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skills/open-kimi-ppt/reference/design_system/finance/ebony-ledger/design.md

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+# Ebony Ledger · Finance STYLE DESIGN SYSTEM
+
+**Full creative commitment**: apply your complete creativity and imagination, treating every page as an independent, complete design work worthy of scrutiny. Structure, composition, charts, imagery, and visual narrative must be content-driven — never fall back on default layouts.
+
+**No AI slop**: no low-judgment, templated, decoration-stacked AI default output, including unjustified card arrays, evenly split grids, gratuitous blue-purple gradients or glassmorphism, icon walls, hollow oversized type, repeated skeletons, and visual gimmicks unrelated to the content. Every page must show clear design judgment with a basis in the content.
+
+**Landscape delivery**: the final presentation is uniformly 16:9 landscape. Portrait or non-16:9 source material serves only as style observation and must be recomposed into 16:9 landscape — the original canvas ratio must not be carried over directly.
+
+**Layout coordination**: style.md governs the final style rules (fonts / colors / components / chart language / prohibitions); the "layout / visual task" line that query.md gives for each page governs that page's content structure, primary anchor, and reading order — both are binding execution specs. Layout intent follows the query task line first; final visuals follow style.md.
+### Global Prohibitions
+
+1. **No default cards**: unless the user explicitly requests it, never use rounded rectangles or rectangular cards to build hierarchy or alignment — containers that serve an information function (status lights, assumption boxes, quote frames) do not count as cards. Rules, whitespace, and differences in type size and weight are the better tools.
+2. **No evenly split compositions**: unless no other layout is truly available, do not default to three-way splits, four-way splits, or 2×2 matrices — even splits must be justified by content structure (three scenarios naturally take three columns; frameworks explicitly named by the content are exempt).
+3. **No unjustified AI color schemes**: institutional palettes specified in the content are exempt; what is banned are bland, common, unjustified default colors — blue-purple gradients, cyan-purple neon, rainbow flares, glass cards, glowing borders.
+4. **No elements that clash with the overall style**: nothing outside the style system may appear — for example, rounded icons or rounded rectangles in a sharp style.
+5. **Transparent chart backgrounds**: transparent or the page background color, except reverse-white treatments on dark grounds.
+6. **Avoid large blank areas**: keep reasonable density in the body area; padding out or diluting content into sparse pages is treated as a defect. Whitespace for breathing, grouping, and rhythm is allowed — form follows content; never stuff material in just to fill the page.
+
+## PART A — Category Baseline (universal floor)
+
+Institutional-grade investment research presentations, benchmarked against top-tier fund research reports, due diligence, and strategy outlooks (bulge-bracket bank and sovereign wealth fund standards). Chart-heavy, text-dense, more report-like than consulting decks: arguments are carried by Excel-style financial model tables (three-statement models, scenario analyses, sensitivity grids). Every number traceable, every assumption explicit, every conclusion actionable.
+
+Content and layout:
+1. Thesis-driven structure: deal decks run "Summary → Investment highlights → Target/Market → Business plan/Financial diagnostics → Valuation and returns → Risks and mitigants → Decision request"; research outlooks run "Core stance → Evidence → Scenario analysis → Allocation recommendation". The ending must land on an explicit decision or stance.
+2. Tables are the protagonist: valuation ranges, comparable companies, three financial statements, scenario analyses, sensitivity grids, with Excel financial-model row/column discipline (assumption columns, driver rows, and check rows clearly distinguished); charts serve the numbers (football-field valuation charts, IRR bridges, waterfall attributions, scenario fan charts) and are never decorative.
+3. High but ordered density: multi-column layouts with clear information hierarchy; each page answers one investment-committee question; density comes from evidence modules, not walls of text.
+
+Visual style:
+1. Aesthetic: restrained, authoritative, compliance-clean. No lifestyle photography, no decorative icons, no marketing superlatives.
+2. Typography: use serif for titles when institutional gravitas is needed; sans serif for table body text, chart labels, and all numerals; numbers are always column-aligned.
+3. Color: a conservative institutional palette — navy/charcoal structural colors, one restrained accent (e.g., gold or signal blue) reserved for key figures and recommended actions; positive/negative signs use one consistent red-green pair, expressing financial meaning only.
+4. Graphics: thin table rules, precise vector chart lines, fine connector lines on bridge charts; no 3D, no shadows, and gradient fills are not a routine chart language.
