@font-face{font-family:PostSerif;src:url('assets/serif.woff2') format('woff2');font-display:swap;font-weight:400 800}
@font-face{font-family:PostScript;src:url('assets/script.woff2') format('woff2');font-display:swap;font-weight:400}
:root{--ink:#4c405a;--muted:#8b7e95;--accent:#9274a8;--paper:#faf7f1;--ambient:#eee8f2;--serif:PostSerif,'Songti SC','SimSun',serif;--sans:'Microsoft YaHei','PingFang SC',sans-serif}
*{box-sizing:border-box}html{min-height:100%;background:var(--ambient);transition:background 1s}body{margin:0;color:var(--ink);font-family:var(--sans);font-size:14px;min-height:100svh;-webkit-tap-highlight-color:transparent;overflow-x:hidden;transition:color .7s}button{font:inherit;color:inherit;cursor:pointer;-webkit-appearance:none;appearance:none;border:0;background:none;padding:0}button:focus-visible{outline:2px solid var(--accent);outline-offset:6px;border-radius:6px}[hidden]{display:none!important}button:disabled{cursor:default}.paper-grain{position:fixed;inset:0;pointer-events:none;z-index:12;opacity:.06;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.87' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath fill='%23000' opacity='.85' filter='url(%23n)' d='M0 0h180v180H0z'/%3E%3C/svg%3E")}.ambient{position:fixed;inset:0;overflow:hidden;pointer-events:none}.ambient i{position:absolute;width:60vw;height:60vw;min-width:420px;min-height:420px;border-radius:50%;background:rgba(255,255,255,.32);filter:blur(70px);top:-30%;left:-25%;animation:ambientDrift 24s ease-in-out infinite alternate}.ambient i:nth-child(2){background:rgba(208,187,224,.12);left:70%;top:25%;animation-delay:-9s}.ambient i:nth-child(3){width:35vw;height:35vw;left:20%;top:85%;animation-delay:-16s}main{position:relative;z-index:1}.cover{display:flex;align-items:center;flex-direction:column;text-align:center;min-height:100svh;padding:38px 20px 25px;overflow:hidden}.cover-top{letter-spacing:.24em;font-size:9px;color:#94829f;display:flex;align-items:center;gap:11px}.tiny-flower{font-family:Georgia,serif;font-size:27px;line-height:1;color:#9d85b0;display:inline-block}.cover-dedication{margin:41px 0 16px;font-size:13px;letter-spacing:.23em;color:#7d6a8b}.cover h1{font-family:var(--serif);font-weight:500;font-size:clamp(31px,4vw,45px);line-height:1.65;letter-spacing:.12em;margin:0;text-indent:.12em}.title-dot{color:#a38bb5}.cover-note{margin:21px 0 4px;font-size:12px;line-height:2.1;color:#8b7e95;letter-spacing:.09em}.handwriting{font-family:PostScript,'Brush Script MT','Segoe Script',cursive;font-weight:400}.envelope{position:relative;width:min(360px,85vw);height:222px;margin:37px 0 21px;perspective:1000px;transform:rotate(-4deg);transition:transform .65s;display:block;isolation:isolate}.envelope:hover{transform:rotate(-1deg) translateY(-5px)}.envelope-shadow{position:absolute;inset:18px 13px -5px;background:#8f799b;filter:blur(22px);opacity:.19;z-index:-1}.envelope-back{position:absolute;inset:0;background:#d7c8df;border-radius:4px}.letter-peek{position:absolute;inset:6px 15px 0;display:flex;flex-direction:column;gap:12px;align-items:center;padding:29px 15px;background:#fbf8f2;border-radius:2px;font-size:10px;letter-spacing:.15em;transition:transform 1.05s ease .24s;box-shadow:0 -3px 18px #89759c0c}.letter-peek .handwriting{font-size:25px;letter-spacing:0;color:#a293ad}.envelope-front{position:absolute;inset:0;background:linear-gradient(155deg,#eee6f0,#e0d4e7);clip-path:polygon(0 0,50% 54%,100% 0,100% 100%,0 100%);border-radius:4px;z-index:3}.envelope-front:after{content:'';position:absolute;inset:0;background:#e5dbe9;clip-path:polygon(0 100%,50% 47%,100% 100%)}.envelope-flap{position:absolute;inset:0;background:linear-gradient(#eee5f0,#ddd0e5);clip-path:polygon(0 0,100% 0,50% 