:root {
  color-scheme: light;
  --bg: #f6f8fc;
  --bg-soft: #eef4ff;
  --card: #ffffff;
  --ink: #102033;
  --muted: #5d6b7b;
  --line: #dce3ee;
  --brand: #1457d9;
  --brand-dark: #0d3f9e;
  --brand-soft: #e8f0ff;
  --good: #087f5b;
  --warn: #986300;
  --danger: #b42318;
  --footer: #0d1826;
  --footer-ink: #dbe7f7;
  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 28px;
  --shadow: 0 18px 50px rgba(16,32,51,.08);
  --shadow-soft: 0 10px 30px rgba(16,32,51,.06);
  --focus: 0 0 0 4px rgba(20,87,217,.18);
  --space-1: .35rem;
  --space-2: .65rem;
  --space-3: 1rem;
  --space-4: 1.35rem;
  --space-5: 1.8rem;
  --space-6: 2.4rem;
  --space-7: 3.2rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--footer); }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--footer);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
body.nav-open { overflow: hidden; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible { outline: none; box-shadow: var(--focus); }
button, input { font: inherit; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: -999px; top: 8px; background: #fff; color: var(--ink); padding: 8px 12px; border-radius: 10px; z-index: 20; }
.skip-link:focus { left: 8px; }

.site-header { background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(10px); }
.header-inner { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 16px; position: relative; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 850; letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.brand-logo { width: 36px; height: 36px; display: block; flex: 0 0 36px; filter: drop-shadow(0 8px 20px rgba(20,87,217,.18)); }
.brand-text { font-size: 1.06rem; }
.nav-toggle { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 14px; background: #fff; color: var(--ink); }
.nav-toggle-bars, .nav-toggle-bars::before, .nav-toggle-bars::after { display: block; width: 18px; height: 2px; background: currentColor; border-radius: 99px; content: ""; position: relative; transition: transform .18s ease, opacity .18s ease; }
.nav-toggle-bars::before { position: absolute; top: -6px; }
.nav-toggle-bars::after { position: absolute; top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(90deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { opacity: 0; }
.top-nav { display: none; position: absolute; left: 0; right: 0; top: 64px; background: #fff; border: 1px solid var(--line); border-radius: 0 0 var(--radius) var(--radius); box-shadow: var(--shadow); padding: var(--space-3); }
.top-nav.is-open { display: grid; gap: 6px; }
.top-nav a { color: var(--ink); font-weight: 700; padding: 12px; border-radius: 12px; }
.top-nav a:hover { background: var(--brand-soft); text-decoration: none; }

.hero { padding: 42px 0 28px; }
.hero-grid { display: grid; gap: 24px; }
.eyebrow { color: var(--brand); font-weight: 850; text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; margin: 0 0 8px; }
h1, h2, h3 { letter-spacing: -.035em; color: var(--ink); }
h1 { font-size: clamp(2.2rem, 8vw, 4.2rem); line-height: 1; margin: 0 0 16px; }
h2 { font-size: clamp(1.55rem, 4vw, 2.4rem); line-height: 1.12; margin: 0 0 12px; }
h3 { font-size: 1.1rem; line-height: 1.2; margin: 0 0 8px; }
p { margin-top: 0; }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 62ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 18px; border-radius: 999px; font-weight: 780; border: 1px solid transparent; cursor: pointer; }
.button.primary { background: var(--brand); color: #fff; box-shadow: 0 10px 24px rgba(20,87,217,.18); }
.button.primary:hover { background: var(--brand-dark); text-decoration: none; }
.button.secondary { background: #fff; color: var(--ink); border-color: var(--line); }
.button.secondary:hover { background: var(--brand-soft); text-decoration: none; }

.stacked-demo { display: grid; gap: 14px; }
.calculator-card, .result-card, .card, .feature-card, .source-note, .trust-note, .cta-card, .faq-block, .related-links { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: var(--space-5); box-shadow: var(--shadow-soft); }
.calculator-card { box-shadow: var(--shadow); }
.card-header p { color: var(--muted); }
.calc-form { display: grid; gap: 12px; margin-top: var(--space-4); }
.calc-form label { display: grid; gap: 6px; color: var(--muted); font-weight: 700; font-size: .92rem; }
.calc-form input { min-height: 50px; border: 1px solid var(--line); border-radius: 14px; padding: 0 14px; color: var(--ink); background: #fbfdff; font-weight: 750; }
.result-card { background: linear-gradient(135deg, #0f2d67, #1457d9); color: #fff; }
.result-card strong { display: block; font-size: clamp(2rem, 6vw, 3rem); line-height: 1; margin: 8px 0 10px; letter-spacing: -.04em; }
.result-card p, .result-label { color: rgba(255,255,255,.82); }
.result-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.result-actions button { min-height: 44px; padding: 0 14px; border: 1px solid rgba(255,255,255,.22); border-radius: 999px; background: rgba(255,255,255,.12); color: #fff; }

