:root {
  --green: #85bb65;
  --dark-green: #006400;
  --cream: #fdfdfd;
  --ink: #0f1a0f;
  --muted: #4a5a4a;
  --border: #d9e6d2;
  --shadow: 0 8px 24px rgba(15, 26, 15, 0.08);
  --radius: 18px;
  --radius-sm: 10px;
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--cream);
  text-rendering: optimizeLegibility;
}

a {
  color: var(--dark-green);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

figure {
  margin: 0;
}

button,
input,
select,
textarea {
  font: inherit;
}

main {
  padding: var(--space-6) 0 var(--space-6);
}

section {
  padding: var(--space-5) 0;
}

h1,
h2,
h3 {
  line-height: 1.15;
  margin: 0 0 var(--space-2);
}

p {
  margin: 0 0 var(--space-3);
  color: var(--muted);
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.stack {
  display: grid;
  gap: var(--space-3);
}

.grid {
  display: grid;
  gap: var(--space-3);
}

@media (min-width: 700px) {
  .grid.cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid.cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .denom-menu {
    flex-wrap: wrap;
    overflow-x: visible;
    padding-bottom: 0;
  }
}

.site-header {
  background: linear-gradient(120deg, #f2f9ef, #ffffff);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  flex-wrap: wrap;
}

.logo {
  width: 180px;
  height: 36px;
}

.logo text {
  font-size: 28px;
  font-weight: 700;
  fill: var(--dark-green);
}

.nav {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  font-weight: 600;
}

.denom-nav {
  border-top: 1px solid var(--border);
  background: #ffffff;
}

.denom-nav .container {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding: var(--space-2) 0;
}

.denom-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.denom-menu {
  display: flex;
  gap: var(--space-2);
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 0.25rem;
}

.denom-menu a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: #f4f9f2;
  color: var(--dark-green);
  font-weight: 600;
  white-space: nowrap;
}

.denom-menu a:hover,
.denom-menu a:focus {
  text-decoration: none;
  background: #e8f4e4;
}

.denom-menu a[aria-current="page"] {
  background: var(--dark-green);
  color: #fff;
  border-color: var(--dark-green);
}

.hero {
  background: radial-gradient(circle at top, #f7fbf5 0%, #ffffff 65%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6);
  box-shadow: var(--shadow);
}

.hero p {
  max-width: 60ch;
}

.hero-split {
  display: grid;
  gap: var(--space-4);
  align-items: center;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.card-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  background: #fff;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover,
.card:focus {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(15, 26, 15, 0.12);
}

.card h3 {
  margin-bottom: var(--space-1);
}

.fact {
  border-left: 4px solid var(--green);
  padding-left: var(--space-3);
  background: #ffffff;
  border-radius: var(--radius-sm);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
  box-shadow: var(--shadow);
}

.notice {
  background: #f3fbf0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
  background: #fff;
}

th,
td {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--border);
}

th {
  background: #f6fbf4;
  color: var(--ink);
}

.faq-search {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  border: 1px solid var(--dark-green);
  background: var(--dark-green);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}

.button:hover,
.button:focus {
  text-decoration: none;
  background: #055f05;
}

.button.secondary {
  background: transparent;
  color: var(--dark-green);
}

.button.secondary:hover,
.button.secondary:focus {
  background: #e8f4e4;
}

.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--dark-green);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
}

.pill:hover,
.pill:focus {
  text-decoration: none;
  background: #f3fbf0;
}

.denom-section {
  display: grid;
  gap: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  background: #fff;
  box-shadow: var(--shadow);
}

.denom-info p {
  max-width: 55ch;
}

.bill-pair {
  display: grid;
  gap: var(--space-3);
}

.bill-pair img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff;
}

.bill-placeholder {
  aspect-ratio: 2.35 / 1;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--border);
  background: linear-gradient(120deg, #f4f9f2, #ffffff);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
  padding: var(--space-3);
}

.bill-figure figcaption {
  margin-top: 0.4rem;
}

.bill-stack {
  display: grid;
  gap: var(--space-3);
}

.bill-stack img {
  width: 100%;
  height: auto;
}

@media (min-width: 900px) {
  .hero-split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .denom-section {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }

  .denom-section.reverse {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .denom-section.reverse .denom-info {
    order: 2;
  }

  .denom-section.reverse .bill-pair {
    order: 1;
  }
}

@media (min-width: 700px) {
  .bill-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.faq-search input {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
}

details {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  background: #fff;
  box-shadow: var(--shadow);
}

details + details {
  margin-top: var(--space-3);
}

summary {
  font-weight: 600;
  cursor: pointer;
}

.footer {
  border-top: 1px solid var(--border);
  background: #f6fbf4;
  padding: var(--space-4) 0;
  color: var(--muted);
}

.footer .container {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

@media (min-width: 700px) {
  .footer .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: static;
  width: auto;
  height: auto;
  padding: var(--space-2);
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

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

.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: #e8f4e4;
  color: var(--dark-green);
  font-size: 0.85rem;
  font-weight: 600;
}