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@media(max-width:1200px){.sidebar{width:210px;padding-left:15px;padding-right:15px}.main-shell{margin-left:210px}main{padding:30px 27px}.topbar{padding:0 27px}.practice-layout{grid-template-columns:minmax(0,1fr) 235px;gap:18px}.metrics>div{padding:0 17px}.metric-message{display:none!important}.metrics{grid-template-columns:1fr 1fr 1fr}.metrics>div:nth-child(3){border:0}.edition{display:none}.category{display:none}.arena-actions{padding:16px}.arena-actions .text-button span{display:none}.terminal{margin:0 18px}.challenge-body{padding:23px 18px 16px}.challenge-body h2{font-size:22px}.bottom-banner>span{display:none}.reference-grid{grid-template-columns:1fr}.section-heading .tiny{display:none}.terminal-status{font-size:5px}.right-actions{gap:10px}}
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@media(max-width:640px){.sidebar{position:static;width:100%;padding:17px 19px 10px;border-right:0;border-bottom:1px solid var(--border)}.brand{margin:0 0 17px;font-size:25px}.sidebar nav{display:flex;gap:4px}.nav-item{font-size:10px;padding:9px 7px;margin:0;justify-content:center;gap:6px}.nav-item .icon{width:15px;height:15px}.nav-item span{white-space:nowrap}.nav-item[data-view="challenges"] span{font-size:0}.nav-item[data-view="challenges"] span:after{content:"Library";font-size:10px}.nav-item[data-view="progress"] span{font-size:0}.nav-item[data-view="progress"] span:after{content:"Progress";font-size:10px}.sidebar .workspace-label,.sidebar-divider,.tool-list,.sidebar-bottom{display:none}.main-shell{margin:0}.topbar{height:54px;padding:0 21px}.topbar-right{gap:12px}.breadcrumb{font-size:10px}.xp{font-size:10px}.topbar .avatar{width:24px;height:24px;font-size:10px}main{padding:28px 19px}.eyebrow{font-size:8px}h1{font-size:27px;letter-spacing:-1px}.page-heading{margin-bottom:23px}.page-heading p{font-size:11px;max-width:300px;line-height:1.8}.metrics{padding:17px 0;margin-bottom:27px}.metrics>div{gap:7px;padding:0 11px}.metrics .icon{display:none}.metrics strong{font-size:22px}.metrics em{font-size:9px}.metrics small{font-size:8px}.challenge-meta{gap:7px}.challenge-body h2{font-size:23px;line-height:1.3}.challenge-description{font-size:12px}.fact-grid>div{padding:0 10px}.fact-grid code{font-size:10px}.fact-grid span{font-size:7px}.terminal{margin:0 13px}.terminal-bar{padding:10px;font-size:8px;gap:8px}.terminal-status{font-size:5px}.terminal-content{padding:15px 12px}.terminal-comment{font-size:8px}.terminal-foot{font-size:7px}.arena-actions{flex-wrap:wrap;padding:16px 13px;gap:13px}.primary{padding:11px 12px;font-size:10px;gap:10px}.text-button{font-size:10px}.right-actions{gap:10px}.under-arena{font-size:8px;line-height:1.6;text-align:center}.practice-aside{gap:12px}.timer-card{padding:17px 9px 0}.section-kicker{font-size:6px}.timer-visual{width:122px;height:122px}.timer-value strong{font-size:39px}.timer-value>span{font-size:9px}.timer-card h3{font-size:11px}.timer-card p{font-size:9px}.timer-bottom{margin:0 -9px;font-size:7px;padding:12px 4px}.path-card{padding:16px 11px 0}.path-card h3{font-size:10px}.path-card .section-heading>span{font-size:8px}.path-item{gap:7px;padding:12px 0}.path-item strong{font-size:8px;line-height:1.5}.path-item small{font-size:7px}.path-number{width:21px;height:21px;font-size:7px}.path-item:not(:last-child)::after{left:10px}.path-item .green-dot{display:none}.all-challenges{font-size:8px;margin-top:8px}.bottom-banner{padding:17px 14px;gap:12px}.bottom-banner h3{font-size:11px}.bottom-banner p{font-size:9px;line-height:1.8}.banner-icon{width:33px;height:33px}.result-heading{flex-wrap:wrap}.result-heading h3{font-size:13px}.result-heading>span{margin-left:28px}.reference-row{grid-template-columns:1fr;gap:8px}.reference-grid .content-card{padding:20px}.reference-command{font-size:10px}.filters button{font-size:10px;padding:8px 12px}.library-card{padding:20px}.library-card-footer{font-size:9px}.error-toast{width:90vw}.modal{padding:30px}.modal h2{font-size:25px}footer{padding:19px}.terminal-status{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

.live-clock{display:flex;align-items:center;gap:5px;font-size:12px;color:#a7734d;font-variant-numeric:tabular-nums}.live-clock .icon{width:14px;height:14px}.tool-symbol{white-space:nowrap}
@media(max-width:640px){.topbar{position:sticky;top:0;z-index:15}.live-clock{font-size:10px}.live-clock .icon{width:12px;height:12px}}

.terminal-history{max-height:240px;overflow:auto;scrollbar-width:thin;scrollbar-color:#5c6e50 #202a24}.terminal-entry{margin-bottom:14px}.terminal-entry pre{white-space:pre-wrap;overflow-wrap:anywhere;font:11px/1.7 ui-monospace,SFMono-Regular,monospace;margin:0 0 5px}.terminal-command{color:#bad1a8}.terminal-output{color:#cbd5c3}.terminal-exit{font:10px ui-monospace,monospace;color:#d8a489}.result>.text-button{margin-right:20px}

.challenge-requirements{padding-left:18px;margin:15px 0 5px;font-size:11px;color:#6c7862;line-height:1.8}.challenge-requirements li{padding:3px 0 5px}.difficulty.trivial{background:#edf5ee;color:#55825f}.difficulty.advanced{background:#f7e9dc;color:#a0754e}.difficulty.expert{background:#eee7f4;color:#887098}.difficulty.master{background:#f6e3e4;color:#a75d64}.filters{flex-wrap:wrap}.library-toolbar{align-items:flex-start}.result code{white-space:pre-wrap}