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12px;background:white;color:var(--muted);cursor:pointer}@media(max-width:760px){.shell{padding:22px 18px}.topbar{margin-bottom:22px}.toplinks{gap:15px}.layout{grid-template-columns:1fr;gap:20px}.intro{padding:8px 4px}.intro h1{font-size:32px;margin:12px 0}.intro>p{font-size:13px;max-width:none}.features,.help-card{display:none}.workspace{padding:23px 19px;border-radius:19px}.footer{gap:12px;font-size:10px}.field-grid{gap:0 10px}.brand{font-size:18px}.challenge-slot{max-width:100%;overflow:auto}}