:root{--cat-metal_alcalino: #DC2626;--cat-metal_alcalino_terroso: #EA580C;--cat-metal_transicao: #CA8A04;--cat-metal_pos_transicao: #16A34A;--cat-semimetal: #0D9488;--cat-nao_metal: #2563EB;--cat-halogenio: #7C3AED;--cat-gas_nobre: #DB2777;--cat-lantanideo: #65A30D;--cat-actinideo: #92400E;--cat-desconhecida: #6B7280;--math: var(--txt)}@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--cat-metal_alcalino: #F87171;--cat-metal_alcalino_terroso: #FB923C;--cat-metal_transicao: #FACC15;--cat-metal_pos_transicao: #4ADE80;--cat-semimetal: #2DD4BF;--cat-nao_metal: #60A5FA;--cat-halogenio: #A78BFA;--cat-gas_nobre: #F472B6;--cat-lantanideo: #A3E635;--cat-actinideo: #D97706;--cat-desconhecida: #9CA3AF}}:root[data-theme="dark"]{--cat-metal_alcalino: #F87171;--cat-metal_alcalino_terroso: #FB923C;--cat-metal_transicao: #FACC15;--cat-metal_pos_transicao: #4ADE80;--cat-semimetal: #2DD4BF;--cat-nao_metal: #60A5FA;--cat-halogenio: #A78BFA;--cat-gas_nobre: #F472B6;--cat-lantanideo: #A3E635;--cat-actinideo: #D97706;--cat-desconhecida: #9CA3AF}.app{min-height: 100vh;display: flex;flex-direction: column}.appbar{--foco: #FFD166;position: sticky;top: 0;z-index: 30;display: flex;align-items: center;justify-content: space-between;gap: 8px;min-height: 60px;padding: max(8px,env(safe-area-inset-top)) max(12px,env(safe-area-inset-right)) 8px max(12px,env(safe-area-inset-left));background: var(--navy);color: #fff}.appbar-marca{display: flex;align-items: center;gap: 10px;min-width: 0;color: #fff;text-decoration: none}.appbar-logo{border-radius: 9px;flex: none}.appbar-textos{min-width: 0}.appbar-titulo{font-family: var(--fonte-marca);font-weight: 600;font-size: 1.125rem;line-height: 1.15;color: #fff}.appbar-sub{font-size: .75rem;color: var(--ouro);white-space: nowrap;overflow: hidden;text-overflow: ellipsis}.appbar-acoes{display: flex;align-items: center;gap: 2px;flex: none}.abas{background: var(--navy-2);position: sticky;top: 60px;z-index: 29}.abas ul{display: flex;gap: 2px;overflow-x: auto;scrollbar-width: thin;max-width: 1200px;margin: 0 auto;padding: 0 max(8px,env(safe-area-inset-left))}.abas a{--foco: #FFD166;display: inline-flex;align-items: center;gap: 6px;min-height: 44px;padding: 0 14px;color: #E2E8F0;text-decoration: none;white-space: nowrap;font-size: .875rem;font-weight: 600;border-bottom: 3px solid transparent}.abas a:hover{color: #fff}.abas a[aria-current="page"]{color: #fff;border-bottom-color: var(--ouro)}.conteudo{width: 100%;max-width: 1100px;margin: 0 auto;padding: 8px 16px 32px;flex: 1}.conteudo:focus{outline: none}.titulo-pagina{font-family: var(--fonte-marca);font-weight: 600;font-size: 1.5rem;line-height: 1.25;margin: 16px 0 4px}.titulo-pagina:focus{outline: none}.sub-pagina{color: var(--txt2);margin-bottom: 12px;max-width: 70ch}.secao{margin-top: 22px}.secao>h2{font-size: 1.0625rem;font-weight: 700;margin-bottom: 8px}.secao>h3,.sub-h{font-size: .9375rem;font-weight: 700;margin: 14px 0 6px}.rodape{padding: 16px;font-size: .75rem;color: var(--txt2);text-align: center;border-top: 1px solid var(--outline-v)}.rodape a{color: var(--txt2);margin: 0 6px}.voltar{display: inline-flex;align-items: center;gap: 4px;min-height: 44px;color: var(--primary);text-decoration: none;font-weight: 600;font-size: .875rem}.voltar:hover{text-decoration: underline}.hero{padding: 18px 0 6px}.hero h1{font-family: var(--fonte-marca);font-weight: 600;font-size: 1.625rem;line-height: 1.25}.hero p{color: var(--txt2);margin-top: 4px;max-width: 62ch}.busca-form{display: flex;align-items: center;gap: 2px;padding: 0 4px 0 14px;margin-top: 14px;border: 1.5px solid var(--borda-campo);border-radius: 16px;background: var(--surface);min-height: 54px;color: var(--primary)}.busca-form:focus-within{border-color: var(--primary);box-shadow: 0 0 0 3px color-mix(in srgb,var(--primary) 28%,transparent)}.busca-campo{flex: 1;min-width: 0;min-height: 50px;border: 0;background: transparent;padding: 12px 6px;font-size: 1rem;color: var(--txt);outline: none}.busca-campo::placeholder{color: var(--txt2);opacity: 1}.mini-btn{width: 44px;height: 44px;border-radius: 12px}.mini-btn.envia{color: var(--primary)}.sugestoes{margin-top: 12px;flex-wrap: nowrap;overflow-x: auto;scrollbar-width: thin;padding: 4px 0}.sugestoes .chip{flex: none}.chip.sug .ic{color: #B45309}@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .chip.sug .ic{color: var(--sec)}}:root[data-theme="dark"] .chip.sug .ic{color: var(--sec)}.ia-badge{display: inline-flex;align-items: center;gap: 6px;padding: 4px 12px;border-radius: 14px;font-size: .75rem;font-weight: 600;background: var(--primary-c);color: var(--on-primary-c);margin-top: 10px}.resposta{margin: 14px 0 8px;padding: 14px;border-radius: 16px;border: 1.5px solid var(--primary);background: color-mix(in srgb,var(--primary) 8%,var(--surface))}.resposta.nao-resolvida{border-color: var(--outline);background: var(--surface)}.resposta.recusa{border-color: var(--err);background: color-mix(in srgb,var(--err) 7%,var(--surface))}.resp-cab{display: flex;align-items: flex-start;gap: 10px}.resp-ic{color: var(--primary);margin-top: 2px;flex: none}.resposta.recusa .resp-ic{color: var(--err)}.resp-rotulo{font-size: .75rem;font-weight: 700;color: var(--primary)}.resposta.recusa .resp-rotulo{color: var(--err)}.resp-titulo{font-size: 1.0625rem;font-weight: 700;line-height: 1.35;overflow-wrap: anywhere}.resp-titulo:focus{outline: none}.bloco{margin-top: 12px}.bloco>.bloco-tit{font-size: .8125rem;font-weight: 700;color: var(--txt2);margin-bottom: 4px}.bloco-texto{font-size: .9375rem;line-height: 1.5;overflow-wrap: anywhere}.bloco-aviso{display: flex;gap: 8px;align-items: flex-start;padding: 10px 12px;border-radius: 12px;background: var(--sec-c);color: var(--on-sec-c);font-size: .875rem}.bloco-aviso .ic{margin-top: 2px;flex: none}.bloco-fonte{margin-top: 4px;font-size: .6875rem;color: var(--txt2);overflow-wrap: anywhere}.bloco-fonte a{color: var(--txt2)}.lista-pontos{padding-left: 18px;list-style: disc;font-size: .875rem}.lista-pontos li{margin: 4px 0}.resp-acoes{display: flex;flex-wrap: wrap;gap: 8px;margin-top: 12px}.resp-sugestoes{margin-top: 12px}.resp-sugestoes .rot{font-size: .75rem;font-weight: 700;color: var(--txt2);margin-bottom: 4px}.resp-fontes{margin-top: 12px;font-size: .75rem;color: var(--txt2)}.resp-fontes summary{cursor: pointer;min-height: 32px;display: flex;align-items: center;font-weight: 