:root {
  --bg: #f6f7f5;
  --surface: #ffffff;
  --text: #14201a;
  --muted: #5e6b62;
  --primary: #2f9e44;
  --border: #e3e6e0;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

a {
  color: inherit;
}

.shell {
  width: min(640px, 90vw);
  margin: 0 auto;
  padding: 3rem 0 4rem;
}

header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  width: min(640px, 90vw);
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
}

.logo {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 0.35rem;
  background: var(--primary);
}

.lang-switch {
  display: flex;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.lang-switch a {
  text-decoration: none;
  color: var(--muted);
  padding: 0.25rem 0.5rem;
  border-radius: 0.35rem;
}

.lang-switch a[aria-current="page"] {
  color: var(--primary);
  background: #e6f4e9;
  font-weight: 600;
}

main {
  text-align: center;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.lead {
  margin: 0 auto;
  max-width: 36ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.card {
  margin-top: 2.5rem;
  padding: 2rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.badge {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary);
  background: #e6f4e9;
  border-radius: 999px;
}