.rf{--ink:#f4f4f2;--muted:#a8a8ad;display:flex;flex-direction:column;min-height:100vh;background:#0a0a0b;color:var(--ink);-webkit-font-smoothing:antialiased}body:has(.rf),html:has(.rf){background:#0a0a0b}.rf-bar{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:1280px;margin-inline:auto;padding:12px 24px}.rf-bar-link{height:40px;padding:0 18px;font-size:14px}.rf-logo{display:inline-flex;height:44px;color:var(--ink)}.rf-body,.rf-logo{align-items:center}.rf-body{flex:1;display:flex;flex-direction:column;justify-content:center;max-width:880px;margin-inline:auto;padding:48px 24px 120px;text-align:center}.rf-mark{font-size:clamp(140px,22vw,300px);font-weight:400;letter-spacing:-.07em;line-height:.82;font-variant-numeric:tabular-nums}.rf-title{margin-top:36px;font-size:clamp(30px,3.1vw,44px);font-weight:400;letter-spacing:-.035em;line-height:1.1;text-wrap:balance}.rf-intro{max-width:560px;margin-top:16px;font-size:20px;line-height:1.5;color:var(--muted);text-wrap:pretty}.rf-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}.rf-actions,.rf-pill{justify-content:center}.rf-pill{display:inline-flex;align-items:center;height:48px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;letter-spacing:-.01em;transition:background-color .15s cubic-bezier(.4,0,.2,1),transform .15s ease-out}.rf-pill:active{transform:scale(.97)}.rf-pill:focus-visible{outline:2px solid var(--ink);outline-offset:3px}.rf-pill-lit{background:#fff;color:#0a0a0b}.rf-pill-lit:hover{background:#e4e4e2}.rf-pill-quiet{background:#232325;color:var(--ink)}.rf-pill-quiet:hover{background:#2e2e31}.rf-menu{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;width:min(920px,calc(100vw - 48px));margin-top:72px;text-align:left}.rf-course{min-height:220px;padding:22px 22px 24px;border-radius:22px;background:#141415}.rf-course-title{display:flex;justify-content:space-between;gap:12px;font-size:14px;color:var(--muted)}.rf-course ul{display:flex;flex-direction:column;gap:10px;margin-top:16px}.rf-course a{display:flex;align-items:baseline;gap:8px;font-size:16px;color:var(--ink);transition:color .15s}.rf-course a b{display:inline-flex;font-weight:400;color:var(--muted);transition:transform .2s cubic-bezier(.22,1,.36,1),color .15s}.rf-course a:hover{color:#8fb0ff}.rf-course a:hover b{color:#8fb0ff;transform:translateX(3px)}.rf-course a:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:4px}.rf-course a i{flex:1;height:1px;background-image:radial-gradient(circle,#3a3a40 1px,transparent 1.4px);background-size:6px 2px;background-repeat:repeat-x;background-position:0;transform:translateY(-3px)}.rf-body>*{animation:rf-in .7s cubic-bezier(.22,1,.36,1) both}.rf-body>:nth-child(2){animation-delay:.08s}.rf-body>:nth-child(3){animation-delay:.16s}.rf-body>:nth-child(4){animation-delay:.24s}.rf-course{animation:rf-in .7s cubic-bezier(.22,1,.36,1) both}.rf-course:first-child{animation-delay:.32s}.rf-course:nth-child(2){animation-delay:.4s}.rf-course:nth-child(3){animation-delay:.48s}.rf-course:nth-child(4){animation-delay:.56s}@keyframes rf-in{0%{opacity:0;transform:translateY(16px)}}@media (max-width:767px){.rf-menu{grid-template-columns:1fr;width:100%;margin-top:56px}.rf-course{min-height:0}.rf-bar{padding-inline:16px}.rf-intro{font-size:17px}.rf-actions{flex-direction:column;align-self:stretch}}@media (prefers-reduced-motion:reduce){.rf-course a,.rf-pill{transition:none}.rf-body>*,.rf-course{animation:none}}