:root{
  --deep:#2a0f52; --plum:#4b1f86; --violet:#7b3fc4; --orchid:#a06ee6; --lav:#c9a9f5; --lilac:#e6d8fb; --pearl:#faf7ff; --white:#fff;
  --blush:#f6c9dc; --peach:#ffd9c2; --rose:#d94a6b; --gold:#e8c98a;
  --ink:#2c1a47; --muted:#6d5a8c;
  --r:22px; --shadow:0 18px 50px -18px rgba(75,31,134,.45); --shadow-s:0 8px 24px -10px rgba(75,31,134,.35);
  --script:'Sacramento',cursive; --display:'Fraunces',Georgia,serif; --sans:'Quicksand',system-ui,-apple-system,'Segoe UI',sans-serif; --hand:'Caveat',cursive;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);color:var(--ink);background:linear-gradient(180deg,var(--pearl),var(--lilac) 40%,var(--pearl) 70%,#efe5ff);min-height:100vh;overflow-x:hidden;line-height:1.55;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
body.noscroll{overflow:hidden;height:100vh}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
[hidden]{display:none!important}
svg{width:1em;height:1em;flex:none}
.script{font-family:var(--script);font-weight:400}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55em;padding:.95em 1.6em;border-radius:999px;font-weight:700;font-size:1rem;letter-spacing:.01em;line-height:1.2;text-align:center;transition:transform .25s cubic-bezier(.2,.9,.3,1.3),box-shadow .25s,background .25s;position:relative;touch-action:manipulation;min-height:48px}
.btn svg{width:1.15em;height:1.15em}
.btn:active{transform:scale(.95)}
.btn.primary{color:#fff;background:linear-gradient(135deg,var(--orchid),var(--violet) 55%,var(--plum));box-shadow:0 10px 26px -8px rgba(123,63,196,.7),inset 0 1px 0 rgba(255,255,255,.35)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px -10px rgba(123,63,196,.8),inset 0 1px 0 rgba(255,255,255,.35)}
.btn.glow{color:var(--plum);background:linear-gradient(135deg,#fff,var(--lilac));box-shadow:0 0 0 1px rgba(255,255,255,.6),0 0 30px rgba(201,169,245,.7)}
.btn.glow:hover{transform:translateY(-2px);box-shadow:0 0 0 1px #fff,0 0 44px rgba(201,169,245,.95)}
.btn.ghost{color:var(--violet);background:rgba(255,255,255,.6);box-shadow:inset 0 0 0 1.5px var(--lav)}
.btn.ghost.light{color:#fff;background:rgba(255,255,255,.12);box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.5)}
.btn.small{font-size:.9rem;padding:.7em 1.2em;min-height:42px}
.btn.big{font-size:1.08rem;padding:1.1em 1.9em}
.pulse{animation:pulse 2.2s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 10px 26px -8px rgba(123,63,196,.7),0 0 0 0 rgba(201,169,245,.6)}50%{box-shadow:0 10px 26px -8px rgba(123,63,196,.7),0 0 0 16px rgba(201,169,245,0)}}
.link{color:var(--violet);font-weight:600;text-decoration:underline;text-underline-offset:3px;font-size:.92rem;padding:.4em}

.kicker{font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;font-weight:700;color:var(--violet)}
.kicker.light{color:rgba(255,255,255,.85)}
.chip{display:inline-block;font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;font-weight:700;color:var(--violet);background:rgba(255,255,255,.7);border:1px solid var(--lav);padding:.35em .9em;border-radius:999px;margin-bottom:.8rem}
.chip.light{color:#fff;background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.35)}
.glass{background:rgba(255,255,255,.62);backdrop-filter:blur(14px) saturate(1.2);-webkit-backdrop-filter:blur(14px) saturate(1.2);border:1px solid rgba(255,255,255,.75);box-shadow:var(--shadow)}
