:root{--black:#000;--white:#fff;--red:#e32636;--line:rgba(255,255,255,.16);--muted:rgba(255,255,255,.58);--green:#33d17a}*{box-sizing:border-box}body{margin:0;background:var(--black);color:var(--white);font-family:"Space Grotesk",sans-serif;min-height:100vh;overflow-x:hidden}.grain{position:fixed;inset:0;opacity:.13;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E")}.shell{width:min(1120px,calc(100% - 48px));margin:auto}nav{height:110px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand img{width:192px;height:auto;display:block;filter:contrast(1.1)}.status,.eyebrow,.label,footer{font:500 11px "DM Mono",monospace;letter-spacing:.14em}.status{color:var(--muted);display:flex;align-items:center;gap:9px}.status span{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 0 rgba(51,209,122,.7);animation:pulse 1.8s infinite}.hero{min-height:calc(100vh - 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48px));margin:auto;border-top:1px solid var(--line);padding:21px 0;color:var(--muted);font-size:10px}footer span{color:var(--red);padding:0 8px}@keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}@keyframes appear{from{opacity:0;transform:translateX(8px)}to{opacity:1;transform:none}}@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(51,209,122,0)}100%{box-shadow:0 0 0 0 rgba(51,209,122,0)}}@media(max-width:720px){.shell,footer{width:min(100% - 32px,1120px)}nav{height:82px}.status{font-size:9px}.hero{padding:68px 0}.auth-layout{display:block}.auth-card{margin-top:45px}.challenge{padding:58px 0}.grid{grid-template-columns:1fr}.grid article+article{border-left:0;border-top:1px solid var(--line)}.flag-form>div{display:block}.flag-form .primary{width:100%;margin-top:15px}.challenge-head{margin-bottom:35px}}