:root {
  --green: #1a6b2a;
  --green-pale: #eaf5eb;
  --gold: #f5a623;
  --cream: #fdf8f0;
  --white: #ffffff;
  --text: #123142;
  --text-soft: #537082;
  --border: #cfe4ea;
  --shadow: 0 22px 50px rgba(11, 73, 103, 0.10);
  --shadow-soft: 0 12px 28px rgba(10, 63, 91, 0.08);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --nav-h: 62px;
  --fish-deep: #0c4f69;
  --fish-ocean: #106d8f;
  --fish-blue: #1f9fcb;
  --fish-aqua: #3dc8c2;
  --fish-soft: #dff8f7;
  --fish-mist: #eefafc;
  --fish-surface: #f8feff;
  --fish-foam: #f1fbff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Hind', sans-serif;
  background:
    radial-gradient(circle at top, rgba(61, 200, 194, 0.12), transparent 34%),
    linear-gradient(180deg, #f5fcff 0%, #eef8fb 44%, #f8fcfe 100%);
  color: var(--text);
}
img, video { max-width: 100%; display: block; }
a { color: inherit; }
button, input, select { font: inherit; }

.shell { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.page-stack { padding: 28px 0 72px; }
.section-block { margin-top: 28px; }
.section-heading {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}
.section-icon {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.18), rgba(31, 159, 203, 0.08));
  box-shadow: inset 0 0 0 1px rgba(16, 109, 143, 0.10);
  font-size: 1.35rem;
}
.section-kicker {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fish-ocean);
  margin-bottom: 3px;
}
.section-heading h2 {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.18;
  color: var(--text);
}
.section-note {
  margin-bottom: 16px;
  color: var(--text-soft);
  line-height: 1.75;
  max-width: 900px;
}

nav {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid rgba(213, 229, 215, 0.88);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 14px rgba(0,0,0,0.05);
}
.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
}
.nav-logo {
  text-decoration: none;
  font-family: 'Poppins', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--green);
  white-space: nowrap;
}
.nav-logo span { color: var(--gold); }
.nav-links {
  display: flex;
  gap: 4px;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  text-decoration: none;
  color: #5a685f;
  padding: 8px 12px;
  border-radius: 999px;
  white-space: nowrap;
  font-size: 0.82rem;
  font-weight: 600;
}
.nav-links a:hover,
.nav-links a.active { background: var(--green-pale); color: var(--green); }
.lang-select {
  border: 2px solid var(--green);
  color: var(--green);
  background: transparent;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 700;
}
.tip-bar {
  background: linear-gradient(90deg, #0d5f77 0%, #1183aa 55%, #24b4ce 100%);
  color: white;
  text-align: center;
  padding: 10px 16px;
  font-size: 0.86rem;
}

