:root {
      --primary: #8B5A2B;
      --secondary: #556B2F;
      --accent: #DAA520;
      --light: #F8F4E3;
      --dark: #3A2718;
      --gray: #E5E1D1;
      --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'Poppins', sans-serif;
      color: var(--dark);
      background-color: #fcfaf5;
      line-height: 1.6;
    }

    .container {
      max-width: 1400px; /* 扩大容器宽度以适应3列 */
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Solutions Section */
    .solutions {
      padding: 100px 0;
      position: relative;
    }

    .solutions::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background:
        radial-gradient(circle at 20% 30%, rgba(139, 90, 43, 0.05) 0%, transparent 30%),
        radial-gradient(circle at 80% 70%, rgba(85, 107, 47, 0.05) 0%, transparent 30%);
      z-index: -1;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 70px;
    }

    .section-title {
      font-family: 'Playfair Display', serif;
      font-size: clamp(2.2rem, 5vw, 3.5rem);
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 20px;
      position: relative;
      display: inline-block;
    }

    .section-title::after {
      content: '';
      position: absolute;
      bottom: -15px;
      left: 50%;
      transform: translateX(-50%);
      width: 120px;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
    }

    .section-subtitle {
      font-size: clamp(1rem, 2vw, 1.2rem);
      color: #6c6c6c;
      margin-top: 30px;
    }

    /* 3-Column Grid System */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(300px, 1fr));
      gap: 30px;
    }

    @media (max-width: 1200px) {
      .solutions-grid {
        grid-template-columns: repeat(2, minmax(300px, 1fr));
      }
    }

    @media (max-width: 768px) {
      .solutions-grid {
        grid-template-columns: 1fr;
      }
    }

    /* Card Styles */
    .solution-card {
      background: white;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 15px 50px rgba(0, 0, 0, 0.08);
      transition: var(--transition);
      height: 100%;
    }

    .solution-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 25px 60px rgba(0, 0, 0, 0.12);
    }

    .card-header {
      padding: 30px;
      background: linear-gradient(135deg, #fefefe, #f8f8f8);
      border-bottom: 1px solid var(--gray);
    }

    .card-icon {
      width: 70px;
      height: 70px;
      border-radius: 50%;
      background: linear-gradient(135deg, rgba(139, 90, 43, 0.1), rgba(85, 107, 47, 0.1));
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }

    .card-icon i {
      font-size: 28px;
      color: var(--primary);
    }

    .card-title {
      font-family: 'Playfair Display', serif;
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 15px;
    }

    .card-title::after {
      content: '';
      display: block;
      width: 40px;
      height: 3px;
      background: var(--accent);
      margin-top: 10px;
    }

    .card-description {
      color: #666;
      font-size: 0.95rem;
      margin-top: 15px;
    }

    .card-body {
      padding: 25px 30px;
    }

    .features-list {
      list-style: none;
    }

    .feature-item {
      display: flex;
      align-items: flex-start;
      margin-bottom: 12px;
      padding-bottom: 12px;
      border-bottom: 1px dashed #eee;
    }

    .feature-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(139, 90, 43, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-right: 12px;
      flex-shrink: 0;
    }

    .feature-icon i {
      font-size: 10px;
      color: var(--primary);
    }

    .feature-text {
      color: #555;
      font-size: 0.95rem;
    }

    .card-footer {
      padding: 0 30px 30px;
    }

    .solution-btn {
      display: inline-flex;
      align-items: center;
      padding: 12px 30px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      color: white;
      border: none;
      border-radius: 8px;
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
    }

    .solution-btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 8px 25px rgba(139, 90, 43, 0.3);
    }

    .solution-btn i {
      margin-left: 8px;
      transition: var(--transition);
    }

    .solution-btn:hover i {
      transform: translateX(5px);
    }

    /* Decorative Elements */
    .decor-element {
      position: absolute;
      font-size: 10rem;
      color: var(--primary);
      opacity: 0.05;
      z-index: -1;
    }

    .decor-1 {
      top: 10%;
      left: 5%;
      transform: rotate(-15deg);
    }

    .decor-2 {
      bottom: 10%;
      right: 5%;
      transform: rotate(15deg);
    }