*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, sans-serif;
  color: #0F1923;
  background: #FFFFFF;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: #00D09C; text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* Header / Nav */
header {
  border-bottom: 1px solid #EEF0F2;
  position: sticky; top: 0; background: #FFFFFF; z-index: 10;
}
nav { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
.logo { font-size: 22px; font-weight: 800; color: #0F1923; letter-spacing: -0.5px; }
.logo span { color: #00D09C; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { color: #6B7280; font-weight: 500; font-size: 15px; }
.nav-links a:hover { color: #0F1923; text-decoration: none; }

/* Hero */
.hero { padding: 96px 0 72px; text-align: center; }
.hero h1 { font-size: 48px; font-weight: 800; line-height: 1.15; margin: 0 0 20px; letter-spacing: -1px; }
.hero h1 span { color: #00D09C; }
.hero p { font-size: 19px; color: #6B7280; max-width: 640px; margin: 0 auto 32px; }
.cta { display: inline-block; background: #00D09C; color: #FFFFFF; padding: 14px 28px; border-radius: 10px; font-weight: 600; font-size: 16px; }
.cta:hover { background: #00B886; text-decoration: none; }
.cta-secondary { margin-left: 12px; background: transparent; color: #0F1923; border: 1.5px solid #E5E7EB; }

/* Feature grid */
.features { padding: 80px 0; background: #F8FAFB; }
.features h2 { font-size: 34px; font-weight: 700; text-align: center; margin: 0 0 12px; letter-spacing: -0.5px; }
.section-sub { text-align: center; color: #6B7280; margin: 0 0 48px; font-size: 17px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.card { background: #FFFFFF; border: 1px solid #EEF0F2; border-radius: 14px; padding: 28px; }
.card-icon { width: 44px; height: 44px; border-radius: 10px; background: #E6FBF5; color: #00D09C; display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 700; margin-bottom: 16px; }
.card h3 { margin: 0 0 8px; font-size: 18px; font-weight: 700; }
.card p { margin: 0; color: #6B7280; font-size: 15px; }

/* About */
.about { padding: 88px 0; }
.about h2 { font-size: 32px; font-weight: 700; margin: 0 0 16px; letter-spacing: -0.5px; }
.about p { color: #4B5563; font-size: 16px; max-width: 720px; }

/* Footer */
footer { border-top: 1px solid #EEF0F2; padding: 48px 0 32px; background: #FBFCFD; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-grid h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: #9CA3AF; margin: 0 0 14px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid ul li { margin-bottom: 10px; }
.footer-grid ul a { color: #4B5563; font-size: 14px; }
.footer-grid ul a:hover { color: #00D09C; }
.footer-brand p { color: #6B7280; font-size: 14px; margin: 12px 0 0; max-width: 280px; }
.copyright { text-align: center; padding-top: 24px; border-top: 1px solid #EEF0F2; color: #9CA3AF; font-size: 13px; }

/* Legal pages */
.legal { padding: 72px 0; }
.legal h1 { font-size: 38px; margin: 0 0 8px; letter-spacing: -0.5px; }
.legal .updated { color: #9CA3AF; margin: 0 0 40px; font-size: 14px; }
.legal h2 { font-size: 22px; margin: 36px 0 12px; }
.legal p, .legal li { color: #374151; font-size: 16px; }
.legal ul { padding-left: 22px; }
.legal a { color: #00D09C; }

/* Responsive */
@media (max-width: 700px) {
  .hero { padding: 60px 0 40px; }
  .hero h1 { font-size: 34px; }
  .hero p { font-size: 16px; }
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 14px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .features, .about { padding: 56px 0; }
  .features h2, .about h2 { font-size: 26px; }
}