@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/_next/static/media/93a6e477e1480c92-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/_next/static/media/c7e0cf6c760983e7-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/_next/static/media/9d5a263311222317-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/_next/static/media/93a6e477e1480c92-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/_next/static/media/c7e0cf6c760983e7-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/_next/static/media/9d5a263311222317-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/_next/static/media/93a6e477e1480c92-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/_next/static/media/c7e0cf6c760983e7-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/_next/static/media/9d5a263311222317-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:700;font-stretch:100%;font-display:swap;src:url(/_next/static/media/93a6e477e1480c92-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:700;font-stretch:100%;font-display:swap;src:url(/_next/static/media/c7e0cf6c760983e7-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Bricolage_Grotesque_6310ba;font-style:normal;font-weight:700;font-stretch:100%;font-display:swap;src:url(/_next/static/media/9d5a263311222317-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Bricolage_Grotesque_Fallback_6310ba;src:local("Arial");ascent-override:88.21%;descent-override:25.61%;line-gap-override:0.00%;size-adjust:105.43%}.__className_6310ba{font-family:__Bricolage_Grotesque_6310ba,__Bricolage_Grotesque_Fallback_6310ba;font-style:normal}.__variable_6310ba{--font-chem-display:"__Bricolage_Grotesque_6310ba","__Bricolage_Grotesque_Fallback_6310ba"}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/_next/static/media/7b19b489dc6743ba-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/_next/static/media/28793f5c5e3d822d-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/_next/static/media/c9c3823090ec8b55-s.woff2) format("woff2");unicode-range:u+0370-0377,u+037a-037f,u+0384-038a,u+038c,u+038e-03a1,u+03a3-03ff}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/_next/static/media/b3bf17a9041d9433-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/_next/static/media/2801417b65625cf5-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/_next/static/media/26d4368bf94c0ec4-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/_next/static/media/7b19b489dc6743ba-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/_next/static/media/28793f5c5e3d822d-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/_next/static/media/c9c3823090ec8b55-s.woff2) format("woff2");unicode-range:u+0370-0377,u+037a-037f,u+0384-038a,u+038c,u+038e-03a1,u+03a3-03ff}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/_next/static/media/b3bf17a9041d9433-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/_next/static/media/2801417b65625cf5-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/_next/static/media/26d4368bf94c0ec4-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/_next/static/media/7b19b489dc6743ba-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/_next/static/media/28793f5c5e3d822d-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/_next/static/media/c9c3823090ec8b55-s.woff2) format("woff2");unicode-range:u+0370-0377,u+037a-037f,u+0384-038a,u+038c,u+038e-03a1,u+03a3-03ff}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/_next/static/media/b3bf17a9041d9433-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/_next/static/media/2801417b65625cf5-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__IBM_Plex_Sans_1bc20f;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/_next/static/media/26d4368bf94c0ec4-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__IBM_Plex_Sans_Fallback_1bc20f;src:local("Arial");ascent-override:101.32%;descent-override:27.18%;line-gap-override:0.00%;size-adjust:101.17%}.