:root {
  --ink: #0b0f14;
  --muted: #3a4452;
  --line: #d5dde8;
  --surface: #ffffff;
  --field: #0a7d33;
  --blue: #0b5fff;
  --soft: #f2f5f8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--soft);
  font: 18px/1.5 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: var(--blue);
  font-weight: 800;
}

.site-nav,
.section,
.footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
}

.site-nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 4px;
}

.site-nav nav a {
  padding: 0 6px;
}

.brand {
  color: var(--ink);
  font-size: 20px;
  font-weight: 900;
  text-decoration: none;
}

.hero {
  min-height: 62vh;
  display: grid;
  align-items: end;
  background:
    linear-gradient(90deg, rgba(8, 12, 18, 0.88), rgba(8, 12, 18, 0.48)),
    url("/subapps/tradeos/assets/anvil-field-product-preview.png") center / cover no-repeat;
  color: #fff;
}

.hero-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 88px 0 64px;
}

.eyebrow {
  margin: 0 0 10px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  max-width: 780px;
  margin: 0 0 16px;
  font-size: 64px;
  line-height: 0.98;
  letter-spacing: 0;
}

.hero p {
  max-width: 720px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 22px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 52px;
  padding: 0 18px;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  text-decoration: none;
}

.button.secondary {
  border: 1px solid rgba(255, 255, 255, 0.48);
  background: rgba(255, 255, 255, 0.08);
}

.section {
  padding: 36px 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
}

.panel,
.card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  overflow-wrap: break-word;
}

.panel {
  padding: 24px;
  grid-column: span 8;
}

.card {
  padding: 20px;
  grid-column: span 4;
}

h2 {
  margin: 0 0 12px;
  font-size: 30px;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 8px;
  font-size: 21px;
  letter-spacing: 0;
}

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

p a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.hero p,
.hero a {
  color: #fff;
}

.list {
  display: grid;
  gap: 12px;
}

.row {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.panel h3 a,
.card h3 a,
.row h3 a,
.row > a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.row input[type="email"],
.row input[type="text"] {
  width: 100%;
  min-height: 48px;
  margin-top: 8px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font: inherit;
  background: #fff;
}

.row input[type="checkbox"] {
  width: 44px;
  height: 44px;
  min-width: 44px;
  margin: 0;
  accent-color: var(--blue);
  transform: none;
}

label.row:has(input[type="checkbox"]) {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

label.row:has(input[type="checkbox"]) span {
  padding-top: 8px;
}

form .button {
  border: 0;
  cursor: pointer;
  font: inherit;
  font-weight: 900;
}

.calc-form {
  display: grid;
  gap: 14px;
}

.calc-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.calc-fields label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-weight: 800;
}

.calc-fields input,
.calc-fields select {
  min-height: 48px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font: inherit;
  background: #fff;
}

.calc-output {
  display: grid;
  gap: 8px;
  padding: 16px;
  border: 1px solid #b7dec4;
  border-radius: 8px;
  background: #edf8f0;
}

.calc-output strong {
  color: var(--ink);
}

.pill {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 4px 9px;
  border: 1px solid #b7dec4;
  border-radius: 999px;
  color: var(--field);
  font-size: 14px;
  font-weight: 800;
  background: #edf8f0;
}

.footer {
  padding: 28px 0 48px;
  color: var(--muted);
  font-size: 14px;
}

.footer p {
  margin: 0 0 8px;
}

.footer .brand {
  font-size: 17px;
}

.footer a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 700;
}

.toc-list {
  display: grid;
  gap: 8px;
}

.section[id] {
  scroll-margin-top: 16px;
}

.toc-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 700;
}

.calc-error {
  margin: 0;
  color: #a4262c;
  font-weight: 700;
}

@media (max-width: 820px) {
  h1 {
    font-size: 36px;
    line-height: 1.04;
  }

  .hero p {
    font-size: 19px;
  }

  .hero-inner {
    padding: 56px 0 44px;
  }

  .hero .actions {
    gap: 8px;
  }

  .hero .button {
    min-height: 48px;
    padding: 0 14px;
    font-size: 16px;
  }

  .site-nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    padding: 10px 16px 8px;
  }

  .site-nav nav {
    flex-wrap: wrap;
    gap: 8px;
    max-width: 100%;
    overflow-x: visible;
    padding: 0 0 4px;
  }

  .site-nav nav a {
    flex: 0 0 auto;
    min-height: 44px;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    text-decoration: none;
  }

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

  .calc-fields {
    grid-template-columns: 1fr;
  }

  .panel,
  .card {
    grid-column: auto;
  }
}