:root{--bg:#f4f6f8;--surface:#fff;--surface-muted:#eef2f6;--border:#d8e0e8;--border-strong:#b6c2cf;--text:#16212e;--text-muted:#5b6978;--primary:#1d3557;--primary-strong:#14263f;--accent:#315d8a;--success:#2a6f55;--warning:#9a6b1e;--danger:#a43d3d;--shadow:0 8px 24px #1121370f;--radius:14px}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:Inter,Segoe UI,Arial,sans-serif}body{min-height:100vh}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}.app-shell{min-height:100vh}.topbar{border-bottom:1px solid var(--border);background:var(--surface);z-index:10;position:sticky;top:0}.topbar-inner{justify-content:space-between;align-items:center;gap:16px;max-width:1200px;margin:0 auto;padding:16px 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