58%);transform-origin:top;transition:transform .65s ease,z-index .1s .3s;z-index:4;filter:drop-shadow(0 3px 1px #8e789a20);backface-visibility:visible}.wax-seal{position:absolute;width:50px;height:50px;left:calc(50% - 25px);top:99px;background:linear-gradient(135deg,#ae92be,#9273a8);border-radius:48% 52% 45% 51%;z-index:6;box-shadow:0 3px 4px #65517826,inset 0 0 0 4px #b498c880,inset 0 0 0 5px #80629733;display:grid;place-items:center;transition:opacity .3s,transform .3s}.wax-seal span{font-family:Georgia,serif;font-size:29px;color:#d8c5e2;text-shadow:0 1px 1px #6b4d83}.envelope-address{position:absolute;bottom:27px;left:0;right:0;z-index:5;font-family:var(--serif);font-size:12px;letter-spacing:.23em;color:#8e759e}.envelope-florals{position:absolute;width:140px;height:155px;left:-43px;bottom:-6px;z-index:7;pointer-events:none;transform:rotate(-15deg)}.envelope-florals svg{width:100%;height:100%;overflow:visible}.cover.is-opening .envelope{transform:rotate(0deg) translateY(15px)}.cover.is-opening .envelope-flap{transform:rotateX(180deg);z-index:0}.cover.is-opening .letter-peek{transform:translateY(-100px)}.cover.is-opening .wax-seal{opacity:0;transform:scale(1.3)}.cover.is-opening .open-text{opacity:0}.cover.is-leaving{animation:coverOut .65s both}.open-text{font-size:12px;letter-spacing:.12em;border-bottom:1px solid #b6a5c375;padding:8px 2px;color:#745e85;transition:opacity .3s}.open-text span{margin-left:12px}.cover-bottom{margin:30px 0 0;font-size:10px;letter-spacing:.13em;color:#a495ad}
.experience{width:min(100%,1016px);margin:0 auto;padding:30px 32px 20px;min-height:100svh;animation:experienceIn .8s both}.masthead{display:flex;align-items:center;justify-content:space-between;margin:0 4px 24px;color:var(--muted);font-size:10px;letter-spacing:.15em}.masthead button{display:flex;align-items:center;gap:11px}.masthead .tiny-flower{font-size:25px}.postmark-date{font-family:Georgia,serif;font-size:11px;letter-spacing:.16em}.card-stage{perspective:1800px;position:relative}.card-stage:before,.card-stage:after{content:'';position:absolute;inset:6px -1px -6px;background:#f8f4ee;border:1px solid #b4a4ba22;transform:rotate(1deg);z-index:-1;box-shadow:0 8px 22px #55446009}.card-stage:after{transform:rotate(-.7deg);inset:3px -2px -4px}.postcard{display:grid;grid-template-columns:1fr 1fr;min-height:568px;position:relative;background:var(--paper);box-shadow:0 20px 60px #6d57731a,0 1px 3px #6d577314;outline:none;transform-style:preserve-3d;border:1px solid #ffffffb3;will-change:transform,opacity;isolation:isolate}.postcard.turn-out-next{animation:turnOutNext .31s ease-in both}.postcard.turn-in-next{animation:turnInNext .52s cubic-bezier(.16,.65,.3,1) both}.postcard.turn-out-prev{animation:turnOutPrev .31s ease-in both}.postcard.turn-in-prev{animation:turnInPrev .52s cubic-bezier(.16,.65,.3,1) both}.art-panel{position:relative;min-width:0;overflow:hidden;display:flex;align-items:center;justify-content:center;background:var(--art-background,#e3d8eb)}.art-panel:after{content:'';position:absolute;inset:0;box-shadow:inset -5px 0 14px #4c405a05;pointer-events:none}.art-topline{position:absolute;top:24px;left:27px;font-size:9px;letter-spacing:.2em;color:var(--scene-ink,#897397);z-index:1;opacity:.9}.art-caption{position:absolute;bottom:24px;left:0;right:0;text-align:center;color:var(--scene-ink,#897397);font-size:10px;letter-spacing:.13em;pointer-events:none;transition:opacity .3s;z-index:2}.art-index{position:absolute;right:22px;top:13px;font-family:Georgia,serif;font-size:52px;font-style:italic;font-weight:400;color:#fff;opacity:.35;line-height:1;pointer-events:none}.scene-button{width:100%;height:100%;min-height:568px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;touch-action:pan-y}.scene-button:focus-visible{outline-offset:-8px}.scene-wrap{display:block;width:100%;height:100%;position:absolute;inset:0}.scene-wrap>svg{width:100%;height:100%;overflow:visible}.letter-panel{padding:28px 