+
+Structure and discipline (distilled from the artifacts we consider benchmarks):
+1. Every body-page title must be a complete investment assertion (e.g., "This asset will reprice on capacity scarcity" — not "Market overview"), with a one-line subtitle stating scope and how to read the page.
+2. Every number carries unit, as-of date, and basis; estimates must be labeled (illustrative / internal estimate); no bare numbers.
+3. Returns are given only as scenario ranges (bear/base/bull, with probabilities or driving assumptions) — never a single-point IRR; any valuation conclusion must be paired with a sensitivity table.
+4. Assumptions must be made explicit in boxes, placed on the page where the conclusion depends on them; hidden assumptions are treated as defects.
+5. Risks and mitigants appear in pairs (risk → probability/impact → mitigant → owner/status); a page with risks but no mitigants is a defect.
+6. Valuation pages must be anchored: comparable companies, precedent transactions, or a DCF cross-check — a multiple without a reference set is not evidence.
+7. Parallel evidence runs in 2–3 equal-width columns; numbered arguments each carry a one-line bolded claim plus one short proof sentence.
+8. Chart annotation discipline: data labels attached to marks, bridge-chart connector blocks labeled block by block, forecast segments dashed, key drivers named inside the chart; charts may not rely on legends alone.
+9. The ending must land on a decision or stance: items submitted for decision (approve / reject / conditionally approve) or an explicit allocation stance (overweight / underweight / range), with a to-do list and timeline — never close with a thank-you page.
+
+Default baseline (distilled from the layout skill; PART B may override): numbers first — key metrics (amounts / growth rates / multiples) must be set larger than body text and presented standalone, immediately adjacent to unit and basis; keep at least one class of high-density financial table (three statements / comps / sensitivity), with right-aligned numbers, thousands separators, and negative-number conventions unified deck-wide; positive/negative semantic colors fixed — up/positive and down/negative each use one fixed color that never changes across the deck; forecast and history must be visually distinguishable (dashes / light tints / hatched bands) and labeled with the basis; every page carries source, basis, and time range in small gray type at the page bottom — numbers without sources are not allowed in the main visual area; a single temperament per deck (dark navy/charcoal with metallic accents OR traditional white ground with blue-gray) — pick one per deck.
+
+Density anchor: each style's specific floor (evidence modules per page, chart count, annotation habits) follows the 【Density Baseline】 reverse-engineered from that style's source material — this baseline imposes no uniform numbers.
+
+
+## PART B — Signature System (this template's signature; where it conflicts with PART A, this section governs)
+
+One-line style signature: a calm institutional-annual temperament — pure white ground with a black skeleton, teal-green data, and terracotta conclusions; medium-high density that retains magazine-like breathing room.
+
+【Color Palette】 Background #FFFFFF; primary body text and headings #000000 — black carries only text, baselines, and the top bar. Primary accent #4C9F8B for current values, main scenarios, or winning items, occupying no more than one-third of any single chart. Supporting #1B5E5C for secondary series or starting values. Conclusion color #A95228 reserved for multipliers, arrows, and short vertical ticks — never large color blocks. Structural gray #CACED7 for historical values; light gray #E4E4E4 for annotation plates and range bands. Chart series pick from #4C9F8B, #1B5E5C, #CACED7, #C39D78; when positive/negative encoding is truly needed, positive is #4C9F8B and negative is #C39D78 — #A95228 does not mean negative. At most two colored hue families per page; the iron rule is that the accent must never blanket the page.
+
+【Layout Skeleton】 Source facts: 612×792 US Letter portrait, 17:22; wide, stable margins on all four sides; a black horizontal rule placed inset at the top of the page, about 80% of page width. Body is single-column or 48:48 two-column with narrow, stable gutters; reading runs top-to-bottom, left-to-right. No navigation or breadcrumbs; the footer pairs a short running title at left with a thin vertical rule and page number at right. Overriding PART A: section pages may use the theme name as the main title, with the assertion demoted to a weaker subtitle; continuation pages may omit the page title and open with the chart head instead. Cover only: the top rule's left end is indented to about 31% of page width, the title uses two levels of serif, and the lower half page carries a key-point list marked by terracotta vertical ticks. 16:9 migration: unify finally to 16:9 landscape, keep the top bar, left alignment, and two columns, and recompose vertical chart groups into 5:7 or 6:6; the title area takes 14%–17%, the body area about 76%, the footer about 5%; long passages must be restructured.
