:root {
  --primary: #0f766e;
  --primary-dark: #115e59;
  --bg-color: #f8fafc;
  --surface: #ffffff;
  --text-main: #0f172a;
  --text-muted: #475569;
  --border: #cbd5e1;
  --radius: 8px;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

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

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

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

/* Header */
.site-header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--primary);
  font-size: 1.25rem;
}

nav a {
  color: var(--text-main);
  text-decoration: none;
  margin-left: 1rem;
  font-weight: 500;
  transition: color 0.2s;
}

nav a:hover {
  color: var(--primary);
}

/* Hero */
.hero-section {
  padding: 3rem 0 2rem;
  text-align: center;
}

.hero-section h1 {
  font-size: 2.25rem;
  margin-bottom: 1rem;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.lead-text {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 800px;
  margin: 0 auto;
}

/* Tool Section */
.tool-section {
  margin-bottom: 4rem;
}

.comparator-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .comparator-grid {
    grid-template-columns: 1fr;
  }
}

.offer-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.offer-card h2 {
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--bg-color);
}

fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
  background: #fdfdfd;
}

legend {
  font-weight: 600;
  color: var(--primary-dark);
  padding: 0 0.5rem;
}

.form-group {
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
  color: var(--text-muted);
}

.form-group input {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 1rem;
  font-family: inherit;
}

.form-group input:focus {
  outline: 2px solid var(--primary);
  outline-offset: -1px;
  border-color: var(--primary);
}

.result-box {
  background: var(--bg-color);
  padding: 1.5rem;
  border-radius: var(--radius);
  text-align: center;
  margin-top: 1.5rem;
  border: 1px solid #e2e8f0;
}

.result-box h3 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.effective-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
}

.winner .result-box {
  background: #ecfdf5;
  border-color: #34d399;
}

.winner .effective-value {
  color: #059669;
}

/* Guides */
.guide-section {
  margin-bottom: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.guide-section h2 {
  margin-bottom: 2rem;
  text-align: center;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.guide-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--primary-dark);
}

.guide-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 4rem;
  text-align: center;
  color: var(--text-muted);
}

.footer-nav {
  margin-top: 1rem;
}

.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
  margin: 0 0.5rem;
  font-size: 0.875rem;
}

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



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}