__className_1bc20f{font-family:__IBM_Plex_Sans_1bc20f,__IBM_Plex_Sans_Fallback_1bc20f;font-style:normal}.__variable_1bc20f{--font-chem-ui:"__IBM_Plex_Sans_1bc20f","__IBM_Plex_Sans_Fallback_1bc20f"}.chem-root{--chem-ink:#203d32;--chem-muted:#69796d;--chem-line:#dce1d5;--chem-green:#25684e;background:#f5f5ed;font-family:var(--font-chem-ui),sans-serif;min-height:100vh;padding:0 clamp(18px,4vw,64px);font-size:14px;line-height:1.6}.chem-root *{box-sizing:border-box}.chem-root button,.chem-root input,.chem-root textarea{font:inherit}.chem-root a,.chem-root button,.chem-root summary{-webkit-tap-highlight-color:transparent}.chem-root button{cursor:pointer}.chem-root a:focus-visible,.chem-root button:focus-visible,.chem-root input:focus-visible,.chem-root summary:focus-visible,.chem-root textarea:focus-visible{outline:3px solid #b07333;outline-offset:4px}.chem-brand,.chem-root h1,.chem-root h2,.chem-root h3{font-family:var(--font-chem-display),sans-serif}.chem-header{justify-content:space-between;padding:25px 0;border-bottom:1px solid var(--chem-line);gap:24px}.chem-brand,.chem-header{display:flex;align-items:center}.chem-brand{gap:11px;text-decoration:none;color:inherit;font-size:27px;font-weight:700;line-height:1.1;letter-spacing:-1px}.chem-brand>span{display:grid;place-items:center;width:43px;height:43px;background:var(--chem-green);color:#d8efb1;border-radius:12px}.chem-brand div>span{display:block;font-family:var(--font-chem-ui),sans-serif;letter-spacing:2px;margin-top:6px;font-weight:600}.chem-header nav{display:flex;align-items:center;gap:30px}.chem-header nav a{display:flex;align-items:center;gap:8px;color:var(--chem-muted);text-decoration:none}.chem-header nav a:hover{color:var(--chem-green)}.chem-header nav span{font-size:10px;padding:1px 6px;background:#e5eadb;border-radius:4px}.chem-school{font-size:10px;letter-spacing:1.1px;border:1px solid #cdd7c5;padding:7px 12px;border-radius:100px;white-space:nowrap}.chem-hero{justify-content:space-between;gap:32px;padding:47px 0 39px}.chem-eyebrow,.chem-hero{display:flex;align-items:center}.chem-eyebrow{font-size:10px;font-weight:600;letter-spacing:1.6px;gap:8px;margin:0 0 14px;color:#5d7562}.chem-eyebrow>span:not(.chem-divider){width:6px;height:6px;border-radius:50%;background:#5b8f53}.chem-hero h1{font-size:clamp(32px,4vw,55px);font-weight:500;line-height:1.12;letter-spacing:-2px;margin:0 0 19px}.chem-hero h1 em{font-family:Georgia,serif;font-weight:400;color:#488459}.chem-hero p:not(.chem-eyebrow){color:var(--chem-muted);font-size:13px;line-height:1.8;margin:0}.chem-hero-aside{display:flex;gap:24px;align-items:center;padding-right:25px}.chem-element{width:113px;height:134px;border:1px solid #b9ccac;background:#e7edda;display:flex;flex-direction:column;justify-content:center;padding:10px 18px;transform:rotate(-7deg);border-radius:9px;box-shadow:6px 7px 0 #e4e6d9}.chem-element small{font-size:13px}.chem-hero-aside .chem-element strong{font-size:58px;line-height:1;font-weight:500}.chem-element span{font-size:11px;margin-top:7px}.chem-hero-aside>div>strong{font-size:14px}.chem-hero-aside a{display:flex;align-items:center;gap:8px;font-size:12px;color:#35674b;margin-top:16px;font-weight:600}.chem-gradebar{display:flex;align-items:center;gap:24px;padding:17px 0;border-top:1px solid var(--chem-line);border-bottom:1px solid var(--chem-line)}.chem-gradebar>span{font-size:9px;font-weight:600;letter-spacing:1.2px}.chem-gradebar>div{display:flex;gap:6px}.chem-gradebar