.glass-dark{background:rgba(42,15,82,.38);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.22);box-shadow:0 30px 80px -30px rgba(0,0,0,.6)}

/* ---------- ambient sky ---------- */
#sky{position:fixed;inset:0;pointer-events:none;z-index:5;overflow:hidden}
#sky .f{position:absolute;top:-8vh;left:var(--x);color:var(--c);opacity:.0;width:var(--s);height:var(--s);animation:fall var(--d) linear var(--dl) infinite;will-change:transform}
#sky .f svg{width:100%;height:100%;animation:sway calc(var(--d)/3) ease-in-out infinite alternate}
#sky .u{top:auto;bottom:-8vh;animation-name:rise}
@keyframes fall{0%{transform:translate3d(0,0,0) rotate(0);opacity:0}10%{opacity:var(--o)}90%{opacity:var(--o)}100%{transform:translate3d(var(--dx),116vh,0) rotate(var(--rot));opacity:0}}
@keyframes rise{0%{transform:translate3d(0,0,0);opacity:0}12%{opacity:var(--o)}88%{opacity:var(--o)}100%{transform:translate3d(var(--dx),-116vh,0);opacity:0}}
@keyframes sway{from{transform:translateX(-10px) rotate(-12deg)}to{transform:translateX(10px) rotate(12deg)}}
#confetti{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:60}

/* ---------- gate ---------- */
.gate,.welcome{position:fixed;inset:0;z-index:40;display:grid;place-items:center;padding:24px 18px;overflow:hidden;color:#fff;text-align:center}
.gate-bg,.welcome-bg,.finale-bg{position:absolute;inset:-4%;background-size:cover;background-position:center;animation:slowzoom 24s ease-in-out infinite alternate}
.gate-bg::after,.welcome-bg::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 50% 40%,rgba(123,63,196,.15),rgba(42,15,82,.65))}
@keyframes slowzoom{from{transform:scale(1)}to{transform:scale(1.08)}}
.gate-card{position:relative;width:min(460px,100%);border-radius:30px;padding:34px 22px 26px}
.lock-heart{position:relative;width:74px;height:74px;margin:0 auto 14px;animation:beat 1.6s ease-in-out infinite}
.lock-heart .lh{width:100%;height:100%;color:#fff;filter:drop-shadow(0 0 18px rgba(201,169,245,.9))}
.lock-heart .lk{position:absolute;left:50%;top:44%;width:26px;height:26px;transform:translate(-50%,-50%);color:var(--violet)}
@keyframes beat{0%,100%{transform:scale(1)}14%{transform:scale(1.12)}28%{transform:scale(1)}42%{transform:scale(1.08)}}
.gate-title{font-size:clamp(2.6rem,11vw,3.6rem);line-height:1.05;margin:.25em 0 .2em;text-shadow:0 0 28px rgba(201,169,245,.8)}
.gate-line{min-height:3.2em;color:rgba(255,255,255,.92);font-size:1rem;max-width:34ch;margin:0 auto;transition:opacity .5s}
.clock{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:22px 0 22px}
.unit{background:linear-gradient(180deg,rgba(255,255,255,.22),rgba(255,255,255,.06));border:1px solid rgba(255,255,255,.28);border-radius:18px;padding:12px 4px 10px}
.unit b{display:block;font-family:var(--display);font-weight:600;font-size:clamp(1.6rem,8vw,2.3rem);line-height:1.1;font-variant-numeric:tabular-nums}
.unit span{font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;opacity:.8}
.unit b.tick{animation:tick .45s ease}
@keyframes tick{0%{transform:translateY(-6px);opacity:.3}100%{transform:none;opacity:1}}
.peek-reply{min-height:1.6em;margin-top:12px;font-weight:600;color:var(--lilac)}
.tiny{font-size:.8rem;opacity:.75;margin-top:8px}

/* ---------- welcome ---------- */
.welcome{z-index:45;transition:opacity .9s ease,transform .9s ease}
.welcome.leaving{opacity:0;transform:scale(1.08)}
