*{margin:0;padding:0;box-sizing:border-box}
        :root{
            --bg:#fff;--text:#333;--muted:#999;--light:#b5b5b5;--line:#e5e5e5;--dark:#1a1a1a;
            --blue:#2a6cb6;--blue-bg:#f0f5fb;
            --teal:#1a7a5a;--teal-bg:#edf7f2;
            --amber:#8a5a10;--amber-bg:#fdf5e6;
            --coral:#a04020;--coral-bg:#fdf0eb;
            --purple:#6b46a8;--purple-bg:#f4f0fa;
        }
        ::selection{background:#d5d5d5;color:var(--dark)}
        html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
        body{font-family:'Source Serif 4',Georgia,serif;background:var(--bg);color:var(--text);line-height:1.75;font-size:17px;-webkit-font-smoothing:antialiased}

        .layout{display:flex;min-height:100vh;max-width:1060px;margin:0 auto;padding:56px 32px 80px 0}
        nav{position:sticky;top:56px;align-self:flex-start;min-width:150px;padding:0 36px 0 32px;text-align:right}
        nav a{display:block;font-family:'Inter',sans-serif;font-size:13px;font-weight:400;color:var(--muted);text-decoration:none;padding:3px 0;transition:color .2s}
        nav a:hover{color:var(--dark)}
        nav a.active{color:var(--dark);font-weight:500;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
        .nav-back{font-family:'Inter',sans-serif;font-size:11px;color:var(--light);text-decoration:none;display:block;margin-bottom:18px;padding:3px 0;transition:color .2s}
        .nav-back:hover{color:var(--muted)}
        .nav-sep{height:1px;background:var(--line);margin:14px 0}
        .nav-section-label{font-family:'Inter',sans-serif;font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--light);padding:3px 0;display:block}
        .nav-section a{display:block;font-family:'Inter',sans-serif;font-size:12px;color:var(--light);text-decoration:none;padding:2px 0;transition:color .2s}
        .nav-section a:hover{color:var(--muted)}
        .divider{width:1px;background:var(--line);flex-shrink:0}
        main{flex:1;padding-left:48px;max-width:680px}

        .page-meta{display:flex;align-items:center;gap:10px;margin-bottom:8px}
        .page-series{font-family:'Inter',sans-serif;font-size:11px;color:var(--light);text-transform:uppercase;letter-spacing:.08em}
        .page-dot{width:3px;height:3px;background:var(--light);border-radius:50%;flex-shrink:0}
        .page-num{font-family:'Inter',sans-serif;font-size:11px;color:var(--light)}
        .page-title{font-size:22px;font-weight:600;color:var(--dark);line-height:1.3;margin-bottom:10px}
        .page-desc{font-size:16px;color:var(--muted);line-height:1.7;margin-bottom:36px;max-width:620px}

        .section{margin-bottom:44px}
        .section-label{font-family:'Inter',sans-serif;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--light);margin-bottom:10px}
        h2.section-title{font-size:18px;font-weight:600;color:var(--dark);margin-bottom:12px;line-height:1.35}
        .prose p{font-size:16px;color:#3a3a3a;line-height:1.85;margin-bottom:14px}
        .prose p:last-child{margin-bottom:0}
        .prose strong{color:var(--dark);font-weight:600}
        .prose a{color:var(--blue)}

        /* SHARED */
        .slider-row{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap}
        .slider-label{font-family:'Inter',sans-serif;font-size:12px;color:var(--muted);flex-shrink:0;min-width:110px}
        input[type=range]{flex:1;min-width:100px;accent-color:var(--dark)}
        .slider-val{font-family:'Inter',sans-serif;font-size:13px;font-weight:600;color:var(--dark);min-width:64px;text-align:right}
        .chart-area{width:100%;height:190px}
        .chart-area canvas{width:100%;height:100%;display:block}
        .chart-area.sm{height:160px}
        .insight{font-family:'Inter',sans-serif;font-size:12px;color:var(--muted);padding:10px 12px;border-left:3px solid var(--line);background:#f9f9f9;line-height:1.65;margin-top:12px}
        .insight span{font-weight:600;color:var(--dark)}
        .insight.warn{border-color:var(--coral);background:var(--coral-bg)}
        .insight.good{border-color:var(--teal);background:var(--teal-bg)}
        .insight.amber{border-color:var(--amber);background:var(--amber-bg)}
        .viz-wrap{margin:20px 0 0;border:1px solid var(--line);padding:22px 20px}
        .viz-title{font-family:'Inter',sans-serif;font-size:13px;font-weight:600;color:var(--dark);margin-bottom:4px}
        .viz-sub{font-family:'Inter',sans-serif;font-size:12px;color:var(--muted);margin-bottom:16px;line-height:1.6}

