* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: #05070a;
  color: #f4f6f8;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  display: block;
  max-width: 100%;
}
:root {
  --gap: 5px;
  --gold: #d69a42;
  --panel: #08101a;
}
.topbar {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(24px, 4vw);
  background: rgba(5, 7, 10, 0.97);
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
}
.brand {
  font-weight: 800;
  letter-spacing: 0.08em;
}
.brand small {
  display: block;
  font-size: 0.52rem;
  letter-spacing: 0.42em;
  margin-top: 1px;
  color: #b9c0c8;
}
.nav {
  display: flex;
  gap: 1.35rem;
  font-size: 0.69rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
}
.eyebrow {
  font-size: 0.67rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-weight: 700;
  color: #d1d6db;
}
.button {
  display: inline-block;
  margin-top: 1.25rem;
  border: 1px solid rgba(214, 154, 66, 0.75);
  padding: 0.72rem 1rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.67rem;
  font-weight: 700;
  color: #f4f6f8;
}
.button:hover {
  background: var(--gold);
  color: #07101a;
}
.footer {
  padding: 2.2rem 5vw;
  text-align: center;
  color: #8f98a3;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.78rem;
}
/* Compact editorial landing page */
.landing-page {
  background: radial-gradient(
    circle at 15% 20%,
    #0a263d 0,
    #07131f 33%,
    #05070a 72%
  );
}
.landing-page main {
  max-width: 1600px;
  margin: 0 auto;
  background: rgba(3, 8, 13, 0.62);
}
.landing-hero {
  position: relative;
  height: clamp(420px, 54vw, 690px);
  overflow: hidden;
}
.landing-hero > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 43%;
}
.landing-hero:after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
      0deg,
      rgba(2, 8, 14, 0.92) 0,
      rgba(2, 8, 14, 0.18) 55%,
      rgba(2, 8, 14, 0.08)
    ),
    linear-gradient(90deg, rgba(2, 8, 14, 0.32), transparent 55%);
}
.landing-hero-copy {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 5.5rem;
  transform: translateX(-50%);
  width: min(1100px, 90%);
  text-align: center;
}
.landing-hero h1 {
  font-size: clamp(2.35rem, 5vw, 5.2rem);
  line-height: 1;
  margin: 0.35rem 0 0.65rem;
  letter-spacing: 0.015em;
  text-transform: uppercase;
}
.landing-hero-copy > p:last-child {
  margin: 0;
  color: #d7dde3;
  font-size: clamp(0.78rem, 1.2vw, 1rem);
}
.landing-intro {
  text-align: center;
  padding: 2.5rem max(24px, 6vw) 2.8rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.landing-intro h2 {
  font-size: clamp(1.7rem, 3vw, 3rem);
  line-height: 1.12;
  margin: 0 auto 0.75rem;
  max-width: 1050px;
}
.landing-intro p {
  margin: 0 auto;
  max-width: 870px;
  color: #c0c8d0;
}
.landing-category {
  display: grid;
  grid-template-columns: minmax(220px, 320px) 1fr;
  gap: 2rem;
  padding: 1.3rem max(20px, 2.2vw);
  border-bottom: 1px solid rgba(255, 255, 255, 0.11);
  align-items: stretch;
}
.landing-copy {
  padding: 1rem 0.4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.landing-copy h2 {
  font-size: clamp(1.8rem, 3vw, 3.2rem);
  line-height: 1.02;
  margin: 0.25rem 0 0.75rem;
}
.landing-copy p:not(.eyebrow) {
  color: #c0c8d0;
  margin: 0;
  max-width: 290px;
}
.landing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: repeat(2, clamp(130px, 13vw, 225px));
  gap: var(--gap);
}
.landing-grid a {
  overflow: hidden;
  background: #111;
}
.landing-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s, filter 0.35s;
}
.landing-grid a:hover img {
  transform: scale(1.025);
  filter: brightness(0.9);
}
/* Gallery pages */
.breadcrumbs {
  max-width: 1800px;
  margin: auto;
  padding: 0.8rem 1.25rem;
  color: #9da6af;
  font-size: 0.75rem;
}
.gallery-header {
  max-width: 1120px;
  margin: auto;
  text-align: center;
  padding: 3rem 1.25rem 2.6rem;
}
.gallery-header h1 {
  font-size: clamp(2.7rem, 5vw, 5.6rem);
  line-height: 0.96;
  margin: 0;
}
.gallery-header p {
  color: #b6bec7;
  max-width: 850px;
  margin: 1rem auto 0;
}
.justified-gallery {
  width: 100%;
  padding: var(--gap);
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap);
  align-items: flex-start;
}
.gallery-item {
  margin: 0;
  position: relative;
  overflow: hidden;
  background: #111;
  flex: 0 0 auto;
}
.gallery-link {
  display: block;
  width: 100%;
  height: 100%;
  cursor: zoom-in;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.25s, filter 0.25s;
}
.gallery-item:hover img {
  transform: scale(1.025);
  filter: brightness(0.9);
}
.gallery-item figcaption {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.97);
  z-index: 100;
  display: none;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  padding: 2.75rem 1rem 1.25rem;
  overflow-y: auto;
}
.lightbox.open {
  display: grid;
}
.lightbox-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 0;
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
  padding-bottom: 1rem;
}
.lightbox img {
  display: block;
  max-height: calc(100vh - 12rem);
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}
.lightbox-caption {
  width: 100%;
  max-width: 1200px;
  margin: 0.9rem auto 0;
  padding: 0 0.4rem;

