body {
  margin: 0;
  ffont-family: 'Noto Serif JP', serif;
  color: #111;
  background: #fff;
  line-height: 1.7;
  font-size: 14px;
}

img {
  width: 100%;
  display: block;
}

.container {
  padding: 24px;
  max-width: 600px;
  margin: auto;
}

h1, h2 {
  font-weight: 600;
  margin-bottom: 10px;
}

.hero {
  position: relative;
  height: 75vh;
  min-height: 500px;
  overflow: hidden;
}

.hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.25);
  z-index: 1;
}

.hero-text {
  position: absolute;
  bottom: 40px;
  left: 24px;
  color: white;
  z-index: 2;
}

.hero-text h1 {
  font-size: 42px;
  margin: 0;
  letter-spacing: 0.08em;
}

.hero-text p {
  margin-top: 8px;
  font-size: 14px;
}

.btn {
  display: block;
  text-align: center;
  background: #c40000;
  color: #fff;
  padding: 15px;
  text-decoration: none;
  margin-top: 15px;
}

.section {
  margin: 40px 0;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

iframe {
  width: 100%;
  height: 250px;
  border: none;
}

.fixed-btn {
  position: fixed;
  bottom: 0;
  width: 100%;
  background: #c40000;
  color: #fff;
  text-align: center;
  padding: 15px;
  text-decoration: none;
  font-weight: bold;
}

.hamburger {

  display: block;

}
.hamburger {

  position: fixed;

  top: 20px;

  right: 20px;

  z-index: 9999;

  font-size: 32px;

  color: white;

  cursor: pointer;

}
.sp-menu {

  position: fixed;

  top: 0;

  right: -100%;

  width: 320px;

  height: 100vh;

  background: rgba(0,0,0,0.95);

  z-index: 9998;

  padding-top: 100px;

  transition: 0.3s;

  display: flex;

  flex-direction: column;

  backdrop-filter: blur(10px);

}

.sp-menu.active {

  right: 0;

}

.sp-menu a {

  color: white;

  text-decoration: none;

  padding: 20px 30px;

  font-size: 18px;

  border-bottom: 1px solid rgba(255,255,255,0.1);

}
.footer {

  text-align: center;

  padding: 40px 20px 100px;

  font-size: 12px;

  color: #777;

  letter-spacing: 0.05em;
  border-top: 1px solid #eee;

}

.fade-up {

  opacity: 0;

  transform: translateY(30px);

  transition: 1s;

}

.fade-up.active {

  opacity: 1;

  transform: translateY(0);

}

@media (max-width: 768px) {

  .sp-menu {

    position: fixed;

    top: 0;

    right: -100%;

    width: 70%;

    height: 100vh;

    background: rgba(0,0,0,0.95);

    z-index: 9998;

    padding-top: 100px;

    transition: 0.3s;

    display: flex;

    flex-direction: column;

  }

  .sp-menu.active {

    right: 0;

  }

  .sp-menu a {

    color: white;

    text-decoration: none;

    padding: 20px 30px;

    font-size: 18px;

    border-bottom: 1px solid rgba(255,255,255,0.1);

  }

}