:root {
  --ink: #0f2a35;
  --muted: #4d6770;
  --line: #c6d9dd;
  --surface: #ffffff;
  --surface-soft: #f4f8f7;
  --primary: #114b42;
  --primary-strong: #0b3c35;
  --secondary: #dc7c2f;
  --danger: #8a2d2d;
  --danger-bg: #fff1f0;
  --success-bg: #eaf7ef;
  --success-fg: #1f6b3a;
  --shadow: 0 12px 32px rgba(17, 48, 57, 0.12);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: "Manrope", "Nunito Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background: #edf3f1;
  line-height: 1.5;
}

.site-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 480px at 4% -15%, rgba(17, 75, 66, 0.18), transparent 60%),
    radial-gradient(960px 520px at 100% 0%, rgba(220, 124, 47, 0.2), transparent 62%),
    linear-gradient(160deg, #eff5f3 0%, #f7fbfa 100%);
}

.page-wrap { max-width: 1160px; margin: 0 auto; padding: 18px 14px 36px; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  display: inline-grid;
  place-items: center;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(140deg, var(--primary) 0%, var(--secondary) 100%);
  box-shadow: var(--shadow);
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
}

.top-nav { display: inline-flex; gap: 8px; flex-wrap: wrap; }

.nav-link {
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 13px;
  font-size: 0.9rem;
  background: rgba(255, 255, 255, 0.84);
  transition: 0.2s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  border-color: var(--primary);
  transform: translateY(-1px);
}

.nav-link.is-active {
  color: #fff;
  border-color: var(--primary);
  background: linear-gradient(140deg, var(--primary) 0%, var(--primary-strong) 100%);
}

.card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.main-stack { display: grid; gap: 12px; }

.hero h1 {
  margin: 0 0 10px;
  text-align: center;
  font-family: "Merriweather", Georgia, serif;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.25;
}

.hero h1 span { display: block; }
.hero p { margin: 0; }

.eyebrow {
  margin: 0 0 8px;
  display: inline-block;
  color: var(--primary);
  background: #e8f3f1;
  border: 1px solid #cde1dd;
  border-radius: 999px;
  padding: 4px 10px;
  font-weight: 700;
  font-size: 0.78rem;
}

.quick-links {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.quick-links a {
  color: var(--primary-strong);
  text-decoration: none;
  font-weight: 700;
  border-bottom: 1px dashed rgba(17, 75, 66, 0.35);
}

.answer-box h2,
.content-grid h2,
.faq h2,
.calc-input h2,
.calc-result h2,
.related-links h2 {
  margin: 0 0 10px;
  font-family: "Merriweather", Georgia, serif;
  font-size: 1.2rem;
}

.answer-box p { margin: 0; color: var(--muted); }

.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.field span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.84rem;
}

input, select, button { font: inherit; }

input, select {
  width: 100%;
  height: 42px;
  border: 1px solid #b7cfd5;
  border-radius: 10px;
  padding: 8px 10px;
  background: #fff;
  color: var(--ink);
}

.test-group { margin-top: 12px; }

.test-group h3,
.calc-result h3 {
  margin: 0 0 8px;
  font-family: "Merriweather", Georgia, serif;
  font-size: 1rem;
}

.input-row {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 100px 100px;
  gap: 8px;
  align-items: center;
  margin-bottom: 7px;
}

.test-title {
  margin: 0;
  font-size: 0.92rem;
}

.num-wrap { position: relative; }

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}

.actions .field { grid-column: span 1; }

.btn {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 700;
}

.btn.primary {
  color: #fff;
  background: linear-gradient(140deg, var(--primary) 0%, var(--primary-strong) 100%);
}

.btn.ghost {
  color: var(--primary-strong);
  border: 1px dashed #9fbab7;
  background: #f9fdfc;
}

.btn.soft {
  color: var(--ink);
  border: 1px solid #c7d9dd;
  background: #ffffff;
}

.mini {
  margin: 10px 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.warn {
  border: 1px solid #f2c0bc;
  background: var(--danger-bg);
  color: var(--danger);
  border-radius: 10px;
  padding: 9px;
  font-size: 0.86rem;
  margin-bottom: 10px;
}

