* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      color: #fff;
      font-family: "heisei-mincho-stdn", serif;
      font-weight: 300;
      font-style: normal;
    }

    
    body {
      background:url(img/bk-mani.jpg)repeat;
      color: #fff;
      overflow-x: hidden;
      
    }

    .subtitle{
      font-size: 1.3rem;
      font-weight: bold;
      text-decoration: underline;
      margin-bottom: 5%;
      text-align: left;
    }


    /* ===== HEADER ===== */
    header {
      position: fixed;
      top: 0;
      width: 100%;
      padding: 10px 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: rgba(0,0,0,0.4);
      backdrop-filter: blur(10px);
      z-index: 1000;
    }

/* footer */

.footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 50px 20px;
}

.footer-inner {
  max-width: 900px;
  margin: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

/* ロゴ部分 */
.footer-brand {
  display: flex;
  align-items: center;
}

.footer-logo {
  
  height: auto;
}
.footer-brand  img{
  width: 50%;
  display: block;
  margin: 2% auto;
}

.footer-name {
  font-size: 1rem;
  font-weight: bold;
  letter-spacing: 0.5px;
  color: #ffffff;
}

/* コピーライト */
.copyright {
  font-size: 0.85rem;
  opacity: 0.75;
}

/* リンク */
.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.85rem;
  transition: 0.2s;
}

.footer-links a:hover {
  color: #ffffff;
  text-decoration: underline;
}





    .logo {
      font-weight: bold;
    }
    .logo img{
      width: 50%;
      padding: 1%;
    }
    nav ul {
      display: flex;
      gap: 20px;
      list-style: none;
    }

    nav a {
      color: #fff;
      text-decoration: none;
      transition: 0.3s;
    }

    nav a:hover {
      color: #ff4d4d;
    }

    /* ===== HAMBURGER ===== */
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      z-index: 1100;
    }

    .hamburger span {
      width: 26px;
      height: 2px;
      background: #fff;
      transition: 0.4s;
    }

    /* ハンバーガー → × */
    .hamburger.active span:nth-child(1) {
      transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
      opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
      transform: rotate(-45deg) translate(6px, -6px);
    }

    /* ===== MOBILE MENU ===== */
    .mobile-menu {
      position: fixed;
      top: 0;
      right: -100%;
      width: 75%;
      height: 100vh;
      background: #111;
      padding: 100px 30px;
      display: flex;
      flex-direction: column;
      gap: 25px;
      transition: 0.5s ease;
      opacity: 0;
      z-index: 100;
    }

    .mobile-menu a {
      color: #fff;
      text-decoration: none;
      font-size: 1.3rem;
      transform: translateX(20px);
      opacity: 0;
      transition: 0.4s;
    }

    .mobile-menu.active {
      right: 0;
      opacity: 1;
    }

    .mobile-menu.active a {
      transform: translateX(0);
      opacity: 1;
    }

    .mobile-menu.active a:nth-child(1){ transition-delay: 0.1s; }
    .mobile-menu.active a:nth-child(2){ transition-delay: 0.2s; }
    .mobile-menu.active a:nth-child(3){ transition-delay: 0.3s; }

    /* ===== HERO ===== */
    .hero {
      height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      position: relative;
      padding-top: 150px;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
    }

    .hero-content {
      position: relative;
      max-width: 800px;
      opacity: 0;
      transform: translateY(30px);
      animation: fadeUp 1s ease forwards;
    }

    h2.features-h2{
      padding: 3%;
      font-weight: bold;
    }

    h2.features-p2{
      padding: 3%;
      font-weight: bold;
    }

    .parts {margin-bottom: 10%;}
    .parts2 {margin-bottom: 1%;}
    .parts img{
      width: 100%;
    }
    .parts2 img{
      width: 70%;
    }


    .imgpdf{
    width: 60%;
    margin: 2% auto;
  
  }

  
    .imgpdf img{
    width: 60%;
    }



/* ボタンデザイン */
a.sample_btn {
  font-size: 1.5rem;
  display: inline-block;
  width: 300px;
  text-align: center;
  text-decoration: none;
  line-height: 80px;
  color: #fff;
  background-color: #1B85FB;
}
a.sample_btn:hover {
  background-position: right center;
  background-size: 200% auto;
  -webkit-animation: pulse 2s infinite;
  animation: ripple 1.5s infinite;
  color: #fff;
}
@keyframes ripple {
  0% {box-shadow: 0 0 0 0 #1B85FB;}
  70% {box-shadow: 0 0 0 10px rgb(27 133 251 / 0%);}
  100% {box-shadow: 0 0 0 0 rgb(27 133 251 / 0%);}
}








/* 以下はレイアウト調整用 */
body{
  vertical-align:middle; 
  padding: 50px 0;
  text-align: center;
}



    @keyframes fadeUp {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .hero h1 {
      font-size: 3rem;
      margin-bottom: 20px;
    }

  .hero h1 img{
      width: 100%;
    }

    .btn {
      display: inline-block;
      margin-top: 20px;
      padding: 12px 28px;
      background: #ff4d4d;
      color: #fff;
      text-decoration: none;
      border-radius: 30px;
      transition: 0.3s;
    }

    .btn:hover {
      transform: scale(1.05);
      background: #ff1f1f;
    }

    section {
      padding: 30px 10px;
      max-width: 1100px;
      margin: auto;
      opacity: 0;
      transform: translateY(40px);
      transition: 0.8s ease;
    }

    section.show {
      opacity: 1;
      transform: translateY(0);
    }

    h2 {
      text-align: center;
      margin-bottom: 30px;
    }

    /* responsive */
    @media (max-width: 768px) {
      nav ul {
        display: none;
      }

      .hamburger {
        display: flex;
      }

      .hero h1 {
        font-size: 2rem;
      }


   /* ===== HERO ===== */
    .hero {
      height: 60vh;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      position: relative;
      padding-top: 40px;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
    }

    .parts2 img{
      width: 100%;
    }




      
    }