:root{--ink:#243842;--muted:#61747d;--accent:#007c9f;--line:#dce7eb;--soft:#f2f8fa;--serif:var(--sans);--turquoise:#008caf;--turquoise-dark:#006c8a}
body{font-size:16px;background:#fff}h1,h2,h3{letter-spacing:-.035em}h1{font-family:var(--sans);font-weight:400;line-height:1.16}h2{font-family:var(--sans);font-weight:500}a:hover{color:var(--turquoise-dark)}.wrap{max-width:1360px;padding-left:40px;padding-right:40px}.button{background:var(--turquoise-dark);border-radius:5px;font-size:15px;padding:14px 20px}.button:hover{background:#005875}.eyebrow{color:var(--accent)}
.site-header{height:auto;display:block;padding:0;border:0;background:var(--turquoise);color:white}.header-inner{max-width:1440px;margin:auto;padding:25px 40px 0;display:grid;grid-template-columns:1fr auto;gap:22px 30px}.site-header .brand{color:white;font:500 29px/1.2 var(--sans);letter-spacing:-1px;white-space:nowrap}.site-header .brand>span{display:inline;font-size:29px;color:#a2e9f7;letter-spacing:0}.header-search{display:flex;align-items:stretch;gap:0}.header-search input{width:270px;background:#fff;color:var(--ink);border:1px solid #d7e8ed;border-radius:5px 0 0 5px;padding:10px 13px;font-size:14px;min-width:0}.header-search button{color:white;background:var(--turquoise-dark);border:1px solid var(--turquoise-dark);border-radius:0 5px 5px 0;padding:10px 17px;cursor:pointer;font-weight:500;font-size:14px}.site-header nav{grid-column:1/-1;display:flex;gap:4px;margin:0;align-items:stretch;border-top:1px solid #ffffff30;padding-top:4px}.site-header nav a{font-size:14px;color:white;padding:15px 20px;white-space:nowrap;font-weight:500;border-radius:5px 5px 0 0}.site-header nav a:first-child{padding-left:20px}.site-header nav a:hover,.site-header nav a[aria-current=page]{background:var(--turquoise-dark);color:white}.site-header nav a span{margin-left:6px;opacity:.8}
.home-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:55px;padding-top:52px;padding-bottom:75px;align-items:start}.home-main{min-width:0}.home-main>h1{font-size:clamp(36px,4.1vw,53px);margin:0 0 32px;letter-spacing:-1.7px}.small-break{display:none}.home-introduction{font-size:17px;line-height:1.8;color:#354c57}.home-introduction p{margin:0 0 18px}.home-introduction a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.strategy-feature{margin:30px 0 42px;border:1px solid #9acee0;border-radius:7px;overflow:hidden;background:#fff}.feature-heading{background:var(--turquoise);color:white;padding:16px 23px;display:flex;align-items:center;justify-content:space-between;gap:16px}.feature-heading h2{font:500 20px/1.3 var(--sans);letter-spacing:-.3px;margin:0}.feature-heading>span{font-size:12px;white-space:nowrap;background:#ffffff20;padding:4px 9px;border-radius:20px}.feature-content{display:grid;grid-template-columns:140px 1fr;gap:24px;padding:26px;align-items:start}.feature-content img{width:100%;height:auto;margin-top:5px}.feature-content p{font-size:16px;line-height:1.7;margin:0 0 14px}.feature-content .button{margin-top:6px}.topic-summaries{display:grid;grid-template-columns:1fr 1fr;gap:30px 34px}.topic-summary{border-top:1px solid var(--line);padding:24px 0 8px}.topic-category{color:var(--muted);font-size:12px;font-weight:600;letter-spacing:.65px;margin-bottom:10px}.topic-summary h2{font:500 23px/1.35 var(--sans);letter-spacing:-.6px;margin-bottom:14px}.topic-summary h2 a{color:var(--accent)}.topic-summary>p:not(.topic-category){font-size:15px;line-height:1.8;color:#4b616c;margin-bottom:15px}.read-link{font-weight:600;font-size:14px;color:var(--accent)}.read-link span{margin-left:8px}
