@font-face{font-family:"WenKai";src:url(assets/font/wenkai.woff2) format("woff2");font-display:swap}

:root{--ink:#5b3a29;--ink-soft:#9a7660;--accent:#e46a80;--gold:#ffd27a}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%;overflow:hidden;overscroll-behavior:none;background:#120f2a}
body{font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);
  -webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-font-smoothing:antialiased;transition:color 2.5s}
body.dark{--ink:#fdf1dc;--ink-soft:#bdb6d6;--accent:#ffd27a;color:#fdf1dc}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0}
img{display:block}
h1,h2,b{font-weight:normal}
.hand{font-family:"WenKai","Kaiti SC","STKaiti","KaiTi",serif}
.ic{width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;vertical-align:-.14em;overflow:visible}

/* ================= 天空 ================= */
#sky{position:fixed;inset:0;z-index:0;overflow:hidden}
#sky>div{position:absolute;inset:0;transition:opacity 3s ease}
.sky-dawn{background:radial-gradient(120% 60% at 50% 110%,#6b3f6e 0%,#2c2456 45%,#120f2a 100%)}
.sky-day{opacity:0;background:linear-gradient(180deg,#ffd3b8 0%,#ffe8d8 40%,#fff7ee 100%)}
.sky-night{opacity:0;background:radial-gradient(120% 80% at 50% 0%,#2a3170 0%,#151b46 45%,#090c26 100%)}
body[data-sky=day] .sky-day,body[data-sky=night] .sky-night{opacity:1}
body[data-sky=day] .sky-dawn,body[data-sky=night] .sky-dawn{opacity:0}
#sky .sun{inset:auto;top:6%;left:50%;width:160px;height:160px;margin-left:-80px;border-radius:50%;
  background:radial-gradient(circle,#fff7dc 0%,#ffd27a 34%,rgba(255,190,110,.35) 56%,rgba(255,190,110,0) 72%);
  transform:translateY(75vh) scale(.7);opacity:0;transition:transform 3.4s cubic-bezier(.3,.7,.3,1),opacity 2.4s}
body[data-sky=day] #sky .sun{transform:none;opacity:1}
body[data-sky=night] #sky .sun{transform:translateY(85vh) scale(.8);opacity:0;transition:transform 3.4s cubic-bezier(.6,0,.7,1),opacity 2.4s}
#sky .moon{inset:auto;top:8%;right:15%;width:44px;height:44px;border-radius:50%;box-shadow:-10px 6px 0 0 #fff0c2;
  transform:rotate(-20deg) translateY(50px);opacity:0;transition:opacity 3s 1.5s,transform 3.5s 1.5s;filter:drop-shadow(0 0 14px rgba(255,236,170,.65))}
body[data-sky=night] #sky .moon{opacity:1;transform:rotate(-20deg)}
#bg,#fx{position:fixed;inset:0;width:100%;height:100%;pointer-events:none}
#bg{z-index:1}
#fx{z-index:50}

/* 遮罩：许愿时只留烛光，吹灭后全黑 */
#dimmer{position:fixed;inset:0;z-index:20;pointer-events:none;opacity:0;transition:opacity .9s;
  background:radial-gradient(circle at 50% var(--cy,50%),rgba(12,6,20,0) 0,rgba(12,6,20,0) 95px,rgba(12,6,20,.88) 230px)}
#dimmer.on{opacity:1}
#dimmer.black{opacity:1;background:#05040c;transition:opacity 1.3s}
#dimmer.lift{opacity:0;background:#05040c;transition:opacity 2.8s ease}
#flash{position:fixed;inset:0;z-index:45;pointer-events:none;opacity:0;background:radial-gradient(circle at 50% 55%,#fffbe8,#ffe3b8 60%,#ffd2a6)}
#flash.go{animation:flash 2.2s ease forwards}

