/* Options Lab — a self-contained stylesheet, without external fonts or assets. */
:root{--page:#f5f6f8;--surface:#fff;--ink:#212630;--muted:#7e8794;--subtle:#a1a8b2;--line:#e9ecf0;--line-strong:#dce1e7;--orange:#f77923;--orange-dark:#d86412;--orange-light:#fff3e9;--red:#df5661;--red-soft:#fff0f1;--green:#239878;--green-soft:#edf9f4;--blue:#648bcc;--radius:14px;--shadow:0 2px 6px rgba(27,37,53,.022);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-synthesis:none;color:var(--ink);font-size:14px;font-weight:400;line-height:1.55}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:22px}body{margin:0;background:var(--page);-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit}button,select{cursor:pointer}button,a,input,select,summary,textarea{-webkit-tap-highlight-color:transparent}button{color:inherit}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #ffd0aa;outline-offset:3px}a{color:inherit;text-decoration:none}svg{display:block}p,h1,h2,h3{margin:0}button{border:0;background:transparent}input,select,textarea{width:100%;min-width:0;border:1px solid var(--line-strong);border-radius:7px;background:#fff;color:var(--ink);font-variant-numeric:tabular-nums;transition:border-color .15s,box-shadow .15s}input,select{height:36px;padding:0 10px}input[type=datetime-local]{padding-right:7px;font-size:12px}input[type=number]{-moz-appearance:textfield}input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}input::placeholder,textarea::placeholder{color:#aeb5be;font-size:12px}input:focus,select:focus,textarea:focus{border-color:#f8ae7a;outline:none;box-shadow:0 0 0 3px rgba(247,121,35,.1)}select{padding-right:27px;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='m3 4 3 3 3-3' fill='none' stroke='%237e8794' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center}textarea{padding:8px 10px;resize:vertical;font-size:12px;line-height:1.6}input:disabled,select:disabled{background-color:#f4f5f7;color:#9aa2ac}input[readonly]{background:#f9fafb}label{cursor:default}strong{font-weight:650}[hidden],.hidden,.is-hidden{display:none!important}.muted,.text-muted{color:var(--muted)}.positive,.up,.text-red,.pnl-positive{color:var(--red)!important}.negative,.down,.text-green,.pnl-negative{color:var(--green)!important}.text-orange{color:var(--orange)}.mono{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.nowrap{white-space:nowrap}.skip-link{position:fixed;top:-100px;left:20px;padding:12px 20px;background:var(--ink);color:#fff;border-radius:5px;z-index:100}.skip-link:focus{top:12px}
.site-header{height:76px;background:#fff;border-bottom:1px solid var(--line)}.header-inner{max-width:1480px;height:100%;margin:auto;padding:0 36px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px}.brand-mark{width:37px;height:37px;border-radius:10px;background:var(--orange);color:white;display:grid;place-items:center;box-shadow:0 3px 8px #f7792326}.brand-mark svg{width:27px;height:27px}.brand-text{display:flex;flex-direction:column;line-height:1.2;gap:4px}.brand-text strong{font-size:18px;letter-spacing:1px}.brand-text>span{font-size:9px;font-weight:650;letter-spacing:2.8px;color:#979da6}.header-nav{display:flex;align-items:center;gap:29px;height:100%;font-size:12px;color:var(--muted)}.header-nav>a{height:100%;display:flex;align-items:center;position:relative}.header-nav>a:hover{color:var(--orange)}.header-nav .nav-active{font-weight:600;color:var(--ink)}.nav-active:after{content:"";position:absolute;bottom:0;height:3px;background:var(--orange);border-radius:3px 3px 0 0;left:7px;right:7px}.header-divider{height:17px;width:1px;background:var(--line)}.back-link{gap:6px}.back-link svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.page-shell{max-width:1480px;padding:29px 36px 0;margin:auto}.page-intro{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;gap:24px}.eyebrow{display:flex;align-items:center;gap:6px;color:#969ca5;font-size:10px;letter-spacing:1.5px;margin-bottom:7px}.eyebrow span{width:5px;height:5px;border-radius:50%;background:var(--orange)}h1{font-size:29px;line-height:1.35;font-weight:650;letter-spacing:-.8px}.page-intro p{font-size:12px;color:var(--muted);margin-top:8px}.data-status{display:flex;align-items:flex-start;gap:8px;font-size:12px;color:#69737f;padding:10px 13px;border:1px solid var(--line);background:#fcfcfd;border-radius:8px;line-height:1.4}.data-status small{display:block;color:#a1a7af;font-size:10px;margin-top:4px}.status-dot{height:6px;width:6px;display:block;border-radius:50%;background:var(--orange);margin-top:5px}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);min-width:0}.market-bar{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:7px 20px 7px 8px}.product-tabs{display:flex;align-items:center;gap:5px}.product-tabs button{padding:11px 21px;min-width:122px;border:1px solid transparent;border-radius:9px;display:flex;gap:5px;align-items:center;flex-direction:column;transition:background .15s,color .15s}.product-tabs button:hover{background:#f7f8fa}.product-tabs button.active,.product-tabs