:root{color-scheme:dark;--ink:#e7f6ee;--muted:#84958d;--dark:#09100d;--panel:#101915;--line:#29362f;--acid:#b8ff3d;--cyan:#4fffe1;--danger:#ff5978;background:var(--dark);color:var(--ink);font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace}*{box-sizing:border-box}body{background:linear-gradient(#b8ff3d06 1px,#0000 1px) 0 0/32px 32px,linear-gradient(90deg,#b8ff3d06 1px,#0000 1px) 0 0/32px 32px,radial-gradient(circle at 12% 6%,#4fffe11a,#0000 31%),#09100d;min-width:320px;min-height:100vh;margin:0}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}main{width:min(1480px,100%);margin:0 auto;padding:34px clamp(18px,4vw,64px) 26px}.masthead{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-end;gap:24px;padding-bottom:32px;display:flex}.eyebrow,.step-label{color:var(--acid);letter-spacing:.17em;text-transform:uppercase;font-size:11px}h1{letter-spacing:-.075em;margin:7px 0 8px;font-size:clamp(44px,7vw,88px);font-weight:400;line-height:.9}h1 span{color:var(--acid)}.lede{color:#adbbb4;max-width:620px;margin:0;font-family:system-ui,sans-serif;font-size:16px}.signal{color:var(--cyan);letter-spacing:.12em;white-space:nowrap;align-items:center;gap:10px;font-size:11px;display:flex}.signal i{background:var(--cyan);width:9px;height:9px;box-shadow:0 0 18px var(--cyan);border-radius:50%;animation:2.2s infinite pulse}@keyframes pulse{50%{opacity:.35}}.control-strip{align-items:flex-end;gap:12px;padding:20px 0;display:flex}.control-strip label{gap:7px;margin-right:auto;display:grid}.control-strip label>span,.remainder-field span{color:var(--muted);letter-spacing:.08em;font-size:11px}select,input{color:var(--ink);background:#0b120f;border:1px solid #3b4a42;outline:none}select{min-width:230px;padding:12px 38px 12px 13px}select:focus,input:focus{border-color:var(--cyan);box-shadow:0 0 0 2px #4fffe11f}.button{border:1px solid var(--line);min-height:42px;color:var(--ink);background:0 0;padding:10px 16px}.button.primary{color:#07100b;background:var(--acid);border-color:var(--acid);font-weight:700}.button.primary b{padding-left:18px}.button.quiet:hover{border-color:var(--muted)}.round-grid{grid-template-columns:minmax(0,1fr) 370px;gap:18px;display:grid}.panel{border:1px solid var(--line);background:#101915f0}.scope{min-width:0;padding:clamp(18px,3vw,32px)}.panel-head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}h2{letter-spacing:-.03em;margin:7px 0 0;font-family:system-ui,sans-serif;font-size:23px}.round-tag{color:var(--muted);border:1px solid #39483f;padding:8px 10px;font-size:11px}.payload-line{border:1px solid var(--line);grid-template-columns:repeat(3,1fr);margin:28px 0 22px;display:grid}.payload-line>div{min-width:0;padding:14px}.payload-line>div+div{border-left:1px solid var(--line)}.payload-line small{color:var(--muted);margin-bottom:8px;font-size:10px;display:block}.payload-line code{color:var(--cyan);word-break:break-all;font-size:clamp(14px,2vw,18px)}.chart-shell{background:#0a120e;border:1px solid #223128;position:relative;overflow:hidden}.chart-shell:after{content:"";pointer-events:none;background:repeating-linear-gradient(0deg,#0000 0 3px,#ffffff03 3px 4px);position:absolute;inset:0}.chart-key{color:var(--muted);gap:18px;padding:13px 16px 