:root{
  --ink:#1d1a27;--ink2:#2c2838;--ink3:#3d3950;--paper:#f6efe0;--paper2:#e9dfc9;--muted:#9a93ab;
  --hood:#e2704f;--hood-lo:#b6523a;--teal:#3fa08a;--mint:#8af0b0;--yellow:#ffd479;--pink:#ff8fa3;--sky:#8cc8ff;
  --px:3px;--font-pixel:'VT323',ui-monospace,monospace;--font-body:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',sans-serif;
  --cursor:auto;--cursor-hand:pointer;
  color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;background:#14121c;color:var(--paper);font:16px/1.6 var(--font-body);-webkit-font-smoothing:antialiased}
body{cursor:var(--cursor);overflow:hidden}
a,button,[role=button],.hotspots button{cursor:var(--cursor-hand)}
button{font:inherit;color:inherit}
a{color:var(--yellow)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:fixed;left:12px;top:-60px;z-index:50;background:var(--yellow);color:var(--ink);padding:6px 12px;font:20px var(--font-pixel)}
.skip:focus{top:12px}
:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}

/* pixel frame used by every floating box: stepped corners via box-shadow */
.pixel{background:var(--ink);box-shadow:0 calc(-1*var(--px)) 0 0 var(--ink),0 var(--px) 0 0 var(--ink),calc(-1*var(--px)) 0 0 0 var(--ink),var(--px) 0 0 0 var(--ink)}

/* ---------- stage ---------- */
.stage{position:fixed;inset:0;overflow:hidden;background:#0b0a10}
.room{position:absolute;left:0;top:0;transform-origin:0 0;transition:transform .7s cubic-bezier(.65,0,.35,1);will-change:transform}
#canvas{display:block;width:100%;height:100%;image-rendering:pixelated;image-rendering:crisp-edges}
.hotspots{position:absolute;inset:0}
.hotspots button{position:absolute;padding:0;border:0;background:transparent;appearance:none}
.hotspots button:focus-visible{outline:2px dashed var(--yellow);outline-offset:0}
.tip{position:absolute;z-index:4;pointer-events:none;transform:translate(-50%,-100%);padding:3px 10px 4px;font:22px/1 var(--font-pixel);letter-spacing:.5px;color:var(--ink);background:var(--yellow);
  box-shadow:0 -3px 0 0 var(--ink),0 3px 0 0 var(--ink),-3px 0 0 0 var(--ink),3px 0 0 0 var(--ink),0 6px 0 0 rgba(0,0,0,.35);white-space:nowrap;animation:tip-in .18s steps(3) both}
.tip::after{content:"";position:absolute;left:50%;bottom:-9px;margin-left:-3px;width:6px;height:6px;background:var(--yellow);box-shadow:0 3px 0 0 var(--ink),-3px 0 0 0 var(--ink),3px 0 0 0 var(--ink)}
@keyframes tip-in{from{opacity:0;transform:translate(-50%,-80%)}to{opacity:1;transform:translate(-50%,-100%)}}

/* ---------- top bar ---------- */
.topbar{position:fixed;z-index:10;left:0;right:0;top:0;display:flex;align-items:center;gap:18px;padding:14px 20px;pointer-events:none}
.topbar>*{pointer-events:auto}
.wordmark{font:30px/1 var(--font-pixel);color:var(--paper);text-decoration:none;text-shadow:3px 3px 0 var(--ink);margin-right:auto}
.wordmark span{color:var(--hood);margin:0 2px}
.nav{display:flex;gap:6px}
.nav button,.lang,.tool,.clock,.btn{border:0;background:var(--ink);color:var(--paper);font:21px/1 var(--font-pixel);padding:6px 12px 7px;letter-spacing:.5px;
  box-shadow:0 -3px 0 0 var(--ink),0 3px 0 0 var(--ink),-3px 0 0 0 var(--ink),3px 0 0 0 var(--ink),inset 0 -3px 0 0 var(--ink3);transition:transform .12s steps(2),background .12s}
.nav button:hover,.lang:hover,.tool:hover,.clock:hover,.btn:hover{background:var(--ink3);transform:translateY(-2px)}
.nav button:active,.lang:active,.tool:active,.btn:active{transform:translateY(1px)}
.lang{display:flex;gap:4px;align-items:center}
.lang i{color:var(--muted);font-style:normal}
.lang span{opacity:.45}
html[lang=en] .lang span:first-child,html[lang=vi] .lang span:last-child{opacity:1;color:var(--yellow)}

