:root{--void:#040916;--start-room:radial-gradient(ellipse at 50% 46%, #7cc8f51f, transparent 40%), radial-gradient(ellipse at 50% 70%, #16294acc, transparent 65%), var(--void);--line:#ffffff1a;--line-strong:#bee6ff99;--ice:#f2f8ff;--ice-rgb:124, 200, 245;--text:#e2e9f3;--muted:#8593a8;--safe:#3ce68c;--play-ink:#0b1730;--play-light:#2f9be8;--play-hot:#ff8a4a;--panel:#0409169e;--radius:14px;--halo:0 12px 40px #00000073;--halo-strong:0 0 18px rgba(var(--ice-rgb), .28);--primary-fill:#7cc8f529;--primary-glow:0 0 18px rgba(var(--ice-rgb), .18);--blur:blur(18px) saturate(140%);--title:"Orbitron", "Exo 2", system-ui, sans-serif;--display:"Exo 2", system-ui, sans-serif;--mono:"Orbitron", "Exo 2", ui-monospace, monospace;--gutter:16px;--safe-top:max(var(--gutter), env(safe-area-inset-top));--safe-right:max(var(--gutter), env(safe-area-inset-right));--safe-bottom:max(var(--gutter), env(safe-area-inset-bottom));--safe-left:max(var(--gutter), env(safe-area-inset-left));--btn-height:40px;--card-width:380px;--screen-height:100vh;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}@supports (height:100dvh){:root{--screen-height:100dvh}}*{box-sizing:border-box}::-webkit-scrollbar{display:none}:focus{outline:none}:focus-visible{outline:none}html,body{touch-action:pan-x pan-y;background:var(--start-room);height:100%;color:var(--text);font-family:var(--display);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none;margin:0;overflow:hidden}#scene{touch-action:none;width:100%;height:100%;display:block;position:fixed;top:0;bottom:0;left:0;right:0}#ui{pointer-events:none;position:fixed;top:0;bottom:0;left:0;right:0}h1,h2,p{margin:0}.slate{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);-webkit-backdrop-filter:var(--blur);box-shadow:var(--halo), inset 0 1px 0 #ffffff0d;pointer-events:auto;flex-direction:column;gap:12px;padding:18px 20px;display:flex;position:relative}.label{letter-spacing:.24em;text-transform:uppercase;color:var(--muted);align-items:center;gap:8px;font-size:11px;font-weight:600;display:flex}.hint{color:var(--muted);font-size:13px;line-height:1.45}.number{font-family:var(--mono);color:var(--ice)}button{font:inherit;color:inherit;cursor:pointer}.btn{min-height:var(--btn-height);letter-spacing:.18em;text-transform:uppercase;color:var(--text);border:1px solid var(--line);background:#ffffff0a;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:8px 16px;font-size:12px;font-weight:600;transition:border-color .12s,box-shadow .12s;display:inline-flex}.btn:hover:not(:disabled){border-color:var(--line-strong);box-shadow:var(--halo-strong)}.btn:focus-visible{border-color:var(--line-strong);box-shadow:var(--halo-strong)}.btn:disabled{opacity:.35;cursor:default}.btn.primary{background:var(--primary-fill);border-color:rgba(var(--ice-rgb), .55);color:#fff;box-shadow:var(--primary-glow)}.btn.selected{border-color:var(--line-strong);background:#beebff47}.btn.square{width:var(--btn-height);padding:0}.btn .icon{fill:currentColor;width:20px;height:20px}.actions{gap:10px;display:flex}.actions>.btn{flex:1 1 0}.field{width:100%;min-height:var(--btn-height);font:600 15px var(--display);color:var(--ice);border:1px solid var(--line);-webkit-user-select:text;user-select:text;background:#02061080;border-radius:12px;padding:8px 12px}.field:focus{border-color:var(--line-strong);box-shadow:var(--halo)}.code-field{text-align:center;text-transform:uppercase}.copy-button{position:relative}.copy-button svg{display:none}.copy-button.copied