        .stats3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:12px}
        .stats4{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:12px}
        .sc{background:#fff;padding:11px 10px;text-align:center}
        .sc-v{font-family:'Source Serif 4',serif;font-size:17px;font-weight:600;color:var(--dark);line-height:1.1;margin-bottom:3px}
        .sc-v.pos{color:var(--teal)}
        .sc-v.neg{color:var(--coral)}
        .sc-v.amber{color:var(--amber)}
        .sc-l{font-family:'Inter',sans-serif;font-size:9px;color:var(--light);text-transform:uppercase;letter-spacing:.06em}

        /* ── SPREAD TAXONOMY ────────────────────────────────── */
        .spread-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin:20px 0 0}
        .sg-head{padding:11px 14px;font-family:'Inter',sans-serif;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em}
        .sg-head.cs{background:var(--coral-bg);color:var(--coral)}
        .sg-head.fs{background:var(--amber-bg);color:var(--amber)}
        .sg-head.bs{background:var(--purple-bg);color:var(--purple)}
        .sg-cell{background:#fff;padding:14px 14px;font-family:'Inter',sans-serif;font-size:12px;color:#3a3a3a;line-height:1.7}
        .sg-cell strong{color:var(--dark);font-weight:600}

        /* ── BASIS RISK SIMULATOR ───────────────────────────── */
        .basis-tabs{display:flex;gap:1px;background:var(--line);border:1px solid var(--line);margin-bottom:14px}
        .bt-tab{flex:1;padding:9px 8px;font-family:'Inter',sans-serif;font-size:11px;font-weight:500;color:var(--muted);text-align:center;cursor:pointer;background:#fff;transition:all .15s}
        .bt-tab:hover{background:#fafafa}
        .bt-tab.btactive{background:var(--dark);color:#fff}

        /* ── CORRELATION MATRIX ─────────────────────────────── */
        .corr-wrap{margin:20px 0 0;border:1px solid var(--line);padding:22px 20px}
        .corr-tabs{display:flex;gap:1px;background:var(--line);border:1px solid var(--line);margin-bottom:16px}
        .ct-tab{flex:1;padding:9px 8px;font-family:'Inter',sans-serif;font-size:11px;font-weight:500;color:var(--muted);text-align:center;cursor:pointer;background:#fff;transition:all .15s}
        .ct-tab:hover{background:#fafafa}
        .ct-tab.ctactive{background:var(--dark);color:#fff}

        .corr-matrix{width:100%;border-collapse:collapse;margin-bottom:12px}
        .corr-matrix th{font-family:'Inter',sans-serif;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--light);padding:6px 8px;border-bottom:1px solid var(--line);text-align:center}
        .corr-matrix th:first-child{text-align:left}
        .corr-matrix td{font-family:'Inter',sans-serif;font-size:12px;color:var(--dark);padding:7px 8px;border-bottom:1px solid #f5f5f5;text-align:center}
        .corr-matrix td:first-child{color:var(--muted);text-align:left;font-weight:500}
        .corr-matrix tr:last-child td{border-bottom:none}
        .corr-cell{padding:5px 10px;font-weight:600;font-size:12px}
        .c-diag{background:#f5f5f5;color:var(--light)}
        .c-high{background:rgba(160,64,32,.12);color:var(--coral)}
        .c-mod{background:rgba(138,90,16,.1);color:var(--amber)}
        .c-low{background:rgba(181,181,181,.12);color:#666}
        .c-neg{background:rgba(26,122,90,.1);color:var(--teal)}

        .var-comparison{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:12px}
        .vc-cell{background:#fff;padding:14px 16px;text-align:center}
        .vc-val{font-family:'Source Serif 4',serif;font-size:22px;font-weight:600;margin-bottom:4px}
        .vc-lbl{font-family:'Inter',sans-serif;font-size:9px;color:var(--light);text-transform:uppercase;letter-spacing:.06em}
        .vc-sub{font-family:'Inter',sans-serif;font-size:11px;color:var(--muted);margin-top:4px}