/* ================= 框架 ================= */
#app{position:relative;z-index:2;max-width:430px;height:100vh;height:100dvh;margin:0 auto}
.dots{position:absolute;top:calc(18px + env(safe-area-inset-top));left:0;right:0;display:flex;justify-content:center;gap:7px;z-index:5;transition:opacity .8s}
.dots i{width:6px;height:6px;border-radius:3px;background:currentColor;opacity:.22;transition:all .5s}
.dots i.on{width:18px;opacity:.7}
.dots.hide{opacity:0}
.stage{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:56px 22px 92px;text-align:center;
  opacity:0;visibility:hidden;transform:scale(1.03);transition:opacity .9s,transform 1.1s,visibility 0s .9s}
.stage.active{opacity:1;visibility:visible;transform:none;transition:opacity .9s .15s,transform 1.1s .15s}
.stage [data-r]{opacity:0}
.stage.active [data-r]{animation:rise 1.1s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(var(--r,0) * .16s + .35s)}
.eyebrow{font-size:11px;letter-spacing:.42em;color:var(--ink-soft);margin-bottom:8px}
.title{font-size:32px;line-height:1.35;min-height:1.35em}
.title .c{display:inline-block;opacity:0;transform:translateY(14px) scale(.85);filter:blur(4px);animation:charIn .8s cubic-bezier(.2,.8,.2,1) forwards}
.title .ic{color:var(--gold);font-size:.86em;margin-left:.15em}
.hint{margin-top:22px;font-size:13px;letter-spacing:.12em;line-height:1.9;padding:8px 18px;border-radius:999px;background:rgba(255,255,255,.5);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:opacity .5s}
.hint:empty{visibility:hidden}
.hint b{color:var(--accent);font-weight:600}
body.dark .hint{background:rgba(255,255,255,.09)}
.hint.pulse{animation:pulse 2.4s ease-in-out infinite}
.btn{margin-top:22px;padding:12px 30px;border-radius:999px;border:1px solid currentColor;background:rgba(255,255,255,.5);font-size:14px;letter-spacing:.2em;
  opacity:0;transform:translateY(10px);pointer-events:none;transition:opacity .7s,transform .7s,background .3s}
body.dark .btn{background:rgba(255,255,255,.08)}
.btn.show{opacity:1;transform:none;pointer-events:auto}
.btn:active{transform:scale(.95)}
.btn.ghost{margin-top:6px;border-color:transparent;font-size:13px;color:var(--ink-soft)}
body.dark .btn.ghost{background:none}

/* 音乐按钮 */
#music{position:fixed;top:calc(12px + env(safe-area-inset-top));right:14px;z-index:55;width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;font-size:18px;background:rgba(255,255,255,.35);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  opacity:0;pointer-events:none;transition:opacity .8s,background .3s}
body.dark #music{background:rgba(255,255,255,.1)}
#music.show{opacity:1;pointer-events:auto}
#music.playing .ic{animation:sway 2.4s ease-in-out infinite}
#music .slash{opacity:0;transition:opacity .3s}
#music.muted .slash{opacity:1}
#music.muted{opacity:.6}

/* ================= 0 开场 ================= */
.intro-date{font-size:13px;letter-spacing:.6em;color:var(--ink-soft);margin-bottom:6px}
.intro-clock{font-size:64px;font-weight:200;line-height:1.15;letter-spacing:.04em;font-variant-numeric:tabular-nums;color:#fff3dc;
  text-shadow:0 0 26px rgba(255,210,150,.35);margin-bottom:18px}
.intro-clock span{display:inline-block;margin:0 .04em;animation:blink 1s steps(1) infinite}
.intro-title{font-size:29px;line-height:1.65}
.intro-first{font-size:15px;letter-spacing:.2em;color:var(--ink-soft);margin-top:16px}
/* "让今天放晴"：点一下，小太阳展开成日出 */
.sun-btn{margin-top:44px;display:inline-flex;align-items:center;gap:10px;padding:11px 22px 11px 14px;border-radius:999px;font-size:16px;letter-spacing:.12em;
  color:#fdf1dc;border:1px solid rgba(255,225,170,.45);background:rgba(255,255,255,.07);box-shadow:0 0 34px rgba(255,200,120,.18);
  animation:pulse 2.6s ease-in-out infinite;transition:color .5s,border-color .5s,background .5s,box-shadow .5s}
.sun-ic{display:grid;place-items:center;width:30px;height:30px;font-size:26px;color:#ffd27a;filter:drop-shadow(0 0 8px rgba(255,200,110,.85))}
.sun-ic .ic{animation:spin 16s linear infinite}
.sun-btn.go{animation:none;color:transparent;border-color:transparent;background:none;box-shadow:none}
.sun-btn.go .sun-ic{transform:scale(30);opacity:0;transition:transform 1.7s cubic-bezier(.6,0,.4,1),opacity 1.4s .35s}

