*{box-sizing:border-box;margin:0;padding:0}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:#1a1a1a;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;font-weight:400;line-height:1.5}body{min-width:320px;min-height:100vh;margin:0}#root{width:100%;min-height:100vh}button,input,select{font-family:inherit}.header{z-index:100;background:#fff;border-bottom:1px solid #e5e7eb;position:sticky;top:0;box-shadow:0 1px 3px #0000000d}.header-container{justify-content:space-between;align-items:center;max-width:1400px;height:64px;margin:0 auto;padding:0 1.5rem;display:flex}.header-left{align-items:center;gap:2rem;display:flex}.logo{cursor:pointer;align-items:center;gap:.5rem;text-decoration:none;display:flex}.logo-img{object-fit:contain;width:60px;height:60px;display:block}.nav-menu{align-items:center;gap:1.5rem;display:flex}.nav-link{color:#374151;padding:.5rem 0;font-size:.9375rem;font-weight:500;text-decoration:none;transition:color .2s}.nav-link:hover{color:#10b981}.header-right{align-items:center;gap:1rem;display:flex}.search-container{background:#f9fafb;border:1px solid #e5e7eb;border-radius:8px;align-items:center;min-width:280px;padding:.5rem .75rem;transition:all .2s;display:flex;position:relative}.search-container:focus-within{background:#fff;border-color:#10b981;box-shadow:0 0 0 3px #10b9811a}.search-icon{color:#6b7280;flex-shrink:0;margin-right:.5rem}.search-input{color:#1a1a1a;background:0 0;border:none;outline:none;flex:1;padding:0;font-size:.875rem}.search-input::placeholder{color:#9ca3af}.search-shortcut{color:#9ca3af;background:#fff;border:1px solid #e5e7eb;border-radius:4px;margin-left:.5rem;padding:.125rem .375rem;font-size:.75rem}.login-button{color:#fff;cursor:pointer;white-space:nowrap;background:#10b981;border:none;border-radius:8px;padding:.625rem 1.25rem;font-size:.9375rem;font-weight:600;transition:all .2s}.login-button:hover{background:#059669;transform:translateY(-1px);box-shadow:0 4px 12px #10b9814d}.hamburger-btn{cursor:pointer;z-index:101;background:0 0;border:none;border-radius:8px;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0;transition:background .2s;display:none}.hamburger-btn:hover{background:#f3f4f6}.hamburger-line{background:#374151;border-radius:1px;width:22px;height:2px;transition:transform .2s,opacity .2s;display:block}.nav-overlay{z-index:98;background:#0006;display:none;position:fixed;inset:0}@media (max-width:968px){.header-left{flex:1;justify-content:space-between}.hamburger-btn{display:flex}.nav-menu{z-index:99;background:#fff;flex-direction:column;justify-content:flex-start;align-items:stretch;gap:0;width:280px;max-width:85vw;height:100vh;padding:80px 1.5rem 1.5rem;transition:transform .25s;position:fixed;top:0;right:0;overflow-y:auto;transform:translate(100%);box-shadow:-4px 0 20px #0000001a}.nav-menu-open{transform:translate(0)}.nav-menu .nav-link{border-bottom:1px solid #e5e7eb;padding:1rem 0;font-size:1rem}.nav-overlay{display:block}.search-container{min-width:200px}.search-shortcut{display:none}}@media (max-width:640px){.header-container{padding:0 1rem}.search-container{display:none}.logo-img{height:48px}}.footer{color:gray;margin-top:1rem;padding:3rem 0 2rem}.footer-container{max-width:1400px;margin:0 auto;padding:0 1.5rem}.footer-content{flex-flow:wrap;justify-content:center;align-items:center;gap:0;margin-bottom:0;display:flex}.footer-section{flex-direction:row;align-items:center;gap:0;display:flex}.footer-title{color:#fff;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem;font-size:.875rem;font-weight:600}.footer-title-clickable{cursor:pointer;-webkit-user-select:none;user-select:none;justify-content:space-between;align-items:center;transition:color .2s;display:flex}.footer-title-clickable:hover{color:#10b981}.footer-toggle-icon{margin-left:.5rem;font-size:.75rem;transition:transform .3s;display:inline-block}.footer-toggle-icon.expanded{transform:rotate(180deg)}.footer-links{flex-flow:wrap;justify-content:center;align-items:center;gap:0 1.5rem;margin:0;padding:0;list-style:none;display:flex}.footer-links li{margin:0}.footer-links a{color:#9ca3af;font-size:.875rem;line-height:1.5;text-decoration:none;transition:color .2s}.footer-links a:hover{color:#10b981}.footer-alphabet li:first-child{flex-wrap:wrap;gap:.5rem;display:flex}.footer-alphabet li:first-child a{border-radius:4px;padding:.25rem .5rem;transition:all .2s}.footer-alphabet li:first-child a:hover{color:#10b981;background:#10b9811a}.footer-bottom{border-top:1px solid #374151;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:2rem;padding-top:2rem;display:flex}.footer-address{color:#9ca3af;font-size:.875rem;line-height:1.6}.footer-address p{margin:.25rem 0}.footer-copyright{text-align:right;color:#9ca3af;font-size:.875rem}.footer-copyright p{margin:.25rem 0}.footer-site-name{color:#10b981;font-weight:600;margin-bottom:.5rem!important}.version{color:#6b7280;font-size:.75rem}@media (max-width:768px){.footer{padding:2rem 0 1.5rem}.footer-content{justify-content:center;gap:0}.footer-links{gap:0 1rem}.footer-bottom{flex-direction:column;gap:1.5rem}.footer-copyright{text-align:left}}.sticky-footer{color:#fff;z-index:1000;cursor:pointer;background-color:#000;padding:1rem 1.5rem;transition:background-color .2s;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -2px 8px #0003}.sticky-footer:hover{background-color:#1a1a1a}.sticky-footer-content{justify-content:center;align-items:center;gap:.75rem;max-width:1400px;margin:0 auto;display:flex}.bar-graph-icon{color:#fff;flex-shrink:0}.sticky-footer-text{color:#fff;font-size:1rem;font-weight:500}@media (max-width:768px){.sticky-footer{padding:.875rem 1rem}.sticky-footer-text{font-size:.9375rem}.bar-graph-icon{width:18px;height:18px}}.app{background:#f5f7fa;flex-direction:column;min-height:100vh;padding-bottom:70px;display:flex}.app>.container{box-sizing:border-box;flex:1;width:100%;max-width:1400px;margin:0 auto;padding:2rem 1.5rem}.title{color:#1a1a1a;text-align:center;max-width:1000px;margin-bottom:.5rem;margin-left:auto;margin-right:auto;font-size:2rem;font-weight:650;line-height:1.3}.subtitle{color:#6b7280;text-align:center;max-width:900px;margin-bottom:2rem;margin-left:auto;margin-right:auto;font-size:1rem;line-height:1.6}.home-intro{background:#fff;border-radius:12px;max-width:1100px;margin:0 auto 2rem;padding:2.5rem;box-shadow:0 1px 3px #00000014}.home-intro-large{max-width:1280px;padding:3rem}.home-intro p{text-align:justify;margin-bottom:1rem;font-size:1.0625rem;line-height:1.75}.home-intro p:last-child{margin-bottom:0}.home-intro-heading{color:#1a1a1a;border-bottom:1px solid #e5e7eb;margin-top:1.75rem;margin-bottom:.75rem;padding-bottom:.5rem;font-size:1.25rem;font-weight:600}.home-intro a{color:#10b981;text-decoration:underline}.home-intro a:hover{color:#059669}.options-calculator-section{background:#fff;border-radius:12px;max-width:1100px;margin:0 auto 2rem;padding:2rem;box-shadow:0 1px 3px #00000014}.options-calculator-heading{color:#1a1a1a;margin:0 0 .5rem;font-size:1.5rem;font-weight:600}.options-calculator-desc{color:#6b7280;margin:0 0 1.5rem;font-size:1rem;line-height:1.5}.options-calculator-grid{grid-template-columns:1fr 