:root {
      --primary-green-color: #4CAF50;
      --primary-dark-green-color: #388E3C;
      --primary-light-green-color: #C8E6C9;
      --secondary-black-color: #000000;
      --accent-green-color: #8BC34A;
      --light-background-color: #F1F8E9;
      --dark-text-color: #212121;
      --gray-text-color: #757575;
      --text-on-dark-background: #FFFFFF;
    }

    body {
      font-family: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', Meiryo, sans-serif;
      margin: 0;
      padding: 0;
      background-color: var(--light-background-color);
      color: var(--dark-text-color);
      line-height: 1.6;
    }

    .main-community-container-wrapper {
      max-width: 800px;
      margin: 0 auto;
      padding: 0;
      background-color: #fff;
      box-shadow: 0 5px 30px rgba(0,0,0,0.1);
      overflow: hidden;
      border-radius: 10px;
    }

    .community-header-section {
      background: linear-gradient(135deg, var(--secondary-black-color) 0%, #333 100%);
      color: var(--primary-light-green-color);
      padding: 30px 20px;
      text-align: center;
      position: relative;
    }

    .community-header-section h1 {
      margin: 0;
      font-size: 2.2rem;
      font-weight: 700;
      letter-spacing: -0.5px;
    }

    .community-header-section p {
      margin: 10px 0 0;
      font-size: 1.1rem;
      opacity: 0.9;
    }

    .profile-instructor-section {
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 40px 20px;
      background-color: #fff;
      border-bottom: 1px solid rgba(0,0,0,0.1);
      text-align: center;
    }

    .profile-image-round-wrapper {
      position: relative;
      margin-bottom: 25px;
    }

    .profile-image-circle-avatar {
      width: 180px;
      height: 180px;
      border-radius: 50%;
      object-fit: cover;
      border: 5px solid var(--primary-green-color);
      box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    }

    .verified-badge-icon-overlay {
      position: absolute;
      bottom: 10px;
      right: 10px;
      background-color: var(--primary-green-color);
      color: var(--text-on-dark-background);
      width: 40px;
      height: 40px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      border: 3px solid white;
    }

    .profile-instructor-section h2 {
      color: var(--secondary-black-color);
      margin-bottom: 20px;
      font-size: 1.8rem;
      position: relative;
      display: inline-block;
    }

    .profile-instructor-section h2:after {
      content: "";
      position: absolute;
      bottom: -10px;
      left: 50%;
      transform: translateX(-50%);
      width: 50px;
      height: 3px;
      background-color: var(--primary-green-color);
    }

    .highlighted-keyword-text {
      color: var(--primary-dark-green-color);
      font-weight: 700;
    }

    .methodology-learning-section {
      padding: 40px 20px;
      background-color: #fff;
    }

    .methodology-learning-section h2 {
      text-align: center;
      color: var(--secondary-black-color);
      margin-bottom: 30px;
      font-size: 1.8rem;
    }

    .learning-step-flex-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      max-width: 800px;
      margin: 0 auto;
    }

    .learning-step-card-item {
      flex: 1;
      min-width: 250px;
      background-color: var(--light-background-color);
      padding: 25px 20px;
      border-radius: 8px;
      box-shadow: 0 3px 15px rgba(0,0,0,0.05);
      text-align: center;
      border-top: 4px solid var(--primary-green-color);
    }

    .learning-step-card-item .step-number-circle {
      background-color: var(--primary-green-color);
      color: var(--text-on-dark-background);
      width: 40px;
      height: 40px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin: 0 auto 15px;
    }

    .learning-step-card-item h3 {
      color: var(--secondary-black-color);
      margin-bottom: 15px;
    }

    .community-testimonials-section {
      padding: 40px 20px;
      background-color: #f9f9f9;
    }

    .community-testimonials-section h2 {
      text-align: center;
      color: var(--secondary-black-color);
      margin-bottom: 30px;
      font-size: 1.8rem;
    }

    .testimonial-grid-layout {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 20px;
      max-width: 800px;
      margin: 0 auto;
    }

    .testimonial-card-item {
      background-color: white;
      padding: 25px;
      border-radius: 8px;
      box-shadow: 0 3px 15px rgba(0,0,0,0.05);
      position: relative;
      border-left: 0px solid var(--primary-green-color);
    }

    .testimonial-card-item:before {
      content: """;
      position: absolute;
      top: 15px;
      left: 15px;
      font-size: 4rem;
      color: rgba(0,0,0,0.05);
      font-family: serif;
      line-height: 1;
    }

    .testimonial-card-item p {
      margin-bottom: 15px;
      font-style: italic;
      position: relative;
      z-index: 1;
    }

    .testimonial-card-item .author-name {
      font-weight: 700;
      color: var(--secondary-black-color);
    }

