.ab-lab{--ab-bg:#f4f7f5;--ab-surface:#fff;--ab-ink:#183b40;--ab-muted:#617476;--ab-line:#dce7e3;--ab-accent:#167a6c;--ab-soft:#e7f3ed;--ab-stage:#edf5f1;--ab-proton:#c84c48;--ab-neutron:#6f688c;--ab-electron:#267da8;--ab-p-tint:#fff1ee;--ab-n-tint:#f3f0f8;--ab-e-tint:#edf5fc;background:var(--ab-bg);color:var(--ab-ink);padding:26px 24px 58px;font-family:Inter,system-ui,sans-serif;line-height:1.5}html[data-theme=dark] .ab-lab{--ab-bg:#111e24;--ab-surface:#1a2c32;--ab-ink:#e5f0ed;--ab-muted:#acc0be;--ab-line:#35484b;--ab-accent:#8bd6be;--ab-soft:#233f3b;--ab-stage:#1a3437;--ab-proton:#f69b93;--ab-neutron:#c1b3e1;--ab-electron:#8bccef;--ab-p-tint:#3d2e32;--ab-n-tint:#322f43;--ab-e-tint:#243a4b}.ab-lab *{box-sizing:border-box}.ab-lab [hidden]{display:none!important}.ab-lab button,.ab-lab input,.ab-lab select{font:inherit}.ab-lab button{cursor:pointer;transition:background .18s,border-color .18s,transform .18s}.ab-lab button:disabled{cursor:default;opacity:.4}.ab-lab a:focus-visible,.ab-lab button:focus-visible,.ab-lab input:focus-visible,.ab-lab select:focus-visible,.ab-lab summary:focus-visible,.ab-three-host:focus-visible{outline:#8b74b8 solid 3px;outline-offset:4px}.ab-lab h1,.ab-lab h2,.ab-lab h3,.ab-lab p{margin:0;color:inherit}.ab-shell{max-width:1240px;margin:0 auto}.ab-back{color:var(--ab-muted);text-decoration:none;font-size:12px;font-weight:550;display:inline-block;padding:3px 0}.ab-back:hover{color:var(--ab-accent)}.ab-heading{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:24px 0 30px}.ab-eyebrow{font-size:10px;letter-spacing:1.5px;font-weight:750;color:var(--ab-accent)!important;display:flex;align-items:center;gap:8px}.ab-lab-dot{width:7px;height:7px;border-radius:50%;background:var(--ab-accent)}.ab-heading h1{font-size:clamp(36px,4vw,50px);line-height:1.12;letter-spacing:-2px;font-weight:750;margin:10px 0 12px}.ab-title-dot{color:var(--ab-accent)}.ab-intro{font-size:14px;color:var(--ab-muted)!important}.ab-heading-note{font-size:12px;color:var(--ab-muted);line-height:1.8;padding-right:15px}.ab-heading-note>span{color:var(--ab-accent);font-size:42px;float:left;margin-right:15px;line-height:1.1;font-weight:300}.ab-toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:20px}.ab-course{display:flex;align-items:center;gap:13px;flex-wrap:wrap}.ab-label{font-size:10px;font-weight:700;letter-spacing:1.1px;color:var(--ab-muted)}.ab-course>.ab-label{font-size:12px;letter-spacing:0}.ab-segment{display:inline-flex;align-items:center;background:var(--ab-surface);border:1px solid var(--ab-line);border-radius:10px;padding:4px;gap:3px}.ab-segment button{border:0;border-radius:7px;background:0 0;color:var(--ab-muted);font-size:12px;font-weight:600;min-height:34px;padding:6px 13px;white-space:nowrap}.ab-segment button[aria-pressed=true]{background:var(--ab-soft);color:var(--ab-accent)}.ab-segment button:hover{background:var(--ab-soft)}.ab-mode{background:0 0}.ab-mode button[aria-pressed=true]{background:var(--ab-ink);color:var(--ab-bg)}.ab-mode button span{margin-left:8px}.ab-scope{font-size:11px;color:var(--ab-muted)}.ab-workspace{display:grid;grid-template-columns:minmax(0,1fr) 318px;gap:20px;align-items:start}.ab-build-card,.ab-model-card{border:1px solid var(--ab-line);border-radius:20px;background:var(--ab-surface);overflow:hidden;box-shadow:0 5px 18px #183b4003}.ab-stage-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 23px 0;background:var(--ab-stage)}.ab-view{background:var(--ab-surface);border-color:transparent}.ab-view button{font-size:11px;min-height:31px;padding:5px 11px}.ab-stage{height:428px;position:relative;background:radial-gradient(ellipse at 50% 47%,var(--ab-surface) 0,var(--ab-stage) 68%);isolation:isolate}.ab-stage:after{content:'';position:absolute;left:26%;right:26%;bottom:43px;height:22px;border-radius:50%;background:#24473e0c;filter:blur(12px);pointer-events:none;z-index:-1}.ab-diagram,.ab-three-host{position:absolute;inset:0;min-width:0;outline-offset:-5px!important}.ab-three-host canvas{display:block;width:100%;height:100%;cursor:grab}.ab-three-host canvas:active{cursor:grabbing}.ab-diagram{display:grid;place-items:center;margin:0!important;padding:34px 18px 38px;border:0!important;background:0 0!important;box-shadow:none!important;border-radius:0!important}.ab-diagram svg{display:block;width:100%;max-width:620px;height:100%;overflow:visible}.ab-element-tile{position:absolute;top:22px;left:24px;z-index:2;pointer-events:none}.ab-nuclide{display:flex;align-items:center;line-height:1;gap:5px;position:relative}.ab-nuclide-numbers{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:600;text-align:right}.ab-nuclide>strong{font-size:49px;font-weight:600;letter-spacing:-2px}.ab-nuclide>sup{font-size:16px;align-self:flex-start;padding-top:2px}.ab-element-tile>span{display:block;font-size:11px;color:var(--ab-muted);margin:9px 0 0 2px}.ab-charge-badge{position:absolute;right:24px;top:25px;font-size:10px;letter-spacing:.2px;font-weight:600;color:var(--ab-accent);padding:6px 10px;background:var(--ab-surface);border:1px solid var(--ab-line);border-radius:7px;z-index:2;pointer-events:none}.ab-stage-bottom{position:absolute;left:24px;right:24px;bottom:16px;display:flex;justify-content:space-between;gap:15px;color:var(--ab-muted);font-size:10px;pointer-events:none}.ab-stage-mark{font-size:9px;letter-spacing:1.2px}.ab-render-status{position:absolute;top:49%;left:10%;right:10%;text-align:center;font-size:13px;color:var(--ab-muted)!important;pointer-events:none}.ab-render-status.ab-fallback-notice{top:auto;bottom:43px;background:var(--ab-surface);padding:5px;border-radius:6px;font-size:11px}.ab-view-controls{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 22px;border-top:1px solid var(--ab-line);border-bottom:1px solid var(--ab-line);flex-wrap:wrap}.ab-legend{display:flex;gap:13px;font-size:10px;color:var(--ab-muted)}.ab-legend>span{display:flex;align-items:center;gap:5px}.ab-dot{width:7px;height:7px;border-radius:50%;display:inline-block}.ab-p{background:var(--ab-proton)}.ab-n{background:var(--ab-neutron)}.ab-e{background:var(--ab-electron)}.ab-camera-controls{display:flex;gap:3px;align-items:center}.ab-camera-controls button{min-width:30px;min-height:33px;background:0 0;border:1px solid transparent;color:var(--ab-muted);border-radius:6px;font-size:12px;padding:5px}.ab-camera-controls button:hover{background:var(--ab-soft);color:var(--ab-accent)}.ab-camera-controls button:nth-last-child(-n+2){font-size:10px;padding:5px 8px}.ab-camera-controls button:last-child{border-color:var(--ab-line);margin-left:4px;min-width:55px}.ab-stats{display:grid;grid-template-columns:1fr 1.2fr 1.2fr;padding:23px 