span{visibility:hidden}.copy-button.copied svg{width:24px;height:24px;fill:var(--safe);margin:auto;display:block;position:absolute;top:0;bottom:0;left:0;right:0}.short-label{display:none}@media (max-width:500px){.long-label{display:none}.short-label{display:inline}}.switch-row{background:0 0;border:none;justify-content:space-between;align-items:center;gap:16px;width:100%;padding:4px 0;display:flex}.switch-row .label:after{content:none}.switch{border:2px solid var(--line);background:#0412248c;border-radius:15px;flex:none;width:72px;height:30px;transition:background .12s,border-color .12s,box-shadow .12s;position:relative}.switch-knob{background:var(--muted);border-radius:50%;width:22px;height:22px;transition:transform .12s,background .12s;position:absolute;top:2px;left:2px}.switch-text{letter-spacing:.04em;text-transform:uppercase;color:var(--muted);font-size:11px;font-weight:700;line-height:26px;position:absolute;top:0;right:9px}.switch-row[aria-checked=true] .switch{background:var(--primary-fill);border-color:var(--ice);box-shadow:var(--primary-glow)}.switch-row[aria-checked=true] .switch-knob{background:#fff;transform:translate(42px)}.switch-row[aria-checked=true] .switch-text{color:#fff;left:9px;right:auto}.switch-row:hover .switch{border-color:var(--line-strong);box-shadow:var(--halo-strong)}.switch-row:focus-visible .switch{border-color:var(--line-strong);box-shadow:var(--halo-strong)}.screen{padding:var(--safe-top) var(--safe-right) var(--safe-bottom) var(--safe-left);z-index:4;justify-content:center;align-items:center;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.screen-body{--spill:56px;width:max-content;max-width:calc(100% + 2 * var(--spill));max-height:calc(100% + 2 * var(--spill));margin:calc(-1 * var(--spill));padding:var(--spill);pointer-events:auto;flex-direction:column;align-items:center;gap:26px;display:flex;overflow-y:auto}.menu{width:var(--card-width);max-width:100%}.in-place{flex-direction:column;gap:12px;animation:.22s ease-out card-in;display:flex}@keyframes card-in{0%{opacity:0;transform:translateY(12px)scale(.98)}}.notice-icon{justify-content:center;display:flex}.notice-icon svg{width:40px;height:40px;fill:rgb(var(--ice-rgb));filter:drop-shadow(0 0 10px rgba(var(--ice-rgb), .6));display:block}.notice-heading{font:500 1.15rem var(--title);letter-spacing:.08em;text-align:center;color:#fff}.notice{width:var(--card-width);align-items:stretch;max-width:100%}.logo{font-family:var(--title);letter-spacing:.6em;color:var(--ice);text-shadow:0 0 24px rgba(var(--ice-rgb), .45);padding-left:.6em;font-size:clamp(2.2rem,11vw,4.2rem);font-weight:500;line-height:1}.tagline{letter-spacing:.32em;text-transform:uppercase;text-align:center;color:var(--muted);margin-top:-12px;padding-left:.32em;font-size:11px;font-weight:600}.pulse-dot{background:var(--ice);width:12px;height:12px;box-shadow:0 0 16px rgba(var(--ice-rgb), .9);border-radius:50%;margin:4px auto;animation:1.2s ease-in-out infinite pulse}@keyframes pulse{50%{opacity:.35;transform:scale(.7)}}.hud{pointer-events:none;z-index:3;position:fixed;top:0;bottom:0;left:0;right:0}.top-left{top:var(--safe-top);left:var(--safe-left);flex-direction:column;align-items:center;gap:10px;display:flex;position:absolute}.hud .btn[hidden]{display:none}.hud .btn{background:var(--panel);-webkit-backdrop-filter:var(--blur)}.ball-code{pointer-events:auto;gap:12px}.ball-code .number{letter-spacing:.25em;font-size:20px}.ball-code-label{color:var(--muted)}.corner{top:var(--safe-top);right:var(--safe-right);pointer-events:auto;gap:10px;display:flex;position:absolute}.panel{top:calc(var(--safe-top) + var(--btn-height) + 14px);width:min(300px, calc(100vw - 2 * var(--gutter)));position:absolute}.panel.settings{right:var(--safe-right);max-height:calc(var(--screen-height) - var(--safe-top) - var(--btn-height) - 14px - var(--safe-bottom));overflow-y:auto}.options{grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;gap:8px;display:grid}.options .btn{padding-inline-start:8px;padding-inline-end:8px}.panel.invite{left:var(--safe-left);align-items:stretch}.room-code{font:40px var(--mono);letter-spacing:.3em;text-align:center;color:var(--ice);text-shadow:0 0 14px rgba(var(--ice-rgb), .7);padding-left:.3em}.qr{background:#fff;border-radius:2px;width:100%;max-width:200px;margin:0 auto}.qr svg{width:100%;height:auto;display:block}.hud-line{letter-spacing:.22em;text-transform:uppercase;color:var(--ice);font-size:11px;font-weight:600;transition:color .3s}.bottom-middle{bottom:var(--safe-bottom);min-height:var(--btn-height);white-space:nowrap;align-items:center;display:flex;position:absolute;left:50%;transform:translate(-50%)}.flood-lit .hud-line{color:var(--panel)}.ball-row{min-height:var(--btn-height);border:1px solid var(--line);border-radius:12px;justify-content:space-between;align-items:center;gap:12px;padding:8px 12px;display:flex}.ball-row-code{font:15px var(--mono);letter-spacing:.3em;color:var(--ice)}.ball-row-about{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:6px;display:flex}.ball-row-level{color:var(--muted);margin-left:4px;font-size:12px}.who-dot{background:var(--player);width:9px;height:9px;box-shadow:0 0 8px var(--player);border-radius:50%}.who-dot.away{opacity:.4}.hud-line:empty{display:none}.big-number{font:500 clamp(5rem, 26vw, 11rem) / 1 var(--title);color:var(--ice);text-shadow:0 0 30px rgba(var(--ice-rgb), .5)}.big-number.bump{animation:bump var(--bump-ms,.26s) ease-out}@keyframes bump{40%{transform:scale(1.14)}}.screen.wind{pointer-events:none;flex-direction:column;justify-content:flex-end}.wind-surface{justify-content:center;align-items:center;display:flex;position:absolute;top:0;bottom:0;left:0;right:0}body.winding #scene{cursor:grab}body.winding #scene:active{cursor:grabbing}.wind-ready{pointer-events:auto;width:min(var(--card-width), 100%);margin-bottom:24px;position:relative}.number-flash{z-index:5;pointer-events:none;justify-content:center;align-items:center;animation:ease-in-out both number-flash;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}@keyframes number-flash{0%{opacity:0;transform:scale(.7)}20%,75%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(1.15)}}.flood{z-index:2;pointer-events:none;position:fixed;top:0;bottom:0;left:0;right:0}.flood>div:not(.flood-stage){opacity:0;transition-property:opacity,transform;transition-timing-function:ease-out;position:absolute;top:0;bottom:0;left:0;right:0}.flood>div.flood-burst{background:radial-gradient(circle,#fff 0%,#f2fbff 16%,#cdeaff 40%,#96d2ffd9 70%,#96d2ff00 100%);border-radius:50%;width:220vmax;height:220vmax;margin:-110vmax 0 0 -110vmax;top:50%;bottom:auto;left:50%;right:auto;transform:scale(.35)}.flood>div.flood-burst.poured{transform:scale(1)}.flood-backdrop{background:radial-gradient(at 50% 38%,#ffffffe6,#0000 60%),radial-gradient(at 50% 120%,#78bef5b3,#0000 70%),linear-gradient(#e3f4ff 0%,#c4e4fb 55%,#9fcdf1 100%)}.flood-dawn{background:radial-gradient(circle,#fff 