button[aria-selected=true]{background:var(--orange-light);border-color:#ffead8;color:var(--orange-dark)}.product-symbol{font-size:14px;font-weight:650;line-height:1.25}.product-name{font-size:11px;color:var(--muted);font-weight:400}.product-tabs button.active .product-name,.product-tabs button[aria-selected=true] .product-name{color:#c98352}.preset-control{display:flex;align-items:center;gap:12px;min-width:290px}.preset-control label{font-size:11px;color:var(--muted);white-space:nowrap}.preset-control select{width:205px;background-color:#fafbfc;border-color:var(--line);font-size:12px}.top-quote{display:flex;align-items:center;gap:13px;flex-wrap:wrap;padding:16px 3px;font-size:12px;color:var(--muted);min-height:55px}.top-quote strong{font-size:14px;color:var(--ink)}.quote-caption,.data-badge{font-size:10px;line-height:1.7;white-space:nowrap;padding:0 6px;background:#e9edf2;border-radius:3px;color:#788594}.top-quote .quote-price{font-size:21px;font-weight:650;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1}.top-quote .quote-name{font-size:13px;font-weight:600;color:var(--ink)}.top-quote .quote-meta{font-size:11px;color:var(--muted)}.status-message{margin:0 0 15px;border:1px solid #ffddbf;border-radius:8px;padding:10px 13px;background:#fff8f0;font-size:12px;color:#a76532;white-space:pre-wrap}.status-message:empty{display:none}.status-message.error{border-color:#f0c6ca}.status-message.success{border-color:#b9e1cf}.workspace{display:grid;grid-template-columns:390px minmax(0,1fr);gap:22px;align-items:start;scroll-margin-top:20px}.input-column,.analysis-column{display:flex;flex-direction:column;gap:19px;min-width:0}.panel-heading{min-height:61px;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line)}h2{font-size:15px;font-weight:650;line-height:1.35}.heading-group{display:flex;align-items:center;gap:8px}.section-icon{color:#8b94a0;flex-shrink:0}.section-icon svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.35;stroke-linecap:round;stroke-linejoin:round}.micro-label{color:#9ba2ac;font-size:10px;line-height:1.5;text-align:right}.panel-body{padding:18px 20px}.form-grid,.leg-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px 13px}.field{display:flex;flex-direction:column;gap:6px;min-width:0}.field.full,.form-grid>.full,.leg-grid>.full{grid-column:1/-1}.field>label{display:flex;align-items:center;gap:5px;font-size:11px;color:#79828f;line-height:1.4;min-height:16px}.label-note{margin-left:auto;font-size:9px;color:#a7aeb7}.label-unit{font-size:10px;color:#a3aab4}.bid-dot,.ask-dot{height:4px;width:4px;border-radius:50%;background:var(--red);display:inline-block}.ask-dot{background:var(--green)}.input-affix{position:relative}.input-affix input{padding-right:31px}.input-affix>span{position:absolute;right:11px;top:50%;transform:translateY(-50%);font-size:11px;color:#98a0aa;pointer-events:none}.field-note{font-size:10px;line-height:1.75;color:#969eaa;margin-top:12px}.advanced-settings{margin-top:15px;border-top:1px solid var(--line);padding-top:13px}.advanced-settings summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:10px;color:#778391;font-size:11px}.advanced-settings summary::-webkit-details-marker,.methodology-panel summary::-webkit-details-marker{display:none}.advanced-settings summary>span{display:flex;gap:6px;align-items:center}.advanced-settings summary svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.2;stroke-linecap:round;stroke-linejoin:round}.chevron{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s}.advanced-settings[open] .chevron,.methodology-panel[open] .chevron{transform:rotate(180deg)}.advanced-grid{margin-top:17px;padding-top:2px}.advanced-grid input,.advanced-grid select{font-size:12px}
.legs-list{display:flex;flex-direction:column;gap:12px}.leg-card{border:1px solid var(--line);background:#fdfdfe;border-radius:9px;overflow:hidden;padding:12px}.leg-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:11px;min-height:24px}.leg-title{font-size:12px;font-weight:650;display:flex;align-items:center;gap:7px}.leg-card .leg-title input{width:120px;height:27px;font-size:11px}.leg-badge{display:inline-flex;align-items:center;justify-content:center;min-width:22px;padding:2px 5px;border-radius:4px;background:#f0f2f5;color:#788391;font-size:10px;font-weight:600;white-space:nowrap}.leg-badge.call,.leg-badge.buy,.badge-buy,.tag-buy{background:var(--red-soft);color:var(--red)}.leg-badge.put,.leg-badge.sell,.badge-sell,.tag-sell{background:var(--green-soft);color:var(--green)}.leg-badge.linear{background:#eef3fb;color:#6588bd}.leg-card .leg-grid{gap:10px}.leg-card .field>label{font-size:10px;gap:4px}.leg-card input,.leg-card select{height:32px;font-size:12px;background-color:#fff}.leg-card input[type=datetime-local]{font-size:10px;padding-left:6px;padding-right:4px}.leg-note{font-size:10px;color:var(--muted);line-height:1.65;margin-top:9px;overflow-wrap:anywhere}.icon-button{width:24px;height:24px;border-radius:5px;display:inline-flex;align-items:center;justify-content:center;color:#9ba4af;font-size:17px;line-height:1;flex-shrink:0}.icon-button:hover{background:#ffeeee;color:var(--red)}.icon-button svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.4}.leg-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.leg-meta{color:var(--muted);font-size:10px}.add-leg-buttons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin-top:13px}.