:root {
  --verde-principal: #1f7a3d;
  --verde-oscuro: #0d4620;
  --verde-suave: #eaf5ed;
  --verde-claro: #d4f1e0;
  --texto: #1f2937;
  --texto-claro: #5a6c7d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--texto);
  background: linear-gradient(135deg, #f0f9f5 0%, #ffffff 100%);
}

header {
  background: linear-gradient(135deg, var(--verde-oscuro) 0%, var(--verde-principal) 100%);
  color: #ffffff;
  text-align: center;
  padding: 3rem 1rem;
  box-shadow: 0 4px 15px rgba(31, 122, 61, 0.2);
}

header img {
  width: 220px;
  height: 220px;
  border: 4px solid #ffffff;
  border-radius: 50%;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease;
}

header img:hover {
  transform: scale(1.05);
}

.logo-fallback {
  display: block;
  margin: 1rem 0 0;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

section {
  background: linear-gradient(135deg, var(--verde-claro) 0%, var(--verde-suave) 100%);
  border-left: 6px solid var(--verde-principal);
  border-radius: 12px;
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 8px rgba(31, 122, 61, 0.08);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

section:hover {
  box-shadow: 0 6px 16px rgba(31, 122, 61, 0.15);
  transform: translateY(-2px);
}

h1 {
  margin: 1rem 0 0.5rem;
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.marca {
  margin: 0;
  font-weight: 600;
  font-size: 1.1rem;
  opacity: 0.95;
}

h2 {
  margin: 0 0 1rem;
  color: var(--verde-oscuro);
  font-size: 2.2rem;
  font-weight: 700;
}

h3 {
  color: var(--verde-principal);
  font-size: 1.7rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

h4 {
  color: var(--verde-principal);
  font-size: 1.35rem;
  font-weight: 600;
  margin: 1rem 0 0.5rem;
}

ul {
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.9rem;
  color: var(--texto-claro);
  line-height: 1.8;
  font-size: 1.15rem;
}

a {
  color: var(--verde-oscuro);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border-bottom: 2px solid transparent;
}

a:hover {
  color: var(--verde-principal);
  border-bottom-color: var(--verde-principal);
}

p {
  margin: 0.75rem 0;
  color: var(--texto-claro);
  line-height: 1.8;
  font-size: 1.2rem;
}