1fr;align-items:start;gap:1.5rem;display:grid}.options-input-card,.options-output-card{min-width:0}.options-input-card .card-title,.options-output-card .result-title{margin-top:0}.option-calc-buttons{gap:.75rem;margin-top:1rem;display:flex}.option-reset-btn{color:#374151;cursor:pointer;background:#e5e7eb;border:none;border-radius:8px;padding:.5rem 1.25rem;font-size:.9375rem;font-weight:500;transition:background .2s}.option-reset-btn:hover{background:#d1d5db}.option-premium-row .value{font-weight:600}.greeks-title{margin-top:1.25rem;margin-bottom:.5rem}@media (max-width:768px){.options-calculator-grid{grid-template-columns:1fr}.options-calculator-section{padding:1.25rem}}.home-intro-small .page-subheading{font-size:1.25rem}.home-intro-small p{font-size:.9375rem}.home-article{background:#fff;border-radius:12px;max-width:1100px;margin:3rem auto 0;padding:2.5rem;box-shadow:0 1px 3px #00000014}.home-article .page-section{margin-bottom:2rem}.home-article .page-section:last-child{margin-bottom:0}.home-article .page-subheading{border-bottom:1px solid #e5e7eb;margin-top:0;margin-bottom:1rem;padding-bottom:.5rem}.home-article .page-section:not(:first-child) .page-subheading{margin-top:2rem}.home-article p{text-align:justify;font-size:1.0625rem;line-height:1.75}.home-article a{color:#10b981;text-decoration:underline}.home-article a:hover{color:#059669}.know-more-container{justify-content:center;max-width:1100px;margin:2rem auto;display:flex}.know-more-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#10b981 0%,#059669 100%);border:none;border-radius:8px;align-items:center;gap:.5rem;padding:.875rem 2rem;font-size:1rem;font-weight:600;transition:all .3s;display:flex;box-shadow:0 2px 8px #10b9814d}.know-more-btn:hover{background:linear-gradient(135deg,#059669 0%,#047857 100%);transform:translateY(-2px);box-shadow:0 4px 12px #10b98166}.know-more-btn:active{transform:translateY(0)}.know-more-arrow{font-size:.875rem;transition:transform .3s;display:inline-block}.know-more-arrow.expanded{transform:rotate(180deg)}.calculator-grid{grid-template-columns:1fr 1fr;align-items:start;gap:1.5rem;margin-bottom:2rem;display:grid}@media (max-width:1024px){.calculator-grid{grid-template-columns:1fr;gap:1.25rem}.title{font-size:1.75rem}.home-intro-large{max-width:100%;padding:2.5rem 2rem}}@media (max-width:768px){.app>.container{padding:1.5rem 1rem}.title{max-width:100%;padding:0 1rem;font-size:1.625rem}.subtitle{max-width:100%;padding:0 1rem;font-size:.9375rem}.home-intro,.home-article{max-width:100%;padding:2rem 1.5rem}.home-intro-large{padding:2rem 1.5rem}.home-intro p,.home-article p{font-size:1rem}.home-article .page-subheading{font-size:1.375rem}.know-more-container{max-width:100%;margin:1.5rem auto}.know-more-btn{padding:.75rem 1.75rem;font-size:.9375rem}}.input-card{background:#fff;border-radius:10px;height:fit-content;padding:1.25rem;box-shadow:0 1px 3px #00000014}.card-title{color:#1a1a1a;margin-bottom:1rem;font-size:1.0625rem;font-weight:700}.tabs-container{margin-bottom:1rem}.tabs{background:#fff;border-bottom:2px solid #e5e7eb;border-radius:6px 6px 0 0;gap:0;display:flex}.tab{cursor:pointer;color:#6b7280;background:0 0;border:none;border-bottom:3px solid #0000;margin-bottom:-2px;padding:.5rem .75rem;font-size:.8125rem;font-weight:500;transition:all .3s;position:relative}.tab:hover{color:#1a1a1a;background:#f9fafb}.tab.active{color:#10b981;border-bottom-color:#10b981;font-weight:600}.input-group{flex-direction:column;gap:.375rem;margin-bottom:1rem;display:flex}.input-label{color:#374151;font-size:.8125rem;font-weight:500}.input-with-dropdown{align-items:stretch;gap:.5rem;display:flex}.quantity-input,.price-input{color:#1a1a1a;background:#f0fdf4;border:1px