600}.resp-fontes ul{padding-left: 16px;list-style: disc}.resp-fontes li{margin: 3px 0;overflow-wrap: anywhere}.carregando{display: flex;flex-direction: column;align-items: center;gap: 14px;padding: 56px 16px}.spinner{width: 36px;height: 36px;border-radius: 50%;border: 4px solid var(--outline-v);border-top-color: var(--primary);animation: gira .9s linear infinite}.spinner.mini{width: 20px;height: 20px;border-width: 3px}@keyframes gira{to{transform: rotate(360deg)}}.cartoes{display: grid;grid-template-columns: repeat(auto-fill,minmax(220px,1fr));gap: 12px;margin-top: 12px}.cartao{display: flex;flex-direction: column;gap: 6px;padding: 14px;border-radius: 16px;background: var(--surface);border: 1px solid var(--outline-v);box-shadow: var(--sombra);text-decoration: none;color: var(--txt);min-height: 112px}.cartao:hover{border-color: var(--primary)}.cartao .ic{color: var(--primary)}.cartao strong{font-size: .9375rem}.cartao span{font-size: .8125rem;color: var(--txt2);line-height: 1.35}.rotulo-campo{display: block;margin-top: 10px;font-weight: 600;font-size: .875rem}.campo{width: 100%;margin-top: 6px;min-height: 48px;padding: 10px 12px;border: 1.5px solid var(--borda-campo);border-radius: 12px;background: var(--surface);color: var(--txt)}.campo:focus{border-color: var(--primary);outline: 3px solid color-mix(in srgb,var(--primary) 30%,transparent);outline-offset: 0}.campo::placeholder{color: var(--txt2);opacity: 1}.ajuda-campo{font-size: .75rem;color: var(--txt2);margin-top: 3px}.campos-linha{display: grid;grid-template-columns: minmax(0,1fr) minmax(96px,150px);gap: 8px;align-items: end}.grade-campos{display: grid;grid-template-columns: repeat(auto-fit,minmax(240px,1fr));gap: 0 16px}.form-calc{padding: 16px;border-radius: 16px;background: var(--surface);border: 1px solid var(--outline-v);box-shadow: var(--sombra)}.form-acoes{display: flex;flex-wrap: wrap;gap: 8px;margin-top: 14px}.exemplos{margin-top: 8px}.erro-calc{margin-top: 14px;padding: 12px;border-radius: 12px;background: var(--err-c);color: var(--txt);border: 1px solid color-mix(in srgb,var(--err) 45%,transparent);font-size: .9375rem}:root[data-theme="light"] .erro-calc,:root:not([data-theme="dark"]) .erro-calc{color: #7F1D1D}@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .erro-calc{color: #FECACA}}:root[data-theme="dark"] .erro-calc{color: #FECACA}.radios{border: 0;padding: 0;margin: 10px 0 0}.radios legend{font-weight: 600;font-size: .875rem;padding: 0;margin-bottom: 2px}.radio{display: flex;align-items: center;gap: 10px;min-height: 44px;cursor: pointer}.radio input{width: 22px;height: 22px;accent-color: var(--primary);margin: 0;flex: none}.res-calc{margin-top: 16px;padding: 14px;border-radius: 16px;background: color-mix(in srgb,var(--primary) 8%,var(--surface));border: 1.5px solid var(--primary)}.res-lista{display: grid;gap: 6px}.res-item{display: flex;flex-wrap: wrap;align-items: baseline;justify-content: space-between;gap: 4px 12px;padding: 6px 0;border-bottom: 1px solid var(--outline-v)}.res-item:last-child{border-bottom: 0}.res-item .rot{font-size: .875rem;color: var(--txt2)}.res-item .val{font-size: 1rem;font-weight: 600;font-variant-numeric: tabular-nums;overflow-wrap: anywhere}.res-item.destaque .val{font-size: 1.25rem;color: var(--primary)}.res-item .extra{font-size: .75rem;color: var(--txt2);width: 100%;text-align: right}.passos{margin: 12px 0 0;padding-left: 22px;list-style: decimal}.passo{margin: 12px 0;font-size: .9375rem}.passo.destaque>.passo-texto{font-weight: 700}.passo-texto{overflow-wrap: anywhere}.math{display: block;overflow-x: auto;overflow-y: hidden;padding: 6px 2px;max-width: 100%;color: var(--math)}.math .katex-display{margin: 0}.math.carregando-math{font-family: ui-monospace,Consolas,monospace;font-size: .8125rem;color: var(--txt2)}.equacao-final{padding: 10px 12px;border-radius: 12px;background: var(--surface);border: 1px solid var(--outline-v);font-size: 1.125rem;overflow-x: auto}.notas{margin-top: 10px;font-size: .8125rem;color: var(--txt2)}.notas li{margin: 3px 0}.formula{font-family: ui-serif,"Times New Roman",serif;white-space: nowrap}.formula sub,.formula sup{font-size: .7em;line-height: 0}.formula-grande{font-size: 1.5rem}.kv{display: grid;grid-template-columns: minmax(120px,36%) minmax(0,1fr);gap: 0;margin: 0}.kv dt,.kv dd{margin: 0;padding: 7px 4px;border-bottom: 1px solid var(--outline-v);font-size: .875rem;overflow-wrap: anywhere}.kv dt{color: var(--txt2)}.kv dd{font-variant-numeric: tabular-nums}@media (max-width: 480px){.kv{grid-template-columns: 1fr}.kv dt{border-bottom: 0;padding-bottom: 0;font-size: .75rem}}.tabela-rolagem{overflow-x: auto;margin-top: 6px}.tabela-dados{width: 100%;border-collapse: collapse;font-size: .8125rem}.tabela-dados caption{text-align: left;font-size: .75rem;color: var(--txt2);padding-bottom: 6px}.tabela-dados th,.tabela-dados td{padding: 6px 8px;border-top: 1px solid var(--outline-v);text-align: left;vertical-align: top;font-weight: 400}.tabela-dados thead th{font-weight: 700;border-top: 0;border-bottom: 2px solid var(--outline)}.tabela-dados tbody th{font-weight: 600}.tags{display: flex;flex-wrap: wrap;gap: 6px;margin-top: 6px}.tp-barra{display: flex;flex-wrap: wrap;gap: 8px 12px;align-items: end;margin: 8px 0}.tp-barra .campo{margin-top: 4px}.tp-barra label{font-size: .75rem;font-weight: 700;color: var(--txt2);display: block}.tp-barra select.campo{min-width: 112px;width: auto}.tp-barra input.campo{min-width: 180px}.legenda{display: flex;flex-wrap: wrap;gap: 6px;margin: 8px 0}.legenda .chip{gap: 8px}.cor-amostra{width: 14px;height: 14px;border-radius: 4px;border: 2px solid var(--cor);background: color-mix(in srgb,var(--cor) 30%,var(--surface));flex: none}.chip.on .cor-amostra{border-color: var(--on-primary)}.tp-rolagem{overflow-x: auto;padding: 4px 0 10px;scrollbar-width: thin}.tp-grade{display: grid;grid-template-columns: repeat(18,minmax(46px,1fr));grid-auto-rows: minmax(52px,auto);gap: 3px;min-width: 860px}.tp-lacuna{grid-row: 8;height: 6px}.el{--cor: var(--cat-desconhecida);position: relative;display: flex;flex-direction: column;align-items: center;justify-content: center;gap: 0;min-height: 52px;padding: 2px;border-radius: 8px;border: 2px solid var(--cor);background: color-mix(in srgb,var(--cor) 24%,var(--surface));color: var(--txt);cursor: pointer;text-align: center;line-height: 1.1}.el:hover{background: color-mix(in