.app-frame{--app-rail:230px;background:var(--bg);min-height:100dvh}.app-workspace{margin-left:var(--app-rail);min-width:0;container:workspace/inline-size}.app-workspace>main{min-width:0;min-height:100dvh}.app-workspace:focus{outline:none}.app-page-container{width:100%;max-width:1120px;margin-inline:auto;padding:32px 36px 80px}.app-workspace .product-heading{border-bottom:2px solid var(--line);max-width:none;margin-bottom:26px;padding:24px 0 28px}.app-workspace .product-heading h1{letter-spacing:-.04em;font-size:clamp(26px,3vw,38px);font-weight:800;line-height:1.2}.app-workspace .product-heading p{max-width:65ch;font-size:14px;line-height:1.7}.app-workspace .card,.app-workspace .ui-surface{box-shadow:none;border-width:2px;border-radius:18px}.app-frame .ui-action:not([data-variant=quiet]),.app-workspace .btn-primary,.app-workspace .btn-ghost{border:2px solid var(--line-strong);min-height:46px;font-family:var(--font-body);letter-spacing:0;box-shadow:none;border-bottom-width:5px;border-radius:13px;font-weight:800;line-height:1.4;transition:transform .12s,background-color .12s}.app-frame .ui-action[data-variant=primary],.app-workspace .btn-primary{border-color:color-mix(in srgb, var(--practice) 62%, var(--bg));background:var(--practice);color:var(--practice-contrast)}.app-workspace .btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line)}.app-frame .ui-action:not([data-variant=quiet]):active:not(:disabled),.app-workspace .btn-primary:active:not(:disabled),.app-workspace .btn-ghost:active:not(:disabled){transform:translateY(3px)}.app-workspace .btn-primary:hover{filter:none;box-shadow:none}.app-frame .ui-action[data-variant=quiet]{gap:10px}.app-workspace .next-action{border:2px solid var(--line);background:var(--surface);box-shadow:none;border-radius:18px}.page-intro{justify-content:space-between;align-items:center;gap:24px;display:flex}.page-intro>div{min-width:0}.page-intro .intro-mascot{object-fit:contain;flex-shrink:0;width:92px;height:92px}.page-intro-actions{flex-wrap:wrap;gap:12px;margin-top:16px;display:flex}.app-workspace .practice-hero-copy{border-bottom:2px solid var(--line);margin-bottom:24px;padding-bottom:24px}.app-workspace .practice-hero-copy h1{letter-spacing:-.04em;font-size:clamp(26px,3vw,38px);font-weight:800}.app-workspace .practice-hero-copy .eyebrow{display:none}.app-workspace .practice-mode-tabs{border-width:2px;border-radius:15px}.app-workspace .practice-mode-tabs button{border-radius:11px;min-height:48px;font-weight:800}.app-workspace .practice-brief,.app-workspace .practice-mission-list,.app-workspace .practice-editor-shell,.app-workspace .practice-output{border-width:2px;border-radius:18px}.app-workspace .practice-mission-options>button[data-active=true]{background:color-mix(in srgb, var(--practice) 12%, var(--surface))}.app-workspace .practice-ladder>div>span{width:30px;height:30px;box-shadow:0 3px 0 var(--line);border-width:2px}.app-workspace .chapter-panel{border:2px solid var(--line);box-shadow:none;border-radius:18px}.app-workspace .chapter-panel-header{border-bottom-width:2px}.app-workspace .chapter-index,.app-workspace .level-number{box-shadow:0 4px 0 var(--line);font-family:var(--font-body);border-width:2px;border-radius:50%}.app-workspace .level-number[data-state=done],.app-workspace .chapter-index[data-complete]{color:#4d350a;background:#f3c365;border-color:#f3c365;box-shadow:0 4px #a77528}.app-workspace .level-number[data-state=current]{background:var(--practice);color:var(--practice-contrast);border-color:var(--practice);box-shadow:0 4px 0 color-mix(in srgb, var(--practice) 50%, var(--bg))}.app-workspace .level-card{box-shadow:none;border-width:2px 2px 5px;border-radius:15px}.app-workspace .level-card.is-current{border-color:var(--practice)}.app-workspace .level-card.is-locked{opacity:1;filter:none;border-style:dashed}.review-route{gap:16px;margin-top:22px;padding:0;list-style:none;display:grid}.review-route>li{grid-template-columns:52px minmax(0,1fr);align-items:start;gap:16px;display:grid}.review-step{border:2px solid var(--line-strong);background:var(--surface-2);width:48px;height:45px;color:var(--ink-dim);box-shadow:0 5px 0 var(--line);border-radius:50%;place-items:center;margin-top:24px;font-weight:800;display:grid}.review-route>li:first-child .review-step{background:var(--practice);color:var(--practice-contrast);border-color:var(--practice)}.review-route .card{display:block}.app-workspace .report-empty{max-width:680px;margin-inline:auto}.report-empty img{width:112px;height:112px;margin:auto}@media (max-width:1140px){.app-frame{--app-rail:200px}}@media (max-width:950px){.app-frame{--app-rail:0px}.app-workspace>main{min-height:calc(100dvh - 130px)}}@media (max-width:720px){.app-page-container{padding:22px 18px 72px}}@media (max-width:600px){.page-intro{gap:12px}.page-intro .intro-mascot{width:64px;height:64px}.app-workspace .product-heading{padding-top:12px}.app-workspace .product-heading h1{font-size:26px}.review-route>li{grid-template-columns:38px minmax(0,1fr);gap:10px}.review-step{width:36px;height:34px;font-size:13px}.app-workspace .practice-mission-search{margin-inline:8px}}@container workspace (max-width:1100px){.practice-layout{grid-template-columns:minmax(0,1fr)}.practice-mission-list{max-height:none;overflow:hidden}.practice-mission-options{gap:8px;padding:10px;display:flex;overflow-x:auto}.practice-mission-options>button{border:2px solid var(--line);border-radius:12px;flex:none;width:220px}.practice-split,.free-lab-split{grid-template-columns:minmax(0,1fr)}}@media (prefers-reduced-motion:reduce){.app-frame .ui-action,.app-workspace .btn-primary,.app-workspace .btn-ghost{transition:none}}@media print{.app-frame{--app-rail:0px}.app-frame>header{display:none}.app-workspace{container-type:normal}}
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