.stack-groups{gap:2.5rem}.stack-group,.stack-groups{display:flex;flex-direction:column}.stack-group{gap:.75rem}.stack-group-title{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.15em;text-transform:uppercase;color:var(--clr-text-secondary);padding-bottom:.5rem;border-bottom:1px solid var(--clr-border-subtle)}.stack-badges{gap:.5rem}.cert-section{margin-top:4rem;padding-top:2rem;border-top:1px solid var(--clr-border-subtle);display:flex;flex-direction:column}.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:1rem;gap:1rem}.cert-card{background:var(--clr-surface);border:1px solid var(--clr-border);border-top:2px solid var(--clr-border);padding:1rem 1.25rem;display:flex;flex-direction:column;gap:.3rem;transition:border-top-color .2s}.cert-card:hover{border-top-color:var(--clr-accent)}.cert-header{display:flex;justify-content:space-between;align-items:flex-start;gap:.5rem}.cert-name{font-size:.85rem;font-weight:500;color:var(--clr-text-primary);line-height:1.3;flex:1 1}.cert-year{font-size:.68rem;color:var(--clr-text-muted);letter-spacing:.05em;flex-shrink:0}.cert-issuer{font-family:var(--font-mono);font-size:.68rem;color:var(--clr-accent-subtle);letter-spacing:.04em}.cert-valid{font-size:.65rem;color:var(--clr-status-active);letter-spacing:.08em;text-transform:uppercase}.lang-section{margin-top:3rem;display:flex;flex-direction:column}.lang-list{display:flex;flex-wrap:wrap;gap:1rem}.lang-item{display:flex;flex-direction:column;gap:.2rem;padding:.75rem 1.25rem;background:var(--clr-surface);border:1px solid var(--clr-border);min-width:160px}.lang-name{font-size:.92rem;font-weight:600;color:var(--clr-text-primary)}.lang-level{font-family:var(--font-mono);font-size:.68rem;color:var(--clr-accent-subtle);letter-spacing:.04em}@media (max-width:900px){.cert-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:640px){.cert-grid{grid-template-columns:1fr}}