Design a light-mode mobile app interface screen: immersive wilderness documentary photography anchored by crisp modular utility cards.
LAYOUT
The vertical composition is anchored by an immersive 380px photographic hero section that dissolves into the content canvas via two floating hero modules. Beneath this split card row, standard section headings introduce a horizontally scrolling multi-card category carousel. The flow concludes with full-width dark navigational route cards, ensuring varied visual pacing and density.
PALETTE (use these exact hex values)
- #F5F6F8 — Canvas Ground: App-wide background beneath hero and card carousels
- #FFFFFF — Card Surface: Primary elevated card container surface for interactive modules and lists
- #376AED — Action Blue: Primary CTA fill, active view-all links, and highlighted map routes
- #161A1D — Obsidian Text: Primary titles, card headings, and key section labels
- #727C87 — Granite Gray: Secondary instructions, seasonal labels, and sub-metric counts
- #EAF3EB — Forest Active Tint: Selected background highlight for seasonal selector pill buttons
- #BD845C — Pecan Muted: Autumn seasonal icon and natural landmark tone indicators
- #16201B — Deep Moss Base: Dark mode card surface for high-contrast trail and elevation previews
TYPOGRAPHY
Typeface SF Pro Display (or Inter, Plus Jakarta Sans, Public Sans), weights 400/500/600/700. Sizes 11px caption, 13px body-sm, 15px body, 17px subheading, 20px heading, 26px heading-lg, 38px display. Tracking -0.03em at display, 0.08em on caps overline. Clean, highly legible neo-grotesque sans-serif typography (SF Pro or Inter) lends authoritative modern park-ranger clarity without feeling bureaucratic. The heavy bold weights (-0.03em tracking) in headlines offer clear signposting, while small tracked uppercase overlines evoke field guide cartography. Inter or Plus Jakarta Sans are optimal open-source replacements for SF Pro.
GEOMETRY & SPACING
Corner radii — cards 24px, links 6px, inputs 12px, buttons 14px. Spacing on a 4px unit, 16px gaps, 28px between sections, 390px container, comfortable density.
DEPTH
Depth is created primarily through overlapping planes rather than exaggerated drop shadows. Floating cards straddle the photograph edge, rendered in stark pure white (#FFFFFF) with an imperceptible 0 8px 24px rgba(0,0,0,0.06) ambient blur. Inside photo cards, subtle bottom-weighted linear gradients ensure legible white text without opaque backplates.
IMAGERY
Photography emphasizes authentic national geographic documentary style—unfiltered, crisp, and filled with natural sunlight and textured terrain. Subjects range from unscripted wildlife in natural repose to mist-shrouded geysers and vintage park transport. Glossy studio shots, artificial studio color grading, or stock business travelers are strictly off-brand.
SIGNATURE DETAIL — the thing that makes this design itself
The dual floating hero cards—one utilitarian white form and one photographic feature—straddling the bottom edge of the full-bleed documentary header. This establishes instant tactical choice between planning utility and visual exploration. It is broken if cards are pushed below the photo fold or rendered without symmetrical height and corner radii.
MUST
- Overlap interactive primary cards across the hero image boundary by 40-50px.
- Use generous 24px radii on all major parent card containers.
- Rely on #376AED solely for navigational progression and actionable touch targets.
- Maintain crisp 12px vertical spacing between card titles and body descriptive copy.
AVOID
- Never drop heavy black shadows beneath cards; use subtle ambient gray diffusion.
- Do not use saturated yellow, red, or purple accents that clash with wilderness tones.
- Avoid sharp or low-radius corners below 14px on content cards.
- Do not allow hero typography to compete with animal focal points in the photography.
OUTPUT
Render as a clean, pixel-crisp UI design at roughly 1280:3840. 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 