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 12px;border-radius:7px;border:1px solid transparent;font-size:11px;font-weight:500;line-height:1.5;white-space:nowrap;transition:background .15s,border-color .15s,box-shadow .15s;min-height:34px}.button svg{height:14px;width:14px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}.button-primary{background:var(--orange);color:#fff;border-color:var(--orange)}.button-primary:hover{background:#ec6d17;border-color:#ec6d17;box-shadow:0 3px 8px #f7792320}.button-default{background:#fff;border-color:var(--line-strong);color:#6c7887}.button-default:hover{border-color:#bfc7d1;background:#fafbfc}.button-soft{padding:7px 4px;background:#f7f8fa;border-color:#e8ecf0;color:#6f7c8c;font-size:10px;gap:3px}.button-soft>span{font-size:14px;font-weight:400}.button-soft:hover{border-color:#ffd5b8;background:var(--orange-light);color:var(--orange-dark)}.button-text{color:#8a94a2;padding-left:5px;padding-right:5px}.button-text:hover{color:var(--orange-dark)}.strategy-fee{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:17px;padding-top:15px;border-top:1px solid var(--line)}.strategy-fee label{font-size:11px;color:#74808d}.strategy-fee label span{display:block;font-size:9px;color:#9ca5b0;margin-top:3px}.strategy-fee input{width:104px;height:32px;text-align:right;font-size:12px}.strategy-toolbar{display:flex;gap:7px;margin-top:16px}.strategy-toolbar .button-primary{flex:1}.storage-note{display:flex;align-items:center;gap:4px;justify-content:center;color:#a1a9b2;font-size:9px;margin-top:11px}.storage-note svg{width:11px;height:11px;fill:none;stroke:currentColor;stroke-width:1.2}.empty-state{padding:30px 15px;text-align:center;color:#a1a9b3;font-size:12px}
.overview-panel .panel-heading{border-bottom:0;padding-bottom:7px;min-height:55px}.metrics-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));padding:3px 19px 15px;gap:0}.metric-card{display:flex;flex-direction:column;gap:5px;min-width:0;padding:12px 15px;position:relative;border-left:1px solid var(--line)}.metric-card:nth-child(3n+1){border-left:0;padding-left:1px}.metric-card:nth-child(n+4){border-top:1px solid var(--line);padding-top:17px;margin-top:5px}.metric-label{font-size:11px;color:#8e97a3;display:flex;align-items:center;gap:5px}.metric-value{font-size:23px;font-weight:550;letter-spacing:-.5px;line-height:1.3;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.metric-value.small{font-size:18px}.metric-hint{font-size:9px;color:#a1a9b3;line-height:1.5}.metric-card.primary .metric-value{color:var(--orange-dark)}.chart-panel{overflow:hidden}.chart-heading{min-height:70px;padding-top:15px;padding-bottom:15px}.tiny-tag{font-size:9px;color:#99a2ae;background:#f5f6f8;border-radius:3px;padding:2px 5px;font-weight:400;white-space:nowrap}.view-tabs{display:flex;align-items:center;background:#f5f6f8;padding:3px;border-radius:7px;gap:3px}.view-tabs button{font-size:11px;line-height:1.3;color:#8a93a0;padding:7px 11px;border-radius:5px;white-space:nowrap;transition:background .15s,color .15s}.view-tabs button:hover{color:#5c6877}.view-tabs button.active,.view-tabs button[aria-selected=true]{color:var(--orange-dark);background:white;box-shadow:0 1px 4px rgba(32,44,58,.07);font-weight:600}.scenario-controls{padding:18px 20px 0;display:grid;grid-template-columns:minmax(190px,1.35fr) 1fr 1fr;gap:14px}.scenario-controls select,.scenario-controls input{font-size:11px;height:33px}.scenario-controls .field>label{font-size:10px}.scenario-controls #curveMetricField{grid-column:auto}.scenario-controls:has(#curveMetricField:not([hidden])){grid-template-columns:minmax(170px,1.4fr) 1fr 1fr 1fr}.volatility-control{padding:17px 20px 0;display:flex;align-items:center;gap:10px;min-height:54px}.volatility-control>label{font-size:10px;color:#7b8795;white-space:nowrap;display:flex;align-items:center;gap:8px}.volatility-control>label>span{font-size:9px;color:#a5adb7}.range-end{font-size:9px;color:#a4acb6;font-variant-numeric:tabular-nums}input[type=range]{appearance:none;flex:1;min-width:40px;height:4px;padding:0;border:0;border-radius:6px;background:linear-gradient(to right,#ffe4cc,#ffd0a8 50%,#e9edf2 50%,#e9edf2);box-shadow:none;accent-color:var(--orange)}input[type=range]::-webkit-slider-thumb{appearance:none;width:13px;height:13px;background:var(--orange);border:3px solid white;border-radius:50%;box-shadow:0 0 0 1px #ffc597,0 1px 5px #f7792340;cursor:ew-resize}input[type=range]::-moz-range-thumb{width:8px;height:8px;background:var(--orange);border:3px solid white;border-radius:50%;box-shadow:0 0 0 1px #ffc597;cursor:ew-resize}.volatility-number{width:64px;flex-shrink:0}.volatility-number input{font-size:11px;height:29px;padding-left:9px;padding-right:25px}.volatility-number>span{font-size:9px;right:8px}.horizon-note{margin:12px 