/* ---------- intro card ---------- */
.intro{position:fixed;z-index:5;left:26px;bottom:72px;width:min(380px,calc(100vw - 52px));padding:16px 20px 14px;background:rgba(29,26,39,.92);
  box-shadow:0 -3px 0 0 var(--ink),0 3px 0 0 var(--ink),-3px 0 0 0 var(--ink),3px 0 0 0 var(--ink),6px 9px 0 0 rgba(0,0,0,.3);transition:opacity .3s,transform .3s}
.intro h1{margin:2px 0 6px;font:44px/1 var(--font-pixel);color:var(--paper);letter-spacing:.5px}
.intro p{margin:0 0 8px;font-size:15px;color:#d9d1e4}
.kicker{font:18px/1 var(--font-pixel)!important;letter-spacing:1.5px;color:var(--hood)!important;margin:0!important}
.hint{font:20px/1 var(--font-pixel)!important;color:var(--mint)!important;margin:10px 0 0!important}
.blink{animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
body.panel-open .intro{opacity:0;transform:translateY(12px);pointer-events:none}

/* ---------- HUD ---------- */
.hud{position:fixed;z-index:5;right:22px;bottom:22px;display:flex;gap:10px;align-items:center}
.clock{display:flex;gap:10px;align-items:baseline;background:var(--ink)}
.clock b{font-weight:400;font-size:26px;color:var(--yellow)}
.clock span{font-size:19px;color:var(--muted)}
.clock.lapse b{color:var(--pink)}
.tool{display:flex;gap:7px;align-items:center;font-size:19px}
.tool[aria-pressed=true] .ico{background:var(--yellow)}
.ico{width:12px;height:12px;display:inline-block;background:var(--muted);
  -webkit-mask:var(--mask) center/12px 12px no-repeat;mask:var(--mask) center/12px 12px no-repeat;image-rendering:pixelated}
.ico-lamp{--mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 6 6' shape-rendering='crispEdges'%3E%3Cpath d='M1 0h4v1h1v2H0V1h1zM2 3h2v1H2zM1 5h4v1H1zM2 4h2v1H2z'/%3E%3C/svg%3E")}
.ico-time{--mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 6 6' shape-rendering='crispEdges'%3E%3Cpath d='M1 0h4v1H1zM0 1h1v4H0zM5 1h1v4H5zM1 5h4v1H1zM2 1h1v3h2v1H2z'/%3E%3C/svg%3E")}
.ico-motion{--mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 6 6' shape-rendering='crispEdges'%3E%3Cpath d='M0 0h2v6H0zM3 1h1v4H3zM4 2h1v2H4zM5 2.5h1v1H5z'/%3E%3C/svg%3E")}

.links{position:fixed;left:-9999px}
.links:focus-within{left:26px;top:70px;z-index:12;display:flex;flex-wrap:wrap;gap:8px;max-width:420px;background:var(--ink);padding:12px}
.footer{position:fixed;z-index:5;left:26px;bottom:22px;display:flex;gap:14px;font:18px/1 var(--font-pixel)}
.footer a{color:var(--muted);text-decoration:none}
.footer a:hover{color:var(--paper)}
noscript p{color:var(--paper)}