.section { padding: var(--space-6) 0; }
.section.muted { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-heading { max-width: 760px; margin-bottom: var(--space-5); }
.section-heading p { color: var(--muted); }
.two-col, .feature-grid, .roadmap-grid, .footer-grid, .link-card-grid { display: grid; gap: 18px; }
.feature-card { min-height: 100%; }
.feature-icon { display: inline-grid; place-items: center; width: 42px; height: 42px; border-radius: 14px; background: var(--brand-soft); margin-bottom: 14px; }
.check-list { padding-left: 1.2rem; margin-bottom: 0; }
.check-list li { margin: 8px 0; }
.content-stack { display: grid; gap: 18px; }
.trust-note { border-left: 5px solid var(--good); }
.source-note { border-left: 5px solid var(--brand); }
.faq-block details { border-top: 1px solid var(--line); padding: 14px 0; }
.faq-block details:first-of-type { border-top: 0; }
.faq-block summary { cursor: pointer; font-weight: 800; color: var(--ink); }
.link-card { display: grid; gap: 4px; padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--bg); color: var(--ink); }
.link-card:hover { background: var(--brand-soft); text-decoration: none; }
.link-card span { font-weight: 850; }
.link-card small { color: var(--muted); }
.cta-card { display: grid; gap: 16px; align-items: center; background: linear-gradient(135deg, #ffffff, #eef4ff); }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0 0 var(--space-4); color: var(--muted); }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 8px; color: #9aa9ba; }

.site-footer { padding: 34px 0 max(20px, env(safe-area-inset-bottom)); background: var(--footer); color: var(--footer-ink); flex: 0 0 auto; margin: 0; }
.footer-grid a { display: block; color: var(--footer-ink); margin: 6px 0; }
.footer-grid h2 { color: #fff; font-size: 1rem; letter-spacing: 0; }
.footer-note { color: #aebed0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.14); margin-top: 24px; padding-top: 14px; color: #aebed0; font-size: .92rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .001ms !important; animation-duration: .001ms !important; }
}

@media (min-width: 760px) {
  .nav-toggle { display: none; }
  .top-nav { display: flex; position: static; border: 0; box-shadow: none; padding: 0; background: transparent; gap: 6px; }
  .top-nav a { padding: 8px 10px; }
  .hero { padding: 76px 0 56px; }
  .hero-grid { grid-template-columns: minmax(0, 1.08fr) minmax(340px, .92fr); align-items: center; }
  .calc-form { grid-template-columns: 1fr 1fr; }
  .two-col, .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-card { grid-template-columns: 1fr auto; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
}

@media (min-width: 980px) {
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
  .link-card-grid { grid-template-columns: repeat(3, 1fr); }
}


/* interactive calculator */
.calculator-hero { padding-top: 40px; }
.trust-line { color: var(--muted); font-size: .96rem; max-width: 62ch; }
.interactive-calculator { scroll-margin-top: 84px; }
.calc-form small { color: var(--muted); font-weight: 500; line-height: 1.35; }
.input-prefix, .input-suffix { display: grid; grid-template-columns: auto 1fr; align-items: center; min-height: 50px; border: 1px solid var(--line); border-radius: 14px; background: #fbfdff; overflow: hidden; }
.input-prefix span, .input-suffix span { padding: 0 12px; color: var(--muted); font-weight: 850; }
.input-prefix input, .input-suffix input { border: 0; border-radius: 0; min-height: 48px; padding-left: 4px; }
.input-suffix { grid-template-columns: 1fr auto; }
.input-suffix input { padding-left: 14px; }
.calc-form select { min-height: 50px; border: 1px solid var(--line); border-radius: 14px; padding: 0 14px; color: var(--ink); background: #fbfdff; font-weight: 750; }
.field-span { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px; margin: 0; display: grid; gap: 10px; }
.field-span legend { color: var(--muted); font-weight: 850; padding: 0 6px; }
.radio-card { display: flex !important; grid-template-columns: auto 1fr; align-items: center; gap: 8px !important; color: var(--ink) !important; background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 10px; cursor: pointer; }
.radio-card input { width: 18px; height: 18px; min-height: auto; }
.live-result { margin-top: 16px; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.result-grid p { margin: 0; padding: 10px; border: 1px solid rgba(255,255,255,.18); border-radius: 14px; background: rgba(255,255,255,.08); }
.result-grid span { display: block; color: rgba(255,255,255,.78); font-size: .86rem; }
.result-grid b { display: block; color: #fff; font-size: 1.05rem; margin-top: 2px; }
.table-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-soft); }
.tip-table { width: 100%; border-collapse: collapse; min-width: 520px; }
.tip-table th, .tip-table td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; }
.tip-table th { background: var(--brand-soft); color: var(--ink); font-weight: 850; }
.tip-table tr:last-child td { border-bottom: 0; }
.small-note { color: var(--muted); margin: 12px 0 0; font-size: .92rem; }
.formula-list { padding-left: 1.2rem; margin-bottom: 0; }
.formula-list li { margin: 9px 0; }
.example-card { background: linear-gradient(135deg, #fff, #f5f8ff); }
@media (min-width: 760px) {
  .field-span { grid-column: span 2; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .field-span legend { grid-column: 1 / -1; }
}


/* tax calculator page additions */
.compact-hero { padding-top: clamp(1.5rem, 5vw, 3rem); }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: .45rem; margin-bottom: .75rem; font-size: .92rem; color: var(--muted-text); }
.breadcrumb a { color: var(--link); font-weight: 700; text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.card-grid.three-col { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
@media (max-width: 800px) { .card-grid.three-col { grid-template-columns: 1fr; } }


