:root{--color-primary:#2563eb;--color-success:#16a34a;--color-warning:#d97706;--color-danger:#dc2626;--color-neutral:#6b7280;--color-text-primary:#1f2937;--color-text-secondary:#6b7280;--color-text-tertiary:#9ca3af;--color-border:#e5e7eb;--color-border-strong:#d1d5db;--color-bg-page:#f5f6fa;--color-bg-surface:#fff;--color-bg-hover:#f3f4f6;--color-focus:#2563eb;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--shadow-card:0 1px 2px #1018280a;--shadow-overlay:0 8px 24px #1018281f}body{background:var(--color-bg-page);color:var(--color-text-primary);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:14px;line-height:1.6}#root{min-height:100vh}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px;border-radius:var(--radius-sm)}code,.np-mono,pre{font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,Consolas,Liberation Mono,monospace;font-size:13px;line-height:1.45}.np-container{width:100%;padding:24px clamp(16px,3.5vw,48px) 32px}.np-app-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;display:grid}@media (width<=768px){.np-container{padding:16px 16px 24px}.np-app-grid{grid-template-columns:1fr}}.np-md{color:var(--color-text-primary);word-break:break-word;font-size:14px;line-height:1.8}.np-md h1{margin:20px 0 10px;font-size:22px}.np-md h2{border-bottom:1px solid var(--color-border);margin:22px 0 8px;padding-bottom:6px;font-size:18px}.np-md h3{margin:18px 0 6px;font-size:16px}.np-md h4{margin:14px 0 6px;font-size:14px}.np-md h1:first-child,.np-md h2:first-child{margin-top:0}.np-md p{margin:8px 0}.np-md ul,.np-md ol{margin:8px 0;padding-left:24px}.np-md li{margin:3px 0}.np-md blockquote{border-inline-start:3px solid var(--color-primary);background:var(--color-bg-hover);border-radius:var(--radius-sm);color:var(--color-text-secondary);margin:10px 0;padding:8px 14px}.np-md pre{color:#e2e8f0;border-radius:var(--radius-md);background:#0f172a;margin:10px 0;padding:12px 14px;overflow-x:auto}.np-md pre code{color:inherit;background:0 0;padding:0}.np-md code{background:var(--color-bg-hover);border:1px solid var(--color-border);border-radius:4px;padding:1px 5px}.np-md a{color:var(--color-primary)}.np-md hr{border:none;border-top:1px solid var(--color-border);margin:18px 0}.np-md-table-wrap{margin:10px 0;overflow-x:auto}.np-md table{border-collapse:collapse;width:100%;font-size:13px}.np-md th,.np-md td{border:1px solid var(--color-border);text-align:left;vertical-align:top;padding:6px 10px}.np-md th{background:var(--color-bg-hover);white-space:nowrap;font-weight:600}.np-skip-link{z-index:1000;background:var(--color-bg-surface);color:var(--color-primary);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:8px 16px;position:absolute;top:0;left:-9999px}.np-skip-link:focus{top:8px;left:8px}