PCA

• R verification: variance decomposition (eigenvalues, % explained, cumulative) can be re-computed by R `prcomp()` running in your browser
• Loadings Matrix bug fixed — previously displayed all NaN due to a typed-array rendering quirk; now shows real loading coefficients

Regression

• R verification: every result can be independently re-computed by R `lm()` running in your browser (one-click opt-in, no server upload)
• Confidence-interval labels now follow the active confidence level — switching 90% / 95% / 99% updates all displays in real time

T-Test

• R verification: every result can be independently re-computed by R running in your browser (one-click opt-in, no server upload)
• Publication-style mean comparison bar chart with ±SD error bars and significance bracket (**, *, n.s. with p-value)
• Mann-Whitney rank-biserial sign convention now matches R `wilcox.test`; ties continuity correction aligned with R defaults

Homepage visual redesign

• Centered hero layout with gradient glow background and entrance animations
• Scroll-driven fade-in animations across all homepage sections
• Compact two-column footer replacing button-style links with minimal text links

Aging Is Not Just Getting Old: How Science and Nature Mapped the Body's Silent Revolution

Three landmark 2026 studies reveal aging as a coordinated, organism-wide remodeling: one-quarter of 536 cell types shift with age, gut bacteria disrupt brain memory via medium-chain fatty acids, and the NAD+/NADH redox ratio, not absolute NAD+ levels, may determine mitochondrial resilience in Alzheimer's disease.