:root{--bg:#f4f6f8;--panel:#fff;--ink:#1e293b;--muted:#5b677a;--line:#dce2ea;--blue:#315bd4;--soft:#edf2ff;--good:#eaf5ed;--warn:#fff3dc}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:20px}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}header{background:#fff;border-bottom:1px solid var(--line);display:flex;gap:25px;align-items:center;padding:19px 32px}header form{margin-left:auto}.brand{font-size:19px;color:var(--ink);font-weight:600;text-decoration:none}nav{display:flex;gap:20px;flex-wrap:wrap;padding:13px 32px;background:#fff;border-bottom:1px solid var(--line)}nav a{font-size:13px;text-decoration:none;color:var(--muted)}nav a:hover{color:var(--blue)}main{max-width:1600px;margin:auto;padding:30px 32px 65px;min-height:75vh}h1{font-size:27px;line-height:1.3;letter-spacing:-.5px;font-weight:550;margin:0 0 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1fr;gap:15px;background:var(--soft);padding:16px;border-radius:7px}.code-view{background:white;border:1px solid var(--line);border-radius:8px;overflow:auto;margin-top:20px;font:12px/1.9 ui-monospace,monospace}.code-line{display:flex;white-space:pre;min-width:max-content;padding-right:20px}.code-line>a{display:inline-block;min-width:65px;padding:0 15px;text-align:right;color:#7e8b9c;text-decoration:none;user-select:none}.code-line code{white-space:pre;overflow-wrap:normal}.highlight{background:#edf2ff}.code-line:target{outline:1px solid var(--blue)}footer{border-top:1px solid var(--line);padding:20px 32px;color:var(--muted);font-size:12px}section{scroll-margin-top:15px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--blue);outline-offset:3px}@media(max-width:850px){main{padding:20px 15px}header{padding:15px;flex-wrap:wrap;gap:8px}header .muted{display:none}nav{padding:12px 15px;gap:12px}.grid,.pair{grid-template-columns:1fr}.criteria-grid{grid-template-columns:1fr}.heading{display:block}h1{font-size:23px}.metrics{gap:18px}.panel{padding:16px}th,td{padding:10px}}