*{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;
            --slate:#445566;--slate-bg:#f0f2f5;
        }
        ::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 56px 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:14px;font-weight:400;color:var(--muted);text-decoration:none;padding:4px 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-sep{height:1px;background:var(--line);margin:10px 0}
        .nav-back{color:var(--light) !important;font-size:13px !important}
        .nav-back:hover{color:var(--dark) !important}
        .divider{width:1px;background:var(--line);flex-shrink:0}
        main{flex:1;padding-left:48px;max-width:680px}

        .page-label{font-family:'Inter',sans-serif;font-size:13px;color:var(--light);margin-bottom:2px}
        .page-name{font-size:20px;font-weight:400;color:var(--dark);margin-bottom:40px}

        section{margin-bottom:52px;scroll-margin-top:40px}
        section h2{font-size:17px;font-weight:700;color:var(--dark);margin-bottom:14px;text-transform:lowercase}
        section p{margin-bottom:10px}
        section p:last-child{margin-bottom:0}

        strong{font-weight:600;color:var(--dark)}
        em{font-style:italic}
        .note{border-left:3px solid var(--blue);padding:10px 16px;margin:16px 0;font-size:15px;background:var(--blue-bg);color:var(--blue)}
        .note-teal{border-left:3px solid var(--teal);padding:10px 16px;margin:16px 0;font-size:15px;background:var(--teal-bg);color:var(--teal)}
        .note-amber{border-left:3px solid var(--amber);padding:10px 16px;margin:16px 0;font-size:15px;background:var(--amber-bg);color:var(--amber)}

        /* ══════════════════════════════════════════
           GELİR KAYNAKLARI SİMÜLATÖRÜ
        ══════════════════════════════════════════ */

        .income-sim{border:1px solid var(--line);margin:24px 0;overflow:hidden}
        .is-header{
            padding:12px 18px;background:#fafafa;border-bottom:1px solid var(--line);
            font-family:'Inter',sans-serif;font-size:9px;font-weight:600;
            text-transform:uppercase;letter-spacing:.09em;color:var(--light);
        }
        .is-body{padding:18px 18px 14px}

        .sl-row{
            display:grid;grid-template-columns:150px 1fr 70px;
            align-items:center;gap:12px;margin-bottom:10px;
        }
        .sl-label{font-family:'Inter',sans-serif;font-size:11px;font-weight:500;color:var(--dark);text-align:right}
        .sl-range{
            -webkit-appearance:none;appearance:none;
            width:100%;height:4px;background:var(--line);outline:none;cursor:pointer;border-radius:0;
        }
        .sl-range::-webkit-slider-thumb{
            -webkit-appearance:none;appearance:none;
            width:12px;height:12px;border-radius:50%;
            background:var(--dark);cursor:pointer;
            border:2px solid #fff;box-shadow:0 0 0 1px var(--dark);
        }
        .sl-val{font-family:'Inter',sans-serif;font-size:11px;font-weight:600;color:var(--dark)}

        /* Stacked bar */
        .income-bar-wrap{margin:18px 0 12px}
        .ib-label-row{
            display:flex;justify-content:space-between;
            margin-bottom:6px;font-family:'Inter',sans-serif;font-size:10px;color:var(--muted);
        }
        .ib-track{height:36px;display:flex;border:1px solid var(--line);overflow:hidden}
        .ib-seg{height:100%;display:flex;align-items:center;justify-content:center;transition:width .3s ease;overflow:hidden}
        .ib-seg-label{
            font-family:'Inter',sans-serif;font-size:9px;font-weight:600;
            color:#fff;white-space:nowrap;padding:0 6px;
        }
        .ib-legend{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
        .ib-leg-item{display:flex;align-items:center;gap:5px;font-family:'Inter',sans-serif;font-size:10px;color:var(--muted)}
        .ib-leg-dot{width:10px;height:10px;flex-shrink:0}

        /* P&L özet */
        .pl-summary{
            display:grid;grid-template-columns:repeat(4,1fr);
            gap:1px;background:var(--line);border:1px solid var(--line);margin-top:14px;
        }
        .pls-cell{background:#fff;padding:12px 12px;text-align:center}
        .pls-label{font-family:'Inter',sans-serif;font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--light);margin-bottom:5px}
        .pls-val{font-family:'Source Serif 4',serif;font-size:20px;font-weight:600;color:var(--dark);line-height:1.1;margin-bottom:2px}
        .pls-sub{font-family:'Inter',sans-serif;font-size:10px;color:var(--muted)}
        .pls-cell.profit .pls-val{color:var(--teal)}
        .pls-cell.cost .pls-val{color:var(--coral)}

