:root{
  --mint:#d4f0e4;
  --mint-dark:#b8e0cc;
  --cream:#fffef5;
  --cream-card:rgba(255,255,255,0.94);
  --yellow:#fef7dc;
  --yellow-warm:#fdecc8;
  --coral:#ffd4ca;
  --pink-cute:#ffe4ee;
  --text:#7a7a6a;
  --text-light:#b0b0a0;
}
*{margin:0;padding:0;box-sizing:border-box;}
body{
  font-family:'Quicksand',sans-serif;
  background:var(--cream);
  background-image:
    radial-gradient(circle at 15% 20%,var(--mint) 0%,transparent 32%),
    radial-gradient(circle at 85% 70%,var(--pink-cute) 0%,transparent 32%),
    radial-gradient(circle at 50% 50%,var(--yellow-warm) 0%,transparent 38%);
  background-attachment:fixed;
  color:var(--text);
  min-height:100vh;
  overflow:hidden;
  -webkit-tap-highlight-color:transparent;
}
.pages-wrapper{
  width:100%;height:100vh;
  display:flex;align-items:center;justify-content:center;
  position:relative;
  padding:0 12px;
}
.page{
  display:none;width:100%;max-width:420px;
  padding:16px 10px;text-align:center;
  animation:pageIn 0.5s ease;
}
.page.active{display:block;}
@keyframes pageIn{
  from{opacity:0;transform:translateY(16px) scale(0.97);}
  to{opacity:1;transform:translateY(0) scale(1);}
}
#page0{position:relative;}
#page0::before{
  content:'';position:absolute;top:0;left:0;right:0;bottom:0;
  background-image:
    radial-gradient(circle, rgba(184,224,204,0.35) 2.5px, transparent 2.5px),
    radial-gradient(circle, rgba(255,212,202,0.25) 2px, transparent 2px),
    radial-gradient(circle, rgba(184,224,204,0.2) 1.5px, transparent 1.5px);
  background-size: 40px 40px, 28px 28px, 18px 18px;
  background-position: 0 0, 14px 14px, 7px 7px;
  pointer-events:none;z-index:0;
}
.note{position:absolute;pointer-events:none;z-index:1;animation:floatNote 4s ease-in-out infinite;}
.note:nth-child(1){top:12%;right:10%;font-size:1.2em;color:rgba(255,212,202,0.45);animation-delay:0s;}
.note:nth-child(2){top:55%;left:6%;font-size:1.4em;color:rgba(184,224,204,0.4);animation-delay:1s;}
.note:nth-child(3){top:70%;right:12%;font-size:1.1em;color:rgba(184,224,204,0.35);animation-delay:2s;}
.note:nth-child(4){top:8%;right:30%;font-size:0.9em;color:rgba(255,212,202,0.3);animation-delay:1.5s;}
.note:nth-child(5){top:45%;right:5%;font-size:1.2em;color:rgba(184,224,204,0.3);animation-delay:0.5s;}
.note:nth-child(6){top:35%;left:4%;font-size:1em;color:rgba(255,212,202,0.35);animation-delay:2.5s;}
@keyframes floatNote{
  0%,100%{transform:translateY(0) rotate(0deg);opacity:0.4;}
  50%{transform:translateY(-12px) rotate(8deg);opacity:0.7;}
}
.star{position:absolute;top:-30px;pointer-events:none;z-index:3;will-change:transform;}
.star-shape{display:inline-block;color:#fdecc8;text-shadow:0 0 6px rgba(253,236,200,0.6);animation:starTwinkle 1.5s ease-in-out infinite;}
@keyframes starTwinkle{
  0%,100%{opacity:1;transform:scale(1) rotate(0deg);}
  50%{opacity:0.7;transform:scale(0.8) rotate(20deg);}
}
#page0 .title-inner{position:relative;z-index:2;}
.chinese-title{font-family:'ZCOOL KuaiLe',cursive;font-size:2.4em;color:var(--mint-dark);letter-spacing:2px;text-shadow:3px 3px 0px rgba(212,240,228,0.4);line-height:1.3;}
.english-sub{font-family:'Fredoka',sans-serif;font-weight:500;font-size:1em;color:var(--coral);margin-top:6px;}
.page-hint{margin-top:28px;font-family:'Fredoka',sans-serif;font-size:0.9em;color:var(--text-light);opacity:0.6;}
.stickers{margin-top:16px;display:flex;justify-content:center;gap:16px;align-items:flex-end;}
.cupcake{position:relative;width:32px;height:40px;}
.cupcake .cream{width:30px;height:20px;background:var(--coral);border-radius:50% 50% 40% 40%;position:relative;}
.cupcake .cream::before{content:'';position:absolute;top:-5px;left:5px;width:7px;height:9px;background:var(--coral);border-radius:50% 50% 0 0;}
.cupcake .cream::after{content:'';position:absolute;top:-3px;right:5px;width:5px;height:7px;background:var(--coral);border-radius:50% 50% 0 0;}
.cupcake .liner{width:26px;height:16px;background:var(--yellow-warm);margin:0 auto;border-radius:0 0 6px 6px;clip-path:polygon(0 0,100% 0,90% 100%,10% 100%);}
.bow{position:relative;width:34px;height:20px;}
.bow .loop-l{position:absolute;left:0;top:2px;width:12px;height:14px;background:var(--mint-dark);border-radius:50% 30% 50% 30%;}
.bow .loop-r{position:absolute;right:0;top:2px;width:12px;height:14px;background:var(--mint-dark);border-radius:30% 50% 30% 50%;}
.bow .center{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:7px;height:7px;background:var(--mint-dark);border-radius:50%;}
.cake{position:relative;width:32px;height:34px;}
.cake .top{width:32px;height:9px;background:var(--yellow-warm);border-radius:50% 50% 0 0;}
.cake .body{width:32px;height:20px;background:var(--cream);clip-path:polygon(0 0,100% 0,80% 100%,0 100%);border:1.5px solid var(--yellow-warm);border-top:none;}