button{border:1px solid transparent;background:transparent;border-radius:6px;padding:6px 14px;font-size:12px;color:#617362}.chem-gradebar button[aria-pressed=true]{background:#244f3b;color:#f3f7e9}.chem-gradebar small{margin-left:auto;color:#7a8575;font-size:11px}.chem-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:30px;padding:30px 0 50px;scroll-margin-top:20px}.chem-section-label{display:flex;align-items:center;gap:8px;font-size:9px;letter-spacing:1.4px;font-weight:600}.chem-section-label>span{margin-left:auto;color:#77856c}.chem-search{display:flex;align-items:center;gap:8px;border:1px solid var(--chem-line);border-radius:6px;padding:9px 10px;margin:19px 0 14px;color:#84917d}.chem-search input{width:100%;min-width:0;background:none;border:0;outline:none;font-size:11px;color:#264435}.chem-lab-list{display:flex;flex-direction:column;gap:5px}.chem-lab-list>button{display:flex;text-align:left;align-items:center;gap:10px;width:100%;background:transparent;color:#284535;border:1px solid transparent;padding:12px 9px;border-radius:8px}.chem-lab-list>button:hover{background:#ecefe1}.chem-lab-list>button[aria-current=true]{background:#e3ebd8;border-color:#c4d4b5}.chem-lab-icon{display:grid;place-items:center;width:30px;flex-shrink:0;color:#6f8c62}.chem-lab-list button>span:nth-child(2){flex:1}.chem-lab-list strong{font-size:11px;font-weight:600;display:block}.chem-lab-list small{display:block;font-size:8px;color:#72826b;letter-spacing:.15px;margin-top:3px}.chem-lab-list button>svg{flex-shrink:0}.chem-library-note{margin-top:30px;background:#eeeedf;border:1px dashed #cbd2bb;padding:18px;border-radius:8px}.chem-library-note>strong{display:block;font-size:12px;margin-top:8px}.chem-library-note p{font-size:11px;color:#74816c;margin:5px 0 0}.chem-empty{font-size:12px;color:#6b7769;padding:15px}.chem-empty button{display:block;text-decoration:underline;margin-top:12px}.chem-main{min-width:0}.chem-lab-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px}.chem-lab-heading .chem-eyebrow{font-size:9px;margin-bottom:6px}.chem-divider{color:#a3af99;padding:0 6px}.chem-lab-heading h2{font-size:27px;font-weight:500;margin:0}.chem-lab-heading p:last-child{font-size:12px;color:#75806f;margin:3px 0 0}.chem-reset{display:flex;align-items:center;gap:7px;color:#60765e;font-size:10px!important;white-space:nowrap;border:1px solid #d2dac6;border-radius:5px;padding:7px 10px;background:transparent}.chem-bench{display:grid;grid-template-columns:minmax(0,1fr) 245px;border:1px solid #d6decd;border-radius:12px;overflow:hidden;min-height:398px;background:#fafaf5}.chem-view{position:relative;background:radial-gradient(ellipse at 50% 55%,#244e40,#142f26 70%);display:flex;flex-direction:column;min-width:0;color:#cae3d2;isolation:isolate}.chem-view:before{content:"";position:absolute;inset:0;z-index:-1;background-image:linear-gradient(#adcbae08 1px,transparent 0),linear-gradient(90deg,#adcbae08 1px,transparent 0);background-size:28px 28px}.chem-view-top{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;font-size:8px;letter-spacing:1.4px;color:#a5c2ad;gap:8px}.chem-view-top>span:first-child{display:flex;align-items:center;gap:7px}.chem-live-dot{width:5px;height:5px;background:#c2da8f;border-radius:50%}.chem-model{height:315px;min-height:240px;flex:1;position:relative;touch-action:pan-y}.chem-model>div{position:absolute!important;inset:0}.chem-view-bottom{justify-content:space-between;gap:8px;padding:13px 18px;color:#97b4a2}.chem-view-bottom,.chem-view-bottom button{display:flex;align-items:center;font-size:9px}.chem-view-bottom button{gap:5px;background:#d1e7d410;border:1px solid #b6d3bb30;padding:5px 