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

:root {
  --bg: #ffffff;
  --text-primary: #1a1a1a;
  --text-secondary: #6e6e73;
  --accent: #c8861a;
  --accent-bg: #fef3e2;
  --border: #d1d1d6;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
}

html { font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
}

.nav-logo {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-primary);
}

.lang-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.25rem 0.625rem;
  font-size: 0.8125rem;
  font-family: var(--font);
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.lang-toggle:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem 3rem;
  gap: 3.5rem;
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
}

.app-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.04);
  margin-bottom: 0.25rem;
}

.app-name {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  line-height: 1.15;
}

.tagline {
  font-size: clamp(1rem, 3vw, 1.1875rem);
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: -0.01em;
}

.badge {
  display: inline-block;
  margin-top: 0.25rem;
  background: var(--accent-bg);
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.375rem 1rem;
  border-radius: 999px;
}

.features {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1rem;
  color: var(--text-secondary);
}

.check {
  color: var(--accent);
  font-size: 0.9375rem;
  font-weight: 700;
  flex-shrink: 0;
  width: 1rem;
  text-align: center;
}

footer {
  text-align: center;
  padding: 1.5rem 2rem;
  font-size: 0.8125rem;
  color: #aeaeb2;
}

@media (max-width: 480px) {
  nav   { padding: 1.25rem 1.25rem; }
  main  { padding: 2.5rem 1.25rem 2rem; gap: 2.5rem; }
}