:root {
  --primary: #4CAF50;
  --primary-dark: #2E7D32;
  --text: #1a1a1a;
  --bg: #ffffff;
  --card-bg: #ffffff;
  --border-radius: 16px;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --transition: all 0.25s ease;
}

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

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Oxygen, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: #fafafa;
  padding-bottom: 2rem;
}

header {
  background: linear-gradient(120deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 3rem 1.5rem 2.5rem;
  text-align: center;
  border-bottom-left-radius: 32px;
  border-bottom-right-radius: 32px;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

header h1 {
  font-weight: 700;
  font-size: 2.8rem;
  letter-spacing: -0.5px;
}

nav {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding: 0 1rem 1.5rem;
}

nav a {
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 30px;
  transition: var(--transition);
}

nav a:hover,
nav a.active {
  background: var(--primary);
  color: white;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.hero {
  text-align: center;
  margin-bottom: 3rem;
}

.hero h2 {
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 1rem;
}

.cta-button {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 12px 32px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  margin-top: 1.5rem;
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}

.cta-button:hover {
  transform: scale(1.03);
  box-shadow: 0 6px 16px rgba(76, 175, 80, 0.4);
}

.about-section {
  max-width: 800px;
  margin: 3rem auto;
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

.about-content {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.about-content img {
  width: 100%;
  max-width: 180px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  flex: 1;
  min-width: 200px;
}

.about-text {
  flex: 2;
  min-width: 250px;
}

.about-text h2 {
  color: var(--primary-dark);
  margin-bottom: 1rem;
}

.testimonials {
  max-width: 800px;
  margin: 3rem auto;
  text-align: center;
}

.testimonial-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
  font-style: italic;
}

footer {
  text-align: center;
  color: #666;
  font-size: 0.95rem;
  margin-top: 3rem;
  padding: 0 1.5rem;
}

footer a {
  color: #666;
  text-decoration: none;
}

footer a:hover {
  color: var(--primary);
  text-decoration: underline;
}

@media (max-width: 600px) {
  header h1 { font-size: 2.2rem; }
  nav { gap: 0.8rem; }
  nav a { padding: 6px 14px; font-size: 0.95rem; }
  .about-content { flex-direction: column; align-items: center; }
  .about-content img { max-width: 150px; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f0f0f0;
    --bg: #121212;
    --card-bg: #1e1e1e;
    --shadow: 0 4px 20px rgba(0,0,0,0.3);
  }
  body {
    background-color: var(--bg);
  }
  footer a {
    color: #aaa;
  }
}