:root {
  --ink: #172322;
  --paper: #f7f5ef;
  --reef: #0d6b68;
  --coral: #d94835;
  --sun: #f2b84b;
  --line: #ccd6d0;
  --white: #fff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: inherit; }
img { display: block; width: 100%; object-fit: cover; }
.shell { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.topbar { background: var(--ink); color: var(--white); }
.nav { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { font-weight: 800; text-decoration: none; font-size: 1.15rem; }
.brand span { color: var(--sun); }
.links { display: flex; gap: 22px; flex-wrap: wrap; }
.links a { text-decoration: none; color: #dce8e4; font-size: .92rem; }
.links a:hover, .links a[aria-current="page"] { color: var(--sun); }
.hero { min-height: 560px; color: var(--white); display: grid; align-items: end; background: linear-gradient(90deg, rgba(10,25,24,.86), rgba(10,25,24,.18)), url("assets/red-king-crab.jpg") center/cover; }
.hero-copy { max-width: 720px; padding: 96px 0 72px; }
.eyebrow { margin: 0 0 12px; color: var(--sun); text-transform: uppercase; font-weight: 800; font-size: .78rem; letter-spacing: .12em; }
h1, h2, h3 { margin: 0; line-height: 1.08; }
h1 { font-size: clamp(3rem, 8vw, 6.8rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: 1.25rem; }
.lead { font-size: 1.2rem; max-width: 660px; }
.button { display: inline-flex; margin-top: 18px; padding: 12px 18px; background: var(--coral); color: var(--white); font-weight: 750; text-decoration: none; border: 1px solid transparent; }
.button:hover { background: #bd3829; }
.band { padding: 76px 0; }
.band.alt { background: var(--white); }
.intro-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 60px; align-items: start; }
.fact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.fact { min-height: 210px; padding: 28px; background: var(--white); }
.fact strong { display: block; color: var(--coral); font-size: 2.2rem; line-height: 1; margin-bottom: 18px; }
.page-head { padding: 76px 0 52px; background: var(--reef); color: var(--white); }
.page-head p { max-width: 680px; }
.story { display: grid; grid-template-columns: 1.08fr .92fr; gap: 48px; align-items: center; margin-bottom: 72px; }
.story.reverse { grid-template-columns: .92fr 1.08fr; }
.story img { aspect-ratio: 4 / 3; }
.story-text p:last-child { margin-bottom: 0; }
.species-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.species { border-top: 5px solid var(--reef); padding-top: 20px; }
.species small { color: var(--coral); font-weight: 700; }
.callout { padding: 28px; border-left: 6px solid var(--sun); background: #fff8e5; }
.source-list li { margin-bottom: 10px; }
footer { padding: 36px 0; background: var(--ink); color: #bfceca; font-size: .9rem; }
footer a { color: var(--sun); }

@media (max-width: 760px) {
  .nav { align-items: flex-start; flex-direction: column; padding: 18px 0; }
  .links { gap: 12px 18px; }
  .hero { min-height: 500px; }
  .intro-grid, .story, .story.reverse, .species-list { grid-template-columns: 1fr; gap: 30px; }
  .fact-grid { grid-template-columns: 1fr; }
  .band { padding: 54px 0; }
}