:root {
  --bg: #f8f9f4;
  --surface: #ffffff;
  --text: #2f3437;
  --muted: #58585a;
  --brand: #a3c939;
  --brand-dark: #596a27;
  --line: #d7ddc8;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f0f3e7 0%, #ffffff 420px, #f7f8f3 100%);
  line-height: 1.6;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { width: min(1080px, 92%); margin: 0 auto; }

header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
  z-index: 20;
}

.nav {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
}

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

.brand {
  font-weight: 700;
  color: var(--brand-dark);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.brand-logo {
  border-radius: 8px;
  border: 1px solid var(--line);
}

.hero {
  padding: 4rem 0 2rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.7rem, 4vw, 2.7rem);
  line-height: 1.2;
}

.hero p { color: var(--muted); max-width: 72ch; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

main section { padding: 1.4rem 0; }

h2 {
  margin: 0 0 0.5rem;
  color: var(--brand-dark);
}

ul {
  margin: 0.2rem 0 0 1.2rem;
  padding: 0;
}

li { margin: 0.25rem 0; }

details {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.65rem 0.8rem;
  background: #fff;
  margin-bottom: 0.6rem;
}

summary {
  cursor: pointer;
  font-weight: 600;
}

.cta {
  display: inline-block;
  margin-top: 0.8rem;
  padding: 0.72rem 1rem;
  border-radius: 10px;
  background: var(--brand-dark);
  color: #fff;
  font-weight: 700;
}

.cta:hover { background: #3f4d1c; text-decoration: none; }

footer {
  border-top: 1px solid var(--line);
  margin-top: 2.2rem;
  padding: 1.2rem 0 2rem;
  color: var(--muted);
}

.small { font-size: 0.95rem; }

@media (max-width: 740px) {
  .nav { align-items: flex-start; padding: 0.7rem 0; }
  .nav-links { font-size: 0.95rem; }
}