/* split bill calculator */
.split-hero-grid { align-items: start; }
.split-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin: 1rem 0; padding: .35rem; background: var(--bg); border: 1px solid var(--line); border-radius: 999px; }
.split-tab { min-height: 44px; border: 0; border-radius: 999px; background: transparent; color: var(--muted); font-weight: 850; cursor: pointer; }
.split-tab.is-active { background: var(--brand); color: #fff; box-shadow: 0 8px 18px rgba(20,87,217,.18); }
.split-panel { display: none; }
.split-panel.is-active { display: block; }
.split-help { background: var(--brand-soft); border: 1px solid #cfe0ff; border-radius: var(--radius-sm); padding: .9rem; margin: .75rem 0; }
.split-help p { margin: 0; color: var(--ink); }
.editable-list { display: grid; gap: .75rem; margin: 1rem 0; }
.editable-row { display: grid; gap: .75rem; padding: .85rem; border: 1px solid var(--line); border-radius: var(--radius-sm); background: #fff; }
.editable-row label { display: grid; gap: .4rem; color: var(--muted); font-weight: 750; }
.editable-row input { min-height: 46px; border: 1px solid var(--line); border-radius: 12px; padding: 0 .75rem; font-weight: 750; color: var(--ink); }
.remove-row { min-height: 42px; padding: 0 .85rem; border: 1px solid #ffd4d4; border-radius: 999px; background: #fff5f5; color: #9f1d1d; font-weight: 800; cursor: pointer; }
.button-row { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1rem 0; }
.compact-button { min-height: 42px; padding: 0 14px; }
.itemized-layout { display: grid; gap: 1rem; margin-top: 1rem; }
.soft-card { background: #fbfdff; box-shadow: none; }
.split-summary-wrap { margin-top: 1rem; }
.light-actions button { color: var(--ink); background: #fff; border-color: var(--line); }
@media (min-width: 760px) {
  .editable-row.custom-row { grid-template-columns: 1fr 140px auto; align-items: end; }
  .editable-row.person-row { grid-template-columns: 1fr auto; align-items: end; }
  .editable-row.item-row { grid-template-columns: 1fr 130px 1.2fr auto; align-items: end; }
  .itemized-layout { grid-template-columns: minmax(220px, .75fr) minmax(0, 1.25fr); }
}
@media (max-width: 520px) {
  .split-tabs { border-radius: var(--radius-sm); grid-template-columns: 1fr; }
  .split-tab { border-radius: 12px; }
  .result-grid { grid-template-columns: 1fr; }
}


/* service charge and automatic gratuity */
.service-calculator .calc-form { grid-template-columns: 1fr; }
.service-calculator .small-note { color: rgba(255,255,255,.82); }
@media (min-width: 760px) {
  .service-calculator .calc-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .service-calculator .calc-form label:first-child { grid-column: span 2; }
}


/* suggested tip checker */
.suggested-tip-checker .calc-form { grid-template-columns: 1fr; }
.suggested-tip-checker .small-note { color: rgba(255,255,255,.82); }
@media (min-width: 760px) {
  .suggested-tip-checker .calc-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .suggested-tip-checker .calc-form label:first-child { grid-column: span 2; }
}


/* service-specific calculators */
.service-tip-calculator .calc-form { grid-template-columns: 1fr; }
.service-tip-calculator .small-note { color: rgba(255,255,255,.82); }
@media (min-width: 760px) {
  .service-tip-calculator .calc-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .service-tip-calculator .calc-form label:first-child { grid-column: span 2; }
}

/* tip chart and amount-page helpers */
.card-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.text-link { font-weight: 700; color: var(--color-primary); text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.small-note { color: var(--color-muted); font-size: 0.95rem; }


/* state tax pages */
.state-card-grid { display: grid; gap: 1rem; }
.state-card { display: grid; gap: .35rem; padding: 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; color: var(--ink); box-shadow: var(--shadow-soft); }
.state-card:hover { background: var(--brand-soft); text-decoration: none; }
.state-code { display: inline-grid; place-items: center; width: 44px; height: 32px; border-radius: 999px; background: var(--brand); color: #fff; font-weight: 900; letter-spacing: .04em; }
.state-card strong { font-size: 1.05rem; }
.state-card small { color: var(--muted); }
.state-rate-card h2 { font-size: clamp(3rem, 10vw, 5rem); color: var(--brand); margin-bottom: .35rem; }
.rate-list { display: grid; gap: .65rem; margin: 1rem 0 0; }
.rate-list div { display: flex; justify-content: space-between; gap: 1rem; padding: .75rem; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); }
.rate-list dt { color: var(--muted); font-weight: 800; }
.rate-list dd { margin: 0; font-weight: 900; color: var(--ink); }
@media (min-width: 760px) { .state-card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .state-card-grid { grid-template-columns: repeat(3, 1fr); } }


/* trust pages */
.trust-summary-card h2 { margin-top: 0; }
.quick-facts { display: grid; gap: .75rem; margin-top: 1rem; }
.quick-facts p { display: grid; gap: .25rem; margin: 0; padding: .85rem; border: 1px solid var(--line); border-radius: 14px; background: var(--bg); }
.quick-facts span { color: var(--muted); font-size: .9rem; font-weight: 800; }
.quick-facts strong { color: var(--ink); font-size: 1.02rem; }
.trust-content-card h2 { margin-bottom: .6rem; }
.trust-content-card p:last-child { margin-bottom: 0; }
code { background: var(--brand-soft); padding: .1rem .32rem; border-radius: 6px; font-weight: 800; color: var(--brand); }

