.laboratory-page{--lab-inverse-muted:color-mix(in srgb, var(--bone) 75%, var(--ink));--lab-inverse-rule:color-mix(in srgb, var(--gold) 30%, transparent)}.tool-intro{padding:42px 0 46px}.tool-intro .product-back{margin-bottom:36px}.tool-intro-grid{grid-template-columns:1.65fr 1fr;align-items:end;gap:70px;display:grid}.tool-intro h1{letter-spacing:-.045em;margin-top:18px;font-size:clamp(42px,5.6vw,85px);line-height:.98}.tool-intro-note{max-width:390px;color:var(--text-muted);font-size:15px}.tool-intro-note>svg{color:var(--bronze);margin-bottom:12px}.tool-intro-note .hw-text-link{margin-top:16px;font-size:13px}.calculator-workspace{border:1px solid var(--rule);scroll-margin-top:30px}.lab-mode-switch{border-bottom:1px solid var(--rule);background:var(--warm-surface);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.lab-mode-switch button{text-align:left;border:0;border-right:1px solid var(--rule);color:var(--text-muted);background:0 0;border-top:3px solid #0000;justify-content:space-between;align-items:center;gap:16px;padding:22px 24px;font-size:13px;display:flex}.lab-mode-switch button:last-child{border-right:0}.lab-mode-switch button>span{font-family:var(--font-geist-mono), monospace;color:var(--text-muted);font-size:11px}.lab-mode-switch button>svg{opacity:.4;margin-left:auto}.lab-mode-switch button[aria-pressed=true]{border-top-color:var(--bronze);background:var(--paper);color:var(--ink)}.lab-mode-switch button[aria-pressed=true]>svg{opacity:1}.lab-workbench{grid-template-columns:1.13fr 1fr;display:grid}.lab-form{background:var(--paper);min-width:0;padding:38px}.lab-form-heading{justify-content:space-between;align-items:start;gap:16px;display:flex}.lab-form h2{letter-spacing:-.025em;margin-top:8px;font-size:33px;line-height:1.1}.lab-example{white-space:nowrap;border:0;border-bottom:1px solid var(--bronze);color:var(--text-muted);background:0 0;align-items:center;gap:8px;padding:5px 0;font-size:11px;display:flex}.lab-form-description{color:var(--text-muted);max-width:390px;margin:15px 0 25px;font-size:13px}.lab-fields{gap:20px;display:grid}.lab-field label,.lab-basis label{color:var(--ink);margin-bottom:7px;font-size:13px;display:block}.lab-input-pair{background:var(--paper);border:1px solid var(--input);display:flex}.lab-input-pair input{width:100%;min-width:0;font-family:var(--font-geist-mono), monospace;color:var(--ink);background:0 0;border:0;border-radius:0;flex:1;padding:13px 15px;font-size:18px}.lab-input-pair input::placeholder{font-family:var(--font-geist-sans), sans-serif;color:var(--text-muted);font-size:14px}.lab-input-pair select,.lab-fixed-unit{border:0;border-left:1px solid var(--border);background:var(--warm-surface);min-width:94px;color:var(--text-muted);border-radius:0;padding:12px;font-size:13px}.lab-fixed-unit{text-align:center;place-content:center;display:grid}.lab-field-hint{color:var(--text-muted);max-width:440px;margin-top:7px;font-size:11px;line-height:1.6}.lab-input-pair:focus-within{outline:2px solid var(--bronze);outline-offset:2px}.lab-input-pair input:focus,.lab-input-pair select:focus{outline:none}.lab-output-unit,.lab-solve{align-items:center;gap:14px;margin:23px 0;font-size:12px;display:flex}.lab-output-unit select,.lab-solve select{-webkit-appearance:none;appearance:none;background:var(--paper) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='m3 4.5 3 3 3-3' stroke='%23695c49' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 12px center;border:1px solid var(--input);color:var(--ink);min-width:84px;min-height:44px;font:inherit;border-radius:0;padding:8px 34px 8px 12px}.lab-basis{border-top:1px solid var(--rule);padding:16px 0;font-size:12px}.lab-basis summary{cursor:pointer}.lab-basis summary span{color:var(--text-muted);margin-left:7px;font-size:11px}.lab-basis label{margin-top:15px}.lab-basis input{border:1px solid var(--input);background:var(--paper);width:100%;padding:10px;font-size:13px}.lab-basis p{color:var(--text-muted);margin-top:6px;font-size:11px}.lab-form-actions{flex-wrap:wrap;align-items:center;gap:16px 24px;margin-top:10px;display:flex}.lab-form-actions .hw-button{border:0;min-height:49px;padding:13px 25px;font-size:13px}.lab-reset{color:var(--text-muted);background:0 0;border:0;align-items:center;gap:7px;padding:8px 0;font-size:11px;display:inline-flex}.lab-example-notice{color:var(--text-muted);border-left:2px solid var(--bronze);background:var(--warm-surface);margin-bottom:20px;padding:9px 