:root{--cyan: #22d3ee;--violet: #a78bfa;--magenta: #f472b6;--ink: #dbe3f4;--muted: #7c88a6}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:radial-gradient(circle at 50% 32%,#10141f,#080a11 55%,#05060b);color:var(--ink);font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:12px}#scene{display:block;width:100%;height:100%}.panel{position:fixed;background:#1115208c;backdrop-filter:blur(14px) saturate(1.2);-webkit-backdrop-filter:blur(14px) saturate(1.2);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:12px 14px;line-height:1.65;letter-spacing:.02em;user-select:none}#hud{top:16px;left:16px;min-width:268px}#keys{bottom:16px;left:16px;color:var(--muted)}.keys-title{color:var(--violet);margin-bottom:4px}#keys b{color:var(--ink);font-weight:600}.section{margin:2px 0 4px;font-weight:600}.section.measured{color:var(--cyan)}.section.structural{color:var(--violet);margin-top:12px}.row{display:flex;justify-content:space-between;gap:18px}.row .k{color:var(--muted)}.measured .v,.row.m .v{color:var(--cyan)}.row.s .v{color:var(--violet)}.warn{margin-top:10px;color:var(--magenta)}