/* ================= 1 礼物 ================= */
.gift-area{position:relative;width:240px;height:min(370px,46vh);margin-top:14px}
.gift{position:absolute;left:20px;bottom:0;width:200px;height:200px;cursor:pointer;transform-origin:50% 100%;z-index:3;transition:transform 1.4s cubic-bezier(.3,.8,.3,1)}
.gift.open{transform:translateY(14px) scale(.9)}
.gift.idle{animation:bob 2.6s ease-in-out infinite}
.gift.squash{animation:squash .42s cubic-bezier(.3,1.6,.5,1)}
.gift .box,.gift .lid{--dots:radial-gradient(circle,rgba(255,255,255,.55) 2.3px,transparent 2.8px)}
.gift .box{position:absolute;left:20px;bottom:0;width:160px;height:118px;border-radius:6px 6px 14px 14px;z-index:3;
  background:var(--dots) 0 0/20px 20px,var(--dots) 10px 10px/20px 20px,linear-gradient(160deg,#ffa3b3,#ec6f88);
  box-shadow:0 22px 32px -12px rgba(200,80,100,.55),inset 0 -14px 22px rgba(0,0,0,.1),inset 0 10px 10px -6px rgba(0,0,0,.12)}
.gift .lid{position:absolute;left:10px;bottom:110px;width:180px;height:40px;border-radius:8px;z-index:4;
  background:var(--dots) 4px 4px/20px 20px,var(--dots) 14px 14px/20px 20px,linear-gradient(160deg,#ffb9c5,#f4849b);
  box-shadow:0 6px 10px -4px rgba(0,0,0,.2),inset 0 2px 0 rgba(255,255,255,.45),inset 0 -3px 0 rgba(0,0,0,.06);
  transition:transform 1.1s cubic-bezier(.2,1.25,.4,1),opacity .7s .55s}
.gift .box::before,.gift .lid::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:24px;margin-left:-12px;
  background:linear-gradient(90deg,#f0a530,#ffd77a 35%,#ffc24d 65%,#eda332);box-shadow:0 0 0 1px rgba(200,120,20,.08)}
.gift.untied:not(.open) .lid{animation:jiggle .32s ease-in-out infinite alternate}
.gift.open .lid{transform:translate(110px,-210px) rotate(48deg);opacity:0}
.tag{position:absolute;right:-18px;top:14px;height:24px;padding:0 8px 0 15px;border-radius:3px 9px 9px 3px;background:#fffaf2;color:#b0624f;font-size:12px;
  line-height:24px;white-space:nowrap;transform:rotate(16deg);transform-origin:0 50%;box-shadow:0 2px 5px rgba(0,0,0,.18);z-index:2}
.tag::before{content:"";position:absolute;left:5px;top:50%;width:5px;height:5px;margin-top:-2.5px;border-radius:50%;background:#e8c7b4}
.tag::after{content:"";position:absolute;left:-14px;top:50%;width:18px;height:1px;background:#d9a35a;transform:rotate(-24deg);transform-origin:right}
.bow{position:absolute;left:50%;bottom:112px;width:124px;height:83px;margin-left:-62px;z-index:5;overflow:visible;filter:drop-shadow(0 3px 3px rgba(150,80,20,.25))}
.bow path{fill:#ffbf45}
.bow .sh{fill:#e9992a;opacity:.55}
.bow .tails path{fill:#f3a935}
.bow .knot{fill:#ffb02e}
.bow g,.bow .knot{transform-box:fill-box;transition:transform .75s cubic-bezier(.5,-.45,.6,1),opacity .5s .25s}
.bow .l{transform-origin:right center}
.bow .r{transform-origin:left center}
.bow .knot{transform-origin:center}
.gift.untied .bow .l{transform:translate(-55px,45px) rotate(-120deg);opacity:0}
.gift.untied .bow .r{transform:translate(55px,45px) rotate(120deg);opacity:0}
.gift.untied .bow .tails{transform:translateY(60px);opacity:0}
.gift.untied .bow .knot{transform:scale(0);opacity:0}
.gift .beam{position:absolute;left:36px;right:36px;bottom:110px;height:0;z-index:1;border-radius:50% 50% 0 0;
  background:linear-gradient(0deg,rgba(255,240,190,.95),rgba(255,240,190,0));filter:blur(8px);transition:height 1.4s .15s,opacity 2s 2.2s}
.gift.open .beam{height:300px;opacity:.55}
.gift-photo{position:absolute;left:50%;bottom:62px;width:min(134px,18vh);margin-left:calc(min(134px,18vh) / -2);padding:8px 8px 10px;background:#fffaf2;border-radius:3px;z-index:2;
  box-shadow:0 14px 30px rgba(120,60,40,.3);transform:translateY(0) scale(.4);opacity:0;
  transition:transform 1.6s cubic-bezier(.2,1.05,.3,1) .45s,opacity .6s .45s}
.gift-area.open .gift-photo{transform:translateY(calc(-1 * min(96px,10vh))) rotate(-4deg);opacity:1;animation:floaty 5s ease-in-out 2.2s infinite}
.gift-photo .ph{aspect-ratio:4/5}
.gift-photo p{font-size:13px;color:#8a6650;margin-top:6px}

