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

body {
  font-family: Georgia, 'Times New Roman', serif;
  background-color: #f5f0e8;
  color: #2c2c2c;
  line-height: 1.7;
}

header {
  background-color: #3a5a40;
  color: #f5f0e8;
  padding: 20px 0;
  border-bottom: 4px solid #2d4a33;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.6rem;
  font-weight: bold;
  letter-spacing: 1px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 24px;
}

nav a {
  color: #d4e4d0;
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

nav a:hover,
nav a.active {
  color: #ffffff;
  text-decoration: underline;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

main {
  padding: 40px 0 60px;
}

h1 {
  font-size: 2rem;
  color: #3a5a40;
  margin-bottom: 20px;
}

h2 {
  font-size: 1.4rem;
  color: #4a7c59;
  margin-top: 32px;
  margin-bottom: 12px;
}

h3 {
  font-size: 1.15rem;
  color: #3a5a40;
  margin-top: 24px;
  margin-bottom: 8px;
}

p {
  margin-bottom: 16px;
  text-align: justify;
}

ul, ol {
  margin: 12px 0 20px 28px;
}

li {
  margin-bottom: 6px;
}

.hero {
  text-align: center;
  padding: 50px 0 30px;
}

.hero h1 {
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.hero p {
  font-size: 1.1rem;
  text-align: center;
  color: #555;
  max-width: 640px;
  margin: 0 auto 30px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.card {
  background: #fff;
  border: 1px solid #d5cfc3;
  border-radius: 8px;
  padding: 24px;
  transition: box-shadow 0.2s;
}

.card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.card h3 {
  margin-top: 0;
  color: #3a5a40;
}

.card a {
  color: #3a5a40;
  text-decoration: none;
  font-weight: bold;
}

.card a:hover {
  text-decoration: underline;
}

.plant-section {
  background: #fff;
  border: 1px solid #d5cfc3;
  border-radius: 8px;
  padding: 28px;
  margin-bottom: 28px;
}

.plant-section h2 {
  margin-top: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

th, td {
  border: 1px solid #d5cfc3;
  padding: 10px 14px;
  text-align: left;
}

th {
  background-color: #3a5a40;
  color: #f5f0e8;
}

tr:nth-child(even) {
  background-color: #f0ebe0;
}

footer {
  background-color: #3a5a40;
  color: #c8d8c4;
  text-align: center;
  padding: 20px 0;
  font-size: 0.85rem;
}

footer a {
  color: #e0ead8;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

.tip {
  background-color: #e8f0e4;
  border-left: 4px solid #4a7c59;
  padding: 16px 20px;
  margin: 20px 0;
  border-radius: 0 6px 6px 0;
}

.tip strong {
  color: #3a5a40;
}

@media (max-width: 600px) {
  header .container {
    flex-direction: column;
    gap: 12px;
  }

  nav ul {
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
  }

  .hero h1 {
    font-size: 1.7rem;
  }

  h1 {
    font-size: 1.5rem;
  }
}