#spx-tool{--spx-bg:var(--paper,#fff);--spx-surface:var(--tint,#f5f7fa);--spx-surface2:var(--card,#fff);--spx-border:var(--line,#dfe5ec);--spx-text:var(--ink,#101828);--spx-muted:var(--muted,#667085);--spx-accent:var(--teal,#0e7490);--spx-accent2:#0f766e;--spx-danger:#b42318;--spx-warn:#b54708;--spx-good:#067647;--spx-shadow:0 8px 26px rgba(16,24,40,.08);--spx-gamma:#e8b9312d;--spx-ag:#d1793a2b;--spx-gc:#7a4dbf27;--spx-ac:#3a7dd123;--spx-alpha:#3aa66b2c;color:var(--spx-text);background:var(--spx-bg);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;max-width:1240px;margin:0 auto;padding:16px;box-sizing:border-box}
#spx-tool *,#spx-tool *::before,#spx-tool *::after{box-sizing:inherit}.spx-back{display:inline-block;margin:0 0 10px;color:var(--spx-muted);font-size:.86rem;font-weight:700;text-decoration:none}.spx-back:hover{color:var(--spx-accent)}#spx-tool h1{font-size:clamp(1.45rem,2.3vw,2rem);line-height:1.2;margin:0 0 5px}.spx-badge{display:inline-block;margin-left:8px;padding:2px 9px;border:1px solid currentColor;border-radius:999px;color:var(--spx-accent);font-size:.66rem;letter-spacing:.05em;text-transform:uppercase;vertical-align:4px}.spx-subtitle{max-width:1000px;margin:0 0 14px;color:var(--spx-muted);font-size:.96rem}.spx-disclaimer{margin:0 0 14px;padding:10px 12px;border:1px solid color-mix(in srgb,var(--spx-warn) 45%,var(--spx-border));border-left:4px solid var(--spx-warn);border-radius:9px;background:color-mix(in srgb,var(--spx-warn) 8%,var(--spx-bg));font-size:.84rem}.spx-tabs{display:flex;gap:6px;overflow:auto;margin:0 0 14px;padding:4px;border:1px solid var(--spx-border);border-radius:12px;background:var(--spx-surface)}.spx-tabs button{flex:1 0 auto;min-height:42px;padding:8px 12px;border:0;border-radius:9px;background:transparent;color:var(--spx-muted);font:inherit;font-size:.86rem;font-weight:800;cursor:pointer}.spx-tabs button[aria-selected="true"]{background:var(--spx-bg);color:var(--spx-accent);box-shadow:0 1px 5px rgba(16,24,40,.1)}.spx-panel[hidden]{display:none!important}.spx-grid-2{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(290px,.85fr);gap:14px}.spx-card{border:1px solid var(--spx-border);border-radius:12px;background:var(--spx-surface2);box-shadow:var(--spx-shadow)}.spx-card-pad{padding:14px}.spx-card h2,.spx-card h3{margin:0}.spx-card-title{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:10px}.spx-card-title h2{font-size:1.04rem}.spx-card-title p{margin:2px 0 0;color:var(--spx-muted);font-size:.82rem}.spx-toolbar{display:flex;flex-wrap:wrap;gap:7px;align-items:center}.spx-btn,.spx-segmented button,.spx-icon-btn,.spx-preset{min-height:38px;border:1px solid var(--spx-border);border-radius:8px;background:var(--spx-bg);color:var(--spx-text);font:inherit;font-size:.82rem;font-weight:750;cursor:pointer}.spx-btn{padding:7px 11px}.spx-btn.primary{border-color:var(--spx-accent);background:var(--spx-accent);color:#fff}.spx-btn.danger{color:var(--spx-danger)}.spx-btn:disabled{opacity:.45;cursor:not-allowed}.spx-segmented{display:inline-flex;padding:3px;border:1px solid var(--spx-border);border-radius:9px;background:var(--spx-surface)}.spx-segmented button{min-height:32px;padding:5px 9px;border:0;background:transparent;color:var(--spx-muted)}.spx-segmented button[aria-pressed="true"]{background:var(--spx-accent);color:#fff}.spx-btn:focus-visible,.spx-segmented button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,.spx-tabs