/* ================= 2 蛋糕 ================= */
.cake-wrap{position:relative;width:260px;height:250px;margin-top:14px;touch-action:none;z-index:2;transition:filter 3s}
body[data-sky=night] .cake-wrap{filter:brightness(.72) saturate(.9)}
.cake-glow{position:absolute;left:50%;top:-30px;width:340px;height:260px;margin-left:-170px;
  background:radial-gradient(closest-side,rgba(255,200,110,.6),rgba(255,200,110,0));animation:glow 2.2s ease-in-out infinite;transition:opacity 1s}
.cake-wrap.out .cake-glow{opacity:0}
.plate{position:absolute;left:50%;bottom:8px;width:250px;height:24px;margin-left:-125px;border-radius:50%;background:linear-gradient(#fff,#f2ece8);box-shadow:0 10px 20px -6px rgba(0,0,0,.25)}
.tier{position:absolute;left:50%;border-radius:12px 12px 10px 10px;overflow:hidden}
.tier::before{content:"";position:absolute;left:0;right:0;top:0;height:20px;
  background:radial-gradient(circle at 10px 8px,#fff 8px,transparent 9px) 0 0/20px 20px repeat-x,linear-gradient(#fff,#fff) 0 0/100% 8px no-repeat}
.tier::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.06),transparent 20%,transparent 75%,rgba(0,0,0,.08))}
.t1{bottom:20px;width:210px;height:76px;margin-left:-105px;background:linear-gradient(180deg,#f8c9a8,#eeae88)}
.t2{bottom:92px;width:160px;height:62px;margin-left:-80px;background:linear-gradient(180deg,#fff2e7,#fbdac8)}
.berries{position:absolute;left:0;right:0;top:12px;display:flex;justify-content:space-around;padding:0 14px;z-index:1}
.berries i{width:12px;height:12px;border-radius:50% 50% 45% 45%;background:radial-gradient(circle at 35% 30%,#ff8a9a,#d9364f);box-shadow:0 2px 2px rgba(0,0,0,.15)}
.cake-txt{position:absolute;left:0;right:0;bottom:14px;font-size:17px;color:#fff;letter-spacing:.06em;text-shadow:0 1px 2px rgba(150,70,40,.45);z-index:1}
.candles{position:absolute;bottom:152px;left:50%;transform:translateX(-50%);display:flex;gap:14px}
.candle{position:relative;width:10px;height:44px;border-radius:3px;background:repeating-linear-gradient(-45deg,#fff 0 5px,#ff9fb0 5px 10px);box-shadow:inset -2px 0 0 rgba(0,0,0,.06)}
.candle::before{content:"";position:absolute;left:50%;top:-5px;width:2px;height:6px;margin-left:-1px;background:#4a3a30;border-radius:1px}
.flame{position:absolute;left:50%;bottom:100%;width:16px;height:28px;margin:0 0 4px -8px;border-radius:50% 50% 50% 50%/60% 60% 40% 40%;
  background:radial-gradient(ellipse at 50% 76%,#fffbe8 0 16%,#ffd45c 40%,#ff9a3d 68%,rgba(255,120,40,0) 72%);
  box-shadow:0 0 22px 8px rgba(255,190,90,.45);transform-origin:50% 100%;animation:flicker .13s ease-in-out infinite alternate;transition:transform .4s,opacity .4s}
.flame::after{content:"";position:absolute;inset:-16px -14px}
.candle.lean .flame{animation:lean .5s ease-out forwards}
.candle.out .flame{opacity:0;transform:scale(.1) translateY(6px);animation:none}
#ring{position:absolute;left:50%;top:50%;width:170px;height:170px;margin:-85px 0 0 -85px;transform:rotate(-90deg);pointer-events:none;opacity:0;transition:opacity .4s;overflow:visible;z-index:21}
#ring.on{opacity:1}
#ring circle{fill:none;stroke:#fff3cf;stroke-width:2.5;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1;filter:drop-shadow(0 0 6px #ffd27a)}
.wish-text{position:fixed;left:0;right:0;top:62vh;z-index:22;text-align:center;color:#fdf1dc;font-size:22px;letter-spacing:.2em;opacity:0;transition:opacity .8s;pointer-events:none}
.wish-text.on{opacity:1}
.wish-orb{position:fixed;z-index:23;width:14px;height:14px;margin:-7px 0 0 -7px;border-radius:50%;background:#fff6d8;pointer-events:none;
  box-shadow:0 0 14px 6px rgba(255,220,150,.8),0 0 40px 16px rgba(255,190,120,.35);animation:wishUp 2.4s cubic-bezier(.4,0,.6,1) forwards}

