Design a light-mode web interface screen: warm parchment gallery balancing deep charcoal navigation with editorial terracotta accents and vector vignettes.
LAYOUT
A two-pane structure composed of a fixed 230px left obsidian sidebar alongside a responsive warm canvas. The main canvas stacks vertically: a utility search and user actions header, an expressive hero billboard, a row of three micro-value proposition cards, a horizontal category filter row with sorting dropdowns, and an expansive four-column grid of preview cards.
PALETTE (use these exact hex values)
- #12151a — Obsidian Sidebar: Full-height vertical app navigation background providing high contrast against the content canvas.
- #f7f4ee — Warm Linen Canvas: Dominant background canvas across all workspace pages, providing a soft paper-like tone.
- #ffffff — Pure White Card: Background surface for template preview cards, search inputs, and popover menus.
- #b84334 — Terracotta Primary: Primary action buttons, active tab indicators, promotional badges, and highlight vector fills.
- #2a1b1b — Terracotta Muted: Subtle tint background for selected navigation items inside the dark sidebar rail.
- #16191f — Charcoal Ink: Primary headings, titles, active category pill text, and card headlines.
- #e7e2d8 — Subtle Sand Border: Hairline dividers, input outlines, and preview card bounding strokes.
- #767982 — Pewter Grey Text: Inactive sidebar items, card category subtitles, secondary metadata, and icon strokes.
TYPOGRAPHY
Typeface Plus Jakarta Sans (or Inter, DM Sans), weights 400/500/600/700. Sizes 11px caption, 12px body-sm, 14px body, 16px body-lg, 20px subheading, 28px heading, 36px display. Tracking -0.02em at headings, 0 at body. The typographic tone balances contemporary SaaS functionalism with modern boutique publishing. Plus Jakarta Sans (or Inter) provides absolute clarity, dense numeric readouts, and architectural structure in navigation and lists. A discreet touch of warm cursive script introduces a handcrafted, artisanal touch to promotional drop badges.
GEOMETRY & SPACING
Corner radii — cards 12px, links 4px, inputs 8px, buttons 8px. Spacing on a 8px unit, 20px gaps, 32px between sections, 1440px container, comfortable density.
DEPTH
Depth is handled entirely flat and structural, relying on high-contrast surface color stepping rather than blurred shadows. Canvas elements sit cleanly on #f7f4ee, while white interactive tiles use a subtle 1px border (#e7e2d8) to delineate planes. Where elevation is required, an ultra-faint 0 2px 4px rgba(0,0,0,0.03) shadow maintains the crisp, print-like discipline.
IMAGERY
Vector-based editorial spot illustrations featuring corporate business characters drawn in flat, modernist silhouettes with solid terracotta, navy, dusty blue, and sage tones. Photography is completely avoided in catalog cards in favor of clean graphic mockups. Photographic assets are restricted solely to small user profile avatars.
SIGNATURE DETAIL — the thing that makes this design itself
The juxtaposition of an ink-black obsidian control column against a warm, parchment-toned gallery punctuated by muted terracotta (#b84334) accents and rounded archvector graphics. This creates the feel of an upscale design agency's curated vault rather than a sterile software repository. Misusing it by shifting the canvas to cold hex white breaks the boutique atmosphere immediately.
MUST
- Keep the canvas strictly on #f7f4ee to preserve the warm editorial, paper-like atmosphere.
- Reserve the terracotta red (#b84334) strictly for primary triggers and deliberate visual anchors.
- Ensure all card frames use a crisp 1px border (#e7e2d8) instead of fuzzy, dark box shadows.
- Maintain high typography contrast: bold headings in #16191f paired with clean #767982 captions.
AVOID
- Do not switch the main canvas to stark cool white (#ffffff); it destroys the warm editorial tone.
- Avoid multi-colored neon CTA buttons; stick exclusively to the signature terracotta #b84334.
- Do not introduce heavy multi-layered box shadows on content cards.
- Never use dark sidebar themes on the main canvas; the split contrast is foundational.
OUTPUT
Render as a clean, pixel-crisp UI design at roughly 3520:2336. Flat vector rendering, real legible text, no browser chrome, no device mockup frame, no watermark, no lorem ipsum placeholder blocks. 在 DraPub 中尝试 
