:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #556274;
  --subtle: #6d7786;
  --paper: #ffffff;
  --page: #f6f8f7;
  --line: #dce3e0;
  --line-strong: #c4cec9;
  --brand: #0f6757;
  --brand-dark: #0b4e43;
  --accent: #b35c16;
  --accent-soft: #fff1e6;
  --blue-soft: #eaf2ff;
  --green-soft: #eaf7f2;
  --yellow-soft: #fff8dc;
  --danger-soft: #fff0f0;
  --shadow: 0 16px 40px rgba(23, 32, 42, 0.08);
  --radius: 8px;
  --content: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--brand-dark);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
[tabindex="-1"]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 10;
  padding: 10px 14px;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
}

.skip-link:focus {
  top: 12px;
  color: #fff;
}

img,
svg {
  max-width: 100%;
}

button,
input,
select {
  font: inherit;
}

.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  width: min(100% - 32px, var(--content));
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px 0;
}

.brand-link {
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  font-size: 0.95rem;
}

.top-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  color: var(--muted);
  text-decoration: none;
}

.top-nav a:hover {
  color: var(--brand-dark);
}

.hero,
.page-hero,
.section,
.footer-inner {
  width: min(100% - 32px, var(--content));
  margin: 0 auto;
}

.hero {
  padding: 44px 0 24px;
}

.page-hero {
  padding: 34px 0 18px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--brand-dark);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.13;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

h1 {
  max-width: 840px;
  font-size: clamp(2.2rem, 8vw, 4.4rem);
}

.page-hero h1 {
  max-width: 900px;
  font-size: clamp(2rem, 7vw, 3.5rem);
}

h2 {
  font-size: clamp(1.45rem, 4vw, 2.1rem);
}

h3 {
  font-size: 1.08rem;
}

.lead {
  max-width: 760px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

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

.section {
  padding: 32px 0;
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.section-heading p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 16px;
}

.card-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.calculator-card,
.info-card,
.result-card,
.content-card,
.related-card,
.faq-item {
  min-width: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.calculator-card {
  min-height: 176px;
  padding: 18px;
  color: var(--ink);
  text-decoration: none;
  box-shadow: 0 1px 0 rgba(23, 32, 42, 0.03);
  transition:
    border-color 140ms ease,
    transform 140ms ease,
    box-shadow 140ms ease;
}

.calculator-card:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.calculator-card p,
.info-card p,
.content-card p,
.related-card p,
.result-card p,
.faq-item p {
  margin: 8px 0 0;
  color: var(--muted);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--brand-dark);
  font-size: 0.82rem;
  font-weight: 700;
}

.info-grid {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.info-card {
  padding: 18px;
}

.ad-placeholder {
  display: grid;
  min-height: 96px;
  place-items: center;
  margin: 20px 0;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(15, 103, 87, 0.06), transparent),
    var(--paper);
  color: var(--subtle);
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
}

.ad-placeholder.compact {
  min-height: 72px;
  margin: 12px 0;
}

.ad-placeholder span {
  display: block;
}

.ad-placeholder small {
  display: block;
  margin-top: 4px;
  color: var(--subtle);
  font-weight: 600;
}

.calculator-layout {
  display: grid;
  gap: 20px;
}

.calculator-layout > *,
.form-grid > *,
.metric-grid > *,
.result-section,
.table-wrap {
  min-width: 0;
}

.tool-panel,
.results-panel,
.assumptions-box,
.content-panel,
.source-box,
.disclaimer-box,
.coming-soon,
.related-links,
.faq-section {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.tool-panel,
.results-panel,
.assumptions-box,
.content-panel,
.source-box,
.disclaimer-box,
.coming-soon,
.related-links,
.faq-section {
  padding: 18px;
}

.tool-panel,
.results-panel {
  max-width: 100%;
}

.content-panel p,
.source-box p {
  max-width: 820px;
  color: var(--muted);
}

.content-panel p:last-child,
.source-box p:last-child {
  margin-bottom: 0;
}

.content-grid,
.related-card-grid {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.content-card,
.related-card {
  padding: 16px;
}

.related-card {
  color: var(--ink);
  text-decoration: none;
}

.related-card:hover {
  border-color: var(--brand);
}

.source-box {
  border-left: 4px solid var(--brand);
}

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

.field-group {
  display: grid;
  gap: 6px;
}

.field-group label,
.field-label {
  color: var(--ink);
  font-size: 0.94rem;
  font-weight: 750;
}