12px;font-size:11px}.lab-field-error,.lab-calculation-error{color:var(--destructive);margin-top:7px;font-size:12px}.lab-calculation-error{background:color-mix(in srgb, var(--destructive) 8%, var(--paper));border-left:2px solid var(--destructive);margin-bottom:16px;padding:12px}.lab-input-pair.has-error{border-color:var(--destructive)}.lab-result{background:var(--ink);min-width:0;color:var(--bone);flex-direction:column;padding:34px;scroll-margin-top:24px;display:flex}.lab-result:focus-visible{outline:2px solid var(--bronze);outline-offset:3px}.lab-result>.hw-eyebrow{color:var(--gold);letter-spacing:.1em;border-bottom:1px solid var(--lab-inverse-rule);padding-bottom:25px;font-size:10px}.lab-result>[role=status]{flex:1}.lab-result>[role=status]:empty{display:none}.lab-result:not(.lab-result--ready){background:var(--molecule-surface);color:var(--ink)}.lab-result:not(.lab-result--ready)>.hw-eyebrow,.lab-result:not(.lab-result--ready) .lab-result-footer{color:var(--text-muted);border-color:var(--rule)}.lab-result-empty{flex:1;padding:0 0 10px}.lab-reference-molecule{margin:0 0 25px}.lab-molecule-art{height:clamp(220px,23vw,290px)}.lab-molecule-art .molecular-structure-toggle{bottom:8px;right:0}.lab-reference-molecule figcaption{border-top:1px solid var(--rule);flex-wrap:wrap;align-items:baseline;gap:8px 16px;padding-top:16px;display:flex}.lab-reference-molecule figcaption strong{font-family:var(--font-cormorant), Georgia, serif;font-size:29px;font-weight:500;line-height:1}.lab-reference-molecule figcaption span{color:var(--text-muted);font-size:11px}.lab-result-empty .lab-molecule-note{margin-top:9px;font-size:10px;line-height:1.7}.lab-molecule-note a{text-underline-offset:3px;text-decoration:underline}.lab-result-empty h3{letter-spacing:-.015em;font-size:clamp(29px,2.6vw,40px);line-height:1.12}.lab-result-empty em{color:var(--bronze);font-style:normal}.lab-result-empty p{color:var(--text-muted);margin-top:20px;font-size:12px;line-height:1.8}.lab-result--ready h3{font-family:var(--font-geist-sans), sans-serif;color:var(--lab-inverse-muted);margin-top:26px;font-size:12px;font-weight:400}.lab-result-example{border:1px solid var(--lab-inverse-rule);color:var(--gold);margin-top:22px;padding:4px 7px;font-size:10px;display:inline-block}.lab-result-value{font-family:var(--font-cormorant), Georgia, serif;color:var(--gold);overflow-wrap:anywhere;margin:13px 0 26px;font-size:clamp(48px,5vw,78px);line-height:1.08}.lab-result-value>span{font-family:var(--font-geist-sans), sans-serif;color:var(--lab-inverse-muted);white-space:nowrap;font-size:.35em}.lab-secondary{border-top:1px solid var(--lab-inverse-rule);border-bottom:1px solid var(--lab-inverse-rule);color:var(--lab-inverse-muted);flex-wrap:wrap;justify-content:space-between;gap:10px 20px;margin-bottom:20px;padding:14px 0;font-size:12px;display:flex}.lab-secondary strong{color:var(--gold);font-weight:500}.lab-equation{background:color-mix(in srgb, var(--ink) 90%, var(--bone));border:1px solid var(--lab-inverse-rule);padding:16px;font-size:12px}.lab-equation p{color:var(--gold)}.lab-equation code{font-family:var(--font-geist-mono), monospace;color:var(--lab-inverse-muted);overflow-wrap:anywhere;margin-top:12px;font-size:10px;line-height:1.9;display:block}.lab-result-note{color:var(--lab-inverse-muted);margin:20px 0;font-size:11px;line-height:1.9}.lab-record-inputs{color:var(--lab-inverse-muted);border-top:1px solid var(--lab-inverse-rule);padding-top:14px;font-size:11px}.lab-record-inputs>p{color:var(--bone)}.lab-record-inputs ul{overflow-wrap:anywhere;margin:10px 0;padding-left:17px;line-height:1.8}.lab-rounding{color:var(--lab-inverse-muted);margin-top:16px;font-size:10px}.lab-result-actions{flex-wrap:wrap;gap:15px 22px;margin-top:25px;display:flex}.lab-result-actions button{border:0;border-bottom:1px solid var(--lab-inverse-rule);color:var(--gold);background:0 0;align-items:center;gap:7px;padding:8px 0;font-size:11px;display:inline-flex}.lab-result-actions p{width:100%;color:var(--gold);font-size:11px}.lab-result-footer{letter-spacing:.03em;color:var(--lab-inverse-muted);border-top:1px solid var(--lab-inverse-rule);margin-top:25px;padding-top:18px;font-size:9px}.tool-methods{padding:85px 0 65px;scroll-margin-top:40px}.tool-section-heading{justify-content:space-between;align-items:end;gap:40px;margin-bottom:38px;display:flex}.tool-section-heading