39px 24px;display:flex;flex-direction:column;position:relative;background:var(--paper);min-width:0}.letter-top{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;min-height:84px}.letter-top>span:first-child{font-size:10px;color:var(--muted);letter-spacing:.15em;padding-top:12px}.postage-stamp{width:53px;height:67px;flex-shrink:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:5px;color:var(--accent);outline:1px solid #af9bbb66;outline-offset:-5px;border:3px dotted #b6a5c188;transform:rotate(8deg);background:var(--paper)}.postage-stamp span{font-size:5px;letter-spacing:.04em}.postage-stamp b{font-size:23px;line-height:1;font-weight:400}.letter-panel h2{font-family:var(--serif);font-size:27px;letter-spacing:.045em;line-height:1.75;font-weight:500;margin:0 0 25px}.letter-copy{font-size:12px;line-height:2.25;color:var(--muted);letter-spacing:.055em}.letter-copy p{margin:0 0 17px}.letter-copy p:last-child{margin:0}.letter-ending{margin-top:24px;display:flex;align-items:flex-start;gap:12px}.little-rule{display:block;flex:0 0 21px;height:1px;background:var(--accent);opacity:.5;margin-top:11px}.letter-ending p{font-family:var(--serif);font-size:12px;line-height:1.9;letter-spacing:.04em;margin:0;color:var(--ink)}.letter-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:35px;font-size:8px;color:var(--muted);letter-spacing:.16em;opacity:.65}.signature{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:24px}.signature>span:first-child{font-family:var(--serif);font-size:13px;letter-spacing:.04em}.signature .handwriting{font-size:45px;line-height:1;transform:rotate(-7deg);color:var(--accent)}.page-navigation{display:flex;align-items:center;justify-content:center;gap:30px;margin-top:29px}.nav-arrow{width:44px;height:44px;border:1px solid #9e8fa647;border-radius:50%;font-size:23px;color:var(--accent);background:#ffffff20;transition:background .2s,opacity .2s,transform .2s}.nav-arrow:hover:not(:disabled){background:#ffffff75;transform:translateY(-2px)}.nav-arrow:disabled{opacity:.26}.navigation-middle{display:flex;flex-direction:column;align-items:center;gap:13px;min-width:170px}.page-dots{display:flex;gap:13px;align-items:center}.page-dots button{position:relative;width:9px;height:9px;border:1px solid var(--accent);border-radius:50%;opacity:.4;transition:transform .3s,background .3s,opacity .3s}.page-dots button:before{content:'';position:absolute;inset:-8px}.page-dots button[aria-current="page"]{opacity:1;background:var(--accent);transform:scale(1.1)}.navigation-hint{font-size:9px;color:var(--muted);letter-spacing:.11em}.replay{display:block;margin:17px auto 0;font-size:10px;letter-spacing:.08em;color:var(--muted)}.replay span{margin-left:5px}.effect-layer{position:fixed;inset:0;z-index:15;pointer-events:none;overflow:hidden}.effect-petal{position:absolute;width:10px;height:15px;border-radius:65% 20% 70% 25%;background:var(--petal-color,#bc9ed2);opacity:0;animation:petalFall var(--duration,3s) ease-out both;animation-delay:var(--delay,0s)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.flower-stem{transform-origin:center bottom;animation:flowerSway 7s ease-in-out infinite alternate}.flower-stem:nth-child(2n){animation-delay:-3s;animation-duration:9s}.soft-cloud{animation:cloudSail 18s ease-in-out infinite alternate}.soft-cloud:nth-child(2n){animation-delay:-8s}.wave-line{animation:waveSway 8s ease-in-out infinite alternate}.bubble{animation:bubbleRise 5s ease-in-out