/* Core Web Vitals and accessibility hardening */
.live-result { min-height: 220px; }
.result-card { contain: layout paint; }
.calculator-card { content-visibility: auto; contain-intrinsic-size: 520px; }
button, .button, input, select { touch-action: manipulation; }
input, select, textarea { max-width: 100%; }
.table-wrap { contain: layout paint; }
@media (max-width: 520px) {
  .container { width: min(100% - 24px, 1120px); }
  .calculator-card, .result-card, .card, .feature-card, .source-note, .trust-note, .cta-card, .faq-block, .related-links { padding: 1rem; }
}


/* AdSense and CRO readiness */
.post-content-ad {
  margin-top: clamp(1rem, 3vw, 2rem);
  margin-bottom: clamp(1rem, 3vw, 2rem);
}
.ad-slot {
  min-height: var(--ad-reserve-height, 250px);
  border: 1px dashed var(--border, #d6deea);
  border-radius: var(--radius-lg, 18px);
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.94), rgba(241, 245, 249, 0.94));
  color: var(--muted-text, #526071);
  display: grid;
  place-items: center;
  gap: .35rem;
  padding: 1rem;
  text-align: center;
  contain: layout paint style;
}
.ad-slot .ad-label {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: .2rem .6rem;
  border-radius: 999px;
  border: 1px solid var(--border, #d6deea);
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted-text, #526071);
  background: #fff;
}
.ad-slot p {
  max-width: 44rem;
  margin: 0;
  font-size: .92rem;
}
.conversion-panel {
  padding: clamp(2rem, 5vw, 4rem) 0;
  background: #0f172a;
  color: #fff;
}
.conversion-panel .eyebrow,
.conversion-panel p,
.conversion-panel small {
  color: rgba(255,255,255,.78);
}
.conversion-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.25fr);
  gap: clamp(1rem, 4vw, 2rem);
  align-items: start;
}
.mini-link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .85rem;
}
.mini-link {
  display: grid;
  gap: .25rem;
  padding: 1rem;
  min-height: 96px;
  border-radius: var(--radius-md, 14px);
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: #fff;
  text-decoration: none;
}
.mini-link:hover,
.mini-link:focus-visible {
  border-color: rgba(255,255,255,.38);
  background: rgba(255,255,255,.1);
}
.mini-link span {
  font-weight: 800;
}
@media (max-width: 760px) {
  .conversion-grid,
  .mini-link-grid {
    grid-template-columns: 1fr;
  }
  .ad-slot {
    min-height: min(var(--ad-reserve-height, 250px), 180px);
  }
}


/* Post-final UI stabilization: header, spacing, and overflow control */
html, body { max-width: 100%; overflow-x: clip; }
body { -webkit-text-size-adjust: 100%; }
img, svg, video, canvas { max-width: 100%; height: auto; }
.container { max-width: 1120px; }
.site-header { z-index: 50; }
.header-inner {
  min-height: 68px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
}
.brand { min-width: 0; }
.brand-text { white-space: nowrap; }
.top-nav { max-height: calc(100vh - 82px); overflow-y: auto; }
.top-nav a { line-height: 1.2; }
.hero { padding: clamp(2rem, 5vw, 4rem) 0 clamp(1.75rem, 4vw, 3.25rem); }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.65rem); line-height: 1.04; text-wrap: balance; }
h2 { text-wrap: balance; }
.lead { font-size: clamp(1rem, 1.45vw, 1.12rem); }
.hero-grid { gap: clamp(1.25rem, 4vw, 3.25rem); }
.hero-card { align-self: center; }
.card, .calculator-card, .result-card, .feature-card, .source-note, .trust-note, .cta-card, .faq-block, .related-links {
  overflow-wrap: anywhere;
}
.link-grid { display: grid; gap: .6rem; }
.link-grid a { font-weight: 800; }
.button { text-align: center; }
.site-main { min-width: 0; flex: 1 0 auto; }

@media (max-width: 1039px) {
  .nav-toggle { display: inline-flex; }
  .top-nav {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 70px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: var(--shadow);
    padding: var(--space-3);
  }
  .top-nav.is-open { display: grid; gap: 6px; }
  body.nav-open { overflow: hidden; }
}

@media (min-width: 1040px) {
  .nav-toggle { display: none; }
  .header-inner { grid-template-columns: auto minmax(0, 1fr); }
  .top-nav {
    display: flex;
    position: static;
    justify-content: flex-end;
    align-items: center;
    gap: 4px;
    border: 0;
    box-shadow: none;
    padding: 0;
    background: transparent;
    overflow: visible;
    max-height: none;
  }
  .top-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 8px 9px;
    border-radius: 999px;
    color: var(--ink);
    font-size: .93rem;
    font-weight: 780;
    white-space: nowrap;
  }
  .top-nav a:hover { background: var(--brand-soft); text-decoration: none; }
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(320px, 440px); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; align-items: start; }
}

@media (min-width: 760px) and (max-width: 1039px) {
  .top-nav { display: none; }
  .top-nav.is-open { display: grid; }
  .nav-toggle { display: inline-flex; }
}

@media (max-width: 640px) {
  .header-inner { min-height: 62px; }
  .brand-mark { width: 34px; height: 34px; border-radius: 11px; }
  .brand-text { font-size: 1rem; }
  .top-nav { top: 64px; left: 12px; right: 12px; }
  h1 { font-size: clamp(2rem, 11vw, 2.85rem); }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .state-card-grid, .card-grid, .link-card-grid { grid-template-columns: 1fr; }
}

