/* roulang page: index */
:root {
      --primary-green: #0A8F3C;
      --primary-orange: #F15A24;
      --dark-moss: #0B2B1A;
      --warm-bg: #F7F8FA;
      --text-dark: #1E1E1E;
      --text-mid: #5A5A5A;
      --text-light: #9CA3AF;
      --border-light: #E5E7EB;
      --card-bg: #FFFFFF;
      --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.04);
      --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --transition: all 0.25s ease;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      background-color: var(--warm-bg);
      color: var(--text-dark);
      margin: 0;
      line-height: 1.6;
      box-sizing: border-box;
    }

    h1, h2, h3, h4 {
      font-weight: 600;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

    /* 导航 - SaaS命令栏风格 */
    .navbar {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(8px);
      padding: 0 2rem;
      height: 64px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
      display: flex;
      align-items: center;
      position: fixed;
      width: 100%;
      top: 0;
      z-index: 1000;
    }
    .navbar .logo {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--primary-green);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .navbar .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
      margin-left: 2.5rem;
    }
    .navbar .nav-links a {
      color: var(--text-mid);
      font-weight: 500;
      font-size: 0.95rem;
      padding: 0.25rem 0;
      border-bottom: 2px solid transparent;
    }
    .navbar .nav-links a:hover,
    .navbar .nav-links a.active {
      color: var(--primary-green);
      border-bottom-color: var(--primary-green);
    }
    .navbar .right-actions {
      margin-left: auto;
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .search-box {
      background: #F3F4F6;
      border-radius: 20px;
      padding: 0.45rem 1.2rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: var(--text-light);
      font-size: 0.9rem;
    }
    .search-box i {
      font-size: 0.9rem;
    }
    .btn-primary-custom {
      background: var(--primary-green);
      color: white;
      border: none;
      padding: 0.5rem 1.5rem;
      border-radius: 6px;
      font-weight: 600;
      transition: var(--transition);
    }
    .btn-primary-custom:hover {
      background: var(--primary-orange);
    }
    .navbar-toggler {
      border: none;
      color: var(--text-dark);
    }
    @media (max-width: 992px) {
      .navbar .nav-links, .navbar .right-actions .search-box {
        display: none;
      }
      .navbar .right-actions {
        gap: 0.5rem;
      }
      .mobile-menu {
        display: block;
      }
    }
    @media (min-width: 993px) {
      .mobile-menu {
        display: none;
      }
    }

    /* Hero区块 */
    #hero {
      background: radial-gradient(circle at 20% 20%, rgba(10, 143, 60, 0.05) 0%, var(--warm-bg) 70%);
      padding: 120px 0 80px;
    }
    .hero-title {
      font-size: 3rem;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: var(--text-dark);
    }
    .hero-badge {
      background: var(--primary-orange);
      color: white;
      font-weight: 700;
      font-size: 1.8rem;
      padding: 0.25rem 1rem;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-right: 1rem;
    }
    .hero-sub {
      font-size: 1.2rem;
      color: var(--text-mid);
      margin: 1.5rem 0 2rem;
    }
    .btn-outline-green {
      border: 2px solid var(--primary-green);
      color: var(--primary-green);
      background: transparent;
      padding: 0.65rem 1.8rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      transition: var(--transition);
    }
    .btn-outline-green:hover {
      background: var(--primary-green);
      color: white;
    }

    /* 区块标题 */
    .section-title h2 {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--text-dark);
    }
    .section-title p {
      color: var(--text-mid);
    }

    /* 卡片 */
    .feature-card, .scenario-card, .case-card, .pricing-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      height: 100%;
    }
    .feature-card:hover, .scenario-card:hover, .case-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .icon-placeholder {
      width: 64px;
      height: 64px;
      background: var(--primary-green);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 1.8rem;
      margin-bottom: 1.2rem;
      transition: var(--transition);
    }
    .feature-card:hover .icon-placeholder {
      background: var(--primary-orange);
    }

    /* 深色案例区块 */
    .bg-dark-moss {
      background-color: var(--dark-moss);
      color: white;
    }
    .stat-badge {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary-orange);
    }

    /* FAQ手风琴覆盖 */
    .accordion-button:not(.collapsed) {
      background-color: rgba(10, 143, 60, 0.08);
      color: var(--primary-green);
      font-weight: 600;
    }
    .accordion-button:focus {
      box-shadow: none;
    }

    /* CTA横幅 */
    .cta-banner {
      background: linear-gradient(135deg, #0A8F3C 0%, #0CB27A 100%);
      border-radius: var(--radius-lg);
      padding: 3rem;
      color: white;
    }
    .footer {
      background: #1E1E1E;
      color: #ccc;
    }
    .footer a {
      color: #ddd;
    }
    .footer a:hover {
      color: white;
    }
    @media (max-width: 768px) {
      .hero-title {
        font-size: 2rem;
      }
      .section-title h2 {
        font-size: 1.8rem;
      }
    }