.orbs i{position:absolute;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.9),rgba(201,169,245,.0) 70%);width:var(--s,120px);height:var(--s,120px);animation:orb 9s ease-in-out infinite alternate}
.orbs i:nth-child(1){left:8%;top:12%;--s:90px}
.orbs i:nth-child(2){right:10%;top:22%;--s:60px;animation-delay:-3s}
.orbs i:nth-child(3){left:20%;bottom:16%;--s:70px;animation-delay:-5s}
.orbs i:nth-child(4){right:18%;bottom:10%;--s:110px;animation-delay:-2s}
.orbs i:nth-child(5){left:55%;top:6%;--s:40px;animation-delay:-6s}
@keyframes orb{from{transform:translate3d(0,0,0);opacity:.35}to{transform:translate3d(20px,-30px,0);opacity:.8}}
.welcome-inner{position:relative;max-width:520px}
.w1{font-size:clamp(3.2rem,15vw,5.2rem);line-height:1;min-height:1.1em;text-shadow:0 0 30px rgba(201,169,245,.9)}
.w2{font-family:var(--display);font-style:italic;font-size:clamp(1.15rem,5vw,1.5rem);margin:.6em 0 1.6em;min-height:1.5em;opacity:0;transform:translateY(10px);transition:all .8s ease}
.w2.on{opacity:1;transform:none}
#openBtn{opacity:0;transform:translateY(14px) scale(.96);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.9,.3,1.3)}
#openBtn.on{opacity:1;transform:none}
.caret::after{content:"";display:inline-block;width:2px;height:.8em;background:#fff;margin-left:4px;vertical-align:baseline;animation:blink .8s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .9s ease,transform .9s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- hero ---------- */
#story{position:relative;z-index:2;animation:storyIn 1.1s ease both}
@keyframes storyIn{from{opacity:0;filter:blur(8px)}to{opacity:1;filter:none}}
.hero{position:relative;min-height:100svh;display:grid;place-items:center;overflow:hidden;color:#fff;text-align:center;padding:72px 20px 120px}
.hero-bg{position:absolute;inset:-8% 0 -8% 0;will-change:transform}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(42,15,82,.35),rgba(75,31,134,.18) 45%,rgba(250,247,255,0) 80%,var(--pearl))}
.hero-inner{position:relative;max-width:640px;z-index:2}
.hero-title{font-family:var(--script);font-weight:400;font-size:clamp(3.1rem,14vw,6rem);line-height:1;margin:.15em 0 .25em;text-shadow:0 4px 30px rgba(42,15,82,.55)}
.hero-title .w{display:inline-block;opacity:0;transform:translateY(20px) rotate(-4deg);animation:wordIn .8s cubic-bezier(.2,.9,.3,1.2) forwards;animation-delay:calc(var(--i)*.12s + .2s)}
@keyframes wordIn{to{opacity:1;transform:none}}
.hero-text{font-size:clamp(1.02rem,4.2vw,1.2rem);max-width:30ch;margin:0 auto;font-weight:600;text-shadow:0 2px 16px rgba(42,15,82,.6);background:rgba(42,15,82,.22);padding:.8em 1.1em;border-radius:18px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.teddy-wrap{position:relative;width:min(230px,58vw);margin:26px auto 0}
.teddy{width:100%;height:auto;filter:drop-shadow(0 18px 24px rgba(42,15,82,.35));animation:bob 3.4s ease-in-out infinite;transform-origin:50% 90%;cursor:pointer}
.teddy.wave{animation:wiggle .9s ease}
@keyframes bob{0%,100%{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-12px) rotate(2deg)}}
@keyframes wiggle{0%,100%{transform:rotate(0)}20%{transform:rotate(-10deg) scale(1.05)}40%{transform:rotate(9deg) scale(1.05)}60%{transform:rotate(-6deg)}80%{transform:rotate(4deg)}}
.teddy-bubble{position:absolute;top:2%;right:-14%;background:#fff;color:var(--violet);font-weight:700;font-size:.9rem;padding:.45em .8em;border-radius:16px 16px 16px 4px;box-shadow:var(--shadow-s);animation:bubble 3.4s ease-in-out infinite}