/* Post-final laptop UI correction: calculator grid and form overflow */
:root {
  --muted-text: #5d6b7b;
  --link: #1457d9;
  --color-primary: #1457d9;
  --color-muted: #5d6b7b;
  --border: #dce3ee;
  --radius-md: 14px;
}
.hero-grid,
.hero-copy,
.calculator-card,
.calc-form,
.calc-form > *,
.calc-form label,
.calc-form fieldset,
.input-prefix,
.input-suffix,
.input-prefix input,
.input-suffix input,
.calc-form input,
.calc-form select,
.radio-card,
.result-card,
.result-grid,
.card,
.feature-card,
.related-links,
.link-card,
.table-wrap {
  min-width: 0;
  max-width: 100%;
}
.calc-form input,
.calc-form select,
.input-prefix,
.input-suffix {
  width: 100%;
}
.calc-form select {
  overflow: hidden;
  text-overflow: ellipsis;
}
.calculator-card {
  width: 100%;
  overflow: hidden;
}
.calculator-hero .hero-grid {
  align-items: start;
}
.calculator-hero .hero-copy {
  padding-top: clamp(.5rem, 1.4vw, 1.2rem);
}
.calculator-hero .calculator-card {
  align-self: start;
}
@media (min-width: 760px) {
  .calc-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1040px) {
  .calculator-hero .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 420px);
    gap: clamp(1.5rem, 3vw, 3rem);
    align-items: start;
  }
  .calculator-hero h1 {
    font-size: clamp(2.35rem, 4.25vw, 3.35rem);
  }
  .calculator-hero .calculator-card {
    padding: clamp(1.1rem, 2vw, 1.45rem);
  }
}
@media (min-width: 1040px) and (max-width: 1240px) {
  .calculator-hero .hero-grid {
    grid-template-columns: minmax(0, .92fr) minmax(340px, 400px);
  }
  .top-nav a {
    padding-inline: 7px;
    font-size: .88rem;
  }
}
@media (max-width: 1039px) {
  .calculator-hero .hero-grid {
    grid-template-columns: 1fr;
  }
  .calculator-hero .calculator-card {
    max-width: 760px;
  }
}
@media (max-width: 640px) {
  .calc-form,
  .service-calculator .calc-form,
  .suggested-tip-checker .calc-form,
  .service-tip-calculator .calc-form {
    grid-template-columns: 1fr;
  }
  .field-span {
    grid-column: auto;
    grid-template-columns: 1fr;
  }
}


/* Version 1.20 UI polish, home calculator balance, and cookie notice */
.site-main { background: radial-gradient(circle at 12% 0%, rgba(232, 240, 255, .95), rgba(246, 248, 252, 0) 32rem), var(--bg); }
.home-hero { padding-top: clamp(2.25rem, 4.5vw, 3.5rem); padding-bottom: clamp(1.5rem, 3vw, 2.5rem); }
.home-hero .hero-grid { align-items: start; }
.hero-highlights { display: flex; flex-wrap: wrap; gap: .65rem; margin-top: 1.15rem; max-width: 54rem; }
.hero-highlights span { display: inline-flex; align-items: center; min-height: 34px; padding: .35rem .75rem; border: 1px solid rgba(20,87,217,.18); border-radius: 999px; background: rgba(255,255,255,.78); color: var(--ink); font-size: .9rem; font-weight: 760; box-shadow: 0 8px 20px rgba(16,32,51,.04); }
.home-calculator { max-width: 100%; }
.home-calculator .card-header { margin-bottom: .75rem; }
.home-calculator .card-header p:not(.eyebrow) { margin-bottom: .25rem; }
.home-calculator .calc-form { gap: .8rem; margin-top: .8rem; }
.home-calculator .calc-form label { gap: .35rem; }
.home-calculator .calc-form small { font-size: .82rem; line-height: 1.25; }
.home-calculator .input-prefix,
.home-calculator .input-suffix,
.home-calculator .calc-form input,
.home-calculator .calc-form select { min-height: 46px; }
.home-calculator .input-prefix input,
.home-calculator .input-suffix input { min-height: 44px; }
.home-calculator .field-span { padding: .65rem; gap: .55rem; }
.home-calculator .radio-card { min-height: 46px; padding: .55rem .7rem; justify-content: center; text-align: center; }
.home-calculator .live-result { min-height: 0; margin-top: .95rem; padding: 1rem; }
.home-calculator .result-card strong { font-size: clamp(1.75rem, 3.5vw, 2.25rem); margin: .35rem 0 .55rem; }
.home-calculator .result-grid { gap: .5rem; }
.home-calculator .result-grid p { padding: .65rem; border-radius: 12px; }
.home-calculator .result-grid span { font-size: .78rem; }
.home-calculator .result-grid b { font-size: .95rem; }
.home-calculator .result-actions button { min-height: 44px; }
.section { scroll-margin-top: 86px; }
.card, .calculator-card, .feature-card, .source-note, .trust-note, .cta-card, .faq-block, .related-links, .state-card { transition: box-shadow .18s ease, transform .18s ease, border-color .18s ease; }
@media (hover: hover) {
  .card:hover, .feature-card:hover, .state-card:hover, .link-card:hover { transform: translateY(-1px); box-shadow: 0 18px 42px rgba(16,32,51,.09); }
}
.cookie-banner { position: fixed; left: 50%; bottom: max(1rem, env(safe-area-inset-bottom)); transform: translateX(-50%); width: min(960px, calc(100% - 32px)); z-index: 80; contain: layout paint style; }
.cookie-banner[hidden] { display: none !important; }
.cookie-banner__content { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1rem; align-items: center; padding: .95rem 1rem; border: 1px solid rgba(220,227,238,.95); border-radius: 18px; background: rgba(255,255,255,.96); box-shadow: 0 20px 60px rgba(16,32,51,.18); backdrop-filter: blur(12px); }
.cookie-banner strong { display: block; margin-bottom: .2rem; color: var(--ink); }
.cookie-banner p { margin: 0; color: var(--muted); font-size: .92rem; line-height: 1.45; }
.cookie-banner__actions { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; justify-content: flex-end; }
.cookie-banner__actions a { font-weight: 800; color: var(--brand); }
.cookie-banner__actions button { min-height: 42px; padding: 0 1rem; border: 0; border-radius: 999px; background: var(--brand); color: #fff; font-weight: 850; cursor: pointer; box-shadow: 0 8px 20px rgba(20,87,217,.2); }
.cookie-banner__actions button:hover { background: var(--brand-dark); }
@media (min-width: 1040px) {
  .home-hero .hero-grid { grid-template-columns: minmax(0, .95fr) minmax(440px, 480px); gap: clamp(2rem, 4vw, 3.5rem); }
  .home-calculator { padding: clamp(1.1rem, 1.8vw, 1.35rem); }
  .home-calculator h2 { font-size: clamp(1.8rem, 2.5vw, 2.45rem); }
}
@media (min-width: 1240px) {
  .home-hero .hero-grid { grid-template-columns: minmax(0, .98fr) minmax(460px, 500px); }
}
@media (max-width: 1039px) {
  .home-hero .calculator-card { max-width: 760px; }
}
@media (max-width: 760px) {
  .cookie-banner { width: min(100% - 24px, 560px); }
  .cookie-banner__content { grid-template-columns: 1fr; }
  .cookie-banner__actions { justify-content: stretch; }
  .cookie-banner__actions button { flex: 1; }
}
@media (max-width: 520px) {
  .home-calculator .calc-form small { display: block; }
  .home-calculator .radio-card { justify-content: flex-start; text-align: left; }
  .hero-highlights { display: grid; }
}


