:root{--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--paper:#f1f5f9;--panel:#fff;--accent:#2563eb;--accent-deep:#1d4ed8;--accent-soft:#eff6ff;--danger:#dc2626;--radius:16px;--shadow:0 18px 50px rgba(15,23,42,.08)}*{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--ink);background:radial-gradient(circle at top left,rgba(37,99,235,.12),transparent 28%),linear-gradient(180deg,#0b1220,#111827 42%,#0f172a);font-family:Plus Jakarta Sans,system-ui,sans-serif}button,input,select,textarea{font:inherit}.shell{display:grid;grid-template-columns:232px 1fr;min-height:100vh}.sidebar{display:flex;flex-direction:column;gap:28px;padding:28px 18px;border-right:1px solid hsla(0,0%,100%,.08);background:rgba(8,15,30,.72);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:#fff}.brand{display:flex;align-items:center;gap:12px;padding:0 8px}.brand-mark{width:34px;height:34px;border-radius:8px;object-fit:cover;display:block;flex-shrink:0;background:#000}.brand 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