.at-ptkl{--at-ptkl-solute:#f59e0b;--at-ptkl-solvent:#bae6fd;--at-ptkl-ink:#0F4679}.at-ptkl .at-frac__tabs{display:flex;flex-wrap:wrap;gap:.5rem;margin:.2rem 0 1rem}.at-ptkl__tabstate{display:none!important}.at-ptkl__modes{margin:0 0 0.95rem!important;padding:.75rem .95rem 0.85rem!important;border:0!important;border-left:4px solid var(--at-pt2-blue)!important;border-radius:10px;background:var(--at-pt2-soft)}.at-ptkl__modes legend{float:left;width:100%;margin:0 0 .45rem;padding:0}.at-ptkl__mode{display:flex;align-items:flex-start;gap:.55rem;clear:both;cursor:pointer;color:#111;font-weight:600;line-height:1.45}.at-ptkl__mode+.at-ptkl__mode{margin-top:.45rem}.at-ptkl__mode input[type="radio"]{flex:0 0 auto;width:1.05rem;height:1.05rem;margin:.15rem 0 0;accent-color:var(--at-ptkl-ink)}.at-ptkl .at-ptkl__fields{grid-template-columns:repeat(2,minmax(0,1fr))}.at-ptkl__input{position:relative;display:block}.at-ptkl .at-ptkl__input input[type="text"]{width:100%;padding-right:2.6rem}.at-ptkl__suffix{position:absolute;top:50%;right:.9rem;transform:translateY(-50%);color:#5b6b76;font-size:.9rem;font-weight:700;pointer-events:none}.at-ptkl .at-ptkl__note{margin:.8rem 0 0!important;padding:.6rem .85rem;border-radius:10px;background:#fffbeb;color:#78350f;line-height:1.55}.at-ptkl__rows{display:flex;flex-direction:column;gap:.7rem}.at-ptkl__row{display:grid;grid-template-columns:2rem minmax(0,1fr) minmax(0,1fr) 2.4rem;align-items:end;gap:.7rem}.at-ptkl__row-no{display:inline-flex;align-items:center;justify-content:center;width:2rem;height:2rem;margin-bottom:.45rem;border-radius:50%;background:var(--at-ptkl-ink);color:#fff;font-size:.9rem;font-weight:800}body .entry-content .at-ptkl button.at-ptkl__remove,body.atn-unified .entry-content .at-ptkl button.at-ptkl__remove,.at-ptkl button.at-ptkl__remove{appearance:none;cursor:pointer;width:2.4rem;height:2.4rem;margin:0 0 0.25rem!important;padding:0!important;border:1px solid #f3c4c4!important;border-radius:10px!important;background:#fff!important;color:#b91c1c!important;box-shadow:none!important;font-size:1rem!important;font-weight:700!important;line-height:1!important}body .entry-content .at-ptkl button.at-ptkl__remove:hover:not(:disabled),body.atn-unified .entry-content .at-ptkl button.at-ptkl__remove:hover:not(:disabled),.at-ptkl button.at-ptkl__remove:hover:not(:disabled){border-color:#f87171!important;background:#fee2e2!important}.at-ptkl button.at-ptkl__remove:disabled{cursor:not-allowed;opacity:.35}.at-ptkl .at-ptkl__add{margin-top:.8rem}.at-ptkl .at-ptkl__add:disabled{cursor:not-allowed;opacity:.5}.at-ptkl__summary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.85rem}.at-ptkl__card{display:flex;flex-direction:column;align-items:center;gap:.15rem;padding:.95rem .75rem;border-radius:14px;text-align:center}.at-ptkl__card.is-key{background:var(--at-ptkl-ink);color:#fff}.at-ptkl__card.is-soft{border:1px solid #bae6fd;background:#f0f9ff;color:var(--at-ptkl-ink)}.at-ptkl__card-icon{font-size:1.5rem;line-height:1.2}.at-ptkl__card-label{font-size:.9rem;font-weight:600;opacity:.92}.at-ptkl__card-value{font-size:clamp(1.45rem, 5vw, 2rem);font-weight:800;line-height:1.15;font-variant-numeric:tabular-nums;word-break:break-word}.at-ptkl__card-note{font-size:.88rem;font-weight:700}.at-pt2__result h3.at-ptkl__section-title,.at-ptkl h3.at-ptkl__section-title{margin:1.15rem 0 0.4rem!important;padding:0!important;color:var(--at-ptkl-ink)!important;font-size:16px!important;font-weight:700!important;line-height:1.4!important}.at-ptkl .at-ptkl__trap{margin:.5rem 0 0!important;padding:.55rem .8rem;border-left:4px solid #f59e0b;border-radius:8px;background:#fffbeb}.at-ptkl__visual{margin-top:.4rem}.at-ptkl__svg{display:block;width:100%;height:auto;overflow:visible;font-family:inherit}.at-ptkl__beaker{max-width:520px}.at-ptkl__stack{max-width:680px}.at-ptkl__liquid{fill:var(--at-ptkl-solvent)}.at-ptkl__tint{fill:var(--at-ptkl-solute)}.at-ptkl__dot{fill:#c2410c;fill-opacity:.8}.at-ptkl__dots{animation:at-ptkl-fade 0.6s ease-out}.at-ptkl__ticks{fill:none;stroke:#64748b;stroke-width:1.5}.at-ptkl__glass{fill:none;stroke:#334155;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.at-ptkl__gauge-solvent{fill:var(--at-ptkl-solvent)}.at-ptkl__gauge-solute{fill:var(--at-ptkl-solute)}.at-ptkl__gauge-frame{fill:none;stroke:#334155;stroke-width:2}.at-ptkl__svg-big{fill:var(--at-ptkl-ink);font-size:20px;font-weight:800}.at-ptkl__svg-label{font-size:14px;font-weight:800}.at-ptkl__svg-label.is-solute{fill:#b45309}.at-ptkl__svg-label.is-solvent{fill:#0369a1}.at-ptkl__svg-text{fill:#475569;font-size:13px;font-weight:600}.at-ptkl__track{fill:#e8eef3}.at-ptkl__bars{transform-origin:20px 