:root {
  --brand-primary: #0288d1;
  --brand-primary-dark: #0277bd;
  --brand-primary-soft: #e1f5fe;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text-primary: #101828;
  --text-secondary: #475467;
  --border: #d9dee7;
  --success: #2e7d32;
  --max-width: 1080px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg);
}

a {
  color: var(--brand-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--text-secondary);
  font-weight: 500;
}

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

/* Hero */

.hero {
  padding: 4.5rem 0 3.5rem;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  margin-bottom: 1.25rem;
  border-radius: 999px;
  background: var(--brand-primary-soft);
  color: var(--brand-primary-dark);
  font-size: 0.85rem;
  font-weight: 600;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 0 auto 2rem;
  max-width: 42rem;
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.35rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: background 0.15s, transform 0.15s;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--brand-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-primary-dark);
  color: #fff;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

/* Sections */

section {
  padding: 3.5rem 0;
}

.section-title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}

.section-subtitle {
  margin: 0 0 2.5rem;
  color: var(--text-secondary);
  max-width: 40rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

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

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 0.85rem;
  border-radius: 10px;
  background: var(--brand-primary-soft);
  color: var(--brand-primary);
  font-size: 1.25rem;
}

/* Data transparency */

.data-section {
  background: var(--surface);
  border-block: 1px solid var(--border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.data-table th,
.data-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.data-table th {
  background: var(--bg);
  font-weight: 600;
  width: 28%;
}

.data-table td {
  color: var(--text-secondary);
}

.data-note {
  margin-top: 1.25rem;
  padding: 1rem 1.15rem;
  border-radius: 10px;
  background: var(--brand-primary-soft);
  color: var(--brand-primary-dark);
  font-size: 0.95rem;
}

/* How it works */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 1.25rem 1.25rem 1.25rem 3.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 1.15rem;
  top: 1.15rem;
  width: 1.75rem;
  height: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--brand-primary);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
}

.step h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.step p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* Privacy page */

.page-hero {
  padding: 2.5rem 0 1.5rem;
}

.page-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.page-meta {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.legal-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2rem;
  margin-bottom: 3rem;
}

.legal-content h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.2rem;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p,
.legal-content li {
  color: var(--text-secondary);
}

.legal-content ul {
  padding-left: 1.25rem;
}

.legal-content li {
  margin-bottom: 0.35rem;
}

/* Footer */

.site-footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-brand {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.9rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-weight: 500;
}

.footer-links a:hover {
  color: var(--brand-primary);
}

/* Responsive */

@media (max-width: 640px) {
  .site-nav {
    gap: 0.85rem;
    font-size: 0.85rem;
  }

  .hero {
    padding: 3rem 0 2.5rem;
  }

  .data-table th {
    width: 35%;
  }

  .legal-content {
    padding: 1.25rem;
  }
}