#root{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}.logo{height:6em;padding:1.5em;will-change:filter;transition:filter .3s}.logo:hover{filter:drop-shadow(0 0 2em #646cffaa)}.logo.react:hover{filter:drop-shadow(0 0 2em #61dafbaa)}@keyframes logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (prefers-reduced-motion: no-preference){a:nth-of-type(2) .logo{animation:logo-spin infinite 20s linear}}.card{padding:2em}.read-the-docs{color:#888}.intro-active{overflow:hidden;height:100vh}html,body{color:#fff;background:transparent}a,a:visited{color:#0b63ff;text-decoration:underline}a:hover{text-decoration:underline}*{-webkit-tap-highlight-color:transparent}::selection{background:#fff3;color:#fff}html,body,#root{min-height:100%;background:radial-gradient(ellipse at 50% 10%,#0f1a2a,#0b1736 40%,#080f1f);background-attachment:fixed}html,body,#root{background:radial-gradient(ellipse at 50% 10%,#050910,#050716 40%,#02040a)}.intro-wrap{opacity:1;transition:opacity .6s ease}.intro-wrap.fadeout{opacity:0;pointer-events:none}.env-stage{position:relative;width:min(92vw,640px);margin:0 auto;-webkit-user-select:none;user-select:none;overflow:hidden}.env-image{display:block;width:100%;height:auto;margin:0 auto;position:relative;z-index:1}.flap3d{position:absolute;inset:0;transform-style:preserve-3d;pointer-events:none;z-index:3;transform-origin:50% 1%;will-change:transform}.flap3d .flap-face{position:absolute;inset:0;width:100%;height:auto;display:block;backface-visibility:hidden}.flap3d .flap-front{transform:rotateX(0) translateZ(.01px)}.flap3d .flap-back{transform:rotateX(180deg)}.flap3d.opening{animation:flapOpen 3.9s ease forwards}.flap3d.opened{transform:rotateX(-180deg)}@keyframes flapOpen{0%{transform:rotateX(0)}60%{transform:rotateX(-160deg)}to{transform:rotateX(-180deg)}}.seal-btn:focus-visible{outline:2px dashed rgba(255,255,255,.7);outline-offset:3px;border-radius:50%}.skip-btn{margin-top:24px;background:transparent;border:1px solid #fff3;color:#eee;padding:8px 16px;border-radius:6px;cursor:pointer}@media (hover: none) and (pointer: coarse){.skip-btn{padding:12px 20px}}.letter{position:absolute;left:50%;bottom:100%;width:70%;max-width:500px;background:transparent;border:0;border-radius:0;box-shadow:none;padding:0;text-align:initial;transform:translate(-50%,60%);opacity:0;z-index:2;pointer-events:none;will-change:transform,opacity}.letter-img{display:block;width:100%;height:auto;border-radius:10px;box-shadow:0 18px 48px #00000040}.letter h2{position:absolute;inset:0;display:grid;place-items:center;margin:0;font-family:Times New Roman,Georgia,serif;font-size:clamp(22px,4.6vw,34px);letter-spacing:.02em;color:#3b2a1a;text-align:center;pointer-events:none}.letter.show{animation:letterRise 1.3s ease-out forwards;animation-delay:.5s}@keyframes letterRise{0%{transform:translate(-50%,60%);opacity:0}60%{transform:translate(-50%,-10%);opacity:1}to{transform:translate(-50%,-10%);opacity:1}}@keyframes letterFall{0%{transform:translateY(0);opacity:1}to{transform:translateY(120vh);opacity:1}}.seal-btn{z-index:5}@media (max-width: 420px){.letter{width:78%}}.letter.falling{animation:letterFall 1.6s ease-in forwards}html,body,#root{width:100%;min-height:100%;margin:0;padding:0;overflow-x:hidden;-webkit-text-size-adjust:100%}@keyframes