24px;gap:22px}.ab-stats>div+div{border-left:1px solid var(--ab-line);padding-left:23px}.ab-stats span{display:block;font-size:11px;color:var(--ab-muted)}.ab-stats span b{font-weight:600;padding-left:2px}.ab-stats strong{display:block;font-size:29px;font-weight:550;line-height:1.4;letter-spacing:-1px}.ab-stats small{display:block;font-size:10px;color:var(--ab-muted);line-height:1.6}.ab-insight{display:flex;gap:14px;align-items:flex-start;padding:18px 23px 20px;background:var(--ab-soft);border-top:1px solid var(--ab-line);min-height:99px}.ab-insight-icon{display:grid;place-items:center;border:1px solid var(--ab-line);width:28px;height:28px;border-radius:8px;color:var(--ab-accent);flex:none;font-size:19px}.ab-insight strong{font-size:12px;color:var(--ab-accent);font-weight:650}.ab-insight p{font-size:11px;line-height:1.8;color:var(--ab-muted);margin-top:4px}.ab-build-card{padding:24px}.ab-panel-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.ab-panel-heading h2{font-size:21px;letter-spacing:-.6px;font-weight:650;margin-top:7px}.ab-panel-heading .ab-eyebrow{font-size:9px}.ab-build-mark{height:33px;width:33px;display:grid;place-items:center;border-radius:10px;font-size:24px;line-height:1;color:var(--ab-accent);background:var(--ab-soft)}.ab-input-label{display:block;font-size:11px;color:var(--ab-muted);font-weight:550;margin-bottom:7px}.ab-build-card select{width:100%;height:43px;background:var(--ab-bg);border:1px solid var(--ab-line);color:var(--ab-ink);border-radius:9px;font-size:12px;padding:0 10px;cursor:pointer}.ab-preset-note{font-size:9px;color:var(--ab-muted)!important;margin:6px 0 20px!important;line-height:1.6}.ab-particle{margin-bottom:14px;border:1px solid var(--ab-line);border-radius:12px;padding:13px;background:var(--ab-p-tint)}.ab-particle-n{background:var(--ab-n-tint)}.ab-particle-e{background:var(--ab-e-tint)}.ab-particle-heading{display:flex;align-items:center;gap:10px;margin-bottom:11px}.ab-particle-icon{width:32px;height:32px;display:grid;place-content:center;grid-auto-flow:column;align-items:start;border-radius:50%;background:var(--ab-surface);color:var(--ab-proton);font-size:17px;font-weight:650;box-shadow:0 2px 4px #183b4008}.ab-particle-icon sup{font-size:9px;top:0;position:relative}.ab-particle-n .ab-particle-icon{color:var(--ab-neutron)}.ab-particle-e .ab-particle-icon{color:var(--ab-electron)}.ab-particle label{font-size:12px;font-weight:650;display:block;cursor:pointer}.ab-particle-heading p{font-size:10px;color:var(--ab-muted);margin-top:2px}.ab-stepper{display:grid;grid-template-columns:37px 1fr 37px;gap:6px}.ab-stepper button{border:1px solid var(--ab-line);border-radius:7px;background:var(--ab-surface);color:var(--ab-ink);min-height:35px;font-size:20px;line-height:1}.ab-stepper button:hover:enabled{border-color:var(--ab-accent);background:var(--ab-soft)}.ab-stepper input{width:100%;min-width:0;border:1px solid transparent;background:0 0;color:var(--ab-ink);text-align:center;font-size:21px;font-weight:600;appearance:textfield;border-radius:5px;padding:0}.ab-stepper input::-webkit-inner-spin-button,.ab-stepper input::-webkit-outer-spin-button{appearance:none;margin:0}.ab-stepper input:focus{background:var(--ab-surface)}.ab-build-actions{display:flex;align-items:center;gap:5px;margin:16px 0 23px}.ab-button{border:1px solid transparent;padding:10px 