+
+【Typography】 Source facts: headings use the embedded serif SanomatTT-Light, with key numerals occasionally in its Medium/Semibold; body, legends, axis labels, and footers use the sans serif GuardianSansTT-Light, with labels in Medium/Regular. Page titles sit clearly above paragraph heads and chart titles but stay restrained overall; chart titles and paragraph heads are only slightly stronger than body. Key numerals may be raised to title level or slightly above when a conclusion genuinely needs focus; footnotes, axis labels, and footers recede noticeably. Conclusion numerals use serif; ordinary data labels use sans serif. Render with {latin: Unna, ea: 思源宋体} (serif titles and conclusion numerals) and {latin: Liter, ea: MiSans} (sans body/labels). In 16:9 landscape, keep the light weights and this relative hierarchy — do not carry over the source's absolute sizes or ratios.
+
+【Chart Language】 Actually used: horizontal ranking bars, standard/positive-negative/stacked columns, line charts, donut charts, big-vs-small circle comparisons, benchmark dashes, and range bands; tables are not used — when financial tables are required, inherit PART A. ⭐ Historical bars are gray; current or main-scenario bars are teal-green; discrete bars carry direct value labels. ⭐ Change conclusions use large terracotta multipliers with black slanted arrows or brackets — at most once per chart. ⭐ Line charts label only endpoints, turning points, or comparison conclusions. ⭐ Forecast increments use teal-green dashed outlines; recession periods or explanatory zones use light-gray rectangular bands. ⭐ Parallel evidence may form a 2×2 small-chart matrix, each chart keeping its own chart number, serif chart title, and basis line.
+
+【Signature Components】 Thick black top bar: the header anchor, once per page, hugging the top margin only. Three-layer chart head: sans-serif medium-black chart number + serif chart title + small basis line — once per chart. Terracotta conclusion multiplier: extracts the magnitude of change, at most once per chart and twice per page, placed right next to the arrow or bracket. Light-gray evidence plate: carries benchmarks or summaries, 0–2 per page, hugging chart edges only. Minimal footer: short running title and page number at opposite ends, once per page.
+
+【Prohibited】 No dark full-bleed pages, dark section pages, or large teal-green backgrounds; no replacing teal-green with navy or bright blue; no heavy sans-serif page titles; no treating #A95228 as a negative-warning color; no colored blocks without data meaning and no more than four series colors. Use photos / illustrations cautiously, never as backgrounds.
+
+【Slide Types and Layouts】 Single-column argument + main chart ｜ one thesis with one core piece of evidence ｜ upper argument ~30%, middle main chart ~45%, lower explanation ~25% ｜ 3–4 blocks ｜ top bar, three-layer chart head, current value in teal-green ｜ not suited to four parallel conclusions.
+Staggered two-column text-image ｜ two sets of evidence explaining each other ｜ ~48:48 two columns, vertical offset allowed ｜ 4–6 blocks ｜ terracotta multipliers, light-gray evidence plates ｜ not suited to continuous long text.
+Multi-chart evidence board ｜ cross-validating one conclusion from multiple angles ｜ title and intro ~20%, body is a 2×2 or one-large-two-small chart group ｜ 4–6 blocks, 2–4 charts ｜ independent chart heads, direct value labels ｜ not suited to a single complex causal chain.
+Section opening page ｜ opening an asset or theme section ｜ title ~12%, stance and background ~28%, evidence area ~60% ｜ 3–5 blocks ｜ top bar, large serif title, 1–2 charts ｜ not suited to slogans only.
+Pure-argument closing page (occasional) ｜ summarizing a stance or disclosing boundaries ｜ single column of 3–4 paragraphs, ~80% wide ｜ 2–4 blocks ｜ top bar and footer only ｜ not suited to number-dense topics.
+
+【Density Baseline】 Source body pages carry about 230–438 English words, 3–6 evidence modules, 1–4 charts; narrative pages 300–440 words with 0–2 charts; multi-chart pages 230–350 words with 2–4 charts. For 16:9 multi-chart pages, recommend 3–5 modules, 2–4 charts, and 1–2 explanation blocks of 35–70 words/characters equivalent each; narrative pages use 2–4 text blocks of 60–100 words/characters equivalent each, with 0–1 chart. Discrete bars each carry a value label; line charts mark only key points. Place whitespace after titles, between chart groups, and above the footer. No uniform hard floor across page types.