.fishery-hero {
  position: relative;
  min-height: clamp(540px, 82vh, 760px);
  overflow: hidden;
  background: linear-gradient(140deg, #e6f8fb 0%, #dff5f4 42%, #f7feff 100%);
}
.hero-video,
.hero-overlay,
.hero-backdrop {
  position: absolute;
  inset: 0;
}
.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-overlay {
  background: linear-gradient(138deg, rgba(4, 42, 59, 0.72) 10%, rgba(9, 87, 110, 0.58) 46%, rgba(20, 125, 149, 0.38) 75%, rgba(8, 42, 62, 0.64) 100%);
}
.hero-backdrop {
  background:
    radial-gradient(circle at 16% 18%, rgba(114, 231, 223, 0.24), transparent 30%),
    radial-gradient(circle at 78% 30%, rgba(143, 225, 244, 0.22), transparent 28%),
    radial-gradient(circle at 74% 76%, rgba(33, 186, 216, 0.18), transparent 26%);
}
.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 22px;
  padding-top: 56px;
  padding-bottom: 24px;
}
.hero-copy,
.hero-card {
  border-radius: var(--radius-xl);
  padding: 26px 22px;
  border: 1px solid rgba(255,255,255,0.18);
  box-shadow: 0 22px 50px rgba(0,0,0,0.18);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.hero-copy {
  background: linear-gradient(145deg, rgba(255,255,255,0.12), rgba(198, 246, 255, 0.08));
  color: white;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 7px 12px;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(194, 244, 255, 0.26);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 14px;
}
.hero-copy h1 {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(2.4rem, 6vw, 4.3rem);
  line-height: 0.96;
  margin-bottom: 14px;
}
.hero-subtitle {
  font-size: clamp(1rem, 2.3vw, 1.18rem);
  line-height: 1.75;
  color: #f2fdff;
  max-width: 720px;
}
.hero-support {
  margin-top: 12px;
  color: #d8f4f6;
  font-size: 0.92rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.pill-action {
  text-decoration: none;
  padding: 11px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.24), rgba(31, 159, 203, 0.26));
  border: 1px solid rgba(214, 248, 255, 0.3);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  box-shadow: 0 14px 30px rgba(7, 56, 78, 0.18);
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.pill-action:hover,
.pill-action:focus-visible {
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.34), rgba(31, 159, 203, 0.4));
  box-shadow: 0 18px 36px rgba(7, 56, 78, 0.22);
  transform: translateY(-1px);
}
.hero-card {
  background: linear-gradient(145deg, rgba(249, 255, 255, 0.82), rgba(234, 251, 252, 0.72));
  color: var(--text);
}
.hero-card-icon {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.22), rgba(31, 159, 203, 0.16));
  font-size: 1.6rem;
  margin-bottom: 14px;
}
.hero-card h2 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.2rem;
  line-height: 1.35;
  margin-bottom: 10px;
}
.hero-card p {
  color: var(--text-soft);
  line-height: 1.72;
}
.hero-stat-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.hero-stat-grid div {
  padding: 12px;
  border-radius: 18px;
  background: rgba(255,255,255,0.76);
  border: 1px solid rgba(16, 109, 143, 0.12);
}
.hero-stat-grid strong {
  display: block;
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  color: var(--fish-deep);
}
.hero-stat-grid span {
  font-size: 0.8rem;
  color: var(--text-soft);
}
.hero-highlights {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding-bottom: 28px;
}
.hero-highlights span {
  background: rgba(255,255,255,0.9);
  color: var(--fish-deep);
  border: 1px solid rgba(31, 159, 203, 0.10);
  border-radius: 999px;
  padding: 11px 14px;
  text-align: center;
  font-weight: 700;
  font-size: 0.82rem;
  box-shadow: var(--shadow-soft);
}

.quick-nav-wrap {
  position: sticky;
  top: var(--nav-h);
  z-index: 40;
  background: rgba(245, 252, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(207, 228, 234, 0.95);
}
.quick-nav {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 12px 0;
}
.quick-nav::-webkit-scrollbar { display: none; }
.quick-nav a {
  text-decoration: none;
  white-space: nowrap;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid #d6e8ed;
  background: rgba(255,255,255,0.9);
  color: var(--text-soft);
  font-size: 0.8rem;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.quick-nav a.active,
.quick-nav a:hover,
.quick-nav a:focus-visible {
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.16), rgba(31, 159, 203, 0.14));
  color: var(--fish-deep);
  border-color: rgba(16, 109, 143, 0.28);
  box-shadow: 0 10px 24px rgba(16, 109, 143, 0.12);
  transform: translateY(-1px);
}

.anchor-focus {
  animation: anchorPulse 1.4s ease;
}

@keyframes anchorPulse {
  0% { box-shadow: 0 0 0 0 rgba(31, 159, 203, 0.22); }
  45% { box-shadow: 0 0 0 10px rgba(31, 159, 203, 0.06); }
  100% { box-shadow: 0 0 0 0 rgba(31, 159, 203, 0); }
}

.note-card:target,
.section-block:target,
.faq-item:target {
  border-color: rgba(16, 109, 143, 0.28);
  box-shadow: 0 24px 46px rgba(11, 73, 103, 0.14);
}

