:root {
  color-scheme: light;
  --ink: #121713;
  --muted: #5e6861;
  --line: #dfe7e1;
  --surface: #f5f8f5;
  --accent: #baff5a;
  --accent-strong: #83cf20;
  --dark: #0a0f0c;
  --max-width: 860px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

a {
  color: #387800;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #255200;
}

.site-header {
  background:
    radial-gradient(circle at 78% 12%, rgb(186 255 90 / 16%), transparent 34%),
    var(--dark);
  color: #fff;
}

.site-nav,
.hero,
.content,
.site-footer-inner {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--accent);
  color: #101610;
  font-size: 17px;
  font-weight: 900;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
}

.nav-links a {
  color: #dce6df;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

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

.hero {
  padding: 58px 0 64px;
}

.hero.compact {
  padding: 44px 0 48px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.28;
  letter-spacing: -0.025em;
}

h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(34px, 7vw, 54px);
}

.hero p {
  max-width: 690px;
  margin: 18px 0 0;
  color: #cbd5ce;
  font-size: 18px;
}

.content {
  padding: 48px 0 72px;
}

.content > :first-child {
  margin-top: 0;
}

.content h2 {
  margin: 48px 0 14px;
  font-size: 26px;
}

.content h3 {
  margin: 30px 0 8px;
  font-size: 20px;
}

.content p,
.content ul,
.content ol {
  max-width: 780px;
}

.content li + li {
  margin-top: 7px;
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

.notice {
  margin: 28px 0;
  padding: 18px 20px;
  border: 1px solid #cce5ae;
  border-radius: 14px;
  background: #f5ffe9;
}

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

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 32px;
}

.card {
  display: block;
  min-height: 180px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-strong);
  color: var(--ink);
}

.card-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: 12px;
  background: var(--accent);
  font-weight: 900;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin: 10px 0;
  padding: 0 20px;
  border-radius: 14px;
  background: var(--dark);
  color: #fff;
  font-weight: 750;
  text-decoration: none;
}

.button:hover {
  background: #1f2a22;
  color: var(--accent);
}

.checklist {
  padding-left: 0;
  list-style: none;
}

.checklist li {
  position: relative;
  padding-left: 28px;
}

.checklist li::before {
  position: absolute;
  left: 0;
  content: "✓";
  color: #4e9700;
  font-weight: 900;
}

.language-divider {
  margin: 64px 0 52px;
  border: 0;
  border-top: 1px solid var(--line);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 26px 0;
  color: var(--muted);
  font-size: 14px;
}

.site-footer a {
  color: var(--ink);
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .site-nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

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

  .hero {
    padding: 40px 0 48px;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .site-footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .card {
    transition: none;
  }
}