:root{color-scheme:dark;--bg:#081923;--panel:#102832;--line:#36515a;--ink:#ecede2;--muted:#a9c2c2;--mint:#b8dfd1;--gold:#e4bf82;font:16px 'DM Sans',system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}a{color:var(--mint);text-decoration:none}a:hover{text-decoration:underline}button,input,select{font:inherit}button,select{min-height:44px;color:var(--ink);background:#122e39;border:1px solid var(--line);border-radius:7px}button{cursor:pointer;padding:8px 13px}button:hover{border-color:var(--mint);background:#1b3d45}button:disabled{opacity:.4;cursor:default}button[aria-pressed=true]{background:var(--mint);border-color:var(--mint);color:#10292f}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--gold);outline-offset:4px}[hidden]{display:none!important}.skip{position:absolute;left:14px;top:-60px;padding:12px;background:var(--panel);z-index:10}.skip:focus{top:12px}header,footer{max-width:1600px;margin:auto;padding:24px 4%;display:flex;justify-content:space-between;align-items:center;gap:24px}header{border-bottom:1px solid var(--line)}.brand{font-size:14px;color:var(--ink);letter-spacing:.12em;white-space:nowrap}.brand b{font-weight:800}nav{display:flex;gap:26px;font-size:14px}main{max-width:1600px;margin:auto;padding:0 4% 55px}.eyebrow{font-size:11px;color:var(--gold);letter-spacing:.16em;font-weight:650}.explorer-intro{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:35px;align-items:center;padding:42px 0 30px}.explorer-intro h1{font:400 clamp(30px,3.2vw,48px)/1.15 Georgia,serif;margin:12px 0}.explorer-intro p{font-size:15px;line-height:1.7;max-width:880px;color:var(--muted);margin:0}.source-actions{display:grid;gap:14px;font-size:14px}.source-actions a:first-child{padding:12px 15px;border:1px solid #5e8179;border-radius:6px;color:var(--ink)}#explorer-status:empty{display:none}#explorer-status{background:#16343c;padding:14px 18px;line-height:1.6;border-left:2px solid var(--gold)}.diagram-workspace{display:grid;grid-template-columns:minmax(0,1fr) 330px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel)}.visual-panel{min-width:0;background:radial-gradient(ellipse at 45% 48%,#193d47,#0a202b 72%);display:flex;flex-direction:column}.visual-top{padding:21px 24px 10px;display:flex;align-items:center;justify-content:space-between;gap:12px}.illustration-badge{font-size:9px;letter-spacing:.1em;color:#a1b8b8;border:1px solid #3d5e61;border-radius:20px;padding:6px 9px}.diagram-canvas{margin:auto 0;min-width:0}.diagram-canvas svg{width:100%;height:auto;display:block}.diagram-summary{min-height:68px;margin:0;padding:18px 24px;color:#d1e2d9;font-size:14px;line-height:1.7;border-top:1px solid #36515a80}.step-navigation{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:0 24px 20px}.step-navigation span{font-size:12px;color:var(--muted)}.step-navigation button{font-size:13px}.controls-panel{padding:24px;border-left:1px solid var(--line)}.field-label{font-size:10px;color:var(--gold);letter-spacing:.13em;display:block;margin-bottom:10px}select{width:100%;padding:10px 9px;font-size:13px;max-width:100%}.control-heading{margin:25px 0 16px;display:flex;align-items:center;justify-content:space-between;gap:10px}.control-heading h2{font-size:17px;font-weight:500;margin:0}.control-heading button{font-size:12px;min-height:34px;padding:6px 10px}.diagram-control{margin:18px 0 22px}.diagram-control label{display:flex;justify-content:space-between;gap:10px;font-size:13px;line-height:1.5;margin-bottom:10px}.diagram-control output{white-space:nowrap;color:var(--gold);font-variant-numeric:tabular-nums}input[type=range]{width:100%;min-height:28px;accent-color:var(--mint);cursor:pointer;margin:0}.diagram-steps{display:flex;gap:8px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:20px;margin-top:23px}.diagram-steps button{width:39px;min-height:39px;padding:5px;font-size:13px}.step-detail h3{font:400 24px/1.25 Georgia,serif;margin:20px 0 9px}.step-detail p{font-size:13px;line-height:1.75;color:var(--muted);margin:0}.source-note{display:grid;grid-template-columns:1fr 2fr;gap:40px;padding:25px 0;border-bottom:1px solid var(--line)}.source-note h2{font-size:15px;font-weight:500;margin:0 0 8px}.source-note p{font-size:13px;line-height:1.7;color:var(--muted);margin:8px 0 0}.library{padding-top:42px}.library-heading h2{font:400 30px/1.2 Georgia,serif;margin:10px 0}.library-heading p{font-size:14px;line-height:1.7;color:var(--muted)}.library-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px}.library-card{display:flex;flex-direction:column;gap:9px;padding:20px;border:1px solid var(--line);border-radius:8px;background:#0e2630}.library-card:hover{border-color:var(--mint);text-decoration:none;background:#15333b}.library-card[aria-current=true]{border-color:var(--mint)}.library-card strong{font:400 20px/1.3 Georgia,serif;color:var(--ink)}.library-card span{font-size:11px;color:var(--muted);line-height:1.5}.library-card b{font-size:10px;color:var(--gold);letter-spacing:.1em;font-weight:500}footer{border-top:1px solid var(--line);font-size:12px;color:var(--muted);flex-wrap:wrap}.notice{padding:25px;background:var(--panel)}
@media(max-width:1050px){.diagram-workspace{grid-template-columns:minmax(0,1fr) 290px}.controls-panel{padding:20px}.visual-top{padding:18px}.illustration-badge{display:none}.diagram-summary{padding:17px 18px}.step-navigation{padding:0 18px 18px}.library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){header{padding:20px 5%;align-items:flex-start}nav{gap:8px;flex-direction:column;font-size:12px;text-align:right}main{padding:0 5% 35px}.explorer-intro{grid-template-columns:1fr;padding:28px 0 24px;gap:18px}.source-actions{display:flex;flex-wrap:wrap;align-items:center;gap:15px}.source-actions a{font-size:12px}.source-actions a:first-child{padding:9px 12px}.explorer-intro p{font-size:14px}.diagram-workspace{grid-template-columns:1fr}.controls-panel{border-left:0;border-top:1px solid var(--line);padding:21px}.visual-top{padding:18px 15px 10px}.diagram-summary{font-size:13px;min-height:0;padding:15px}.step-navigation{padding:0 15px 16px}.source-note{grid-template-columns:1fr;gap:18px;padding:23px 0}.library-grid{grid-template-columns:1fr}.library-card{padding:18px}.diagram-canvas{overflow-x:auto}.diagram-canvas svg{min-width:620px}.diagram-canvas::after{content:'Swipe the illustration sideways for a closer look';display:block;font-size:10px;color:var(--muted);padding:4px 15px 12px}.library-heading h2{font-size:27px}footer{padding:25px 5%}}
@media print{nav,.controls-panel,.step-navigation,.library,footer{display:none}.diagram-workspace{display:block}.visual-panel{break-inside:avoid}.diagram-canvas svg{min-width:0}body{print-color-adjust:exact}}

.diagram-canvas:focus-visible{outline:2px solid var(--gold);outline-offset:-3px}