.premium-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(245, 252, 255, 0.92));
  border: 1px solid rgba(207, 228, 234, 0.92);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.summary-grid,
.systems-grid,
.notes-grid,
.metrics-grid {
  display: grid;
  gap: 14px;
}
.four-up { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.three-up { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.summary-card,
.mini-card,
.system-card,
.note-card,
.disease-card { padding: 20px; }
.summary-card h3,
.mini-card h3,
.system-card h3,
.table-card h3,
.timeline-card h3,
.checklist-card h3,
.metric-card h3,
.note-card h3,
.disease-card h3,
.ai-cta h3,
.troubleshoot-strip h3 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.02rem;
  margin-bottom: 8px;
  color: var(--text);
}
.summary-card p,
.mini-card p,
.system-card p,
.disease-card p,
.note-card p,
.table-card p,
.timeline-card p,
.metric-card p,
.checklist-card p {
  color: var(--text-soft);
  line-height: 1.72;
  font-size: 0.92rem;
}
.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.16), rgba(31, 159, 203, 0.08));
  font-size: 1.4rem;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.18), rgba(31, 159, 203, 0.16));
  color: var(--fish-deep);
  font-size: 0.74rem;
  font-weight: 700;
}
.accent-blue .badge { background: linear-gradient(135deg, rgba(31, 159, 203, 0.18), rgba(12, 79, 105, 0.12)); color: var(--fish-deep); }
.system-card ul {
  list-style: none;
  margin-top: 12px;
  display: grid;
  gap: 6px;
}
.system-card li,
.disease-card p,
.metric-card p {
  font-size: 0.88rem;
}
.table-card,
.timeline-card,
.checklist-card,
.troubleshoot-strip,
.exam-strip,
.ai-cta { padding: 22px; margin-top: 16px; }
.section-block[id] { scroll-margin-top: calc(var(--nav-h) + 92px); }
.note-card[id] { scroll-margin-top: calc(var(--nav-h) + 108px); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
thead th {
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.14), rgba(31, 159, 203, 0.10));
  color: var(--fish-deep);
  text-align: left;
  font-size: 0.82rem;
  padding: 12px 14px;
}
tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid #e2edf1;
  color: var(--text-soft);
  font-size: 0.86rem;
}
tbody tr:last-child td { border-bottom: none; }
.timeline { display: grid; gap: 12px; margin-top: 18px; }
.timeline-item {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  align-items: start;
}
.timeline-item span {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--fish-ocean), var(--fish-aqua));
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  box-shadow: 0 12px 24px rgba(12, 79, 105, 0.18);
}
.timeline-item h4 {
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem;
  margin-bottom: 3px;
}
.metrics-grid { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.metric-card {
  padding: 18px;
  border-radius: 24px;
  background: linear-gradient(180deg, #fcffff, #eefbff);
  border: 1px solid #cde8ef;
  box-shadow: 0 16px 34px rgba(24, 114, 180, 0.08);
}
.metric-range {
  display: inline-block;
  margin-bottom: 10px;
  padding: 6px 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.16), rgba(31, 159, 203, 0.14));
  color: var(--fish-deep);
  font-weight: 700;
  font-size: 0.78rem;
}
.trouble-grid {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}
.trouble-grid div {
  background: linear-gradient(135deg, #f7feff, #f2fbfc);
  border: 1px solid #d9eaef;
  border-radius: 18px;
  padding: 14px;
}
.trouble-grid strong {
  display: block;
  margin-bottom: 4px;
  color: var(--fish-deep);
}
.trouble-grid span { color: var(--text-soft); line-height: 1.65; }
.check-grid,
.tips-grid {
  list-style: none;
  display: grid;
  gap: 10px;
}
.check-grid li,
.tips-grid li {
  border-radius: 16px;
  padding: 14px 14px 14px 42px;
  background: linear-gradient(135deg, #f7feff, #f5fbfd);
  border: 1px solid #daeaf0;
  position: relative;
  color: var(--text-soft);
  line-height: 1.65;
}
.check-grid li::before,
.tips-grid li::before {
  content: '✓';
  position: absolute;
  left: 14px;
  top: 14px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(61, 200, 194, 0.18);
  color: var(--fish-deep);
  font-size: 0.76rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.primary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
  padding: 12px 18px;
  text-decoration: none;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--fish-ocean), var(--fish-blue));
  color: white;
  font-weight: 700;
  box-shadow: 0 16px 32px rgba(12, 79, 105, 0.20);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}
.primary-cta:hover,
.primary-cta:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 20px 38px rgba(12, 79, 105, 0.24);
  filter: saturate(1.06);
}
.faq-list { display: grid; gap: 12px; }
.faq-item {
  background: rgba(255,255,255,0.94);
  border: 1px solid #d9eaf0;
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.faq-item[open] {
  border-color: rgba(16, 109, 143, 0.24);
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(239, 251, 255, 0.92));
  box-shadow: 0 18px 36px rgba(11, 73, 103, 0.12);
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 20px;
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem;
  position: relative;
  padding-right: 52px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.16), rgba(31, 159, 203, 0.14));
  color: var(--fish-deep);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
}
.faq-item[open] summary::after { content: '–'; }
.faq-item p {
  padding: 0 20px 18px;
  color: var(--text-soft);
  line-height: 1.74;
}
.notes-grid { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.prompt-chips button {
  border: none;
  cursor: pointer;
}
.note-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.note-card:hover,
.note-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 24px 44px rgba(11, 73, 103, 0.14);
  border-color: rgba(16, 109, 143, 0.24);
}
.note-tag {
  display: inline-flex;
  align-self: flex-start;
  margin-bottom: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.16), rgba(31, 159, 203, 0.14));
  color: var(--fish-deep);
  font-size: 0.74rem;
  font-weight: 700;
}
.note-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  margin-top: auto;
  padding: 11px 15px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--fish-ocean), var(--fish-blue));
  color: white;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 12px 24px rgba(12, 79, 105, 0.18);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}
.note-link:hover,
.note-link:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 18px 34px rgba(12, 79, 105, 0.22);
  filter: saturate(1.05);
}
.exam-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.exam-strip span {
  padding: 12px 14px;
  border-radius: 16px;
  background: linear-gradient(135deg, #f7feff, #edf9fb);
  text-align: center;
  font-weight: 700;
  color: var(--fish-deep);
}
.ai-input-row {
  display: grid;
  gap: 12px;
}
.ai-input-row input {
  width: 100%;
  padding: 15px 16px;
  border-radius: 16px;
  border: 1.8px solid #d7e8ee;
  background: #fcffff;
}
.ai-input-row input:focus {
  outline: none;
  border-color: var(--fish-blue);
  box-shadow: 0 0 0 4px rgba(31, 159, 203, 0.12);
}
.prompt-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.prompt-chips button {
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.10), rgba(31, 159, 203, 0.08));
  border: 1px solid #d7e8ee;
  color: var(--fish-deep);
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.prompt-chips button:hover,
.prompt-chips button:focus-visible {
  background: linear-gradient(135deg, rgba(61, 200, 194, 0.16), rgba(31, 159, 203, 0.12));
  border-color: rgba(16, 109, 143, 0.24);
  transform: translateY(-1px);
}