@keyframes bubble{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-6px) scale(1.04)}}
.scroll-hint{display:inline-flex;flex-direction:column;align-items:center;gap:4px;margin-top:20px;color:var(--plum);text-decoration:none;font-size:.82rem;font-weight:700;background:rgba(255,255,255,.7);padding:.5em 1em;border-radius:999px}
.scroll-hint svg{width:22px;height:22px;animation:nudge 1.6s ease-in-out infinite}
@keyframes nudge{50%{transform:translateY(5px)}}
.flower-row{position:absolute;left:0;right:0;bottom:-6px;height:90px;z-index:3;pointer-events:none}
.flower-row .fl{position:absolute;bottom:0;left:var(--x);width:var(--s);height:calc(var(--s)*2.1);transform-origin:50% 100%;animation:sway2 var(--d) ease-in-out infinite alternate}
.flower-row .fl svg{width:100%;height:100%}
@keyframes sway2{from{transform:rotate(-6deg)}to{transform:rotate(6deg)}}

/* ---------- chapters ---------- */
.chapter{position:relative;padding:84px 18px;max-width:1100px;margin:0 auto}
.head{text-align:center;max-width:640px;margin:0 auto 34px}
.head h2{font-family:var(--display);font-weight:600;font-size:clamp(1.75rem,7vw,2.7rem);line-height:1.15;color:var(--plum);letter-spacing:-.01em}
.sub{color:var(--muted);margin-top:.6em;font-size:1.02rem}
.sub.small{font-size:.92rem;margin-top:.2em}

/* know cards */
.know-grid{display:grid;gap:16px;grid-template-columns:1fr;perspective:900px}
.kcard{position:relative;border-radius:var(--r);padding:24px 20px 22px 74px;min-height:110px;display:flex;align-items:center;font-size:1.08rem;font-weight:600;color:var(--ink);background:linear-gradient(135deg,rgba(255,255,255,.85),rgba(240,230,255,.75));border:1px solid #fff;box-shadow:var(--shadow-s);transition:transform .35s cubic-bezier(.2,.9,.3,1.2),box-shadow .35s;opacity:0;transform:translateY(30px) rotateX(18deg)}
.kcard.in{opacity:1;transform:none;transition:opacity .7s ease,transform .8s cubic-bezier(.2,.9,.3,1.2),box-shadow .35s}
.kcard:hover{transform:translateY(-4px) rotate(-.6deg);box-shadow:var(--shadow)}
.kcard .ki{position:absolute;left:18px;top:50%;width:42px;height:42px;margin-top:-21px;border-radius:14px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--orchid),var(--violet));box-shadow:0 8px 18px -8px var(--violet)}
.kcard .ki svg{width:22px;height:22px}
.kcard:nth-child(2) .ki{background:linear-gradient(135deg,#f3b2cb,#c56bb0)}
.kcard:nth-child(3) .ki{background:linear-gradient(135deg,var(--gold),#c98bd8)}
.kcard:nth-child(4) .ki{background:linear-gradient(135deg,var(--lav),var(--plum))}
.kcard:nth-child(5) .ki{background:linear-gradient(135deg,var(--peach),var(--orchid))}
.kcard .kn{position:absolute;right:16px;top:12px;font-family:var(--display);font-style:italic;color:var(--lav);font-size:1.1rem}

/* play */
.garden{max-width:none;overflow:hidden;border-radius:36px 36px 0 0}
.garden-bg{position:absolute;inset:-10% 0;z-index:-1}
.garden-bg img{width:100%;height:100%;object-fit:cover;opacity:.9}
.garden-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,var(--lilac) 0%,rgba(230,216,251,.55) 18%,rgba(230,216,251,.35) 60%,var(--pearl) 100%)}
.garden .head h2{color:var(--deep)}
.play-grid{display:grid;gap:16px;max-width:900px;margin:0 auto;grid-template-columns:1fr}
.pcard{position:relative;border-radius:26px;padding:26px 18px 22px;text-align:center}
