/* roulang page: index */
:root {
      --bs-primary: #1A5F4A;
      --bs-primary-rgb: 26, 95, 74;
      --color-primary: #1A5F4A;
      --color-accent: #F29E38;
      --color-bg: #F9FAFB;
      --color-white: #FFFFFF;
      --color-text: #1F2937;
      --color-text-muted: #6B7280;
      --color-border: #E5E7EB;
      --color-positive: #10B981;
      --color-negative: #EF4444;
      --color-primary-light: rgba(26, 95, 74, 0.08);
      --color-primary-soft: #ECFDF5;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
      --shadow-lg: 0 20px 40px rgba(0,0,0,0.08);
      --radius-card: 12px;
      --radius-form: 16px;
      --radius-btn: 8px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--color-bg);
      color: var(--color-text);
      line-height: 1.75;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4, h5, h6 {
      font-weight: 600;
      line-height: 1.3;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

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

    /* 按钮覆盖 */
    .btn-primary {
      background-color: var(--color-primary);
      border-color: var(--color-primary);
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      font-weight: 500;
      transition: all 0.2s ease;
      color: white;
    }
    .btn-primary:hover, .btn-primary:focus {
      background-color: #134B3C;
      border-color: #134B3C;
      box-shadow: 0 4px 12px rgba(26,95,74,0.3);
    }
    .btn-outline-primary {
      border: 1.5px solid var(--color-primary);
      color: var(--color-primary);
      background: transparent;
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      font-weight: 500;
      transition: all 0.2s ease;
    }
    .btn-outline-primary:hover {
      background-color: var(--color-primary-light);
      border-color: var(--color-primary);
      color: var(--color-primary);
    }
    .btn-accent {
      background-color: var(--color-accent);
      border-color: var(--color-accent);
      color: #1F2937;
      font-weight: 600;
      border-radius: var(--radius-btn);
      transition: 0.2s;
    }
    .btn-accent:hover {
      background-color: #e0881f;
      border-color: #e0881f;
      color: #1F2937;
    }

    /* 导航栏 SaaS 命令栏风格 */
    .navbar-custom {
      height: 64px;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid #F3F4F6;
      display: flex;
      align-items: center;
      position: sticky;
      top: 0;
      z-index: 1020;
      padding: 0 24px;
    }
    .navbar-custom .logo {
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--color-primary);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .navbar-custom .logo i {
      font-size: 1.8rem;
      color: var(--color-accent);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
      margin-left: 3rem;
      flex: 1;
    }
    .nav-links a {
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--color-text);
      transition: color 0.2s;
      white-space: nowrap;
    }
    .nav-links a:hover {
      color: var(--color-primary);
    }
    .search-box {
      background: #F3F4F6;
      border-radius: 20px;
      padding: 6px 16px;
      display: flex;
      align-items: center;
      gap: 6px;
      width: 200px;
      margin-right: 16px;
      color: #6B7280;
      font-size: 0.9rem;
    }
    .search-box i {
      font-size: 0.9rem;
    }
    .search-box span {
      flex:1;
      color: #9CA3AF;
    }
    .navbar-toggler {
      border: none;
    }
    @media (max-width: 991px) {
      .nav-links, .search-box {
        display: none;
      }
      .navbar-custom {
        justify-content: space-between;
      }
    }

    /* 板块间距 */
    section {
      padding: 80px 0;
    }

    /* Hero */
    .hero-bg {
      background-image: radial-gradient(circle at 20% 30%, rgba(26,95,74,0.03) 0%, transparent 40%);
      min-height: 90vh;
      display: flex;
      align-items: center;
    }
    .hero-title {
      font-size: 3rem;
      font-weight: 700;
      line-height: 1.2;
      color: #1F2937;
    }
    @media (max-width: 768px) {
      .hero-title {
        font-size: 2.2rem;
      }
      section {
        padding: 60px 0;
      }
    }

    /* 指标卡片 */
    .metric-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      border-top: 3px solid var(--color-primary);
      transition: all 0.25s ease;
      min-height: 140px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .metric-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .metric-number {
      font-size: 2.25rem;
      font-weight: 700;
      color: var(--color-primary);
    }
    .metric-label {
      color: var(--color-text-muted);
      font-size: 0.9rem;
      margin-top: 4px;
    }
    .trend-up {
      color: var(--color-positive);
      font-weight: 600;
    }
    .trend-down {
      color: var(--color-negative);
      font-weight: 600;
    }

    /* 服务矩阵 */
    .service-wide {
      background: white;
      border-radius: var(--radius-card);
      padding: 24px;
      display: flex;
      gap: 20px;
      align-items: center;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s;
      border: 1px solid var(--color-border);
      margin-bottom: 24px;
    }
    .service-wide:hover {
      border-color: var(--color-primary);
      box-shadow: var(--shadow-md);
    }
    .service-standard {
      background: white;
      border-radius: var(--radius-card);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--color-border);
      transition: 0.2s;
      height: 100%;
    }
    .service-standard:hover {
      border-color: var(--color-primary);
      transform: translateY(-4px);
    }
    .icon-circle {
      width: 64px;
      height: 64px;
      background: var(--color-primary-light);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-primary);
      font-size: 1.8rem;
    }

    /* 对比区块 */
    .compare-before {
      background: #F9FAFB;
      border-radius: var(--radius-card);
      padding: 28px;
    }
    .compare-after {
      background: #ECFDF5;
      border-radius: var(--radius-card);
      padding: 28px;
    }
    .vs-badge {
      width: 48px;
      height: 48px;
      background: var(--color-primary);
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }

    /* FAQ 手风琴自定义 */
    .accordion-button:not(.collapsed) {
      background-color: white;
      color: var(--color-primary);
      box-shadow: none;
      font-weight: 600;
    }
    .accordion-button:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px rgba(26,95,74,0.15);
    }
    .accordion-item {
      border: 1px solid var(--color-border);
      border-radius: 8px;
      margin-bottom: 12px;
    }

    /* 表单 */
    .form-control {
      border-radius: 8px;
      border: 1px solid #D1D5DB;
      padding: 12px 16px;
    }
    .form-control:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px rgba(26,95,74,0.1);
    }

    /* Footer */
    .footer-dark {
      background: #1F2937;
      color: #D1D5DB;
      padding: 48px 0 24px;
    }
    .footer-dark a {
      color: #D1D5DB;
    }
    .footer-dark a:hover {
      color: white;
    }