:root{color-scheme:light;color:#10243e;font-synthesis:none;--ink:#10243e;--muted:#5e6d78;--line:#cfdbdf;--paper:#fff;--mist:#e9f0f1;--teal:#087f73;--teal-dark:#065e57;--yellow:#f4c44e;--coral:#e76f51;background:#f4f7f8;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{min-width:320px;margin:0}button,select,input{font:inherit}a{color:inherit}h1,h2,h3,p{margin-top:0}h1{letter-spacing:0;margin-bottom:22px;font-size:clamp(2.75rem,6vw,5.25rem);line-height:1.02}h2{letter-spacing:0;margin-bottom:16px;font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.14}h3{margin-bottom:6px;font-size:1rem}p{line-height:1.65}.content-shell,.topbar-inner,.site-footer{width:min(1180px,100% - 40px);margin-inline:auto}.topbar{z-index:20;backdrop-filter:blur(14px);background:#f4f7f8f0;border-bottom:1px solid #cfdbdfe6;position:sticky;top:0}.topbar-inner{justify-content:space-between;align-items:center;gap:28px;min-height:68px;display:flex}.brand{align-items:center;gap:11px;font-size:.94rem;font-weight:800;text-decoration:none;display:inline-flex}.brand-mark{background:var(--ink);width:34px;height:34px;color:var(--yellow);border-radius:6px;place-items:center;font-size:.78rem;display:grid}.nav-links{align-items:center;gap:26px;display:flex}.nav-links a{color:#43545f;font-size:.9rem;font-weight:700;text-decoration:none}.nav-links a:hover{color:var(--teal)}.hero-band{background:linear-gradient(120deg,#f4f7f8 0 58%,#dfeceb 58%);grid-template-columns:minmax(0,1.05fr) minmax(380px,.95fr);align-items:center;gap:64px;min-height:590px;padding:76px max(20px,50vw - 590px) 112px;display:grid}.hero-copy{max-width:690px}.eyebrow{color:var(--teal);text-transform:uppercase;margin-bottom:16px;font-size:.76rem;font-weight:850}.lede{color:#4e606c;max-width:720px;margin-bottom:0;font-size:1.1rem;line-height:1.72}.hero-meta{color:#43545f;flex-wrap:wrap;gap:10px 24px;margin-top:32px;font-size:.85rem;display:flex}.hero-meta span{align-items:baseline;gap:6px;display:inline-flex}.hero-meta b{color:var(--ink);font-size:1.15rem}.route-visual{background:#f9fbfb;border:1px solid #b8cacd;border-radius:8px;min-height:360px;position:relative;overflow:hidden;box-shadow:18px 20px #bdd3d0}.route-visual:before{content:"ROUTE PREVIEW";color:#6c7d86;font-size:.7rem;font-weight:900;position:absolute;top:22px;left:24px}.route-node{z-index:2;border:1px solid var(--line);background:#fff;border-radius:6px;width:145px;padding:15px;position:absolute;box-shadow:0 8px 24px #10243e14}.route-node small{color:#75848b;margin-bottom:6px;font-size:.61rem;font-weight:900;display:block}.route-node strong{font-size:.9rem}.node-a{top:78px;left:28px}.node-b{bottom:60px;left:28px}.node-c{border-left:4px solid var(--yellow);top:141px;left:50%;transform:translate(-50%)}.node-target{border-left:4px solid var(--coral);top:141px;right:25px}.route-line{z-index:1;transform-origin:0;background:#91aaa9;height:2px;position:absolute}.line-one{width:185px;top:151px;left:164px;transform:rotate(18deg)}.line-one:after{content:"";background:#91aaa9;width:190px;height:2px;position:absolute;top:89px;left:-3px;transform:rotate(-35deg)}.line-two{width:115px;top:181px;left:60%}.calculator-wrap{z-index:3;margin-top:-52px;position:relative}.workbench{border:1px solid var(--line);background:var(--paper);border-radius:8px;overflow:hidden;box-shadow:0 18px 50px #10243e1a}.workbench-head{justify-content:space-between;align-items:end;gap:24px;padding:30px 32px 22px;display:flex}.workbench-head h2{margin-bottom:8px;font-size:1.55rem}.workbench-head p{color:var(--muted);margin-bottom:0}.data-status{color:var(--teal-dark);background:#e3f1ef;border-radius:4px;flex:none;padding:8px 