Swiss International Plans with Billing Toggle

Act like a frontend developer with 15 years of experience. I want the exact same UI with 95-99% similarity.

Platform: This is a RESPONSIVE design — it should work on both mobile and desktop. Use mobile layout patterns (bottom nav, stacked content) for mobile, and desktop layout patterns (sidebar/nav bar, wider content areas) for web.

Design a pricing screen with a monthly/yearly segmented toggle at the top showing a "Save 20%" chip, and three compact plan cards in a horizontal scroll row.

Visual style — Swiss International:
A strict modular grid with one bold accent color used sparingly for a single element per screen. Tight-tracked Helvetica-style sans-serif, left-aligned ragged-right text. Thin 1px rules define regions instead of cards. Zero radius, zero shadow — every element sits on a precise baseline grid. Rational and disciplined.

Color palette — Red Black:
Background #FFFFFF. Text #111111. Accent red #E30613.

Typography — use these exact font families:
- Headings / display: "Helvetica Neue", "Arial", sans-serif

Commit fully to this style — it should be unmistakable at a glance. Use realistic content, not placeholder text. Keep animations smooth (200ms ease-out).