:root{--bg:#07070c;--card:#14141f;--ink:#f5f5ff;--muted:#a9a9c7;--accent:#7cf3ff}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:ui-rounded,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-tap-highlight-color:transparent}
button{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
#home{max-width:880px;margin:0 auto;padding:max(18px,env(safe-area-inset-top)) 16px 40px}
.hero h1{font-size:clamp(34px,9vw,56px);margin:10px 0 4px;letter-spacing:-.5px}
.hero h1 span{background:linear-gradient(90deg,#7cf3ff,#b388ff,#ff7eb6);-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{color:var(--muted);margin:0 0 18px;font-size:17px}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(min-width:620px){.cards{grid-template-columns:repeat(3,1fr)}}
.card{border:0;border-radius:22px;padding:20px 10px 16px;background:radial-gradient(120% 90% at 50% 0%,var(--c,#7cf3ff) -60%,var(--card) 70%);box-shadow:0 0 0 2px #ffffff12 inset;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:8px;min-height:150px;transition:transform .12s}
.card:active{transform:scale(.96)}
.card .e{font-size:64px;line-height:1;filter:drop-shadow(0 0 14px var(--c))}
.card .n{font-size:22px;font-weight:800}
.how,.yt{margin-top:26px;background:var(--card);border-radius:20px;padding:16px 18px}
.how h2,.yt h2{margin:0 0 8px;font-size:20px}
.how ol{margin:0;padding-left:22px;line-height:1.5;font-size:16px}
.tip{color:var(--muted);margin:10px 0 0;font-size:15px}
.yt ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.yt a{display:block;color:var(--ink);text-decoration:none;background:#1e1e2d;border-radius:14px;padding:12px 14px;font-size:15px}
.yt a::before{content:"▶ ";color:#ff4f6d}
.credits{color:var(--muted);font-size:12px;margin-top:22px;line-height:1.5}
/* hologram */
#holo{position:fixed;inset:0;background:#000;overflow:hidden;touch-action:manipulation}
#c{position:absolute;inset:0;width:100%;height:100%;display:block;background:#000}
.loading{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);color:#555;font-size:14px;pointer-events:none}
.ui{position:absolute;inset:0;transition:opacity .35s;opacity:1;pointer-events:none}
.ui.hidden{opacity:0}
.ui.hidden *{pointer-events:none!important}
.ui>*{pointer-events:auto}
.topbar{position:absolute;left:0;right:0;top:0;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:max(10px,env(safe-area-inset-top)) 12px 10px;background:linear-gradient(#000d,#0000)}
.title{font-weight:800;font-size:18px}
.btn{background:#1c1c2acc;border:1px solid #ffffff22;border-radius:14px;padding:10px 14px;cursor:pointer;backdrop-filter:blur(6px)}
.btn.big{font-size:26px;padding:14px 20px;border-radius:50%}
.btn.small{padding:8px 12px;font-size:14px}
.btn[aria-pressed=true]{background:#2c5b66}
.nav{position:absolute;left:0;right:0;top:50%;transform:translateY(-50%);display:flex;justify-content:space-between;padding:0 10px;pointer-events:none}
.nav .btn{pointer-events:auto}
.panel{position:absolute;left:0;right:0;bottom:0;padding:12px 16px max(14px,env(safe-area-inset-bottom));background:linear-gradient(#0000,#000e 30%);display:grid;gap:8px}
.panel label{display:grid;grid-template-columns:96px 1fr;align-items:center;font-size:14px;color:#ccd}
.panel input[type=range]{width:100%;accent-color:#7cf3ff;height:28px}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.wake{font-size:12px;color:#889}
.ui.hidden~*,#holo.nocursor{cursor:none}

#dot{position:absolute;width:8px;height:8px;margin:-4px 0 0 -4px;border-radius:50%;background:#2a2a2a;pointer-events:none;opacity:0;transition:opacity .3s}
body.dot-on #dot{opacity:1}
#holo:has(.ui:not(.hidden)) #dot{opacity:1}
#toast{position:absolute;left:50%;top:70px;transform:translateX(-50%);max-width:88%;background:#222c;border:1px solid #fff2;color:#eee;padding:10px 14px;border-radius:12px;font-size:14px;opacity:0;transition:opacity .3s;pointer-events:none;text-align:center}
#toast.on{opacity:1}

/* home: IMAX hero + two-mode cards */