10px;font-size:.72rem;font-weight:800}.mode-tabs{border-bottom:1px solid var(--line);gap:3px;padding:0 32px;display:flex}.mode-tab{color:#60717b;cursor:pointer;background:0 0;border:0;border-bottom:3px solid #0000;min-height:44px;padding:0 17px;font-weight:800}.mode-tab.active{border-bottom-color:var(--teal);color:var(--ink)}.calculator-panel{padding:30px 32px}.calculator-panel.hidden{display:none}.parent-grid{grid-template-columns:minmax(180px,1fr) 34px minmax(180px,1fr) 34px minmax(220px,1.15fr);align-items:end;gap:12px;display:grid}label>span{margin-bottom:8px;font-size:.78rem;font-weight:800;display:block}select,input[type=number]{width:100%;min-height:48px;color:var(--ink);background:#fff;border:1px solid #b9c9ce;border-radius:5px;padding:0 38px 0 13px}select:focus,input:focus{border-color:var(--teal);outline:3px solid #087f7329}.combine-symbol{color:#718089;place-items:center;height:48px;font-size:1.25rem;font-weight:800;display:grid}.result-arrow{color:var(--teal)}.child-result{background:var(--ink);color:#fff;border-radius:6px;min-height:82px;padding:14px 16px}.child-result span,.child-result small{display:block}.child-result strong{color:#fff;margin:4px 0 5px;display:block}.child-result small{color:#b7c7d1;font-size:.72rem}.result-kicker{color:var(--yellow);font-size:.62rem;font-weight:900}.reverse-controls{align-items:end;gap:22px;display:flex}.reverse-controls>label:first-child{flex:1;max-width:520px}.owned-filter{align-items:center;gap:9px;min-height:48px;display:flex}.owned-filter input{width:18px;height:18px;accent-color:var(--teal)}.owned-filter span{margin:0}.pair-summary{color:var(--muted);margin:22px 0 12px;font-size:.85rem}.pair-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;max-height:480px;display:grid;overflow:auto}.pair-row{background:#fafcfc;border:1px solid #dbe3e5;border-radius:5px;grid-template-columns:1fr 20px 1fr;align-items:center;gap:7px;padding:12px;font-size:.78rem;display:grid}.pair-row b{text-align:center;color:var(--teal)}.pair-row small{color:#7a8991;margin-top:3px;display:block}.empty-state{color:var(--muted);border:1px dashed #b9c9ce;padding:24px}.workbench-foot{border-top:1px solid var(--line);background:#f2f6f6;justify-content:space-between;align-items:center;gap:24px;padding:18px 32px;display:flex}.workbench-foot p{color:var(--muted);margin:0;font-size:.84rem}.text-link{color:var(--teal-dark);white-space:nowrap;font-weight:850;text-decoration:none}.proof-band{background:var(--ink);color:#fff;margin-top:90px;padding:80px 0}.proof-grid{grid-template-columns:.8fr 1.2fr;align-items:start;gap:90px;display:grid}.proof-grid>div:first-child p:last-child{color:#b9c7d0}.feature-list{display:grid}.feature-list article{border-top:1px solid #354b63;grid-template-columns:50px 1fr;gap:16px;padding:23px 0;display:grid}.feature-list article:last-child{border-bottom:1px solid #354b63}.feature-list article>span{color:var(--yellow);font-weight:900}.feature-list p{color:#b9c7d0;margin:0}.faq-section{grid-template-columns:310px 1fr;gap:80px;padding-block:90px;display:grid}.faq-list details{border-top:1px solid var(--line)}.faq-list details:last-child{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;padding:20px 4px;font-weight:800}.faq-list p{color:var(--muted);margin:0;padding:0 4px 20px}.standalone-page{min-height:70vh;padding-block:68px 90px}.page-intro{max-width:780px;margin-bottom:38px}.page-intro h1{font-size:clamp(2.3rem,5vw,4.2rem)}.utility-layout{grid-template-columns:330px 1fr;align-items:start;gap:20px;display:grid}.panel{border:1px