20px 2px;font-size:10px;color:#929da9;line-height:1.7;min-height:17px}.horizon-note.warning{padding:8px 10px;border-radius:5px}.chart-wrap{padding:7px 9px 0;position:relative;min-width:0}.chart-wrap>svg{width:100%;height:auto;overflow:visible;touch-action:pan-y}.chart-wrap text{font-variant-numeric:tabular-nums}.chart-tooltip{position:absolute;z-index:5;background:#fff;border:1px solid var(--line-strong);box-shadow:0 4px 22px rgba(20,33,49,.1);border-radius:8px;padding:10px 13px;font-size:11px;pointer-events:none;line-height:1.8;max-width:250px;font-variant-numeric:tabular-nums}.chart-tooltip strong{color:var(--ink)}.chart-tooltip .tooltip-row{display:flex;justify-content:space-between;gap:20px}.chart-legend{display:flex;align-items:center;justify-content:center;gap:22px;padding:4px 16px 19px;flex-wrap:wrap;font-size:10px;color:#8993a0}.legend-item{display:inline-flex;align-items:center;gap:7px}.legend-line{display:inline-block;width:19px;height:0;border-top:2px solid #7a91ab}.legend-line.orange{border-color:var(--orange)}.legend-line.red{border-color:var(--red)}.legend-line.green{border-color:var(--green)}.legend-line.dashed{border-top-style:dashed}.legend-dot{height:5px;width:5px;border-radius:50%;background:#708aaa;display:inline-block}.scenario-inspector{display:flex;align-items:center;gap:20px;background:#fbfcfd;border-top:1px solid var(--line);padding:16px 20px}.scenario-inspector>.field{width:160px;flex-shrink:0}.scenario-inspector>.field label{font-size:10px}.scenario-inspector input{height:32px;font-size:12px}.scenario-summary{flex:1;display:flex;align-items:center;flex-wrap:wrap;gap:12px 26px;min-width:0;font-size:11px;color:#83909f}.scenario-summary strong{display:block;font-size:18px;font-weight:550;line-height:1.5;font-variant-numeric:tabular-nums}.scenario-summary .summary-item{display:flex;flex-direction:column;gap:2px}.scenario-summary .summary-label{font-size:10px;color:#8a95a2}.scenario-summary .summary-value{font-size:18px;color:var(--ink);font-variant-numeric:tabular-nums}.analysis-footnote{display:flex;align-items:flex-start;gap:7px;padding:0 3px;margin-top:-6px}.analysis-footnote svg{flex-shrink:0;width:13px;height:13px;fill:none;stroke:#a4afbb;stroke-width:1.2;margin-top:2px}.analysis-footnote p{font-size:10px;line-height:1.8;color:#9aa5b1}
.detail-panel{margin-top:22px;overflow:hidden}.detail-panel .panel-heading{padding-top:18px;padding-bottom:17px}.section-description{font-size:10px;color:#98a2ae;margin-top:5px}.quote-actions{display:flex;align-items:center;gap:13px}.table-scroll{overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin;scrollbar-color:#dce2e9 transparent}table{width:100%;border-collapse:collapse;border-spacing:0;font-size:11px;text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}th{font-weight:500;color:#8e99a6;background:#fafbfc;font-size:10px;height:43px;padding:10px 15px;border-bottom:1px solid var(--line)}td{padding:13px 15px;border-bottom:1px solid #f0f2f5;color:#536171;font-size:11px;line-height:1.5}th:first-child,td:first-child{text-align:left;padding-left:21px}th:last-child,td:last-child{padding-right:21px}tbody tr:last-child td{border-bottom:0}tbody tr:hover{background:#fffcf8}tbody tr.current,tbody tr.highlight,tbody tr.reference{background:#fff8f0}td strong{font-weight:550;color:var(--ink)}td small{display:block;font-size:9px;color:#a2acb7}td .badge,td .leg-badge{font-size:9px}tfoot td{font-weight:600;border-top:1px solid var(--line);background:#fafbfc}.table-note{font-size:10px;color:var(--muted);padding:12px 20px;border-top:1px solid var(--line)}.table-scroll .error,.table-scroll .warning{white-space:normal;max-width:220px;line-height:1.6}.methodology-panel{margin-top:22px;overflow:hidden}.methodology-panel>summary{list-style:none;display:flex;align-items:center;justify-content:space-between;padding:19px 21px;cursor:pointer;gap:20px;font-size:12px;font-weight:550}.method-summary-note{font-size:10px;font-weight:400;color:#a1aab5;display:flex;align-items:center;gap:16px}.methodology-content{border-top:1px solid var(--line);padding:22px 24px;color:#748191;font-size:12px;line-height:1.9}.methodology-content h3{font-size:13px;color:#495768;margin:16px 0 7px;font-weight:600}.methodology-content h3:first-child{margin-top:0}.methodology-content h4{color:#5d6b7c;font-size:12px;margin:15px 0 4px}.methodology-content p{margin:0 0 9px}.methodology-content strong{color:#566477;font-weight:600}.methodology-content ul,.methodology-content ol{padding-left:20px;margin:8px 0 15px}.methodology-content li{margin:4px 0}.methodology-content a{color:#c47c44;text-decoration:underline;text-decoration-color:#edceb5;text-underline-offset:3px}.methodology-content a:hover{color:var(--orange)}.methodology-content code{font-size:11px;padding:2px 5px;background:#f5f6f8;border-radius:3px}.methodology-content table{white-space:normal;margin:12px 0}.page-footer{display:flex;align-items:center;justify-content:space-between;gap:20px;color:#b0b7c0;font-size:9px;padding:28px 2px 32px}.page-footer>div{display:flex;align-items:center;gap:13px}.footer-brand{font-size:9px;letter-spacing:1.4px;color:#98a3af;font-weight:650}.page-footer p{font-size:9px;line-height:1.7}.message{padding:8px 10px;border-radius:6px;background:#f3f6fa;color:#73849a;font-size:11px;line-height:1.6}.warning{color:#b48239!important;background:#fff7e9}.error{color:#c55963!important;background:#fff1f2}.success{color:#368c71!important;background:#edf9f4}.field-error{border-color:#e98c94!important}.noscript-message{position:fixed;bottom:15px;left:15px;right:15px;background:#fff4dc;color:#8b602c;padding:15px;border:1px solid #ecd09d;border-radius:8px;z-index:20}
