:root{--bg:#181a20;--panel:#1e2026;--raised:#23262e;--text:#eaecef;--muted:#848e9c;--line:#2b3139;--accent:#f0b90b;--accent-text:#181a20;--green:#0ecb81;--red:#f6465d;--itm:rgba(14,203,129,.042);--hover:#282c34;--shadow:0 15px 60px #0006;--amber-bg:rgba(240,185,11,.08)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:13px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;font-variant-numeric:tabular-nums}button,input{font:inherit}button{cursor:pointer;border:0;background:none;color:inherit}button:disabled{cursor:wait;opacity:.6}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}a{color:inherit;text-decoration:none}[hidden]{display:none!important}svg{display:block}.topbar{height:64px;display:flex;align-items:center;gap:34px;padding:0 24px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:20px;letter-spacing:.4px;color:var(--accent);white-space:nowrap}.brand strong{font-weight:750}.brand-mark{display:grid;grid-template-columns:7px 7px;gap:3px;transform:rotate(45deg);margin-right:4px}.brand-mark i{width:7px;height:7px;background:var(--accent)}.nav-active{height:64px;display:flex;align-items:center;position:relative;font-weight:600;white-space:nowrap}.nav-active span{position:absolute;bottom:0;width:100%;height:3px;background:var(--accent);border-radius:2px 2px 0 0}.nav-muted{color:var(--muted)}.topbar-right{margin-left:auto;display:flex;align-items:center;gap:22px}.readonly-label{color:var(--muted);font-size:12px;white-space:nowrap}.lock-icon{color:var(--accent);padding-right:6px}.icon-button{width:32px;height:32px;border-radius:6px;display:grid;place-items:center;font-size:23px;color:var(--muted)}.icon-button:hover{background:var(--hover);color:var(--text)}.help-button{display:flex;align-items:center;gap:8px;white-space:nowrap}.help-button span{font-size:11px;border:1px solid var(--muted);border-radius:50%;width:15px;height:15px;display:grid;place-items:center;color:var(--muted)}.market-header{display:flex;align-items:center;gap:40px;padding:22px 24px 21px;min-height:104px;border-bottom:1px solid var(--line)}.asset-name{display:flex;align-items:center;gap:12px;min-width:197px}.bitcoin{font:700 28px/36px Arial;background:#f7931a;color:#fff;width:36px;height:36px;text-align:center;border-radius:50%;transform:rotate(12deg)}h1{font-size:20px;margin:0;letter-spacing:.1px;line-height:1.3}h1 span{font-size:11px;font-weight:500;background:var(--raised);color:var(--muted);padding:3px 6px;border-radius:4px;margin-left:5px;vertical-align:middle}.asset-name p{margin:5px 0 0;font-size:11px;color:var(--muted)}.index-stat,.market-stat{white-space:nowrap}.index-stat label,.market-stat label{display:block;font-size:11px;color:var(--muted);margin-bottom:5px}.index-stat strong{font-size:26px;line-height:1.2;color:var(--accent);font-weight:600;letter-spacing:-.5px}.index-stat small,.market-stat small{font-size:10px;color:var(--muted);margin-left:5px}.market-stat strong{font-size:15px;font-weight:500}.connection-summary{margin-left:auto;text-align:right;white-space:nowrap}.connection-badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;color:var(--green)}.connection-badge i,.live-dot{height:5px;width:5px;display:inline-block;border-radius:50%;background:var(--green)}.connection-badge.stale{color:var(--accent)}.connection-badge.stale i{background:var(--accent)}.connection-badge.loading{color:var(--muted)}.connection-badge.loading i{background:var(--muted)}.connection-summary>div{color:var(--muted);font-size:10px;margin-top:6px}.expiry-bar{display:flex;align-items:center;gap:22px;padding:0 24px;border-bottom:1px solid