/* roulang page: index */
:root {
      /* 主色与辅色 */
      --bs-primary: #0A3D2E;
      --bs-primary-rgb: 10, 61, 46;
      --primary-dark: #072E22;
      --primary-light: #1B6B4A;
      --secondary: #C8A96E;
      --secondary-light: rgba(200,169,110,0.15);
      --secondary-soft: rgba(200,169,110,0.08);
      
      /* 背景与文字 */
      --body-bg: #FBF7F2;
      --body-color: #2C2416;
      --text-muted: #5C4F3A;
      --text-light: #FBF7F2;
      --border-color: #E8E0D5;
      --dark-bg: #0F2922;
      --card-bg: #FFFFFF;
      
      /* 圆角与阴影 */
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-sm: 0 2px 12px rgba(10,61,46,0.06);
      --shadow-md: 0 8px 24px rgba(10,61,46,0.12);
      --shadow-lg: 0 20px 40px rgba(10,61,46,0.18);
      --shadow-button: 0 6px 20px rgba(10,61,46,0.25);
      
      /* 字体 */
      --font-serif: 'Noto Serif SC', 'Source Han Serif SC', serif;
      --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-number: 'Inter', 'SF Pro Display', sans-serif;
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      font-family: var(--font-sans);
      background-color: var(--body-bg);
      color: var(--body-color);
      line-height: 1.75;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }
    
    h1, h2, h3, h4 {
      font-family: var(--font-serif);
      font-weight: 600;
    }
    
    h1 {
      font-size: 2.75rem;
      font-weight: 700;
      line-height: 1.2;
      color: #0A3D2E;
    }
    
    h2 {
      font-size: 2rem;
      font-weight: 600;
      margin-bottom: 1.5rem;
      position: relative;
      display: inline-block;
    }
    
    .section-title {
      text-align: center;
      margin-bottom: 3rem;
    }
    
    .section-title h2 {
      display: inline-block;
      position: relative;
    }
    
    .section-title h2::after {
      content: '';
      position: absolute;
      bottom: -8px;
      left: 50%;
      transform: translateX(-50%);
      width: 60px;
      height: 4px;
      background: linear-gradient(90deg, #C8A96E 0%, #E0C78A 100%);
      border-radius: 2px;
    }
    
    .text-serif {
      font-family: var(--font-serif);
    }
    
    .text-gold {
      color: var(--secondary);
    }
    
    .bg-dark-green {
      background-color: var(--dark-bg);
    }
    
    /* 导航栏 SaaS 命令栏风格 */
    .navbar {
      background: rgba(251,247,242,0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      height: 68px;
      padding: 0;
      transition: all 0.3s ease;
    }
    
    .navbar-brand {
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 1.35rem;
      color: var(--bs-primary) !important;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    
    .logo-icon {
      width: 18px;
      height: 18px;
      background: var(--secondary);
      transform: rotate(45deg);
      border-radius: 2px;
      display: inline-block;
    }
    
    .navbar .nav-link {
      font-weight: 500;
      color: var(--body-color) !important;
      padding: 0.5rem 1rem;
      position: relative;
      transition: color 0.2s;
    }
    
    .navbar .nav-link:hover,
    .navbar .nav-link.active {
      color: var(--bs-primary) !important;
    }
    
    .navbar .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 0;
      height: 2px;
      background: var(--secondary);
      transition: width 0.25s ease;
    }
    
    .navbar .nav-link:hover::after,
    .navbar .nav-link.active::after {
      width: 80%;
    }
    
    .search-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      padding: 0.4rem 1rem;
      font-size: 0.9rem;
      color: var(--body-color);
      width: 180px;
      transition: all 0.2s;
    }
    
    .search-box:focus {
      outline: none;
      border-color: var(--secondary);
      box-shadow: 0 0 0 3px rgba(200,169,110,0.15);
      width: 220px;
    }
    
    .btn-primary-custom {
      background: linear-gradient(135deg, #0A3D2E 0%, #1B6B4A 100%);
      border: none;
      color: white;
      font-weight: 600;
      border-radius: var(--radius-md);
      padding: 0.5rem 1.5rem;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: 0 4px 10px rgba(10,61,46,0.2);
      font-family: var(--font-sans);
    }
    