solid #86efac;border-radius:6px;flex:1;padding:.5rem .625rem;font-size:.9375rem;transition:all .2s}.quantity-input:focus,.price-input:focus{background:#fff;border-color:#10b981;outline:none;box-shadow:0 0 0 3px #10b9811a}.exchange-select{color:#1a1a1a;cursor:pointer;appearance:none;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23374151' d='M6 9L1 4h10z'/%3E%3C/svg%3E") right .5rem center no-repeat;border:1px solid #d1d5db;border-radius:6px;padding:.5rem 2.25rem .5rem .625rem;font-size:.9375rem;transition:all .2s}.exchange-select:focus{border-color:#10b981;outline:none;box-shadow:0 0 0 3px #10b9811a}.payment-toggle{background:#f9fafb;border-radius:6px;flex-direction:column;gap:.5rem;margin-top:.75rem;padding:.75rem;display:flex}.toggle-label{color:#6b7280;font-size:.8125rem;font-weight:500}.toggle-buttons{background:#fff;border:1px solid #e5e7eb;border-radius:6px;gap:.375rem;padding:.25rem;display:flex}.toggle-btn{cursor:pointer;color:#6b7280;background:0 0;border:none;border-radius:6px;flex:1;padding:.4rem .75rem;font-size:.8125rem;font-weight:500;transition:all .2s}.toggle-btn:hover{background:#f3f4f6}.toggle-btn.active{color:#fff;background:#10b981}.output-section{background:#fff;border-radius:10px;flex-direction:column;gap:1rem;height:fit-content;padding:1.25rem;display:flex;box-shadow:0 1px 3px #00000014}.result-card{background:#f9fafb;border:1px solid #e5e7eb;border-radius:8px;padding:1rem}.result-title{color:#1a1a1a;margin-bottom:.75rem;font-size:1.0625rem;font-weight:700}.result-summary{border-bottom:1px solid #e5e7eb;margin-bottom:1rem;padding-bottom:1rem}.result-row{border-bottom:1px solid #e5e7eb;justify-content:space-between;align-items:center;padding:.5rem 0;display:flex}.result-row:last-child{border-bottom:none}.result-row span:first-child{color:#6b7280;font-size:.8125rem;font-weight:500}.value{color:#1a1a1a;font-size:.9375rem;font-weight:600}.value.large{font-size:1.25rem;font-weight:700}.value.positive{color:#10b981}.value.negative{color:#ef4444}.charges-section{margin-top:1rem}.charges-title{color:#1a1a1a;margin-bottom:.75rem;font-size:1rem;font-weight:600}.charges-card{background:#fff;margin-top:.375rem}.net-pnl{color:#fff;background:linear-gradient(135deg,#10b981 0%,#059669 100%);border:none;margin-top:1rem;padding:1rem 1.25rem}.net-pnl .result-row{border-bottom:none}.net-pnl .result-row span:first-child{color:#fffffff2;font-size:1rem;font-weight:600}.net-pnl .value,.net-pnl .value.positive,.net-pnl .value.negative{color:#fff}.disclaimer{background:#fef3c7;border-left:3px solid #f59e0b;border-radius:6px;margin-top:.75rem;padding:.75rem}.disclaimer p{color:#92400e;margin:.2rem 0;font-size:.6875rem;line-height:1.45}.disclaimer p:first-child{margin-top:0}.disclaimer p:last-child{margin-bottom:0}@media (max-width:640px){.app{padding-bottom:60px}.app>.container{padding:1rem .75rem}.title{margin-bottom:.5rem;padding:0 .5rem;font-size:1.5rem;line-height:1.2}.subtitle{margin-bottom:1.5rem;padding:0 .5rem;font-size:.875rem}.home-intro,.home-article{margin-bottom:1.5rem;padding:1.5rem 1rem}.home-intro-large{padding:1.5rem 1rem}.home-intro p,.home-article p{text-align:left;font-size:.9375rem;line-height:1.6}.home-article .page-subheading{font-size:1.25rem}.home-intro-small .page-subheading{font-size:1.125rem}.know-more-container{margin:1.5rem auto;padding:0 1rem}.know-more-btn{padding:.75rem 