:root{--bg:#f5f7fa;--card:#fff;--primary:#2563eb;--text:#1f2937;--text-light:#6b7280;--border:#e5e7eb}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--primary);text-decoration:none}.container{max-width:1080px;margin:0 auto;padding:24px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px}.grid{display:grid;grid-gap:16px;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.btn{display:inline-block;background:var(--primary);color:#fff;padding:10px 18px;border-radius:8px;font-weight:600}.muted{color:var(--text-light);font-size:14px}.stat{font-size:32px;font-weight:700}