body { font-family: Arial, sans-serif; margin: 0; padding: 0; background: #fafafa; }
.sdt-layout-grid { width: 100%; max-width: 1200px; margin: 0 auto; border-collapse: collapse; }
.sdt-header-row { background: #1a1a1a; color: white; }
.sdt-header-cell { padding: 20px; }
.sdt-logo { font-size: 24px; font-weight: bold; }
.sdt-nav-table { float: right; }
.sdt-nav-item { padding: 0 10px; }
.sdt-nav-item a { color: white; text-decoration: none; }
.sdt-main-row { background: white; }
.sdt-content-cell { padding: 40px; vertical-align: top; width: 75%; }
.sdt-sidebar-cell { padding: 20px; vertical-align: top; background: #f0f0f0; width: 25%; }
.sdt-sidebar-table { width: 100%; border-collapse: collapse; }
.sdt-sidebar-header { font-weight: bold; padding-top: 15px; border-bottom: 2px solid #ccc; }
.sdt-sidebar-link { padding: 5px 0; }
.sdt-sidebar-link a { color: #333; text-decoration: none; }
.sdt-footer-row { background: #333; color: white; text-align: center; }
.sdt-footer-cell { padding: 20px; }
h1, h2, h3 { color: #222; }
p { line-height: 1.6; color: #444; }