.rtbf{--ink:#e8fbfc;--muted:#91b5ba;--cyan:#66edf2;--teal:#55e2bd;--line:rgba(122,224,230,.22);position:relative;overflow:hidden;max-width:1600px;margin:auto;color:var(--ink);background:#06141b;border:1px solid rgba(123,229,234,.35);border-radius:10px;box-shadow:0 28px 80px rgba(0,0,0,.36);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif}.rtbf *{box-sizing:border-box}.rtbf button,.rtbf input{font:inherit}.rtbf button{border:1px solid var(--line);border-radius:3px;background:linear-gradient(#17343e,#0a1d25);color:var(--ink);cursor:pointer;box-shadow:inset 0 1px rgba(255,255,255,.06)}.rtbf button:hover{border-color:var(--cyan);background:#14333d}.rtbf button:focus-visible,.rtbf input:focus-visible{outline:3px solid white;outline-offset:2px}
.rtbf-topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px;padding:10px 16px;background:linear-gradient(180deg,#d9dee0 0,#8f999c 6%,#28373c 9%,#101d22 100%);border-bottom:1px solid #52636a}.rtbf-brand{display:flex;align-items:center;gap:12px}.rtbf-logo{width:41px;height:41px;border:2px solid var(--cyan);border-radius:50%;position:relative;box-shadow:0 0 18px rgba(91,231,238,.28)}.rtbf-logo:before,.rtbf-logo:after{content:"";position:absolute;background:var(--cyan)}.rtbf-logo:before{width:25px;height:2px;left:6px;top:18px}.rtbf-logo:after{height:25px;width:2px;left:18px;top:6px}.rtbf-brand h1{margin:0;font-size:23px;letter-spacing:.02em}.rtbf-brand p{margin:1px 0 0;color:#a7c3c7;font-size:10px;letter-spacing:.12em;text-transform:uppercase}.rtbf-top-actions{display:flex;align-items:center;gap:7px}.rtbf-top-actions span{margin-right:8px;color:#9ab9bd;font:9px ui-monospace,monospace}.rtbf-top-actions button{min-height:34px;padding:7px 11px;font:700 9px ui-monospace,monospace;letter-spacing:.08em}
.rtbf-hud{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;padding:8px 10px;background:linear-gradient(#465157,#1b292e 12%,#0c171c);border-bottom:1px solid #536269}.rtbf-hud button{display:flex;align-items:center;min-height:55px;padding:7px 10px;text-align:left}.rtbf-hud button>b{display:grid;place-items:center;flex:0 0 33px;height:33px;margin-right:9px;border:1px solid #57727a;background:#071218;color:#8cdfe3;font:10px ui-monospace}.rtbf-hud button span,.rtbf-hud button small{display:block}.rtbf-hud button span{font-size:11px;font-weight:700}.rtbf-hud button small{margin-top:2px;color:#83a6aa;font-size:8px;font-weight:500}.rtbf-hud button[aria-current="step"]{border-color:#75edf2;background:linear-gradient(135deg,#1c5660,#102932);box-shadow:inset 0 -3px #64e9ed,0 0 16px rgba(80,223,229,.13)}
.rtbf-workspace{display:grid;grid-template-columns:minmax(225px,260px) minmax(400px,1fr) minmax(255px,305px);min-height:720px}.rtbf-controls,.rtbf-inspector{padding:15px;background:linear-gradient(90deg,rgba(15,32,39,.98),rgba(7,21,28,.96));overflow:auto}.rtbf-controls{border-right:1px solid #405159}.rtbf-inspector{border-left:1px solid #405159}.rtbf-main{min-width:0;display:flex;flex-direction:column}.rtbf-stagebar{display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:60px;padding:9px 13px;background:linear-gradient(#142a32,#07171e);border-bottom:1px solid var(--line)}.rtbf-stagebar span,.rtbf-stagebar b{display:block}.rtbf-stagebar span{color:var(--cyan);font:9px ui-monospace;letter-spacing:.1em}.rtbf-stagebar b{margin-top:3px;font-size:13px}.rtbf-stagebar p{max-width:54%;margin:0;color:#a3c1c4;font-size:10px;line-height:1.45;text-align:right}.rtbf-stage{position:relative;flex:1;min-height:590px;overflow:hidden;background:#041119}.rtbf-stage canvas{display:block;width:100%;height:100%;touch-action:none}.rtbf-overlay{position:absolute;inset:0;pointer-events:none}.rtbf-status{min-height:32px;background:#07151b;border-top:1px solid var(--line)}