.pcard h3{font-family:var(--display);font-weight:600;color:var(--plum);font-size:1.3rem;margin-bottom:.6em}
.pnum{position:absolute;left:14px;top:12px;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:.8rem;color:var(--violet);background:var(--lilac)}
.pout,.quiz-result,.heart-msg{min-height:1.5em;margin-top:14px;font-weight:600;color:var(--plum);font-size:1.02rem}
.pout.show,.quiz-result.show,.heart-msg.show{animation:popIn .55s cubic-bezier(.2,.9,.3,1.4)}
@keyframes popIn{0%{opacity:0;transform:scale(.7) translateY(8px)}100%{opacity:1;transform:none}}
.shake{animation:shake .5s ease}
@keyframes shake{0%,100%{transform:none}20%{transform:translateX(-7px) rotate(-2deg)}40%{transform:translateX(7px) rotate(2deg)}60%{transform:translateX(-4px)}80%{transform:translateX(4px)}}
.secret{margin-top:16px}
.secret-msg{font-family:var(--hand);font-size:1.5rem;line-height:1.3;color:var(--deep);background:linear-gradient(135deg,#fff,var(--lilac));padding:16px 18px;border-radius:18px;box-shadow:inset 0 0 0 1px var(--lav);animation:unfold .7s cubic-bezier(.2,.9,.3,1.2)}
@keyframes unfold{from{opacity:0;transform:perspective(600px) rotateX(-70deg);transform-origin:top}to{opacity:1;transform:none}}
.quiz-opts{display:grid;gap:10px}
.qopt{padding:.9em 1em;border-radius:16px;font-weight:700;color:var(--plum);background:rgba(255,255,255,.85);box-shadow:inset 0 0 0 1.5px var(--lav);transition:all .25s;min-height:48px}
.qopt:hover{background:#fff;transform:translateY(-2px)}
.qopt.picked{color:#fff;background:linear-gradient(135deg,var(--orchid),var(--violet));box-shadow:0 10px 22px -10px var(--violet)}
.quiz-result{font-family:var(--display);font-style:italic;font-size:1.15rem}
.stamp{display:inline-block;margin-top:10px;font-family:var(--sans);font-style:normal;font-size:.75rem;letter-spacing:.2em;text-transform:uppercase;font-weight:700;color:var(--rose);border:2px solid var(--rose);padding:.3em .7em;border-radius:8px;transform:rotate(-6deg);animation:stamp .5s cubic-bezier(.2,.9,.3,1.6) both;animation-delay:.3s}
@keyframes stamp{from{opacity:0;transform:rotate(-6deg) scale(2.2)}to{opacity:1;transform:rotate(-6deg) scale(1)}}
.heart-field{position:relative;height:290px;margin-top:10px;border-radius:20px;background:radial-gradient(ellipse at 50% 120%,rgba(201,169,245,.5),rgba(255,255,255,.2));overflow:hidden}
.fheart{position:absolute;left:var(--x);top:var(--y);width:var(--s);height:var(--s);color:var(--c);display:grid;place-items:center;animation:floaty var(--d) ease-in-out infinite alternate;transition:opacity .4s,transform .4s;filter:drop-shadow(0 6px 10px rgba(123,63,196,.35));padding:6px;margin:-6px}
.fheart svg{width:100%;height:100%;transition:transform .2s}
.fheart:hover svg{transform:scale(1.15)}
.fheart.popped{opacity:0;transform:scale(1.8);pointer-events:none}
@keyframes floaty{0%{transform:translate(0,0) rotate(-8deg)}100%{transform:translate(var(--mx),var(--my)) rotate(8deg)}}
.heart-count{font-size:.85rem;color:var(--muted);margin-top:4px}

/* letter */
.env-stage{max-width:520px;margin:0 auto;position:relative}
.envelope{position:relative;display:block;width:100%;border-radius:28px;overflow:hidden;box-shadow:var(--shadow);transition:transform .5s ease,opacity .6s ease}
.envelope img{width:100%;height:auto;aspect-ratio:1}
.envelope:hover{transform:translateY(-4px) rotate(-.8deg)}