srgb,var(--cor) 42%,var(--surface))}.el .z{position: absolute;top: 2px;left: 4px;font-size: .625rem;opacity: .85}.el .s{font-size: 1.0625rem;font-weight: 700}.el .n{font-size: .5625rem;max-width: 100%;overflow: hidden;text-overflow: ellipsis;white-space: nowrap}.el.apagado{opacity: .28}.el.sel{outline: 3px solid var(--foco);outline-offset: 1px}.cat-metal_alcalino{--cor: var(--cat-metal_alcalino)}.cat-metal_alcalino_terroso{--cor: var(--cat-metal_alcalino_terroso)}.cat-metal_transicao{--cor: var(--cat-metal_transicao)}.cat-metal_pos_transicao{--cor: var(--cat-metal_pos_transicao)}.cat-semimetal{--cor: var(--cat-semimetal)}.cat-nao_metal{--cor: var(--cat-nao_metal)}.cat-halogenio{--cor: var(--cat-halogenio)}.cat-gas_nobre{--cor: var(--cat-gas_nobre)}.cat-lantanideo{--cor: var(--cat-lantanideo)}.cat-actinideo{--cor: var(--cat-actinideo)}.cat-desconhecida{--cor: var(--cat-desconhecida)}.marca-fblock{display: flex;align-items: center;justify-content: center;font-size: .6875rem;color: var(--txt2);border: 2px dashed var(--outline);border-radius: 8px;text-align: center}.tp-contagem{font-size: .8125rem;color: var(--txt2)}.g1{grid-column:1}.g2{grid-column:2}.g3{grid-column:3}.g4{grid-column:4}.g5{grid-column:5}.g6{grid-column:6}.g7{grid-column:7}.g8{grid-column:8}.g9{grid-column:9}.g10{grid-column:10}.g11{grid-column:11}.g12{grid-column:12}.g13{grid-column:13}.g14{grid-column:14}.g15{grid-column:15}.g16{grid-column:16}.g17{grid-column:17}.g18{grid-column:18}.p1{grid-row:1}.p2{grid-row:2}.p3{grid-row:3}.p4{grid-row:4}.p5{grid-row:5}.p6{grid-row:6}.p7{grid-row:7}.p9{grid-row:9}.p10{grid-row:10}.ficha-cab{display: flex;gap: 16px;align-items: center;margin: 12px 0;flex-wrap: wrap}.el-grande{--cor: var(--cat-desconhecida);width: 112px;height: 112px;flex: none;display: flex;flex-direction: column;align-items: center;justify-content: center;border-radius: 16px;border: 3px solid var(--cor);background: color-mix(in srgb,var(--cor) 24%,var(--surface));position: relative}.el-grande .z{position: absolute;top: 6px;left: 10px;font-size: .875rem}.el-grande .s{font-size: 2.75rem;font-weight: 700;line-height: 1}.el-grande .m{font-size: .75rem}.nav-el{display: flex;justify-content: space-between;gap: 8px;margin-top: 16px}.lista-links{display: flex;flex-wrap: wrap;gap: 6px}.lista-links a{display: inline-flex;align-items: center;min-height: 36px;padding: 4px 12px;border-radius: 18px;border: 1px solid var(--outline-v);background: var(--surface-v);color: var(--txt);text-decoration: none;font-size: .8125rem}.lista-links a:hover{border-color: var(--primary)}.molecula-caixa{display: flex;justify-content: center;padding: 8px;border-radius: 16px;border: 1px solid var(--outline-v);background: var(--surface)}canvas.molecula{max-width: 100%;height: auto}.msg-molecula{font-size: .8125rem;color: var(--txt2);padding: 24px 8px;text-align: center}.ghs{display: flex;flex-direction: column;gap: 10px}.ghs-pictos{display: flex;flex-wrap: wrap;gap: 10px}.picto{display: flex;flex-direction: column;align-items: center;gap: 4px;width: 104px;text-align: center;font-size: .6875rem;color: var(--txt2)}.picto img{width: 84px;height: 84px;background: #fff;border-radius: 8px;padding: 