:root {
  color-scheme: light;
  --ink: #17201c;
  --muted: #5c6861;
  --line: #d7ded9;
  --paper: #fbfcfa;
  --band: #eef5f0;
  --accent: #116149;
  --accent-2: #8b4e1f;
  --accent-3: #255b8f;
  --white: #ffffff;
}

* { box-sizing: border-box; }

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

a { color: var(--accent-3); }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(16px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 2;
}

.brand {
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
}

nav a { color: var(--muted); text-decoration: none; }

.utility-band {
  background: var(--band);
  border-bottom: 1px solid var(--line);
}

.content-grid {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(32px, 6vw, 80px) clamp(16px, 4vw, 48px);
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.7fr);
  gap: 32px;
  align-items: center;
}

h1, h2, h3 { line-height: 1.16; letter-spacing: 0; }
h1 { font-size: clamp(34px, 5vw, 64px); margin: 8px 0 16px; max-width: 820px; }
h2 { font-size: 28px; margin: 0 0 16px; }
h3 { font-size: 18px; margin: 0 0 10px; }

.lede {
  max-width: 680px;
  color: var(--muted);
  font-size: 18px;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.search-panel {
  margin-top: 28px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  max-width: 620px;
}

.search-panel label {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 14px;
}

input, button {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
}

input { padding: 0 12px; background: var(--white); }
button { padding: 0 16px; background: var(--accent); color: var(--white); cursor: pointer; }

.signal-panel, .signal-strip {
  display: grid;
  gap: 12px;
}

.signal-panel > div, .signal-strip > div {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.signal-panel strong, .signal-strip strong {
  display: block;
  font-size: 30px;
}

.signal-panel span, .signal-strip span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 48px clamp(16px, 4vw, 48px);
}

.compact { padding-top: 28px; padding-bottom: 28px; }

.section-heading {
  margin-bottom: 22px;
}

.score-table, .requirements-table {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--white);
}

.table-row {
  display: grid;
  grid-template-columns: 2fr 0.7fr 0.7fr 0.7fr 0.7fr;
  gap: 12px;
  padding: 14px 16px;
  border-top: 1px solid var(--line);
}

.requirements-table .table-row {
  grid-template-columns: 0.7fr 2fr;
}

.validation-table .table-row {
  grid-template-columns: 0.8fr 1.2fr 1.6fr;
}

.pricing-table .table-row {
  grid-template-columns: 0.8fr 0.8fr 1fr 2fr;
}

.table-row:first-child { border-top: 0; }
.table-head { background: #f5f7f4; font-weight: 800; }

.page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.page-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.page-card p { color: var(--muted); font-size: 14px; }
.page-card span { color: var(--accent-2); font-size: 13px; font-weight: 800; }

.article-shell {
  max-width: 920px;
  margin: 0 auto;
  padding: 32px clamp(16px, 4vw, 48px);
}

.breadcrumb {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 24px;
}

.answer-box {
  background: var(--band);
  border-left: 5px solid var(--accent);
  padding: 18px;
  border-radius: 0 8px 8px 0;
}

.meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.meta-strip span,
.comparison-grid span {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  padding: 6px 10px;
  color: var(--muted);
  font-size: 14px;
}

.calculator-panel {
  background: #f5f7f4;
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-top: 24px;
}

.pricing-calculator {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: 12px;
  align-items: end;
}

.pricing-calculator label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 14px;
}

select {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  font: inherit;
  padding: 0 10px;
}

output {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: var(--ink);
  color: var(--white);
  padding: 0 14px;
  font-weight: 800;
  white-space: nowrap;
}

/* Tool pages override the default output styling for richer layouts. */
.tool-article output,
.comparison-article output {
  display: block;
  background: var(--white);
  color: var(--ink);
  font-weight: normal;
  white-space: normal;
  padding: 16px 20px;
  border: 1px solid var(--line);
  margin-top: 16px;
}

.stack-calculator,
.per-user-calculator,
.annual-monthly-calculator,
.comparison-calculator {
  display: grid;
  gap: 16px;
  padding: 20px;
}

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

.field-label {
  color: var(--muted);
  font-size: 14px;
}

.tool-selector {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px;
  background: var(--white);
}

.tool-selector legend {
  padding: 0 6px;
  font-weight: 600;
  color: var(--ink);
}

.tool-checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
}

.tool-checkbox {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 6px;
  align-items: center;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
}

.tool-checkbox input {
  width: 16px;
  height: 16px;
}

.tool-checkbox .tier-select {
  font-size: 13px;
  min-height: 32px;
  padding: 0 6px;
}

.estimate-line {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px dashed var(--line);
}

.estimate-line:last-of-type {
  border-bottom: none;
}

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

.estimate-line strong {
  color: var(--accent);
  font-size: 18px;
}

.stack-breakdown,
.tier-breakdown,
.avm-table,
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
}

.stack-breakdown th,
.stack-breakdown td,
.tier-breakdown th,
.tier-breakdown td,
.avm-table th,
.avm-table td,
.comparison-table th,
.comparison-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.stack-breakdown th,
.tier-breakdown th,
.avm-table th,
.comparison-table th {
  background: var(--band);
  color: var(--muted);
  font-weight: 600;
}