button:focus-visible{outline:2px solid var(--spx-accent);outline-offset:2px}.spx-field label{display:block;margin-bottom:4px;font-size:.78rem;font-weight:750}.spx-hint{color:var(--spx-muted);font-weight:450}.spx-field input,.spx-field select,.spx-field textarea{width:100%;min-height:40px;padding:7px 9px;border:1px solid var(--spx-border);border-radius:8px;background:var(--spx-bg);color:var(--spx-text);font:inherit}.spx-fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.spx-checks{display:flex;flex-wrap:wrap;gap:10px}.spx-checks label{display:flex;align-items:center;gap:6px;color:var(--spx-muted);font-size:.8rem;font-weight:650}.spx-points{display:grid;gap:8px;margin-top:10px}.spx-point-row{--pc:var(--spx-accent);display:grid;grid-template-columns:62px minmax(125px,1fr) minmax(145px,1fr) auto;gap:8px;align-items:end;padding:9px;border:1px solid var(--spx-border);border-radius:10px;background:var(--spx-bg)}.spx-point-row.active{border-color:var(--pc);box-shadow:0 0 0 2px color-mix(in srgb,var(--pc) 20%,transparent)}.spx-point-id{align-self:center;display:flex;align-items:center;gap:7px;font-size:.82rem;font-weight:850}.spx-swatch{width:12px;height:12px;border-radius:50%;background:var(--pc);box-shadow:0 0 0 2px var(--spx-bg),0 0 0 3px var(--spx-border)}.spx-icon-btn{padding:7px 9px;color:var(--spx-danger)}.spx-svg-wrap{position:relative;border-top:1px solid var(--spx-border);background:var(--spx-bg)}#spx-diagram,#spx-kinetics-svg,#spx-cycle-svg{display:block;width:100%;height:auto;touch-action:none}.spx-axis{font-size:13px;fill:var(--spx-text)}.spx-tick{font-size:10.5px;fill:var(--spx-muted)}.spx-region-label{font-size:14px;font-weight:750;fill:var(--spx-text);opacity:.88}.spx-gridline{stroke:var(--spx-border);stroke-width:1;opacity:.65}.spx-boundary{fill:none;stroke:var(--spx-text);stroke-width:1.7}.spx-boundary-hit{fill:none;stroke:transparent;stroke-width:14;cursor:help}.spx-marker{stroke:#fff;stroke-width:1.8;cursor:grab}.spx-marker.dragging{cursor:grabbing}.spx-point-label{font-size:11px;font-weight:850;fill:var(--spx-text);paint-order:stroke;stroke:var(--spx-bg);stroke-width:3px}.spx-tie{stroke:var(--spx-accent);stroke-width:1.6;stroke-dasharray:5 4}.spx-path{fill:none;stroke:var(--spx-accent);stroke-width:2.4;stroke-dasharray:6 4}.spx-crosshair{stroke:var(--spx-accent);stroke-width:1;stroke-dasharray:4 4;opacity:.75}.spx-tooltip{position:absolute;z-index:5;max-width:270px;padding:8px 10px;border:1px solid var(--spx-border);border-radius:8px;background:var(--spx-bg);box-shadow:var(--spx-shadow);font-size:.78rem;pointer-events:none}.spx-tooltip[hidden]{display:none}.spx-side-stack{display:grid;gap:14px;align-content:start}.spx-result{--pc:var(--spx-accent);padding:10px;border:1px solid var(--spx-border);border-left:4px solid var(--pc);border-radius:9px;background:var(--spx-bg)}.spx-result h3{font-size:.95rem}.spx-result p{margin:3px 0;color:var(--spx-muted);font-size:.83rem}.spx-fraction-bar{display:flex;height:24px;overflow:hidden;border:1px solid var(--spx-border);border-radius:7px;margin:7px 0}.spx-fraction-bar span{display:grid;place-items:center;min-width:0;color:#fff;font-size:.68rem;font-weight:850;text-shadow:0 1px 2px rgba(0,0,0,.45)}.spx-formula{padding:8px 10px;border-radius:8px;background:var(--spx-surface);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.76rem;overflow:auto}.spx-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.spx-metric{padding:9px;border:1px