:root {
  --green: #2E7D32;
  --green-light: #4CAF50;
  --green-bg: #E8F5E9;
  --text: #1B1B1B;
  --secondary: #6B6B6B;
  --border: #E0E0E0;
  --bg: #FAFAFA;
  --card: #FFFFFF;
}

@media (prefers-color-scheme: dark) {
  :root {
    --green: #81C784;
    --green-light: #66BB6A;
    --green-bg: #1B3A22;
    --text: #FAFAFA;
    --secondary: #BDBDBD;
    --border: #333333;
    --bg: #121212;
    --card: #1E1E1E;
  }
}

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

html {
  scroll-behavior: smooth;
}

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

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

a:hover {
  text-decoration: underline;
}

header {
  border-bottom: 1px solid var(--border);
  background: var(--card);
  position: sticky;
  top: 0;
  z-index: 10;
}

header .inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.brand-icon {
  width: 32px;
  height: 32px;
  display: block;
}

nav {
  display: flex;
  gap: 24px;
}

nav a {
  color: var(--secondary);
  font-size: 15px;
  font-weight: 500;
}

nav a:hover {
  color: var(--green);
  text-decoration: none;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.hero {
  text-align: center;
  padding: 64px 0 48px;
}

.hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero .tagline {
  font-size: 20px;
  color: var(--secondary);
  max-width: 560px;
  margin: 0 auto 32px;
}

.cta {
  display: inline-block;
  background: var(--green);
  color: #fff;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 16px;
}

.cta:hover {
  background: var(--green-light);
  text-decoration: none;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 48px;
}

.feature {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
}

.feature .icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.feature h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature p {
  font-size: 14px;
  color: var(--secondary);
}

.legal h1 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 8px;
}

.legal .updated {
  color: var(--secondary);
  font-size: 14px;
  margin-bottom: 32px;
}

.legal h2 {
  font-size: 22px;
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 8px;
}

.legal h3 {
  font-size: 17px;
  font-weight: 700;
  margin-top: 20px;
  margin-bottom: 6px;
}

.legal p,
.legal ul {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 12px;
}

.legal ul {
  padding-left: 24px;
}

.legal li {
  margin-bottom: 6px;
}

.legal strong {
  font-weight: 600;
}

footer {
  border-top: 1px solid var(--border);
  margin-top: 64px;
}

footer .inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  color: var(--secondary);
}

footer nav {
  gap: 16px;
}

@media (max-width: 640px) {
  header .inner {
    padding: 12px 16px;
  }

  nav {
    gap: 16px;
  }

  nav a {
    font-size: 14px;
  }

  main {
    padding: 32px 16px 64px;
  }

  .hero {
    padding: 32px 0;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero .tagline {
    font-size: 17px;
  }

  footer .inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}