.nf-masthead{text-align:center;align-content:center;min-height:min(76vh,720px);padding-block:clamp(3rem,8vw,6rem);display:grid}.nf-inner{max-width:62ch;margin-inline:auto}.nf-mark{justify-content:center;margin-bottom:2rem;display:flex}.nf-mark .f-mark{width:132px;height:132px}.nf-code{justify-content:center}.nf-code b{letter-spacing:.28em;color:var(--f-glacier);font-size:.86rem}.nf-title{margin-bottom:1.2rem}.nf-lede{max-width:54ch;margin-inline:auto}.nf-actions{justify-content:center;margin-top:2.2rem}.nf-hint{justify-content:center;margin-top:2.4rem}.nf-masthead.is-pinged:after{content:"";z-index:0;pointer-events:none;background:radial-gradient(420px circle at var(--sonar-x,50%)var(--sonar-y,50%),color-mix(in srgb,var(--f-glacier)16%,transparent),transparent 68%);animation:1.6s ease-out forwards nf-ping-glow;position:absolute;inset:0}@keyframes nf-ping-glow{to{opacity:0}}[data-theme=light] .nf-masthead .f-ripple{border-color:color-mix(in srgb,var(--f-glacier)75%,transparent)}.nf-masthead.is-listening [data-sonar-echo]{color:var(--f-glacier);border-color:color-mix(in srgb,var(--f-glacier)55%,transparent)}.js-fx .nf-masthead.is-listening [data-sonar-echo]{animation:.9s ease-in-out infinite nf-listen}@keyframes nf-listen{50%{opacity:.35}}@media (prefers-reduced-motion:reduce){.js-fx .nf-masthead.is-listening [data-sonar-echo]{animation:none}}.nf-course{padding-top:0}.nf-links{border:1px solid var(--f-hair);background:var(--f-hair);border-radius:20px;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;display:grid;overflow:hidden}.nf-link{background:color-mix(in srgb,var(--f-mid)82%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:1rem;padding:1.4rem 1.5rem;text-decoration:none;transition:background-color .3s;display:grid;position:relative}[data-theme=light] .nf-link{background:color-mix(in srgb,var(--f-shallow)88%,transparent)}.nf-link:before{content:"";pointer-events:none;opacity:0;background:radial-gradient(320px circle at var(--mx,50%)var(--my,50%),color-mix(in srgb,var(--f-glacier)14%,transparent),transparent 70%);transition:opacity .4s;position:absolute;inset:0}.nf-link.is-hot:before{opacity:1}.nf-link-no{font-family:var(--f-mono);letter-spacing:.16em;color:var(--f-glacier);opacity:.7;font-size:.68rem}.nf-link-body{gap:.3rem;display:grid}.nf-link-body b{letter-spacing:-.015em;color:var(--f-ink);font-size:1rem;font-weight:500}.nf-link-body small{color:var(--f-faint);font-size:.85rem;line-height:1.5}.nf-link-go{color:var(--f-glacier);opacity:0;place-items:center;transition:opacity .3s,transform .3s;display:grid;transform:translate(-6px)}.nf-link-go svg{width:13px;height:13px}.nf-link:hover .nf-link-go,.nf-link:focus-visible .nf-link-go{opacity:1;transform:none}@media (max-width:760px){.nf-links{grid-template-columns:minmax(0,1fr)}}