/* Version 1.20 homepage quick calculator compaction */
.advanced-options { background: rgba(246,248,252,.72); }
.advanced-options summary { cursor: pointer; font-weight: 850; color: var(--ink); list-style-position: inside; }
.advanced-options-grid { display: grid; gap: .8rem; margin-top: .85rem; }
.advanced-options-grid fieldset { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: .65rem; margin: 0; display: grid; gap: .55rem; }
.advanced-options-grid legend { color: var(--muted); font-weight: 850; padding: 0 .35rem; }
@media (min-width: 1040px) {
  .home-calculator .calc-form small { display: none; }
  .home-calculator .card-header p:not(.eyebrow) { display: none; }
  .home-calculator .calc-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .home-calculator .advanced-options-grid { grid-template-columns: 1fr; }
  .home-calculator .live-result { padding: .9rem; }
  .home-calculator .result-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .home-calculator .result-actions { margin-top: .65rem; }
}
@media (min-width: 1240px) {
  .home-hero .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(420px, 460px); }
}

/* Version 1.21 search, 404 recovery, and SEO polish */
.nav-search-link { border: 1px solid rgba(210,221,236,.9); border-radius: 999px; padding: .42rem .72rem; background: rgba(255,255,255,.72); }
.nav-search-link:hover { background: #eef5ff; }
.search-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 3rem); align-items: start; }
.search-copy { min-width: 0; max-width: 720px; }
.search-panel { min-width: 0; border: 1px solid var(--line); border-radius: 24px; background: rgba(255,255,255,.96); box-shadow: var(--shadow); padding: clamp(1rem, 2.5vw, 1.45rem); }
.site-search-form { margin-top: 1rem; }
.search-input-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .65rem; align-items: center; border: 1px solid rgba(203,213,225,.95); background: #fff; border-radius: 18px; padding: .45rem; box-shadow: 0 10px 28px rgba(15,23,42,.06); }
.search-input-row input { min-width: 0; width: 100%; min-height: 48px; border: 0; background: transparent; padding: 0 .8rem; font: inherit; color: var(--ink); outline: none; }
.search-input-row input::placeholder { color: #7c8797; }
.search-input-row button { min-height: 48px; border: 0; border-radius: 14px; background: var(--brand); color: #fff; font-weight: 850; padding: 0 1rem; cursor: pointer; box-shadow: 0 10px 22px rgba(20,87,217,.18); }
.search-input-row button:hover { background: var(--brand-dark); }
.popular-searches { display: flex; gap: .55rem; flex-wrap: wrap; margin-top: .8rem; }
.popular-searches a { display: inline-flex; align-items: center; min-height: 34px; border: 1px solid rgba(210,221,236,.9); border-radius: 999px; background: #f8fbff; padding: 0 .75rem; font-weight: 750; color: var(--brand); }
.search-results { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .9rem; }
.search-result-card { display: grid; gap: .35rem; min-width: 0; border: 1px solid var(--line); border-radius: 18px; background: #fff; padding: 1rem; color: var(--ink); box-shadow: 0 10px 26px rgba(15,23,42,.06); transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease; }
.search-result-card:hover { transform: translateY(-2px); border-color: rgba(20,87,217,.35); box-shadow: 0 16px 34px rgba(15,23,42,.1); }
.search-result-card strong { font-size: 1.02rem; line-height: 1.25; }
.search-result-card small { color: var(--muted); line-height: 1.45; }
.search-result-section { color: var(--brand); font-size: .72rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.search-empty { grid-column: 1 / -1; }
.compact-results { grid-template-columns: 1fr; margin-top: .85rem; }
.not-found-hero { min-height: 62vh; display: flex; align-items: center; }
.recovery-grid { align-items: stretch; }
.compact-heading { max-width: 760px; }
@media (min-width: 900px) {
  .search-layout { grid-template-columns: minmax(0, .95fr) minmax(380px, 520px); }
  .search-page-hero, .not-found-hero { padding-top: clamp(2.25rem, 5vw, 4rem); padding-bottom: clamp(2rem, 4vw, 3.5rem); }
}
@media (max-width: 900px) {
  .search-results { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nav-search-link { padding: .6rem .75rem; }
}
@media (max-width: 640px) {
  .search-input-row { grid-template-columns: 1fr; }
  .search-input-row button { width: 100%; }
  .search-results { grid-template-columns: 1fr; }
}