1.5rem;font-size:.875rem}.home-intro-small p{font-size:.875rem}.calculator-grid{gap:1rem;margin-bottom:1.5rem}.input-card{padding:1rem}.card-title{font-size:1rem}.tabs{flex-wrap:wrap}.tab{padding:.5rem .625rem;font-size:.75rem}.input-label{font-size:.75rem}.quantity-input,.price-input,.exchange-select{padding:.5rem;font-size:.875rem}.output-section{padding:1rem}.result-card{padding:.75rem}.result-title{font-size:1rem}.result-row span:first-child{font-size:.75rem}.value{font-size:.875rem}.value.large{font-size:1.125rem}.net-pnl{padding:.875rem 1rem}.net-pnl .result-row span:first-child{font-size:.9375rem}.disclaimer{padding:.625rem}.disclaimer p{font-size:.625rem}}@media (max-width:480px){.app>.container{padding:.75rem .5rem}.title{padding:0 .25rem;font-size:1.375rem}.subtitle{padding:0 .25rem;font-size:.8125rem}.home-intro,.home-article,.home-intro-large{padding:1.25rem .875rem}.input-card,.output-section{padding:.875rem}.tab{padding:.4rem .5rem;font-size:.6875rem}}.page-container{background:#f9fafb;min-height:calc(100vh - 64px);padding:2rem 0 5rem}.page-content{background:#fff;border-radius:12px;max-width:900px;margin:0 auto;padding:3rem;box-shadow:0 1px 3px #0000001a}.page-title{color:#1a1a1a;border-bottom:2px solid #10b981;margin-bottom:2rem;padding-bottom:1rem;font-size:2.5rem;font-weight:700}.page-hero-image{border-radius:8px;margin:0 0 2rem;overflow:hidden}.page-hero-image img{vertical-align:middle;width:100%;max-width:100%;height:auto;display:block}.page-hero-caption{color:#374151;text-align:center;margin:.75rem 0 0;padding:0;font-size:.9375rem;font-weight:600;line-height:1.4}.page-section{margin-bottom:1.5rem}.page-section p{color:#374151;margin:0 0 1rem;font-size:1.0625rem;line-height:1.8}.page-section p:last-child{margin-bottom:0}.page-subheading{color:#1a1a1a;margin-top:2rem;margin-bottom:1rem;font-size:1.5rem;font-weight:600;line-height:1.4}.page-subheading:first-of-type{margin-top:0}.faq-item{background:#f9fafb;border-left:3px solid #10b981;border-radius:4px;margin-bottom:1.5rem;padding:1rem}.faq-question{color:#1a1a1a;margin-bottom:.5rem;font-size:1.125rem;font-weight:600}.faq-item p{margin:0;font-size:1rem}.page-content a{color:#10b981;text-decoration:underline;transition:color .2s}.page-content a:hover{color:#059669}.page-subtitle{color:#6b7280;margin-bottom:2.5rem;font-size:1.125rem;line-height:1.6}.blog-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem;margin-top:2rem;display:grid}.blog-card{background:#f9fafb;border:1px solid #e5e7eb;border-radius:8px;transition:all .2s;overflow:hidden}.blog-card:hover{border-color:#10b981;transform:translateY(-2px);box-shadow:0 4px 12px #10b9811a}.blog-card-link{color:inherit;padding:0;text-decoration:none;display:block}.blog-card-image-wrap{background:#e5e7eb;border-radius:8px 8px 0 0;width:100%;height:180px;overflow:hidden}.blog-card-image{object-fit:cover;width:100%;height:100%;display:block}.blog-card-title{color:#1a1a1a;margin-bottom:.75rem;padding:1.25rem 1.5rem 0;font-size:1.25rem;font-weight:600;line-height:1.4}.blog-card-description{color:#6b7280;margin-bottom:1rem;padding:0 1.5rem;font-size:.9375rem;line-height:1.6}.blog-card-read-more{color:#10b981;padding:0 1.5rem 1.5rem;font-size:.875rem;font-weight:500;transition:transform .2s;display:inline-block}.blog-card:hover .blog-card-read-more{transform:translate(4px)}@media (max-width:768px){.page-content{margin:0 1rem;padding:2rem 1.5rem}.page-title{font-size:2rem}.page-section p{font-size:1rem}.blog-grid{grid-template-columns:1fr;gap:1rem}.blog-card-link{padding:1.25rem}}