.quote-summary{display:flex;flex-wrap:wrap;align-items:center;gap:9px 17px;padding:12px 0 1px;font-size:10px;color:#8e98a5;line-height:1.65}.quote-summary:empty{display:none}.quote-summary strong{color:#556476;font-size:12px;font-weight:600;font-variant-numeric:tabular-nums}.quote-summary .summary-row{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-basis:100%}.quote-summary .bid-ask{display:grid;grid-template-columns:1fr 1fr;width:100%;gap:0;border-radius:5px;overflow:hidden}.quote-summary .bid-ask>div{padding:7px 10px;background:var(--red-soft);color:var(--red)}.quote-summary .bid-ask>div+div{background:var(--green-soft);color:var(--green)}
@media(min-width:1480px){.chart-wrap{padding-top:14px}.chart-legend{padding-bottom:23px}.metrics-grid{padding-bottom:18px}.metric-card{padding-top:15px;padding-bottom:15px}}
@media(max-width:1199px){.header-inner{padding:0 24px}.page-shell{padding:26px 24px 0}.workspace{grid-template-columns:348px minmax(0,1fr);gap:18px}.product-tabs button{min-width:106px;padding-left:14px;padding-right:14px}.market-bar{gap:20px}.preset-control{min-width:260px;gap:8px}.preset-control select{width:178px}.panel-heading{padding:16px}.panel-body{padding:16px}.scenario-controls{padding:16px 16px 0;gap:9px;grid-template-columns:minmax(176px,1.2fr) 1fr}.scenario-controls>.field:nth-child(3){grid-column:1/-1}.scenario-controls:has(#curveMetricField:not([hidden])){grid-template-columns:minmax(176px,1.2fr) 1fr}.scenario-controls:has(#curveMetricField:not([hidden]))>.field:nth-child(3){grid-column:auto}.volatility-control{padding-left:16px;padding-right:16px;gap:7px}.volatility-control>label{gap:4px;font-size:9px}.volatility-control>label>span{display:none}.horizon-note{margin-left:16px;margin-right:16px}.view-tabs button{font-size:10px;padding:7px 8px}.chart-heading{gap:8px}.chart-heading .tiny-tag{display:none}.metrics-grid{padding:4px 15px 13px}.metric-value{font-size:20px}.metric-card{padding:10px 11px}.metric-hint{font-size:9px}.scenario-inspector{padding:14px 16px;gap:15px}.scenario-inspector>.field{width:133px}.scenario-summary{gap:10px 17px}.scenario-summary strong,.scenario-summary .summary-value{font-size:16px}.top-quote{font-size:11px;gap:10px}}
@media(max-width:959px){.page-shell{padding-left:20px;padding-right:20px}.header-inner{padding:0 20px}.workspace{grid-template-columns:320px minmax(0,1fr);gap:16px}.panel-heading,.panel-body{padding-left:14px;padding-right:14px}.form-grid{gap:11px 10px}.market-bar{padding:7px 12px 7px 7px;gap:12px}.product-tabs{gap:3px}.product-tabs button{min-width:88px;padding-left:11px;padding-right:11px}.product-symbol{font-size:12px}.product-name{font-size:10px}.preset-control{min-width:0;display:block}.preset-control label{display:block;font-size:9px;margin-bottom:4px}.preset-control select{width:184px;height:32px;font-size:11px}.metrics-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.metric-card:nth-child(3n+1){border-left:1px solid var(--line);padding-left:11px}.metric-card:nth-child(2n+1){border-left:0;padding-left:1px}.metric-card:nth-child(n+3){border-top:1px solid var(--line);padding-top:13px;margin-top:4px}.metric-card:nth-child(n+4){padding-top:13px;margin-top:4px}.chart-heading{align-items:flex-start;flex-direction:column;gap:12px}.view-tabs{width:100%}.view-tabs button{flex:1}.scenario-controls{grid-template-columns:1fr 1fr;padding-left:14px;padding-right:14px}.scenario-controls .scenario-date{grid-column:1/-1}.scenario-controls>.field:nth-child(3){grid-column:auto}.scenario-controls:has(#curveMetricField:not([hidden])){grid-template-columns:1fr 1fr}.volatility-control{flex-wrap:wrap;padding-top:14px;padding-left:14px;padding-right:14px}.volatility-control>label{width:100%;font-size:10px}.volatility-control>label>span{display:block}.horizon-note{margin-left:14px;margin-right:14px;font-size:9px}.scenario-inspector{align-items:flex-start;flex-direction:column;gap:12px}.scenario-inspector>.field{width:100%;flex-direction:row;align-items:center;justify-content:space-between}.scenario-inspector>.field input{width:132px}.scenario-summary{width:100%;padding-top:9px;border-top:1px solid var(--line);gap:10px 20px}.chart-legend{gap:12px;font-size:9px;padding-bottom:15px}.legend-line{width:13px}.chart-wrap{padding-left:0;padding-right:3px}.micro-label{font-size:9px}.add-leg-buttons{gap:5px}.button-soft{font-size:9px}.strategy-toolbar{gap:5px}.strategy-toolbar .button{font-size:10px;padding-left:9px;padding-right:9px}.page-footer{flex-direction:column;gap:9px;text-align:center}.detail-panel .panel-heading{padding-left:17px;padding-right:17px}}
