* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: #111827;
  background: linear-gradient(180deg, #eff6ff 0%, #f9fafb 40%, #ffffff 100%);
  min-height: 100dvh;
}

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

.landing-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
}

.landing-header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.landing-link {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
}

.lang-switch {
  display: inline-flex;
  gap: 4px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 2px;
  background: #fff;
}

.lang-btn {
  border: none;
  background: transparent;
  color: #6b7280;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  line-height: 1;
}

.lang-btn:hover {
  color: #111827;
  background: #f3f4f6;
}

.lang-btn.active {
  background: #2563eb;
  color: #fff;
}

.landing-main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
}

.landing-hero {
  text-align: center;
  padding: 48px 0 56px;
}

.landing-kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  font-weight: 700;
  color: #2563eb;
  margin: 0 0 12px;
}

.landing-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
}

.landing-lead {
  margin: 0 auto 28px;
  max-width: 640px;
  font-size: 18px;
  line-height: 1.6;
  color: #4b5563;
}

.landing-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary {
  background: #2563eb;
  color: white;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.25);
}

.btn-secondary {
  background: white;
  color: #2563eb;
  border: 2px solid #2563eb;
}

.btn-primary:hover,
.btn-secondary:hover {
  transform: translateY(-1px);
}

.landing-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  padding-bottom: 48px;
}

.landing-features article {
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.landing-features h2 {
  margin: 0 0 8px;
  font-size: 17px;
}

.landing-features p {
  margin: 0;
  color: #6b7280;
  font-size: 14px;
  line-height: 1.5;
}

.landing-footer {
  text-align: center;
  padding: 24px;
  color: #9ca3af;
  font-size: 13px;
}

.landing-legal {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 8px;
}

.landing-legal a {
  color: #6b7280;
}

@media (max-width: 599px) {
  .landing-header {
    padding: 12px 16px;
  }

  .landing-main {
    padding: 16px;
  }

  .landing-hero {
    padding: 24px 0 32px;
  }

  .landing-lead {
    font-size: 16px;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    text-align: center;
  }
}