.envelope.opening{animation:envOpen .9s ease forwards}
@keyframes envOpen{0%{transform:none}30%{transform:scale(1.04) rotate(-2deg)}60%{transform:scale(1.02) rotate(2deg)}100%{transform:scale(.6) translateY(40px);opacity:0}}
.seal-hit{position:absolute;left:56.4%;top:61%;width:22%;aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;display:grid;place-items:center;color:rgba(255,255,255,.0);box-shadow:0 0 0 0 rgba(160,110,230,.7);animation:sealPulse 2s ease-out infinite}
@keyframes sealPulse{0%{box-shadow:0 0 0 0 rgba(160,110,230,.65)}100%{box-shadow:0 0 0 26px rgba(160,110,230,0)}}
.tap-pill{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);display:inline-flex;align-items:center;gap:.4em;background:rgba(255,255,255,.92);color:var(--violet);font-weight:700;font-size:.9rem;padding:.55em 1em;border-radius:999px;box-shadow:var(--shadow-s);white-space:nowrap}
.letter{position:relative;text-align:center}
.letter-paper{position:relative;text-align:left;padding:34px 24px 30px;border-radius:10px 10px 22px 22px;background:linear-gradient(transparent 31px,rgba(160,110,230,.14) 32px) 0 18px/100% 32px, linear-gradient(180deg,#fffdfa,#faf5ff);box-shadow:0 30px 60px -28px rgba(75,31,134,.55),0 0 0 1px rgba(201,169,245,.5);transform-origin:top center;animation:paper 1s cubic-bezier(.2,.9,.3,1.1) both}
.letter-paper::before{content:"";position:absolute;left:50%;top:-14px;width:46px;height:46px;transform:translateX(-50%);border-radius:50%;background:radial-gradient(circle at 35% 30%,#a875e8,#5b2a9a);box-shadow:0 6px 14px -4px rgba(75,31,134,.6)}
.letter-paper::after{content:"";position:absolute;left:50%;top:-1px;width:20px;height:18px;transform:translateX(-50%);background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 21s-7.5-4.6-10-9.3C.3 8.4 2.2 4.5 6 4.5c2.3 0 3.6 1.3 4.3 2.4h.1c.7-1.1 2-2.4 4.3-2.4 3.8 0 5.7 3.9 4 7.2C19.5 16.4 12 21 12 21z' fill='%23e6d8fb'/%3E%3C/svg%3E") center/contain no-repeat}
@keyframes paper{0%{opacity:0;transform:perspective(900px) rotateX(-85deg) scaleY(.4)}60%{opacity:1}100%{opacity:1;transform:none}}
.l-greet{font-family:var(--script);font-size:2.6rem;color:var(--violet);line-height:1.1;margin-bottom:6px}
#letterBody p{font-family:var(--hand);font-size:1.42rem;line-height:32px;color:#3b2463;margin-bottom:12px;opacity:0;transform:translateY(8px);transition:opacity .8s ease,transform .8s ease}
#letterBody p.on{opacity:1;transform:none}
.l-sign{font-family:var(--hand);font-size:1.4rem;line-height:1.3;color:#3b2463;text-align:right;margin-top:16px;opacity:0;transition:opacity .9s ease}
.l-sign.on{opacity:1}
.l-sign b{font-family:var(--script);font-weight:400;font-size:2.4rem;color:var(--violet)}
#closeLetter{margin-top:20px}

/* video */
.dark{max-width:none;background:radial-gradient(ellipse at 50% 0%,#5b2a9a,var(--deep) 70%);color:#fff;border-radius:36px}
.dark .head h2{color:#fff}
.dark .sub{color:rgba(255,255,255,.8)}
.vplayer{position:relative;max-width:560px;margin:0 auto;border-radius:26px;overflow:hidden;background:#1c0a38;box-shadow:0 30px 80px -30px rgba(0,0,0,.7),0 0 0 1px rgba(255,255,255,.15);aspect-ratio:1}
.vplayer video{width:100%;height:100%;object-fit:cover;display:block}
.v-big{position:absolute;left:50%;top:50%;width:84px;height:84px;margin:-42px 0 0 -42px;border-radius:50%;display:grid;place-items:center;color:var(--violet);background:rgba(255,255,255,.92);box-shadow:0 0 0 10px rgba(255,255,255,.18),0 12px 30px rgba(0,0,0,.35);transition:transform .25s,opacity .3s}
