:root{--bg:#f7f8fb;--surface:#ffffff;--surface-strong:#eff4f2;--ink:#18211f;--muted:#64706d;--line:#dde5e2;--accent:#087f6f;--accent-strong:#05695b;--warning:#b46b05;--danger:#b42318;--success:#157f3c;--shadow:0 10px 30px rgba(20,33,31,0.08)}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}.shell{display:grid;grid-template-columns:250px minmax(0,1fr);min-height:100vh}.sidebar{position:-webkit-sticky;position:sticky;top:0;height:100vh;padding:28px 22px;background:#10201d;color:#f7fbfa;display:flex;flex-direction:column;gap:36px}.brand-kicker,.eyebrow{margin:0 0 6px;color:#7ab7ac;font-size:12px;font-weight:700;letter-spacing:0;text-transform:uppercase}.sidebar h1{margin:0;font-size:26px;line-height:1.1}.sidebar nav{display:grid;grid-gap:8px;gap:8px}.sidebar nav a{border-radius:8px;color:#dbe8e5;font-weight:700;padding:12px 14px}.sidebar nav 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