2px}.picto.grande{width: 148px}.picto.grande img{width: 112px;height: 112px}.sinal{display: inline-block;padding: 3px 10px;border-radius: 8px;font-weight: 800;font-size: .8125rem;letter-spacing: .02em}.sinal.perigo{background: var(--err-c);color: var(--err);border: 1px solid var(--err)}.sinal.atencao{background: var(--sec-c);color: var(--on-sec-c);border: 1px solid var(--sec)}.frases-h{display: grid;gap: 4px}.frases-h li{display: flex;gap: 8px;font-size: .875rem}.frases-h .cod{flex: none;font-weight: 700;font-variant-numeric: tabular-nums;min-width: 3.2em}.aviso-caixa{display: flex;gap: 8px;align-items: flex-start;padding: 10px 12px;border-radius: 12px;font-size: .8125rem;background: var(--sec-c);color: var(--on-sec-c);margin: 8px 0}.aviso-caixa.discreto{background: var(--surface-v);color: var(--txt2);font-size: .75rem}.aviso-caixa .ic{margin-top: 2px;flex: none}.linha-chave{display: flex;align-items: center;gap: 14px;min-height: 56px;padding: 8px 0}.linha-chave-txt{flex: 1;display: flex;flex-direction: column;gap: 2px}.linha-chave-txt strong{font-size: .875rem}.linha-chave-txt .mudo{font-size: .75rem}.grupo{margin-top: 22px;padding-bottom: 6px;border-bottom: 1px solid var(--outline-v);font-size: .8125rem;font-weight: 700;color: var(--primary)}.fonte-item{padding: 10px 0;border-bottom: 1px solid var(--outline-v);font-size: .875rem}.fonte-item strong{display: block}.fonte-item .meta{font-size: .75rem;color: var(--txt2)}.url{display: block;font-size: .75rem;color: var(--primary);overflow-wrap: anywhere}.lista-resultados li + li{border-top: 1px solid var(--outline-v)}.item-res{display: flex;flex-direction: column;gap: 2px;padding: 10px 4px;min-height: 52px;color: var(--txt);text-decoration: none}.item-res:hover strong{text-decoration: underline}.item-res .sub{font-size: .75rem;color: var(--txt2)}.vazio{padding: 28px 8px;text-align: center;color: var(--txt2)}.toast{position: fixed;left: 50%;bottom: max(16px,env(safe-area-inset-bottom));z-index: 200;transform: translate(-50%,24px);opacity: 0;max-width: min(92vw,460px);padding: 10px 16px;border-radius: 12px;background: var(--navy);color: #fff;font-size: .875rem;pointer-events: none;box-shadow: 0 6px 24px rgb(0 0 0 / .35);transition: opacity .2s,transform .2s}.toast.on{opacity: 1;transform: translate(-50%,0)}.tela-corpo{max-width: 760px;margin: 0 auto;padding: 8px 16px 40px}.tela-corpo h1{font-family: var(--fonte-marca);font-weight: 600;font-size: 1.5rem;margin: 16px 0 8px}.tela-corpo h2{font-size: 1.0625rem;margin: 20px 0 6px}.tela-corpo p,.tela-corpo li{font-size: .9375rem}.tela-corpo ul{padding-left: 18px;list-style: disc}.tela-corpo table{border-collapse: collapse;width: 100%;font-size: .8125rem}.tela-corpo th,.tela-corpo td{border: 1px solid var(--outline-v);padding: 6px 8px;text-align: left;vertical-align: top}.offline{padding-top: 48px}@media (max-width: 420px){.appbar-sub{font-size: .6875rem}.titulo-pagina{font-size: 1.3rem}.hero h1{font-size: 1.4rem}}@media (max-width: 359px){.conteudo{padding: 0 12px 24px}.appbar-sub{display: none}}@media print{.appbar,.abas,.rodape,.resp-acoes,.busca-form,.sugestoes{display: none !important}}[tabindex="-1"],:target{scroll-margin-top: 120px}