        /* ══════════════════════════════════════════
           GELİR KALEMLERİ — Açıklamalı kartlar
        ══════════════════════════════════════════ */

        .income-items{margin:20px 0}
        .income-item{
            border:1px solid var(--line);margin-bottom:6px;overflow:hidden;
            display:grid;grid-template-columns:6px 1fr;
            transition:border-color .15s;cursor:pointer;
        }
        .income-item:hover{border-color:var(--muted)}
        .income-item.open{border-color:var(--muted)}
        .ii-stripe{transition:background .15s}
        .ii-body{padding:0}
        .iib-header{display:flex;align-items:center;gap:10px;padding:12px 14px}
        .iib-icon{font-size:16px;flex-shrink:0}
        .iib-title{font-family:'Inter',sans-serif;font-size:12px;font-weight:500;color:var(--dark);flex:1}
        .iib-pct{font-family:'Inter',sans-serif;font-size:11px;font-weight:600;flex-shrink:0;min-width:35px;text-align:right}
        .iib-toggle{font-size:14px;color:var(--light);transition:transform .15s;flex-shrink:0}
        .income-item.open .iib-toggle{transform:rotate(45deg)}
        .iib-content{
            display:none;border-top:1px solid var(--line);padding:10px 14px 12px;
        }
        .income-item.open .iib-content{display:block;animation:fadeIn .15s ease}
        @keyframes fadeIn{from{opacity:0}to{opacity:1}}

        .iib-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:8px}
        .ig-item{}
        .ig-label{font-family:'Inter',sans-serif;font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--light);margin-bottom:4px}
        .ig-text{font-family:'Inter',sans-serif;font-size:11px;color:var(--text);line-height:1.55}
        .iib-note{font-family:'Inter',sans-serif;font-size:11px;color:var(--muted);line-height:1.6;padding:8px 10px;background:#fafafa;border:1px solid var(--line)}

        /* ══════════════════════════════════════════
           BANKA TİPLERİ KARŞILAŞTIRMASI
        ══════════════════════════════════════════ */

        .bank-tabs{
            display:grid;grid-template-columns:repeat(4,1fr);
            gap:0;border:1px solid var(--line);margin-bottom:0;
        }
        .bt-tab{
            padding:11px 6px;text-align:center;cursor:pointer;
            font-family:'Inter',sans-serif;font-size:10px;font-weight:500;color:var(--muted);
            border-right:1px solid var(--line);border-bottom:3px solid transparent;
            transition:all .15s;user-select:none;
        }
        .bt-tab:last-child{border-right:none}
        .bt-tab.active{background:#fff;color:var(--dark);border-bottom-color:var(--dark)}

        .bank-panel{border:1px solid var(--line);border-top:none;display:none;animation:fadeIn .15s ease}
        .bank-panel.visible{display:block}

        .bp-header{padding:16px 18px 12px;border-bottom:1px solid var(--line)}
        .bp-name{font-family:'Inter',sans-serif;font-size:14px;font-weight:600;color:var(--dark);margin-bottom:3px}
        .bp-desc{font-family:'Inter',sans-serif;font-size:12px;color:var(--muted);line-height:1.55}

        .bp-grid{
            display:grid;grid-template-columns:1fr 1fr 1fr;
            gap:1px;background:var(--line);
        }
        .bpg-cell{background:#fff;padding:13px 14px}
        .bpg-label{font-family:'Inter',sans-serif;font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--light);margin-bottom:6px}
        .bpg-val{font-family:'Inter',sans-serif;font-size:12px;font-weight:500;color:var(--dark);margin-bottom:3px}
        .bpg-sub{font-family:'Inter',sans-serif;font-size:10px;color:var(--muted)}

        .bp-income-bar{
            padding:12px 18px;border-top:1px solid var(--line);
        }
        .bib-label{font-family:'Inter',sans-serif;font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--light);margin-bottom:8px}
        .bib-track{height:20px;display:flex;border:1px solid var(--line);overflow:hidden;margin-bottom:4px}
        .bib-seg{height:100%}
        .bib-legend{display:flex;gap:12px;flex-wrap:wrap}
        .bib-leg{display:flex;align-items:center;gap:4px;font-family:'Inter',sans-serif;font-size:10px;color:var(--muted)}
        .bib-dot{width:8px;height:8px;flex-shrink:0}

