.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(16px);
}
.header-inner { display: grid; min-height: 4.5rem; grid-template-columns: 1fr auto auto; align-items: center; gap: .75rem; }
.brand { display: inline-flex; align-items: center; gap: .5rem; color: var(--brand-strong); font-family: var(--font-display); font-size: 1.3rem; font-weight: 800; text-decoration: none; }
.brand-mark { display: inline-grid; width: 1.9rem; height: 1.9rem; place-items: center; border-radius: 50%; background: var(--brand); color: var(--bg); }
.brand-accent { color: var(--accent); }
.primary-navigation {
  position: absolute;
  top: 100%;
  right: 1rem;
  left: 1rem;
  display: none;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-md);
  padding: .6rem;
}
.primary-navigation.is-open { display: flex; }
.primary-navigation a { border-radius: .4rem; padding: .65rem .8rem; font-weight: 750; text-decoration: none; }
.primary-navigation a:hover, .primary-navigation a[aria-current="page"] { background: var(--brand-soft); color: var(--brand-strong); }
.header-actions { display: flex; gap: .4rem; }
.header-search { display: none; }
.hero { position: relative; overflow: hidden; padding-block: clamp(4rem, 10vw, 8rem); }
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, var(--bg) 5%, color-mix(in srgb, var(--bg) 82%, transparent) 55%, color-mix(in srgb, var(--bg) 58%, transparent)),
    url("../images/naturehub-wilderness.png") center / cover no-repeat;
  opacity: .82;
}
.hero::after {
  position: absolute;
  right: -5rem;
  bottom: -8rem;
  width: 26rem;
  height: 26rem;
  border: 1px solid color-mix(in srgb, var(--brand) 15%, transparent);
  border-radius: 50%;
  box-shadow: 0 0 0 3.5rem color-mix(in srgb, var(--brand) 5%, transparent), 0 0 0 7rem color-mix(in srgb, var(--brand) 4%, transparent);
  content: "";
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; display: grid; gap: 2rem; }
.hero-copy { max-width: 50rem; }
.hero-copy h1 em { color: var(--accent); font-weight: inherit; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }
.hero-search-card { align-self: end; max-width: 35rem; padding: 1.25rem; }
.quick-search { display: grid; gap: .8rem; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; }
.stat-card { padding: 1rem; }
.stat-number { color: var(--brand-strong); font-family: var(--font-display); font-size: clamp(1.6rem, 4vw, 2.4rem); line-height: 1; }
.stat-label { margin-top: .3rem; color: var(--text-muted); font-size: .85rem; }
.park-grid { display: grid; grid-template-columns: 1fr; gap: 1.1rem; }
.detail-hero { position: relative; min-height: min(65vh, 38rem); display: grid; align-items: end; overflow: hidden; background: var(--brand-strong); color: #fff; }
.detail-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .72; }
.detail-hero::after { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 15%, rgb(6 24 17 / 92%) 100%); content: ""; }
.detail-hero-content { position: relative; z-index: 1; padding-block: 3rem; }
.detail-hero h1 { max-width: 16ch; color: #fff; }
.detail-hero .lede { color: #e7eee8; }
.detail-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.25rem; }
.detail-layout { display: grid; gap: 1.25rem; }
.detail-main, .detail-sidebar { display: grid; align-content: start; gap: 1.25rem; }
.content-card { padding: clamp(1.1rem, 3vw, 1.7rem); }
.content-card h2 { margin-bottom: 1rem; font-size: clamp(1.45rem, 3vw, 2rem); }
.site-footer { border-top: 1px solid var(--border); background: var(--bg-soft); padding-block: var(--space-6); }
.footer-inner { display: grid; gap: 1.25rem; }
.footer-inner nav { display: flex; flex-wrap: wrap; gap: .75rem 1.25rem; }
.disclaimer { color: var(--text-muted); font-size: .84rem; }
.planner-list { display: grid; gap: 1.25rem; }
.trip-card { padding: 1.15rem; }
.trip-heading { display: flex; flex-wrap: wrap; align-items: start; justify-content: space-between; gap: 1rem; }
.trip-form { display: grid; gap: 1rem; margin-top: 1rem; }
.two-column { display: grid; gap: 1rem; }
.about-grid { display: grid; gap: 1rem; }
.static-preview { padding-top: clamp(2.5rem, 7vw, 5rem); }
.static-preview-grid { display: grid; align-items: center; gap: 1.5rem; }
.static-preview-figure { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-md); }
.static-preview-figure img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.static-preview-figure figcaption { padding: .65rem 1rem; color: var(--text-muted); font-size: .82rem; }
.static-map-preview { display: grid; gap: 1.25rem; overflow: hidden; }
.static-map-art {
  position: relative;
  min-height: 16rem;
  overflow: hidden;
  border-radius: var(--radius-md);
  background:
    radial-gradient(circle at 64% 44%, transparent 0 1.8rem, color-mix(in srgb, var(--accent) 50%, transparent) 1.9rem 2rem, transparent 2.1rem),
    repeating-radial-gradient(ellipse at 55% 55%, transparent 0 2rem, color-mix(in srgb, var(--brand) 20%, transparent) 2.05rem 2.15rem),
    linear-gradient(145deg, var(--brand-soft), var(--bg-soft));
}
.static-map-marker { position: absolute; top: 42%; left: 62%; color: var(--accent); font-size: 3rem; line-height: 1; text-shadow: 0 2px 0 var(--surface); transform: translate(-50%, -50%); }

@media (min-width: 38rem) {
  .filter-grid { grid-template-columns: 2fr repeat(2, 1fr); }
  .park-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .quick-search { grid-template-columns: 1fr auto; }
  .two-column { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr auto; }
  .footer-inner .disclaimer { grid-column: 1 / -1; }
  .architecture { grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; }
}
@media (min-width: 54rem) {
  .header-inner { grid-template-columns: auto 1fr auto; }
  .mobile-menu-button { display: none; }
  .primary-navigation { position: static; display: flex; flex-direction: row; justify-content: center; border: 0; background: transparent; box-shadow: none; padding: 0; }
  .header-search { display: inline-grid; }
  .hero-inner { grid-template-columns: minmax(0, 1.4fr) minmax(19rem, .65fr); }
  .park-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .detail-layout { grid-template-columns: minmax(0, 1.7fr) minmax(18rem, .8fr); }
  .about-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .static-preview-grid { grid-template-columns: minmax(0, .9fr) minmax(24rem, 1.1fr); }
  .static-map-preview { grid-template-columns: minmax(0, .8fr) minmax(22rem, 1.2fr); align-items: center; }
}
@media (min-width: 72rem) {
  .park-grid.grid-four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}