:root{--bg:#f7f9fc;--bg-soft:#f6f5f1;--surface:#fff;--ink:#0a0a0a;--ink-2:#1c1c1c;--muted:#6b6b6b;--muted-2:#9a9a9a;--hairline:#ebebe6;--hairline-strong:#d9d9d3;--primary:#5b57d6;--primary-hover:#4945c0;--primary-soft:#e8e8fe;--primary-text:#4945c0;--accent:var(--primary);--accent-soft:rgba(91,87,214,0.10);--radius:14px;--radius-sm:8px;--radius-lg:20px;--shadow-sm:0 1px 2px rgba(10,10,10,0.04),0 1px 1px rgba(10,10,10,0.03);--shadow-md:0 8px 24px -8px rgba(10,10,10,0.10),0 2px 6px -2px rgba(10,10,10,0.05);--mono:ui-monospace,"SF Mono","Menlo","Consolas",monospace;--danger:#dc2626;--warn-bg:#fff7e6;--warn-fg:#8a5a00;--warn-border:#f1d28b;--err-bg:#fdf3f3;--err-fg:#cf2e2e;--err-border:#f3c4c4;--ok-bg:#f1faf3;--ok-fg:#1d6e2e;--ok-border:#c4ebcf}*{box-sizing:border-box}body,html{margin:0;padding:0}body{min-height:100vh;display:flex;flex-direction:column;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft 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