:root {
  --primary: #0B3D91;
  --accent: #0057ff;
  --success: #0F9D58;
  --bg: #F7F9FC;
  --card-bg: #FFFFFF;
  --border: #E3E8F0;
  --text: #1A1A1A;
  --text-muted: #5B6472;
  --radius-card: 12px;
  --radius-control: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06);
}

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

body {
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

header {
  background: var(--card-bg);
  padding: 15px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

header .logo {
  font-size: 20px;
  font-weight: bold;
  color: var(--primary);
  text-decoration: none;
}

nav a {
  margin-left: 15px;
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
}

nav a:hover,
nav a:focus-visible {
  color: var(--accent);
}

main {
  max-width: 700px;
  margin: 30px auto;
  padding: 0 20px;
}

h1 {
  color: var(--primary);
  font-size: 28px;
  margin-bottom: 6px;
}

h2 {
  color: var(--text);
  font-size: 21px;
  margin-top: 10px;
}

h3 {
  color: var(--text);
  font-size: 17px;
}

.calculator-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 25px;
  margin-top: 20px;
}

.calculator-box label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
}

.calculator-box input {
  width: 100%;
  padding: 10px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  margin-bottom: 15px;
}

.calculator-box input:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,87,255,0.15);
}

.calculator-box button {
  width: 100%;
  padding: 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-control);
  font-size: 16px;
  cursor: pointer;
}

.calculator-box button:hover {
  background: #0044cc;
}

.calculator-box button:focus-visible {
  outline: 3px solid rgba(0,87,255,0.35);
  outline-offset: 2px;
}

#result {
  margin-top: 20px;
  padding: 15px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  display: none;
}

#result p {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
}

#result p:last-child {
  margin-top: 6px;
  padding-top: 12px;
  border-top: 2px solid var(--border);
  font-size: 18px;
  font-weight: bold;
  color: var(--success);
}

footer {
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  font-size: 14px;
}

footer .footer-links {
  margin-bottom: 10px;
}

footer a {
  color: var(--accent);
  text-decoration: none;
  margin: 0 6px;
}

footer a:hover {
  text-decoration: underline;
}

/* --- Homepage additions (Step 2) --- */

.hero {
  text-align: center;
  padding: 10px 0 20px;
}

.hero p {
  color: var(--text-muted);
  margin-top: 10px;
  font-size: 16px;
}

.hero-badge {
  display: inline-block;
  margin-top: 14px;
  padding: 6px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
}

.quick-facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 15px;
}

.fact-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 16px;
  text-align: center;
}

.fact-value {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
}

.fact-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.steps {
  margin: 15px 0 15px 20px;
}

.steps li {
  margin-bottom: 8px;
}

.trust-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px;
}

.faq-accordion {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  padding: 14px 16px;
  margin-bottom: 10px;
}

.faq-accordion summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-accordion p {
  margin-top: 10px;
  color: var(--text-muted);
}

.related-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 20px;
}

.footer-columns {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  text-align: left;
  margin-bottom: 16px;
}

.footer-col strong {
  display: block;
  color: var(--primary);
  margin-bottom: 8px;
  font-size: 14px;
}

.footer-col a {
  display: block;
  margin: 0 0 6px 0;
}

@media (max-width: 480px) {
  .quick-facts {
    grid-template-columns: 1fr;
  }
  .footer-columns {
    justify-content: flex-start;
    gap: 24px;
  }
}