:root {
      --primary: #000000;
      --text: #1a1a1a;
      --light-bg: #f8f9fa;
      --gray: #6b7280;
    }

    body {
      font-family: 'Open Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      line-height: 1.7;
      margin: 0;
      color: var(--text);
      font-weight: 400;
      font-size: 17px;
      letter-spacing: -0.01em;
    }

    section {
      padding: 80px 10%;
      max-width: 1400px;
      margin: 0 auto;
      box-sizing: border-box;
    }

    h1, h2, h3 {
      margin-bottom: 1.2em;
      font-weight: 700;
      letter-spacing: -0.01em;
      line-height: 1.2;
    }

    h1 {
      font-size: clamp(2.2rem, 5vw, 3rem);
      font-weight: 700;
    }

    h2 {
      font-size: clamp(1.7rem, 3.5vw, 2rem);
      font-weight: 600;
      position: relative;
      padding-bottom: 0.6em;
    }

    h2:after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 50px;
      height: 3px;
      background: #000;
    }

    h3 {
      font-size: 1.45rem;
      font-weight: 600;
      margin-top: 2em;
      margin-bottom: 1em;
    }

    p {
      margin-bottom: 1.5em;
      color: #333;
      font-size: 1.05rem;
    }

    .hero p,
    .cta p {
      font-size: 1.2rem;
      max-width: 900px;
      margin: 0 auto;
      color: #f0f0f0;
      text-shadow: 0 2px 8px rgba(0,0,0,0.6);
      line-height: 1.55;
      hyphens: auto;
      opacity: 1;
    }

    ul {
      margin: 1.2em 0 1.8em 1.4em;
      padding-left: 0;
      list-style: none;
    }

     .global_mode_customize ul li {
      position: relative;
      margin-bottom: 1.2em;
      padding-left: 1.6em;
      color: #444;
      font-weight: 400;
    }

    .global_mode_customize ul li:before {
      content: "•";
      position: absolute;
      left: 0;
      color: #000;
      font-size: 1.5em;
      line-height: 1;
    }

    .images {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      margin-top: 24px;
      box-sizing: border-box;
    }

    .images img {
      max-width: 550px;
      height: auto;
      border-radius: 10px;
      border: 1px solid #e5e5e5;
      box-shadow: 0 6px 18px rgba(0,0,0,0.10);
      transition: transform 0.3s ease;
    }

    .images img:hover {
      transform: scale(1.03);
    }

    /* 移动端优化：图片更小，不超出灰色板块，左右 margin 完全对称 */
    @media (max-width: 768px) {
      section {
        padding: 50px 5%;
      }

      .images {
        gap: 12px;
        margin: 16px auto;                 /* 上下 margin 居中，左右 auto 对称 */
        justify-content: center;
        padding: 0 8%;                     /* 左右对称留白更大，确保不贴边 */
        max-width: 100%;                   /* 强制不超出父容器（灰色板块） */
        box-sizing: border-box;
      }

      .images img {
        max-width: 70vw;                   /* 进一步缩小到70vw，视觉更合适 */
        max-height: 45vh;                  /* 高度上限更严格，避免竖向溢出 */
        object-fit: contain;
        margin: 0 auto;                    /* 每张图片左右自动对称居中 */
        display: block;
      }

      h1 {
        font-size: clamp(1.8rem, 8vw, 2.5rem);
      }

      h2 {
        font-size: clamp(1.5rem, 6vw, 2rem);
      }

      h3 {
        font-size: 1.3rem;
      }

      .cta {
        padding: 80px 8%;
      }

      button {
        padding: 14px 40px;
        font-size: 1rem;
      }
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 2rem;
    }

    .card {
      padding: 2rem;
      border: 1px solid #e5e5e5;
      border-radius: 12px;
      background: #fff;
      transition: all 0.25s ease;
    }

    .card:hover {
      border-color: #ccc;
      transform: translateY(-4px);
      box-shadow: 0 12px 24px rgba(0,0,0,0.05);
    }

    .highlight {
      background: var(--light-bg);
    }

    .process-step {
      margin-bottom: 2.5rem;
      padding-left: 3.5rem;
      position: relative;
    }

    .process-step h3 {
      margin-top: 0;
      font-size: 1.35rem;
      font-weight: 600;
    }

    .process-step:before {
      content: counter(step);
      counter-increment: step;
      position: absolute;
      left: 0;
      top: 0;
      width: 2.4rem;
      height: 2.4rem;
      background: #000;
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-size: 1.1rem;
    }

    .cta {
      background: #000;
      color: #fff;
      text-align: center;
      padding: 120px 10%;
    }

    .cta h2 {
      font-size: 2.2rem;
      margin-bottom: 1em;
      font-weight: 700;
    }

    .cta p {
      font-size: 1.2rem;
      max-width: 900px;
      margin: 0 auto 4rem;
      opacity: 0.9;
    }

    .cta a {
      display: inline-block;
      margin-top: 2rem;
    }

    button {
      padding: 18px 48px;
      border: none;
      background: #ffffff;
      color: #000000;
      font-size: 1.2rem;
      font-weight: 700;
      border-radius: 50px;
      cursor: pointer;
      transition: all 0.3s ease;
      font-family: 'Open Sans', sans-serif;
    }

    button:hover {
      background: #e8e8e8;
      transform: translateY(-3px);
      box-shadow: 0 8px 24px rgba(0,0,0,0.25);
    }

    .hero {
      background: #000;
      color: #ffffff;
      padding: 120px 8% 100px;
      text-align: center;
    }

    .hero h1 {
      font-size: clamp(2.2rem, 5vw, 3rem);
      font-weight: 700;
      margin-bottom: 0.8em;
      text-shadow: 0 3px 12px rgba(0,0,0,0.7);
      letter-spacing: -0.015em;
    }

    section:has(.process-step) {
      counter-reset: step;
    }