7px;border-radius:4px;color:#cbdfcf;white-space:nowrap}.chem-controls{padding:22px 20px;display:flex;flex-direction:column}.chem-controls>.chem-section-label{font-size:8px;color:#748367}.chem-controls h3{font-size:16px;margin:5px 0 18px;font-weight:500}.chem-choice{border:0;padding:0;margin:0 0 18px;min-width:0}.chem-choice legend{font-size:10px;font-weight:600;margin-bottom:8px}.chem-choice>div{display:flex;flex-wrap:wrap;gap:5px}.chem-choice button{padding:6px 9px;border:1px solid #d9dfd1;border-radius:4px;background:#fffef8;font-size:10px;color:#64725d}.chem-choice button[aria-pressed=true]{background:#e7efdb;border-color:#89a679;color:#335c39}.chem-range{display:block;margin-bottom:17px;font-size:10px}.chem-range>span{display:flex;justify-content:space-between}.chem-range strong{color:#326f4b;font-weight:500}.chem-range input{width:100%;accent-color:#54824b;height:4px;margin:16px 0 9px;display:block}.chem-range small{font-size:8px;color:#8a9580;display:flex;justify-content:space-between}.chem-hint{font-size:10px;line-height:1.6;color:#7c8871;margin:0 0 16px}.chem-prediction{margin-top:auto;padding-top:15px;border-top:1px solid #e1e6d7}.chem-prediction>span{font-size:8px;letter-spacing:1px;color:#778961}.chem-prediction p{font-family:Georgia,serif;font-size:13px;line-height:1.5;color:#52664a;margin:6px 0 0}.chem-run{display:flex;align-items:center;justify-content:center;gap:7px;background:#2b674c;color:#fff;border:0;border-radius:6px;font-size:11px!important;padding:10px;margin:0 0 20px}.chem-formula{background:#e8eddf;padding:10px;border-radius:5px;font-family:monospace;font-size:10px;margin-bottom:18px}.chem-metrics{display:flex;gap:20px;margin-bottom:20px}.chem-metrics small{font-size:8px;letter-spacing:1px;display:block}.chem-metrics strong{font-size:30px;font-weight:400}.chem-metrics strong small{display:inline}.chem-observation{display:flex;gap:12px;padding:16px 19px;background:#eaf0e2;border:1px solid #d8e1ce;border-radius:8px;margin:13px 0 27px}.chem-observation>span{color:#547942;padding-top:3px}.chem-observation strong{font-size:11px}.chem-observation p{font-size:12px;line-height:1.6;color:#63765b;margin:3px 0 0}.chem-learning{display:grid;grid-template-columns:1fr 1fr;gap:28px}.chem-learning article{padding:2px 0}.chem-learning .chem-eyebrow{font-size:8px;margin-bottom:9px}.chem-learning h3{font-size:18px;font-weight:500;line-height:1.4;margin:0 0 12px}.chem-learning p:not(.chem-eyebrow){font-size:12px;line-height:1.9;color:#697863}.chem-everyday{border-left:2px solid #bbc7a0;padding-left:14px;margin:20px 0}.chem-everyday strong{font-size:10px;color:#557049}.chem-everyday p{margin:4px 0}.chem-learning details{font-size:10px;color:#71806a}.chem-learning summary{cursor:pointer}.chem-learning details p{font-size:10px!important}.chem-answers{display:flex;flex-direction:column;gap:7px}.chem-answers button{display:flex;align-items:center;gap:10px;text-align:left;background:#fcfcf6;border:1px solid #dce2d1;padding:11px 12px;border-radius:7px;font-size:11px;color:#586d50}.chem-answers button>span{border:1px solid #dce2d1;border-radius:4px;padding:1px 5px;font-size:9px}.chem-answers .correct{background:#e1edda;border-color:#6c9b5b}.chem-answers .incorrect{background:#f9eadb;border-color:#c39067}.chem-feedback{font-size:11px!important;padding:10px 13px;background:#ecefdf;border-radius:6px}.chem-notebook{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin:30px 0 0;padding:23px;border:1px solid #d7dec9;border-radius:10px;background:#eeeede}.chem-notebook .chem-eyebrow{font-size:8px}.chem-notebook h3{font-size:19px;margin:0 0 8px;font-weight:500}.chem-notebook p{font-size:11px;line-height:1.8;color:#728069}.chem-notebook small{font-size:9px;color:#78866b}.chem-notebook