:root{--brand: #38BDF8;--brand-hover: #0EA5E9;--brand-light: #7DD3FC;--ink: #1f2937;--muted: #6b7280;--bgDark: #111827;--navHeight: 96px;--white: #ffffff;--border: #e5e7eb}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.6;color:var(--ink);background-color:var(--white)}section{scroll-margin-top:calc(var(--navHeight) + 14px)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px}