The fundamentals of good web design have stabilized in 2026 around a small number of non-negotiable practices that span technical performance, accessibility, conversion design, and trust building. The aesthetic conventions evolve every few years; the underlying principles do not. **Performance fundamentals.** - Largest Contentful Paint under 2.5 seconds on real-world mobile networks (not just on desktop with fibre). - Interaction to Next Paint under 200ms across critical interaction surfaces. - Cumulative Layout Shift under 0.1 — no surprise layout jumps as content loads. - Total page weight under 1.5 MB for the initial view; under 3 MB total including below-fold content. - Modern image formats (WebP, AVIF) with appropriate sizing and lazy loading. **Mobile-first design.** Canadian mobile traffic share now exceeds 65% in most categories. Sites designed primarily for desktop and adapted for mobile produce systematically worse outcomes than sites designed primarily for mobile and adapted for desktop. Test all critical user journeys on actual mobile devices, not just browser developer tool emulation. **Accessibility.** WCAG 2.2 AA conformance is the default standard for Canadian businesses, with AODA (Ontario) and ACA (federal) raising compliance pressure. Beyond legal requirements, accessibility improves conversion for everyone — high-contrast text, clear focus states, proper form labels, keyboard navigation, semantic HTML, and screen-reader compatibility benefit users with and without disabilities. **Visual hierarchy and conversion design.** Clear primary action on every page. Secondary actions don't compete visually with the primary action. Above-the-fold content sets context immediately; below-the-fold content supports the decision. Calls-to-action use specific language ('Get a quote' beats 'Submit'; 'Book a 30-minute consultation' beats 'Contact us'). **Trust signals.** Named team members with photos, bios, and credentials. Specific social proof (named client logos with permission, case studies with measurable outcomes, third-party reviews). Transparent pricing where possible — opaque pricing increasingly signals lack of confidence. Clear privacy and data practices, especially under PIPEDA and Quebec's Law 25. **Content matching intent.** The content on a page should match the search intent of users arriving at it. Service pages should describe the service substantively, not just sell it. Pricing pages should disclose pricing structure or explain transparently why pricing requires a conversation. Educational content should educate rather than gate the educational value behind contact forms. **Design system over ad-hoc styling.** A documented design system (design tokens for colour, typography, spacing; reusable component library; consistent interaction patterns) produces better outcomes than ad-hoc page-by-page styling. The investment is upfront; the payoff is faster iteration and consistent quality across the site. **Honest expectations.** Nothing about good design in 2026 is fundamentally new. The fundamentals have been stable for years; the gap is between sites that consistently apply them and sites that selectively apply them. Most Canadian SMB sites we audit fail not because the team didn't know what good looked like, but because shipping discipline didn't sustain the standard.