infinite;transform-origin:center;opacity:.5}.bubble.b2{animation-delay:-2.6s}.bubble.b3{animation-delay:-1.1s}.flame{transform-box:fill-box;transform-origin:50% 100%;animation:flicker 2.1s ease-in-out infinite alternate;transition:opacity .3s}.scene-button.is-active .bloom{transform-box:fill-box;transform-origin:center;animation:blossom 1.4s ease-out}.scene-button.is-active .reaction-bloom{animation:reaction 2.2s ease-out both}.scene-button.is-active .paper-plane{animation:flyAway 2.5s cubic-bezier(.2,.5,.5,1) both}.scene-button.is-active .glass-left{transform-origin:190px 310px;animation:cheerLeft 1.1s ease-in-out}.scene-button.is-active .glass-right{transform-origin:290px 310px;animation:cheerRight 1.1s ease-in-out}.scene-button.is-active .sun-orb{transform-box:fill-box;transform-origin:center;animation:breathe 5s ease-in-out}.scene-button.wish-made .flame{opacity:0;animation:none}.wish-stars{opacity:0;transition:opacity 1s}.wish-made .wish-stars{opacity:1}.scene-button.is-active .clink-star{animation:starPop 1.5s both}.clink-star{opacity:0}.reaction-bloom{opacity:0}.paper-plane{transform-origin:center}.scene-button:not(.wish-made) .smoke{opacity:0}.wish-made .smoke{animation:smokeRise 2s both}.smoke{opacity:0}
@keyframes ambientDrift{to{transform:translate(45px,25px)}}@keyframes coverOut{to{opacity:0;transform:translateY(-15px)}}@keyframes experienceIn{from{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}@keyframes turnOutNext{to{transform:rotateY(-16deg) translateX(-18px);opacity:0}}@keyframes turnInNext{from{transform:rotateY(14deg) translateX(24px);opacity:0}to{transform:rotateY(0) translateX(0);opacity:1}}@keyframes turnOutPrev{to{transform:rotateY(16deg) translateX(18px);opacity:0}}@keyframes turnInPrev{from{transform:rotateY(-14deg) translateX(-24px);opacity:0}to{transform:rotateY(0) translateX(0);opacity:1}}@keyframes flowerSway{to{transform:rotate(1.8deg)}}@keyframes cloudSail{to{transform:translateX(13px)}}@keyframes waveSway{to{transform:translateX(-9px)}}@keyframes bubbleRise{0%,100%{transform:translateY(3px);opacity:.3}50%{transform:translateY(-8px);opacity:.75}}@keyframes flicker{to{transform:scaleX(.8) rotate(5deg)}}@keyframes blossom{0%{transform:scale(.75)}60%{transform:scale(1.14)}100%{transform:scale(1)}}@keyframes reaction{0%{opacity:0;transform:translateY(30px)}35%{opacity:1}100%{opacity:0;transform:translateY(-60px) rotate(13deg)}}@keyframes flyAway{0%{transform:translate(0,0) rotate(0);opacity:1}65%{opacity:1}100%{transform:translate(400px,-240px) rotate(-13deg);opacity:0}}@keyframes cheerLeft{45%{transform:rotate(12deg)}70%{transform:rotate(9deg)}}@keyframes cheerRight{45%{transform:rotate(-12deg)}70%{transform:rotate(-9deg)}}@keyframes breathe{50%{transform:scale(1.2);opacity:.65}}@keyframes starPop{0%{opacity:0;transform:translateY(4px)}40%{opacity:1}100%{opacity:0;transform:translateY(-18px)}}@keyframes smokeRise{20%{opacity:.45}100%{opacity:0;transform:translateY(-45px)}}@keyframes petalFall{0%{opacity:0;transform:translate(0,-15px) rotate(0)}15%{opacity:.8}100%{opacity:0;transform:translate(var(--drift,80px),var(--fall,450px)) rotate(var(--spin,240deg))}}
@media(min-width:760px) and (min-height:850px){.experience{padding-top:7vh}.cover{justify-content:center;padding-bottom:50px}.cover-dedication{margin-top:35px}.envelope{margin-top:42px}.cover-bottom{margin-top:28px}}