13px;border-radius:8px;font-size:11px!important;font-weight:600!important;min-height:39px;white-space:nowrap}.ab-button-soft{background:var(--ab-soft);color:var(--ab-accent)}.ab-button-plain{background:0 0;color:var(--ab-muted)}.ab-button-primary{background:var(--ab-accent);color:var(--ab-surface)}html[data-theme=dark] .ab-button-primary{color:var(--ab-bg)}.ab-button:hover{filter:brightness(.96)}.ab-button-plain:hover{background:var(--ab-soft)}.ab-configuration{border-top:1px solid var(--ab-line);padding-top:21px}.ab-config-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:11px}.ab-config-heading h3{font-size:12px;font-weight:600}.ab-config-heading>span{font-size:10px;color:var(--ab-muted)}.ab-shell-chips{display:flex;gap:6px;flex-wrap:wrap}.ab-shell-chips button{background:var(--ab-bg);border:1px solid var(--ab-line);border-radius:7px;min-width:56px;min-height:42px;padding:5px 9px;color:var(--ab-ink);font-size:17px;font-weight:600}.ab-shell-chips button small{display:block;font-size:8px;font-weight:500;color:var(--ab-muted);margin-bottom:2px}.ab-orbital-boxes button:hover,.ab-shell-chips button:hover{border-color:var(--ab-accent);background:var(--ab-soft)}#ab-config-note{font-size:10px;line-height:1.75;color:var(--ab-muted);margin-top:10px}#ab-subshell-string{font-size:12px;line-height:1.8;color:var(--ab-accent);margin:14px 0 10px}.ab-orbital-boxes{display:flex;flex-wrap:wrap;gap:5px}.ab-orbital-boxes button{border:1px solid var(--ab-line);border-radius:6px;padding:6px;background:var(--ab-bg);color:var(--ab-ink);font-size:10px}.ab-orbital-boxes button[aria-pressed=true]{border-color:var(--ab-accent);background:var(--ab-soft)}.ab-orbital-boxes button>span{display:block;white-space:nowrap;letter-spacing:1px;font-size:12px;margin-top:3px}.ab-orbital-boxes button>span i{font-style:normal;border:1px solid var(--ab-line);padding:0 2px;display:inline-block;min-width:19px;min-height:21px;background:var(--ab-surface)}.ab-hund-note{font-size:9px!important;color:var(--ab-muted)!important;line-height:1.7!important;margin-top:9px!important}.ab-experiments{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:16px;margin-top:23px;align-items:center}.ab-experiments>.ab-eyebrow{font-size:9px}.ab-experiments h2{font-size:20px;font-weight:550;letter-spacing:-.6px;margin-top:7px}.ab-experiments .ab-eyebrow{font-size:8px;letter-spacing:1.15px}.ab-experiments button{display:flex;gap:11px;align-items:center;background:var(--ab-surface);border:1px solid var(--ab-line);border-radius:12px;padding:17px 13px;text-align:left;color:var(--ab-ink);min-height:79px;font-size:11px;font-weight:600}.ab-experiments button:hover{transform:translateY(-2px);border-color:var(--ab-accent)}.ab-experiment-number{font-size:10px;font-weight:550;align-self:start;color:var(--ab-accent);padding-top:1px}.ab-experiments small{display:block;color:var(--ab-muted);font-size:9px;font-weight:400;margin-top:5px}.ab-experiments button>span:last-child{margin-left:auto;color:var(--ab-accent);font-size:17px}.ab-challenge{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:22px;padding:24px 28px;border:1px solid var(--ab-line);background:var(--ab-surface);border-radius:15px;border-left:4px solid var(--ab-accent)}.ab-challenge-copy h2{font-size:22px;letter-spacing:-.6px;line-height:1.4;font-weight:600;margin:7px 