solid var(--spx-border);border-radius:9px;background:var(--spx-bg)}.spx-metric b{display:block;font-size:1.02rem}.spx-metric span{color:var(--spx-muted);font-size:.72rem}.spx-micro-wrap{display:grid;grid-template-columns:1fr;gap:8px}#spx-micro-canvas{width:100%;height:230px;border:1px solid var(--spx-border);border-radius:10px;background:var(--spx-bg)}.spx-legend{display:flex;flex-wrap:wrap;gap:8px;font-size:.75rem;color:var(--spx-muted)}.spx-legend span{display:flex;align-items:center;gap:5px}.spx-legend i{width:11px;height:11px;border-radius:3px;display:inline-block}.spx-preset-list{display:flex;flex-wrap:wrap;gap:7px}.spx-preset{padding:6px 9px}.spx-slider-row{display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:center}.spx-slider-row input[type=range]{width:100%}.spx-event-list{display:grid;gap:6px;margin-top:8px}.spx-event{padding:8px;border-left:3px solid var(--spx-accent);background:var(--spx-surface);font-size:.8rem}.spx-table-wrap{overflow:auto}.spx-table{width:100%;border-collapse:collapse;font-size:.79rem}.spx-table th,.spx-table td{padding:7px 8px;border-bottom:1px solid var(--spx-border);text-align:left;white-space:nowrap}.spx-table th{background:var(--spx-surface);font-size:.72rem;text-transform:uppercase;letter-spacing:.03em}.spx-chem-grid{display:grid;grid-template-columns:repeat(5,minmax(80px,1fr));gap:8px}.spx-note{padding:9px 10px;border-radius:8px;background:var(--spx-surface);color:var(--spx-muted);font-size:.8rem}.spx-status{display:inline-flex;align-items:center;padding:2px 7px;border-radius:999px;font-size:.7rem;font-weight:850}.spx-status.good{background:#ecfdf3;color:var(--spx-good)}.spx-status.warn{background:#fff7ed;color:var(--spx-warn)}.spx-quiz-options{display:grid;gap:7px}.spx-quiz-options button{text-align:left}.spx-answer{margin-top:9px;padding:9px;border-radius:8px;background:var(--spx-surface);font-size:.84rem}.spx-answer.correct{border-left:4px solid var(--spx-good)}.spx-answer.incorrect{border-left:4px solid var(--spx-danger)}.spx-export-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.spx-empty{padding:12px;text-align:center;color:var(--spx-muted);font-size:.84rem}.spx-hidden{display:none!important}
@media(max-width:940px){.spx-grid-2{grid-template-columns:1fr}.spx-side-stack{grid-template-columns:repeat(2,minmax(0,1fr))}.spx-side-stack>.spx-card:last-child:nth-child(odd){grid-column:1/-1}}@media(max-width:720px){.spx-fields{grid-template-columns:1fr 1fr}.spx-point-row{grid-template-columns:52px 1fr 1fr}.spx-point-row .spx-icon-btn{grid-column:2/4;justify-self:end}.spx-chem-grid{grid-template-columns:repeat(3,minmax(80px,1fr))}.spx-export-grid{grid-template-columns:1fr 1fr}}@media(max-width:520px){#spx-tool{padding:11px;font-size:15px}.spx-grid-2,.spx-side-stack{grid-template-columns:1fr}.spx-side-stack>.spx-card:last-child:nth-child(odd){grid-column:auto}.spx-fields,.spx-chem-grid,.spx-export-grid{grid-template-columns:1fr 1fr}.spx-point-row{grid-template-columns:1fr}.spx-point-row .spx-icon-btn{grid-column:auto;justify-self:stretch}.spx-card-title{flex-direction:column}.spx-toolbar{width:100%}.spx-toolbar .spx-btn{flex:1}.spx-region-label{font-size:12px}}
@media print{.spx-tabs,.spx-toolbar,.spx-btn,.spx-icon-btn,.spx-disclaimer{display:none!important}#spx-tool{max-width:none}.spx-panel[hidden]{display:none!important}.spx-card{box-shadow:none;break-inside:avoid}}