/* ---------- toast ---------- */
.toast{position:fixed;z-index:30;left:50%;top:76px;transform:translate(-50%,-12px);opacity:0;padding:6px 14px 7px;background:var(--paper);color:var(--ink);font:21px/1 var(--font-pixel);
  box-shadow:0 -3px 0 0 var(--ink),0 3px 0 0 var(--ink),-3px 0 0 0 var(--ink),3px 0 0 0 var(--ink);transition:opacity .25s,transform .25s;pointer-events:none;white-space:nowrap}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- panel ---------- */
.scrim{position:fixed;inset:0;z-index:20;background:rgba(10,8,16,.35);animation:fade .3s both}
@keyframes fade{from{opacity:0}}
.panel{position:fixed;z-index:21;top:50%;left:50%;width:min(760px,calc(100vw - 40px));max-height:min(80vh,720px);display:flex;flex-direction:column;
  background:var(--paper);color:var(--ink);transform:translate(-50%,-50%);
  box-shadow:0 -4px 0 0 var(--ink),0 4px 0 0 var(--ink),-4px 0 0 0 var(--ink),4px 0 0 0 var(--ink),10px 14px 0 0 rgba(0,0,0,.35);animation:panel-in .32s cubic-bezier(.2,.9,.3,1.2) both}
@keyframes panel-in{from{opacity:0;transform:translate(-50%,-46%) scale(.96)}}
.panel.closing{animation:panel-out .2s ease-in both}
@keyframes panel-out{to{opacity:0;transform:translate(-50%,-48%) scale(.98)}}
.panel-bar{display:flex;align-items:center;gap:12px;padding:8px 10px 8px 14px;background:var(--ink);color:var(--paper)}
.dots{display:flex;gap:6px}.dots i{width:9px;height:9px;background:var(--pink)}.dots i:nth-child(2){background:var(--yellow)}.dots i:nth-child(3){background:var(--mint)}
.panel-bar h2{flex:1;margin:0;font:26px/1 var(--font-pixel);letter-spacing:.5px;outline:0}
.close{border:0;background:var(--ink3);width:32px;height:32px;font:28px/1 var(--font-pixel);color:var(--paper);padding:0 0 3px}
.close:hover{background:var(--hood)}
.panel-body{overflow:auto;padding:22px 26px 26px;overscroll-behavior:contain}
.panel-body .kicker{display:block;margin-bottom:6px!important}
.panel-body h3{font:36px/1.05 var(--font-pixel);margin:4px 0 10px;outline:0}
.panel-bar h2{color:var(--muted)}
.panel-body p{margin:0 0 12px}
.panel-body a{color:#a3442c}
.lead{font-size:18px;font-weight:600}
.muted{color:#6e6779;font-size:14px}
.row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.btn{text-decoration:none;display:inline-block;font-size:20px;color:var(--paper)!important}
.btn.alt{background:var(--hood);box-shadow:0 -3px 0 0 var(--ink),0 3px 0 0 var(--ink),-3px 0 0 0 var(--ink),3px 0 0 0 var(--ink),inset 0 -3px 0 0 var(--hood-lo)}

.feature{display:grid;grid-template-columns:96px 1fr;gap:18px;align-items:center;padding:16px;background:var(--paper2);margin-bottom:18px}
.feature img,.app-icon img{image-rendering:auto;width:100%;height:auto;display:block}
.feature .icon{width:96px;height:96px;background:var(--ink);display:grid;place-items:center;font:44px var(--font-pixel);color:var(--yellow)}
.tag{display:inline-block;font:16px/1 var(--font-pixel);letter-spacing:1px;padding:3px 6px;background:var(--ink);color:var(--mint);margin-right:6px}
.list{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;margin:0;padding:0;list-style:none}
.list a{display:flex;gap:10px;align-items:center;padding:8px;background:#fff8ea;text-decoration:none;color:var(--ink);transition:transform .15s,background .15s}
.list a:hover{background:#fff;transform:translateY(-2px)}
.list img{width:40px;height:40px;border-radius:10px;flex:none}
.list b{display:block;font-weight:600;font-size:15px;line-height:1.25}
.list small{display:block;color:#6e6779;font-size:12px;line-height:1.3}

/* phone */
.phone{margin:6px auto 0;width:min(340px,100%);background:var(--ink);padding:16px 14px 18px;border-radius:26px;box-shadow:0 0 0 4px #3d3950,0 10px 0 0 rgba(0,0,0,.2)}
.phone-screen{background:linear-gradient(#2b4b6f,#7c5aa0 60%,#e2704f);border-radius:14px;padding:16px 12px 14px;min-height:300px}
.phone-status{display:flex;justify-content:space-between;font:17px/1 var(--font-pixel);color:#fff;margin:-4px 4px 14px}
.apps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px 8px;list-style:none;margin:0;padding:0}
.apps-grid a{display:flex;flex-direction:column;align-items:center;gap:5px;text-decoration:none;color:#fff;font-size:11px;line-height:1.2;text-align:center}
.app-icon{width:52px;height:52px;border-radius:14px;overflow:hidden;background:#fff;box-shadow:0 3px 0 rgba(0,0,0,.25);transition:transform .18s cubic-bezier(.3,1.6,.5,1)}
.apps-grid a:hover .app-icon{transform:translateY(-3px) scale(1.06)}
.apps-grid li{opacity:0;animation:pop .35s cubic-bezier(.3,1.5,.5,1) both;animation-delay:calc(var(--i)*35ms)}
@keyframes pop{from{opacity:0;transform:scale(.6)}to{opacity:1;transform:none}}