/* ================= 3 星空 ================= */
.heart{position:relative;width:min(86vw,340px);aspect-ratio:1/1;margin-top:6px}
.heart svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.heart polyline{fill:none;stroke:rgba(255,226,160,.9);stroke-width:.45;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:1;transition:stroke-dashoffset 1.2s ease}
.heart polyline.on{stroke-dashoffset:0}
.heart .fill{fill:rgba(255,215,140,0);transition:fill 2.5s}
.heart.done .fill{fill:rgba(255,215,140,.14)}
.heart.done{animation:beat 1.6s ease-in-out infinite}
.mstar{position:absolute;width:48px;height:48px;margin:-24px 0 0 -24px;display:grid;place-items:center}
.mstar .core{width:16px;height:16px;background:#fff6dc;opacity:.55;transition:all .6s cubic-bezier(.3,1.5,.5,1);
  clip-path:polygon(50% 0,61% 38%,100% 50%,61% 62%,50% 100%,39% 62%,0 50%,39% 38%);animation:twinkle 2s ease-in-out infinite;animation-delay:var(--d)}
.mstar .halo{position:absolute;width:44px;height:44px;border-radius:50%;background:radial-gradient(rgba(255,226,150,.6),transparent 68%);opacity:0;transition:opacity .6s}
.mstar .ring{position:absolute;width:20px;height:20px;border-radius:50%;border:1.5px solid #ffe7a8;opacity:0}
.mstar.lit .core{width:30px;height:30px;opacity:1;background:#ffe08a;animation:none}
.mstar.lit .halo{opacity:1}
.mstar.flash .ring{animation:ringOut .9s ease-out}
.mstar.hidden .core{opacity:0}
.heart-center{position:absolute;left:0;right:0;top:36%;pointer-events:none}
.heart-center .title{font-size:26px;margin-top:6px}
.counter{font-size:12px;letter-spacing:.3em;color:var(--ink-soft)}

/* 拍立得：正面照片，点一下翻到背面看字 */
.modal{position:fixed;inset:0;z-index:40;display:grid;place-items:center;padding:24px;background:rgba(8,10,30,.6);
  -webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);opacity:0;visibility:hidden;transition:opacity .5s,visibility 0s .5s}
.modal.show{opacity:1;visibility:visible;transition:opacity .5s}
.pol{width:min(76vw,290px);display:flex;flex-direction:column;align-items:center;will-change:transform}
.card3d{position:relative;width:100%;cursor:pointer;-webkit-transform-style:preserve-3d;transform-style:preserve-3d;
  transform:perspective(1100px) rotateY(0deg) rotate(-2deg);transition:transform .9s cubic-bezier(.3,1.15,.4,1)}
.card3d.flipped{transform:perspective(1100px) rotateY(180deg) rotate(2deg)}
.card3d.tease{animation:tease 1.2s ease-in-out}
.face{background:#fffaf2;color:#5b3a29;border-radius:4px;box-shadow:0 24px 50px rgba(0,0,0,.5);-webkit-backface-visibility:hidden;backface-visibility:hidden}
.front{padding:12px 12px 12px;text-align:center}
.front .ph{aspect-ratio:4/5}
.p-date{margin-top:10px;font-size:12px;letter-spacing:.3em;color:#a3846c}
.p-flip{margin-top:4px;font-size:12px;color:#c0a28b;letter-spacing:.08em}
.back{position:absolute;inset:0;transform:rotateY(180deg);padding:30px 24px 24px;display:flex;flex-direction:column;text-align:left;
  background:#fffaf2 repeating-linear-gradient(transparent 0 35px,rgba(200,170,130,.24) 35px 36px);background-position:0 64px}
.b-date{font-size:12px;letter-spacing:.25em;color:#b39580;text-align:right;height:34px}
.b-text{flex:1;font-size:21px;line-height:36px;padding-top:2px}
.b-sign{text-align:right;font-size:16px;color:#8a6650;display:flex;align-items:center;justify-content:flex-end;gap:6px}
.b-sign .ic{color:#e2707f;font-size:18px}
.p-btn{margin-top:22px;padding:10px 26px;border-radius:999px;border:1px solid rgba(255,255,255,.4);background:rgba(255,255,255,.1);font-size:14px;letter-spacing:.15em;color:#fdf1dc}
.ph{position:relative;overflow:hidden;border-radius:2px;background:#eadfd2}
.ph img{width:100%;height:100%;object-fit:cover}
.ph .fallback{position:absolute;inset:0;display:none;place-items:center;font-size:40px;color:rgba(255,255,255,.85)}
.ph.missing img{display:none}
.ph.missing .fallback{display:grid}
.ph.develop img{filter:brightness(1.9) contrast(.35) sepia(.5) blur(5px)}
.ph.developed img{filter:none;transition:filter 3.2s cubic-bezier(.3,.6,.3,1)}

