:root {
    --primary-color: #0056b3;
    --secondary-color: #6c757d;
    --accent-color: #ff6b00;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
  }

  * {
    box-sizing: border-box;
  }

  body {
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
  }

  /* Header */
  .header {
    background-color: #fff;
    border-bottom: 1px solid #e9ecef;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
  }

  /* Hero Slider */
  .hero-slider {
    position: relative;
    overflow: hidden;
    height: 550px;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  }

  .slider-container {
    position: relative;
    height: 100%;
    overflow: hidden;
    width: 100%;
    /* max-width: 1200px; */
    margin: 0 auto;
  }

  .slider-track {
    display: flex;
    height: 100%;
    width: 100%; 
    transition: transform 0.5s ease-in-out;
  }
  .slider-slide {
    min-width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 2rem;
  }

  .slide-content {
    flex: 1;
    padding-right: 3rem;
    max-width: 50%;
  }

  .slide-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    line-height: 1.2;
  }

  .slide-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--secondary-color);
    line-height: 1.6;
  }

  .slide-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 4px 10px rgba(255, 107, 0, 0.3);
  }

  .slide-btn:hover {
    background-color: #e05a00;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(255, 107, 0, 0.4);
  }

  .slide-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 50%;
  }

  .slide-image img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    object-fit: contain;
  }

  .slider-nav {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    z-index: 10;
  }

  .slider-dots {
    display: flex;
    gap: 10px;
    background-color: rgba(255, 255, 255, 0.7);
    padding: 8px 15px;
    border-radius: 30px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  }

  .slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(0, 86, 179, 0.3);
    cursor: pointer;
    transition: var(--transition);
  }

  .slider-dot.active {
    background-color: var(--primary-color);
    transform: scale(1.2);
  }

  .slider-arrows {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    transform: translateY(-50%);
    z-index: 10;
  }

  .slider-arrow {
    background-color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--primary-color);
    font-size: 1.5rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  }

  .slider-arrow:hover {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.1);
  }

  /* Responsive Adjustments */
  @media (max-width: 768px) {
    .hero-slider {
      height: auto;
      padding: 2rem 0;
    }
    
    .slider-slide {
      flex-direction: column;
      padding: 1rem;
    }
    
    .slide-content {
      max-width: 100%;
      padding-right: 0;
      text-align: center;
      margin-bottom: 2rem;
    }
    
    .slide-content h2 {
      font-size: 1.8rem;
    }
    
    .slide-content p {
      font-size: 1rem;
    }
    
    .slide-image {
      max-width: 100%;
    }
    
    .slide-image img {
      max-height: 250px;
    }
    
    .slider-arrow {
      width: 40px;
      height: 40px;
      font-size: 1.2rem;
    }
  }

  /* Section Titles */
  .section-title {
    font-weight: 700;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 15px;
    text-align: center;
    margin-bottom: 3rem;
  }

  .section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
  }

  /* Plan Cards */
  .plan-card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    overflow: hidden;
    margin-bottom: 2rem;
  }

  .plan-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  }

  .plan-header {
    background-color: var(--light-color);
    border-bottom: 1px solid #e9ecef;
    padding: 1rem;
  }

  .plan-main {
    padding: 1rem 0;
  }

  .plan-discount, .plan-more {
    margin: 1rem 0;
  }

  .plan-notes {
    font-size: 0.85rem;
    color: var(--secondary-color);
  }

  .note-marker {
    color: var(--accent-color);
    font-weight: bold;
    margin-right: 5px;
  }

  .plan-notice {
    margin-top: 1rem;
  }

  /* Plan Warnings */
  .plan-warnings {
    margin-top: 1.5rem;
  }

  .warnings-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--danger-color);
    margin-bottom: 1rem;
  }

  .accordion-button {
    font-weight: 600;
    padding: 0.75rem 1rem;
  }

  .accordion-button:not(.collapsed) {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
  }

  .accordion-body {
    font-size: 0.85rem;
    line-height: 1.5;
  }

  /* Date Warning */
  .date-warning {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #e9ecef;
  }

  /* Plan Details */
  .plan-details {
    font-size: 0.9rem;
    line-height: 1.7;
  }

  .plan-details p {
    margin-bottom: 1.5rem;
  }

  .detail-title {
    font-weight: 600;
    color: var(--primary-color);
  }

  /* Flow Section */
  .flow-section {
    background-color: var(--light-color);
    padding: 5rem 0;
  }

  .flow-step {
    padding: 2rem 1rem;
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    height: 100%;
    transition: var(--transition);
    text-align: center;
    position: relative;
  }

  .flow-step:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
  }

  .step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
  }

  .step-header {
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
  }

  .step-content {
    line-height: 1.6;
  }

  /* CTA Section */
  .cta-section {
    background-color: #fff;
    padding: 5rem 0;
  }

  .cta-btn {
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    background-color: #ff6b35 !important;
    color: white;
    border: none;
    display: inline-block;
    text-decoration: none;
  }

  .cta-btn:hover {
    transform: scale(1.05);
    background-color: #004494;
    color: white;
  }

  .contact-info {
    font-size: 0.9rem;
  }

  /* FAQ Section */
  .faq-section {
    background-color: var(--light-color);
    padding: 5rem 0;
  }

  .faq-item {
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
    transition: var(--transition);
    margin-bottom: 1.5rem;
  }

  .faq-item:hover {
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
  }

  .faq-question {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 1.1rem;
  }

  .faq-answer {
    line-height: 1.6;
  }

  .faq-list {
    list-style-type: none;
    padding-left: 0;
  }

  .faq-list li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
  }

  .faq-marker {
    color: var(--accent-color);
    font-weight: bold;
    position: absolute;
    left: 0;
  }

  /* Footer CTA */
  .footer-cta {
    background-color: var(--primary-color);
    color: white;
    padding: 4rem 0;
  }

  /* Footer */
  .footer {
    background-color: var(--dark-color);
    color: white;
    padding: 3rem 0;
  }

  /* Responsive Adjustments */
  @media (max-width: 768px) {
    
    .slide-content h2 {
      font-size: 1.8rem;
    }
    
    .slide-content p {
      font-size: 1rem;
    }
    
    .section-title {
      font-size: 1.5rem;
    }
    
    .plan-card {
      margin-bottom: 2rem;
    }
    
    .flow-step {
      margin-bottom: 2rem;
    }
    
    .cta-btn {
      width: 100%;
    }
    
    .slider-arrow {
      width: 40px;
      height: 40px;
      font-size: 1.2rem;
    }
  }

  /* Button Styles */
  .btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
  }

  .btn-primary:hover {
    background-color: #004494;
    border-color: #004494;
  }

  .btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
  }

  .btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
  }

  /* Link Styles */
  a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
  }

  a:hover {
    color: #004494;
    text-decoration: underline;
  }

  /* Utility Classes */
  .text-primary {
    color: var(--primary-color) !important;
  }

  .bg-primary {
    background-color: var(--primary-color) !important;
  }

  .bg-light {
    background-color: var(--light-color) !important;
  }