0;font-size:10px;display:flex}.dot{border-radius:50%;width:8px;height:8px;margin-right:7px;display:inline-block}.dot.observed{background:var(--danger)}.dot.truth{background:var(--cyan)}#trace-chart{width:100%;height:auto;min-height:250px;display:block}.chart-hint{color:#718178;margin:0;font-size:10px;position:absolute;bottom:10px;right:14px}.grid-line{stroke:#213027;stroke-width:1px;stroke-dasharray:3 7}.axis-text{fill:#64736b;font-size:11px}.observed-line{fill:none;stroke:var(--danger);stroke-width:2.5px}.truth-line{fill:none;stroke:var(--cyan);stroke-width:2.5px;stroke-dasharray:7 5}.point{fill:#0a120e;stroke:var(--danger);stroke-width:3px;cursor:pointer;transition:r .12s,fill .12s}.point:hover,.point.selected{r:9px;fill:var(--danger)}.point.correct-point{stroke:var(--cyan)}.point.wrong-pick{stroke:#ffc15a;fill:#ffc15a}.timeline{scrollbar-color:#405148 transparent;gap:4px;padding:13px 0 2px;display:flex;overflow-x:auto}.tick{min-width:44px;color:var(--muted);text-align:center;border-top:2px solid #39483f;flex:1 0 44px;padding:8px 4px;font-size:9px}.tick b{color:var(--ink);margin-bottom:5px;font-size:10px;display:block}.tick.pad{border-color:#f0be54}.tick.xor{border-color:var(--acid)}.tick.selected{color:var(--danger);background:#ff59781f}.answer-column{align-content:start;gap:18px;display:grid}.answer-panel,.stats-panel{padding:24px}.selection-readout{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:27px 0 18px;padding:14px 0}.selection-readout small{color:var(--muted);margin-bottom:6px;font-size:10px;display:block}.selection-readout strong{color:var(--danger);font-size:18px}.remainder-field{gap:8px;display:grid}.remainder-field input{width:100%;color:var(--cyan);letter-spacing:.2em;padding:13px;font-size:21px}.field-help,.stats-note{color:var(--muted);font-family:system-ui,sans-serif;font-size:11px;line-height:1.55}.field-help.error{color:var(--danger)}.button.reveal{background:var(--cyan);color:#07110e;border:0;width:100%;margin-top:13px;font-weight:800}.result{border-left:3px solid var(--danger);background:#0b130f;margin-top:16px;padding:15px;font-family:system-ui,sans-serif;font-size:13px;line-height:1.6}.result.success{border-color:var(--acid)}.result strong{color:var(--acid)}.result code{color:var(--cyan)}.compact{align-items:center}.compact h2{font-size:18px}#total-rounds{color:var(--cyan);font-size:12px}.stats{gap:17px;margin-top:23px;display:grid}.stat-row{grid-template-columns:46px 1fr 43px;align-items:center;gap:10px;font-size:11px;display:grid}.stat-row>span{color:#c6d1cb}.bar{background:#25332c;height:7px;overflow:hidden}.bar i{background:var(--acid);height:100%;display:block}.stat-row b{text-align:right;color:var(--acid)}footer{color:#5f7067;letter-spacing:.1em;justify-content:space-between;gap:20px;padding:25px 0 0;font-size:10px;display:flex}footer p{letter-spacing:0;margin:0;font-family:system-ui,sans-serif}@media (width<=900px){.round-grid{grid-template-columns:1fr}.answer-column{grid-template-columns:repeat(2,1fr)}}@media (width<=620px){main{padding-top:23px}.masthead{align-items:flex-start}.signal{display:none}.control-strip{grid-template-columns:1fr 1fr;display:grid}.control-strip label{grid-column:1/-1;margin:0}select{width:100%}.button{padding-inline:10px}.payload-line{grid-template-columns:1fr}.payload-line>div+div{border-left:0;border-top:1px solid var(--line)}.answer-column{grid-template-columns:1fr}#trace-chart{min-width:650px}.chart-shell{overflow-x:auto}.chart-hint{width:max-content;margin:0 0 9px 12px;display:block;position:sticky;left:12px}footer{display:block}footer p{margin-top:7px}}