        /* ══════════════════════════════════════════
           GELİR EROZYONU — maliyet kalemleri
        ══════════════════════════════════════════ */

        .pl-stack{margin:18px 0}
        .pl-row{
            display:flex;align-items:center;gap:0;
            border:1px solid var(--line);border-bottom:none;
            overflow:hidden;
        }
        .pl-row:last-child{border-bottom:1px solid var(--line)}
        .pl-stripe{width:4px;flex-shrink:0}
        .pl-content{flex:1;display:flex;align-items:center;gap:12px;padding:10px 14px}
        .pl-name{font-family:'Inter',sans-serif;font-size:12px;color:var(--text);flex:1}
        .pl-amount{font-family:'Inter',sans-serif;font-size:12px;font-weight:600;min-width:80px;text-align:right}
        .pl-note{font-family:'Inter',sans-serif;font-size:10px;color:var(--muted);min-width:90px;text-align:right}

        /* ══════════════════════════════════════════
           PAGE NAV
        ══════════════════════════════════════════ */
        .page-nav{display:flex;gap:12px;margin-top:36px}
        .page-nav-link{flex:1;border:1px solid var(--line);padding:14px 18px;text-decoration:none;transition:border-color .2s;display:flex;align-items:center}
        .page-nav-link:hover{border-color:var(--dark)}
        .page-nav-link.prev{justify-content:flex-start;gap:12px}
        .page-nav-link.next{justify-content:flex-end;gap:12px;text-align:right}
        .pnl-meta{flex:1}
        .pnl-label{font-family:'Inter',sans-serif;font-size:10px;color:var(--light);text-transform:uppercase;letter-spacing:.06em;margin-bottom:3px}
        .pnl-title{font-family:'Inter',sans-serif;font-size:13px;color:var(--dark)}
        .pnl-arrow{font-size:18px;color:var(--muted);flex-shrink:0}
        .footer{margin-top:44px;padding-top:18px;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}
            .divider{width:100%;height:1px}
            main{padding-left:0;padding-top:28px;max-width:100%}
            .pl-summary,.bp-grid{grid-template-columns:1fr 1fr}
            .bank-tabs{grid-template-columns:1fr 1fr}
            .iib-grid{grid-template-columns:1fr}
            .sl-row{grid-template-columns:110px 1fr 55px}
        }
    
        .skip-link{position:fixed;left:12px;top:12px;z-index:1000;padding:8px 12px;background:var(--dark);color:#fff;font-family:'Inter',sans-serif;font-size:12px;transform:translateY(-160%);transition:transform .15s}
        .skip-link:focus{transform:translateY(0)}
        :focus-visible{outline:3px solid var(--blue);outline-offset:3px}
        .review-strip{display:flex;flex-wrap:wrap;gap:7px 16px;margin:0 0 30px;padding:10px 12px;border:1px solid var(--line);background:#fafafa;font-family:'Inter',sans-serif;font-size:11px;line-height:1.5;color:var(--muted)}
        .review-strip strong{color:var(--dark)}
        .source-box{margin:46px 0 0;padding-top:18px;border-top:1px solid var(--line)}
        .source-box h2{font-size:15px;border:0;padding:0;margin-bottom:8px;text-transform:none}
        .source-box p{font-family:'Inter',sans-serif;font-size:11px;color:var(--muted);margin-bottom:9px}
        .source-box ul{display:flex;flex-wrap:wrap;gap:7px 16px;list-style:none}
        .source-box a{font-family:'Inter',sans-serif;font-size:11px;color:var(--blue);text-underline-offset:3px}
        [role="button"]{touch-action:manipulation}
        [aria-live="polite"]{contain:content}
        @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
        @media(max-width:768px){
            nav{padding-bottom:12px!important;border-bottom:1px solid var(--line)}
            nav .nav-sep{display:none!important}
            nav a{display:none!important}
            nav a[href="../index.html"],nav a[href="dsroadmap2.html"],nav a.nav-back,nav a.active{display:inline-block!important}
            table{width:100%;table-layout:fixed;font-size:11px}
            th,td{padding:7px 5px!important;overflow-wrap:anywhere;word-break:normal}
            .page-nav{flex-direction:column}
            .review-strip{margin-bottom:24px}
        }