@media(max-width:759px){.site-header{height:66px}.header-inner{padding:0 18px}.brand-mark{width:32px;height:32px;border-radius:9px}.brand-mark svg{width:23px;height:23px}.brand-text strong{font-size:15px;letter-spacing:.5px}.brand-text>span{font-size:8px;letter-spacing:2.3px}.header-nav{gap:17px;font-size:11px}.header-nav>.nav-active,.header-divider{display:none}.page-shell{padding:21px 16px 0}.page-intro{margin-bottom:19px;gap:15px;align-items:flex-start}.eyebrow{font-size:9px;margin-bottom:6px}h1{font-size:25px}.page-intro p{font-size:10px;line-height:1.8;max-width:245px;margin-top:7px}.data-status{font-size:9px;padding:7px 8px;gap:5px;flex-shrink:0;margin-top:19px;max-width:118px}.data-status small{font-size:8px}.status-dot{height:4px;width:4px;margin-top:4px}.market-bar{flex-direction:column;align-items:stretch;padding:6px 7px 12px;gap:12px}.product-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px}.product-tabs button{min-width:0;padding:10px 5px;gap:4px}.product-symbol{font-size:12px}.preset-control{display:flex;justify-content:space-between;align-items:center;padding:0 6px;gap:10px}.preset-control label{font-size:10px;margin-bottom:0}.preset-control select{width:auto;flex:1;max-width:240px;font-size:11px}.top-quote{padding:13px 2px;font-size:10px;gap:6px 10px}.top-quote .quote-price{font-size:19px}.workspace{grid-template-columns:minmax(0,1fr);gap:18px}.input-column{gap:16px}.analysis-column{gap:16px}.panel-heading{padding:16px 18px;min-height:57px}.panel-body{padding:17px 18px}.settings-panel .form-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px 14px}.settings-panel .form-grid>.full{grid-column:1/-1}.settings-panel input[type=datetime-local]{font-size:13px}input,select{height:38px}.field>label{font-size:11px}.settings-panel .form-grid>.field:first-child input{max-width:100%}.field-note{font-size:10px}.label-note{font-size:9px}.leg-card{padding:13px;background:#fcfcfd}.leg-card .leg-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:11px 10px}.leg-card .leg-grid>.full{grid-column:1/-1}.leg-card .field>label{font-size:10px}.leg-card input[type=datetime-local]{font-size:11px}.leg-card input,.leg-card select{height:35px}.leg-card .field:has(input[type=datetime-local]){grid-column:span 2}.leg-title{font-size:13px}.add-leg-buttons{gap:8px}.button-soft{font-size:11px;padding:9px 5px}.strategy-toolbar .button{font-size:11px;padding:9px 12px}.strategy-toolbar{gap:8px}.strategy-fee input{width:115px;height:35px}.strategy-fee label{font-size:12px}.strategy-fee label span{font-size:10px}.storage-note{font-size:9px}.metrics-grid{grid-template-columns:repeat(3,minmax(0,1fr));padding:4px 18px 16px}.metric-card{padding:12px 12px}.metric-card:nth-child(2n+1){border-left:1px solid var(--line);padding-left:12px}.metric-card:nth-child(3n+1){border-left:0;padding-left:0}.metric-card:nth-child(3){border-top:0;margin-top:0;padding-top:12px}.metric-card:nth-child(n+4){border-top:1px solid var(--line);padding-top:15px;margin-top:5px}.metric-value{font-size:22px}.metric-label{font-size:10px}.metric-hint{font-size:9px}.chart-heading{flex-direction:row;align-items:center;gap:12px}.view-tabs{width:auto}.view-tabs button{font-size:10px;padding:7px 9px}.scenario-controls{padding:16px 18px 0;grid-template-columns:1fr 1fr;gap:12px}.scenario-controls .scenario-date{grid-column:1/-1}.scenario-controls .scenario-date input{font-size:12px}.volatility-control{padding:16px 18px 0;flex-wrap:nowrap;gap:9px}.volatility-control>label{width:auto;font-size:10px}.volatility-control>label>span{display:none}.horizon-note{margin:12px 18px 2px;font-size:10px}.chart-wrap{padding:10px 0 0}.chart-legend{padding-top:5px;padding-bottom:18px;font-size:10px;gap:18px}.scenario-inspector{padding:16px 18px;flex-direction:row;align-items:center;gap:17px}.scenario-inspector>.field{width:132px;flex-direction:column;align-items:stretch}.scenario-inspector>.field input{width:100%}.scenario-summary{width:auto;gap:9px 18px;border:0;padding:0}.scenario-summary strong,.scenario-summary .summary-value{font-size:17px}.analysis-footnote{margin-top:-3px}.analysis-footnote p{font-size:10px}.detail-panel{margin-top:18px}.detail-panel .panel-heading{padding:17px 18px;align-items:flex-start}.section-description{font-size:9px}.quote-actions{gap:6px}.quote-actions .button{font-size:10px;padding:7px}.quote-actions .button-text svg{display:none}.detail-panel .micro-label{max-width:95px;font-size:9px}table{font-size:11px}th{padding:11px 12px}td{padding:13px 12px}.methodology-panel{margin-top:18px}.methodology-panel>summary{padding:18px;font-size:12px}.method-summary-note{font-size:0;gap:0}.methodology-content{padding:18px;font-size:11px}.page-footer{padding-top:24px;padding-bottom:27px;font-size:8px}.page-footer p{font-size:8px}.page-footer>div{gap:11px}}
