:root {
      --primary: #333;
      --primary-light: #333;
      --secondary: #f8f5f0;
      --accent: #d4b48c;
      --text: #333;
      --color000: #fff;
      --light-text: #666;
      --border: #e0d9cf;
      --shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
      --transition: all 0.3s ease;
    }

    .whitebj {
      color: #fff !important;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    .section {
      padding: 80px 0;
    }

    .section-title {
      text-align: center;
      margin-bottom: 50px;
      position: relative;
    }

    .section-title h2 {
      font-size: var(--font44);
      color: var(--color030);
      line-height: var(--line12);
    }

    .section-title .divider {
      width: 80px;
      height: 4px;
      background: var(--primary);
      margin: 0 auto;
      border-radius: 2px;
    }

    .section-title p {
      color: var(--light-text);
      font-size: 1.1rem;
      max-width: 700px;
      margin: 20px auto 0;
    }

    .btn {
      display: inline-block;
      padding: 14px 32px;
      background: var(--primary);
      color: white;
      border: none;
      border-radius: 4px;
      font-size: 1rem;
      font-weight: 600;
      text-decoration: none;
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
      box-shadow: var(--shadow);
    }

    .btn:hover {
      background: var(--primary-light);
      transform: translateY(-3px);
      box-shadow: 0 8px 20px rgba(139, 69, 19, 0.2);
    }

    /* 企业介绍部分 */
    .ys-about-intro {
      /* background: #fff; */
      position: relative;
    }

    .intro-content {
      display: flex;
      flex-wrap: wrap;
      gap: 50px;
      align-items: center;
    }

    .intro-text {
      flex: 1;
      min-width: 300px;
    }

    .intro-text h3 {
      font-size: var(--font32);
      color: var(--color030);
      line-height: var(--line12);
      margin-bottom: 25px;
    }

    .intro-text p {
      margin-bottom: 20px;
      color: #333;
      line-height: var(--line175);
      font-size: var(--font18);
    }

    .intro-stats {
      display: flex;
      gap: 30px;
      margin: 40px 0;
      flex-wrap: wrap;
    }

    .stat-item {
      flex: 1;
      min-width: 150px;
      text-align: center;
      padding: 20px;
      background: #faf9f7;
      border-radius: 8px;
      box-shadow: var(--shadow);
    }

    .stat-item .number {
      font-size: 2.5rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 5px;
    }

    .stat-item .label {
      font-size: 1rem;
      color: var(--light-text);
    }

    .intro-video {
      flex: 1;
      min-width: 300px;
      position: relative;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow);
    }

    .video-container {
      position: relative;
      padding-top: 56.25%; /* 16:9 Aspect Ratio */
      background: linear-gradient(45deg, #f5f2ed, #f0ebe4);
    }

    .video-container img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.9;
    }

    .play-btn {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 60px;
      height: 60px;
      background: rgba(255, 255, 255, 0.9);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: var(--transition);
      z-index: 10;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    .play-btn:hover {
      background: var(--primary);
      transform: translate(-50%, -50%) scale(1.1);
    }

    .play-btn i {
      color: var(--primary);
      font-size: 32px;
      margin-left: 5px;
      transition: var(--transition);
    }

    .play-btn:hover i {
      color: white;
    }

    /* 企业文化部分 */
    .ys-culture {
      background: #0061ae;
      position: relative;
      overflow: hidden;
    }

    .ys-culture::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      /* background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="white"/><path d="M0 0L100 100M100 0L0 100" stroke="%23f5f2ed" stroke-width="0.5"/></svg>'); */
      opacity: 0.5;
      z-index: 0;
    }

    .ys-culture-content {
      position: relative;
      z-index: 2;
    }

    .ys-culture-cards {
      display: flex;
      flex-wrap: wrap;
      gap: 30px;
      justify-content: center;
      margin-top: 40px;
    }

    .ys-culture-card {
      background: white;
      border-radius: 12px;
      padding: 40px 30px;
      text-align: center;
      flex: 1;
      min-width: 300px;
      max-width: 380px;
      box-shadow: var(--shadow);
      transition: var(--transition);
      border: 1px solid var(--border);
      position: relative;
      overflow: hidden;
    }

    .ys-culture-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
    }

    .ys-culture-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 5px;
      /* background: var(--primary); */
      background: #e62129;
    }

    .ys-culture-icon {
      width: 90px;
      height: 90px;
      margin: 0 auto 25px;
      background: #faf7f2;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
    }

    .ys-culture-card:hover .ys-culture-icon {
      background: #e50503;
      transform: scale(1.05);
    }

    .ys-culture-icon i {
      color: #e50503;
      font-size: 36px;
      transition: var(--transition);
    }

    .ys-culture-card:hover .ys-culture-icon i {
      color: white;
    }

    .ys-culture-card h3 {
      font-size: 28px;
      color: var(--primary);
      margin-bottom: 20px;
      font-weight: 700;
    }

    .ys-culture-card p {
      color: var(--color030);
      line-height: var(--line175);
      font-size: var(--font18);
    }

    /* 响应式设计 */
    @media (max-width: 1100px) {
      .section {
        padding: 70px 0;
      }

      .intro-content {
        gap: 40px;
      }

      .ys-culture-cards {
        gap: 25px;
      }
    }

    @media (max-width: 900px) {
      .section-title h2 {
        font-size: 2.4rem;
      }

      .intro-text h3 {
        font-size: 2rem;
      }

      .stat-item .number {
        font-size: 2.2rem;
      }

      .ys-culture-card {
        padding: 35px 25px;
      }
    }

    @media (max-width: 768px) {
      .section {
        padding: 60px 0;
      }

      .section-title h2 {
        font-size: 2.2rem;
      }

      .intro-content {
        flex-direction: column;
      }

      .intro-text,
      .intro-video {
        width: 100%;
      }

      .ys-culture-card {
        min-width: 100%;
        max-width: 500px;
      }
    }

    @media (max-width: 576px) {
      .section {
        padding: 50px 0;
      }

      .section-title h2 {
        font-size: 2rem;
      }

      .section-title p {
        font-size: 1rem;
      }

      .intro-text h3 {
        font-size: 1.8rem;
      }

      .btn {
        padding: 12px 28px;
        font-size: 0.95rem;
      }

      .stat-item {
        min-width: 130px;
        padding: 15px;
      }

      .stat-item .number {
        font-size: 2rem;
      }

      .play-btn {
        width: 60px;
        height: 60px;
      }

      .play-btn i {
        font-size: 28px;
      }

      .ys-culture-icon {
        width: 80px;
        height: 80px;
      }

      .ys-culture-icon i {
        font-size: 32px;
      }

      .ys-culture-card h3 {
        font-size: 1.6rem;
      }
    }

    /* 响应式调整 */
    @media (max-width: 900px) {
      /* nav ul {
                display: none;
            }
             */
      .mobile-menu-btn {
        display: block;
      }

      .footer-content {
        gap: 30px;
      }
    }

    @media (max-width: 576px) {
      .logo h1 {
        font-size: 1.5rem;
      }

      .footer-section {
        min-width: 100%;
      }
    }