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.dk-step-title{margin-top:2px;font-family:var(--font-dm-sans),var(--font-inter),sans-serif;font-size:1.25rem;font-weight:700;letter-spacing:-.02em;color:var(--lv4-text)}.lv4 .dk-step-body{margin-top:6px;max-width:64ch;font-size:.9375rem;line-height:1.55;color:var(--lv4-mute)}.lv4 .dk-step .lib-rail{margin-top:14px}.lv4 .dk-step .dk-path{margin-top:10px}.lv4 .dk-step .dk-step{grid-template-columns:36px minmax(0,1fr);padding-block:16px}.lv4 .dk-step .dk-step .dk-step-n{width:32px;height:32px;font-size:.875rem}.lv4 .dk-preview{scroll-margin-top:calc(var(--lv4-nav-h) + 16px);padding-bottom:clamp(36px,5vw,64px)}.lv4 .dk-preview .dk-section-head{margin-bottom:18px}.lv4 .dk-cards{display:flex;gap:16px;padding-block:4px 18px}.lv4 .dk-cards>li{flex:0 0 min(320px,82vw);scroll-snap-align:start}.lv4 .dk-card-pos{display:block;margin-bottom:8px;font-size:.8125rem;font-weight:600;color:var(--lv4-mute)}.lv4 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.dk-face-label{font-size:.75rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--lv4-ink)}.lv4 .dk-face-text{flex:1 1 auto;font-size:1.0625rem;line-height:1.5;font-weight:550;color:var(--lv4-text);white-space:pre-line}.lv4 .dk-face-text mark{padding:0 3px;border-radius:5px;background:var(--lv4-brand-soft);color:var(--lv4-ink);font-weight:700}.lv4 .dk-face-hint{display:inline-flex;align-items:center;gap:6px;font-size:.8125rem;font-weight:600;color:var(--lv4-mute)}.lv4 .dk-face-hint svg{width:15px;height:15px}.lv4 .dk-media{position:relative;width:100%;aspect-ratio:16/10;overflow:hidden;border-radius:14px;background:var(--lv4-fill)}.lv4 .dk-media img{-o-object-fit:contain;object-fit:contain}@media (prefers-reduced-motion:reduce){.lv4 .dk-flip-inner{transition:none;transform:none!important}.lv4 .dk-face[data-side=back]{transform:none}.lv4 .dk-flip[aria-pressed=false] .dk-face[data-side=back],.lv4 .dk-flip[aria-pressed=true] 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