:root {
  --bg: #f7f9fc;
  --bg-card: #ffffff;
  --bg-hero: #eef2f9;
  --bg-warm: #f0f7f5;
  --bg-warn: #fff8e6;
  --bg-good: #ecf7f2;
  --ink: #0d1b2a;
  --ink-soft: #4b5560;
  --ink-faded: #6b7689;
  --rule: #e4e9f2;
  --rule-strong: #d8dfeb;
  --accent: #0a8a7a;
  --accent-dark: #07635a;
  --accent-light: #d6efe9;
  --warn: #b35900;
  --good: #166c4a;
  --sans: 'Plus Jakarta Sans', -apple-system, system-ui, 'Segoe UI', Roboto, sans-serif;
  --serif: 'Instrument Serif', Georgia, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.container-wide { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* Navigation */
nav.site-nav {
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background: rgba(247, 249, 252, 0.92);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand span { color: var(--accent); }

.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--accent); }

.back-link {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.back-link::before { content: '\2190'; font-size: 18px; }
.back-link:hover { color: var(--accent); }

/* Hero / page head */
.page-head {
  padding: 80px 0 48px;
  border-bottom: 1px solid var(--rule);
  background: var(--bg-hero);
}

.page-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

h1 {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin-bottom: 18px;
  color: var(--ink);
}

h1 em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}

.lede {
  font-size: clamp(16px, 1.6vw, 18px);
  color: var(--ink-soft);
  line-height: 1.6;
  max-width: 580px;
}

.page-meta {
  font-size: 13px;
  color: var(--ink-faded);
  margin-top: 14px;
}

/* Breadcrumb */
.breadcrumb {
  font-size: 12px;
  color: var(--ink-faded);
  margin-bottom: 14px;
}
.breadcrumb a { color: var(--ink-faded); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { margin: 0 8px; color: var(--rule-strong); }

/* Main content */
main { padding: 56px 0 96px; }

main h2 {
  font-size: 24px;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
main h2:first-child { margin-top: 0; }

main h3 {
  font-size: 17px;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 10px;
  color: var(--ink);
}

main p {
  color: var(--ink-soft);
  margin-bottom: 16px;
  font-size: 16px;
}

main ul, main ol {
  color: var(--ink-soft);
  margin: 12px 0 20px;
  padding-left: 22px;
}

main li {
  margin-bottom: 8px;
  font-size: 16px;
}

main a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}
main a:hover { color: var(--accent-dark); }

main strong { color: var(--ink); font-weight: 600; }

code {
  background: var(--bg-hero);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: 'SF Mono', Menlo, monospace;
  color: var(--ink);
}

/* Cards & callouts */
.callout {
  background: var(--bg-warm);
  border-left: 3px solid var(--accent);
  padding: 18px 22px;
  border-radius: 0 12px 12px 0;
  margin: 24px 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.callout-warn {
  background: var(--bg-warn);
  border-left-color: var(--warn);
}

.callout-good {
  background: var(--bg-good);
  border-left-color: var(--good);
}

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

.info-card {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 24px;
  margin: 24px 0;
}

.info-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 15px;
}
.info-row:last-child { border-bottom: none; }
.info-label {
  font-weight: 600;
  color: var(--ink-faded);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.info-value { color: var(--ink); }

/* Tables */
.data-table-wrap { overflow-x: auto; margin: 16px 0; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  border: 1px solid var(--rule);
  border-radius: 12px;
  overflow: hidden;
}

.data-table thead {
  background: var(--bg-hero);
}

.data-table th {
  text-align: left;
  padding: 12px 16px;
  font-weight: 600;
  color: var(--ink);
  font-size: 13px;
  border-bottom: 1px solid var(--rule);
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--rule);
  color: var(--ink-soft);
}

.data-table tbody tr:last-child td { border-bottom: none; }

.data-table td.strong, .data-table td a { color: var(--ink); font-weight: 500; }
.data-table td a { color: var(--accent); text-decoration: none; }
.data-table td a:hover { text-decoration: underline; }

/* Calculator card */
.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 16px;
  padding: 28px;
  margin: 24px 0;
}

.calc-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}
.calc-row:last-child { margin-bottom: 0; }

.calc-field { display: flex; flex-direction: column; }

.calc-field label {
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 500;
  margin-bottom: 6px;
}