flicker{0%,60%{opacity:.65;text-shadow:0 0 4px rgba(255,255,255,.15)}72%{opacity:1;text-shadow:0 0 16px rgba(255,255,255,.6)}80%{opacity:.85;text-shadow:0 0 9px rgba(255,255,255,.35)}88%{opacity:.98;text-shadow:0 0 13px rgba(255,255,255,.5)}to{opacity:.7;text-shadow:0 0 5px rgba(255,255,255,.2)}}.riverTitle{font-size:clamp(3.2em,8.5vw,5.4em);font-weight:800;margin:0;line-height:1.05;text-align:center;color:#8fc6ff;text-shadow:0 0 8px rgba(255,255,255,.7),0 0 16px rgba(255,255,255,.45)}.titleWrap{padding-bottom:22px}.titleFlowShadow{position:absolute;left:50%;transform:translate(-50%);bottom:0;width:min(72%,720px);height:26px;background:radial-gradient(ellipse at center,rgba(34,211,238,.35),rgba(14,165,233,.18) 55%,transparent 75%);filter:blur(10px);opacity:.85}.titleFlowShadow:before,.titleFlowShadow:after{content:"";position:absolute;left:50%;bottom:4px;width:2px;height:2px;background:transparent;box-shadow:-80px 6px #ffffffe6,-52px 10px #ffffffb3,-28px 8px #fffc,-6px 12px #ffffffbf,14px 7px #ffffffe6,36px 11px #ffffffb3,58px 9px #ffffffd9,84px 6px #ffffffbf;animation:driftUp 5.5s linear infinite}.titleFlowShadow:after{bottom:6px;filter:blur(.5px);animation-duration:7s;animation-delay:1.2s;box-shadow:-70px 6px #fffc,-44px 9px #ffffffa6,-18px 7px #ffffffbf,8px 10px #fffc,28px 8px #ffffffb3,50px 12px #ffffffe6,76px 9px #ffffffb3,96px 7px #fffc}@keyframes driftUp{0%{transform:translate(-50%);opacity:0}10%{opacity:.6}60%{opacity:.9}to{transform:translate(-50%,-48px);opacity:0}}.skyTitle{font-size:clamp(3em,8vw,5em);font-weight:700;text-align:center;width:100%;max-width:1100px;margin:0 auto;color:#87ceeb;text-shadow:1px 1px 2px rgba(0,0,0,.6)}.reveal{opacity:0;transform:translateY(24px)}.reveal.in{opacity:1}.reveal.left.in{animation:slideInLeft 2.4s cubic-bezier(.22,.61,.36,1) forwards}.reveal.right.in{animation:slideInRight 2.4s cubic-bezier(.22,.61,.36,1) forwards}@keyframes slideInLeft{0%{opacity:0;transform:translate(-120px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(120px)}to{opacity:1;transform:translate(0)}}body.no-scroll{overflow:hidden}:root{--vh-fix: 100svh}@supports (height: 100dvh){:root{--vh-fix: 100dvh}}.publicRoot{min-height:var(--vh-fix)}body{overscroll-behavior-y:none}.publicRoot{width:100%}.publicRoot img{max-width:100%;height:auto;display:block}.publicRoot{position:relative}canvas{display:block;max-width:100%}@media (max-width: 420px){.titleWrap{padding-bottom:16px}.riverTitle{font-size:clamp(2.4em,9vw,4.2em)}}.publicRoot{overflow-x:hidden}.publicRoot *{max-width:100%}.tsparticles-canvas-el{display:block;max-width:100%!important}.countdown-container{font-size:.85rem;gap:6px}.countdown-box{padding:6px 10px;font-size:.9rem;min-width:48px}.countdown-container{display:flex;align-items:baseline;justify-content:center;gap:8px;margin-top:10px}.countdown-label{color:#fff;text-shadow:0 0 6px rgba(255,255,255,.6),0 0 12px rgba(255,255,255,.4);margin-right:4px;font-size:.95rem}.countdown-box{background-color:#384362b3;padding:6px 10px;border-radius:8px;font-size:1rem;min-width:52px;text-align:center}@media (max-width:420px){.countdown-container{gap:6px}.countdown-label{font-size:.9rem}.countdown-box{padding:4px 8px;font-size:.95rem;min-width:46px}}:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}