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var(--color-border);background:var(--n-950);color:var(--n-50)}.response-viewer>div:first-child{display:flex;justify-content:space-between;padding:13px 18px;border-bottom:1px solid var(--n-700);font-size:10px;font-weight:800;letter-spacing:.08em}.response-viewer b{color:var(--success-200)}.response-viewer b i{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--success-500)}.response-viewer>pre{overflow:auto;margin:0;padding:30px;color:var(--brand-300);font:13px/1.7 var(--font-mono)}.response-empty{display:grid;place-items:center;min-height:230px;margin:0;color:var(--n-500);text-align:center;line-height:1.7}.response-loading{display:flex!important;justify-content:center!important;align-items:center;gap:5px;min-height:230px;border:0!important;color:var(--n-400);letter-spacing:0!important}.response-loading i{width:8px;height:8px;background:var(--brand-300);animation:loading-dot 1s infinite}.response-loading i:nth-child(2){animation-delay:.15s}.response-loading i:nth-child(3){animation-delay:.3s}.quiz-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:18px;gap:18px}.quick-question{margin:0;padding:22px;border:var(--border-w) solid var(--color-border);background:var(--color-surface);box-shadow:var(--shadow-sm)}.quick-question legend{display:flex;gap:12px;min-height:74px;padding:0 4px;font-weight:800;line-height:1.45}.quick-question legend span{display:grid;place-items:center;flex:none;width:28px;height:28px;background:var(--color-accent);color:var(--color-fg-on-accent);border:2px solid var(--color-border)}.quick-question button{display:flex;justify-content:space-between;width:100%;margin-top:9px;padding:12px;border:2px solid var(--color-border);background:var(--color-surface-sunken);color:var(--color-fg);font:600 12px var(--font-body);text-align:left;cursor:pointer}.quick-question button:hover{background:var(--color-brand-subtle)}.quick-question button.is-correct{background:var(--color-success-subtle);color:var(--color-success-fg)}.quick-question button.is-wrong{background:var(--color-danger-subtle);color:var(--color-danger-fg)}.quick-question>p{margin:14px 0 0;font-size:10px;line-height:1.5}.feedback-ok{color:var(--color-success-fg)}.feedback-no{color:var(--color-danger-fg)}.lesson-summary{display:grid;grid-template-columns:auto 1fr auto;align-items:center;grid-gap:24px;gap:24px;margin-top:30px;padding:28px;border:var(--border-w) solid var(--color-border);background:var(--color-surface-sunken)}.lesson-summary>div:first-child{display:grid;place-items:center;width:76px;height:76px;border:var(--border-w) solid var(--color-border);background:var(--color-surface);font-size:22px;font-weight:900}.lesson-summary.is-complete>div:first-child{background:var(--color-brand)}.lesson-summary p{margin:0 0 5px;font-size:9px;font-weight:900;letter-spacing:.1em}.lesson-summary h3{margin:0 0 7px}.lesson-summary small{color:var(--color-fg-muted);line-height:1.5}.lesson-footer{display:flex;align-items:center;gap:18px;padding:36px 0 50px;color:var(--color-fg-muted);font-size:11px}.lesson-footer strong{color:var(--color-fg);font-size:16px}.lesson-footer a{margin-left:auto;color:var(--color-fg);font-weight:800}@keyframes loading-dot{50%{transform:translateY(-5px)}}@media(max-width:900px){.simulator{grid-template-columns:1fr}.endpoint-list{border-right:0;border-bottom:var(--border-w) solid var(--color-border)}.endpoint-list button{display:inline-grid;width:calc(50% - 6px);vertical-align:top}.quiz-grid{grid-template-columns:1fr}.quick-question legend{min-height:0}.lesson-summary{grid-template-columns:auto 1fr}.lesson-summary .btn{grid-column:span 2}}@media(max-width:600px){.lab-section{padding-inline:14px}.endpoint-list button{width:100%}.request-console{padding:16px}.request-builder{grid-template-columns:auto 1fr}.request-builder small{display:none}.request-builder button{grid-column:span 2;min-height:48px;border-left:0;border-top:var(--border-w) solid var(--color-border)}.lesson-summary{grid-template-columns:1fr}.lesson-summary .btn{grid-column:auto}.lesson-footer span{display:none}}