:root {
  color-scheme: light;
  --ink: #17212b;
  --muted: #52606d;
  --paper: #eef4f5;
  --panel: rgba(255, 255, 255, .92);
  --line: #d5e0e4;
  --accent: #0b6477;
  --accent-dark: #084c5b;
  --accent-soft: #e2f2f4;
  --shadow: 0 1rem 2.5rem rgba(23, 33, 43, .1);
}

* { box-sizing: border-box; }

html { min-height: 100%; }

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 90% 0%, rgba(142, 202, 211, .3), transparent 34rem),
    linear-gradient(135deg, #e6f0f2, var(--paper) 44%, #fff);
  color: var(--ink);
  font: 1rem/1.6 "Avenir Next", "Segoe UI", sans-serif;
}

main {
  width: min(64rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(2.5rem, 8vw, 6rem) 0;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem .9rem;
  margin-bottom: 2.5rem;
  padding: .7rem 0;
  border-bottom: 1px solid var(--line);
}

.nav-side {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .2rem .45rem;
}

.nav-label {
  margin-right: .15rem;
  color: var(--muted);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.nav-divider {
  color: var(--muted);
  font-size: 1.3rem;
  user-select: none;
}

.site-nav a {
  padding: .3rem .55rem;
  border-radius: .25rem;
  font-size: .92rem;
  text-decoration: none;
}

.site-nav a:hover, .site-nav a:focus-visible {
  background: var(--accent-soft);
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.site-nav a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent-dark);
  box-shadow: inset 0 -2px var(--accent);
}

h1, h2, h3 {
  color: var(--accent-dark);
  line-height: 1.12;
}

h1 {
  margin: 0 0 .7rem;
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  letter-spacing: -.04em;
}

h2 { margin-top: 2rem; }

p { color: var(--muted); }

a {
  color: var(--accent-dark);
  font-weight: 650;
  text-decoration-thickness: .1em;
  text-underline-offset: .16em;
}

a:hover, a:focus-visible {
  color: var(--accent);
}

main > ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

main > ul > li {
  min-height: 7.5rem;
  border: 1px solid var(--line);
  border-radius: .45rem;
  background: var(--panel);
  box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

main > ul > li:hover {
  background: #fff;
  box-shadow: 0 1.2rem 3rem rgba(23, 33, 43, .14);
  transform: translateY(-.2rem);
}

main > ul > li > a {
  display: flex;
  align-items: flex-end;
  min-height: 7.5rem;
  padding: 1.25rem;
  text-decoration: none;
}

main > ul > li > a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: -3px;
}

.card-link-text {
  display: grid;
  gap: .25rem;
}

.card-link-text small {
  color: var(--muted);
  font-size: .82rem;
  font-weight: 400;
}

.document {
  margin-top: 1.25rem;
  padding: 1.3rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: .45rem;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.document h2 { margin-top: 0; }

.links {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem 1.2rem;
}

.screen-only { margin-bottom: 1.5rem; }

.experiment-sheet {
  max-width: 52rem;
}

.experiment-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.2rem;
  margin: 1rem 0 2rem;
  padding: .8rem 1rem;
  border-left: .3rem solid var(--accent);
  background: var(--accent-soft);
}

.experiment-section {
  margin: 1.6rem 0;
}

.experiment-section h2 {
  margin-bottom: .5rem;
  font-size: 1.35rem;
}

.experiment-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  background: #fff;
}

.experiment-table th,
.experiment-table td {
  min-width: 5rem;
  height: 2.1rem;
  padding: .35rem;
  border: 1px solid #8999a1;
  text-align: center;
}

.experiment-table th {
  background: #edf4f5;
  color: var(--ink);
}

.print-note {
  color: var(--muted);
  font-size: .9rem;
}

.equipment-search {
  display: block;
  margin-top: 2rem;
  color: var(--accent-dark);
  font-weight: 700;
}

.equipment-input {
  width: min(100%, 34rem);
  margin: .5rem 0 1.5rem;
  padding: .75rem .9rem;
  border: 1px solid var(--line);
  border-radius: .35rem;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.equipment-input:focus {
  border-color: var(--accent);
  outline: 2px solid var(--accent-soft);
}

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
}

.equipment-card {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: .45rem;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.equipment-card h2 {
  margin-top: 0;
  font-size: 1.25rem;
}

.equipment-card p { font-size: .94rem; }

.equipment-specs {
  display: grid;
  grid-template-columns: minmax(6rem, auto) 1fr;
  gap: .2rem .7rem;
  margin: 1rem 0;
  font-size: .92rem;
}

.equipment-specs dt { color: var(--muted); font-weight: 700; }

.equipment-specs dd { margin: 0; }

.equipment-image {
  display: block;
  width: 100%;
  height: 9rem;
  margin-bottom: 1rem;
  object-fit: contain;
  border: 1px solid var(--line);
  background: #f8fbfb;
}

.equipment-image--missing {
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: .9rem;
}

.equipment-links {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1rem;
}

.equipment-card[hidden] { display: none; }

@media (max-width: 38rem) {
  main { width: min(100% - 1.25rem, 64rem); }
  main > ul { grid-template-columns: 1fr; }
  main > ul > li, main > ul > li > a { min-height: 5rem; }
}

@media print {
  body { background: #fff; }
  main { padding: 1rem 0; }
  main > ul > li, .document { box-shadow: none; }
  .site-nav, .screen-only, .print-note { display: none; }
  .experiment-sheet { max-width: none; }
}