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a:hover{color:var(--orange)}.site-header__inner{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px;max-width:1000px;margin:0 auto;display:flex}.site-header__title{font-family:Arimo,sans-serif;font-size:22px}.site-header__tagline{color:#b9c0c6;font-size:14px}main{max-width:1000px;margin:0 auto;padding:40px 32px 80px}main h1{color:var(--navy);border-bottom:1px solid var(--darkgray);margin-bottom:24px;padding-bottom:10px;font-family:Arimo,sans-serif;font-size:28px;line-height:1.3}.intro{max-width:640px;margin-bottom:32px;font-size:18px;line-height:1.6}.challenge-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px;display:grid}.challenge-card{border:2px solid #0000001c;border-radius:.5rem;flex-direction:column;padding:1.5rem;display:flex;box-shadow:0 15px 30px #0000001c,0 5px 15px #00000014}.challenge-card__number{background:var(--orange);width:2rem;height:2rem;color:var(--navy);border-radius:50%;justify-content:center;align-items:center;margin-bottom:1rem;font-weight:700;display:inline-flex}.challenge-card h2{color:var(--navy);margin-bottom:.75rem;font-family:Arimo,sans-serif;font-size:20px;line-height:1.4}.challenge-card p{color:var(--darkgray);flex-grow:1;margin-bottom:1.25rem;font-size:15px;line-height:1.5}.btn{z-index:1;text-transform:uppercase;min-width:100px;color:var(--darkgray);text-align:center;border:none;outline:none;align-self:flex-start;padding:8px 14px;font-family:inherit;font-size:12px;text-decoration:none;display:inline-block;position:relative;overflow:hidden}.btn:focus-visible{outline:2px solid var(--navy);outline-offset:2px}.btn.primary{border:1px solid var(--orange)}.btn.primary:hover{color:var(--navy)}.btn.primary:before{background-color:var(--orange)}.btn.submit{background:var(--orange);color:var(--navy);border:1px solid 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h3{color:var(--navy);margin-top:1.5rem;margin-bottom:.5rem;font-family:Arimo,sans-serif;font-size:18px}.prose p{margin-bottom:1rem;line-height:1.6}.prose ul,.prose ol{list-style:revert;margin:0 0 1rem 1.5rem}.prose li{margin-bottom:.5rem;line-height:1.6}.prose a{color:var(--orange);text-decoration:underline}.prose a:hover{color:var(--orange-dark)}.external-link-icon{color:var(--orange);vertical-align:middle;margin-left:.25em;display:inline-block}.prose a:hover .external-link-icon{color:var(--orange-dark)}.prose blockquote{border-left:4px solid var(--orange);color:var(--darkgray);background:#ff95000f;margin:0 0 1rem;padding:.5rem 1rem}.prose pre{background:var(--navy);color:var(--white);border-radius:.375rem;margin-bottom:1rem;padding:1rem;overflow-x:auto}.prose code{color:var(--navy);background:#ff95002e;border-radius:.25rem;padding:.15em .4em;font-family:SFMono-Regular,Consolas,monospace;font-size:.9em}.prose pre code{color:inherit;background:0 0;border-radius:0;padding:0}.prose img{border-radius:.375rem;margin:1rem 0}.challenge-form{border:2px solid #0000001c;border-radius:.5rem;margin-top:3rem;padding:1.5rem;box-shadow:0 15px 30px #0000001c,0 5px 15px #00000014}.challenge-form h2{color:var(--navy);margin-bottom:1rem;font-family:Arimo,sans-serif;font-size:22px}.form-field{margin-bottom:1.25rem}.form-field label{color:var(--navy);margin-bottom:.4rem;font-weight:700;line-height:1.4;display:block}.form-field input,.form-field textarea{width:100%;font:inherit;color:var(--darkgray);resize:vertical;border:1px solid #0003;border-radius:.25rem;padding:.5rem .75rem}.form-field input:focus-visible,.form-field textarea:focus-visible{outline:2px solid var(--orange);outline-offset:1px}.challenge-form .btn.submit{margin-bottom:1rem}.form-status{color:var(--navy);min-height:1.2em;font-size:14px}@media (width<=600px){main{padding:24px 20px 60px}.challenge-grid{grid-template-columns:1fr}}