    .btn-primary-custom:hover {
      background: linear-gradient(135deg, #0F4D3A 0%, #218358 100%);
      transform: translateY(-2px);
      box-shadow: var(--shadow-button);
      color: white;
    }
    
    .btn-outline-custom {
      background: transparent;
      border: 2px solid #0A3D2E;
      color: #0A3D2E;
      font-weight: 600;
      border-radius: var(--radius-md);
      padding: 0.5rem 1.5rem;
      transition: all 0.25s ease;
      font-family: var(--font-sans);
    }
    
    .btn-outline-custom:hover {
      background: #0A3D2E;
      color: white;
    }
    
    .btn-lg-custom {
      padding: 0.75rem 2rem;
      font-size: 1rem;
    }
    
    /* 卡片系统 */
    .card-custom {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      height: 100%;
    }
    
    .card-custom:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--secondary);
    }
    
    .badge-gold {
      background: var(--secondary-light);
      color: #B8934A;
      font-weight: 700;
      border-radius: 20px;
      padding: 0.25rem 1rem;
      font-size: 0.85rem;
      display: inline-block;
    }
    
    .number-badge {
      font-family: var(--font-number);
      font-weight: 800;
      font-size: 2.5rem;
      background: linear-gradient(135deg, #C8A96E 0%, #E0C78A 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1.2;
    }
    
    /* Hero区域 */
    .hero-section {
      padding: 6rem 0 4rem;
      background: linear-gradient(90deg, #FBF7F2 0%, rgba(10,61,46,0.08) 100%);
    }
    
    .hero-image {
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-lg);
      width: 100%;
      height: auto;
      object-fit: cover;
    }
    
    /* 深色数据区块 */
    .stats-section {
      background-color: var(--dark-bg);
      padding: 4rem 0;
    }
    
    .stat-divider {
      width: 1px;
      height: 40px;
      background: rgba(200,169,110,0.3);
    }
    
    /* 图片卡片 */
    .service-img, .case-img {
      height: 200px;
      object-fit: cover;
      border-radius: var(--radius-lg) var(--radius-lg) 0 0;
      width: 100%;
    }
    
    /* 流程步骤 */
    .step-circle {
      width: 48px;
      height: 48px;
      background: var(--bs-primary);
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.5rem;
      margin: 0 auto 1rem;
      font-family: var(--font-number);
    }
    
    .step-connector {
      position: relative;
    }
    
    .step-connector::after {
      content: '';
      position: absolute;
      top: 24px;
      right: -50%;
      width: 100%;
      height: 0;
      border-top: 2px dashed #D4C5A9;
      z-index: -1;
    }
    
    @media (max-width: 767px) {
      .step-connector::after {
        display: none;
      }
    }
    
    /* FAQ手风琴 */
    .accordion-button:not(.collapsed) {
      background-color: var(--secondary-soft);
      color: var(--bs-primary);
      font-weight: 600;
      box-shadow: none;
    }
    
    .accordion-button:focus {
      border-color: var(--secondary);
      box-shadow: 0 0 0 3px rgba(200,169,110,0.15);
    }
    
    .accordion-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md) !important;
      margin-bottom: 0.75rem;
      background: white;
    }
    
    .accordion-button {
      font-weight: 600;
      color: var(--body-color);
    }
    
    /* 表单 */
    .form-control {
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      padding: 0.6rem 1rem;
      font-family: var(--font-sans);
    }
    
    .form-control:focus {
      border-color: #0A3D2E;
      box-shadow: 0 0 0 3px rgba(10,61,46,0.1);
    }
    
    footer {
      background-color: var(--dark-bg);
      color: rgba(251,247,242,0.8);
    }
    
    footer a {
      color: rgba(251,247,242,0.8);
      text-decoration: none;
      transition: color 0.2s;
    }
    
    footer a:hover {
      color: var(--secondary);
    }
    
    @media (max-width: 768px) {
      h1 {
        font-size: 2rem;
      }
      h2 {
        font-size: 1.75rem;
      }
      .hero-section {
        padding: 4rem 0 2rem;
      }
      .navbar {
        height: auto;
      }
    }