    .testimonial-card-item .author-info {
      font-size: 0.9rem;
      color: var(--gray-text-color);
    }

    .cta-community-join-section {
      padding: 50px 20px;
      text-align: center;
      background: linear-gradient(135deg, var(--primary-green-color) 0%, var(--primary-dark-green-color) 100%);
      color: var(--text-on-dark-background);
    }

    .cta-community-join-section h2 {
      margin-bottom: 20px;
      font-size: 2rem;
    }

    .cta-community-join-section p {
      max-width: 600px;
      margin: 0 auto 25px;
      font-size: 1.1rem;
    }

    .community-join-button-style {
      display: inline-block;
      background-color: var(--secondary-black-color);
      color: var(--text-on-dark-background);
      padding: 15px 40px;
      text-decoration: none;
      font-weight: 700;
      border-radius: 50px;
      margin-top: 10px;
      transition: all 0.3s;
      font-size: 1.1rem;
      border: 2px solid var(--secondary-black-color);
      cursor: pointer;
    }

    .community-join-button-style:hover {
      background-color: transparent;
      color: var(--secondary-black-color);
      border-color: var(--secondary-black-color);
    }

    .risk-notice-acknowledge-box {
      margin-top: 20px;
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
    }

    .footer-legal-disclaimer-area {
      text-align: center;
      padding: 25px 20px;
      font-size: 0.8rem;
      color: var(--gray-text-color);
      background-color: var(--light-background-color);
    }

    .footer-legal-disclaimer-area .disclaimer-content-wrapper {
      max-width: 700px;
      margin: 0 auto;
    }

    .legal-detail-panel {
      display: none;
      text-align: left;
      background: #fff;
      border: 1px solid #ddd;
      border-radius: 6px;
      padding: 20px;
      margin: 15px auto 0;
      font-size: 0.85rem;
      line-height: 1.7;
      color: var(--dark-text-color);
      max-width: 700px;
    }

    .legal-detail-panel p {
      margin: 0 0 12px;
    }

    .legal-detail-panel p:last-child {
      margin-bottom: 0;
    }

    .legal-toggle-link {
      display: inline-block;
      margin: 10px 12px 0;
      color: var(--primary-dark-green-color);
      font-weight: 600;
      text-decoration: underline;
      cursor: pointer;
      font-size: 0.85rem;
    }

    .legal-toggle-link:hover {
      color: var(--primary-green-color);
    }

    @media (max-width: 600px) {
      .community-header-section h1 {
        font-size: 1.8rem;
      }
      .cta-community-join-section h2 {
        font-size: 1.6rem;
      }
    }

    /* ctaBtn: 屏幕底部固定悬浮按钮(移植自参考版本) */
    .btn-more {
      display: inline-block;
      background: linear-gradient(135deg, #2d6a4f, #1e4a3a);
      color: #fffef7;
      font-size: 1.3rem;
      font-weight: 600;
      font-family: inherit;
      padding: 1rem 2.2rem;
      border-radius: 60px;
      text-decoration: none;
      letter-spacing: 0.05em;
      box-shadow: 0 8px 18px rgba(30, 74, 58, 0.4);
      transition: all 0.25s ease;
      border: none;
      cursor: pointer;
      animation: gentleBounce 1.2s ease-in-out infinite;
      transform-origin: center;
      will-change: transform;
      position: fixed;
      bottom: 1.2rem;
      left: 50%;
      z-index: 1000;
      max-width: calc(100vw - 2rem);
      text-align: center;
    }

    .btn-more:hover {
      animation-play-state: paused;
      background: linear-gradient(135deg, #40916c, #2d6a4f);
      transform: translateX(-50%) translateY(-3px);
      box-shadow: 0 14px 24px rgba(30, 74, 58, 0.5);
    }

    .btn-more:active {
      transform: translateX(-50%) translateY(2px);
      transition: 0.05s;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    }

    /* 弹跳动画需与 translateX(-50%) 居中定位共存 */
    @keyframes gentleBounce {
      0%, 100% {
        transform: translateX(-50%) translateY(0px);
        animation-timing-function: ease-out;
      }
      40% {
        transform: translateX(-50%) translateY(-6px);
        animation-timing-function: ease-in;
      }
      65% {
        transform: translateX(-50%) translateY(-3px);
        animation-timing-function: ease-out;
      }
      85% {
        transform: translateX(-50%) translateY(-1px);
      }
    }

    @media (max-width: 640px) {
      .btn-more {
        font-size: 1.1rem;
        padding: 0.8rem 1.8rem;
      }
    }

    @media (max-width: 480px) {
      .btn-more {
        padding: 0.7rem 1.5rem;
        font-size: 1rem;
      }
    }