/* roulang page: index */
:root {
      --primary-green: #1B8E3F;
      --deep-green: #0E5E2A;
      --bg-warm: #F7F5F0;
      --accent-yellow: #F5A623;
      --charcoal: #2C2C2C;
      --light-gray: #E0DCD3;
      --card-bg: #FFFFFF;
      --card-shadow: 0 2px 12px rgba(0,0,0,0.06);
      --card-hover-shadow: 0 8px 24px rgba(0,0,0,0.12);
      --border-radius-card: 12px;
      --border-radius-btn: 8px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      --transition-smooth: 0.25s ease;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--charcoal);
      line-height: 1.8;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }

    h1, h2, h3, h4, h5, h6 {
      font-weight: 700;
      color: var(--charcoal);
    }

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

    a:hover {
      color: var(--primary-green);
    }

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

    .container-custom {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 按钮系统 */
    .btn-primary-custom {
      background-color: var(--primary-green);
      color: white;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--border-radius-btn);
      border: none;
      display: inline-block;
      transition: background-color var(--transition-smooth);
    }
    .btn-primary-custom:hover {
      background-color: var(--deep-green);
      color: white;
    }
    .btn-outline-custom {
      background: transparent;
      border: 2px solid var(--primary-green);
      color: var(--primary-green);
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--border-radius-btn);
      display: inline-block;
      transition: all var(--transition-smooth);
    }
    .btn-outline-custom:hover {
      background-color: var(--primary-green);
      color: white;
    }
    .btn-accent-custom {
      background-color: var(--accent-yellow);
      color: var(--deep-green);
      font-weight: 700;
      padding: 16px 40px;
      border-radius: var(--border-radius-btn);
      border: none;
      font-size: 1.1rem;
      display: inline-block;
      transition: background-color var(--transition-smooth);
    }
    .btn-accent-custom:hover {
      background-color: #E09515;
      color: var(--deep-green);
    }

    /* 导航分屏布局 */
    .navbar-custom {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1030;
      background-color: transparent;
      pointer-events: none;
      height: 100vh;
    }
    .nav-left, .nav-right {
      pointer-events: auto;
    }
    .nav-left {
      width: 50%;
      height: 100vh;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      position: relative;
    }
    .nav-left::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(14,94,42,0.7) 0%, rgba(27,142,63,0.3) 100%);
    }
    .nav-right {
      width: 50%;
      background-color: rgba(247,245,240,0.98);
      backdrop-filter: blur(8px);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: flex-start;
      padding: 2rem 3rem;
      height: 100vh;
    }
    .logo-area {
      margin-bottom: 2rem;
    }
    .logo-text {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary-green);
      letter-spacing: 2px;
    }
    .nav-channels {
      list-style: none;
      padding: 0;
      margin: 0 0 2rem 0;
    }
    .nav-channels li {
      margin-bottom: 1rem;
    }
    .nav-channels a {
      font-size: 1.2rem;
      font-weight: 600;
      color: var(--charcoal);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .nav-channels a::before {
      content: '';
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: var(--accent-yellow);
      border-radius: 50%;
      margin-right: 0.5rem;
    }
    .nav-channels a:hover {
      color: var(--primary-green);
    }
    .mobile-nav-toggle {
      display: none;
      position: fixed;
      top: 1rem;
      right: 1.5rem;
      z-index: 1050;
      background: var(--primary-green);
      color: white;
      border: none;
      font-size: 1.5rem;
      width: 45px;
      height: 45px;
      border-radius: 8px;
    }
    @media (max-width: 991px) {
      .navbar-custom {
        position: fixed;
        height: auto;
      }
      .nav-left {
        display: none;
      }
      .nav-right {
        width: 100%;
        height: auto;
        padding: 1.5rem;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: rgba(247,245,240,0.98);
        transform: translateY(-100%);
        transition: transform 0.3s ease;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        padding-top: 4rem;
      }
      .nav-right.active {
        transform: translateY(0);
      }
      .mobile-nav-toggle {
        display: block;
      }
      .logo-area {
        margin-bottom: 1.5rem;
      }
      .nav-channels {
        margin-bottom: 1.5rem;
      }
    }

