:root {
  --color-primary: #4f46e5;
  --color-primary-hover: #4338ca;
  --color-primary-light: #eef2ff;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #111827;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-dark: #0b1221;
  --color-dark-surface: #1e293b;
  --radius: 0.75rem;
  --shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 60px -15px rgba(0, 0, 0, 0.15);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Navigation ── */
.landing-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.landing-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.875rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.125rem;
}

.nav-brand svg {
  color: var(--color-primary);
}

.nav-brand-logo {
  height: 28px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.15s;
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-lang {
  position: relative;
}

.nav-lang select {
  appearance: none;
  padding: 0.375rem 1.75rem 0.375rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 0.375rem;
  font-size: 0.8125rem;
  color: var(--color-text);
  background: var(--color-surface);
  cursor: pointer;
}

.nav-lang::after {
  content: '';
  position: absolute;
  right: 0.625rem;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid var(--color-muted);
  pointer-events: none;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

/* ── Hero ── */
.hero {
  padding: 10rem 1.5rem 5rem;
  text-align: center;
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  max-width: 720px;
  margin: 0 auto 1.25rem;
  letter-spacing: -0.02em;
}

.hero h1 .highlight {
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ── Features ── */
.section {
  padding: 5rem 1.5rem;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: 560px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: 0.625rem;
  margin-bottom: 1.25rem;
  color: var(--color-primary);
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ── How it works ── */
.how-it-works {
  background: var(--color-dark);
  color: #ffffff;
}

.how-it-works .section-header h2 {
  color: #ffffff;
}

.how-it-works .section-header p {
  color: #94a3b8;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.step-card {
  text-align: center;
  padding: 2rem 1.5rem;
}

.step-number {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #ffffff;
  border-radius: 50%;
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 auto 1.25rem;
}

.step-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #ffffff;
}

.step-card p {
  font-size: 0.9375rem;
  color: #94a3b8;
  line-height: 1.6;
}

/* ── CTA ── */
.cta-section {
  text-align: center;
  padding: 5rem 1.5rem;
}

.cta-section h2 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.cta-section p {
  font-size: 1.125rem;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

/* ── Footer ── */
.landing-footer {
  background: var(--color-dark);
  color: #94a3b8;
  padding: 3rem 1.5rem 2rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.125rem;
  text-decoration: none;
}

.footer-brand svg {
  color: var(--color-primary);
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-dark-surface);
  font-size: 0.8125rem;
  text-align: center;
}

/* ── Legal pages ── */
.legal-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 8rem 1.5rem 4rem;
}

.legal-page h1 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.legal-page .legal-updated {
  color: var(--color-muted);
  font-size: 0.875rem;
  margin-bottom: 2.5rem;
}

.legal-page h2 {
  font-size: 1.375rem;
  font-weight: 600;
  margin: 2rem 0 0.75rem;
}

.legal-page p {
  color: var(--color-muted);
  margin-bottom: 1rem;
  line-height: 1.7;
}

.legal-page ul {
  color: var(--color-muted);
  margin: 0 0 1rem 1.5rem;
  line-height: 1.7;
}

.legal-page li {
  margin-bottom: 0.375rem;
}

/* ── Hero platforms ── */
.hero-platforms {
  margin-top: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.hero-platforms-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: 0.5rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.875rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text);
}

/* ── Capabilities ── */
.capabilities {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.capability-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 1rem 1.25rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
}

.capability-check {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 50%;
}

/* ── Integrations ── */
.integrations-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  max-width: 720px;
  margin: 0 auto;
}

.integration-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.625rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.integration-chip:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero {
    padding: 7rem 1rem 3rem;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .features-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-platforms-label {
    width: 100%;
    text-align: center;
    margin-right: 0;
    margin-bottom: 0.25rem;
  }

  .nav-links {
    display: none;
  }

  .section-header h2 {
    font-size: 1.75rem;
  }

  .cta-section h2 {
    font-size: 1.75rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-links {
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
  }
}