.savings-row td {
  font-weight: 700;
  background: var(--band);
}

.cheapest-tier,
.payback-note {
  margin-top: 12px;
  padding: 10px 12px;
  background: var(--band);
  border-radius: 6px;
  color: var(--ink);
  font-size: 14px;
}

.side-by-side {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}

.decision-axes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.decision-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
  background: var(--paper);
}

.tool-grid,
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.tool-card,
.comparison-card {
  display: block;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.15s;
}

.tool-card:hover,
.comparison-card:hover {
  border-color: var(--accent);
}

.tool-card h2,
.comparison-card h2 {
  margin: 0 0 6px;
  font-size: 18px;
  color: var(--accent);
}

.tool-card p,
.comparison-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 780px) {
  .side-by-side,
  .decision-axes {
    grid-template-columns: 1fr;
  }
  .tool-checkbox-grid {
    grid-template-columns: 1fr;
  }
}

.rule-list {
  padding-left: 22px;
}

.rule-list li { margin-bottom: 10px; }

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.small { color: var(--muted); font-size: 14px; }

.comparison-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.source-list {
  padding-left: 20px;
}

details {
  border-top: 1px solid var(--line);
  padding: 14px 0;
}

summary {
  cursor: pointer;
  font-weight: 800;
}

.city-group { margin-top: 32px; }

.site-footer {
  padding: 24px clamp(16px, 4vw, 48px);
  background: var(--ink);
  color: #e8eee9;
}

@media (max-width: 780px) {
  .content-grid, .two-column { grid-template-columns: 1fr; }
  .table-row { grid-template-columns: 1fr; }
  .pricing-calculator { grid-template-columns: 1fr; }
  .search-panel { grid-template-columns: 1fr; }
}

/* Reading progress bar (guides only) */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-3) 100%);
  transform-origin: left center;
  transform: scaleX(0);
  z-index: 100;
  pointer-events: none;
  transition: transform 80ms linear;
}

/* Sticky TOC on guides (desktop only) */
.guide-article .aeo-toc {
  background: var(--band);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 24px 0;
}
.guide-article .aeo-toc ol {
  margin: 8px 0 0;
  padding-left: 20px;
}
.guide-article .aeo-toc strong {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
@media (min-width: 980px) {
  .guide-article .aeo-toc {
    position: sticky;
    top: 80px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
  }
}

/* Related-content block (cross-links) */
.related-block {
  border-top: 2px solid var(--line);
  padding: 32px 0 16px;
  margin-top: 32px;
}
.related-block > h2 {
  font-size: 1.25rem;
  margin: 0 0 16px;
}
.related-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.related-group h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 10px;
}
.related-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.related-list a {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  text-decoration: none;
  color: var(--ink);
  transition: border-color 120ms, transform 120ms;
}
.related-list a:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.related-list a strong {
  display: block;
  font-size: 0.95rem;
  color: var(--accent-3);
  margin-bottom: 4px;
}
.related-list a span {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.45;
}
@media (max-width: 780px) {
  .related-groups {
    grid-template-columns: 1fr;
  }
}

/* New homepage hero band */
.hero-band {
  padding: 64px clamp(16px, 5vw, 80px) 48px;
  background: linear-gradient(180deg, var(--band) 0%, var(--paper) 100%);
}
.hero-content { max-width: 720px; }
.hero-content h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.15;
  margin: 8px 0 16px;
}
.hero-content .lede {
  font-size: clamp(1rem, 1.7vw, 1.15rem);
  color: var(--muted);
  margin-bottom: 24px;
  max-width: 60ch;
}
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
.cta-primary, .cta-secondary {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 120ms, box-shadow 120ms;
}
.cta-primary { background: var(--accent); color: var(--white); }
.cta-secondary { background: var(--white); color: var(--ink); border: 1px solid var(--line); }
.cta-primary:hover, .cta-secondary:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(17,97,73,0.15); }
.trust-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-top: 40px;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
  max-width: 720px;
}
.trust-strip div { text-align: left; }
.trust-strip strong { display: block; font-size: 1.5rem; color: var(--accent); }
.trust-strip span { color: var(--muted); font-size: 0.9rem; }

/* Section-alt for visual rhythm */
.section-alt { background: var(--band); }

/* CTA band at bottom of homepage */
.cta-band {
  background: var(--ink);
  color: #e8eee9;
  padding: 48px clamp(16px, 5vw, 80px);
  margin-top: 24px;
}
.cta-band h2 { color: var(--white); margin: 0 0 8px; }
.cta-band p { margin: 0; color: #c5d0c9; }
.cta-band-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
  flex-wrap: wrap;
}
.cta-band .cta-primary { background: var(--accent); }

.guide-card { background: var(--white); border-left: 3px solid var(--accent); }
.section-cta { margin-top: 16px; }
.byline-section { padding-top: 8px; }
.footer-tagline { font-size: 0.9rem; opacity: 0.85; margin-top: 12px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* Smoother card hover */
.page-card, .tool-card, .comparison-card {
  transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease;
}
.page-card:hover, .tool-card:hover, .comparison-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(23,32,28,0.08);
}

/* Body prose readability */
.guide-article p, .article-shell p {
  max-width: 70ch;
  line-height: 1.65;
}
.guide-article .related-block p,
.article-shell .related-block p { max-width: none; }