/* photos */
.photos{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:8px 0 0;padding:0;list-style:none}
.polaroid{background:#fff;padding:10px 10px 12px;box-shadow:0 4px 0 rgba(0,0,0,.15);transform:rotate(var(--r,0deg));transition:transform .2s}
.polaroid:hover{transform:rotate(0) translateY(-3px)}
.polaroid img{width:100%;aspect-ratio:3/2;object-fit:cover;display:block}
.polaroid .empty{aspect-ratio:3/2;display:grid;place-items:center;background:repeating-linear-gradient(45deg,#ece5d6 0 6px,#e3dbc9 6px 12px);font:22px var(--font-pixel);color:#8a8273}
.polaroid b{display:block;font:22px/1.1 var(--font-pixel);margin-top:8px}
.polaroid small{color:#8a8273;font-size:12px}

/* notes */
.notes{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;margin-top:8px}
.note{padding:14px 14px 16px;background:var(--c,#ffe08a);color:#3b3226;transform:rotate(var(--r,0deg));box-shadow:0 4px 0 rgba(0,0,0,.12);position:relative}
.note::before{content:"";position:absolute;left:50%;top:-5px;width:10px;height:10px;margin-left:-5px;background:#e25c5c;box-shadow:0 2px 0 rgba(0,0,0,.2)}
.note .tag{background:rgba(0,0,0,.75)}
.note h4{margin:8px 0 6px;font-size:16px;line-height:1.3}
.note p{font-size:14px;margin:0}

/* terminal */
.term{background:#0d171c;color:var(--mint);font:20px/1.25 var(--font-pixel);padding:14px 16px;min-height:260px;max-height:46vh;overflow:auto}
.term p{margin:0;white-space:pre-wrap;word-break:break-word}
.term .cmd{color:var(--sky)}.term .err{color:var(--pink)}.term .dim{color:#4f9c78}
.term form{display:flex;gap:8px;margin-top:4px}
.term label{color:var(--yellow)}
.term input{flex:1;background:transparent;border:0;color:#e8f1ee;font:inherit;outline:0;caret-color:var(--mint);min-width:0}

/* fx canvas for the cursor trail */
.fx{position:fixed;inset:0;width:100vw;height:100vh;pointer-events:none;z-index:40;image-rendering:pixelated}

/* ---------- phones & small screens ---------- */
@media (max-width:760px){
  body{overflow:auto}
  .topbar{position:sticky;padding:10px 14px;flex-wrap:wrap;gap:10px;background:#14121c}
  .wordmark{font-size:26px}
  .nav{order:3;width:100%;overflow-x:auto;gap:8px;padding:4px 3px 6px}
  .nav button{font-size:19px;flex:none}
  .stage{position:relative;inset:auto;height:var(--stage-h,62vh)}
  .intro{position:static;width:auto;margin:18px 16px 0;background:var(--ink)}
  .intro h1{font-size:38px}
  .hud{position:static;margin:18px 16px 0;flex-wrap:wrap}
  .footer{position:static;margin:22px 16px 28px;flex-wrap:wrap}
  .panel{top:auto;bottom:0;left:0;width:100%;max-height:88vh;transform:none;animation:sheet-in .3s cubic-bezier(.2,.9,.3,1) both}
  .panel.closing{animation:sheet-out .2s ease-in both}
  @keyframes sheet-in{from{transform:translateY(100%)}}
  @keyframes sheet-out{to{transform:translateY(100%)}}
  .panel-body{padding:18px 18px 28px}
  .feature{grid-template-columns:64px 1fr}.feature .icon{width:64px;height:64px}
  .photos{grid-template-columns:1fr}
  .toast{top:auto;bottom:20px;white-space:normal;text-align:center;max-width:90vw}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}