label>span{display:block;font-size:10px;margin-bottom:8px}.chem-notebook textarea{display:block;width:100%;min-height:100px;resize:vertical;border:1px solid #d2dbc4;background:#fafbf1;border-radius:6px;padding:12px;font-size:11px;color:#426039}.chem-footer{border-top:1px solid var(--chem-line);padding:28px 0 35px;color:#73826b;font-size:10px;display:grid;grid-template-columns:1fr 1.5fr 1fr;gap:35px}.chem-footer>div:first-child{display:flex;align-items:center;gap:7px;flex-wrap:wrap;align-content:start}.chem-footer>div:first-child span{flex-basis:100%;font-size:9px}.chem-footer p{margin:0;line-height:1.8}.chem-footer>div:last-child{display:flex;flex-direction:column;gap:5px}.chem-footer a{display:flex;align-items:center;gap:6px;color:#4a6c43}.chem-diagram{width:100%;height:100%;min-height:260px}.chem-diagram text{fill:#c1ddca;font-size:13px;text-anchor:middle;font-family:var(--font-chem-ui),sans-serif}.chem-diagram text[fill="#102b21"],.chem-diagram text[fill="#173a2e"]{fill:#173a2e}.chem-diagram rect{transition:all .65s ease}.chem-loading{height:100%;padding:30px;text-align:center;color:#c1d8c7;font-size:13px}.chem-legend,.chem-loading{display:flex;align-items:center;justify-content:center}.chem-legend{gap:5px;font-size:9px;padding:0 12px 12px;color:#edf1e9;flex-wrap:wrap}.chem-legend b{color:#ee8c77;font-weight:400}.chem-legend i{color:#8095a4;font-style:normal}.chem-legend span{color:#99b3a3;margin-right:8px}.chem-vapour{animation:chem-rise 2s ease-in-out infinite}@keyframes chem-rise{50%{transform:translateY(-12px);opacity:.3}}@media(min-width:1600px){.chem-root{padding-left:max(40px,calc((100vw - 1490px)/2));padding-right:max(40px,calc((100vw - 1490px)/2))}.chem-bench{min-height:450px}}@media(max-width:1100px){.chem-header nav{gap:15px}.chem-school{display:none}.chem-hero-aside{padding:0}.chem-hero-aside p{font-size:11px!important}.chem-element{width:85px;height:110px}.chem-hero-aside .chem-element strong{font-size:42px}.chem-layout{grid-template-columns:205px minmax(0,1fr);gap:20px}.chem-bench{grid-template-columns:minmax(0,1fr) 210px}.chem-controls{padding:18px 14px}.chem-view-top{padding:15px 12px;font-size:7px}.chem-view-bottom{padding:12px;font-size:8px}.chem-model{height:290px}}@media(max-width:850px){.chem-header nav a:first-child,.chem-hero-aside{display:none}.chem-layout{grid-template-columns:1fr}.chem-library-note{display:none}.chem-lab-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}.chem-lab-list>button{padding:9px 6px;gap:4px}.chem-lab-list>button>svg{display:none}.chem-lab-list strong{font-size:10px}.chem-lab-list small{font-size:7px}.chem-search{max-width:350px;margin:12px 0}.chem-lab-heading{margin-top:8px}.chem-bench{grid-template-columns:minmax(0,1fr) 235px}.chem-model{height:315px}.chem-footer{grid-template-columns:1fr 2fr}.chem-footer>div:last-child{grid-column:2}.chem-gradebar{gap:12px}.chem-gradebar small{display:none}}@media(max-width:580px){.chem-root{padding:0 18px}.chem-header{padding:19px 0;gap:8px}.chem-brand{font-size:23px}.chem-header nav{gap:12px}.chem-header nav a{font-size:10px}.chem-header nav a:last-child{display:none}.chem-hero{padding:32px 0 27px}.chem-hero h1{font-size:35px;letter-spacing:-1.4px}.chem-hero p:not(.chem-eyebrow){font-size:12px}.chem-eyebrow{font-size:8px}.chem-gradebar{display:block;padding:13px 0}.chem-gradebar>span{font-size:8px;display:block;margin-bottom:9px}.chem-gradebar>div{justify-content:space-between;gap:3px}.chem-gradebar button{padding:6px 10px;font-size:10px}.chem-layout{padding-top:20px;gap:18px}.chem-lab-list{grid-template-columns:repeat(2,minmax(0,1fr))}.chem-lab-list>button{min-height:54px}.chem-lab-icon{width:23px}.chem-lab-list