  color: #d0d5da;
  text-align: center;

  font-size: clamp(0.95rem, 0.35vw + 0.8rem, 1.1rem);
  line-height: 1.5;
}
.lightbox button {
  background: none;
  border: 0;
  color: white;
  font-size: 2.4rem;
  cursor: pointer;
}
.lightbox-close {
  position: absolute;
  right: 1rem;
  top: 0.5rem;
}
.backlink {
  text-align: center;
  padding: 1.8rem;
}
.backlink a {
  border-bottom: 1px solid #aaa;
}
@media (max-width: 900px) {
  .nav {
    display: none;
  }
  .landing-category {
    grid-template-columns: 1fr;
  }
  .landing-copy p:not(.eyebrow) {
    max-width: none;
  }
  .landing-grid {
    grid-template-rows: repeat(2, clamp(120px, 28vw, 220px));
  }
}
@media (max-width: 600px) {
  .landing-hero {
    height: 430px;
  }
  .landing-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(3, 150px);
  }
  .lightbox {
    grid-template-columns: 1fr;
    padding: 2.75rem 0.6rem 1rem;
  }

  .lightbox img {
    max-height: calc(100vh - 15rem);
  }

  .lightbox-caption {
    text-align: left;
    font-size: 0.82rem;
  }
  .lightbox-prev,
  .lightbox-next {
    position: absolute;
    top: 50%;
  }
  .lightbox-prev {
    left: 0;
  }
  .lightbox-next {
    right: 0;
  }
}

/* Homepage exhibition cards: fixed desktop presentation matching Rocky and Carrier Operations. */
@media (min-width: 901px) {
  .landing-page main {
    max-width: none;
    background: rgba(3, 8, 13, 0.62);
  }
  .landing-category {
    grid-template-columns: 250px 720px;
    gap: 30px;
    width: 1000px;
    margin: 0 auto;
    padding: 30px 0;
    align-items: center;
  }
  .landing-copy {
    padding: 0;
  }
  .landing-copy h2 {
    font-size: 2.15rem;
  }
  .landing-grid {
    width: 720px;
    height: 360px;
    grid-template-columns: repeat(3, 240px);
    grid-template-rows: repeat(2, 180px);
    gap: 4px;
  }
  .landing-grid a {
    width: 240px;
    height: 180px;
  }
}