.rtbf-panel-title{display:flex;justify-content:space-between;align-items:end;padding:7px 7px 10px;margin:-3px -3px 10px;border-bottom:1px solid #54636a}.rtbf-panel-title span{font:700 10px ui-monospace;letter-spacing:.08em}.rtbf-panel-title small{color:#88a9ae;font:8px ui-monospace}.rtbf fieldset{margin:0 0 13px;padding:0;border:0}.rtbf legend{margin-bottom:6px;color:#9dbbc0;font:9px ui-monospace;text-transform:uppercase;letter-spacing:.08em}.rtbf-choice{display:grid;grid-template-columns:repeat(2,1fr);gap:4px}.rtbf-choice button{min-height:46px;padding:7px;text-align:left}.rtbf-choice button b,.rtbf-choice button small{display:block}.rtbf-choice button b{font-size:10px}.rtbf-choice button small{margin-top:3px;color:#82a4a9;font-size:8px;line-height:1.2}.rtbf-choice button[aria-pressed="true"]{border-color:var(--cyan);background:linear-gradient(135deg,#23616a,#102c34);box-shadow:inset 0 -2px var(--cyan)}.rtbf-control{display:block;margin:13px 0}.rtbf-control>span{display:flex;justify-content:space-between;font-size:10px}.rtbf-control output{color:#7ff4f6;font:10px ui-monospace}.rtbf-control input{width:100%;margin:8px 0 3px;accent-color:#5de1e2}.rtbf-control small{display:block;color:#7f9ea3;font-size:8px;line-height:1.35}.rtbf-linked{display:flex;justify-content:space-between;margin:7px 0;padding:8px;border:1px solid var(--line);background:#07171e;font-size:9px}.rtbf-linked b{color:#8bf2ef;font-family:ui-monospace}.rtbf-primary{width:100%;min-height:42px;margin-top:10px;border-color:#76f5ed!important;background:linear-gradient(#54dfd4,#219f9d)!important;color:#03191d!important;font:800 10px ui-monospace!important;letter-spacing:.08em}.rtbf-button-row,.rtbf-console-keys{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin-top:11px}.rtbf-button-row button,.rtbf-console-keys button{min-height:38px;font:700 9px ui-monospace;letter-spacing:.05em}
.rtbf-irradiate{position:relative;width:100%;min-height:62px;margin-top:12px;padding:7px 8px 7px 58px!important;border:2px solid #606e72!important;background:linear-gradient(#444d50,#1a2427)!important;text-align:left;font:800 10px ui-monospace!important;letter-spacing:.06em}.rtbf-irradiate i{position:absolute;left:12px;top:10px;width:38px;height:38px;border:4px solid #69777a;border-radius:50%;background:radial-gradient(circle,#e14636 0 34%,#711b18 36% 55%,#242d30 57%);box-shadow:inset 0 0 7px #000,0 1px #abb}.rtbf-irradiate span{display:block}.rtbf-irradiate.is-on{border-color:#ffe67d!important;box-shadow:0 0 18px rgba(255,210,68,.25)}.rtbf-irradiate.is-on i{background:radial-gradient(circle,#fff580 0 27%,#ffb629 30% 52%,#4b3517 56%);box-shadow:0 0 18px #ffcd38,inset 0 0 5px #fff}
.rtbf-teach>span{color:var(--cyan);font:9px ui-monospace;letter-spacing:.12em}.rtbf-teach h2{margin:6px 0 10px;font-size:18px;line-height:1.2}.rtbf-teach p,.rtbf-dvh p{color:#c1dfe2;font-size:11px;line-height:1.55}.rtbf-formula{margin:15px 0;padding:13px;border-left:2px solid var(--cyan);background:rgba(83,225,226,.07);font:16px Georgia,serif}.rtbf-callout{padding:10px;border:1px solid rgba(255,185,103,.28);background:rgba(255,157,72,.07);color:#d9c7ad;font-size:10px;line-height:1.5}.rtbf-dvh{margin-top:20px;padding-top:14px;border-top:1px solid var(--line)}.rtbf-dvh h3{margin:0 0 8px;font:700 10px ui-monospace}.rtbf-dvh h3 small{color:#8aa9ad;font-weight:400}.rtbf-dvh canvas{width:100%;height:auto;background:#06151b;border:1px solid var(--line)}.rtbf-dose-key{position:absolute;right:12px;top:12px;display:flex;align-items:center;gap:6px;padding:6px 8px;border:1px solid var(--line);background:rgba(1,12,18,.85);font:8px ui-monospace}.rtbf-dose-key i{width:95px;height:8px;background:linear-gradient(90deg,#114dae,#00d7ee,#2ce28b,#ffe330,#ff7a21,#ef1a36)}
.rtbf-footer{display:flex;justify-content:space-between;gap:20px;padding:8px 13px;background:linear-gradient(#263337,#101a1e);border-top:1px solid #536067;color:#9eb9bd;font-size:9px}.rtbf-footer b{color:#d9f3f5}
@media(max-width:1050px){.rtbf-workspace{grid-template-columns:230px minmax(380px,1fr)}.rtbf-inspector{grid-column:1/-1;border-left:0;border-top:1px solid #405159}.rtbf-workspace{min-height:640px}.rtbf-stage{min-height:540px}.rtbf-inspector{display:grid;grid-template-columns:1fr 1fr;gap:20px}.rtbf-dvh{margin-top:0;padding-top:0;border-top:0}}