/* Version 1.26: full-width Split Bill Calculator modes and stable editable grids */
.split-page-layout { align-items: start; }
.split-page-layout .hero-copy { max-width: 760px; }
.split-page-layout .split-calculator-card { width: 100%; max-width: 1120px; }
.editable-list,
.editable-row,
.editable-row > *,
.editable-row label,
.editable-row input,
.editable-row button,
.itemized-layout,
.itemized-layout > *,
.split-summary-wrap { min-width: 0; max-width: 100%; }
.editable-row { align-items: end; }
.editable-row label { min-width: 0; }
.editable-row input { width: 100%; min-width: 0; }
.remove-row { width: auto; height: 46px; min-height: 46px; align-self: end; white-space: nowrap; }
.itemized-layout .card { min-width: 0; padding: clamp(1rem, 2vw, 1.35rem); }
.itemized-layout .editable-list { gap: .75rem; }
.split-summary-wrap .tip-table th,
.split-summary-wrap .tip-table td { white-space: nowrap; }
@media (min-width: 1040px) {
  .split-page-layout { grid-template-columns: minmax(0, 1fr); gap: clamp(1.5rem, 3vw, 2.4rem); }
  .split-page-layout .hero-copy { padding-top: 0; }
  .split-page-layout .split-calculator-card { grid-column: 1 / -1; }
  .split-page-layout .split-panel { max-width: none; }
  .editable-row.custom-row { grid-template-columns: minmax(0, 1fr) minmax(104px, 140px) max-content; }
  .editable-row.person-row { grid-template-columns: minmax(0, 1fr) max-content; }
  .editable-row.item-row { grid-template-columns: minmax(0, .82fr) minmax(112px, .36fr) minmax(0, 1fr) max-content; }
  .itemized-layout { grid-template-columns: minmax(250px, .78fr) minmax(0, 1.22fr); align-items: start; }
}
@media (min-width: 760px) and (max-width: 1039px) {
  .editable-row.custom-row { grid-template-columns: minmax(0, 1fr) minmax(96px, 128px) max-content; }
  .editable-row.item-row { grid-template-columns: minmax(0, 1fr) minmax(104px, 128px) minmax(0, 1fr) max-content; }
}
@media (max-width: 759px) {
  .split-page-layout .split-calculator-card { padding: 1rem; }
  .remove-row { width: 100%; }
  .itemized-layout { grid-template-columns: 1fr; }
  .split-summary-wrap .tip-table { min-width: 680px; }
}


/* v1.27 provenance and state-specific decision support */
.page-freshness { padding-top: .7rem; font-size: .84rem; color: var(--muted); }
.page-freshness p { margin: 0; }
.page-freshness span + span::before { content: "•"; margin: 0 .4rem; color: #9aa9ba; }
.state-guidance-list { padding-left: 1.2rem; margin: 0; }
.state-guidance-list li { margin: .7rem 0; }
.state-lookup-card a { font-weight: 800; }
@media (max-width: 760px) { .page-freshness { padding-top: .55rem; } }