/* ================= 4 信 ================= */
.env{position:relative;width:290px;height:186px;margin-top:130px;perspective:900px;transition:transform .8s cubic-bezier(.5,0,.7,.4),opacity .6s}
.env.away{transform:translateY(60px) scale(.9);opacity:0}
.env-back{position:absolute;inset:0;background:#e3cba8;border-radius:8px;box-shadow:0 24px 46px rgba(0,0,0,.45)}
.paper{position:absolute;left:14px;right:14px;top:10px;height:166px;z-index:1;border-radius:4px;
  background:repeating-linear-gradient(#fffaf0 0 22px,#f1e4cf 22px 23px);transition:transform 1.1s .55s cubic-bezier(.3,1,.4,1)}
.env.open .paper{transform:translateY(-125px)}
.env-front{position:absolute;inset:0;z-index:2;border-radius:8px;background:linear-gradient(160deg,#f3dfc3,#e4c8a2);clip-path:polygon(0 0,50% 54%,100% 0,100% 100%,0 100%)}
/* 封口和火漆印是一体的：点印章，整个封口带着完好的印章一起掀开 */
.flap-wrap{position:absolute;left:0;right:0;top:0;height:116px;z-index:3;transform-origin:top;-webkit-transform-style:preserve-3d;transform-style:preserve-3d;
  transition:transform 1s cubic-bezier(.5,0,.3,1),z-index 0s .5s}
.env.open .flap-wrap{transform:rotateX(180deg);z-index:0}
.flap{position:absolute;inset:0;background:linear-gradient(180deg,#f1dabb,#dcbd95);clip-path:polygon(0 0,100% 0,50% 100%)}
.stamp{position:absolute;right:14px;bottom:14px;width:52px;height:62px;z-index:3;padding:4px;background:#fffaf2;transform:rotate(4deg);
  --perf:radial-gradient(circle at 3px 3px,transparent 2.2px,#000 2.6px) -3px -3px/6px 6px,linear-gradient(#000,#000) 3px 3px/calc(100% - 6px) calc(100% - 6px) no-repeat;
  -webkit-mask:var(--perf);mask:var(--perf);box-shadow:0 1px 2px rgba(0,0,0,.15)}
.stamp img{width:100%;height:100%;object-fit:cover}
.postmark{position:absolute;right:46px;bottom:30px;width:64px;height:64px;z-index:3;opacity:.55;transform:rotate(-14deg);pointer-events:none}
.to-line{position:absolute;left:22px;bottom:22px;z-index:3;font-size:15px;color:#8a6650;text-align:left;line-height:1.5}
.seal{position:absolute;left:50%;top:87px;width:58px;height:58px;margin-left:-29px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#ea6474,#a82a3a);color:#ffe6c9;display:grid;place-items:center;font-size:23px;
  box-shadow:0 4px 10px rgba(0,0,0,.35),inset 0 0 0 4px rgba(255,255,255,.13),inset 0 0 0 8px rgba(120,20,30,.22);
  -webkit-backface-visibility:hidden;backface-visibility:hidden;transition:transform .4s cubic-bezier(.3,1.6,.5,1),box-shadow .4s}
.seal.idle{animation:pulse 2s ease-in-out infinite}
.seal.press{transform:scale(1.12);box-shadow:0 0 24px 8px rgba(255,190,150,.55),inset 0 0 0 4px rgba(255,255,255,.22),inset 0 0 0 8px rgba(120,20,30,.22)}

.letter-view{position:fixed;inset:0;z-index:30;display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;visibility:hidden;
  transition:opacity .6s,visibility 0s .6s;background:rgba(8,10,30,.4)}
.letter-view.show{opacity:1;visibility:visible;transition:opacity .6s}
/* 信纸：两道折痕，展开动画 */
.sheet{position:relative;width:min(88vw,380px);max-height:80vh;overflow:auto;-webkit-overflow-scrolling:touch;color:#5b3a29;border-radius:4px;padding:22px 22px 20px;text-align:left;
  background:#fffaf0 linear-gradient(180deg,transparent calc(33.3% - 8px),rgba(150,110,70,.08) 33.3%,rgba(255,255,255,.5) calc(33.3% + 1px),transparent calc(33.3% + 8px),
    transparent calc(66.6% - 8px),rgba(150,110,70,.08) 66.6%,rgba(255,255,255,.5) calc(66.6% + 1px),transparent calc(66.6% + 8px));
  box-shadow:0 30px 60px rgba(0,0,0,.5);transform-origin:50% 0}
.letter-view.show .sheet{animation:unfold 1.3s cubic-bezier(.2,.9,.3,1) both}
#letter-body{background:repeating-linear-gradient(transparent 0 33px,rgba(200,170,130,.3) 33px 34px)}
#letter-body p{font-size:17.5px;line-height:34px;text-indent:2em}
#letter-body p:first-child{text-indent:0}
#letter-body .sign{text-indent:0;text-align:right;display:flex;align-items:flex-end;justify-content:flex-end;gap:2px;height:68px;padding-bottom:6px}
.sheet .ch{opacity:0;filter:blur(3px);transition:opacity .55s,filter .55s}
.sheet .ch.on{opacity:1;filter:none}
.sig{height:44px;overflow:visible}
.sig text{font-family:"WenKai",serif;font-size:32px;fill:transparent;stroke:#5b3a29;stroke-width:.7;stroke-dasharray:320;stroke-dashoffset:320}
.sig path{fill:none;stroke:#e2707f;stroke-width:1.6;stroke-linecap:round;stroke-dasharray:70;stroke-dashoffset:70}
.sig.draw text{animation:sigText 2s ease forwards}
.sig.draw path{animation:sigLine 1s ease 1.7s forwards}
.sheet .btn{display:block;margin:12px auto 0;color:#5b3a29;background:#fff3e2}
.voice{display:flex;align-items:center;gap:10px;padding:8px 14px 8px 8px;border-radius:999px;background:#f7e7d2;margin-bottom:14px;font-size:12px;
  font-family:-apple-system,"PingFang SC",sans-serif;color:#9a7660}
.voice .play{width:32px;height:32px;border-radius:50%;background:#e2707f;color:#fff;display:grid;place-items:center;font-size:11px;flex:none;box-shadow:0 3px 8px rgba(226,112,127,.4)}
.voice.empty{opacity:.6}
.bars{display:flex;align-items:center;gap:2.5px;height:24px;flex:1}
.bars i{flex:1;max-width:3px;border-radius:2px;background:#e3c2b2;transition:background .2s}
.bars i.on{background:#e2707f}

