Design a light-mode web interface screen: crisp corporate cobalt paired with airy pastel-tinted cards and friendly narrative illustrations.
LAYOUT
The workspace employs an asymmetric two-pane structure: a fixed-width left rail (approximately 240px) housing the brand mark, vertical navigation, and bottom user drawer, alongside an expansive right dashboard. The right pane leads with a dual-level header containing page typography and utility actions (search, notification bell, split CTA). The body organizes referral program cards into an exact 3-column grid, finished at the bottom by a four-column horizontal KPI summary strip.
PALETTE (use these exact hex values)
- #f8fafc — Canvas Slate: Global application page and backdrop background beneath all surfaces
- #ffffff — Card Surface: Elevated card interiors, navigation sidebar base, and search bar fill
- #1d6ff2 — Cobalt Primary: Primary CTAs, active sidebar pills, directional text links, and key highlights
- #eef5ff — Active Nav Tint: Background fill for active sidebar navigation items and promo callouts
- #16a34a — Active Green: Text and icon color for active status pills and positive growth metrics
- #eefdf3 — Active Green Surface: Background fill for the soft status badge pills on cards
- #e2e8f0 — Border Hairline: Structural borders for cards, separators, search inputs, and containers
- #0f172a — Text Slate Heading: Primary page title, card headers, and large metric numerals
- #64748b — Text Slate Muted: Descriptive copy, inactive nav labels, timestamps, and input placeholders
TYPOGRAPHY
Typeface Inter (or Plus Jakarta Sans, SF Pro Text, DM Sans), weights 400/500/600/700. Sizes 12px caption, 13px body-sm, 14px body, 15px body-lg, 16px subheading, 20px heading, 28px heading-lg. Tracking -0.02em at display, 0 at body. The typography is pragmatic, modern, and friendly, using a geometric sans-serif that echoes tech-forward operational precision. High visual hierarchy is established by contrasting 28px semi-bold titles with subtle, low-contrast 13px supporting descriptions. Inter or Plus Jakarta Sans perfectly embodies this balanced Swiss clarity while maintaining readable micro-copy across dashboard tables and metric blocks.
GEOMETRY & SPACING
Corner radii — cards 16px, links 9999px, inputs 10px, buttons 10px. Spacing on a 4px unit, 24px gaps, 32px between sections, 1440px container, comfortable density.
DEPTH
Depth is achieved through structural planar layering rather than dramatic elevation. Surfaces rely on hairline 1px strokes (#e2e8f0) against an off-white canvas (#f8fafc), paired with almost imperceptible ambient shadows (e.g., 0 1px 3px rgba(0,0,0,0.04)). Floating elements like modals or flyouts use low-blur, wide-spread diffuse elevation without harsh occlusions.
IMAGERY
Illustrations feature playful, modern 2D isometric scenes showing diverse characters interacting with oversized screens, megaphones, gift boxes, and stacks of coins. Characters are rendered with clean vector paths, soft pastel fills (bubblegum pink, mint green, baby blue, warm amber), and minimal outlines. Stock photographic portraits or 3D skeuomorphic renders are strictly prohibited.
SIGNATURE DETAIL — the thing that makes this design itself
The two-tier illustration card design: a 16px rounded card split horizontally between a tinted pastel illustration stage on top and an airy information footer below featuring an 'Active' green pill opposite a cobalt directional link.
MUST
- Retain uniform 24px gutters between all program cards in the central 3-column grid.
- Split card containers cleanly into a pastel-tinted illustration bay and a crisp white metadata panel.
- Keep card action links ('View Program →') strictly right-aligned opposite the status badge.
- Use pastel background tints (pink, blue, yellow, green) to individualize program illustration backdrops.
AVOID
- Never use dark high-contrast drop shadows; rely on 1px borders (#e2e8f0) for surface definition.
- Do not allow raw photographs; imagery must remain vector flat or isometric character illustrations.
- Never set card background colors to anything other than pure white (#ffffff).
- Avoid solid bright badges; status pills must use desaturated pastel backgrounds with colored text.
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 