@media(max-width:759px){.experience{padding:19px 19px 20px;max-width:480px}.masthead{margin:0 2px 17px;font-size:9px;letter-spacing:.06em}.masthead .tiny-flower{font-size:22px}.masthead button{gap:8px}.postmark-date{font-size:9px}.postcard{display:flex;flex-direction:column;min-height:0}.art-panel{height:clamp(195px,29svh,270px);flex:none}.scene-button{min-height:0;height:100%;width:100%}.scene-wrap>svg{width:100%;height:100%}.art-topline{top:16px;left:19px;font-size:8px;letter-spacing:.14em}.art-index{font-size:41px;top:11px;right:18px}.art-caption{bottom:11px;font-size:9px;letter-spacing:.06em}.letter-panel{padding:21px 25px 18px;min-height:354px;flex:1}.letter-top{min-height:37px;align-items:flex-start}.letter-top>span:first-child{font-size:9px;padding-top:2px;letter-spacing:.12em}.postage-stamp{position:absolute;right:24px;top:18px;width:38px;height:45px;gap:2px;border-width:2px;outline-offset:-4px}.postage-stamp b{font-size:17px}.postage-stamp span{font-size:4px}.letter-panel h2{font-size:23px;line-height:1.65;margin:0 0 17px;letter-spacing:.035em;max-width:100%}.letter-copy{font-size:11px;line-height:2.15;letter-spacing:.035em}.letter-copy p{margin-bottom:12px}.letter-ending{margin-top:17px;gap:9px}.letter-ending p{font-size:11px;line-height:1.8}.little-rule{flex-basis:17px;margin-top:9px}.letter-footer{padding-top:23px;font-size:7px}.page-navigation{margin-top:24px;gap:23px}.nav-arrow{width:41px;height:41px;font-size:22px}.navigation-middle{gap:12px;min-width:165px}.navigation-hint{font-size:8px}.signature{margin-top:20px}.signature>span:first-child{font-size:12px}.signature .handwriting{font-size:38px}.postcard[data-page="5"] .letter-ending{display:none}.postcard[data-page="5"] .letter-panel{min-height:354px}.replay{margin-top:15px}.cover{padding-top:max(25px,env(safe-area-inset-top));justify-content:center;padding-bottom:30px}.cover-top{font-size:8px}.cover-dedication{margin-top:31px;font-size:12px}.cover h1{font-size:32px;line-height:1.7;letter-spacing:.09em}.cover-note{font-size:11px;margin-top:17px}.envelope{width:min(315px,78vw);height:195px;margin-top:35px;margin-bottom:22px}.wax-seal{top:85px;width:46px;height:46px;left:calc(50% - 23px)}.envelope-address{bottom:20px;font-size:11px}.envelope-florals{width:115px;height:132px;left:-32px}.open-text{font-size:11px}.cover-bottom{font-size:8px;margin-top:23px}.cover.is-opening .letter-peek{transform:translateY(-70px)}}
@media(max-width:759px) and (max-height:740px){.experience{padding-top:12px;padding-bottom:16px}.masthead{margin-bottom:12px}.art-panel{height:185px}.letter-panel{padding-top:18px;min-height:330px}.letter-top{min-height:31px}.letter-panel h2{font-size:21px;margin-bottom:13px}.letter-copy{font-size:10.5px;line-height:2.05}.letter-copy p{margin-bottom:10px}.letter-ending{margin-top:12px}.letter-ending p{font-size:10.5px}.letter-footer{padding-top:17px}.page-navigation{margin-top:20px}.postcard[data-page="5"] .letter-panel{min-height:330px}.cover-dedication{margin-top:20px}.cover h1{font-size:29px}.cover-note{margin-top:12px}.envelope{height:180px;width:290px;max-width:76vw;margin-top:27px;margin-bottom:15px}.wax-seal{top:76px}.cover-bottom{margin-top:19px}.signature{margin-top:15px}}
@media(max-width:359px){.experience{padding-left:13px;padding-right:13px}.letter-panel{padding-left:20px;padding-right:20px}.letter-panel h2{font-size:20px}.letter-copy{font-size:10.5px}.cover h1{font-size:27px}}
.postcard{touch-action:pan-y}.scene-button{user-select:none}.letter-copy{font-size:14px;line-height:2.15}.letter-ending p{font-size:13px}.art-caption{font-size:11px}
@media(max-width:759px){.letter-copy{font-size:12.5px;line-height:2.05}.letter-ending p{font-size:12px}.art-caption{font-size:10px}.letter-panel{padding-bottom:20px}.cover-note{font-size:12px}.cover-bottom{font-size:9px}}
@media(max-width:359px){.letter-copy{font-size:12px;line-height:2}.letter-ending p{font-size:11.5px}.art-panel{height:175px}.letter-footer{padding-top:20px}.art-caption{font-size:9px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.ambient i,.flower-stem,.soft-cloud,.wave-line,.bubble,.flame{animation:none!important}.effect-petal{display:none}}