var(--line);height:61px}.expiry-label,.timezone-label{color:var(--muted);font-size:11px;white-space:nowrap}.expiry-tabs{display:flex;gap:10px;overflow:auto;align-items:center;scrollbar-width:none;flex:1;min-width:0}.expiry-tabs::-webkit-scrollbar{display:none}.expiry-tabs button{border-radius:5px;padding:7px 13px;color:var(--muted);white-space:nowrap;font-size:12px;display:flex;gap:6px;align-items:center;line-height:1.4}.expiry-tabs button:hover{background:var(--hover);color:var(--text)}.expiry-tabs button.active{background:var(--accent);color:var(--accent-text);font-weight:600}.expiry-tabs small{font-size:9px;opacity:.8}.loading-label{font-size:12px;color:var(--muted)}.filter-bar{display:flex;align-items:center;gap:12px;padding:15px 24px;border-bottom:1px solid var(--line);min-height:65px}.segmented{display:flex;background:var(--panel);border:1px solid var(--line);padding:3px;border-radius:5px;gap:2px}.segmented button{font-size:11px;padding:4px 12px;border-radius:3px;color:var(--muted)}.segmented button.active{color:var(--text);background:var(--hover)}.search-box{display:flex;align-items:center;gap:8px;padding:0 10px;height:32px;width:191px;border:1px solid var(--line);border-radius:5px;background:var(--panel)}.search-box svg{width:15px;fill:none;stroke:var(--muted);stroke-width:1.7}.search-box input{border:0;background:none;color:var(--text);outline:0;min-width:0;width:100%;font-size:11px}.search-box input::placeholder{color:var(--muted)}.filter-button{height:32px;display:flex;align-items:center;gap:7px;padding:0 10px;border:1px solid var(--line);border-radius:5px;font-size:11px;white-space:nowrap;color:var(--muted)}.filter-button:hover{color:var(--text);background:var(--hover)}.filter-button.active{border-color:#f0b90b70;color:var(--accent);background:var(--amber-bg)}.filter-icon{font-size:15px;line-height:1}.filter-button b{font-size:9px;font-weight:500;line-height:14px;min-width:16px;text-align:center;background:var(--raised);border-radius:3px;color:var(--text)}.filter-spacer{flex:1}.refresh-button{display:flex;align-items:center;gap:7px;color:var(--accent);height:32px;padding:0 5px;font-size:11px}.refresh-button svg{width:15px;fill:none;stroke:currentColor;stroke-width:1.6}.refresh-button.busy svg{animation:spin 1s linear infinite}.notice-bar{padding:9px 24px;font-size:11px;color:var(--accent);background:var(--amber-bg);border-bottom:1px solid var(--line)}.notice-bar button{padding:0 0 0 12px;text-decoration:underline;color:var(--accent)}.chain-area{min-height:320px}.chain-scroll{height:clamp(385px,calc(100vh - 440px),665px);overflow:auto;scrollbar-width:thin;scrollbar-color:#414650 var(--bg);position:relative}.option-chain{border-collapse:separate;border-spacing:0;width:100%;table-layout:fixed;min-width:1000px}.option-chain th{font-weight:400}.wing-head th{height:36px;background:var(--panel);border-bottom:1px solid var(--line);font-size:12px}.wing-head .call-title{color:var(--green)}.wing-head .put-title{color:var(--red)}.wing-head span{opacity:.5;font-size:10px;margin-left:6px}.wing-head th:nth-child(2){font-size:10px;color:var(--muted);width:114px;background:var(--bg)}.column-head th{font-size:10px;color:var(--muted);background:var(--bg);height:34px;border-bottom:1px solid var(--line);padding:0 9px;text-align:right}.column-head th.center-head{text-align:center;background:var(--panel);color:var(--text)}thead{position:sticky;top:0;z-index:4}.group-heading td{background:var(--panel);padding:9px 22px;border-bottom:1px solid var(--line);font-size:11px;color:var(--muted);height:37px}.group-heading strong{font-weight:500;color:var(--text);margin-right:17px}.group-heading .group-meta{display:inline-flex;gap:20px}.group-heading .group-meta