:root{--navy: #1e2d3d;--blue: #3b82c4;--gold: #e09d40;--surface: #f0f2f5;--bg: #ffffff;--border: #e2e6ea;--text: #1e2d3d;--muted: #6b7c93;--radius: 6px}*{box-sizing:border-box}body.modal-open{overflow:hidden}body{background:var(--surface);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:14px;line-height:1.5;margin:0;min-width:320px}.app-topbar{background:var(--navy);border-bottom:2px solid var(--gold);position:sticky;top:0;z-index:100}.topbar-inner{align-items:center;display:flex;height:48px;padding:0 20px}.brand-mark{align-items:center;color:#fff;display:inline-flex;flex-shrink:0;font-size:14px;font-weight:700;gap:8px;letter-spacing:.3px;margin-right:24px;text-decoration:none}.brand-icon{background:var(--gold);border-radius:4px;display:grid;height:28px;place-items:center;width:28px;font-size:13px}.topnav{align-items:stretch;display:flex;flex:1;gap:0;height:100%}.topnav-link{align-items:center;border-bottom:2px solid 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