.trail-3d { padding-top: 145px; padding-bottom: 60px; }
.trail-3d-intro { max-width: 850px; margin-bottom: 32px; }
.trail-3d a:not(.btn) { color: var(--clr-easy); }
.trail-3d-intro h1 { font: 600 clamp(2.3rem, 5vw, 4rem)/1.08 var(--font-heading); margin: 22px 0 18px; }
.trail-3d-intro p { max-width: 660px; color: var(--clr-text-muted); font-size: 1.05rem; line-height: 1.7; }
.trail-3d-layout { display: grid; grid-template-columns: minmax(0, 2.5fr) minmax(260px, 1fr); gap: 32px; align-items: start; }
.terrain-panel { min-width: 0; }
.terrain-heading { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 16px 0; font-size: .85rem; }
.terrain-heading span { color: var(--clr-text-muted); }
.terrain-stage { position: relative; height: min(65vh, 640px); min-height: 420px; background: var(--clr-dark-surface); border: 1px solid var(--clr-border); border-radius: 12px; overflow: hidden; }
#terrain-map { position: absolute; inset: 0; }
.terrain-start { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 32px; text-align: center; background: var(--clr-dark-surface); }
.terrain-start[hidden] { display: none; }
.terrain-start h2 { font: 500 clamp(1.8rem, 3vw, 2.6rem)/1.15 var(--font-heading); }
.terrain-start p { max-width: 350px; margin: 16px 0 24px; color: var(--clr-text-muted); line-height: 1.6; }
.terrain-start small { margin-top: 16px; color: var(--clr-text-muted); }
.trail-3d button { font: 600 .85rem/1.3 var(--font-body); min-height: 44px; border: 1px solid #708078; border-radius: 8px; padding: 10px 14px; background: var(--clr-dark-card); color: var(--clr-text); cursor: pointer; }
.trail-3d #terrain-load { background: var(--clr-primary); padding: 14px 24px; font-size: 1rem; }
.trail-3d button[aria-pressed="true"] { background: var(--clr-primary-dark); border-color: var(--clr-easy); }
.trail-3d button:disabled { opacity: .5; cursor: default; }
.trail-3d :focus-visible { outline: 3px solid var(--clr-water); outline-offset: 3px; }
.terrain-controls { padding: 16px 0 4px; display: grid; gap: 12px; }
.terrain-scenes, .terrain-motion { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.terrain-motion label { display: flex; align-items: center; gap: 10px; font-size: .85rem; margin-left: auto; }
.terrain-motion input { width: 100px; min-height: 44px; accent-color: var(--clr-easy); }
#terrain-status { min-height: 2.8em; margin-top: 12px; font-size: .85rem; line-height: 1.5; }
#terrain-help, .terrain-disclaimer { font-size: .8rem; color: var(--clr-text-muted); line-height: 1.6; }
.terrain-story { padding-top: 16px; }
.terrain-story h2, .terrain-next h2 { font: 500 1.7rem/1.2 var(--font-heading); }
.terrain-story p { margin: 14px 0 22px; font-size: .95rem; line-height: 1.7; color: var(--clr-text-muted); }
.terrain-story .terrain-visit { color: var(--clr-easy); font-size: .8rem; margin-bottom: 12px; }
.terrain-story .btn { width: 100%; font-size: .85rem; }
.terrain-text-link { display: block; padding: 18px 0; font-size: .85rem; }
.terrain-route-note { border-top: 1px solid var(--clr-border); padding-top: 20px; margin-top: 8px; }
.terrain-route-note h3 { font-size: 1rem; }
.terrain-route-note p { font-size: .85rem; }
.terrain-story figure { max-width: 260px; }
.terrain-story img { display: block; width: 100%; height: auto; border-radius: 8px; }
.terrain-story figcaption { font-size: .75rem; color: var(--clr-text-muted); margin-top: 10px; line-height: 1.5; }
.terrain-next { border-top: 1px solid var(--clr-border); margin-top: 48px; padding: 32px 0; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.terrain-next p { margin-top: 12px; color: var(--clr-text-muted); max-width: 600px; }
.terrain-next .btn { flex-shrink: 0; }
.terrain-pin { padding: 7px 10px; border: 2px solid #fff; border-radius: 20px; background: #1b4332; color: #fff; font: 600 12px var(--font-body); box-shadow: 0 3px 14px #0008; }
.trail-3d .maplibregl-ctrl button { min-height: 36px; padding: 0; border: 0; border-radius: 0; background: #fff; }
.trail-3d .maplibregl-ctrl-attrib { max-width: 100%; font: 11px/1.5 var(--font-body); color: #222; }
.trail-3d .maplibregl-ctrl-attrib a { color: #222; }
@media(max-width: 900px) { .trail-3d-layout { grid-template-columns: 1fr; } .terrain-story { display: block; max-width: 650px; } .terrain-story .btn { width: auto; } .terrain-story figure { max-width: 220px; } }
@media(max-width: 600px) { .trail-3d { padding-top: 120px; } .terrain-stage { height: 55vh; min-height: 340px; } .terrain-motion label { margin-left: 0; } .terrain-next { flex-direction: column; align-items: flex-start; } .terrain-scenes button { flex: 1; } }
@media(prefers-reduced-motion: reduce) { .trail-3d * { scroll-behavior: auto; } }