:root {
  color-scheme: light dark;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bg: #f7f8fb;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: #ffffff;
  --text: #111827;
  --muted: rgba(15, 23, 42, 0.72);
  --border: rgba(15, 23, 42, 0.12);
  --border-strong: rgba(15, 23, 42, 0.06);
  --shadow: rgba(15, 23, 42, 0.08);
  --header-footer: rgba(255, 255, 255, 0.92);
  --footer-border: rgba(15, 23, 42, 0.08);
  --button-bg: #4338ca;
  --button-text: #ffffff;
  --link: #0f172a;
  --link-hover: #4338ca;
  background: var(--bg);
  color: var(--text);
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100vh;
  padding: 0 1.5rem 5rem;
  line-height: 1.6;
  background: linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
}
.site-header,
.site-footer {
  width: 100%;
  left: 0;
  right: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}
.site-header {
  position: sticky;
  top: 0;
}
.site-footer {
  position: fixed;
  bottom: 0;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  padding: 0.9rem 1.5rem;
}
.site-header__inner,
.page-content,
.site-footer > div {
  max-width: 1024px;
  margin: 0 auto;
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}
.brand {
  font-weight: 700;
  font-size: 1.1rem;
}
.nav-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.nav-links a,
.site-footer a,
.button,
.footer-button {
  color: #0f172a;
  text-decoration: none;
}
.nav-links a:hover,
.site-footer a:hover,
.button:hover,
.footer-button:hover {
  color: #4338ca;
}
.footer-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border: 1px solid rgba(15, 23, 42, 0.16);
  border-radius: 999px;
  background: transparent;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.footer-button svg {
  display: block;
  width: 16px;
  height: 16px;
}
.footer-button:hover {
  background: rgba(67, 56, 202, 0.08);
  border-color: rgba(67, 56, 202, 0.32);
}
.page-content {
  padding: 2.5rem 0 8rem;
}
.hero {
  max-width: 760px;
  margin: 0 auto 2rem;
  padding: 2rem;
  border-radius: 1.5rem;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
}
.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.04em;
}
.cards {
  display: grid;
  gap: 1rem;
}
.card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.75rem;
  border-radius: 1.2rem;
  background: white;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.04);
}
.card-copy {
  flex: 1;
}
.card h2 {
  margin: 0 0 0.75rem;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  background: #4338ca;
  color: white;
  font-weight: 600;
  min-width: 10rem;
}
.site-footer {
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}
.site-footer > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.95rem;
}
@media (max-width: 640px) {
  .site-header__inner,
  .site-footer > div {
    flex-direction: column;
    align-items: flex-start;
  }
  body {
    padding-bottom: 7rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #070b17;
    --surface: rgba(15, 23, 42, 0.92);
    --surface-strong: #0f172a;
    --text: #e2e8f0;
    --muted: rgba(226, 232, 240, 0.72);
    --border: rgba(148, 163, 184, 0.18);
    --border-strong: rgba(148, 163, 184, 0.08);
    --shadow: rgba(0, 0, 0, 0.35);
    --header-footer: rgba(15, 23, 42, 0.88);
    --footer-border: rgba(148, 163, 184, 0.18);
    --button-bg: #6366f1;
    --button-text: #ffffff;
    --link: #e2e8f0;
    --link-hover: #a5b4fc;
    background: #070b17;
  }
  body {
    background: linear-gradient(180deg, #050811 0%, #0f172a 100%);
  }
  .site-header,
  .site-footer {
    background: var(--header-footer);
    border-color: rgba(148, 163, 184, 0.12);
  }
  .hero,
  .card {
    background: var(--surface);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    border-color: var(--border-strong);
  }
  .site-header,
  .site-footer {
    border-color: var(--footer-border);
  }
  .nav-links a,
  .site-footer a,
  .button,
  .footer-button {
    color: var(--link);
  }
  .nav-links a:hover,
  .site-footer a:hover,
  .button:hover,
  .footer-button:hover {
    color: var(--link-hover);
  }
  .card {
    border-color: var(--border);
  }
}