@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

body {
  margin: 0;
  font-family: 'Roboto', sans-serif;
  background: linear-gradient(rgba(25, 45, 60, 0.85), rgba(15, 30, 45, 0.9)),
    url('https://images.pexels.com/photos/267569/pexels-photo-267569.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260') no-repeat center center fixed;
  background-size: cover;
  color: #e0e7f3;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 55px 20px;
}

.organic-container {
  background-color: rgba(40, 60, 80, 0.9);
  max-width: 860px;
  padding: 48px 52px;
  border-radius: 18px;
  box-shadow: 0 0 42px rgba(20, 40, 60, 0.75);
  animation: fadeInUp 1.6s ease forwards;
}

header {
  text-align: center;
  margin-bottom: 38px;
}

h1 {
  font-weight: 700;
  font-size: 3rem;
  letter-spacing: 1.4px;
  color: #a8c1e8;
  text-shadow: 0 0 12px #7b94c9;
  margin-bottom: 10px;
}

.back-link {
  font-weight: 600;
  font-size: 1.15rem;
  color: #a8c1e8;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.3s ease;
  display: inline-block;
  margin-top: 12px;
}
.back-link:hover {
  border-bottom: 2px solid #a8c1e8;
}

h2 {
  color: #abc6f7;
  border-bottom: 3px solid #7b94c9;
  padding-bottom: 7px;
  margin-top: 36px;
  margin-bottom: 24px;
  font-weight: 700;
}

.intro p,
.fundamentals ul {
  font-size: 1.18rem;
  line-height: 1.68;
  max-width: 720px;
  margin: 0 auto;
}

.fundamentals ul {
  list-style-type: disc;
  padding-left: 30px;
}

.fundamentals li {
  margin-bottom: 15px;
}

.video iframe {
  display: block;
  margin: 32px auto;
  width: 100%;
  max-width: 560px;
  height: 315px;
  border-radius: 16px;
  box-shadow: 0 0 28px #7b94c9cc;
}

/* Animations */
@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(40px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}