* {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }
  
  body {
    margin: 0;
    font-family: 'Shippori Mincho B1', serif;
    line-height: 1.6;
    background-color: #fff;
    color: #000;
  }

  /* スクロール用 */
  section {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
  }
  
  section.active {
    opacity: 1;
    transform: translateY(0);
  }
  /* スクロール用 */
  
  .page-wrapper {
    display: flex;
    flex-direction: row-reverse;
    flex-wrap: nowrap;
    gap: 20px;
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
  }

  /* loading -------------------------------------------------------------- */
  #welcome-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #184b6e;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-family: 'Shippori Mincho B1', serif;
    z-index: 9999;
    opacity: 1;
    transition: opacity 1.5s ease;
  }
  
  .welcome-message {
    animation: slideFadeIn 2s ease forwards;
    text-align: center;
    font-size: 1.8rem;
    letter-spacing: 0.05em;
    color: rgba(255,255,255,0.9);
  }

  @keyframes slideFadeIn {
    0% {
      transform: translateY(-20px);
      opacity: 0;
    }
    50% {
      transform: translateY(0);
      opacity: 1;
    }
    100% {
      transform: translateY(0);
      opacity: 1;
    }
  }
  /* loading -------------------------------------------------------------- */

  /* parts -------------------------------------------------------------- */
  .mb_40 {
    margin-bottom: 40px;
  }

  .mt_40 {
    margin-top: 40px;
  }

  .mt_80 {
    margin-top: 80px;
  }

  .txt_L {
    text-align: left;
  }
  /* parts -------------------------------------------------------------- */

  /* logo -------------------------------------------------------------- */
  .logo-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 40px 8px 20px;
    background-color: #ffffff;
    flex-wrap: wrap;
  }
  
  .logo-wrapper img {
    width: 80px;
    height: auto;
  }
  
  .header-nav ul {
    display: flex;
    gap: 50px;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  
  .header-nav a {
    text-decoration: none;
    color: #184b6e;
    font-size: 1rem;
    letter-spacing: 1.8px;
    font-weight: 400;
    position: relative;
    transition: color 0.3s ease;
  }
  
  .header-nav a::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: #dceeff;
    transition: width 0.4s ease;
    border-radius: 4px;
  }
  
  .header-nav a:hover {
    color: #0a3551;
  }
  
  .header-nav a:hover::after {
    width: 100%;
  }
  
  .header-nav a:hover {
    transform: translateY(-2px);
  }
  
  @media (max-width: 768px) {
    .header-nav ul {
      flex-direction: column;
      gap: 16px;
      margin-top: 12px;
      width: 100%;
      align-items: flex-start;
    }
  
    .logo-wrapper {
      flex-direction: column;
      align-items: flex-start;
    }
  }
  /* logo -------------------------------------------------------------- */
  
  /* Main content -------------------------------------------------------------- */
  .first-block {
    position: relative;
    padding: 60px 0;
    background-color: #184b6e;
    overflow: hidden;
  }
  
  .catch-box {
    position: absolute;
    top: 80px;
    left: 47%;
    height: 600px;
    transform: translateX(-50%);
    z-index: 10;
    background-color: #184b6e;
    padding: 40px;
    text-align: center;
    max-width: 800px;
  }
  
  .catch-box h1 {
    font-size: 2.6rem;
    color: #ffffff;
    margin-bottom: 40px;
    line-height: 1.4;
    border-top: 1px solid #fff;
    border-bottom: 1px solid #fff;
    padding: 20px 0;
  }
  
  .catch-box p {
    font-size: 1.1rem;
    line-height: 2.5;
    color: #ffffff;
  }

  .name {
    margin-top: 40px;
  }
  
  .first-slider {
    margin-top: 20px;
  }
  
  .first-slider .splide__slide img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    border-radius: 12px;
  }
  /* Main content -------------------------------------------------------------- */
  
  /* Profile -------------------------------------------------------------- */
  .profile-section {
    background-color: #f9fafd;
    padding: 80px 20px 80px;
    color: #184b6e;
  }
  
  .profile-container {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    gap: 40px;
    align-items: flex-start;
    flex-wrap: wrap;
  }
  
  .profile-image {
    flex: 1 1 300px;
    max-width: 400px;
    margin-top: 1.5rem;
  }
  
  .profile-image img {
    width: 100%;
    border-radius: 12px;
    object-fit: cover;
  }
  
  .profile-text {
    flex: 2 1 500px;
  }
  
  .section-title {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--accent-navy);
    border-bottom: 1px solid #ccc;
  }
  
  .section-title span {
    display: block;
    font-size: 0.9rem;
    font-weight: 300;
    color: #888;
  }
  
  .name-ja {
    font-size: 1.8rem;
    font-weight: bold;
    margin: 1rem 0 0.2rem;
  }
  
  .name-en {
    font-size: 1rem;
    font-weight: 300;
    margin-bottom: 1rem;
    letter-spacing: 1px;
  }
  
  .profile-qualifications {
    list-style: none;
    padding: 0;
    margin-bottom: 1.5rem;
  }
  
  .profile-qualifications li {
    margin-bottom: 0.3rem;
    position: relative;
    padding-left: 1em;
  }
  
  .profile-qualifications li::before {
    content: "●";
    font-size: 0.6rem;
    position: absolute;
    left: 0;
    top: 0.2rem;
    color: var(--main-blue);
  }
  
  .catch {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 500;
    color: #003366;
  }
  
  .bio {
    line-height: 1.8;
    font-size: 1rem;
    color: #333;
  }
  
  /* レスポンシブ */
  @media (max-width: 768px) {
    .profile-container {
      flex-direction: column;
      gap: 30px;
    }
  
