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workbuddy_skills/open-design/design-systems/arc/DESIGN.md
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admin 5afeb6b78a ④段整套同步（六节 ＋ P/S/F/J ＋ 模板）＋ open-design 移到技能根 
一、④段整套同步（用户选候选 A）
- 新增 `references/stage-proto-doc/assets/产品文档模板.html`（16 KB／247 行，从备份拷、转 LF）。
- ④段 SKILL.md 换成备份 15:28 那版，并按模板口径改齐：
  · 「产品文档框架」从「四块＋一附录」改成**六节** —— 页面结构／功能清单／使用场景／操作流程／
    跨页与界面状态／待确认与偏离；与模板同构，⛔ 不从空白页重写结构。
  · 编号从 R/S/F 改成 **P 页面／S 场景／F 功能／J 二级功能**，各自唯一、按展示顺序通排。
  · 保留旧版有价值的要求：每项功能补齐 做什么／入口在哪／输入边界／异常与恢复；重点功能三处标红；
    横向流程图每步写清页面／功能／操作／完成判据。
  · 完成标准「七节」→「六节」，自查清单同步换掉「需求」那批条目，补模板与配图两条。
  · 路径 `designs/<项目>/` → `docs/pm/<项目>/ui/`（2 处）。
  · 补回本机那条「每份产出文档开头都要有一张图」的引用（指向主 skill，段内不复述）。
- 主 skill 同步：四段结构表④行、④段沿革、画图小节（④段画页面结构图 ＋ 用户路径）。

二、open-design 移到技能根（用户选候选 A）
- `git mv product-planning/references/stage-delivery/assets/open-design → open-design/`（4178 文件）。
- `.gitignore` 白名单加 `!/open-design/` —— 否则移出去就不再纳入版本控制。
- 引用改 11 处：路径形态 `assets/open-design/...` → `<技能根>/open-design/...`；
  「随段携带的自带件」改称「同根技能」；「路径怎么找」那条改成自带件（段内相对路径）与
  同根技能（`<技能根>/<技能名>/`）两类分开写。
- open-design 自己的 ATTRIBUTION.md 两处同步（它现在与 oil-ui-pro 同层）。
- 副作用（有益）：命名闸门读数由 2063 降到 225 —— 此前它把 open-design 里 919 个第三方 md
  当成规则一起扫了；现在只扫本包 23 个 md。已确认④段的 H1 与 4a/4b/4c 子步仍在检查范围内。

三、验收
- check_naming.py --ws E:/ProgramData/AIProject/contentm_agent ＝ 通过 225 / 失败 0 / 提示 27。
- 活文件里 `assets/open-design` 残留 0；工作区 CRLF 文件 0。
2026-10-15 21:17:28 +08:00

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Design System Inspired by Arc Browser

Category: Productivity & SaaS "The browser that browses for you." Translucent surfaces, gradient warmth, sidebar-first layout.

1. Visual Theme & Atmosphere

Arc Browser dissolves the boundary between the chrome and the page. Where Chrome and Safari treat the browser frame as a container, Arc treats it as scenery — the toolbar fades into the system wallpaper, the sidebar carries gradient warmth from the user's chosen "theme color", and translucency is everywhere. The visual signature is frosted glass plus a single saturated gradient — most often a peach-to-coral or violet-to-fuchsia bloom — that sets the emotional temperature of the entire window.

Typography uses Inter for chrome and a custom display serif (Argent CF or similar) for marketing — when Arc speaks publicly it speaks editorially, in a serif voice unusual for tech. The product itself is sans-only, with tight tracking and generous line-height.

Shapes are squircle-soft: 12–16px radii on cards, 8px on tabs, 9999px pills for tags. Borders are rare — Arc prefers tinted background washes (rgba(255, 255, 255, 0.5) over the gradient) to delineate panes.

Key Characteristics:

  • Translucent frosted-glass surfaces over a saturated gradient background
  • Theme-color gradients (peach-coral, violet-fuchsia, mint-cyan) as the primary mood
  • Inter for product chrome, Argent CF (serif) for marketing display
  • Squircle-soft 12–16px radii everywhere
  • Sidebar-first layout: tabs, spaces, and bookmarks live on the left, not the top
  • Color picker is a brand surface — themes are user-driven, not fixed
  • Subtle shadows (0 8px 32px rgba(0,0,0,0.08)) over the gradient backdrop

2. Color Palette & Roles

Primary Theme Gradients (User-selectable; default is "Sunset")

  • Sunset Start (#ff7e5f): Peach gradient origin.
  • Sunset End (#feb47b): Soft coral gradient terminus.
  • Twilight Start (#7f5af0): Violet gradient origin.
  • Twilight End (#e84393): Fuchsia gradient terminus.
  • Aurora Start (#16f2b3): Mint gradient origin.
  • Aurora End (#0db4f7): Cyan gradient terminus.

Surface (Frosted)

  • Glass Light (rgba(255, 255, 255, 0.7)): Standard frosted pane over gradient.
  • Glass Medium (rgba(255, 255, 255, 0.5)): Hover state, tab pill background.
  • Glass Heavy (rgba(255, 255, 255, 0.85)): Active pane, command bar.
  • Glass Dark (rgba(20, 20, 25, 0.6)): Dark-mode frosted surface.