.cake .cherry{position:absolute;top:-3px;left:50%;transform:translateX(-50%);width:6px;height:6px;background:#ff8fa3;border-radius:50%;}
.card{background:var(--cream-card);border-radius:24px;padding:22px 16px;box-shadow:0 4px 24px rgba(0,0,0,0.03);border:2px solid rgba(184,224,204,0.25);}
.card h2{font-family:'Fredoka',sans-serif;font-weight:600;font-size:1.4em;color:var(--mint-dark);margin-bottom:14px;}
.cal-nav{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;}
.cal-nav button{width:34px;height:34px;border:none;border-radius:50%;cursor:pointer;background:var(--mint);font-size:0.85em;color:white;}
.cal-nav span{font-weight:700;color:var(--mint-dark);font-size:0.95em;}
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;text-align:center;}
.cal .dn{font-weight:700;color:#c8c8b8;font-size:0.7em;padding:4px 0;}
.cal .dc{padding:8px 1px;border-radius:8px;font-size:0.8em;position:relative;}
.cal .dc.today{background:var(--mint-dark);color:white;font-weight:700;}
.cal .dc.bday{background:var(--mint-dark);color:white;font-weight:700;box-shadow:0 0 0 3px rgba(184,224,204,0.5);}
.cal .dc.bday::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:4px;height:4px;border-radius:50%;background:white;}
.cal .dc.empty{visibility:hidden;}
.baby-birth-note{margin-top:14px;display:flex;align-items:center;justify-content:center;gap:6px;animation:babyPop 0.6s ease 0.3s both;flex-wrap:wrap;}
@keyframes babyPop{from{opacity:0;transform:scale(0.8);}to{opacity:1;transform:scale(1);}}
.baby-birth-note .arrow-line{font-size:1.3em;color:var(--coral);animation:arrowWiggle 2s ease-in-out infinite;}
@keyframes arrowWiggle{0%,100%{transform:translateX(0);}50%{transform:translateX(5px);}}
.baby-birth-note .baby-text{font-family:'Fredoka',sans-serif;font-weight:600;font-size:0.95em;color:var(--coral);background:rgba(255,212,202,0.2);padding:6px 12px;border-radius:12px;border:2px dashed var(--coral);}
.cd-label{font-size:0.9em;color:var(--text-light);margin-bottom:14px;}
.cd-rings{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;}
.ring{width:64px;height:64px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:conic-gradient(var(--mint-dark) 0deg,white 0deg);box-shadow:0 4px 14px rgba(184,224,204,0.3);}
.ring span{font-size:1.3em;font-weight:700;color:var(--mint-dark);}
.ring small{font-size:0.55em;color:var(--text-light);}
.ring.coral{background:conic-gradient(var(--coral) 0deg,white 0deg);}
.ring.coral span{color:var(--coral);}
.letter-content{
  background:#fef9ec;
  background-image:repeating-linear-gradient(transparent,transparent 28px,#e8d5b0 28px,#e8d5b0 29px);
  padding:26px 20px 22px;
  border-radius:16px;
  box-shadow:0 2px 12px rgba(0,0,0,0.04),inset 0 0 0 1px rgba(232,213,176,0.4);
  text-align:left;
  line-height:30px;
  font-size:1.05em;
  color:#5a5045;
  max-height:400px;
  overflow-y:auto;
  font-family:'ZCOOL KuaiLe','Ma Shan Zheng',cursive;
  letter-spacing:1px;
}
.letter-content p{margin-bottom:0;}
.music-btn{
  position:fixed;top:18px;right:18px;z-index:200;
  width:42px;height:42px;border-radius:50%;border:none;cursor:pointer;
  background:white;color:var(--mint-dark);
  font-size:1.1em;box-shadow:0 4px 14px rgba(0,0,0,0.08);
  display:flex;align-items:center;justify-content:center;
  transition:all 0.3s;
}
.music-btn:active{transform:scale(0.9);}
.music-btn .note-on{animation:musicSpin 3s linear infinite;}
@keyframes musicSpin{from{transform:rotate(0deg);}to{transform:rotate(360deg);}}
.btn-prev{position:fixed;bottom:20px;left:14px;z-index:100;padding:10px 20px;border:none;border-radius:22px;cursor:pointer;font-family:'Fredoka',sans-serif;font-weight:600;font-size:0.85em;background:white;color:var(--mint-dark);box-shadow:0 4px 16px rgba(0,0,0,0.06);transition:all 0.3s;}
.btn-prev:active{transform:scale(0.95);}
.btn-next{position:fixed;bottom:20px;right:14px;z-index:100;padding:10px 20px;border:none;border-radius:22px;cursor:pointer;font-family:'Fredoka',sans-serif;font-weight:600;font-size:0.85em;background:linear-gradient(135deg,var(--mint-dark),var(--coral));color:white;box-shadow:0 4px 16px rgba(0,0,0,0.1);transition:all 0.3s;}
.btn-next:active{transform:scale(0.95);}
.dots{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);display:flex;gap:7px;z-index:100;}
.dots .dot{width:7px;height:7px;border-radius:50%;background:#ddd;transition:all 0.3s;}
.dots .dot.active{background:var(--mint-dark);transform:scale(1.3);}
.confetti{position:fixed;pointer-events:none;z-index:999;width:10px;height:10px;border-radius:2px;animation:confettiFall 1.2s ease-out forwards;}
@keyframes confettiFall{to{transform:translateY(100vh) rotate(720deg);opacity:0;}}