body {
  margin:0;
  background:#0d0d0d;
  color:white;
  font-family: "Hiragino Mincho ProN", serif;
  text-align:center;
}

header {
  padding:80px 20px;
}

.gold {
  color:#b48a5a;
}

h1 {
  margin-bottom:10px;
}

section {
  padding:40px 20px;
}

.btn {
  display:inline-block;
  padding:12px 30px;
  background:#7a1f1f;
  color:white;
  text-decoration:none;
  border-radius:5px;
}

input {
  padding:10px;
  width:70%;
  max-width:300px;
}
/* 背景動画 */
#bg-video {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

/* 暗いフィルター（色気用） */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  z-index: -1;
}