.f{display:inline-table;text-align:center;vertical-align:40%;margin:0 .1rem;border-collapse:collapse;text-indent:0}.f::before,.f::after{content:none}.f u,.f em{display:table-row;text-align:center}.f u{text-decoration:none}.f em{font-style:normal}.f u{border-bottom:.1em solid currentColor;font-size:90%;line-height:140%}.f em{font-size:90%;line-height:140%}.f em:before,.f em:after,.f strong:before,.f strong:after{content:"\2005"}.calculator-two-column{display:flex;flex-direction:row;align-items:flex-start;gap:24px;flex-wrap:wrap;margin-top:30px}.calculator-col-img{flex:0 0 220px;width:220px;border-radius:8px;overflow:hidden}.calculator-col-img img{width:100%;height:auto;object-fit:cover;display:block;border-radius:8px}.calculator-col-text{flex:1;min-width:260px}.calculator-col-text h2{margin-top:0;margin-bottom:12px;font-size:2.4rem;color:var(--text-color)}.calculator-col-text p{font-size:1.6rem;line-height:1.5;color:var(--text-color);margin-bottom:15px}@media (max-width:768px){.calculator-two-column{flex-direction:column;align-items:center;text-align:center}.calculator-col-img{width:100%;max-width:240px}}.math-container{font-family:'Times New Roman',Times,serif;font-size:1.2rem;white-space:nowrap;display:flex;align-items:center}.frac{display:inline-flex;flex-direction:column;align-items:center;margin:0 .5rem}.num{border-bottom:1.5px solid var(--text-main);padding:0 .3rem;line-height:1.2}.den{padding:0 .3rem;line-height:1.2}.operator{font-weight:700;color:var(--text-muted);margin:0 .3rem;font-family:'Inter',sans-serif;font-size:1rem}.textcenter{display:inline-table;;align-items:center}.operation{font-weight:600;color:var(--primary);font-size:2rem}.sub-op{font-size:1.5rem;color:var(--text-muted);font-weight:400;margin-top:4px;display:block}.calculatorcontainer{background-color:var(--card-bg);max-width:900px;width:100%}input[name="tab-group"]{display:none}.tab-buttons{display:flex;justify-content:center;gap:1rem;margin-bottom:2rem;border-bottom:1px solid var(--border);padding-bottom:1.5rem}.btn-tab{background-color:#F3F4F6;color:var(--text-muted);border:1px solid var(--border);padding:.75rem 1.5rem;font-size:1.1rem;font-weight:600;border-radius:50px;cursor:pointer;transition:all 0.2s;min-width:120px;text-align:center}.btn-tab:hover{background-color:#E5E7EB;color:var(--text-main)}#tab1:checked~.tab-buttons label[for="tab1"],#tab2:checked~.tab-buttons label[for="tab2"],#tab3:checked~.tab-buttons label[for="tab3"]{background-color:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 6px rgb(79 70 229 / .25)}.tab-content{display:none;animation:fadeIn 0.4s ease-in-out}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}#tab1:checked~.tab-content-wrapper .content-1,#tab2:checked~.tab-content-wrapper .content-2,#tab3:checked~.tab-content-wrapper .content-3{display:block}.empty-state{color:var(--text-muted);background:#F9FAFB}@media (max-width:768px){.tab-buttons{flex-direction:column;align-items:stretch}}