small{font-size:7px}.chem-lab-heading h2{font-size:23px}.chem-lab-heading .chem-eyebrow{font-size:7px;letter-spacing:1px}.chem-reset{font-size:0!important;padding:8px}.chem-reset svg{width:16px}.chem-bench{grid-template-columns:1fr}.chem-model{height:295px;flex:none}.chem-controls{padding:20px}.chem-controls h3{margin-bottom:14px}.chem-choice button{font-size:11px;padding:8px 12px}.chem-prediction{margin-top:5px}.chem-learning{grid-template-columns:1fr;gap:25px}.chem-notebook{grid-template-columns:1fr;padding:18px;gap:14px}.chem-footer{grid-template-columns:1fr;gap:16px}.chem-footer>div:last-child{grid-column:1}.chem-observation{padding:13px}.chem-view-bottom{font-size:9px}}@media(prefers-reduced-motion:reduce){.chem-root *{animation:none!important;transition:none!important;scroll-behavior:auto!important}}.chem-learning p:not(.chem-eyebrow){font-size:14px;line-height:1.8}.chem-answers button,.chem-choice legend,.chem-range{font-size:12px}.chem-choice button{font-size:11px}.chem-observation p{font-size:13px}.chem-lab-list strong,.chem-notebook p,.chem-notebook textarea{font-size:12px}.chem-root .chem-lab-list small{font-size:9px}.chem-view-bottom{font-size:10px}.chem-hint{font-size:11px}.chem-controls h3{font-size:17px}@media(max-width:580px){.chem-lab-list strong{font-size:11px}.chem-root .chem-lab-list small{font-size:8px}}.chem-model{background:radial-gradient(circle at 50% 38%,rgba(92,201,157,.24),transparent 42%),linear-gradient(145deg,#173d31,#0d271f);box-shadow:inset 0 0 80px rgba(96,214,164,.1)}.chem-hotspot,.chem-model-chip{pointer-events:none;display:flex;flex-direction:column;gap:2px;padding:9px 11px;border:1px solid rgba(181,232,185,.34);border-radius:8px;background:rgba(10,33,27,.86);box-shadow:0 10px 28px rgba(0,0,0,.24);color:#e2f4e7;white-space:nowrap;backdrop-filter:blur(8px)}.chem-hotspot b{font-family:var(--font-chem-display),sans-serif;font-size:18px;color:#d5f6bc;line-height:1}.chem-hotspot span{font-size:11px;font-weight:600}.chem-hotspot small{font-size:9px;color:#b0d1bc}.chem-model-chip{font-size:9px;letter-spacing:.3px;color:#c8e3cf;transform:translateY(8px)}.chem-model>.chem-studio.is-expanded{position:fixed!important;inset:20px}.chem-view:has(.is-expanded){isolation:auto;overflow:visible;z-index:100}@media(max-width:580px){.chem-model>.chem-studio.is-expanded{inset:8px}}@media(min-width:951px){.chem-library{position:sticky;top:75px}.chem-lab-list{max-height:calc(100dvh - 290px);overflow-y:auto;scrollbar-width:thin;scrollbar-color:#c3c9b2 transparent}.chem-library-note{margin-top:18px}}.chem-hero{position:absolute!important;width:1px;height:1px;padding:0!important;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.chem-loading{color:#756354}.chem-root{--chem-ink:#393e36;--chem-muted:#817e72;--chem-line:#ded9ca;--chem-green:#677f5d;background:#f0ece1;padding:0 26px;color:var(--chem-ink)}.chem-header{padding:21px 0}.chem-brand{font-family:Georgia,serif;font-weight:400;font-size:31px}.chem-brand>span{background:#e1e8d4;color:#6c855d;border-radius:50%}.chem-brand div>span{font-size:8px;letter-spacing:2.7px}.chem-header nav{font-size:12px}.chem-hero{padding:24px 0 22px;gap:15px}.chem-hero h1{font-family:Georgia,serif;font-size:36px;font-weight:400;letter-spacing:-1px;margin:0 0 6px}.chem-hero h1 em{color:#8e78a0}.chem-hero .chem-eyebrow{margin-bottom:8px;font-size:8px}.chem-hero p:not(.chem-eyebrow){font-size:12px}.chem-studio-badge{border:1px solid #d6d0bd;border-radius:30px;padding:9px 15px;color:#7f746a;font-size:11px}.chem-gradebar{padding:9px 0}.chem-layout{grid-template-columns:230px minmax(0,1fr);gap:22px;padding-top:22px}.chem-library{background:#f8f5eb;border:1px solid #ded9ca;border-radius:18px;padding:20px 14px;align-self:start;box-shadow:0 4px 12px #514b3610}.chem-lab-list{gap:7px}.chem-lab-list>button{min-height:61px;border-radius:11px;padding:10px 6px}.chem-lab-list>button[aria-current=true]{background:#e7ebd8;border-color:#cdd8b8;box-shadow:inset 3px 0 #839769}.chem-lab-icon{background:linear-gradient(135deg,#e8deeb,#d6e0ce);border:1px solid #e0d9cb;border-radius:12px;width:37px;height:41px;color:#8b729d}.chem-library-note{background:#f2eedf}.chem-lab-heading{margin-bottom:15px}.chem-lab-heading h2{font-family:Georgia,serif;font-size:32px;letter-spacing:-.8px}.chem-bench{grid-template-columns:minmax(0,1fr) 250px;gap:18px;background:none;border:0;overflow:visible}.chem-view{background:#f4f0e5;border:1px solid #ded9ca;border-radius:18px;overflow:hidden;box-shadow:0 5px 15px #514b3610}.chem-view-top{color:#83756d;padding:16px 20px;background:transparent}.chem-live-dot{background:#83a479}.chem-model{height:510px;min-height:510px;background:#f4f0e5;box-shadow:none}.chem-view-bottom{color:#827b6f;background:transparent;border-top:1px solid #e5dece;padding:12px 16px;gap:12px}.chem-view-bottom button{color:#6b795f}.chem-controls{border:1px solid #ded9ca;border-radius:18px;background:#f8f5eb;padding:22px 19px;box-shadow:0 4px 12px #514b3610}.chem-controls h3{font-family:Georgia,serif;font-size:24px;font-weight:400;margin:12px 0 24px}.chem-choice button{background:#f0ecdf;border-color:#dcd6c5;color:#6f725f}.chem-choice button[aria-pressed=true]{background:#e4e9d6;color:#405837;border-color:#a5b892}.chem-prediction{background:#eee6ef;border-color:#dacede}.chem-observation{border-radius:13px;background:#e8ecdf;border:1px solid #d5ddc5;margin-top:17px}.chem-learning{gap:22px}.chem-learning>article,.chem-notebook{background:#f8f5eb;border:1px solid #ded9ca;border-radius:16px;padding:24px}.chem-learning h3,.chem-notebook h3{font-family:Georgia,serif;font-weight:400;font-size:25px}.chem-studio{position:relative;width:100%;height:100%}.chem-studio,.chem-studio canvas{touch-action:none}.chem-studio-tools{position:absolute;left:16px;right:16px;top:0;z-index:2;display:flex;gap:5px;flex-wrap:wrap}.chem-studio-tools button{border:1px solid #dcd5c3;background:#faf7edeb;color:#716858;box-shadow:0 2px 5px #4b422010;border-radius:7px;padding:7px 10px;font-size:10px}.chem-studio-tools button[aria-pressed=true]{background:#e1e8d0;border-color:#acba93;color:#49613d}.chem-studio-caption{position:absolute;bottom:12px;left:16px;right:16px;pointer-events:none;display:flex;flex-direction:column;gap:4px;color:#8c8474;font-size:10px}.chem-studio-caption strong{color:#655a73;font-size:11px;font-weight:500}.chem-object-label{display:block;padding:4px 8px;background:#fbf8eeec;border:1px solid #d8d0bd;color:#756354;border-radius:5px;font-size:10px;white-space:nowrap;box-shadow:0 2px 5px #5e543414}.chem-studio.is-expanded{position:fixed;inset:20px;width:calc(100vw - 40px);height:calc(100vh - 40px);z-index:100;background:#f4f0e5;border:1px solid #d9d1bf;border-radius:20px;box-shadow:0 0 0 40px #302b24aa;overflow:hidden}.chem-studio.is-expanded .chem-studio-tools{top:18px}@media(min-width:1700px){.chem-model{height:620px;min-height:620px}.chem-bench{grid-template-columns:minmax(0,1fr) 290px}.chem-layout{grid-template-columns:260px minmax(0,1fr)}}@media(max-width:1200px){.chem-layout{grid-template-columns:190px minmax(0,1fr);gap:16px}.chem-bench{grid-template-columns:minmax(0,1fr) 210px;gap:12px}.chem-model{height:470px;min-height:470px}.chem-controls{padding:18px 14px}}@media(max-width:950px){.chem-layout{grid-template-columns:1fr}.chem-lab-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.chem-library{padding:14px}.chem-library-note{display:none}.chem-model{height:460px;min-height:460px}.chem-bench{grid-template-columns:minmax(0,1fr) 