Ink & Text

  • Ink Primary (#1a1a1f): Primary text on light frosted surface.
  • Ink Secondary (#54545a): Secondary text, tab title at rest.
  • Ink Muted (#8c8c93): Tertiary, captions, URL bar.
  • Ink Inverse (#fafafa): Text on dark frosted surface.

Border & Divider

  • Border Glass (rgba(255, 255, 255, 0.4)): Frosted-edge border.
  • Border Hairline (rgba(0, 0, 0, 0.06)): Hairline divider on light surface.
  • Border Active (rgba(0, 0, 0, 0.18)): Active tab outline.

Brand Accent

  • Arc Coral (#ff5f5f): Default brand color — used in marketing, arc.net.
  • Arc Lavender (#b794f4): Secondary brand accent.

Semantic

  • Success (#48bb78): Toast confirmation.
  • Warning (#f6ad55): Permission prompt.
  • Error (#f56565): Form validation.

3. Typography Rules

Font Family

  • Display / Marketing: Argent CF, with fallback: 'Source Serif Pro', Georgia, serif
  • Body / UI: Inter, with fallback: system-ui, -apple-system, BlinkMacSystemFont, sans-serif
  • Code / Mono: Berkeley Mono, with fallback: ui-monospace, Menlo, Consolas, monospace

Hierarchy

Role Font Size Weight Line Height Letter Spacing Notes
Marketing Hero Argent CF 72px (4.5rem) 400 1.05 -0.03em Editorial display, marketing only
Section Heading Argent CF 40px (2.5rem) 400 1.15 -0.02em Marketing section titles
Page H1 Inter 32px (2rem) 700 1.2 -0.02em Settings, command bar header
Page H2 Inter 22px (1.375rem) 600 1.25 -0.01em Sub-section
Tab Title Inter 13px (0.8125rem) 500 1.3 -0.005em Sidebar tab label
Body Inter 15px (0.9375rem) 400 1.55 normal Settings prose, tooltips
Caption Inter 12px (0.75rem) 500 1.4 0.01em URL bar protocol, metadata
Code Berkeley Mono 13px (0.8125rem) 400 1.5 normal URL bar, devtools

Principles

  • Serif moments are rare: Argent CF appears only in marketing. The product is sans-only.
  • Title size is small: tabs render at 13px so a long sidebar of 30+ tabs stays scannable.
  • Tracking tightens with size: -0.03em at 72px, returning to normal by 15px.

4. Component Stylings

Buttons

Primary (Filled)

  • Background: linear-gradient on theme color (e.g., linear-gradient(135deg, #ff7e5f, #feb47b))
  • Text: #ffffff
  • Padding: 10px 20px
  • Radius: 12px
  • Shadow: 0 4px 16px rgba(255, 127, 95, 0.3)
  • Hover: shadow grows to 0 8px 24px rgba(255, 127, 95, 0.4)

Glass (Secondary)

  • Background: rgba(255, 255, 255, 0.7)
  • Backdrop: blur(20px)
  • Text: #1a1a1f
  • Border: 1px solid rgba(255, 255, 255, 0.4)
  • Padding: 10px 20px
  • Radius: 12px

Subtle

  • Background: transparent
  • Text: theme color
  • Hover: background rgba(255, 127, 95, 0.1)

Tabs (Sidebar)

  • Background at rest: transparent
  • Background on hover: rgba(255, 255, 255, 0.5)
  • Background active: rgba(255, 255, 255, 0.85) + soft shadow
  • Padding: 8px 12px
  • Radius: 8px
  • Favicon: 16px square at left, 8px gap to title.

Cards / Panes

  • Background: rgba(255, 255, 255, 0.7)
  • Backdrop: blur(24px) saturate 180%
  • Border: 1px solid rgba(255, 255, 255, 0.4)
  • Radius: 16px
  • Shadow: 0 8px 32px rgba(0, 0, 0, 0.08)
  • Padding: 24px

Inputs (Command Bar)

  • Background: rgba(255, 255, 255, 0.85)
  • Backdrop: blur(40px)
  • Text: #1a1a1f
  • Border: 1px solid rgba(255, 255, 255, 0.4)
  • Radius: 14px
  • Padding: 14px 18px
  • Focus: shadow 0 0 0 4px rgba(255, 127, 95, 0.2)

Pills (Spaces / Bookmarks Folder)

  • Background: theme color at 16% alpha
  • Text: theme color (full)
  • Padding: 4px 10px
  • Radius: 9999px
  • Font: 12px / 600

5. Spacing & Layout

  • Base unit: 4px. Scale: 4, 8, 12, 16, 24, 32, 48, 64.
  • Sidebar: 240px wide; collapsible to 56px.
  • Window radius: 12px on the OS window itself (macOS-only flourish).
  • Padding inside panes: 24px.

6. Motion

  • Duration: 200ms for hover; 320ms for tab create/close; 480ms for "Little Arc" window expand.
  • Easing: cubic-bezier(0.32, 0.72, 0, 1) for window expand (Apple's spring-style).
  • Tab swap: 1px translate + opacity blend, no scale change.

7. Usage Guardrails

  • Keep the sidebar-first layout recognizable; top-nav-only compositions should be avoided unless the artifact is a marketing page.
  • Use frosted surfaces and gradient warmth as atmosphere, not as decorative blobs or unrelated background ornaments.
  • Reserve the saturated theme gradient for the browser shell, primary CTA, or one clear focal panel.
  • Keep product UI sans-only; use the serif display voice only for marketing/editorial moments.
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