/* Hero Section CSS */
.hero {
    background: linear-gradient(135deg, #1a1a2e, #16213e 70%);
    color: #f0f0f0;
    text-align: center;
    padding: 120px 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    position: relative;
    overflow: hidden;
  }
  
  .hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.05), transparent 60%);
    animation: pulse 10s infinite alternate;
    z-index: 0;
  }
  
  @keyframes pulse {
    0% {
      transform: scale(1) translate(0, 0);
    }
    100% {
      transform: scale(1.05) translate(10px, 10px);
    }
  }
  
  .hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
  }
  
  .hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 0.4em;
    letter-spacing: 0.1em;
    text-shadow: 0 0 8px #8b99a6;
  }
  
  .hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1em;
    color: #a0aec0;
  }
  
  .hero-description {
    font-size: 1.125rem;
    margin-bottom: 2em;
    line-height: 1.5;
    color: #cbd5e1;
  }
  
  .btn-primary {
    background-color: #4f46e5;
    color: white;
    font-weight: 700;
    padding: 0.75em 2.5em;
    border-radius: 30px;
    text-decoration: none;
    font-size: 1.125rem;
    box-shadow: 0 6px 12px rgba(79, 70, 229, 0.4);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
  }
  
  .btn-primary:hover {
    background-color: #4338ca;
    box-shadow: 0 8px 16px rgba(67, 56, 202, 0.6);
    cursor: pointer;
  }

  .concept {
    background-color: #111722;
    color: #e0e7ff;
    padding: 80px 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  }
  
  .container {
    max-width: 1000px;
    margin: 0 auto;
  }
  
  .section-title {
    font-size: 2.8rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 2rem;
    color: #8f9cf5;
    letter-spacing: 0.05em;
    text-shadow: 0 0 6px #667eea;
  }
  
  .concept-content {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
    align-items: center;
    justify-content: center;
  }
  
  .concept-text {
    flex: 1 1 400px;
    font-size: 1.25rem;
    line-height: 1.6;
    color: #cbd5e1;
    min-width: 280px;
  }
  
  .concept-text p {
    margin-bottom: 1.5rem;
  }
  
  .concept-image {
    flex: 1 1 400px;
    text-align: center;
    min-width: 280px;
  }
  
  .concept-image img {
    max-width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(51, 66, 255, 0.4);
    object-fit: cover;
  }
  @media (max-width: 700px) {
    .concept-content {
      flex-direction: column;
    }
  }

  .features {
    background-color: #121a2a;
    color: #e4e9f8;
    padding: 80px 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  }
  
  .features .container {
    max-width: 960px;
    margin: 0 auto;
  }
  
  .section-title {
    font-size: 2.8rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 2rem;
    color: #7c92f0;
    text-shadow: 0 0 8px #5264f5;
  }
  
  .features-intro p {
    font-size: 1.15rem;
    margin-bottom: 1em;
    line-height: 1.5;
  }
  
  .victory-conditions {
    list-style-type: disc;
    padding-left: 1.5rem;
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
    color: #a3b0ff;
  }
  
  .roles-section {
    display: flex;
    gap: 3rem;
    justify-content: space-around;
    flex-wrap: wrap;
    margin-bottom: 3rem;
  }
  
  .roles h3 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    color: #9ab7ff;
    text-align: center;
    text-shadow: 0 0 6px #5d7ffc;
  }
  
  .role-list {
    list-style-type: none;
    padding-left: 0;
    font-size: 1.1rem;
    line-height: 1.5;
    color: #c6d0ff;
  }
  
  .role-list li {
    margin-bottom: 0.8rem;
    padding-left: 1.1rem;
    position: relative;
  }
  
  .role-list li strong {
    color: #e2e8ff;
    font-weight: 700;
  }
  
  .role-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #7c92f0;
    font-weight: 900;
  }
  
  .media-section {
    text-align: center;
    margin-bottom: 3rem;
  }
  
  .media-section h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #9ab7ff;
  }
  
  .media-wrapper img,
  .media-wrapper video {
    max-width: 100%;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(78, 92, 255, 0.4);
  }
  
  .play-description {
    font-size: 1.2rem;
    line-height: 1.6;
    color: #d1d9ff;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
  }
  
  @media (max-width: 720px) {
    .roles-section {
      flex-direction: column;
      align-items: center;
    }
  }