.home-sidebar{padding-top:9px}.follow-panel{background:var(--soft);padding:24px;border-radius:7px;margin-bottom:32px;border-top:3px solid var(--turquoise)}.follow-panel h2{font-size:23px;line-height:1.4;margin:12px 0}.follow-panel>p:not(.topic-category){font-size:14px;color:var(--muted);line-height:1.65}.follow-panel>a{font-size:15px;color:var(--accent);font-weight:600;display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:15px;margin-top:18px}.basics-sidebar h2,.sidebar-more h2{font-size:22px;margin-bottom:17px;font-weight:500;line-height:1.3}.basics-sidebar nav{display:block;margin:0;border:1px solid var(--line);border-radius:6px;overflow:hidden}.basics-sidebar nav a{display:block;padding:13px 17px;margin:0;border-bottom:1px solid var(--line);font-size:14px;line-height:1.5;font-weight:400;color:#4c6876;background:white}.basics-sidebar nav a:last-child{border-bottom:0}.basics-sidebar nav a:hover,.basics-sidebar nav a[aria-current=page]{background:var(--soft);color:var(--turquoise-dark);box-shadow:inset 3px 0 var(--turquoise)}.sidebar-more{margin-top:30px}.sidebar-more a{display:block;font-size:14px;margin:13px 0;color:var(--accent)}
.article-head{max-width:1280px}.article-head h1{font-size:48px;letter-spacing:-1.5px}.article-layout{max-width:1280px;grid-template-columns:minmax(0,1fr) 270px;gap:55px}.article-body h2{font-size:28px;letter-spacing:-.6px}.article-body h3{font-size:22px;letter-spacing:-.4px}.article-body a{color:var(--accent)}.article-body .formula{border-left-color:var(--turquoise);border-radius:0 6px 6px 0}.article-aside .aside-inner{position:static;margin-top:32px;border-top:1px solid var(--line)}.article-aside .aside-inner h2{font-size:16px}.article-body figure{margin:28px 0}.article-body figcaption{font-size:13px;text-align:center;color:var(--muted)}.article-body img{border-radius:3px}.page-intro h1{font-size:48px;letter-spacing:-1.5px}.filters{border-top-color:var(--turquoise);border-radius:6px}.filters select{border-radius:4px}.strategy-card{border-radius:6px}.strategy-card h3{font:500 23px/1.35 var(--sans);letter-spacing:-.5px}.strategy-card:hover{border-color:var(--turquoise)}.empty{border-radius:6px}.empty h2{font-size:28px}.glossary-letters{display:flex;flex-wrap:wrap;gap:6px;margin:20px 0}.glossary-letters a{padding:5px 10px;background:var(--soft);border-radius:4px}.footer-brand{color:var(--turquoise-dark);font-weight:500}footer{background:var(--soft);border-top:3px solid var(--turquoise)}
@media(max-width:1100px){.home-layout{grid-template-columns:minmax(0,1fr) 235px;gap:35px}.site-header nav a{padding:14px 13px;font-size:13px}.header-inner{padding-left:30px;padding-right:30px}.article-layout{grid-template-columns:minmax(0,1fr) 235px;gap:35px}.feature-heading h2{font-size:18px}.feature-heading>span{display:none}.feature-content{grid-template-columns:100px 1fr;gap:20px;padding:22px}.home-main>h1{font-size:43px}.topic-summary h2{font-size:21px}}
@media(max-width:800px){.home-layout{grid-template-columns:minmax(0,1fr);gap:40px;padding-top:35px}.home-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding-top:0}.follow-panel{margin:0}.sidebar-more{margin:0}.site-header nav{overflow-x:auto;scrollbar-width:thin;max-width:100%;width:100%;gap:0}.header-inner{padding-left:24px;padding-right:24px;gap:20px}.site-header .brand{font-size:25px}.header-search input{width:195px}.site-header nav a{padding:14px 16px}.article-layout{grid-template-columns:1fr}.article-aside{display:grid;grid-template-columns:1fr 1fr;gap:25px}.article-aside .aside-inner{margin-top:0}.home-main>h1{font-size:45px}.article-head h1,.page-intro h1{font-size:42px}}
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.futures-markets details{border:1px solid #dce7eb;border-top:0}.futures-markets summary{padding:12px 16px;cursor:pointer;font-weight:600;color:#007f98;background:#f2f8fa}.futures-markets details nav{border:0;border-radius:0}.futures-markets a[aria-current="page"]{background:#e8f5f7;font-weight:600}

.calculator-prompt{border-left:3px solid #008caf;background:#f2f8fa;padding:15px 20px;margin:0 0 22px;font-size:16px}.calculator-prompt a{font-weight:600}

.article-aside>.calculator-prompt{font-size:14px;line-height:1.65;padding:18px;margin:0 0 26px;border-radius:0 6px 6px 0}.article-aside>.calculator-prompt a{display:inline-block;font-size:16px;line-height:1.45;color:var(--accent);margin-bottom:6px}.article-aside>.calculator-prompt{grid-column:1/-1}