:root {
  color-scheme: light;
  --bg: #f8faf7;
  --surface: #ffffff;
  --text: #1d2520;
  --muted: #5f6b63;
  --line: #dce4dc;
  --accent: #246b55;
  --accent-strong: #164737;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

body[data-lang="pl"] [data-lang-content="en"],
body[data-lang="en"] [data-lang-content="pl"] {
  display: none;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.page {
  width: min(100%, 1040px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 28px 24px 56px;
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 44px;
}

.nav-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
}

.brand {
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px 18px;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--accent-strong);
}

.language-switcher {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
}

.language-switcher button {
  min-width: 38px;
  min-height: 30px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
}

.language-switcher button[aria-pressed="true"] {
  background: var(--accent);
  color: #ffffff;
}

.intro {
  max-width: 760px;
  padding: 54px 0 0;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.16;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: 4.25rem;
  font-weight: 760;
}

.intro p:not(.eyebrow) {
  max-width: 700px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.15rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--accent-strong);
}

.section {
  margin-top: 74px;
}

.section > h2,
.section [data-lang-content] > h2 {
  max-width: 620px;
  margin: 0 0 22px;
  font-size: 2.5rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature {
  min-height: 238px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  background: #e6f0ea;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
}

.feature h3 {
  margin: 22px 0 10px;
  font-size: 1.08rem;
}

.feature p,
.split-section p,
.principles-list p {
  margin: 0;
  color: var(--muted);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 42px;
  align-items: start;
  padding: 36px 0 8px;
  border-top: 1px solid var(--line);
}

.split-section h2 {
  margin: 0 0 16px;
  font-size: 2.5rem;
}

.principles-list {
  display: grid;
  gap: 16px;
}

.principles-list div {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.principles-list strong {
  display: block;
  margin-bottom: 4px;
}

.content-page {
  max-width: 820px;
}

.document {
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.document h1 {
  font-size: 3rem;
}

.document h2 {
  margin: 34px 0 8px;
  font-size: 1.25rem;
}

.document p {
  margin: 0 0 16px;
  color: var(--muted);
}

.document .updated {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 640px) {
  .page {
    padding: 22px 18px 44px;
  }

  .top-nav {
    align-items: flex-start;
    flex-direction: column;
    padding-bottom: 28px;
  }

  .nav-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .intro {
    padding-top: 42px;
  }

  h1 {
    font-size: 2.35rem;
  }

  .section > h2,
  .section [data-lang-content] > h2,
  .split-section h2,
  .document h1 {
    font-size: 2rem;
  }

  .document {
    padding: 26px 20px;
  }
}

@media (max-width: 900px) {
  .feature-grid,
  .split-section {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .feature-grid,
  .split-section {
    grid-template-columns: 1fr;
  }
}