b{font-weight:400;color:var(--text);margin-left:5px}.group-heading .group-count{float:right;font-size:10px}.quote-row td{height:51px;text-align:right;padding:6px 9px;border-bottom:1px solid #2b313959;cursor:pointer;transition:background .12s;font-size:12px;position:relative}.quote-row .itm{background:var(--itm)}.quote-row:hover td:not(.strike-cell){background:var(--hover)}.quote-row td.selected-cell{background:rgba(240,185,11,.08);box-shadow:inset 0 1px #f0b90b45,inset 0 -1px #f0b90b45}.quote-row .strike-cell{cursor:default;position:sticky;left:0;z-index:2;text-align:center;background:var(--panel);padding:6px 4px;border-left:1px solid var(--line);border-right:1px solid var(--line);color:var(--accent);font-size:13px;font-weight:600}.quote-row .strike-cell small{display:block;font-size:8px;line-height:1.3;color:var(--muted);font-weight:400}.quote-row .strike-cell.atm-strike{box-shadow:inset 3px 0 var(--accent)}.quote-row.atm-row td{border-bottom-color:#f0b90b45}.quote-row .quote-price{display:block;line-height:1.5;font-weight:500}.quote-row .bid-price{color:var(--green)}.quote-row .ask-price{color:var(--red)}.quote-row .quote-iv{display:block;font-size:9px;color:var(--muted);line-height:1.2}.quote-row .delta-cell,.quote-row .volume-cell{color:#b7bdc6;font-size:11px}.quote-row .missing-cell{color:#4b535e;cursor:default}.favorite-indicator{position:absolute;left:5px;top:4px;font-size:9px;color:var(--accent)}.chain-footer{display:flex;justify-content:space-between;gap:12px;align-items:center;min-height:35px;padding:0 24px;border-bottom:1px solid var(--line);font-size:10px;color:var(--muted);background:var(--panel)}.chain-footer>div{display:flex;align-items:center;gap:8px}.footer-divider{color:#414650;margin:0 5px}.legend-itm{background:rgba(14,203,129,.15);width:9px;height:9px;display:inline-block;border-radius:2px}.table-loading,.empty-state{height:100%;min-height:260px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:13px}.table-loading strong,.empty-state strong{font-size:14px;font-weight:500}.table-loading>span,.empty-state p{font-size:11px;color:var(--muted)}.loader{width:24px;height:24px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite}.empty-state>span{font-size:45px;color:var(--muted)}.empty-state p{margin:0}.empty-state button{background:var(--raised);padding:8px 15px;border-radius:5px;color:var(--accent);font-size:11px}.bottom-panel{padding:0 24px}.bottom-heading{height:49px;display:flex;align-items:center;gap:13px;border-bottom:1px solid var(--line)}.bottom-heading h2{font-size:12px;font-weight:500;margin:0;align-self:stretch;display:flex;align-items:center;border-bottom:2px solid var(--accent)}.bottom-heading>span{color:var(--muted);font-size:10px}.small-legend{margin-left:auto;display:flex;gap:15px;font-size:10px}.call-color{color:var(--green)}.put-color{color:#ab87ff}.bottom-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:36px;padding:18px 0 20px}.overview-card{min-width:0}.overview-card-top{display:flex;align-items:center;justify-content:space-between}.overview-card h3{font-size:11px;font-weight:500;margin:0}.overview-card-top>span{font-size:10px;color:var(--muted)}.iv-chart{height:123px;margin-top:9px;position:relative;display:grid;place-items:center;color:var(--muted);font-size:11px}.iv-chart svg{width:100%;height:100%;overflow:visible}.chart-axis{fill:var(--muted);font-size:8px}.chart-grid{stroke:var(--line);stroke-dasharray:3 4;stroke-width:.5}.chart-call{stroke:var(--green);fill:none;stroke-width:1.5;stroke-linejoin:round}.chart-put{stroke:#ab87ff;fill:none;stroke-width:1.5;stroke-linejoin:round}.chart-point{cursor:help}.volume-comparison{display:flex;justify-content:space-between;padding-top:15px;font-size:10px}.volume-comparison>div:last-child{text-align:right}.volume-comparison