:root {
  --field-bg: #f4f1ea;
  --field-panel: #fffdf7;
  --field-ink: #1f2528;
  --field-muted: #697177;
  --field-line: #d8d0c0;
  --field-blue: #315f7e;
  --field-rust: #8b5634;
  --field-sage: #5f715c;
  --field-dark: #162027;
  --field-shadow: 0 18px 42px rgba(31, 37, 40, 0.12);
}

* {
  box-sizing: border-box;
}

body.field-test-page {
  margin: 0;
  background: var(--field-bg);
  color: var(--field-ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

.field-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.6rem;
  border-bottom: 1px solid var(--field-line);
  background: rgba(244, 241, 234, 0.9);
  backdrop-filter: blur(14px);
}

.field-nav a,
.action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0.62rem 0.9rem;
  border: 1px solid var(--field-line);
  border-radius: 8px;
  color: var(--field-ink);
  text-decoration: none;
  font-weight: 850;
}

.field-nav a:hover,
.action:hover {
  border-color: var(--field-rust);
}

.field-hero,
main,
.field-footer {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.field-hero {
  min-height: calc(100vh - 56px);
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: clamp(1.25rem, 4vw, 4rem);
  align-items: center;
  padding: clamp(2rem, 6vw, 5rem) 0;
}

.hero-copy {
  max-width: 660px;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--field-rust);
  font-size: 0.76rem;
  font-weight: 950;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p,
span,
strong,
td,
th {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(3rem, 8.5vw, 6.6rem);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4.5vw, 4rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 0.45rem;
  font-size: 1.15rem;
  line-height: 1.18;
}

.hero-copy p,
.section-intro p,
.field-card p,
.tester-panel p,
.tester-list,
.budget-card span {
  color: var(--field-muted);
}

.hero-copy p {
  max-width: 58ch;
  margin: 1.25rem 0 0;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.action {
  background: var(--field-panel);
  box-shadow: 0 10px 24px rgba(31, 37, 40, 0.08);
}

.action.primary {
  background: var(--field-dark);
  color: #fffaf0;
  border-color: var(--field-dark);
}

.kit-board {
  min-height: 600px;
  position: relative;
  border: 1px solid var(--field-line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(49, 95, 126, 0.14), transparent 36%),
    linear-gradient(315deg, rgba(139, 86, 52, 0.16), transparent 38%),
    #ebe5d8;
  box-shadow: var(--field-shadow);
  overflow: hidden;
}

.kit-board::before,
.kit-board::after {
  content: "";
  position: absolute;
  inset: 13%;
  border: 1px solid rgba(31, 37, 40, 0.16);
  border-radius: 50%;
}

.kit-board::after {
  inset: 28%;
}

.kit-node,
.kit-center {
  position: absolute;
  display: grid;
  place-items: center;
  min-width: 118px;
  min-height: 54px;
  padding: 0.7rem;
  border: 1px solid rgba(31, 37, 40, 0.15);
  border-radius: 8px;
  background: rgba(255, 253, 247, 0.86);
  box-shadow: 0 12px 28px rgba(31, 37, 40, 0.1);
  color: var(--field-dark);
  font-weight: 900;
  text-align: center;
}

.kit-center {
  left: 50%;
  top: 50%;
  min-width: 150px;
  min-height: 86px;
  color: #fffaf0;
  background: var(--field-dark);
  transform: translate(-50%, -50%);
}

.spine { left: 11%; top: 16%; }
.grip { right: 12%; top: 18%; }
.arm { left: 8%; top: 47%; }
.hub { right: 10%; top: 50%; }
.keyboard { left: 18%; bottom: 14%; }
.lap { right: 18%; bottom: 13%; }

main {
  display: grid;
  gap: clamp(2.2rem, 5vw, 4rem);
  padding-bottom: 4rem;
}

.principles,
.stack-panel,
.build-grid,
.tester-panel,
.budget-panel {
  display: grid;
  gap: 1.25rem;
}

.section-intro {
  max-width: 820px;
}

.cards {
  display: grid;
  gap: 0.85rem;
}

.four-up {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.three-up,
.budget-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.field-card,
.stack-panel,
.tester-panel,
.budget-card {
  border: 1px solid var(--field-line);
  border-radius: 8px;
  background: var(--field-panel);
  box-shadow: 0 10px 28px rgba(31, 37, 40, 0.07);
}

.field-card,
.budget-card {
  min-height: 185px;
  padding: 1rem;
}

.kicker {
  display: inline-flex;
  margin-bottom: 1.25rem;
  color: var(--field-rust);
  font-size: 0.75rem;
  font-weight: 900;
  text-transform: uppercase;
}

.stack-panel,
.tester-panel,
.budget-panel {
  padding: clamp(1rem, 3vw, 2rem);
}

.comparison-wrap {
  overflow-x: auto;
  border: 1px solid var(--field-line);
  border-radius: 8px;
}

.comparison-table {
  width: 100%;
  min-width: 960px;
  border-collapse: collapse;
  background: #fbfaf7;
}

.comparison-table th,
.comparison-table td {
  padding: 0.8rem;
  border-bottom: 1px solid var(--field-line);
  border-right: 1px solid var(--field-line);
  text-align: left;
  vertical-align: top;
}

.comparison-table th {
  color: var(--field-dark);
  font-size: 0.84rem;
}

.comparison-table td {
  color: var(--field-muted);
}

.comparison-table a {
  color: var(--field-blue);
}

.tester-panel {
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  align-items: start;
}

.tester-list {
  display: grid;
  gap: 0.65rem;
  margin: 0;
}

.budget-card {
  display: grid;
  gap: 0.45rem;
}

.budget-card strong {
  color: var(--field-blue);
  font-size: 1.1rem;
}

.field-footer {
  padding: 1.25rem 0 2rem;
  border-top: 1px solid var(--field-line);
  color: var(--field-muted);
}

@media (max-width: 980px) {
  .field-nav {
    justify-content: flex-start;
    overflow-x: auto;
  }

  .field-hero,
  .tester-panel {
    grid-template-columns: 1fr;
  }

  .field-hero {
    min-height: auto;
    padding-top: 2rem;
  }

  .four-up,
  .three-up,
  .budget-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .field-hero,
  main,
  .field-footer {
    width: min(100% - 1rem, 1180px);
  }

  h1 {
    max-width: 10ch;
  }

  .kit-board {
    min-height: 460px;
  }

  .kit-node {
    min-width: 92px;
    font-size: 0.82rem;
  }

  .kit-center {
    min-width: 120px;
  }

  .hero-actions {
    display: grid;
  }
}