nav.concept-jump{display:flex;flex-direction:row;flex-wrap:wrap;gap:8px;border:0;padding:0;margin:20px 0 32px;max-height:none;overflow:visible}
nav.concept-jump a{display:inline-flex;align-items:center;min-height:44px;padding:6px 12px;border:1px solid var(--line);font-size:13px;border-radius:6px}
.concept-section{border-top:1px solid var(--line);padding-top:24px;margin-top:28px;scroll-margin-top:24px}
.concept-section h2{font-size:21px;margin:0 0 18px}
.concept-panels{display:grid;grid-template-columns:repeat(var(--concept-cols),minmax(0,1fr));gap:24px}
.concept-panel{display:flex;align-items:flex-start;gap:12px;min-width:0}
.concept-panel svg{width:42px;height:42px;flex-shrink:0;color:var(--muted)}
.concept-panel h3{font-size:15px;margin:0 0 6px;line-height:1.8}
.concept-panel p{font-size:14px;line-height:1.9;color:var(--muted);margin:0}
.concept-takeaway{font-size:14px;margin:20px 0 12px;line-height:1.9}
.concept-section details p{font-size:14px}
@media(max-width:1000px){.concept-panels{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:800px){.concept-section{scroll-margin-top:128px}}
@media(max-width:480px){.concept-panels{grid-template-columns:1fr;gap:16px}.concept-panel svg{width:36px;height:36px}.concept-section h2{font-size:19px}}