  /* --- 戦略の一例 --- */
#strategy-example {
  background-color: #171f39;
  color: #d6dbff;
  padding: 70px 20px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  text-align: center;
}

#strategy-example .container {
  max-width: 900px;
  margin: 0 auto;
}

#strategy-example .section-title {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 2rem;
  color: #9baaff;
  text-shadow: 0 0 8px #6b7fff;
}

.strategy-detail {
  background: #222a5e;
  padding: 24px 28px;
  border-radius: 14px;
  box-shadow: 0 6px 20px rgba(85, 94, 180, 0.8);
  margin: 0 auto;
  font-size: 1.18rem;
  line-height: 1.6;
  max-width: 720px;
  text-align: left;
}

/* --- 体験者の声（仮名） --- */
#user-voices {
  background-color: #1a2350;
  color: #d7d9f9;
  padding: 80px 20px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  text-align: center;
}

#user-voices .container {
  max-width: 900px;
  margin: 0 auto;
}

#user-voices .section-title {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 2rem;
  color: #9baaff;
  text-shadow: 0 0 8px #6b7fff;
}

.posts-list {
  list-style: none;
  padding-left: 0;
  max-width: 720px;
  margin: 0 auto;
}

.posts-list .post {
  background: #222a5e;
  border-left: 5px solid #7c92f0;
  margin-bottom: 1.6rem;
  padding: 16px 20px;
  border-radius: 12px;
  font-style: italic;
  color: #ccd4ff;
  font-size: 1.15rem;
  text-align: left;
}

.posts-list .post span {
  display: block;
  margin-top: 10px;
  font-style: normal;
  font-weight: 700;
  color: #a1aef3;
  text-align: right;
}

.cta-section {
  background: linear-gradient(135deg, #5a72ff, #1a2350);
  color: #ffffff;
  padding: 70px 20px;
  text-align: center;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  box-shadow: 0 8px 30px rgba(36, 54, 128, 0.9);
}

.cta-section .container {
  max-width: 720px;
  margin: 0 auto;
}

.cta-title {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 1rem;
  text-shadow: 0 0 12px #a1baff;
}

.cta-text {
  font-size: 1.3rem;
  line-height: 1.6;
  margin-bottom: 2.8rem;
  color: #d0dbff;
}

.cta-button {
  background-color: #7c92f0;
  color: #1a2350;
  font-weight: 800;
  font-size: 1.4rem;
  padding: 18px 50px;
  border-radius: 40px;
  text-decoration: none;
  box-shadow: 0 6px 18px rgba(124, 146, 240, 0.8);
  transition: background-color 0.3s ease, color 0.3s ease;
  display: inline-block;
}

.cta-button:hover,
.cta-button:focus {
  background-color: #5269d4;
  color: #e1e8ff;
  box-shadow: 0 8px 24px rgba(82, 105, 212, 0.9);
  outline: none;
}

.site-footer {
  background-color: #121a3a;
  color: #a3a9ca;
  padding: 30px 20px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 0.9rem;
  text-align: center;
}

.summary-section {
  background-color: #1a223f;
  color: #ffffff;
  padding: 60px 20px;
  text-align: center;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.summary-section h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: #8ea1ff;
}

.summary-section p {
  max-width: 700px;
  margin: 0 auto 20px auto;
  line-height: 1.6;
  font-size: 1rem;
}

.summary-section .cta-button {
  display: inline-block;
  background-color: #8ea1ff;
  color: #121a3a;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.summary-section .cta-button:hover,
.summary-section .cta-button:focus {
  background-color: #a3b4ff;
  transform: scale(1.05);
}

.worldview-section {
  background-color: #0f1c39;
  color: #ffffff;
  padding: 60px 20px;
  text-align: center;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.worldview-section h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: #8ea1ff;
}

.worldview-section p {
  max-width: 700px;
  margin: 0 auto 20px auto;
  line-height: 1.6;
  font-size: 1rem;
}

.worldview-section .cta-button {
  display: inline-block;
  background-color: #8ea1ff;
  color: #121a3a;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.worldview-section .cta-button:hover,
.worldview-section .cta-button:focus {
  background-color: #a3b4ff;
  transform: scale(1.05);
}

.lang-switcher {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  z-index: 10;
}
.lang-switcher a {
  color: white;
  text-decoration: underline;
  margin-right: 1rem;
}
.lang-switcher a:last-child {
  margin-right: 0;
}