:root {
  --primary: rgb(141, 198, 65);   
  --secondary: rgb(253, 249, 212);
  --tertiary: rgb(0, 0, 0);   
}

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

body {
  background-color: var(--primary);
  color: var(--tertiary);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.6;
  padding: 2rem;
}

h1, .number {
  font-family: "TT Hoves Pro", sans-serif;
  font-weight: bold;
  color: var(--tertiary); 
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

h2, h3, p {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight: 500;
  margin-bottom: 1rem;
  color: var(--tertiary);
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.25rem;
  opacity: 0.85;
}

a {
  color: var(--secondary);
  text-decoration: none;
  font-weight: bold;
}

a:hover {
  text-decoration: underline;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--tertiary);
  background: var(--secondary);
  color: var(--tertiary);
  font-family: "TT Hoves Pro", sans-serif;
  font-weight: bold;
  text-transform: uppercase;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.btn:hover {
  background: var(--tertiary);
  color: var(--secondary);
}


header {
  border-bottom: 2px solid var(--secondary);
  margin-bottom: 0; 
  padding: 0;
  position: relative;
  height: 212px; 
  overflow: hidden;
}

.header-bg {
  background: url('tnheader.gif') no-repeat right top;
  background-size: contain; 
  position: absolute;
  top: 0; right: 0; bottom: 0; left: 0;
  z-index: -1; 
}


.header-text {
  margin: 1.5rem auto 2rem auto;
  text-align: center;
}

.header-text h1 {
  font-family: "TT Hoves Pro", sans-serif;
  font-weight: bold;
  font-size: 3rem;
  margin: 0 0 0.3rem 0;
  color: var(--tertiary);
}

.header-text h3 {
  font-size: 1.25rem;
  font-weight: 500;
  opacity: 0.85;
  margin: 0;
  transition: opacity 0.6s ease;
}

footer {
  border-top: 2px solid var(--secondary);
  margin-top: 2rem;
  padding-top: 1rem;
  font-size: 0.9rem;
  color: var(--secondary);
  text-align: center;
}

.intro {
  background: var(--secondary);
  color: var(--tertiary);
  padding: 2rem;
  border-radius: 6px;
  max-width: 600px;
  margin: 0 auto;
}

.explore-gif {
  width: 180px;    
  cursor: pointer; 
  border: none;
  display: block;
  margin: 1rem auto; 
}