:root {
  --teal: #0b3d3a;
  --teal-2: #0f766e;
  --mist: #eef5f3;
  --ink: #10211f;
  --muted: #5c6f6c;
  --line: #d7e4e1;
  --white: #fff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  background: #f6faf8;
}
.top {
  position: sticky; top: 0; z-index: 20;
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 28px;
  background: rgba(11,61,58,.96);
  color: #e8f6f2;
  backdrop-filter: blur(10px);
}
.brand { display: flex; gap: 12px; align-items: center; }
.mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: #99f6e4; color: var(--teal);
  display: grid; place-items: center;
  font-family: Arial, sans-serif; font-weight: 800;
}
.brand span { display: block; font-size: 12px; opacity: .72; font-family: Arial, sans-serif; }
nav { display: flex; gap: 18px; align-items: center; font-family: Arial, sans-serif; font-size: 13px; }
nav a { color: #d7efea; text-decoration: none; }
.cta {
  background: #99f6e4; color: var(--teal) !important;
  padding: 8px 12px; border-radius: 999px; font-weight: 700;
}
.hero, .groups, footer { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.hero { padding: 64px 0 28px; }
.eyebrow {
  letter-spacing: .16em; text-transform: uppercase;
  font-family: Arial, sans-serif; font-size: 12px; color: var(--teal-2);
}
h1 { font-size: clamp(32px, 5vw, 54px); line-height: 1.1; margin: 8px 0 16px; font-weight: 500; }
.lead { font-size: 20px; line-height: 1.5; max-width: 720px; color: #314844; }
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  margin-top: 36px;
}
.stats div {
  background: var(--white); border: 1px solid var(--line);
  border-radius: 16px; padding: 16px 18px;
}
.stats b { display: block; font-size: 18px; }
.stats span { font-family: Arial, sans-serif; font-size: 12px; color: var(--muted); }
.groups article { margin: 28px 0 48px; }
.groups h2 { font-size: 28px; font-weight: 500; margin-bottom: 14px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
}
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  padding: 0;
  font: inherit;
  color: inherit;
  box-shadow: 0 8px 24px rgba(16,33,31,.04);
}
.card:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(16,33,31,.08); }
.card img { width: 100%; height: 150px; object-fit: cover; object-position: top; display: block; background: #dde8e5; }
.card figcaption { padding: 12px 14px 14px; }
.card strong { display: block; font-size: 15px; }
.card small { font-family: Arial, sans-serif; color: var(--muted); font-size: 12px; }
footer { padding: 20px 0 60px; color: var(--muted); font-family: Arial, sans-serif; font-size: 12px; }
.lightbox {
  position: fixed; inset: 0; background: rgba(7,24,23,.92);
  display: grid; grid-template-columns: 56px 1fr 56px; align-items: center;
  z-index: 40; padding: 24px 8px;
}
.lightbox[hidden] { display: none; }
.stage { max-width: 1200px; margin: 0 auto; width: 100%; }
.stage img {
  width: 100%; max-height: 72vh; object-fit: contain;
  background: #081c1b; border-radius: 12px;
}
.meta { color: #eaf6f3; margin-bottom: 10px; font-family: Arial, sans-serif; }
.meta span { opacity: .6; font-size: 12px; }
.meta h3 { margin: 4px 0; font-family: Georgia, serif; font-size: 24px; font-weight: 500; }
.meta p { margin: 0; opacity: .8; }
.nav, .close {
  border: 0; background: transparent; color: #fff;
  font-size: 42px; cursor: pointer;
}
.close {
  position: absolute; top: 16px; right: 18px;
  font-size: 14px; font-family: Arial, sans-serif;
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 999px; padding: 8px 12px;
}
@media (max-width: 800px) {
  .stats { grid-template-columns: 1fr 1fr; }
  nav a:not(.cta) { display: none; }
  .lightbox { grid-template-columns: 1fr; }
  .nav { position: absolute; bottom: 12px; }
  .prev { left: 10px; } .next { right: 10px; }
}