@charset "UTF-8";

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

html{
  scroll-behavior:smooth;
}

html,
body {
    height: 100%;
    margin: 0;
}

body {
  margin: 0;
  font-family: "Yu Gothic", sans-serif;
  background: #fffaf5;
  color: #333;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
    flex: 1;
}

.page-header{
  display: flex;
  justify-content: space-between;
}

.logo h3{
  font-size: 2rem;
  color: #d97706;
  font-family: "Times New Roman", serif;
  letter-spacing: 3px;
}

.main-nav{
  display: flex;
  font-size: 1.25rem;
  list-style: none;
  gap: 35px;
}

.main-nav li{
  margin-left: 36px;
}

nav a{
  font-weight: 600;
  color: #555;
  text-decoration: none;
  position: relative;
  transition: 0.3s;
}

nav a::after{
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  background: #f97316;
  left: 0;
  bottom: -5px;
  transition: 0.3s;
}

nav a:hover::after{
  width: 100%;
}

.concept {
  max-width: 800px;
  margin: 80px auto;
  text-align: center;
  padding: 0 20px;
}

h1{
  text-align: center;
  font-size: 4rem;
  color: #d97706;
  margin-top: 80px;
  letter-spacing: 5px;
  font-family: "Times New Roman", serif;
}

.concept h1 {
  font-size: 2.5rem;
  color: #8b5e3c;
  margin-bottom: 40px;
  letter-spacing: 3px;
}

.concept p {
  font-size: 1.8rem;
  line-height: 2.2;
  color: #555;
}

.concept h1::before,
.concept h1::after {
  content: "";
  display: block;
  width: 80px;
  height: 2px;
  background: #c9a66b;
  margin: 15px auto;
}

footer {
  margin-top: auto;
  text-align: center;
  padding: 25px;
  background: #f2e3d8;
  color: #8b5e3c;
}

footer a{
  color: #555;
}