.field-group input,
.field-group select {
  width: 100%;
  min-height: 44px;
  padding: 10px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
}

.field-group input:focus,
.field-group select:focus {
  border-color: var(--brand);
  outline: 3px solid rgba(15, 103, 87, 0.16);
}

.hint {
  margin: 0;
  color: var(--subtle);
  font-size: 0.84rem;
}

.radio-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.radio-row label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 8px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #fff;
  font-weight: 700;
}

.radio-row label:has(input:focus-visible) {
  border-color: var(--brand);
  outline: 3px solid rgba(15, 103, 87, 0.16);
  outline-offset: 1px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 1 1 150px;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  border-color: var(--brand);
  background: var(--brand);
  color: #fff;
}

.button.primary:hover {
  border-color: var(--brand-dark);
  background: var(--brand-dark);
  color: #fff;
}

.button.secondary:hover,
.button.ghost:hover {
  border-color: var(--brand);
  color: var(--brand-dark);
}

.button.ghost {
  background: transparent;
}

.error-list {
  margin: 0 0 16px;
  padding: 12px 14px 12px 34px;
  border: 1px solid #e7a3a3;
  border-radius: var(--radius);
  background: var(--danger-soft);
  color: #822323;
}

.status-note {
  margin: 0 0 14px;
  padding: 12px;
  border-radius: var(--radius);
  background: var(--blue-soft);
  color: #264462;
  font-weight: 700;
}

.results-panel[hidden] {
  display: none;
}

.result-summary {
  padding: 16px;
  border-radius: var(--radius);
  background: var(--green-soft);
}

.result-summary p {
  margin: 8px 0 0;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

@media (max-width: 719px) {
  .metric-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

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

.metric span {
  display: block;
  color: var(--subtle);
  font-size: 0.82rem;
  font-weight: 750;
}

.metric strong {
  display: block;
  margin-top: 4px;
  font-size: 1.25rem;
}

.result-section {
  margin-top: 22px;
}

.result-section > p {
  color: var(--muted);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 0.92rem;
}

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: #f0f4f2;
  color: var(--ink);
  font-size: 0.82rem;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: 0;
}

.callout {
  padding: 14px;
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  background: var(--accent-soft);
}

.callout.caution {
  border-left-color: #a76a00;
  background: var(--yellow-soft);
}

.checklist,
.plain-list,
.footer-links {
  padding-left: 20px;
}

.checklist li,
.plain-list li {
  margin: 7px 0;
}

.related-links ul,
.faq-section ul {
  margin-bottom: 0;
}

.faq-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.faq-item {
  padding: 16px;
}

.site-footer {
  margin-top: 36px;
  border-top: 1px solid var(--line);
  background: #17202a;
  color: #edf4f2;
}

.footer-inner {
  padding: 28px 0;
}

.footer-inner a {
  color: #d8efe8;
}

.footer-links {
  columns: 1;
}

.footer-links li {
  margin: 5px 0;
}

.footer-note {
  color: #c5d4d0;
}

.print-title {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (min-width: 720px) {
  .nav-wrap {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .hero {
    padding-top: 64px;
  }

  .form-grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .calculator-layout {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .tool-panel {
    position: sticky;
    top: 16px;
  }

  .footer-links {
    columns: 2;
  }

  .button {
    flex: 0 0 auto;
  }
}

@media print {
  @page {
    margin: 12mm;
  }

  body {
    background: #fff;
    color: #000;
  }

  .site-header,
  .top-nav,
  .tool-panel,
  .ad-placeholder,
  .actions,
  .related-links,
  .faq-section,
  .coming-soon,
  .site-footer,
  .page-hero,
  .skip-link,
  .no-print {
    display: none !important;
  }

  .section,
  .results-panel {
    width: 100%;
    padding: 0;
    border: 0;
  }

  .calculator-layout {
    display: block;
  }

  .results-panel {
    box-shadow: none;
  }

  a {
    color: #000;
    text-decoration: none;
  }

  table {
    font-size: 9pt;
  }

  thead {
    display: table-header-group;
  }

  tr {
    break-inside: avoid;
  }

  .print-title {
    display: block;
    margin-bottom: 16px;
  }

  .result-card,
  .metric,
  .result-summary,
  .callout,
  .table-wrap,
  .result-section {
    break-inside: avoid;
  }
}