:root{color-scheme:dark;--bg:#050d18;--panel:#0b1c2e;--line:#30465b;--ink:#edf3fa;--muted:#afc0d0;--accent:#05bffc;--mint:#85dfc5}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 'Segoe UI',Arial,sans-serif}main,header,footer{width:min(1320px,calc(100% - 48px));margin:auto}header{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}a{color:inherit}.brand{font-weight:700;font-size:26px;text-decoration:none}.brand span,h1 span{color:var(--accent)}header>a:last-child{font-size:14px;color:var(--muted)}h1{font-size:clamp(34px,4vw,55px);line-height:1.12;letter-spacing:-1.5px;margin:12px 0 20px}h2,h3,p{margin:0}.hero{padding:36px 0 28px}.eyebrow{font-size:12px;letter-spacing:.13em;color:var(--accent);text-transform:uppercase}.intro{max-width:700px;color:var(--muted)}button,select,input{font:inherit}button,select{min-height:44px;border:1px solid var(--line);border-radius:6px;padding:10px 14px;background:var(--panel);color:var(--ink)}button{cursor:pointer}button:hover{border-color:var(--accent)}button:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:4px}button.primary{background:var(--accent);color:#042135;font-weight:700;border-color:var(--accent)}.toolbar{display:flex;flex-wrap:wrap;align-items:end;gap:12px;margin-bottom:22px}.field{display:grid;gap:7px;font-size:14px}.toolbar .field{min-width:230px;flex:1;max-width:350px}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:22px}.side{min-width:0}.side h2{font-size:16px;display:flex;justify-content:space-between;gap:10px;margin-bottom:12px}.side h2 small{font-size:12px;font-weight:400;color:var(--muted)}.canvas{background:#112237;border:1px solid var(--line);padding:16px;border-radius:9px}.artboard{margin:0 0 14px}.artboard:last-child{margin:0}.artboard figcaption{font-size:12px;color:var(--muted);margin:0 0 8px}.artboard svg{display:block;width:100%;height:auto;background:#f7fafb;border-radius:4px}.artboard text{font-family:'Segoe UI',Tahoma,Arial,sans-serif}.artboard [data-moved=true]{outline:none}.feedback{margin:18px 0 10px;color:var(--mint);min-height:26px}.boundary{color:var(--muted);font-size:13px;margin-bottom:26px}.legend{font-size:13px;color:var(--muted);margin-top:12px}.legend b{color:var(--accent)}details{border-top:1px solid var(--line);margin-top:22px}summary{cursor:pointer;padding:16px 0;min-height:52px;font-weight:600}.settings{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;padding:6px 0 22px}.check{display:flex;gap:10px;align-items:center;min-height:44px;font-size:14px}.check input{width:18px;height:18px;accent-color:var(--accent)}.setting-note{font-size:13px;color:var(--muted);margin-top:9px}fieldset{border:1px solid var(--line);border-radius:8px;margin:8px 0 20px;padding:14px 18px}legend{padding:0 8px;font-size:14px}.selection{display:flex;flex-wrap:wrap;gap:4px 22px}.explain{display:grid;grid-template-columns:1fr 1fr;gap:30px;padding:0 0 24px}.explain h3{font-size:16px;margin-bottom:8px}.explain p{color:var(--muted);font-size:14px}.ledger{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:24px}.ledger th,.ledger td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:top}.ledger th{color:var(--muted);font-weight:400}.ledger td:last-child{color:var(--mint)}footer{border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:13px}.skip{position:absolute;left:12px;top:-90px;background:var(--bg);padding:12px}.skip:focus{top:8px}[hidden]{display:none!important}@media(max-width:700px){main,header,footer{width:calc(100% - 28px)}header{gap:12px}.comparison{grid-template-columns:1fr}.settings,.explain{grid-template-columns:1fr;gap:16px}.canvas{padding:10px}.toolbar .field{max-width:none;width:100%}.hero{padding:28px 0}h1{font-size:36px}.ledger{font-size:13px}.ledger th,.ledger td{padding:9px 5px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}