:root{--bg:#0b0b0a;--bg-elev:#131312;--bg-elev-2:#1a1a18;--bg-canvas:#1d1d1b;--paper:#fafaf6;--ink:#ededea;--ink-dim:#8a8a85;--ink-mute:#555550;--line:#25252220;--line-solid:#2b2b27;--line-strong:#3c3c36;--accent:#e8d9a8;--accent-hot:#f3e6b6;--accent-soft:#e8d9a81a;--accent-line:#e8d9a859;--live:#ff5435;--font-mono:-apple-system, BlinkMacSystemFont, "SF Mono", Menlo, monospace;--font-display:var(--font-mono);--rail-left-w:300px;--rail-right-w:380px;--rail-left-pad:22px;--rail-left-gap:14px;--hud-h:52px;--tab-h:56px;--r-sm:2px;--r-md:4px;--t-fast:.12s cubic-bezier(.4, 0, .2, 1);--t-mid:.22s cubic-bezier(.4, 0, .2, 1);--t-slow:.38s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;color:var(--ink);font-family:var(--font-mono);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;margin:0;padding:0;font-size:12px;line-height:1.4;overflow:hidden}a{color:var(--accent);transition:border-color var(--t-fast);border-bottom:1px solid #0000;text-decoration:none}a:hover,a:focus-visible{border-bottom-color:currentColor}button{font-family:inherit;font-size:inherit;cursor:pointer;color:inherit;background:0 0;border:none;padding:0}button:disabled{cursor:not-allowed;opacity:.45}input[type=checkbox]{accent-color:var(--accent)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--ink-mute)}#app{grid-template-columns:var(--rail-left-w) 1fr var(--rail-right-w);grid-template-rows:100vh;width:100vw;height:100vh;display:grid;overflow:hidden}.rail{background:var(--bg-elev);flex-direction:column;min-width:0;height:100%;display:flex;overflow:hidden}.rail-left{border-right:1px solid var(--line-solid)}.rail-right{border-left:1px solid var(--line-solid)}.rail-close{width:36px;height:36px;color:var(--ink-dim);border:1px solid var(--line-solid);border-radius:var(--r-md);background:var(--bg-elev-2);z-index:5;justify-content:center;align-items:center;font-size:24px;line-height:1;display:none;position:absolute;top:12px;right:12px}.rail-close:hover{color:var(--ink);border-color:var(--accent-line)}.rail-scroll{flex:1;padding:0;overflow:hidden auto}.rail-left .rail-scroll{flex-direction:column;min-height:0;display:flex}.rail-left .rail-scroll>.rail-section:last-child{margin-top:auto}.rail-left .rail-brand,.rail-left .rail-section{padding-left:var(--rail-left-pad);padding-right:var(--rail-left-pad)}.rail-brand{padding-top:var(--rail-left-pad);padding-bottom:var(--rail-left-pad);border-bottom:1px solid var(--line-solid);flex-direction:column;flex-shrink:0;gap:8px;display:flex}.rail-brand .brand-mark{letter-spacing:.02em;color:var(--ink);flex-wrap:wrap;align-items:baseline;gap:6px 10px;font-size:14px;font-weight:600;line-height:1.35;display:flex}.rail-brand .brand-mark .brand-version{font-family:var(--font-mono);letter-spacing:.14em;color:var(--ink-dim);text-transform:uppercase;border:1px solid var(--line-strong);border-radius:var(--r-sm);flex-shrink:0;padding:3px 7px;font-size:9px;font-weight:400}.rail-brand .brand-tag{letter-spacing:.05em;color:var(--ink-dim);max-width:36ch;font-size:10px;line-height:1.5}.rail-section{padding-top:var(--rail-left-pad);padding-bottom:var(--rail-left-pad);gap:var(--rail-left-gap);flex-direction:column;display:flex}.rail-section+.rail-section{border-top:1px solid var(--line-solid)}.rail-label{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.14em;color:var(--ink-dim);font-size:9px;font-weight:500;line-height:1.3}.rail-left a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent-line);text-underline-offset:.28em;transition:color var(--t-fast), text-decoration-color var(--t-fast);border-bottom:none;font-weight:500;text-decoration-thickness:1px}.rail-left a:hover{color:var(--accent);text-decoration-color:var(--accent);border-bottom:none}.rail-left