/* ================= 5 刮刮卡 ================= */
.cards{display:flex;flex-direction:column;gap:14px;width:min(86vw,340px);margin-top:18px}
.scard{position:relative;height:98px;border-radius:14px;background:#fff8ee;color:#5b3a29;overflow:hidden;box-shadow:0 10px 26px rgba(0,0,0,.38);
  display:flex;align-items:center;gap:14px;padding:0 18px;text-align:left}
.scard.final{height:116px;background:linear-gradient(135deg,#fff3d6,#ffe1e8)}
.badge{width:50px;height:50px;border-radius:50%;display:grid;place-items:center;font-size:26px;color:#d0705f;background:#ffeee4;flex:none;
  box-shadow:inset 0 0 0 1px rgba(208,112,95,.15)}
.final .badge{color:#c48a26;background:#fff3d2;box-shadow:inset 0 0 0 1px rgba(196,138,38,.2)}
.scard b{display:block;font-size:18px}
.scard span{font-size:13px;color:#a3846c}
.scard canvas{position:absolute;inset:0;width:100%;height:100%;z-index:1;touch-action:none;transition:opacity .9s}
.scard.revealed canvas{opacity:0;pointer-events:none}
.scard::after{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;transform:translateX(-120%);
  background:linear-gradient(105deg,transparent 30%,rgba(255,255,255,.75) 50%,transparent 70%)}
.scard.revealed::after{animation:sweep 1.2s .25s ease-out}
.scard.revealed{animation:pop .6s cubic-bezier(.3,1.6,.5,1)}
.scard .lock{position:absolute;inset:0;z-index:3;display:grid;place-items:center;background:rgba(28,28,55,.9);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  color:#e9e4ff;font-size:13px;letter-spacing:.2em;text-align:center;transition:opacity .7s .5s}
.lock .ic{font-size:28px;display:block;margin:0 auto 6px}
.lock .shackle{transform-box:fill-box;transform-origin:100% 100%;transition:transform .5s cubic-bezier(.3,1.6,.5,1)}
.scard:not(.locked) .lock{opacity:0;pointer-events:none}
.scard:not(.locked) .lock .shackle{transform:translateY(-3px) rotate(28deg)}
.scard.final{padding-right:92px}
/* 刮开最后一张后，"啪"地盖上一个印章 */
.paid{position:absolute;right:14px;top:50%;margin-top:-21px;padding:4px 10px;border:2.5px solid currentColor;border-radius:8px;color:#d4483b;
  font-size:18px;letter-spacing:.14em;line-height:28px;white-space:nowrap;box-shadow:inset 0 0 0 2px rgba(255,255,255,.6);mix-blend-mode:multiply;
  opacity:0;transform:rotate(-14deg) scale(2.4)}
.scard.revealed .paid{animation:stampIn .5s cubic-bezier(.5,0,.6,1) .9s forwards}

/* ================= 结尾 ================= */
.finale-photo{width:min(176px,44vw);padding:8px 8px 10px;background:#fffaf2;border-radius:3px;box-shadow:0 18px 40px rgba(0,0,0,.45);margin:22px 0 6px;transform:rotate(3deg)}
.finale-photo .ph{aspect-ratio:4/5}
.finale-photo p{font-size:13px;color:#8a6650;margin-top:6px;text-align:center}
.stage.active .finale-photo{animation:rise 1.4s cubic-bezier(.2,.8,.2,1) 1.6s both,floaty 6s ease-in-out 3s infinite}
.sub{font-size:18px;margin-top:10px;line-height:1.75}
.finale-sign{font-size:15px;margin-top:10px;color:var(--ink-soft)}