        /* ── HEDGE BREAKDOWN EXAMPLES ───────────────────────── */
        .breakdown-list{margin:16px 0 0}
        .bd-item{border:1px solid var(--line);padding:16px 18px;margin-bottom:8px;cursor:pointer;transition:border-color .15s}
        .bd-item:hover{border-color:var(--muted)}
        .bd-item.bdopen{border-color:var(--dark)}
        .bd-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
        .bd-title{font-family:'Inter',sans-serif;font-size:13px;font-weight:600;color:var(--dark);margin-bottom:3px}
        .bd-sub{font-family:'Inter',sans-serif;font-size:11px;color:var(--light)}
        .bd-toggle{font-size:16px;color:var(--light);flex-shrink:0;transition:transform .2s}
        .bd-item.bdopen .bd-toggle{transform:rotate(45deg);color:var(--dark)}
        .bd-body{display:none;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
        .bd-item.bdopen .bd-body{display:block}
        .bd-body-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
        .bd-col-label{font-family:'Inter',sans-serif;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin-bottom:6px}
        .bd-col-body{font-family:'Inter',sans-serif;font-size:12px;color:#3a3a3a;line-height:1.7}
        .bd-col-body strong{color:var(--dark);font-weight:600}
        .bd-lesson{font-family:'Inter',sans-serif;font-size:12px;color:var(--amber);padding:10px 12px;border-left:3px solid var(--amber);background:var(--amber-bg);margin-top:12px;line-height:1.65}
        .bd-lesson strong{color:var(--amber);font-weight:600}

        /* TAKEAWAYS */
        .takeaway-box{border:1px solid var(--line);padding:20px 22px;margin:8px 0 0;background:#fafafa}
        .tb-label{font-family:'Inter',sans-serif;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--light);margin-bottom:12px}
        .takeaway-box ul{list-style:none;padding:0}
        .takeaway-box ul li{font-family:'Inter',sans-serif;font-size:13px;color:#3a3a3a;padding:5px 0;border-bottom:1px solid var(--line);line-height:1.6}
        .takeaway-box ul li:last-child{border-bottom:none}
        .takeaway-box ul li::before{content:'✓  ';color:var(--teal);font-weight:600}

        .page-nav{display:flex;justify-content:space-between;margin-top:52px;padding-top:18px;border-top:1px solid var(--line)}
        .page-nav a{font-family:'Inter',sans-serif;font-size:13px;color:var(--muted);text-decoration:none;border:1px solid var(--line);padding:8px 16px;transition:all .2s}
        .page-nav a:hover{color:var(--dark);border-color:var(--muted)}
        .pn-label{font-size:10px;color:var(--light);display:block;margin-bottom:1px}
        .footer{margin-top:36px;padding-top:16px;border-top:1px solid var(--line);font-family:'Inter',sans-serif;font-size:12px;color:var(--light)}

        @media(max-width:768px){
            .layout{flex-direction:column;padding:28px 20px}
            nav{position:static;text-align:left;min-width:auto;padding:0 0 24px 0;display:flex;flex-wrap:wrap;gap:3px 14px}
            nav a{display:inline}
            .nav-back,.nav-sep,.nav-section{display:none}
            .divider{width:100%;height:1px}
            main{padding-left:0;padding-top:28px;max-width:100%}
            .spread-grid,.stats3,.stats4,.var-comparison,.bd-body-grid{grid-template-columns:1fr}
        }
    
        /* Ortak öğrenme, kaynak ve erişilebilirlik katmanı */
        :focus-visible{outline:3px solid var(--blue);outline-offset:3px}
        .learning-goals{border-left:3px solid var(--teal);background:var(--teal-bg);padding:13px 16px;margin:-18px 0 36px;font-family:'Inter',sans-serif;color:#2f4b41}
        .learning-goals-title{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.09em;color:var(--teal);margin-bottom:6px}
        .learning-goals ul{margin:0;padding-left:18px}
        .learning-goals li{font-size:12px;line-height:1.6;margin:3px 0}
        .source-note{margin:42px 0 0;padding:14px 16px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-family:'Inter',sans-serif;font-size:11px;color:var(--muted);line-height:1.65}
        .source-note strong{color:var(--dark);font-weight:600}
        .source-note ul{margin:7px 0 5px;padding-left:18px}
        .source-note a{color:var(--blue);text-underline-offset:2px}
        .source-note .scope-note{margin-top:6px}
        canvas{max-width:100%}
        @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}