h2{margin-top:16px;font-size:clamp(42px,4.6vw,64px);line-height:1}.tool-section-heading>p{max-width:380px;color:var(--text-muted);font-size:13px}.tool-examples{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.tool-examples article{border-right:1px solid var(--rule);padding:28px 25px}.tool-examples article:first-child{padding-left:0}.tool-examples article:last-child{border-right:0;padding-right:0}.tool-examples .hw-eyebrow{font-size:10px}.tool-examples h3{margin-top:18px;font-size:27px;line-height:1.1}.tool-examples p{color:var(--text-muted);font-size:12px;line-height:1.9}.tool-examples .tool-example-equation{font-family:var(--font-geist-mono), monospace;color:var(--ink);margin:16px 0;font-size:13px}.tool-method-detail{grid-template-columns:1fr 1fr;gap:70px;padding-top:45px;display:grid}.tool-method-detail h3{margin-bottom:17px;font-size:29px;line-height:1.1}.tool-method-detail p{color:var(--text-muted);font-size:12px;line-height:1.9}.tool-equations{margin:24px 0;padding:0;font-size:12px}.tool-equations>div{border-top:1px solid var(--rule);padding:12px 0}.tool-equations dt{font-weight:500}.tool-equations dd{font-family:var(--font-geist-mono), monospace;color:var(--text-muted);margin:7px 0 0;font-size:10px}.tool-sources{margin-top:18px}.tool-sources a{text-underline-offset:3px;text-decoration:underline}.tool-assumptions p+p{margin-top:17px}.tool-assumptions .hw-text-link{margin:20px 0;font-size:12px}.tool-resources{grid-template-columns:1fr 1fr;gap:24px;display:grid}.tool-resources>a{background:var(--warm-surface);border:1px solid var(--rule);align-content:start;justify-items:start;padding:32px;display:grid}.tool-resources>a>svg{color:var(--bronze);margin-bottom:20px}.tool-resources h2{margin:14px 0;font-size:37px;line-height:1.1}.tool-resources p{max-width:400px;color:var(--text-muted);font-size:13px}.tool-resources .hw-text-link{margin-top:24px;font-size:12px}.tool-resources>a:hover{background:var(--ice)}.tool-scope{color:var(--text-muted);max-width:850px;padding:28px 0 50px;font-size:11px}.lab-noscript{color:var(--text-muted);padding:16px}@media (max-width:1050px){.tool-intro-grid{grid-template-columns:1.5fr 1fr;gap:30px}.lab-form,.lab-result{padding:25px}.lab-form-heading{flex-direction:column}.lab-mode-switch button{gap:12px;padding:17px 15px;font-size:12px}}@media (max-width:760px){.tool-intro{padding-top:25px}.tool-intro-grid,.lab-workbench,.tool-method-detail{grid-template-columns:minmax(0,1fr)}.tool-intro h1{font-size:clamp(39px,7.6vw,60px)}.tool-intro-note{max-width:540px}.tool-intro-note>svg{display:none}.lab-mode-switch button{flex-direction:column;align-items:start;gap:7px;padding:13px 10px;font-size:11px;line-height:1.45}.lab-mode-switch button>svg{display:none}.lab-form h2{font-size:32px}.lab-form-heading{flex-direction:row}.lab-form,.lab-result{padding:24px}.lab-molecule-art{height:clamp(220px,64vw,310px)}.lab-result-value{font-size:64px}.tool-methods{padding:55px 0 35px}.tool-section-heading{flex-direction:column;align-items:start;gap:22px}.tool-examples,.tool-resources{grid-template-columns:minmax(0,1fr)}.tool-examples article,.tool-examples article:first-child,.tool-examples article:last-child{border-right:0;border-bottom:1px solid var(--rule);padding:24px 0}.tool-examples article:last-child{border-bottom:0}.tool-method-detail{gap:30px}.tool-resources>a{padding:25px}}@media (max-width:380px){.lab-form,.lab-result{padding:19px}.lab-form-heading{flex-direction:column}.lab-mode-switch button>span{display:none}.lab-form h2{font-size:29px}}@media print{@page{size:auto;margin:16mm}body{background:#fff!important}.hw-header,.hw-footer,.skip-link,.tool-intro,.lab-mode-switch,.lab-form,.lab-result-actions,.tool-methods,.tool-resources,.tool-scope{display:none!important}.laboratory-page .hw-container{width:100%;max-width:none}.calculator-workspace{border:0}.lab-workbench{display:block}.lab-result{color:#000;background:#fff;padding:0;display:block}.lab-result *{color:#000!important;background:0 0!important}.lab-result-value{font-size:44px}.lab-result-note,.lab-record-inputs,.lab-rounding,.lab-result-footer{font-size:11px}.lab-equation,.lab-result>.hw-eyebrow,.lab-secondary,.lab-record-inputs,.lab-result-footer{border-color:#aaa}.lab-record-inputs>ul{display:block!important}}.lab-mass-link{text-underline-offset:4px;grid-column:1/-1;font-size:12px;text-decoration:underline}.lab-handoff-note{color:var(--text-muted);border:1px solid var(--rule);background:var(--warm-surface);grid-column:1/-1;padding:15px;font-size:12px;line-height:1.8}