.schemes-cta {
  min-width: min(100%, 290px);
}

.schemes-cta span {
  font-size: 1rem;
}

footer {
  background: #12313a;
  color: #a8d9de;
  text-align: center;
  padding: 34px 16px;
}
.footer-logo {
  font-family: 'Poppins', sans-serif;
  color: #52c4c0;
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 8px;
}
footer p { line-height: 1.8; font-size: 0.84rem; }
.footer-links { margin-top: 10px; }
.footer-links a { color: #d5f6f8; text-decoration: none; }
.footer-meta { opacity: 0.7; margin-top: 8px; }

.page-nav-wrap{
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid rgba(8, 92, 116, 0.14);
  box-shadow: 0 1px 4px rgba(5,52,66,0.06);
}
.page-nav{
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 10px 0;
}
.page-back{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(31, 159, 203, 0.28);
  background: #eef8fb;
  color: #0e5a73;
  font: 700 0.82rem/1 'Hind', sans-serif;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(12,74,95,0.08);
  transition: background-color .2s ease, border-color .2s ease, transform .18s ease, box-shadow .2s ease;
}
.page-back:hover,
.page-back:focus-visible { background: #ddeff6; border-color: rgba(18,113,143,0.45); transform: translateY(-1px); box-shadow: 0 3px 8px rgba(12,74,95,0.13); }
.page-back:focus-visible { outline: 2px solid rgba(18,113,143,0.32); outline-offset: 2px; }
.page-back:active { transform: translateY(0); box-shadow: 0 1px 2px rgba(12,74,95,0.1); }
.breadcrumb{
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  row-gap: 6px;
  column-gap: 9px;
  color: #4f6670;
  font-size: 0.8rem;
  line-height: 1.4;
}
.breadcrumb span[aria-hidden="true"]{ color: #7a929b; font-size: 0.74rem; }
.breadcrumb a{
  color: #12718f;
  text-decoration: none;
  text-underline-offset: 2px;
  transition: color .2s ease, text-decoration-color .2s ease;
}
.breadcrumb a:hover,
.breadcrumb a:focus-visible { color: #0f5e76; text-decoration: underline; text-decoration-color: rgba(15,94,118,0.5); }
.breadcrumb a:focus-visible { outline: 2px solid rgba(18,113,143,0.3); outline-offset: 2px; border-radius: 6px; }
.breadcrumb [aria-current="page"]{
  color: #14313a;
  font-weight: 700;
}
@media (max-width: 560px) {
  .page-nav { gap: 10px; }
  .breadcrumb { font-size: 0.78rem; column-gap: 7px; }
}
@media (prefers-reduced-motion: reduce) {
  .page-back, .breadcrumb a { transition: none; }
}

@media (min-width: 700px) {
  .hero-content { grid-template-columns: 1.25fr 0.75fr; align-items: end; }
  .hero-highlights { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .four-up { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .three-up { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metrics-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .notes-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .check-grid,
  .tips-grid,
  .trouble-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .exam-strip { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .ai-input-row { grid-template-columns: 1fr auto; }
}

@media (min-width: 980px) {
  .page-stack { padding-top: 36px; }
  .four-up { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .three-up { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .systems-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .metrics-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .notes-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .check-grid,
  .tips-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}