.lab-preview-card{display:flex;align-items:center;justify-content:space-between;gap:48px;border:1px solid var(--line);background:var(--panel);padding:42px;border-radius:8px}
.lab-preview-card h2{font-size:clamp(30px,3.6vw,48px);margin:0 0 20px}
.lab-preview-card p{max-width:620px;color:var(--muted);font-size:15px;line-height:1.85;margin:0 0 22px}
.lab-preview-card .button{flex-shrink:0;white-space:normal;max-width:280px}
.playground-breadcrumb{padding-top:32px}
.playground-page .portfolio-return{display:inline-flex;align-items:center;gap:12px;min-height:44px;padding:12px 17px;border:1px solid #465449;border-radius:6px;background:var(--panel);color:var(--text);font:500 12px/1.5 var(--sans)}
.playground-page .portfolio-return svg{color:var(--accent)}
.playground-page .portfolio-return:hover{border-color:var(--accent);color:var(--accent)}
.playground-page .portfolio-return:focus-visible,.playground-page .lab-node:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.playground-intro{padding-top:56px;padding-bottom:60px;border-bottom:1px solid var(--line)}
.playground-intro h1{font-size:clamp(38px,5vw,72px);line-height:1.1;letter-spacing:-2px;margin:24px 0}
.playground-intro h1 em{font-family:Georgia,serif;font-weight:400;color:var(--accent)}
.playground-intro>p{max-width:670px;color:var(--muted);font-size:17px;line-height:1.85;margin-bottom:28px}
.playground-page .lab-section{padding-top:64px}
.playground-page .lab-detail{min-width:0}
.playground-page .lab-map{min-width:0}
.playground-next{display:flex;justify-content:space-between;align-items:center;gap:40px;padding:32px 0 64px;border-bottom:1px solid var(--line)}
.playground-next h2{font-size:clamp(26px,3vw,40px);margin:16px 0}
.playground-next p{color:var(--muted);font-size:15px;line-height:1.8;max-width:570px}
.playground-next .button{flex-shrink:0}
@media(max-width:980px){.lab-preview-card{flex-direction:column;align-items:flex-start;gap:26px;padding:30px}.playground-next{flex-direction:column;align-items:flex-start;gap:20px}}
@media(max-width:700px){.lab-preview-card{padding:24px;gap:24px}.lab-preview-card p{font-size:14px}.lab-preview-card .button{width:100%;max-width:none;justify-content:space-between;min-height:48px;font-size:12px;padding:16px}.playground-breadcrumb{padding-top:24px}.playground-intro{padding-top:36px;padding-bottom:40px}.playground-intro h1{letter-spacing:-1.3px}.playground-intro>p{font-size:15px}.playground-page .lab-section{padding-top:44px}.playground-page .lab-workspace{grid-template-columns:minmax(0,1fr)}.playground-page .lab-node{width:100%;min-width:0}.playground-page .lab-node strong{overflow-wrap:anywhere}.playground-next{padding-bottom:40px}.playground-next .button{min-height:48px}.playground-page .lab-map-label{flex-wrap:wrap}}