.calc-field .input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.calc-field .currency {
  position: absolute;
  left: 12px;
  color: var(--ink-faded);
  font-size: 14px;
  pointer-events: none;
}

.calc-field input,
.calc-field select {
  width: 100%;
  font: inherit;
  font-size: 15px;
  padding: 10px 14px;
  border: 1px solid var(--rule-strong);
  border-radius: 8px;
  background: white;
  color: var(--ink);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.calc-field input.has-currency { padding-left: 26px; }

.calc-field input:focus,
.calc-field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(10, 138, 122, 0.15);
}

/* Result cards (metric grid) */
.result-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 20px 0;
}

@media (min-width: 720px) {
  .result-grid { grid-template-columns: repeat(4, 1fr); }
}

.result-card {
  background: var(--bg-hero);
  border-radius: 10px;
  padding: 14px 16px;
}

.result-card.warn { background: var(--bg-warn); }

.result-label {
  font-size: 12px;
  color: var(--ink-faded);
  margin-bottom: 4px;
}

.result-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.015em;
}

.result-card.warn .result-value { color: var(--warn); }

/* Recommendation banner */
.rec-banner {
  border: 1px solid;
  border-radius: 12px;
  padding: 16px 20px;
  margin: 16px 0;
  font-size: 15px;
  line-height: 1.55;
}

.rec-banner.rec-warn {
  background: var(--bg-warn);
  border-color: rgba(179, 89, 0, 0.25);
  color: #5c3300;
}

.rec-banner.rec-good {
  background: var(--bg-good);
  border-color: rgba(22, 108, 74, 0.25);
  color: #0a4530;
}

.rec-banner.rec-info {
  background: var(--bg-warm);
  border-color: rgba(10, 138, 122, 0.25);
  color: var(--accent-dark);
}

.rec-title {
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 6px;
}

.rec-banner.rec-warn .rec-title::before { content: '⚠ '; }
.rec-banner.rec-good .rec-title::before { content: '\2713 '; }

/* Chart container */
.chart-wrap {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 20px;
  margin: 16px 0;
}

.chart-title {
  font-size: 13px;
  color: var(--ink-faded);
  margin-bottom: 12px;
}

.chart-wrap canvas { max-width: 100%; height: 240px !important; }

/* Disclaimer text */
.disclaimer {
  font-size: 12px;
  color: var(--ink-faded);
  line-height: 1.6;
  margin-top: 12px;
}

/* Step cards */
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 24px;
  margin: 14px 0;
}

.step-card h3 { margin-top: 0; }

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 12px;
}

/* Pill nav for plan list / salary list */
.pill-grid {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 16px 0 24px;
}

.pill {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 100px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  transition: all 0.15s;
}

.pill:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 16px 0;
}

@media (min-width: 600px) {
  .card-grid { grid-template-columns: 1fr 1fr; }
}

.link-card {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 18px 20px;
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.15s, transform 0.15s;
  display: block;
}

.link-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.link-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--ink);
}

.link-card p {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.5;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--rule);
  padding: 18px 0;
}
.faq-item:last-child { border-bottom: none; }

.faq-q {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.faq-a {
  color: var(--ink-soft);
  font-size: 15px;
  margin: 0;
}

/* Footer */
footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 36px;
  font-size: 14px;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 1100px;
  margin: 0 auto 32px;
  padding: 0 24px;
}

@media (min-width: 720px) {
  .footer-cols { grid-template-columns: repeat(4, 1fr); }
}

.footer-col h4 {
  color: white;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer-col ul { list-style: none; padding: 0; }

.footer-col li { margin-bottom: 8px; }

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 14px;
}

.footer-col a:hover { color: var(--accent-light); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 24px 0;
  color: rgba(255, 255, 255, 0.55);
  font-size: 12px;
  line-height: 1.6;
}

.footer-bottom a { color: rgba(255, 255, 255, 0.55); text-decoration: underline; }

/* Mobile */
@media (max-width: 600px) {
  .nav-links { gap: 16px; }
  .nav-links a:not(.always-show) { display: none; }
  .page-head { padding: 60px 0 36px; }
  main { padding: 40px 0 60px; }
  main h2 { font-size: 21px; margin-top: 36px; }
  .info-row { grid-template-columns: 1fr; gap: 4px; padding: 10px 0; }
  .calc-card { padding: 20px; }
  .calc-row { grid-template-columns: 1fr; gap: 12px; }
  .step-card { padding: 20px; }
}