230px}}@media(max-width:580px){.chem-root{padding:0 14px}.chem-hero h1{font-size:29px}.chem-studio-badge{display:none}.chem-bench{grid-template-columns:1fr}.chem-model{height:420px;min-height:420px}.chem-lab-list{grid-template-columns:repeat(2,minmax(0,1fr))}.chem-lab-icon{width:29px;height:34px}.chem-lab-heading h2{font-size:28px}.chem-view-bottom{font-size:9px}.chem-studio-tools{left:10px;right:10px}.chem-studio-tools button{padding:6px 8px;font-size:9px}.chem-studio-caption{font-size:9px}.chem-controls h3{margin-bottom:12px}.chem-studio.is-expanded{inset:8px;width:calc(100vw - 16px);height:calc(100dvh - 16px)}.chem-learning>article{padding:18px}}.dark .chem-root{--chem-ink:#e4eee9;--chem-muted:#a9b9b1;--chem-line:#2c413b;--chem-green:#91ba84;background:#0b1412;color:var(--chem-ink)}.dark .chem-footer,.dark .chem-footer a,.dark .chem-gradebar button,.dark .chem-header nav a,.dark .chem-header nav span,.dark .chem-hint,.dark .chem-lab-heading p:last-child,.dark .chem-learning p:not(.chem-eyebrow),.dark .chem-notebook p,.dark .chem-notebook small,.dark .chem-range small,.dark .chem-reset,.dark .chem-school,.dark .chem-section-label>span{color:var(--chem-muted)}.dark .chem-header nav span{background:#263a32}.dark .chem-school{border-color:#405950}.dark .chem-brand>span{background:#233c32;color:#c4edb7}.dark .chem-studio-badge{border-color:#405950;color:#b7c8c0}.dark .chem-gradebar button[aria-pressed=true]{background:#a8d59b;color:#102017}.dark .chem-controls,.dark .chem-learning>article,.dark .chem-library,.dark .chem-notebook{background:#14211e;border-color:var(--chem-line);box-shadow:0 5px 18px #0000002e}.dark .chem-feedback,.dark .chem-formula,.dark .chem-library-note{background:#1d3029;border-color:#3b554b;color:#cad9d1}.dark .chem-lab-list>button{color:#dbe8e1}.dark .chem-empty,.dark .chem-lab-list small{color:#a8b9b0}.dark .chem-lab-list>button:hover{background:#1d3029}.dark .chem-lab-list>button[aria-current=true]{background:#263d33;border-color:#52725f;box-shadow:inset 3px 0 #a4c789}.dark .chem-lab-icon{background:linear-gradient(135deg,#2d3544,#213d35);border-color:#40524b;color:#c4a9d4}.dark .chem-view{border-color:var(--chem-line);box-shadow:0 5px 18px #0000003d}.dark .chem-model,.dark .chem-view{background:#101c19}.dark .chem-view-bottom,.dark .chem-view-top{color:#b7c9c0}.dark .chem-view-bottom{border-color:#2c413b}.dark .chem-view-bottom button{background:#1a3029;color:#d4e6dc;border-color:#456253}.dark .chem-answers button,.dark .chem-choice button,.dark .chem-notebook textarea{background:#1a2a25;border-color:#3a5148;color:#dce9e2}.dark .chem-answers .correct,.dark .chem-choice button[aria-pressed=true]{background:#304c3b;border-color:#79a46f;color:#eff9eb}.dark .chem-answers .incorrect{background:#4a3027;border-color:#a97860;color:#f5ddd3}.dark .chem-prediction{background:#292334;border-color:#4d415d}.dark .chem-observation{background:#1d322a;border-color:#3f5c4e}.dark .chem-observation p{color:#b9cbc1}.dark .chem-everyday{border-color:#71936b}.dark .chem-everyday strong{color:#b7d4a9}.dark .chem-object-label{background:#172823ec;border-color:#3c564b;color:#d7e9de;box-shadow:0 2px 5px #00000040}.dark .chem-studio-tools button{background:#172823eb;border-color:#3c564b;color:#d7e9de;box-shadow:0 2px 5px #00000035}.dark .chem-studio-tools button[aria-pressed=true]{background:#35513f;border-color:#7ba06f;color:#f1faeb}.dark .chem-studio-caption{color:#b0c4b9}.dark .chem-studio-caption strong{color:#d9c8e8}.dark .chem-studio.is-expanded{background:#101c19;border-color:#3b554b;box-shadow:0 0 0 40px #000000bb}