:root{
--bg:#ffffff; --ink:#1a1a1a;
--card-bg:#f8f9fa; --border:#e5e7eb;
--accent:#3b82f6; --accent-hover:#2563eb;
--radius:8px; --radius-sm:5px;
--shadow:0 1px 2px rgba(0,0,0,0.08);
--shadow-md:0 2px 4px rgba(0,0,0,0.08);
}