solid var(--line);background:var(--paper);border-radius:7px}.panel-head{border-bottom:1px solid var(--line);padding:22px}.panel-head h2{margin-bottom:6px;font-size:1.2rem}.panel-head p{color:var(--muted);margin:0;font-size:.84rem}.panel-body{padding:22px}.stack{gap:15px;display:grid}.button{border:1px solid var(--ink);background:var(--ink);color:#fff;cursor:pointer;border-radius:5px;justify-content:center;align-items:center;min-height:44px;padding:0 16px;font-weight:800;text-decoration:none;display:inline-flex}.button:hover{background:#1d3857}.button.secondary{color:var(--ink);background:#fff}.button.teal{border-color:var(--teal);background:var(--teal)}.button.small{min-height:36px;font-size:.78rem}.roster-list{flex-wrap:wrap;gap:7px;margin-top:14px;display:flex}.roster-chip{border:1px solid var(--line);background:#f7f9f9;border-radius:4px;align-items:center;gap:7px;padding:7px 9px;font-size:.72rem;display:inline-flex}.roster-chip button{color:#8b3f31;cursor:pointer;background:0 0;border:0}.route-result{min-height:240px}.route-step{border-bottom:1px solid var(--line);grid-template-columns:70px 1fr;gap:12px;padding:15px 0;display:grid}.route-step>span{color:var(--teal);font-size:.72rem;font-weight:900}.route-step p{margin:0}.notice{border-left:4px solid var(--yellow);color:#5f5533;background:#fff8df;padding:15px;font-size:.82rem}.mutation-grid{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.metric{border:1px solid var(--line);background:#f8fbfb;border-radius:6px;padding:20px}.metric span{color:var(--muted);font-size:.72rem;font-weight:800;display:block}.metric strong{margin-top:8px;font-size:1.65rem;display:block}.prose{max-width:780px}.prose h2{margin-top:42px;font-size:1.55rem}.prose p,.prose li{color:#4d5f6b;line-height:1.72}.site-footer{border-top:1px solid var(--line);color:var(--muted);justify-content:space-between;gap:40px;padding-block:40px;font-size:.78rem;display:flex}.site-footer p{margin:6px 0 0}.footer-links{align-items:center;gap:18px;display:flex}@media (width<=900px){.hero-band{background:#f4f7f8;grid-template-columns:1fr;min-height:auto;padding-top:56px}.route-visual{min-height:320px}.parent-grid{grid-template-columns:1fr 28px 1fr}.result-arrow{display:none}.child-result{grid-column:1/-1}.proof-grid,.faq-section{grid-template-columns:1fr;gap:42px}.utility-layout{grid-template-columns:1fr}}@media (width<=680px){.content-shell,.topbar-inner,.site-footer{width:min(100% - 24px,1180px)}.topbar-inner{min-height:60px}.brand span:last-child{display:none}.nav-links{gap:13px;overflow-x:auto}.nav-links a{flex:none;font-size:.76rem}h1{font-size:clamp(2.45rem,13vw,3.7rem)}.hero-band{padding-inline:12px;padding-bottom:86px}.hero-meta{gap:10px 16px}.route-visual{min-height:300px;box-shadow:8px 10px #bdd3d0}.route-node{width:115px;padding:11px}.node-a,.node-b{left:14px}.node-target{right:12px}.line-one,.line-two{opacity:.55}.calculator-wrap{margin-top:-38px}.workbench-head{padding:22px 18px 16px;display:grid}.data-status{width:fit-content}.mode-tabs{padding-inline:18px}.mode-tab{flex:1;padding-inline:8px;font-size:.76rem}.calculator-panel{padding:22px 18px}.parent-grid{grid-template-columns:1fr}.combine-symbol{height:22px}.reverse-controls{display:grid}.pair-list{grid-template-columns:1fr}.workbench-foot{padding-inline:18px;display:grid}.proof-band,.faq-section{margin-top:64px;padding-block:64px}.feature-list article{grid-template-columns:38px 1fr}.standalone-page{padding-block:44px 70px}.mutation-grid{grid-template-columns:1fr}.site-footer{display:grid}.footer-links{flex-wrap:wrap}}