@media(max-width:419px){.header-inner{padding-left:14px;padding-right:14px}.header-nav{gap:13px}.header-nav>a[href="#methodSection"]{display:none}.page-shell{padding-left:12px;padding-right:12px}.page-intro{gap:10px}.page-intro p{max-width:220px;font-size:9px}.data-status{padding:6px;max-width:101px;font-size:8px}.data-status small{font-size:7px}.eyebrow{font-size:8px}h1{font-size:24px}.panel-heading,.panel-body{padding-left:15px;padding-right:15px}.leg-card .leg-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.leg-card .field:has(input[type=datetime-local]){grid-column:1/-1}.metric-value{font-size:19px}.metric-hint{font-size:8px}.metrics-grid{padding-left:15px;padding-right:15px}.metric-card{padding-left:10px;padding-right:8px}.metric-card:nth-child(2n+1){padding-left:10px}.metric-card:nth-child(3n+1){padding-left:0}.metric-label{font-size:9px}.view-tabs button{padding:7px 6px;font-size:9px}.chart-heading h2{font-size:14px}.scenario-controls{padding-left:15px;padding-right:15px}.volatility-control{padding-left:15px;padding-right:15px;gap:7px}.volatility-control>label{font-size:9px}.volatility-number{width:54px}.range-end{font-size:8px}.scenario-inspector{padding-left:15px;padding-right:15px;gap:14px}.scenario-inspector>.field{width:111px}.scenario-summary{gap:9px 13px}.scenario-summary strong,.scenario-summary .summary-value{font-size:15px}.scenario-summary .summary-label{font-size:9px}.quote-actions .button{font-size:9px;padding:6px}.quote-actions{gap:4px}.detail-panel .panel-heading{padding-left:15px;padding-right:15px}h2{font-size:14px}.section-description{font-size:8px}.chart-legend{gap:14px;font-size:9px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media print{body{background:#fff}.site-header,.page-intro .data-status,.strategy-toolbar,.add-leg-buttons,.quote-actions,.page-footer,.advanced-settings,.volatility-control,.analysis-footnote{display:none}.page-shell{max-width:none;padding:0}.workspace{display:block}.input-column{display:none}.analysis-column{display:block}.panel{box-shadow:none;break-inside:avoid;margin-bottom:14px}.market-bar{border:0}.product-tabs button:not(.active){display:none}.preset-control{display:none}.metrics-grid{grid-template-columns:repeat(3,1fr)}.chart-wrap>svg{max-height:330px}.table-scroll{overflow:visible}.detail-panel table{font-size:8px}th,td{padding:7px 5px;font-size:8px}.methodology-panel{break-inside:auto}.chart-panel{overflow:visible}}

/* Dynamic calculation results: class contract shared with options-app.js. */
.preset-actions{display:flex;align-items:center;gap:7px;min-width:0;flex:1}
.preset-actions select{min-width:0;flex:1}
.reload-preset{height:34px;padding:5px 9px;font-size:10px;white-space:nowrap;flex-shrink:0}
.field input[readonly]{background:#f3f6f9;color:#66778b;border-color:#e5eaf0;cursor:default}
.expiry-origin{display:block;font-size:9px;line-height:1.7;color:#678879;margin-top:5px;overflow-wrap:anywhere}
.expiry-origin.estimated{color:#ac803e}
.expiry-table-label{max-width:260px;white-space:normal;line-height:1.6;margin-top:4px}
.expiry-calendar-toolbar{display:flex;align-items:flex-end;gap:18px;padding:18px 21px;border-top:1px solid var(--line)}
.expiry-calendar-toolbar>.field{width:126px;flex-shrink:0}
.expiry-calendar-toolbar>p{font-size:11px;line-height:1.8;color:var(--muted);margin:0;flex:1}
.expiry-calendar-toolbar>.button{white-space:nowrap}
.expiry-calendar-panel .table-scroll{border-top:1px solid var(--line)}
@media(max-width:959px){.preset-actions{width:100%}.preset-control .reload-preset{height:32px;font-size:9px;padding:5px 7px}.preset-control .preset-actions select{width:166px}.expiry-calendar-toolbar{gap:12px;padding:16px}}
@media(max-width:759px){.preset-control{flex-wrap:wrap}.preset-actions{flex:1;min-width:230px}.preset-control .preset-actions select{max-width:none}.expiry-calendar-toolbar{align-items:center;flex-wrap:wrap}.expiry-calendar-toolbar>p{order:3;flex-basis:100%}.expiry-calendar-toolbar>.button{margin-left:auto}.expiry-origin{font-size:10px}.reload-preset{height:35px}}
.quote-summary{display:block;padding:13px 0 1px}
.quote-summary-main{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:11px;color:#7b8795}
.quote-summary-main strong{font-size:19px;font-weight:600;line-height:1.4;letter-spacing:-.25px;color:var(--ink)}
.quote-summary-main strong small{font-size:10px;font-weight:400;color:#96a0ab;letter-spacing:0;margin-left:3px}
.quote-summary-detail{margin-top:7px;padding:8px 10px;border-radius:5px;background:#f7f9fb;font-size:9px;line-height:1.85;color:#8b97a5}
.leg-advanced{padding-top:8px;border-top:1px solid var(--line)}
.leg-advanced>summary{font-size:10px;color:#8995a3;cursor:pointer;line-height:1.7;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:10px}
.leg-advanced>summary::-webkit-details-marker{display:none}
.leg-advanced>summary:after{content:"";width:5px;height:5px;border:1px solid currentColor;border-top:0;border-left:0;transform:rotate(45deg);margin-right:4px;transition:transform .15s}
.leg-advanced[open]>summary:after{transform:rotate(225deg)}
.leg-advanced>.leg-grid{margin-top:12px}