.v-big svg{width:36px;height:36px;margin-left:4px}
.v-big:hover{transform:scale(1.07)}
.vplayer.playing .v-big{opacity:0;pointer-events:none}
.v-bar{position:absolute;left:12px;right:12px;bottom:12px;display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:999px;background:rgba(42,15,82,.55);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.v-btn{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;color:#fff;background:rgba(255,255,255,.14)}
.v-btn svg{width:20px;height:20px}
.v-prog{flex:1;height:6px;border-radius:6px;background:rgba(255,255,255,.25);overflow:hidden;cursor:pointer}
.v-prog i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--lav),#fff);border-radius:6px}
.v-end{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none;background:radial-gradient(ellipse,rgba(42,15,82,.15),rgba(42,15,82,.55));opacity:0;transition:opacity 1.2s ease}
.v-end span{font-family:var(--script);font-size:clamp(2.6rem,12vw,4rem);color:#fff;text-align:center;line-height:1.05;padding:0 16px;text-shadow:0 0 24px rgba(201,169,245,.95),0 4px 18px rgba(42,15,82,.7);transform:scale(.9);transition:transform 1.4s ease}
.v-end.on{opacity:1}
.v-end.on span{transform:scale(1)}

/* cake */
.cake-stage{position:relative;max-width:460px;margin:0 auto;border-radius:30px;overflow:hidden;box-shadow:var(--shadow);aspect-ratio:1}
.cake-stage img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:opacity 1s ease}
.cake-off{opacity:0}
.cake-stage.out .cake-off{opacity:1}
.cake-stage.out .cake-on{opacity:0}
.glows i{position:absolute;left:var(--x);top:var(--y);width:16%;aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;background:radial-gradient(circle,rgba(255,230,170,.55),rgba(255,210,140,0) 65%);animation:flick 1.3s ease-in-out infinite alternate;mix-blend-mode:screen;transition:opacity .5s}
.glows i:nth-child(2){animation-delay:-.4s}.glows i:nth-child(3){animation-delay:-.8s}.glows i:nth-child(4){animation-delay:-.2s}
@keyframes flick{0%{transform:translate(-50%,-50%) scale(.85);opacity:.6}50%{opacity:1}100%{transform:translate(-50%,-52%) scale(1.15);opacity:.75}}
.cake-stage.out .glows i{opacity:0;animation:none}
.cake-floaties .cf{position:absolute;left:var(--x);bottom:-10%;width:var(--s);height:var(--s);color:var(--c);animation:rise2 var(--d) linear var(--dl) infinite;opacity:0}
.cake-floaties .cf svg{width:100%;height:100%}
@keyframes rise2{0%{transform:translateY(0);opacity:0}15%{opacity:.9}100%{transform:translateY(-480px) rotate(30deg);opacity:0}}
.cake-actions{text-align:center;margin-top:24px}
.wish-msg{max-width:34ch;margin:16px auto 6px;font-family:var(--display);font-style:italic;font-size:1.2rem;color:var(--plum);min-height:1em}
.wish-msg.show{animation:popIn .7s cubic-bezier(.2,.9,.3,1.3)}

/* finale */
.finale{position:relative;min-height:100svh;overflow:hidden;color:#fff;text-align:center;padding:90px 20px 40px;display:flex;align-items:center;justify-content:center;margin-top:60px}
.finale-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,var(--pearl) 0%,rgba(42,15,82,.35) 14%,rgba(42,15,82,.55))}
.finale-inner{position:relative;z-index:2;max-width:620px;width:100%}
.moon-art{width:min(420px,90%);margin:0 auto 18px;border-radius:28px;box-shadow:0 26px 60px -26px rgba(0,0,0,.6)}
