/* Nature reading pages start with the subject, not a wall of repeated tiles. */
.nature-nav{display:flex;flex-wrap:wrap;gap:0 18px;padding:0 0 8px;margin:8px 0 22px;border-bottom:1px solid var(--line)}.nature-nav a{display:inline-flex;align-items:center;gap:7px;min-height:44px;padding:8px 0;color:var(--muted);font-size:15px;text-decoration:none;line-height:1.4}.nature-nav a:hover,.nature-nav a[aria-current]{color:var(--green);text-decoration:underline;text-underline-offset:6px}.nature-nav a[aria-current]{font-weight:650}.nature-nav small{font-size:12px;font-variant-numeric:tabular-nums}.nature-reading .marine-title{padding-bottom:8px}.nature-reading .marine-layout{grid-template-columns:minmax(0,1fr)}.nature-reading .marine-related{display:none}.nature-reading .marine-title h1{font-size:clamp(26px,4vw,38px)}.nature-reading .marine-lead{max-width:80ch}.nature-count{color:var(--muted);font-size:15px}.nature-reading .species-directory{grid-template-columns:repeat(3,minmax(0,1fr))}@media(max-width:950px){.nature-reading .species-directory{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.nature-nav{flex-wrap:nowrap;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin}.nature-nav a{flex:none}.nature-reading .species-directory{grid-template-columns:1fr}.nature-reading .marine-title{padding-top:10px}.nature-reading .marine-breadcrumb{font-size:13px}}