:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #4b5563;
  --line: #d1d5db;
  --paper: #ffffff;
  --soft: #f3f6f8;
  --brand: #0f766e;
  --brand-dark: #115e59;
  --accent: #b45309;
  --danger: #b91c1c;
  --shadow: 0 18px 45px rgba(17, 24, 39, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--soft);
}

a {
  color: inherit;
}

.page-shell {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.site-header {
  display: flex;
  align-items: center;
  min-height: 72px;
  padding: 4px 0 12px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
}

.brand-link img {
  display: block;
  width: 138px;
  height: auto;
}

.hero {
  padding: 18px 0 24px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--brand-dark);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  max-width: 820px;
  font-size: clamp(2rem, 6vw, 4rem);
}

h2 {
  font-size: clamp(1.45rem, 4vw, 2.2rem);
}

.lede {
  max-width: 780px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.12rem;
}

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 18px;
  align-items: start;
}

.calculator-panel,
.results-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.calculator-panel {
  display: grid;
  gap: 18px;
  padding: 22px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field-group {
  display: grid;
  gap: 8px;
}

label,
legend {
  font-weight: 800;
}

input,
select {
  width: 100%;
  min-height: 52px;
  border: 2px solid #cbd5e1;
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

input:focus,
select:focus {
  border-color: var(--brand);
  outline: 3px solid rgba(15, 118, 110, 0.2);
}

.money-input {
  display: grid;
  grid-template-columns: 44px 1fr;
  overflow: hidden;
  border: 2px solid #cbd5e1;
  border-radius: 8px;
  background: #fff;
}

.money-input:focus-within {
  border-color: var(--brand);
  outline: 3px solid rgba(15, 118, 110, 0.2);
}

.money-input span {
  display: grid;
  place-items: center;
  background: #e5e7eb;
  font-weight: 800;
}

.money-input input {
  border: 0;
  border-radius: 0;
}

.money-input input:focus {
  outline: 0;
}

.choice-field {
  display: grid;
  gap: 10px;
  margin: 0;
  border: 0;
  padding: 0;
}

.choice-field label {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px;
  align-items: center;
  min-height: 54px;
  border: 2px solid #cbd5e1;
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
  cursor: pointer;
}

.choice-field label:has(input:checked) {
  border-color: var(--brand);
  background: #ecfdf5;
}

.choice-field input {
  min-height: auto;
  width: 20px;
  height: 20px;
}

.choice-field strong {
  display: block;
}

.results-panel {
  position: sticky;
  top: 16px;
  padding: 22px;
}

.range-card {
  display: grid;
  gap: 8px;
  margin: 4px 0 18px;
  border-radius: 8px;
  padding: 20px;
  background: #0f172a;
  color: #fff;
}

.range-card span,
.result-list span {
  color: #64748b;
  font-size: 0.95rem;
  font-weight: 700;
}

.range-card span {
  color: #cbd5e1;
}

.range-card strong {
  font-size: clamp(1.7rem, 5vw, 2.55rem);
  line-height: 1.08;
}

.result-list {
  display: grid;
  gap: 10px;
}

.result-list div {
  display: grid;
  gap: 4px;
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 10px;
}

.result-list strong {
  font-size: 1.15rem;
}

.message-stack {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.message {
  border-left: 5px solid var(--accent);
  border-radius: 6px;
  padding: 12px 14px;
  background: #fffbeb;
  color: #3f2e07;
  font-weight: 700;
}

.affiliate-section,
.internal-links {
  margin-top: 28px;
  padding: 26px 0;
}

.section-heading {
  margin-bottom: 16px;
}

.affiliate-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.affiliate-card {
  display: grid;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: var(--paper);
}

.affiliate-card h3 {
  margin: 0;
  font-size: 1.05rem;
}

.affiliate-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  border-radius: 8px;
  padding: 12px 14px;
  background: var(--brand);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.button:hover {
  background: var(--brand-dark);
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.link-grid a {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: #fff;
  color: var(--brand-dark);
  font-weight: 800;
  text-decoration: none;
}

@media (max-width: 900px) {
  .tool-layout,
  .affiliate-grid,
  .link-grid {
    grid-template-columns: 1fr;
  }

  .results-panel {
    position: static;
  }
}

@media (max-width: 620px) {
  .page-shell {
    width: min(100% - 18px, 1180px);
    padding-top: 14px;
  }

  .site-header {
    min-height: 62px;
  }

  .brand-link img {
    width: 118px;
  }

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

  .calculator-panel,
  .results-panel {
    padding: 16px;
  }
}