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155);--ed-comment: #778591;--ed-punct: #7b8a95;--ed-bugline: oklch(.72 .14 45 / .13);--code-chip-bg: oklch(.72 .13 80 / .14);--code-chip-border: oklch(.72 .13 80 / .4);--code-chip-ink: oklch(.8 .1 80);--shadow-card: 0 1px 2px rgba(0, 0, 0, .3);--shadow-hover: 0 6px 18px rgba(0, 0, 0, .45);--scrim: rgba(1, 4, 9, .72);--shadow-modal: 0 24px 64px rgba(0, 0, 0, .55);--shadow-drawer: -18px 0 36px rgba(0, 0, 0, .4)}html[data-accent]{--ac: oklch(.6 var(--ac-c) var(--ac-h));--ac-ink: oklch(.45 var(--ac-c) var(--ac-h));--ac-wash: oklch(.6 var(--ac-c) var(--ac-h) / .14);--ac-wash-strong: oklch(.6 var(--ac-c) var(--ac-h) / .24);--ac-border: oklch(.6 var(--ac-c) var(--ac-h) / .4);--code-chip-bg: oklch(.6 var(--ac-c) var(--ac-h) / .1);--code-chip-border: oklch(.6 var(--ac-c) var(--ac-h) / .3);--code-chip-ink: oklch(.45 var(--ac-c) var(--ac-h))}html[data-theme=dark][data-accent]{--ac: oklch(.7 var(--ac-c) var(--ac-h));--ac-ink: oklch(.78 calc(var(--ac-c) - .03) var(--ac-h));--ac-wash: oklch(.7 var(--ac-c) var(--ac-h) / .16);--ac-wash-strong: oklch(.7 var(--ac-c) var(--ac-h) / .28);--ac-border: oklch(.7 var(--ac-c) var(--ac-h) / .5);--code-chip-bg: oklch(.7 var(--ac-c) var(--ac-h) / .14);--code-chip-border: oklch(.7 var(--ac-c) var(--ac-h) / .4);--code-chip-ink: oklch(.78 calc(var(--ac-c) - .03) var(--ac-h))}html[data-accent=teal]{--ac-h: 190;--ac-c: .11}html[data-accent=violet]{--ac-h: 300;--ac-c: .13}html[data-accent=rose]{--ac-h: 15;--ac-c: .13}html[data-codefont=fira]{--mono: "Fira Code", ui-monospace, monospace}html[data-codefont=plex]{--mono: "IBM Plex Mono", ui-monospace, monospace}html[data-codefont=source]{--mono: "Source Code Pro", ui-monospace, monospace}html,body{margin:0;padding:0;height:100%;background:var(--bg, #f2f4f7);color:var(--ink, #131f29);font-family:var(--font-body, "Instrument Sans", system-ui, sans-serif);-webkit-font-smoothing:antialiased}*,*:before,*:after{box-sizing:border-box}h1,h2,h3{font-family:var(--font-display, "Bricolage Grotesque", 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(prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@keyframes crFloat{0%{opacity:0;transform:translateY(5px)}12%{opacity:1}68%{opacity:1}to{opacity:0;transform:translateY(-16px)}}@keyframes crSpin{to{transform:rotate(360deg)}}.crChallengeGrid{flex:1;min-height:0;display:grid;grid-template-columns:minmax(340px,420px) minmax(0,1fr);grid-template-rows:minmax(0,1fr)}.crChallengeBrief{border-right:1px solid var(--line, #e2e8ee);overflow-y:auto;padding:22px 22px 28px;display:flex;flex-direction:column;gap:4px;background:var(--surface, #fff)}@media (max-width: 700px){.crChallengeGrid{grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(320px,1fr);overflow-y:auto}.crChallengeBrief{border-right:none;border-bottom:1px solid var(--line, #e2e8ee);overflow-y:visible;padding:18px 16px 22px}}.crHeader{flex:none;display:flex;align-items:center;gap:14px;min-height:52px;padding:0 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