@media(max-width:720px){.rtbf-topbar{align-items:flex-start;flex-direction:column}.rtbf-top-actions{width:100%;flex-wrap:wrap}.rtbf-top-actions span{margin-right:auto}.rtbf-hud{grid-template-columns:1fr 1fr}.rtbf-workspace{display:flex;flex-direction:column}.rtbf-controls{border-right:0;border-bottom:1px solid #405159}.rtbf-stage{min-height:480px}.rtbf-inspector{display:block}.rtbf-stagebar{align-items:flex-start;flex-direction:column;gap:5px}.rtbf-stagebar p{max-width:none;text-align:left}.rtbf-footer{flex-direction:column;gap:3px}.rtbf-choice{grid-template-columns:repeat(2,1fr)}}
@media(max-width:430px){.rtbf{border-radius:0}.rtbf-topbar,.rtbf-controls,.rtbf-inspector{padding-left:10px;padding-right:10px}.rtbf-hud{padding:6px}.rtbf-hud button{padding:5px}.rtbf-hud button>b{display:none}.rtbf-stage{min-height:420px}.rtbf-top-actions span{width:100%}.rtbf-choice button{min-height:43px}}
@media(prefers-reduced-motion:reduce){.rtbf *{scroll-behavior:auto!important;transition:none!important}}
.rtbf-workspace{padding:10px 10px 0;gap:8px;background:linear-gradient(180deg,#788184 0,#303b3f 7px,#111b1f 8px,#1b272b 100%)}
.rtbf-controls,.rtbf-inspector,.rtbf-main{border:7px solid #202a2e!important;box-shadow:inset 0 0 0 1px #59676c,0 6px 18px rgba(0,0,0,.35)}
.rtbf-correlation,.rtbf-quiz{margin-top:16px;padding-top:13px;border-top:1px solid var(--line)}
.rtbf-correlation h3,.rtbf-quiz h3{margin:0 0 9px;color:#a6c5c8;font:700 9px ui-monospace;letter-spacing:.08em}
.rtbf-correlation>div{display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:4px;margin:5px 0;padding:8px;border:1px solid var(--line);background:#07171e;font-size:9px}
.rtbf-correlation b{color:var(--cyan)}.rtbf-correlation span{color:#bddadd}
.rtbf-quiz p{margin:8px 0;padding:8px;background:rgba(102,237,242,.05);border-left:2px solid var(--cyan)}
.rtbf-spectrum-control{pointer-events:auto;position:absolute;bottom:14px;left:20px;right:20px;padding:12px;background:#07171ef2;border:1px solid #74d9e6;color:#dffeff;font-size:12px}
.rtbf-spectrum-control p{margin:0 0 10px}.rtbf-spectrum-control p span{display:block;font-size:11px;margin-top:5px}.rtbf-spectrum-range{display:block;width:100%;height:30px;margin:0;cursor:ew-resize;accent-color:#fff;background:linear-gradient(90deg,#b293db 0%,#7298d8 27%,#895af0 34%,#55e090 38%,#ed5c52 40%,#a8465b 60%,#3a688f 80%,#31516c 100%)}
.rtbf-spectrum-bands{display:flex;flex-wrap:wrap;gap:4px;margin:8px 0}.rtbf-spectrum-bands button{flex:1;min-height:36px;padding:4px;font-size:11px}.rtbf-spectrum-control small{display:block;font-size:10px;line-height:1.5}
.rtbf-plan-stats{margin-top:18px;padding-top:12px;border-top:1px solid var(--line);font-size:12px}.rtbf-plan-stats h3{font-size:13px}.rtbf-plan-stats p{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}.rtbf-plan-stats small{display:block;color:#b3c9cf;line-height:1.5}.rtbf-status{padding:8px;font:11px ui-monospace;color:#d8eff3}.rtbf details{font-size:12px;line-height:1.5;margin-top:16px}.rtbf summary{cursor:pointer;color:#9df0f2}.rtbf-controls>p{font-size:12px;line-height:1.5}
@media(max-width:720px){.rtbf-main{order:0}.rtbf-controls{order:1}.rtbf-inspector{order:2}.rtbf-stage{min-height:620px}.rtbf button b{font-size:12px}.rtbf-control>span{font-size:12px}.rtbf-control small{font-size:11px}.rtbf-teach p,.rtbf-dvh p{font-size:13px}.rtbf-spectrum-control small{font-size:11px}}
.rtbf .rtbf-main{margin:0;width:100%;max-width:none;min-width:0;align-self:stretch}
.rtbf-stage canvas{position:absolute;inset:0}
.rtbf-spectrum-range{appearance:none;background:transparent}
.rtbf-spectrum-range::-webkit-slider-runnable-track{height:10px;background:linear-gradient(90deg,#b293db,#7298d8 27%,#895af0 34%,#55e090 38%,#ed5c52 40%,#a8465b 60%,#3a688f 80%,#31516c)}
.rtbf-spectrum-range::-webkit-slider-thumb{appearance:none;width:12px;height:26px;margin-top:-8px;background:#fff;border:2px solid #153740;border-radius:3px}
.rtbf-spectrum-range::-moz-range-track{height:10px;background:linear-gradient(90deg,#b293db,#7298d8,#55e090,#ed5c52,#31516c)}