/* v1.30 production visual polish */
.site-main > .section:first-child,
.site-main > .hero:first-child {
  padding-top: clamp(2.25rem, 5vw, 4rem);
}
.content-stack {
  gap: clamp(1rem, 2.2vw, 1.55rem);
}
.content-stack > .breadcrumb {
  margin-bottom: 0;
}
.trust-page-specific-summary {
  margin-top: clamp(.25rem, 1vw, .6rem);
}
.trust-content-card h2,
.faq-block h2,
.related-links h2,
.card h2 {
  letter-spacing: -.025em;
}
.hub-group + .hub-group {
  margin-top: clamp(2rem, 4vw, 3.25rem);
}
.hub-card-grid,
.amount-grid {
  align-items: stretch;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}
.hub-link-card,
.amount-card {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  min-height: 100%;
}
.hub-link-card h3 {
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.25;
  margin-bottom: .2rem;
}
.hub-link-card p,
.amount-card p {
  color: var(--muted);
}
.amount-card h2 {
  font-size: clamp(1.08rem, 1.7vw, 1.35rem);
  line-height: 1.16;
  margin-bottom: .25rem;
}
.amount-card .text-link {
  margin-top: auto;
}
.guide-example-section .table-wrap {
  background: #fff;
}
.comparison-table {
  min-width: 480px;
}
.comparison-table td,
.comparison-table th {
  white-space: nowrap;
}
.state-source-card {
  overflow-wrap: normal;
}
.state-source-list {
  gap: .7rem;
}
.state-source-list div {
  display: grid;
  grid-template-columns: minmax(132px, .36fr) minmax(0, 1fr);
  gap: .85rem;
  align-items: start;
}
.state-source-list dt {
  white-space: normal;
  overflow-wrap: normal;
}
.state-source-list dd {
  min-width: 0;
  text-align: left;
  overflow-wrap: anywhere;
  line-height: 1.45;
}
.state-source-list a {
  font-weight: 850;
}
.footer-bottom {
  display: grid;
  gap: .35rem;
}
.page-freshness {
  padding-top: 0;
  color: #aebed0;
}
.page-freshness p,
.page-freshness {
  margin: 0;
}
.page-freshness span + span::before {
  content: "•";
  margin: 0 .4rem;
  color: rgba(219,231,247,.58);
}
@media (min-width: 1280px) {
  .container { max-width: 1180px; }
}
@media (min-width: 1600px) {
  .container { max-width: 1240px; }
}
@media (min-width: 980px) {
  .hub-card-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .amount-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 1180px) {
  .amount-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .state-source-list div {
    grid-template-columns: 1fr;
    gap: .25rem;
  }
  .comparison-table {
    min-width: 420px;
  }
}

/* Live AdSense slots are emitted only when ad-config.json is enabled and valid. */
.ad-slot--live {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  align-items: start;
}
.ad-slot--live .adsbygoogle {
  width: 100%;
  min-height: calc(var(--ad-reserve-height, 250px) - 42px);
}

/* v1.30 screen-reader and keyboard accessibility polish */
.top-nav a[aria-current="page"] {
  background: var(--brand-soft);
  color: var(--brand-dark);
}
.nav-toggle[aria-expanded="true"] {
  border-color: rgba(20,87,217,.35);
  background: var(--brand-soft);
}
.cookie-banner[role="dialog"] {
  outline: none;
}
@media (forced-colors: active) {
  .button,
  .nav-toggle,
  .top-nav a,
  .link-card,
  .card,
  .calculator-card,
  .result-card,
  .table-wrap {
    border: 1px solid CanvasText;
  }
  .button.primary,
  .result-card {
    forced-color-adjust: none;
    background: Highlight;
    color: HighlightText;
  }
}

/* v1.30 visual correction pass from screenshot QA */
.card h2,
.source-note h2,
.trust-note h2,
.related-links h2,
.faq-block h2,
.cta-card h2 {
  font-size: clamp(1.25rem, 1.8vw, 1.8rem);
  line-height: 1.18;
  letter-spacing: -.02em;
}
.hero-card h2,
.trust-summary-card h2 {
  font-size: clamp(1.25rem, 1.65vw, 1.7rem);
}
.trust-page-specific-summary {
  margin-top: clamp(.75rem, 1.8vw, 1.25rem);
}
.trust-page-specific-summary h2 {
  margin-bottom: .85rem;
}
.hub-group {
  padding-block: clamp(.35rem, 1vw, .65rem);
}
.hub-group + .hub-group {
  margin-top: clamp(2.4rem, 5vw, 4rem);
}
.hub-card-grid {
  gap: clamp(1rem, 1.8vw, 1.35rem);
}
.hub-link-card {
  min-height: 190px;
  padding: clamp(1.1rem, 1.8vw, 1.45rem);
}
.amount-card h2 {
  font-size: clamp(1rem, 1.25vw, 1.2rem);
  line-height: 1.18;
}
.amount-card {
  padding: clamp(1rem, 1.7vw, 1.25rem);
}
.guide-example-section .section-heading {
  max-width: 820px;
}
.guide-example-section .table-wrap {
  max-width: 760px;
  box-shadow: 0 16px 40px rgba(16,32,51,.08);
}
.guide-example-section .tip-table {
  min-width: 0;
}
.guide-example-section .tip-table th,
.guide-example-section .tip-table td {
  padding: 16px 20px;
}
.state-source-card .rate-list div {
  grid-template-columns: minmax(150px, .34fr) minmax(0, 1fr);
}
.state-source-card .rate-list dt {
  line-height: 1.35;
}
.state-source-card .rate-list dd {
  font-weight: 780;
}
@media (min-width: 760px) and (max-width: 939px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 939px) {
  .state-source-card .rate-list div {
    grid-template-columns: minmax(130px, .32fr) minmax(0, 1fr);
  }
}
@media (max-width: 640px) {
  .state-source-card .rate-list div {
    grid-template-columns: 1fr;
  }
  .guide-example-section .tip-table {
    min-width: 390px;
  }
}

/* v1.30 footer bottom gap fix */
html,
body {
  background-color: var(--footer);
}
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.site-header,
.conversion-panel,
.site-footer {
  flex: 0 0 auto;
}
.site-main {
  flex: 1 0 auto;
}
.site-footer {
  margin-bottom: 0;
  padding-bottom: max(20px, env(safe-area-inset-bottom));
  content-visibility: visible;
  contain-intrinsic-size: auto;
}