a:focus-visible{outline:2px solid var(--accent-line);outline-offset:3px;border-radius:var(--r-sm);color:var(--accent);text-decoration-color:var(--accent);border-bottom:none}.rail-left a:visited{color:var(--ink);text-decoration-color:var(--accent-line)}.rail-left a:visited:hover{color:var(--accent);text-decoration-color:var(--accent)}.howto{margin:0;padding:0;text-align:left;direction:ltr;flex-direction:column;align-self:stretch;gap:12px;width:100%;margin-inline:0;padding-inline-start:0;list-style:none;display:flex}.howto li{color:var(--ink);text-align:left;grid-template-columns:2rem minmax(0,1fr);place-items:start stretch;column-gap:10px;font-size:11.5px;line-height:1.45;display:grid}.howto-index{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;color:var(--accent);text-align:left;white-space:nowrap;justify-self:start;width:100%;padding-top:.12em;font-size:11px;font-weight:600;line-height:1.45}.howto-body{text-align:left;flex-direction:column;gap:4px;width:100%;min-width:0;display:flex}.howto strong{color:var(--ink);font-weight:600;line-height:1.35}.howto em{color:var(--ink-dim);letter-spacing:.01em;font-size:10.5px;font-style:normal;line-height:1.45}.about-prose{color:var(--ink-dim);font-size:11px;line-height:1.65}.about-prose p{margin:0}.about-prose p+p{margin-top:10px}.about-prose strong{color:var(--ink);font-weight:500}.rail-credits{color:var(--ink-dim);flex-direction:column;gap:8px;font-size:10px;line-height:1.65;display:flex}.rail-credits span{display:block}#stage{background:var(--bg);flex-direction:column;min-width:0;display:flex;position:relative;overflow:hidden}#hud{min-height:var(--hud-h);border-bottom:1px solid var(--line-solid);background:var(--bg);flex:none;justify-content:space-between;align-items:center;gap:20px;padding:8px 22px;display:flex}#hud-stats-bar{flex-wrap:wrap;flex:1;justify-content:flex-end;align-items:center;gap:4px 22px;min-width:0;display:flex;overflow:hidden}.hud-brand{font-family:var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);white-space:nowrap;flex-shrink:0;align-items:center;gap:10px;font-size:10px;display:inline-flex}.hud-dot{background:var(--ink-mute);width:8px;height:8px;transition:background var(--t-fast);border-radius:50%;display:inline-block}.hud-dot[data-running=true]{background:var(--live);animation:1.6s ease-in-out infinite hud-pulse;box-shadow:0 0 0 3px #ff54352e}@keyframes hud-pulse{0%,to{box-shadow:0 0 0 3px #ff54352e}50%{box-shadow:0 0 0 6px #ff543500}}.hud-stat{align-items:baseline;gap:8px;min-width:0;display:inline-flex}.hud-stat-label{font-family:var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);font-size:9px}.hud-stat-value{font-family:var(--font-mono);color:var(--ink);font-variant-numeric:tabular-nums;white-space:nowrap;text-overflow:ellipsis;max-width:16ch;font-size:11px;overflow:hidden}.hud-stat-meter{align-items:center;gap:8px;display:inline-flex}.hud-meter{background:var(--line-strong);width:80px;height:4px;position:relative;overflow:hidden}.hud-meter-fill{background:var(--accent);width:0%;transition:width 60ms linear;position:absolute;inset:0 auto 0 0}#canvas-wrap{background:radial-gradient(circle at 50% 0%, #ffffff05, transparent 50%), var(--bg);flex:1;justify-content:center;align-items:center;min-height:0;padding:32px;display:flex}canvas{display:block;box-shadow:0 1px #ffffff0a,0 24px 60px #0000008c,0 4px 20px #00000059}#toolbar.toolbar-rail{background:0 0;border:0;flex-direction:column;align-items:stretch;gap:10px;padding:0;display:flex}.toolbar-rail-row{grid-template-columns:1fr 1fr;gap:8px;display:grid}.toolbar-rail-row .tool-btn{justify-content:center;width:100%}.toolbar-rail-row--single{grid-template-columns:1fr}.tweak-actions{flex-direction:column;gap:8px;margin-top:12px;display:flex}.tweak-actions .toolbar-rail-row .tool-btn,.tweak-actions>.tool-btn,.tool-btn-block{justify-content:center;width:100%}.tool-btn{font-family:var(--font-mono);letter-spacing:.06em;color:var(--ink);border:1px solid var(--line-solid);border-radius:var(--r-md);background:var(--bg-elev-2);transition:background var(--t-fast), border-color var(--t-fast), color var(--t-fast);white-space:nowrap;justify-content:center;align-items:center;gap:6px;padding:9px 14px;font-size:10.5px;display:inline-flex}.tool-btn:hover{border-color:var(--line-strong);background:#232220}.tool-btn.is-paused{color:var(--accent);border-color:var(--accent-line);background:var(--accent-soft)}.tool-btn.tool-primary{background:var(--accent);color:#1a1a17;border-color:var(--accent);font-weight:600}.tool-btn.tool-primary:hover{background:var(--accent-hot);border-color:var(--accent-hot)}.tool-check{font-family:var(--font-mono);color:var(--ink-dim);cursor:pointer;user-select:none;background:var(--bg);border:1px solid var(--line-solid);border-radius:var(--r-md);transition:border-color var(--t-fast), background var(--t-fast);align-items:center;gap:10px;padding:10px 12px;font-size:10px;display:flex}.tool-check:hover{border-color:var(--line-strong);background:var(--bg-elev-2)}.tool-check input{flex-shrink:0;margin:0}.rail-right .step{border-bottom:1px solid var(--line-solid);flex-direction:column;gap:14px;padding:24px 24px 28px;display:flex}.rail-right .step:last-child{border-bottom:none}.rail-right .step-head{align-items:baseline;gap:12px;display:flex}.rail-right .step-num{font-family:var(--font-mono);letter-spacing:.1em;color:var(--accent);text-transform:uppercase;font-size:12px;font-weight:600}.rail-right .step-title{letter-spacing:.02em;color:var(--ink);margin:0;font-size:13px;font-weight:600}.rail-right .step-desc{color:var(--ink-dim);margin:0;font-size:10.5px;line-height:1.55}.source-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.source-btn{text-align:left;background:var(--bg-elev-2);border:1px solid var(--line-solid);border-radius:var(--r-md);color:var(--ink);transition:background var(--t-fast), border-color var(--t-fast);flex-direction:column;align-items:flex-start;gap:4px;padding:14px;display:flex}.source-btn:hover{border-color:var(--line-strong);background:#201f1d}.source-btn.active{background:var(--accent-soft);border-color:var(--accent-line)}.source-btn .source-label{letter-spacing:.01em;color:var(--ink);font-size:12px;font-weight:500}.source-btn .source-hint{font-family:var(--font-mono);letter-spacing:.04em;color:var(--ink-dim);font-size:9.5px;line-height:1.4}.playback{background:var(--bg);border:1px solid var(--line-solid);border-radius:var(--r-md);flex-direction:column;gap:12px;margin-top:4px;padding:14px;display:flex}.playback[hidden]{display:none}.playback-row{grid-template-columns:1fr 1fr;gap:6px;display:grid}.playback-row--single{grid-template-columns:1fr}.playback-row--single .playback-btn{justify-content:center;width:100%}.playback-btn{font-family:var(--font-mono);letter-spacing:.04em;background:var(--bg-elev-2);color:var(--ink);border:1px solid var(--line-solid);border-radius:var(--r-sm);transition:background var(--t-fast), border-color var(--t-fast);justify-content:center;align-items:center;padding:9px 14px;font-size:11px;display:inline-flex}.playback-btn:hover:not(:disabled){border-color:var(--line-strong);background:#232220}.playback-btn.playback-primary{background:var(--accent);color:#1a1a17;border-color:var(--accent);font-weight:600}.playback-btn.playback-primary:hover:not(:disabled){background:var(--accent-hot);border-color:var(--accent-hot)}.scrub-label{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-dim);justify-content:space-between;align-items:baseline;margin-bottom:6px;font-size:9.5px;display:flex}.scrub-label .val{color:var(--ink);letter-spacing:.02em;text-transform:none;font-size:12px;font-weight:500}.mode-grid{grid-template-columns:1fr;gap:6px;display:grid}.mode-card{text-align:left;background:var(--bg-elev-2);border:1px solid var(--line-solid);border-radius:var(--r-md);color:var(--ink);transition:background var(--t-fast), border-color var(--t-fast);z-index:1;flex-direction:row;align-items:center;gap:8px;padding:10px 14px;display:flex;position:relative}.mode-card:hover{border-color:var(--line-strong);background:#201f1d}.mode-card:is(:hover,:focus-visible){z-index:8}.mode-card.active{background:var(--accent-soft);border-color:var(--accent-line)}.mode-card.active:before{content:"";background:var(--accent);width:2px;height:22px;position:absolute;top:50%;left:-1px;transform:translateY(-50%)}.mode-card[data-tooltip]:after{content:attr(data-tooltip);width:min(100vw - 40px,340px);max-height:min(46vh,220px);font-family:var(--font-mono);letter-spacing:.02em;text-transform:none;color:var(--ink-dim);background:var(--bg-elev-2);border:1px solid var(--line-strong);border-radius:var(--r-md);opacity:0;visibility:hidden;pointer-events:none;transition:opacity var(--t-fast), visibility var(--t-fast);padding:10px 12px;font-size:10px;font-weight:400;line-height:1.5;position:absolute;top:calc(100% + 6px);left:0;overflow-y:auto;box-shadow:0 10px 28px #00000080}.mode-card[data-tooltip]:is(:hover,:focus-visible):after{opacity:1;visibility:visible}.mode-name{letter-spacing:.02em;min-width:0;color:var(--ink);flex:1;font-size:13px;font-weight:600}.mode-info-hint{border:1px solid var(--line-strong);width:15px;height:15px;color:var(--ink-mute);background:var(--bg);pointer-events:none;transition:border-color var(--t-fast), color var(--t-fast), background var(--t-fast);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:8.5px;font-style:italic;font-weight:600;line-height:1;display:inline-flex}.mode-card:hover .mode-info-hint,.mode-card:focus-visible .mode-info-hint{border-color:var(--accent-line);color:var(--accent);background:var(--bg-elev-2)}.mode-card.active .mode-info-hint{border-color:var(--accent-line);color:var(--accent)}.mode-card.active .mode-name{color:var(--accent)}.mode-desc{font-family:var(--font-mono);letter-spacing:.02em;color:var(--ink-dim);font-size:10px;line-height:1.5}.tweak-grid{flex-direction:column;gap:16px;display:flex}.tweak-slider{flex-direction:column;gap:6px;display:flex}.tweak-slider .slabel{font-family:var(--font-mono);letter-spacing:.05em;color:var(--ink-dim);text-transform:uppercase;justify-content:space-between;align-items:baseline;font-size:11px;display:flex}.tweak-slider .slabel .val{color:var(--ink);font-variant-numeric:tabular-nums;text-transform:none;letter-spacing:.02em;font-size:13px;font-weight:500}input[type=range]{-webkit-appearance:none;appearance:none;cursor:pointer;background:0 0;width:100%;height:22px;margin:0}input[type=range]:disabled{cursor:not-allowed;opacity:.4}input[type=range]::-webkit-slider-runnable-track{background:var(--line-strong);border-radius:1px;height:2px}input[type=range]::-moz-range-track{background:var(--line-strong);border-radius:1px;height:2px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;background:var(--ink);width:14px;height:14px;transition:background var(--t-fast), transform var(--t-fast);border:0;border-radius:50%;margin-top:-6px}input[type=range]::-moz-range-thumb{background:var(--ink);cursor:pointer;border:0;border-radius:50%;width:14px;height:14px}input[type=range]:hover::-webkit-slider-thumb,input[type=range]:focus-visible::-webkit-slider-thumb{background:var(--accent);transform:scale(1.1)}input[type=range]:focus-visible{outline:none}.mobile-only{display:none!important}@media (width<=980px){:root{--hud-h:48px;--tab-btn-min-h:52px;--tab-bar-pad-y:12px;--tab-bar-pad-x:12px;--tab-bar-total:calc(var(--tab-bar-pad-y) * 2 + var(--tab-btn-min-h) + env(safe-area-inset-bottom,0px))}#app{grid-template-rows:1fr;grid-template-columns:1fr;position:relative}.rail{top:0;bottom:var(--tab-bar-total);z-index:40;width:min(94vw,460px);transition:transform var(--t-mid);border:none;position:fixed;box-shadow:0 16px 48px #0009}.rail-left{border-right:1px solid var(--line-solid);left:0;transform:translate(-105%)}.rail-right{border-left:1px solid var(--line-solid);right:0;transform:translate(105%)}.rail.is-open{transform:translate(0)}.rail-close{display:inline-flex}#stage{height:100vh;padding-bottom:var(--tab-bar-total)}#hud{gap:8px;padding:0 10px 0 14px}.hud-brand-text{display:none}#hud-stats-bar{flex-wrap:nowrap;gap:8px 12px}.hud-stat-label{display:none}.hud-stat-meter .hud-stat-label{display:inline}.hud-meter{width:50px}.hud-stat-value{max-width:10ch}.tool-btn{padding:6px 9px;font-size:10px}.tool-check{white-space:normal;justify-content:flex-start;gap:8px;padding:8px 10px}.tool-check span{min-width:0;line-height:1.35;display:inline}#canvas-wrap{padding:14px}#mobile-tabs{min-height:var(--tab-bar-total);padding:var(--tab-bar-pad-y) var(--tab-bar-pad-x) calc(var(--tab-bar-pad-y) + env(safe-area-inset-bottom,0px));z-index:30;background:linear-gradient(180deg, #0b0b0aa6 0%, var(--bg-elev) 38%);border-top:1px solid var(--accent-line);-webkit-tap-highlight-color:transparent;align-items:stretch;gap:10px;display:flex;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -12px 32px #0009,inset 0 -1px #e8d9a81a}.tab-btn{min-height:var(--tab-btn-min-h);font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent);border:1px solid var(--accent-line);transition:color var(--t-fast), background var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);background:#e8d9a824;border-radius:12px;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:3px;padding:8px 10px;font-size:11px;display:flex;box-shadow:0 3px 12px #00000073,inset 0 1px #e8d9a82e}.tab-btn:hover{color:var(--accent-hot);background:#e8d9a833;border-color:#e8d9a88c;box-shadow:0 4px 16px #00000080,inset 0 1px #f3e6b638}.tab-btn:focus-visible{color:var(--accent-hot);outline:2px solid var(--accent);outline-offset:3px}.tab-btn:active{transform:translateY(1px);box-shadow:0 2px 8px #00000080,inset 0 1px #e8d9a81f}.tab-btn.is-active{color:var(--accent-hot);background:#e8d9a842;border-color:#e8d9a8bf;box-shadow:0 2px 6px #00000059,0 0 0 1px #e8d9a840,inset 0 1px #f3e6b647}.tab-btn .tab-label{font-weight:600}.tab-btn .tab-meta{color:var(--accent);letter-spacing:.1em;text-transform:none;opacity:.62;transition:opacity var(--t-fast);font-size:9px}.tab-btn:hover .tab-meta,.tab-btn:focus-visible .tab-meta{opacity:.78}.tab-btn.is-active .tab-meta{opacity:.88}.rail-backdrop{inset:0;bottom:var(--tab-bar-total);-webkit-backdrop-filter:blur(2px);z-index:35;background:#0000008c;display:none;position:fixed}.rail-backdrop.is-visible{display:block}.mobile-only{display:flex!important}.desktop-only{display:none!important}}@media (width>=981px) and (width<=1240px){:root{--rail-left-w:260px;--rail-right-w:320px;--rail-left-pad:18px;--rail-left-gap:12px}.rail-right .step{padding:20px 18px}}@media (width>=981px){#mobile-tabs,.rail-backdrop,.rail-close{display:none}}.visually-hidden{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.file-input{display:none}@media (prefers-reduced-motion:reduce){*{transition-duration:.01ms!important;animation-duration:.01ms!important}}