0}.ab-challenge-copy>p:last-child{font-size:12px;color:var(--ab-muted)}.ab-challenge-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}#ab-challenge-feedback:empty{display:none}#ab-challenge-feedback{width:100%;font-size:12px;color:var(--ab-accent);border-top:1px solid var(--ab-line);padding-top:15px;line-height:1.8}.ab-challenge.is-complete{background:var(--ab-soft)}#ab-challenge-progress{letter-spacing:0;color:var(--ab-muted);margin-left:10px}.ab-model-notes{margin-top:24px;border-top:1px solid var(--ab-line);font-size:11px;color:var(--ab-muted)}.ab-model-notes summary{display:flex;justify-content:space-between;align-items:center;cursor:pointer;padding:17px 0;font-weight:550;list-style:none}.ab-model-notes summary::-webkit-details-marker{display:none}.ab-model-notes summary span{font-size:18px}.ab-model-notes[open] summary span{transform:rotate(45deg)}.ab-model-notes>div{max-width:900px;line-height:1.9;padding:0 0 10px}.ab-model-notes p{margin-bottom:9px}.ab-model-notes a{color:var(--ab-accent);text-underline-offset:3px}.ab-noscript{padding:20px;background:var(--ab-soft);border-radius:10px}@media(min-width:1450px){.ab-stage{height:454px}}@media(max-width:1100px){.ab-workspace{grid-template-columns:minmax(0,1fr) 295px;gap:15px}.ab-build-card{padding:20px}.ab-heading-note{display:none}.ab-view-controls{padding:10px 15px}.ab-stage{height:415px}.ab-stats{padding:21px 18px;gap:15px}.ab-stats>div+div{padding-left:15px}.ab-camera-controls{margin-left:auto}.ab-experiments{grid-template-columns:repeat(3,1fr)}.ab-experiments>div{grid-column:1/-1;display:flex;align-items:center;gap:20px}.ab-experiments h2{margin:0}.ab-scope{display:none}}@media(max-width:800px){.ab-lab{padding:20px 18px 35px}.ab-toolbar{align-items:stretch;gap:12px;flex-wrap:wrap}.ab-workspace{grid-template-columns:minmax(0,1fr)}.ab-stage{height:440px}.ab-build-card{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px 14px}.ab-panel-heading{grid-column:1/-1;margin-bottom:0}.ab-input-label{grid-column:1/-1;margin:0}.ab-build-card select{grid-column:1/-1}.ab-preset-note{grid-column:1/-1;margin:-6px 0 3px!important}.ab-particle{padding:11px;margin:0}.ab-particle-heading{gap:7px}.ab-particle-icon{width:27px;height:27px}.ab-particle-heading p{font-size:9px}.ab-stepper{grid-template-columns:30px minmax(0,1fr) 30px;gap:2px}.ab-stepper button{min-height:37px}.ab-build-actions{grid-column:1/-1;margin:2px 0}.ab-configuration{grid-column:1/-1;margin-top:3px}.ab-challenge{padding:20px}.ab-insight{min-height:88px}}@media(max-width:520px){.ab-lab{padding:17px 13px 28px}.ab-heading{padding:21px 0 22px}.ab-heading h1{font-size:38px;letter-spacing:-1.5px}.ab-intro{font-size:12px;max-width:290px;line-height:1.8}.ab-heading .ab-eyebrow{font-size:9px}.ab-toolbar{gap:11px;margin-bottom:15px}.ab-course{width:100%;justify-content:space-between;gap:9px}.ab-course>.ab-label{font-size:11px}.ab-mode{width:100%}.ab-mode button{flex:1;min-height:36px;font-size:11px}.ab-stage-head{padding:13px 14px 0;gap:5px}.ab-stage-head>.ab-label{font-size:8px;letter-spacing:.8px}.ab-view button{font-size:10px;padding:5px 8px;min-height:33px}.ab-stage{height:340px}.ab-element-tile{left:16px;top:16px}.ab-nuclide>strong{font-size:38px}.ab-nuclide-numbers{font-size:10px;gap:5px}.ab-element-tile>span{font-size:9px;margin-top:7px}.ab-charge-badge{right:16px;top:17px;font-size:9px;padding:5px 