    /* Hero 分屏区域 */
    .hero-split {
      display: flex;
      min-height: 100vh;
      margin-top: 0;
    }
    .hero-visual {
      width: 50%;
      background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .hero-visual::after {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(14,94,42,0.65);
    }
    .hero-text-overlay {
      position: relative;
      z-index: 2;
      color: white;
      text-align: center;
      padding: 2rem;
    }
    .hero-text-overlay h1 {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.3;
      color: white;
      text-shadow: 0 4px 12px rgba(0,0,0,0.4);
      margin-bottom: 1rem;
    }
    .hero-text-overlay .sub {
      font-size: 1.25rem;
      font-weight: 400;
      opacity: 0.9;
    }
    .hero-content {
      width: 50%;
      background-color: var(--bg-warm);
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 3rem;
    }
    .brand-desc {
      font-size: 1.1rem;
      margin-bottom: 2rem;
      color: var(--charcoal);
    }
    @media (max-width: 991px) {
      .hero-split {
        flex-direction: column;
      }
      .hero-visual {
        width: 100%;
        height: 50vh;
      }
      .hero-content {
        width: 100%;
        padding: 2rem 1.5rem;
      }
    }

    /* 区块标题装饰 */
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--deep-green);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 1rem;
      margin-bottom: 2.5rem;
    }
    .section-title::before,
    .section-title::after {
      content: '';
      width: 40px;
      height: 2px;
      background-color: var(--accent-yellow);
    }

    /* 功能卡片 */
    .feature-card {
      background: var(--card-bg);
      border-radius: var(--border-radius-card);
      padding: 2rem;
      box-shadow: var(--card-shadow);
      transition: all var(--transition-smooth);
      height: 100%;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-hover-shadow);
    }
    .icon-circle {
      width: 64px;
      height: 64px;
      background-color: rgba(27,142,63,0.15);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1rem;
      transition: background-color var(--transition-smooth);
    }
    .feature-card:hover .icon-circle {
      background-color: var(--accent-yellow);
    }

    /* 场景区块 */
    .scene-img {
      border-radius: 12px;
      box-shadow: var(--card-shadow);
      max-width: 500px;
      width: 100%;
    }

    /* 案例卡片 */
    .case-card {
      background: transparent;
      border: 1px solid var(--light-gray);
      border-radius: 8px;
      padding: 1.5rem;
      transition: all var(--transition-smooth);
      height: 100%;
    }
    .case-card:hover {
      border-color: var(--primary-green);
      box-shadow: var(--card-shadow);
    }
    .client-logo-placeholder {
      width: 48px;
      height: 48px;
      background: #f0f0f0;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: var(--charcoal);
    }

    /* 价格卡片 */
    .pricing-card {
      background: white;
      border-radius: var(--border-radius-card);
      padding: 2rem;
      box-shadow: var(--card-shadow);
      position: relative;
    }
    .pricing-card.popular {
      border: 2px solid var(--accent-yellow);
    }
    .badge-popular {
      background: var(--accent-yellow);
      color: var(--deep-green);
      font-weight: 700;
      font-size: 0.8rem;
      padding: 0.3rem 1rem;
      border-radius: 20px;
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
    }
    .price-number {
      font-size: 3rem;
      font-weight: 800;
      color: var(--primary-green);
    }

    /* FAQ */
    .accordion-button {
      font-weight: 600;
      background-color: var(--bg-warm);
      color: var(--charcoal);
      box-shadow: none;
    }
    .accordion-button:not(.collapsed) {
      background-color: white;
      color: var(--primary-green);
    }
    .accordion-item {
      border: none;
      border-bottom: 1px solid var(--light-gray);
    }

    /* CTA横幅 */
    .cta-banner {
      background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      position: relative;
    }
    .cta-banner::after {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(14,94,42,0.8);
    }

    /* 页脚 */
    .footer-custom {
      background: var(--deep-green);
      color: #f0f0f0;
    }
    .social-icon {
      width: 36px;
      height: 36px;
      border: 1px solid #f0f0f0;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #f0f0f0;
      transition: all var(--transition-smooth);
    }
    .social-icon:hover {
      background: var(--accent-yellow);
      border-color: var(--accent-yellow);
      color: var(--deep-green);
    }