0%,#fffaf0 40%,#f1f9ff 100%)}.flood-stage{padding:var(--safe-top) var(--safe-right) var(--safe-bottom) var(--safe-left);justify-content:center;align-items:center;display:flex;position:absolute;top:0;bottom:0;left:0;right:0}.flood-stage>*{pointer-events:auto;animation:.42s ease-out both card-in}.challenge{background:#040916cc;gap:16px;width:min(440px,100%);padding:22px 22px 26px;box-shadow:0 20px 60px #00000059,inset 0 1px #ffffff0d}.watching{letter-spacing:.08em;color:var(--text);font-size:15px;font-weight:600}.game-here{font:500 clamp(1.1rem, 4.6vw, 1.5rem) var(--title);letter-spacing:.12em;color:#fff}.time-line{background:linear-gradient(90deg, #fff, rgb(var(--ice-rgb)));height:3px;box-shadow:0 0 10px rgba(var(--ice-rgb), .9);transform-origin:0;transition-property:transform;transition-timing-function:linear;position:absolute;bottom:0;left:0;right:0}.challenge-stage{padding:calc(var(--safe-top) + var(--btn-height) + 12px) var(--safe-right) calc(var(--safe-bottom) + 28px) var(--safe-left);flex-direction:column;align-items:center;gap:12px;display:flex;position:absolute;top:0;bottom:0;left:0;right:0}.challenge-bar{background:#040916d1;flex:none;gap:6px;width:min(440px,100%);padding:12px 18px 14px;overflow:hidden}.challenge-bar .label .number{order:2;margin-left:auto}.play-area{flex-direction:column;flex:1;justify-content:center;align-items:center;width:100%;min-height:0;display:flex;position:relative}.play-canvas{touch-action:none;width:100%;height:100%;position:absolute;top:0;bottom:0;left:0;right:0}.play-ask{z-index:1;font:500 clamp(1rem, 4.4vw, 1.35rem) var(--title);letter-spacing:.16em;text-align:center;text-transform:uppercase;color:var(--play-ink);pointer-events:none;position:absolute;top:4px;left:0;right:0}.math{flex-direction:column;align-items:center;gap:clamp(20px,6vh,48px);width:min(460px,100%);display:flex}.math-sum{font:500 clamp(2.4rem, 12vw, 4.6rem) / 1 var(--title);letter-spacing:.06em;color:var(--play-ink);text-shadow:0 0 28px rgba(var(--ice-rgb), .9);white-space:nowrap}.math-choices{grid-template-columns:1fr 1fr;gap:14px;width:100%;display:grid}.math-choice{min-height:64px;font:500 clamp(1.3rem, 6vw, 1.8rem) var(--title);letter-spacing:.08em;color:#fff;border-color:rgba(var(--ice-rgb), .35);border-radius:var(--radius);background:#040916d1}.math-choice:disabled{opacity:1}.math-choice.wrong{border-color:var(--play-hot);color:var(--play-hot);opacity:.55;animation:.36s ease-out shake}@keyframes shake{20%,60%{transform:translate(-8px)}40%,80%{transform:translate(8px)}}.trace-bar{background:#0b173024;border-radius:999px;width:min(320px,70%);height:6px;margin-left:max(-160px,-35%);position:absolute;bottom:6px;left:50%;overflow:hidden}.trace-fill{background:linear-gradient(90deg, var(--play-light), rgb(var(--ice-rgb)));height:100%;box-shadow:0 0 10px rgba(var(--ice-rgb), .9);transform-origin:0;transition:transform .12s linear;transform:scaleX(0)}.arcade-bombs{letter-spacing:.3em;text-align:center;color:var(--play-light);pointer-events:none;font-size:14px;position:absolute;bottom:6px;left:0;right:0}.arcade-help{letter-spacing:.08em;text-align:center;color:#0b173099;pointer-events:none;font-size:12px;font-weight:600;transition:opacity .6s;position:absolute;bottom:30px;left:0;right:0}.arcade-help.gone{opacity:0}.solvers{flex-direction:column;gap:6px;display:flex}.solver{justify-content:space-between;font-size:15px;display:flex}@media (prefers-reduced-motion:reduce){.pulse-dot,.flood-stage>*{animation:none}}