.flap{position:absolute;inset:0;transform-origin:top center;transform-style:preserve-3d;transition:transform .9s cubic-bezier(.5,0,.28,1),opacity .32s ease .5s;z-index:6}.flap-face{position:absolute;inset:0;border-radius:18px;background:linear-gradient(172deg,#ef4356,#d42339 40%,#b2132a);box-shadow:0 1px #ffffff1a inset}.flap-face:before{content:"";position:absolute;left:0;right:0;top:56%;height:40px;background:linear-gradient(180deg,#73000e00,#73000e24 46%,#ffdea412 54%,#73000e00);pointer-events:none}.flap-face:after{content:"";position:absolute;left:0;right:0;bottom:0;height:96px;background:linear-gradient(180deg,#78000f00,#6e000e4d);border-radius:0 0 18px 18px}.flap-edge{position:absolute;left:14px;right:14px;bottom:-1px;height:2px;background:linear-gradient(90deg,transparent,rgba(255,208,120,.5),transparent)}.seal{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);width:104px;height:104px;border-radius:50%;background:radial-gradient(circle at 38% 32%,#ffe9b0,#f5c85c 34%,#d9a33a 66%,#b8832a);box-shadow:0 8px 22px -6px #5a32008c,0 0 0 1px #fff0c899 inset,0 -3px 10px #ffffff59 inset;display:flex;align-items:center;justify-content:center;transition:transform .5s cubic-bezier(.4,0,.2,1),opacity .4s ease}.seal .fu{font-family:STKaiti,KaiTi,Songti SC,serif;font-size:52px;font-weight:700;color:#8b1a12;text-shadow:0 1px 0 rgba(255,240,200,.75),0 -1px 1px rgba(120,60,0,.35);transform:rotate(-3deg);line-height:1}.seal:after{content:"";position:absolute;inset:9px;border-radius:50%;border:1.5px dashed rgba(139,26,18,.32)}.tap-hint{position:absolute;left:0;right:0;bottom:13%;text-align:center;z-index:7;color:#ffe8beeb;font-size:15px;letter-spacing:.32em;font-weight:500;animation:breathe 1.9s ease-in-out infinite}@keyframes breathe{0%,to{opacity:.55;transform:translateY(0)}50%{opacity:1;transform:translateY(-3px)}}.amount-zone{position:absolute;inset:0;z-index:3;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;opacity:0;transition:opacity .45s ease .5s}.amount-zone.reveal{opacity:1}.amt-label{font-size:13px;color:#ffdeaac7;letter-spacing:.24em}.amt{display:flex;align-items:baseline;gap:2px;font-family:DIN Alternate,Helvetica Neue,Arial,sans-serif}.amt .cur{font-size:26px;color:#ffe6a8;font-weight:500;transform:translateY(-6px)}.amt .int{font-size:68px;color:#fff3cf;font-weight:700;line-height:1;text-shadow:0 2px 14px rgba(255,190,90,.5),0 1px 0 rgba(255,255,255,.4)}.amt .dec{font-size:26px;color:#ffe6a8;font-weight:500}.amt-note{font-size:12.5px;color:#ffd7a0a8;letter-spacing:.06em}.envelope.opening .env-body{background:linear-gradient(168deg,#d02840,#a5122a 46%,#7c0619);box-shadow:0 28px 60px -14px #3c000ccc,0 0 0 1px #ffcd784d inset,0 0 46px #ffbe5a29 inset}.envelope.opening .flap{transform:rotateX(-176deg);opacity:0}.envelope.opening .seal{transform:translate(-50%,-160%) scale(.55);opacity:0}.envelope.opening .tap-hint{opacity:0;animation:none}.glow{position:absolute;left:50%;top:52%;width:0;height:0;z-index:2;pointer-events:none}.glow.on:before{content:"";position:absolute;left:0;top:0;width:280px;height:280px;margin:-140px 0 0 -140px;border-radius:50%;background:radial-gradient(circle,rgba(255,225,150,.85) 0%,rgba(255,190,80,.35) 32%,transparent 66%);animation:burst .9s cubic-bezier(.15,.8,.3,1) forwards}@keyframes burst{0%{transform:scale(.15);opacity:0}38%{opacity:1}to{transform:scale(2.6);opacity:0}}.coin{position:absolute;z-index:5;width:11px;height:11px;border-radius:50%;background:radial-gradient(circle at 34% 30%,#fff2c4,#f2c65a 52%,#c99628);box-shadow:0 0 8px #ffcd6ebf;pointer-events:none;opacity:0}@keyframes fly{0%{opacity:0;transform:translate(0) scale(.4)}18%{opacity:1}to{opacity:0;transform:translate(var(--dx),var(--dy)) scale(.85) rotate(var(--rt))}}#result{display:none;margin-top:30px;width:100%;text-align:center}#result.show{display:block;animation:floatIn .5s ease both}.res-card{background:#ffffff12;border:1px solid rgba(255,215,140,.24);border-radius:14px;padding:16px 18px;backdrop-filter:blur(8px)}.res-title{font-size:15px;color:#ffe8b8;font-weight:600;margin-bottom:6px;letter-spacing:.04em}.res-sub{font-size:12.5px;color:#ffe1b4ad;line-height:1.65}.res-sub b{color:#ffd778}#error{display:none;flex-direction:column;align-items:center;gap:18px;text-align:center}#error.show{display:flex;animation:floatIn .5s ease both}.err-icon{width:64px;height:64px;border-radius:50%;border:1.5px solid rgba(255,205,140,.4);display:flex;align-items:center;justify-content:center;font-size:30px;color:#ffd18a}.err-msg{color:#ffe8c3eb;font-size:15px;line-height:1.7;max-width:280px}.err-code{margin-top:4px;font-size:12px;color:#ffd7a080;letter-spacing:.05em}.foot{position:fixed;bottom:calc(22px + env(safe-area-inset-bottom));left:0;right:0;text-align:center;font-size:11.5px;color:#ffd7a06b;letter-spacing:.12em;z-index:3}@media (prefers-reduced-motion:reduce){.envelope,.load-txt,.tap-hint{animation:none!important}.flap{transition-duration:.25s}}