strong{display:block;font-size:20px;font-weight:500;margin-top:4px;color:var(--text)}.volume-bar{display:flex;height:4px;gap:3px;margin-top:13px;border-radius:4px;overflow:hidden;background:var(--line)}.volume-bar span:first-child{background:var(--green);width:50%}.volume-bar span:last-child{background:#ab87ff;flex:1}.volume-card>p{text-align:right;margin:6px 0 0;font-size:9px;color:var(--muted)}.market-note{font-size:9px;color:var(--muted);line-height:1.6;margin-top:8px}.page-footer{padding:11px 24px;display:flex;align-items:center;gap:15px;justify-content:space-between;border-top:1px solid var(--line);color:var(--muted);font-size:9px;letter-spacing:.2px}.page-footer>span:first-child{letter-spacing:1.1px;color:#646e7c}.page-footer a:hover{color:var(--accent)}.drawer-backdrop{position:fixed;inset:0;background:#0005;z-index:10;backdrop-filter:blur(1px)}.detail-drawer{position:fixed;right:0;top:0;bottom:0;width:370px;max-width:95vw;background:var(--bg);border-left:1px solid var(--line);z-index:11;box-shadow:var(--shadow);padding:0 24px 24px;overflow:auto;animation:slide .18s ease-out}.drawer-top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);height:64px;margin-bottom:23px}.drawer-top h2{font-size:15px;font-weight:600;margin:0}.contract-type{display:inline-flex;align-items:center;font-size:10px;gap:6px;color:var(--red);background:rgba(246,70,93,.09);padding:4px 8px;border-radius:4px}.contract-type.call{color:var(--green);background:rgba(14,203,129,.09)}.detail-symbol{margin:13px 0 4px;font-size:17px;font-weight:600}.detail-expiry{font-size:11px;color:var(--muted)}.detail-mark{margin:26px 0 18px}.detail-mark label{font-size:11px;color:var(--muted);display:block;margin-bottom:5px}.detail-mark strong{font-size:34px;font-weight:500;letter-spacing:-.5px}.detail-mark span{font-size:11px;color:var(--muted);padding-left:5px}.detail-quotes{display:grid;grid-template-columns:1fr 1fr;gap:12px}.detail-quotes>div{padding:12px 13px;border:1px solid var(--line);border-radius:5px}.detail-quotes label{display:block;color:var(--muted);font-size:10px}.detail-quotes strong{display:block;font-size:20px;font-weight:500;margin-top:3px}.detail-quotes .bid strong{color:var(--green)}.detail-quotes .ask strong{color:var(--red)}.detail-quotes small{font-size:10px;color:var(--muted)}.detail-section{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}.detail-section h3{font-size:12px;margin:0 0 12px;font-weight:500}.detail-section dl{margin:0}.detail-section dl>div{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;font-size:11px}.detail-section dt{color:var(--muted)}.detail-section dd{margin:0}.detail-greeks{display:grid;grid-template-columns:1fr 1fr;gap:14px}.detail-greeks label{font-size:10px;display:block;color:var(--muted)}.detail-greeks strong{display:block;font-size:14px;font-weight:500;margin-top:4px}.detail-favorite{width:100%;padding:10px;border:1px solid var(--line);border-radius:5px;margin-top:20px;font-size:12px;color:var(--accent)}.detail-favorite:hover{background:var(--amber-bg)}.detail-note{font-size:10px;line-height:1.8;color:var(--muted);margin:20px 0 0}dialog{background:var(--bg);color:var(--text);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:9px;width:480px;max-width:92vw;padding:24px}dialog::backdrop{background:#0009}.dialog-top{display:flex;justify-content:space-between;align-items:center}.dialog-top h2{margin:0;font-size:17px}dialog>p{font-size:12px;line-height:1.8;color:var(--muted);margin:18px 0}dialog dl{font-size:12px}dialog dt{margin-top:15px;margin-bottom:4px;color:var(--text)}dialog