Chart Prompts

Restyle my chart in the "Quarterly Letter" style described below. Keep my data, chart type, title meaning and units; change only the presentation. Use the charting library this project already uses (plain SVG if there is none). If the library can't express a detail, draw it in a custom layer instead of dropping it. Measurements assume a 960 x 600 chart; scale them proportionally.

Mood: a page from an investment fund's quarterly letter to its investors, printed on cream laid paper. Quiet, literate and trustworthy: one typeface, a letterhead, footnote markers and a small-print disclaimer. It should read like a document, not a dashboard.

Colors (use these exact values):
- Paper: #F6F0E1 (cream), with faint horizontal chain lines in #E6DCC6 (0.8px, every 22px, at 70% opacity) and a very soft radial vignette toward #C9B994 at 22% opacity in the corners.
- Primary series (the fund, or my main series): #1F3358 (ink navy).
- Comparison series (benchmark, or my second series): #9A8F80 (warm gray).
- Body ink for the title, rules and reference line: #2B2722. Secondary text: #6F665A. Dotted gridlines: #CFC3AA.

Typography (Google Fonts):
- EB Garamond for everything, with old-style figures (font-variant-numeric: oldstyle-nums).
- Letterhead: fund or organisation name 15px 600 in small caps with 2.4px letter-spacing, navy, left; the document name ("Letter to Investors, Second Quarter 2026") 15px italic #6F665A, right.
- Title 33px 500 #2B2722, sentence case, stating the finding, ending with a superscript asterisk (21px, raised 12px, navy) that points to a footnote.
- Subtitle 19px italic #6F665A with measure, unit, base date and frequency, ending with a superscript dagger (13px, raised 7px).
- Axis labels 15px #6F665A; direct labels 16px 600 (name) over 15px regular (value), in each series' color; marginal notes 14px italic #6F665A; footnotes 12px #6F665A; disclaimer 12px italic.

Layout:
- 64px side margins. Letterhead at the top, then a double rule under it: 0.9px and 0.4px lines in #2B2722, 3.5px apart.
- Title, subtitle, then the chart from about x 96 to x 736, leaving the right 160px for direct end labels.
- Bottom: a short 136px 0.6px rule (a footnote separator), then the asterisk and dagger footnotes (one line each), then a two-line italic disclaimer paragraph ("Past performance is not a reliable indicator of future results...") with a small page number at the far right. The source ("Source: ...") sits inside the first footnote.

Axes and grid:
- Y labels at left, right-aligned, no axis line. Gridlines 0.6px #CFC3AA dotted (1 on, 3 off).
- For index charts: a solid 0.8px #2B2722 reference line at the base value (100), with its label "100" in 600 weight ink.
- A 0.9px ink baseline with 5px year ticks and year labels 24px below.

Marks:
- Line chart: straight segments, round joins. Primary line 2.6px navy, comparison line 2px warm gray, drawn beneath. When series are rebased to 100, both start from one shared inception dot: a 5.5px cream circle with a 1.4px ink ring and a 2px ink center, labelled "100". Small end dots (r 4 navy, r 3.5 gray) and direct labels to the right: name, then "169.8, 5.9% a year" style value. No legend.
- Bar chart: slim square-cornered navy bars (about 45% of the band) with the comparison, if any, as a warm gray bar just behind or beside; value labels above in 15px old-style figures; the same letterhead, footnotes and disclaimer apply.

Labels and annotation:
- At most one marginal note: a 0.7px #6F665A vertical leader from the event to two lines of 14px italic text ("The Fund fell 8.8% in the first quarter of 2020, against 14.1% for the benchmark"), computed from the data.

Avoid: sans-serif type, lining figures, bold colors, fills under the lines, shadows, gradients on marks, rounded corners and a boxed legend.

When you're done, render the chart and check that the figures are old-style, the footnote markers match their footnotes, every stated return and annualized rate is arithmetically right, and the end labels don't touch each other or the page edge.