8px}.ab-stage-bottom{left:15px;right:15px;font-size:9px;bottom:13px}.ab-stage-mark{display:none}.ab-view-controls{justify-content:center;gap:9px;padding:10px 12px}.ab-camera-controls{margin:0;justify-content:center;width:100%;border-top:1px solid var(--ab-line);padding-top:5px}.ab-camera-controls button{min-height:36px;min-width:34px}.ab-camera-controls button:nth-last-child(-n+2){padding:5px 11px;font-size:11px}.ab-legend{gap:20px}.ab-stats{padding:17px 13px;gap:9px;grid-template-columns:1fr 1.18fr 1.15fr}.ab-stats>div+div{padding-left:10px}.ab-stats span{font-size:9px}.ab-stats strong{font-size:27px}.ab-stats small{font-size:9px}.ab-insight{padding:15px;gap:10px}.ab-insight p{font-size:11px;line-height:1.75}.ab-build-card{padding:19px;grid-template-columns:1fr;gap:12px}.ab-panel-heading{margin-bottom:3px}.ab-particle{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px}.ab-particle-heading{margin:0;gap:10px}.ab-particle-icon{width:30px;height:30px}.ab-particle-heading p{font-size:10px}.ab-stepper{grid-template-columns:34px 37px 34px;gap:2px}.ab-stepper input{font-size:20px}.ab-experiments{grid-template-columns:1fr;gap:9px;margin-top:23px}.ab-experiments>div{display:block;padding:2px 0 6px}.ab-experiments h2{margin-top:6px}.ab-experiments button{min-height:69px;padding:14px 16px;font-size:12px}.ab-experiments small{font-size:10px}.ab-experiments .ab-eyebrow{font-size:9px}.ab-experiment-number{margin-right:4px}.ab-challenge-actions{width:100%;justify-content:space-between}.ab-challenge-copy h2{font-size:21px}.ab-challenge{gap:16px}.ab-build-card,.ab-model-card{border-radius:16px}}@media(prefers-reduced-motion:reduce){.ab-lab *{animation:none!important;transition:none!important;scroll-behavior:auto!important}}.ab-model-caption{padding:9px 23px 0!important;font-size:10px!important;color:var(--ab-muted)!important;line-height:1.7!important}@media(max-width:520px){.ab-stage{height:300px}.ab-mobile-particles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;padding:14px 11px 4px}.ab-mobile-particles .ab-particle{display:block;padding:9px 6px;border-radius:9px}.ab-mobile-particles .ab-particle-heading{justify-content:center;gap:5px;margin-bottom:8px}.ab-mobile-particles .ab-particle-icon{width:21px;height:21px;font-size:12px;box-shadow:none}.ab-mobile-particles .ab-particle-icon sup{font-size:7px}.ab-mobile-particles .ab-particle label{font-size:9px}.ab-mobile-particles .ab-particle-heading p{display:none}.ab-mobile-particles .ab-stepper{grid-template-columns:29px minmax(0,1fr) 29px;gap:0}.ab-mobile-particles .ab-stepper button{font-size:18px;min-height:35px}.ab-mobile-particles .ab-stepper input{font-size:18px}.ab-model-caption{padding:9px 14px 0!important;font-size:9px!important}.ab-stats{padding-top:14px}}@media(max-width:360px){.ab-mobile-particles{gap:5px;padding-left:8px;padding-right:8px}.ab-mobile-particles .ab-stepper{grid-template-columns:25px minmax(0,1fr) 25px}.ab-mobile-particles .ab-particle-heading{gap:3px}.ab-mobile-particles .ab-particle-icon{width:17px;height:17px}.ab-mobile-particles .ab-stepper input{font-size:16px}}@media(max-width:1024px){.atom-builder-page .navbar__links:not(.open) *{visibility:hidden}}body.atom-builder-page{overflow-x:clip}
/*# sourceMappingURL=tools/atom-builder.min.css.map */