#lastBtn{margin-top:14px}
.last{margin-top:26px;animation:storyIn 1s ease both}
.bouquet{width:min(260px,62vw);margin:0 auto;border-radius:24px;box-shadow:0 26px 60px -22px rgba(0,0,0,.55);animation:bouquetIn 1.2s cubic-bezier(.2,.9,.3,1.2) both}
@keyframes bouquetIn{from{transform:translateY(40px) scale(.8) rotate(-6deg);opacity:0}to{transform:none;opacity:1}}
.last-msg{font-family:var(--display);font-size:clamp(1.08rem,4.4vw,1.3rem);line-height:1.6;margin:22px auto 22px;max-width:34ch;background:rgba(42,15,82,.4);border:1px solid rgba(255,255,255,.2);padding:20px 20px;border-radius:22px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.last-msg .w{opacity:0;display:inline;transition:opacity .5s}
.last-msg .w.on{opacity:1}
.foot{margin-top:34px;font-size:.8rem;opacity:.75;letter-spacing:.04em}
.stars i{position:absolute;left:var(--x);top:var(--y);width:var(--s);height:var(--s);color:#fff;animation:twinkle var(--d) ease-in-out var(--dl) infinite}
.stars i svg{width:100%;height:100%}
@keyframes twinkle{0%,100%{opacity:.15;transform:scale(.6)}50%{opacity:1;transform:scale(1)}}

/* music + toast */
.music{position:fixed;left:12px;bottom:calc(14px + env(safe-area-inset-bottom));z-index:50;display:inline-flex;align-items:center;gap:.5em;padding:.6em .95em;border-radius:999px;color:var(--plum);font-weight:700;font-size:.85rem;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:var(--shadow-s),inset 0 0 0 1.5px var(--lav);min-height:44px}
.music .mi{width:18px;height:18px}
.eq{display:none;align-items:flex-end;gap:2px;height:14px}
.eq b{width:3px;background:var(--violet);border-radius:2px;animation:eq .9s ease-in-out infinite}
.eq b:nth-child(2){animation-delay:-.3s}.eq b:nth-child(3){animation-delay:-.6s}
@keyframes eq{0%,100%{height:4px}50%{height:14px}}
.music.on .eq{display:inline-flex}
.toast{position:fixed;left:50%;top:calc(16px + env(safe-area-inset-top));transform:translate(-50%,-140%);z-index:70;background:rgba(255,255,255,.96);color:var(--plum);font-weight:700;padding:.75em 1.1em;border-radius:16px;box-shadow:var(--shadow);max-width:calc(100% - 32px);text-align:center;transition:transform .45s cubic-bezier(.2,.9,.3,1.2)}
.toast.on{transform:translate(-50%,0)}
.burst-heart{position:fixed;z-index:65;pointer-events:none;color:var(--orchid);width:22px;height:22px;animation:burst 1s ease-out forwards}
.burst-heart svg{width:100%;height:100%}
@keyframes burst{0%{transform:translate(-50%,-50%) scale(.4);opacity:1}100%{transform:translate(calc(-50% + var(--bx)),calc(-50% + var(--by))) scale(1.1);opacity:0}}

/* ---------- larger screens ---------- */
@media (min-width:720px){
  .know-grid{grid-template-columns:repeat(2,1fr)}
  .know-grid .kcard:last-child{grid-column:1/-1;max-width:560px;justify-self:center;width:100%}
  .play-grid{grid-template-columns:1fr 1fr}
  .pcard.wide{grid-column:span 1}
  .quiz-opts{grid-template-columns:1fr}
  .chapter{padding:110px 28px}
  .heart-field{height:300px}
}
@media (min-width:1080px){
  .know-grid{grid-template-columns:repeat(3,1fr)}
  .know-grid .kcard:nth-child(4){grid-column:auto}
  .know-grid .kcard:last-child{grid-column:span 2;max-width:none}
  .hero-inner{max-width:760px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.2s!important;scroll-behavior:auto!important}
  #sky{display:none}
  .reveal,.kcard{opacity:1;transform:none}
}