/* Northia · sección 47,5. Depende de las variables de northia-global.css */
.nh475 { background: var(--nh-negro); padding: clamp(72px,9vw,120px) 0 clamp(64px,8vw,100px); }
.nh475-track { position: relative; min-height: 250vh; }
.nh475-sticky { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; justify-content: center; }
.nh475-wrap { max-width: 1320px; margin: 0 auto; width: 100%; padding: 0 clamp(20px,4vw,40px); }
.nh475-cabecera { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.nh475-kicker { margin: 0 0 18px; font: 400 11px/1.4 var(--nh-mono); letter-spacing: .24em; text-transform: uppercase; color: var(--nh-dorado); }
.nh475 h2 { margin: 0; max-width: 20ch; font-family: var(--nh-display); font-variation-settings: 'wdth' 108; font-weight: 700; letter-spacing: -.028em; line-height: 1.03; font-size: clamp(1.9rem,4.2vw,3.4rem); color: #fff; }
.nh475-contador { text-align: right; min-width: 210px; }
.nh475-cm { margin: 0; font: 500 clamp(2.4rem,5.2vw,3.9rem)/1 var(--nh-mono); color: var(--nh-dorado); }
.nh475-estado { margin: 6px 0 0; font: 400 10px/1.5 var(--nh-mono); letter-spacing: .2em; text-transform: uppercase; color: rgba(233,229,222,.6); }
.nh475-intro { margin: 20px 0 0; max-width: 62ch; color: rgba(233,229,222,.74); font-size: 1rem; }

.nh475-frame { position: relative; aspect-ratio: 12/5; overflow: hidden; background: var(--nh-negro); margin-top: clamp(18px,2.4vw,34px); }
.nh475-escena { position: absolute; left: -76.92%; top: -102.07%; width: 192.31%; height: 346.02%; }
.nh475-escena img { width: 100%; height: 100%; object-fit: fill; display: block; }
.nh475-vineta { position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg,var(--nh-negro),rgba(14,15,17,0) 7%,rgba(14,15,17,0) 94%,var(--nh-negro)),
              linear-gradient(180deg,var(--nh-negro),rgba(14,15,17,0) 11%,rgba(14,15,17,0) 86%,rgba(14,15,17,.97)); }
.nh475-fase { position: absolute; left: clamp(14px,2vw,26px); top: clamp(10px,1.6vw,16px); margin: 0; padding: 7px 11px;
  background: rgba(14,15,17,.5); border-left: 2px solid rgba(185,145,84,.8); opacity: 0;
  font: 400 9.5px/1.4 var(--nh-mono); letter-spacing: .2em; text-transform: uppercase; color: var(--nh-champan); pointer-events: none; }

.nh475-chips { display: flex; flex-wrap: wrap; gap: 1px; margin-top: 1px; background: rgba(185,145,84,.22); }
.nh475-chip { flex: 1 1 130px; background: var(--nh-carbon); border: 0; padding: 13px 14px; cursor: pointer; text-align: left;
  display: flex; gap: 9px; align-items: baseline; color: var(--nh-hueso); font: 400 9.5px/1.5 var(--nh-mono); letter-spacing: .12em; text-transform: uppercase; transition: background .25s, color .25s; }
.nh475-chip span:first-child { font-size: 11px; color: var(--nh-dorado); }
.nh475-chip:hover { background: #1f2226; }
.nh475-chip.is-active { background: #242830; color: #fff; }

.nh475-cards { max-width: 1320px; margin: clamp(30px,4vw,50px) auto 0; padding: 0 clamp(20px,4vw,40px);
  display: grid; grid-template-columns: repeat(auto-fit,minmax(260px,1fr)); gap: 1px; background: rgba(185,145,84,.22); }
.nh475-card { background: var(--nh-carbon); padding: 24px; cursor: pointer; text-align: left; border: 0; transition: background .3s, box-shadow .3s; }
.nh475-card h3 { margin: 0 0 10px; font: 400 10px/1.5 var(--nh-mono); letter-spacing: .2em; color: var(--nh-dorado); }
.nh475-card p { margin: 0; color: rgba(233,229,222,.8); font-size: .95rem; }
.nh475-card:hover { background: #1d2024; }
.nh475-card.is-active { background: #1E2126; box-shadow: inset 2px 0 0 var(--nh-dorado); }

.nh475-pie { max-width: 1320px; margin: 22px auto 0; padding: 0 clamp(20px,4vw,40px); display: flex; justify-content: space-between;
  gap: 20px; flex-wrap: wrap; align-items: center; font: 400 10px/1.6 var(--nh-mono); letter-spacing: .14em; text-transform: uppercase; color: rgba(233,229,222,.42); }

@media (max-width: 720px) {
  .nh475-frame { aspect-ratio: 4/3; }
  .nh475-escena { left: -118.18%; top: -56.82%; width: 227.27%; height: 227.27%; }
  .nh475-track { min-height: 220vh; }
}
@media (prefers-reduced-motion: reduce) {
  .nh475-track { min-height: 0; }
  .nh475-sticky { position: static; height: auto; }
}
/* three.js no disponible: queda el render cerrado, sin hueco ni error visible */
.nh475-sin-3d muro-3d { display: none; }