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var(--border);background:var(--bg-soft);border-radius:var(--radius-sm);cursor:pointer;flex-direction:column;flex:none;justify-content:center;align-items:center;gap:4px;width:2.4rem;height:2.15rem;padding:0;transition:border-color .15s;display:inline-flex}.nav-toggle:hover{border-color:var(--text)}.nav-toggle span{background:var(--text);width:16px;height:2px;transition:transform .2s,opacity .2s;display:block}.site-header.open .nav-toggle span:first-child{transform:translateY(6px)rotate(45deg)}.site-header.open .nav-toggle span:nth-child(2){opacity:0}.site-header.open .nav-toggle span:nth-child(3){transform:translateY(-6px)rotate(-45deg)}@media (prefers-reduced-motion:reduce){.site-header.open .nav-chip{animation:none}}@media (width<=640px){.site-header.collapsed:not(.open) .nav-chip.active{display:none}.site-header.open .container{justify-content:space-between}.site-header.open nav{flex-basis:100%;order:3}.theme-toggle,.nav-toggle{min-height:2.75rem}.nav-toggle{width:2.75rem}.hero-visual{max-width:none;margin-top:2rem}}.site-footer{background:var(--footer-bg);color:var(--footer-muted);margin-top:4rem;padding:3rem 0 2.5rem;font-size:.9rem}.site-footer strong{color:var(--footer-text);letter-spacing:-.03em;font-size:1.2rem;font-weight:500}.site-footer .cols{flex-wrap:wrap;gap:2.5rem;display:flex}.site-footer a{color:var(--footer-text)}.site-footer a:hover{color:var(--green)}.site-footer .fine{font-family:var(--font-mono);font-size:.8rem}.next-steps{max-width:var(--article-width);margin-top:2.5rem;border-top:1px solid var(--border);margin-inline:auto;padding-top:1rem}@media (width<=640px){h1{font-size:1.9rem}body{font-size:1rem}.cta-block{padding:1.4rem 1.3rem}}.register-switch{background:var(--bg-soft);border:1px solid var(--border);border-radius:999px;gap:4px;margin:0 0 2rem;padding:4px;display:inline-flex}.register-switch button{font-family:var(--font-sans);cursor:pointer;color:var(--muted);background:0 0;border:0;border-radius:999px;padding:.5rem 1rem;font-size:.9rem;line-height:1;transition:background .15s,color .15s}.register-switch button:hover{color:var(--text)}.register-switch button.is-active{background:var(--accent);color:var(--on-accent)}.register-switch button.is-active:hover{color:var(--on-accent)}.register-bar,.registers[data-active=bar] .register-formal{display:none}.registers[data-active=bar] .register-bar{display:block}