41px;animation:at-ptkl-grow 0.6s ease-out}.at-ptkl__seg{stroke:#fff;stroke-width:1}.at-ptkl__seg-text{fill:#fff;font-size:14px;font-weight:700;paint-order:stroke;stroke:rgb(15 23 42 / .35);stroke-width:2px}.at-ptkl__scale{fill:none;stroke:#94a3b8;stroke-width:2}@keyframes at-ptkl-grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}@keyframes at-ptkl-fade{from{opacity:0}to{opacity:1}}.at-ptkl__legend{display:flex;flex-wrap:wrap;gap:.3rem 1.2rem;margin:.4rem 0 0!important;padding:0!important;list-style:none!important;font-size:.92rem;font-weight:600}.at-ptkl__legend li{display:flex;align-items:center;gap:.45rem;margin:0!important}.at-ptkl__swatch{display:inline-block;flex:0 0 auto;width:.9rem;height:.9rem;margin-right:.4rem;border-radius:4px;vertical-align:-.1em}.at-ptkl__legend .at-ptkl__swatch{margin-right:0}.at-ptkl__swatch.is-solute{background:var(--at-ptkl-solute)}.at-ptkl__swatch.is-solvent{background:var(--at-ptkl-solvent);box-shadow:inset 0 0 0 1px #7dd3fc}.at-ptkl .at-ptkl__note-small{margin:.3rem 0 0!important;color:#5b6b76;font-size:.88rem}.at-ptkl__table{width:100%;margin-top:.6rem}.at-ptkl__table tr.is-key td{background:#f0f9ff;color:var(--at-ptkl-ink);font-weight:700}.at-ptkl__quiz{margin-top:1.1rem}.at-ptkl h3.at-ptkl__quiz-title{margin:0 0 0.6rem!important;padding:0!important;color:#0f172a!important;font-size:17px!important;font-weight:700!important;line-height:1.4!important}.at-ptkl__q+.at-ptkl__q{margin-top:1rem;padding-top:.95rem;border-top:1px dashed #cfe6f5}.at-ptkl .at-ptkl__q-text{margin:0 0 0.6rem!important;line-height:1.6}.at-ptkl__opts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.55rem}body .entry-content .at-ptkl button.at-ptkl__opt,body.atn-unified .entry-content .at-ptkl button.at-ptkl__opt,.at-ptkl button.at-ptkl__opt{appearance:none;cursor:pointer;width:100%;margin:0!important;padding:.7rem 0.9rem!important;border:1px solid #d5dee5!important;border-radius:12px!important;background:#fff!important;color:#111!important;box-shadow:none!important;font-family:inherit;font-size:0.95rem!important;font-weight:600!important;line-height:1.4!important;text-align:left;transition:background 0.15s ease,border-color 0.15s ease}body .entry-content .at-ptkl button.at-ptkl__opt:hover:not(:disabled),body.atn-unified .entry-content .at-ptkl button.at-ptkl__opt:hover:not(:disabled),.at-ptkl button.at-ptkl__opt:hover:not(:disabled){border-color:#00A9E2!important;background:#f3fbfe!important}.at-ptkl button.at-ptkl__opt:disabled{cursor:default;opacity:.75}body .entry-content .at-ptkl button.at-ptkl__opt.is-correct,body.atn-unified .entry-content .at-ptkl button.at-ptkl__opt.is-correct,.at-ptkl button.at-ptkl__opt.is-correct{border-color:#22c55e!important;background:#dcfce7!important;color:#14532d!important;opacity:1}body .entry-content .at-ptkl button.at-ptkl__opt.is-wrong,body.atn-unified .entry-content .at-ptkl button.at-ptkl__opt.is-wrong,.at-ptkl button.at-ptkl__opt.is-wrong{border-color:#f87171!important;background:#fee2e2!important;color:#7f1d1d!important;opacity:1}.at-ptkl .at-ptkl__feedback{margin:.65rem 0 0!important;font-weight:700}.at-ptkl__feedback.is-correct{color:#15803d}.at-ptkl__feedback.is-wrong{color:#b91c1c}.at-ptkl__explain{margin-top:.5rem;padding:.75rem .9rem;border-left:4px solid #f59e0b;border-radius:10px;background:#fffbeb;line-height:1.7}.at-ptkl .at-ptkl__explain p{margin:.3rem 0 0!important}.at-ptkl__retry{margin-top:1rem}@media (max-width:720px){.at-ptkl .at-ptkl__fields,.at-ptkl__summary,.at-ptkl__opts{grid-template-columns:1fr}.at-ptkl__row{grid-template-columns:2rem minmax(0,1fr) 2.4rem;row-gap:.45rem}.at-ptkl__row>.at-pt2__field:nth-of-type(2){grid-column:2 / 3}.at-ptkl__row .at-ptkl__remove{grid-row:1;grid-column:3}}@media (prefers-reduced-motion:reduce){.at-ptkl__bars,.at-ptkl__dots{animation:none}}@media print{.at-ptkl__card.is-key{border:1px solid #0F4679;background:#fff!important;color:#0F4679!important}.at-ptkl__svg,.at-ptkl__swatch{-webkit-print-color-adjust:exact;print-color-adjust:exact}.at-ptkl__bars,.at-ptkl__dots{animation:none}}