dd{color:var(--muted);margin:0;font-size:11px;line-height:1.8}.dialog-primary{padding:9px 20px;border-radius:5px;background:var(--accent);color:var(--accent-text);margin-top:8px;font-size:12px}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}body.light{--bg:#fff;--panel:#fafafa;--raised:#f2f3f5;--text:#1e2329;--muted:#707a8a;--line:#e5e8eb;--hover:#f2f3f5;--itm:rgba(14,150,103,.035);--shadow:0 15px 60px #0002;--green:#079867;--red:#d9304c}.light .quote-row .delta-cell,.light .quote-row .volume-cell{color:#586171}.light .quote-row td{border-bottom-color:#e5e8eb}.light .quote-row .missing-cell{color:#b2bac4}@keyframes spin{to{transform:rotate(360deg)}}@keyframes slide{from{transform:translateX(25px);opacity:0}to{transform:translateX(0);opacity:1}}
@media(min-width:1650px){.market-header{gap:50px}.option-chain .quote-row td{padding:6px 15px}.column-head th{padding:0 15px}.chain-scroll{height:clamp(385px,calc(100vh - 454px),760px)}}
@media(max-width:1200px){.market-header{gap:25px}.market-stat:nth-of-type(4){display:none}.filter-bar{gap:8px}.filter-button{padding:0 8px}.search-box{width:170px}.topbar{gap:25px}.market-header{padding:20px}.topbar,.expiry-bar,.filter-bar{padding-left:20px;padding-right:20px}.filter-button span.filter-icon{display:none}.connection-summary{font-size:10px}}
@media(max-width:850px){.nav-muted,.readonly-label,.timezone-label{display:none}.market-stat:nth-of-type(3){display:none}.market-header{gap:20px;flex-wrap:wrap;padding:16px}.market-header .asset-name{min-width:165px}.asset-name h1{font-size:17px}.index-stat strong{font-size:23px}.market-header .connection-summary{margin-left:auto}.market-stat:nth-of-type(5){display:none}.topbar{gap:22px;padding:0 16px;height:57px}.brand{font-size:17px}.nav-active{height:57px}.help-button{font-size:11px}.topbar-right{gap:10px}.expiry-bar{padding:0 16px;height:54px;gap:12px}.expiry-tabs{gap:5px}.expiry-tabs button{padding:6px 10px}.filter-bar{padding:12px 16px;flex-wrap:wrap;gap:8px}.filter-spacer{display:none}.search-box{flex:1;min-width:170px}.refresh-button{margin-left:auto}.chain-scroll{height:480px}.chain-footer{padding:8px 16px;font-size:9px;flex-wrap:wrap}.chain-footer>div:last-child{display:none}.bottom-panel{padding:0 16px}.bottom-grid{gap:22px}.page-footer{padding:10px 16px}.page-footer>span:first-child{display:none}.notice-bar{padding:8px 16px}.bottom-grid{grid-template-columns:1.4fr 1fr}}
.scroll-hint{display:none;font-size:9px;color:var(--muted);padding:7px 16px;text-align:center;border-bottom:1px solid var(--line)}
@media(max-width:1000px){.scroll-hint{display:block}}
@media(max-width:550px){.topbar{gap:20px}.nav-active{font-size:12px}.help-button{font-size:0;gap:0}.topbar-right{gap:3px}.market-header{gap:13px;justify-content:space-between}.asset-name{min-width:initial!important}.asset-name p{font-size:10px}.bitcoin{width:30px;height:30px;font-size:24px;line-height:30px}.asset-name h1{font-size:16px}.index-stat label{font-size:10px}.index-stat strong{font-size:20px}.connection-summary{margin-left:0!important;width:100%;display:flex;justify-content:space-between;align-items:center}.connection-summary>div{margin:0}.market-stat{display:none}.expiry-label{display:none}.segmented button{padding:4px 9px}.filter-button{padding:0 8px}.bottom-grid{grid-template-columns:1fr;gap:20px}.volume-card{border-top:1px solid var(--line);padding-top:15px}.bottom-heading>span{font-size:9px}.small-legend{gap:9px}.chain-scroll{height:430px}.page-footer{font-size:8px}.search-box{min-width:140px}.group-heading .group-meta{gap:10px}.group-heading td{padding:9px 12px}.group-heading .group-count{display:none}.detail-drawer{width:350px}}