.action-feedback {
  border-radius: 10px;
  padding: 9px;
  font-size: 0.86rem;
  margin-bottom: 10px;
  border: 1px solid #dbe6e8;
  background: #f8fbfb;
  color: #37505a;
  min-height: 38px;
}

.action-feedback.success {
  background: var(--success-bg);
  border-color: #cde8d6;
  color: var(--success-fg);
}

.action-feedback.error {
  background: var(--danger-bg);
  border-color: #f2c0bc;
  color: var(--danger);
}

.compare-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 8px;
}

.compare-toggle input { width: auto; height: auto; }

.share-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0;
}

.kpis {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.kpi-card {
  border: 1px solid #d5e3e7;
  border-radius: 12px;
  padding: 10px;
  background: linear-gradient(180deg, #ffffff 0%, #f5f9f8 100%);
}

.kpi-track { display: block; color: var(--muted); font-size: 0.78rem; }
.kpi-value { font-size: 1.36rem; font-weight: 800; margin: 3px 0; }
.kpi-meta { display: block; color: var(--muted); font-size: 0.82rem; }

.recent-wrap { display: grid; gap: 8px; }

.year-block {
  border: 1px solid #d7e5e8;
  border-radius: 12px;
  padding: 10px;
}

.year-block h4 { margin: 0 0 8px; font-size: 1rem; }

.year-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

.year-cell {
  border: 1px solid #dbe6ea;
  border-radius: 10px;
  padding: 8px;
  background: #fbfdfd;
}

.year-cell b,
.year-cell span,
.year-cell small { display: block; }

.year-cell span { margin: 3px 0; }
.year-cell small { color: var(--muted); }

.notes-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.88rem;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.content-grid,
.faq,
.related-links {
  content-visibility: auto;
  contain-intrinsic-size: 1px 560px;
}

.content-grid p,
.content-grid li,
.faq p { color: var(--muted); }

.content-grid ul,
.content-grid ol { margin: 0; padding-left: 18px; }

.faq details {
  border: 1px solid #d8e4e7;
  border-radius: 10px;
  padding: 10px;
  background: #fbfefd;
  margin-bottom: 8px;
}

.faq summary { cursor: pointer; font-weight: 700; }

.related-links ul {
  margin: 0;
  padding-left: 18px;
}

.related-links a {
  color: var(--primary-strong);
  text-decoration: none;
  border-bottom: 1px dashed rgba(17, 75, 66, 0.35);
}

.ad-slot {
  display: none;
  margin-top: 10px;
  border: 1px dashed #b7c8cc;
  border-radius: 10px;
  padding: 12px;
  text-align: center;
  color: var(--muted);
}

.is-live .ad-slot { display: block; }

.site-footer {
  margin-top: 14px;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
}

.site-footer a {
  color: var(--primary);
  text-decoration: none;
}

.hidden { display: none; }

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

.print-frame {
  position: fixed;
  width: 0;
  height: 0;
  border: 0;
  opacity: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(10px);
  animation: revealIn 0.5s ease forwards;
}

@keyframes revealIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 980px) {
  .calc-layout,
  .content-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero h1 {
    font-size: clamp(1.25rem, 6.4vw, 1.7rem);
  }

  .input-row {
    grid-template-columns: 1fr 86px 86px;
  }

  .actions {
    grid-template-columns: 1fr;
  }

  .kpis,
  .year-grid {
    grid-template-columns: 1fr;
  }
}
body.page-yks {
  --primary: #114b42;
  --primary-strong: #0b3c35;
  --secondary: #dc7c2f;
}

body.page-tyt {
  --primary: #124a71;
  --primary-strong: #0d3551;
  --secondary: #e19a2f;
}

body.page-ayt {
  --primary: #5a2f79;
  --primary-strong: #3d2054;
  --secondary: #de7b33;
}

body.page-tyt .hero,
body.page-ayt .hero,
body.page-yks .hero {
  border-width: 1.5px;
}

body.page-tyt .hero {
  background: linear-gradient(140deg, #ffffff 0%, #f0f7fc 100%);
}

body.page-ayt .hero {
  background: linear-gradient(140deg, #ffffff 0%, #f8f1fc 100%);
}

body.page-yks .hero {
  background: linear-gradient(140deg, #ffffff 0%, #f1faf7 100%);
}