:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.5;
  --color-primary-50: 234 221 226;
  --color-primary-100: 220 198 206;
  --color-primary-200: 198 165 177;
  --color-primary-300: 177 131 148;
  --color-primary-400: 148 86 109;
  --color-primary-500: 113 29 60;
  --color-primary-600: 96 25 51;
  --color-primary-900: 45 12 24;
  --color-secondary-50: 229 227 251;
  --color-secondary-400: 132 126 237;
  --color-secondary-500: 79 70 229;
  --color-secondary-700: 59 53 172;
  --color-tertiary-50: 219 242 252;
  --color-tertiary-400: 86 192 240;
  --color-tertiary-500: 14 165 233;
  --color-surface-50: 228 230 238;
  --color-surface-100: 219 222 233;
  --color-surface-400: 128 140 177;
  --color-surface-500: 73 90 143;
  --color-surface-900: 36 44 70;
  --color-base: 0 0 0;
  --color-on-dark: 255 255 255;
  color: rgb(var(--color-base));
}

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

body {
  min-height: 100vh;
  background: linear-gradient(
      140deg,
      rgb(var(--color-tertiary-50) / 0.9),
      rgb(var(--color-secondary-50) / 0.9)
    ),
    rgb(var(--color-surface-50));
  color: rgb(var(--color-base));
  padding: 3rem clamp(1.5rem, 8vw, 5rem);
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  gap: 1rem;
}

.site-header__brand {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgb(var(--color-primary-600));
  text-decoration: none;
}

.lang-switch {
  display: inline-flex;
  gap: 0.4rem;
}

.lang-switch a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  color: rgb(var(--color-secondary-500));
  border: 1px solid transparent;
  transition: background 120ms ease, color 120ms ease;
}

.lang-switch a:hover {
  border-color: rgb(var(--color-secondary-500) / 0.4);
  color: rgb(var(--color-secondary-500));
}

.lang-switch a[aria-current='true'] {
  background: rgb(var(--color-secondary-500));
  color: rgb(var(--color-on-dark));
  border-color: rgb(var(--color-secondary-500));
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3rem;
  margin-bottom: 4rem;
}

.hero__content {
  background: rgb(var(--color-on-dark) / 0.85);
  border-radius: 1.5rem;
  padding: 2rem;
  border: 1px solid rgb(var(--color-primary-100) / 0.7);
  backdrop-filter: blur(12px);
  color: rgb(var(--color-base));
}

.hero__stats article {
  background: rgb(var(--color-surface-900) / 0.95);
  color: rgb(var(--color-on-dark));
  border-radius: 1rem;
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 25px 60px rgb(var(--color-surface-900) / 0.35);
  margin-bottom: 1.5rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.35em;
  font-size: 0.78rem;
  color: rgb(var(--color-surface-500));
  margin-bottom: 0.5rem;
}

h1 {
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  color: rgb(var(--color-primary-500));
  margin-bottom: 1rem;
}

.lead {
  font-size: 1rem;
  color: rgb(var(--color-base) / 0.9);
  margin-bottom: 1.5rem;
}

.lead--stack {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.button {
  background: linear-gradient(
    120deg,
    rgb(var(--color-primary-500)),
    rgb(var(--color-secondary-400))
  );
  color: rgb(var(--color-on-dark));
  border-radius: 999px;
  padding: 0.9rem 1.75rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  box-shadow: 0 20px 45px rgba(113, 29, 60, 0.35);
  transition: transform 150ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.link {
  text-decoration: none;
  font-weight: 600;
  color: rgb(var(--color-secondary-500));
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

main {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.section {
  background: rgba(255, 255, 255, 0.94);
  border-radius: 1.75rem;
  padding: 2.5rem;
  border: 1px solid rgb(var(--color-surface-100) / 1);
  box-shadow: 0 25px 50px rgb(var(--color-surface-500) / 0.2);
}

.section--panel {
  background: linear-gradient(
    135deg,
    rgb(var(--color-primary-50) / 0.9),
    rgb(var(--color-tertiary-50) / 0.9)
  );
}

.section__header {
  max-width: 640px;
  margin-bottom: 2rem;
}

.section__header h2 {
  color: rgb(var(--color-surface-900));
  margin-bottom: 0.75rem;
}

.section__header p {
  color: rgb(var(--color-surface-400));
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.grid--languages {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.language-card {
  background: linear-gradient(
    140deg,
    rgb(var(--color-primary-300) / 0.2),
    rgb(var(--color-secondary-50) / 0.9)
  );
  border-radius: 1.25rem;
  padding: 1.5rem;
  border: 1px solid rgb(var(--color-primary-100));
  text-decoration: none;
  color: rgb(var(--color-base));
  font-weight: 600;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  box-shadow: 0 15px 30px rgb(var(--color-secondary-700) / 0.12);
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.language-card span {
  font-size: 0.9rem;
  color: rgb(var(--color-surface-400));
  font-weight: 400;
}

.language-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgb(var(--color-secondary-700) / 0.2);
}

.grid article {
  border-radius: 1.25rem;
  padding: 1.4rem;
  border: 1px solid rgb(var(--color-primary-100) / 1);
  background: #fff;
  color: rgb(var(--color-base));
  box-shadow: 0 12px 30px rgb(var(--color-primary-400) / 0.25);
}

.grid article h3 {
  margin-bottom: 0.6rem;
  color: rgb(var(--color-primary-500));
}

.grid article p {
  color: rgb(var(--color-base) / 0.9);
}

.footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgb(var(--color-surface-500) / 0.3);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  color: rgb(var(--color-surface-500));
}

.footer a {
  color: rgb(var(--color-primary-500));
  text-decoration: none;
}

@media (max-width: 600px) {
  body {
    padding: 2rem 1.25rem;
  }

  .hero__content,
  .section {
    padding: 1.75rem;
  }
}