:root {
  --bio-green: #3D6859;
  --bio-green-light: #4a7a68;
  --bio-green-dark: #2f5145;
  --text-dark: #2c3e50;
  --text-gray: #5a6c7d;
  --bg-light: #fafbfc;
  --bg-white: #ffffff;
  --border-color: #e0e6ed;
  --shadow-subtle: 0 2px 8px rgba(61, 104, 89, 0.08);
  --shadow-hover: 0 4px 12px rgba(61, 104, 89, 0.12);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-dark);
  line-height: 1.7;
  letter-spacing: 0.3px;
  background: linear-gradient(to bottom, #fafbfc 0%, #f5f8f6 100%);
  overflow-x: hidden;
}

h1, h2, h3 {
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.3;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1.25rem;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-gray);
}

.header-fixed {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  box-shadow: var(--shadow-subtle);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--bio-green);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  margin-right: 0.75rem;
  border-radius: 8px;
}

.nav-menu {
  display: none;
}

.nav-menu a {
  color: var(--text-gray);
  text-decoration: none;
  margin-left: 1.5rem;
  font-size: 0.95rem;
  transition: color 0.3s ease;
  letter-spacing: 0.3px;
}

.nav-menu a:hover {
  color: var(--bio-green);
}

.main-content {
  margin-top: 70px;
}

.section {
  padding: 4rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-section {
  padding: 5rem 1.5rem 4rem;
  text-align: center;
  background: linear-gradient(135deg, #f5f8f6 0%, #fafbfc 100%);
}

.hero-content h1 {
  font-size: 2.5rem;
  color: var(--bio-green);
  margin-bottom: 1.5rem;
}

.hero-content p {
  font-size: 1.125rem;
  max-width: 700px;
  margin: 0 auto 2rem;
  color: var(--text-gray);
}

.hero-image {
  max-width: 600px;
  margin: 2rem auto 0;
}

.hero-image img {
  width: 100%;
  border-radius: 12px;
  box-shadow: var(--shadow-subtle);
}

.content-card {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 2.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-subtle);
  transition: box-shadow 0.3s ease;
}

.content-card:hover {
  box-shadow: var(--shadow-hover);
}

.content-with-image {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.content-image {
  width: 100%;
  border-radius: 12px;
  box-shadow: var(--shadow-subtle);
  max-width: 400px;
}

.content-text h2 {
  color: var(--bio-green);
}

.content-text h3 {
  color: var(--bio-green-dark);
  margin-top: 1.5rem;
}

.content-text ul {
  list-style: none;
  padding-left: 0;
  margin: 1rem 0;
}

.content-text li {
  padding: 0.5rem 0 0.5rem 1.5rem;
  position: relative;
  color: var(--text-gray);
}

.content-text li:before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--bio-green);
  font-weight: bold;
  font-size: 1.2rem;
}

.disclaimer-box {
  background: #f0f4f2;
  border-left: 4px solid var(--bio-green);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-gray);
  line-height: 1.6;
}

.cta-box {
  text-align: center;
  padding: 2rem;
  background: linear-gradient(135deg, #f5f8f6 0%, #fafbfc 100%);
  border-radius: 12px;
  margin: 2rem 0;
}

.btn-primary {
  display: inline-block;
  padding: 0.875rem 2rem;
  background: var(--bio-green);
  color: var(--bg-white);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary:hover {
  background: var(--bio-green-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(61, 104, 89, 0.2);
}

.faq-item {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h3 {
  color: var(--bio-green);
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

.contact-section {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 3rem 2rem;
  box-shadow: var(--shadow-subtle);
}

.contact-grid {
  display: grid;
  gap: 3rem;
  align-items: start;
}

.contact-info h2 {
  color: var(--bio-green);
  margin-bottom: 1.5rem;
}

.contact-details {
  margin: 2rem 0;
}

.contact-details p {
  margin-bottom: 0.75rem;
  color: var(--text-gray);
  display: flex;
  align-items: center;
}

.contact-form {
  background: #f5f8f6;
  padding: 2rem;
  border-radius: 12px;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
  font-weight: 500;
  font-size: 0.95rem;
}

.form-control {
  width: 100%;
  padding: 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-dark);
  background: var(--bg-white);
  transition: border-color 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--bio-green);
  box-shadow: 0 0 0 3px rgba(61, 104, 89, 0.1);
}

.footer {
  background: var(--text-dark);
  color: #b8c5d6;
  padding: 3rem 1.5rem 2rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: var(--bg-white);
  font-size: 1.125rem;
  margin-bottom: 1rem;
}

.footer-section p {
  color: #b8c5d6;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: #b8c5d6;
  text-decoration: none;
  transition: color 0.3s ease;
  cursor: pointer;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--bg-white);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #8a9aac;
  font-size: 0.875rem;
}

.educational-notice {
  background: #e8f0ed;
  border: 1px solid var(--bio-green);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 2rem 0;
  font-size: 0.95rem;
  color: var(--text-gray);
  text-align: center;
  font-weight: 500;
}

.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  overflow-y: auto;
}

.modal-content {
  background-color: var(--bg-white);
  margin: 2rem auto;
  padding: 2.5rem;
  border-radius: 12px;
  max-width: 700px;
  width: 90%;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  position: relative;
  max-height: 85vh;
  overflow-y: auto;
}

.modal-close {
  color: var(--text-gray);
  float: right;
  font-size: 2rem;
  font-weight: 300;
  line-height: 1;
  cursor: pointer;
  transition: color 0.3s ease;
}

.modal-close:hover {
  color: var(--text-dark);
}

.modal-content h2 {
  color: var(--bio-green);
  margin-top: 0;
  margin-bottom: 1.5rem;
}

.modal-content p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

.modal-content h3 {
  color: var(--bio-green-dark);
  margin-top: 1.5rem;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-white);
  padding: 1.5rem;
  box-shadow: 0 -2px 16px rgba(0, 0, 0, 0.1);
  z-index: 1500;
  border-top: 2px solid var(--bio-green);
}

.cookie-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.cookie-text {
  flex: 1;
  min-width: 250px;
}

.cookie-text p {
  margin: 0;
  color: var(--text-gray);
  font-size: 0.95rem;
}

.cookie-actions {
  display: flex;
  gap: 1rem;
}

.btn-cookie {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
  font-size: 0.95rem;
}

.btn-accept {
  background: var(--bio-green);
  color: var(--bg-white);
}

.btn-accept:hover {
  background: var(--bio-green-dark);
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  .hero-content h1 {
    font-size: 3.5rem;
  }

  .hero-content p {
    font-size: 1.25rem;
  }

  .content-with-image {
    grid-template-columns: 1fr 1fr;
  }

  .content-with-image.reverse {
    direction: rtl;
  }

  .content-with-image.reverse > * {
    direction: ltr;
  }

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

  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .section {
    padding: 5rem 2rem;
  }

  .hero-section {
    padding: 6rem 2rem 5rem;
  }
}