.leg-advanced .leg-note{font-size:9px}
.legs-list:focus-visible{outline:2px solid #ffd0aa;outline-offset:5px;border-radius:6px}
.scenario-summary{display:block}
.scenario-lead{display:flex;justify-content:space-between;align-items:center;gap:8px 15px;flex-wrap:wrap;font-size:10px;color:#8c98a6;line-height:1.7}
.scenario-summary .scenario-lead strong{display:inline;font-size:11px;line-height:1.7;color:#66778b;font-weight:600;margin-left:3px}
.scenario-lead>span:last-child{font-size:9px;color:#a2acb7;white-space:nowrap}
.scenario-values{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px 17px;padding-top:10px}
.scenario-values>div{display:flex;flex-direction:column;gap:3px;min-width:0}
.scenario-values>div>span{font-size:9px;line-height:1.5;color:#919dab}
.scenario-values>div>strong{font-size:15px;line-height:1.4;font-weight:550;letter-spacing:-.2px;color:#66768a;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.scenario-values>div:nth-child(-n+2)>strong{font-size:17px;font-weight:600}
.chart-grid{stroke:#edf0f4;stroke-width:1;fill:none}
.chart-zero{stroke:#c4ccd7;stroke-width:1.15;fill:none}
.chart-label{fill:#929da9;stroke:none;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:12px;font-weight:400}
.table-note{white-space:normal;font-size:10px;line-height:1.8;color:#96a1ae;background:#fcfdfe;padding:12px 20px}
.method-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 38px}
.method-grid>div{min-width:0}
.method-grid>div>h3:first-child{margin-top:0;padding-bottom:9px;border-bottom:1px solid var(--line);margin-bottom:10px}
.method-sources{border-top:1px solid var(--line);padding-top:16px;margin-top:22px;color:#a1aab6;font-size:10px;line-height:2.15}
.method-sources a{white-space:normal}

@media screen and (min-width:760px){
  .analysis-column{position:sticky;top:18px}
  .legs-list{max-height:620px;overflow-y:auto;overscroll-behavior-y:contain;scrollbar-width:thin;scrollbar-color:#d6dee7 transparent;scrollbar-gutter:stable;padding-right:5px}
  .legs-list::-webkit-scrollbar{width:5px}
  .legs-list::-webkit-scrollbar-track{background:transparent}
  .legs-list::-webkit-scrollbar-thumb{background:#d6dee7;border-radius:5px}
  .legs-list>.leg-card{flex-shrink:0}
  .scenario-inspector{align-items:flex-start}
  .scenario-inspector>.field{padding-top:1px}
}
@media screen and (min-width:1200px){
  .scenario-inspector>.field{width:146px}
  .scenario-values{gap:12px 20px}
}
@media screen and (max-width:959px) and (min-width:760px){
  .scenario-summary{width:100%;padding-top:10px}
  .scenario-values{gap:11px 10px}
  .scenario-values>div>strong{font-size:14px}
  .scenario-values>div:nth-child(-n+2)>strong{font-size:15px}
  .scenario-lead{gap:7px;font-size:9px}
}
@media(max-width:759px){
  .desktop-scroll-hint{display:none}
  .legs-list{max-height:none;overflow:visible;padding-right:0}
  .quote-summary-main strong{font-size:20px}
  .quote-summary-detail{font-size:10px;padding:9px 11px}
  .scenario-inspector{flex-direction:column;align-items:stretch;gap:13px}
  .scenario-inspector>.field{width:100%;flex-direction:row;align-items:center;justify-content:space-between}
  .scenario-inspector>.field input{width:143px}
  .scenario-summary{width:100%;padding-top:12px;border-top:1px solid var(--line)}
  .scenario-lead{font-size:10px}
  .scenario-values{gap:14px 16px;padding-top:12px}
  .scenario-values>div>span{font-size:10px}
  .scenario-values>div>strong{font-size:16px}
  .scenario-values>div:nth-child(-n+2)>strong{font-size:18px}
  .chart-label{font-size:20px}
  .method-grid{grid-template-columns:1fr;gap:20px}
  .method-sources{font-size:10px;margin-top:17px;padding-top:13px}
}
@media(max-width:419px){
  .scenario-values{gap:13px 12px}
  .scenario-values>div>strong{font-size:14px}
  .scenario-values>div:nth-child(-n+2)>strong{font-size:16px}
  .scenario-values>div>span{font-size:9px}
  .scenario-summary .scenario-lead strong{font-size:10px}
  .scenario-lead{font-size:9px}
  .scenario-lead>span:last-child{font-size:8px}
  .chart-label{font-size:22px}
}
.expiry-data-table{width:100%;min-width:700px;border-collapse:collapse;font-variant-numeric:tabular-nums}
.expiry-data-table caption{text-align:left;padding:12px 16px;color:var(--muted);font-size:12px}
.expiry-data-table th,.expiry-data-table td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.expiry-data-table thead th{background:var(--surface-soft,#f7f8fa);font-size:12px;font-weight:600;white-space:nowrap}
.expiry-data-table tbody th{font-size:12px;font-weight:500;color:var(--muted);white-space:nowrap}
.expiry-cell strong{display:inline-block;font-size:11px;font-weight:600;margin-right:8px;color:var(--muted)}
.expiry-date{font-size:13px;font-weight:600;white-space:nowrap}
.expiry-status{display:block;margin-top:5px;font-size:10px;line-height:1.55;color:var(--muted);text-decoration:none}
a.expiry-status:hover{text-decoration:underline;color:var(--accent,#e97924)}
.expiry-cell.estimated .expiry-date,.expiry-cell.estimated .expiry-status{color:#a46016}
.expiry-cell.unlisted{color:#7b8492;background:#fafbfc}