    .profile-text {
      text-align: left;
    }
  
    .name-ja {
      font-size: 1.6rem;
      text-align: left;
    }
  
    .catch {
      font-size: 1.1rem;
    }
  }

  /* Vision -------------------------------------------------------------- */
  .vision-section {
    /* background-color: #f8fafd; */
    background-image: url(/img/vision_001.jpeg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 100px 20px 80px;
    text-align: center;
    font-family: 'Shippori Mincho B1', serif;
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 1.2s ease, transform 1.2s ease;
  }

  .vision-section::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.35);
    z-index: 0;
  }
  
  .vision-section.active {
    opacity: 1;
    transform: translateY(0);
  }
  
  .vision-inner {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
  }
  
  .vision-title {
    font-size: 5rem;
    color: #fff;
    margin-bottom: 1rem;
    margin-top: 0;
  }
  
  .vision-sub {
    font-size: 1.6rem;
    color: #fff;
    margin-bottom: 2.5rem;
    line-height: 1.8;
  }
  
  .vision-text {
    font-size: 1rem;
    color: #fff;
    line-height: 2;
    text-align: left;
    columns: 2;
    column-gap: 40px;
  }
  
  @media (max-width: 768px) {
    .vision-title {
      font-size: 3rem;
    }
    .vision-text {
      columns: 1;
      text-align: justify;
    }
  }
  
  /* Works -------------------------------------------------------------- */
  .works-section {
    position: relative;
    background-color: #ffffff;
    padding: 140px 20px 80px;
    text-align: center;
    overflow: hidden;
  }
  
  .works-section::before {
    content: "WORKS";
    position: absolute;
    top: 40px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10rem;
    font-weight: 900;
    color: rgba(220, 230, 240, 0.3);
    pointer-events: none;
    z-index: 0;
  }
  
  .works-inner {
    max-width: 1100px;
    margin: 0 auto;
  }
  
  .works-title {
    font-size: 2.6rem;
    color: #184b6e;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
  }
  
  .works-sub {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 3rem;
    z-index: 1;
    position: relative;
  }
  
  .works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
  }
  
  .works-card {
    background-color: #f6f9fc;
    border-radius: 16px;
    padding: 40px 28px;
    text-align: left;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  
  .works-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
  }
  
  .work-title {
    font-size: 1.3rem;
    font-weight: bold;
    color: #184b6e;
    margin-bottom: 1rem;
  }
  
  .work-desc {
    font-size: 1rem;
    color: #333;
    margin-bottom: 1.5rem;
    line-height: 1.8;
  }
  
  .work-link {
    display: inline-block;
    font-size: 1rem;
    color: #0078D7;
    background-color: #e6f2ff;
    padding: 8px 16px;
    border-radius: 6px;
    transition: background-color 0.3s ease;
  }
  
  .work-link:hover {
    background-color: #d0e9ff;
  }
  

  /* Media -------------------------------------------------------------- */
  .media-books-section {
    background: #f9fbfd;
    padding: 100px 20px;
  }
  
  .media-books-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
  }
  
  .section-title {
    font-size: 2rem;
    color: #184b6e;
    margin-bottom: 1.5rem;
    position: relative;
  }
  
  .book-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
  }
  
  .book-card {
    display: flex;
    gap: 20px;
    background-color: #ffffff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.06);
    align-items: center;
  }
  
  .book-card img {
    width: 120px;
    border-radius: 8px;
  }
  
  .book-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
    color: #184b6e;
  }
  
  .book-info p {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
  }
  
  .book-info a {
    font-size: 0.9rem;
    color: #0078D7;
    text-decoration: none;
    background: #e6f2ff;
    padding: 6px 12px;
    border-radius: 6px;
  }
  
  .book-info a:hover {
    background: #d0e9ff;
  }
  
  .media-video-wrapper {
    position: relative;
    margin-bottom: 2rem;
  }
  
  .video-title {
    position: absolute;
    top: 12px;
    left: 12px;
    background-color: rgba(24, 75, 110, 0.85);
    color: #fff;
    font-size: 1rem;
    padding: 6px 12px;
    border-radius: 6px;
    font-weight: 500;
    z-index: 2;
  }
  
  .media-video iframe {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  }
  
  @media (max-width: 768px) {
    .media-books-inner {
      grid-template-columns: 1fr;
    }
  
    .book-card {
      flex-direction: column;
      text-align: center;
    }
  
    .book-card img {
      width: 100px;
    }
  }


  /* Contact */
  .contact-section {
    background-color: #f6f9fc;
    padding: 100px 20px;
    text-align: center;
  }
  
  .contact-inner {
    max-width: 700px;
    margin: 0 auto;
  }
  
  .contact-sub {
    font-size: 1rem;
    color: #555;
    margin-bottom: 2.5rem;
  }
  
  .contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    text-align: left;
  }
  
  .form-group label {
    font-weight: 500;
    color: #184b6e;
    display: block;
    margin-bottom: 0.5rem;
  }
  
  .form-group input,
  .form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border 0.3s ease;
  }
  
  .form-group input:focus,
  .form-group textarea:focus {
    border-color: #0078D7;
    outline: none;
  }
  
  /* 送信ボタン */
  .submit-button {
    background: linear-gradient(90deg, #0078D7, #61aee5);
    color: #fff;
    font-size: 1.1rem;
    padding: 14px 60px;
    border: none;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.4s ease;
    font-weight: 500;
    font-family: 'Shippori Mincho B1', serif;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  }
  
  .submit-button:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
  }