.imaxhero{position:relative;display:grid;gap:6px;width:100%;text-align:left;border:0;border-radius:24px;padding:20px 20px 18px;margin:0 0 18px;cursor:pointer;color:#fff;
  background:radial-gradient(120% 140% at 85% 0%,#2a7bff55 0%,transparent 55%),radial-gradient(90% 120% at 0% 100%,#b388ff44 0%,transparent 60%),linear-gradient(135deg,#061a33,#0b0b24 60%,#170a2a);
  box-shadow:0 0 0 2px #7cf3ff55 inset,0 0 34px #2fd6ff33;overflow:hidden;transition:transform .12s}
.imaxhero:active{transform:scale(.98)}
.imaxhero::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(0deg,#ffffff08 0 1px,transparent 1px 4px);pointer-events:none}
.ih-badge{position:absolute;top:14px;right:14px;background:#ff4f9a;color:#fff;font-weight:900;font-size:12px;padding:4px 9px;border-radius:999px;letter-spacing:.5px}
.ih-t{font-size:clamp(22px,6.2vw,30px);font-weight:900;letter-spacing:-.3px;text-shadow:0 0 18px #2fd6ff99}
.ih-s{color:#bfe9ff;font-size:15px;line-height:1.35;padding-right:30px}
.ih-go{justify-self:start;margin-top:6px;background:linear-gradient(90deg,#2fd6ff,#8a7dff);color:#001;font-weight:900;padding:10px 16px;border-radius:999px;font-size:16px;box-shadow:0 0 18px #2fd6ff88}
.card{cursor:default;padding:14px 10px 12px;gap:10px}
.card .cmain{border:0;background:none;display:flex;flex-direction:column;align-items:center;gap:8px;cursor:pointer;padding:6px 0 0;width:100%}
.card .cmain:active{transform:scale(.96)}
.card:active{transform:none}
.modes{display:grid;grid-template-columns:1fr 1fr;gap:6px;width:100%}
.mode{border:0;border-radius:12px;padding:10px 4px;font-size:14px;font-weight:800;cursor:pointer;background:#ffffff14;box-shadow:0 0 0 1px #ffffff22 inset;white-space:nowrap}
.mode.imx{background:linear-gradient(135deg,#1a6bff,#7a5cff);box-shadow:0 0 12px #2fd6ff55}
.mode:active{transform:scale(.95)}
/* IMAX mode */
#imax{position:fixed;inset:0;background:#000;overflow:hidden;touch-action:none;user-select:none;-webkit-user-select:none}
#ic{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}
.ifx{position:absolute;inset:0;pointer-events:none}
.ifx.scan{background:repeating-linear-gradient(0deg,rgba(120,220,255,.045) 0 1px,transparent 1px 3px);mix-blend-mode:screen;animation:scan 7s linear infinite}
@keyframes scan{from{background-position:0 0}to{background-position:0 120px}}
.ifx.vig{background:radial-gradient(ellipse at 50% 45%,transparent 55%,rgba(0,0,0,.55) 100%)}
.iloading{color:#7cf3ff;font-size:16px;text-shadow:0 0 10px #2fd6ff}
.ihint{position:absolute;left:50%;bottom:calc(86px + env(safe-area-inset-bottom));transform:translateX(-50%);background:#04203acc;border:1px solid #7cf3ff55;color:#dff8ff;padding:10px 14px;border-radius:999px;font-size:14px;font-weight:700;white-space:nowrap;opacity:0;transition:opacity .5s;pointer-events:none;box-shadow:0 0 18px #2fd6ff44}
.ihint.on{opacity:1}
.itoast{position:absolute;left:50%;top:76px;transform:translateX(-50%);max-width:88%;background:#0a1d2ecc;border:1px solid #7cf3ff44;color:#eaffff;padding:10px 14px;border-radius:12px;font-size:14px;opacity:0;transition:opacity .3s;pointer-events:none;text-align:center;z-index:5}
.itoast.on{opacity:1}
#imax .topbar{background:linear-gradient(#000a,#0000)}
#imax .title{text-shadow:0 0 12px #2fd6ff}
.ibar{position:absolute;left:0;right:0;bottom:0;display:flex;justify-content:center;gap:8px;flex-wrap:wrap;padding:12px 12px max(14px,env(safe-area-inset-bottom));background:linear-gradient(#0000,#000a)}
.ibar .btn{font-size:16px;font-weight:700;padding:11px 14px}
#imax .btn{background:#06182acc;border-color:#7cf3ff44}
#imax .btn[aria-pressed=true]{background:#0f5b78;box-shadow:0 0 12px #2fd6ff66}
@media (orientation:landscape) and (max-height:500px){.ibar{left:auto;right:0;top:50%;bottom:auto;transform:translateY(-50%);flex-direction:column;padding:0 10px 0 0;background:none;margin-right:env(safe-area-inset-right)}
  #imax .nav{padding:0 90px 0 max(10px,env(safe-area-inset-left))}
  .ihint{bottom:16px}}
.card{min-width:0}
@media(max-width:480px){.modes{grid-template-columns:1fr}.mode{padding:9px 4px;font-size:15px}}