/* 纪念卡 */
.keep-view{position:fixed;inset:0;z-index:58;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:30px;
  background:rgba(5,6,20,.96);opacity:0;visibility:hidden;transition:opacity .5s,visibility 0s .5s}
.keep-view.show{opacity:1;visibility:visible;transition:opacity .5s}
.keep-view img{max-width:100%;max-height:72vh;border-radius:6px;box-shadow:0 20px 50px rgba(0,0,0,.6);-webkit-touch-callout:default;-webkit-user-select:auto;user-select:auto;
  transform:scale(.92);transition:transform .6s cubic-bezier(.3,1.3,.5,1)}
.keep-view.show img{transform:none}
.keep-view img{max-height:62vh}
.keep-view img.nudge{animation:pop .6s cubic-bezier(.3,1.6,.5,1)}
.keep-save{padding:13px 38px;border-radius:999px;background:linear-gradient(135deg,#ffe39a,#ffc95c);color:#4a3210;font-size:17px;letter-spacing:.25em;
  box-shadow:0 10px 28px rgba(255,200,110,.35);transition:transform .2s}
.keep-save:active{transform:scale(.95)}
.keep-hint{color:#e9e2f5;font-size:13px;letter-spacing:.2em;text-align:center;line-height:1.8}
.keep-hint.big{font-size:16px;color:#ffe39a;padding:10px 20px;border:1px solid rgba(255,227,154,.5);border-radius:999px}
.keep-hint.flash{animation:pulse .9s ease-in-out 2}
.keep-close{position:absolute;top:calc(14px + env(safe-area-inset-top));right:16px;width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;font-size:22px;line-height:1}

/* 开发用控制条（链接加 ?dev 才显示） */
.devbar{position:fixed;left:50%;bottom:calc(12px + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:60;display:flex;gap:6px;align-items:center;
  padding:5px 6px 5px 14px;border-radius:999px;background:rgba(30,30,40,.72);color:#fff;font-size:12px;white-space:nowrap;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.devbar button{background:rgba(255,255,255,.16);color:#fff;font-size:12px;padding:6px 11px;border-radius:999px}

@keyframes rise{from{opacity:0;transform:translateY(22px);filter:blur(6px)}to{opacity:1;transform:none;filter:none}}
@keyframes charIn{to{opacity:1;transform:none;filter:none}}
@keyframes flash{0%{opacity:0}25%{opacity:1}100%{opacity:0}}
@keyframes pulse{0%,100%{opacity:.82;transform:scale(1)}50%{opacity:1;transform:scale(1.03)}}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes squash{0%{transform:scale(1,1)}30%{transform:scale(1.12,.86)}60%{transform:scale(.94,1.1)}100%{transform:scale(1,1)}}
@keyframes jiggle{from{transform:rotate(-3deg)}to{transform:rotate(3deg) translateY(-4px)}}
@keyframes floaty{0%,100%{translate:0 0;rotate:0deg}50%{translate:0 -8px;rotate:1.5deg}}
@keyframes glow{0%,100%{opacity:.85;transform:scale(1)}50%{opacity:1;transform:scale(1.05)}}
@keyframes flicker{from{transform:scaleY(1) rotate(-2deg)}to{transform:scaleY(1.1) rotate(2deg)}}
@keyframes lean{to{transform:skewX(32deg) scaleY(.6) translateX(4px)}}
@keyframes wishUp{0%{transform:translate(0,0) scale(1);opacity:0}10%{opacity:1}100%{transform:translate(var(--wx,20px),-62vh) scale(.3);opacity:0}}
@keyframes twinkle{0%,100%{opacity:.4;transform:scale(.85)}50%{opacity:.95;transform:scale(1.12)}}
@keyframes ringOut{from{opacity:1;transform:scale(.6)}to{opacity:0;transform:scale(4)}}
@keyframes beat{0%,100%{transform:scale(1)}15%{transform:scale(1.04)}30%{transform:scale(1)}45%{transform:scale(1.03)}}
@keyframes tease{0%,100%{transform:perspective(1100px) rotateY(0deg) rotate(-2deg)}40%{transform:perspective(1100px) rotateY(-32deg) rotate(-2deg)}}
@keyframes unfold{0%{transform:perspective(900px) translateY(30px) rotateX(75deg) scaleY(.35);opacity:0}40%{opacity:1}100%{transform:none;opacity:1}}
@keyframes sigText{70%{stroke-dashoffset:0;fill:transparent}100%{stroke-dashoffset:0;fill:#5b3a29}}
@keyframes sigLine{to{stroke-dashoffset:0}}
@keyframes sway{0%,100%{transform:rotate(-8deg)}50%{transform:rotate(8deg)}}
@keyframes sweep{to{transform:translateX(120%)}}
@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.04)}100%{transform:scale(1)}}
@keyframes blink{50%{opacity:.25}}
@keyframes stampIn{0%{opacity:0;transform:rotate(-14deg) scale(2.4)}70%{opacity:.92;transform:rotate(-14deg) scale(.9)}100%{opacity:.88;transform:rotate(-14deg) scale(1)}}