/* roulang page: index */
:root {
      --primary: #1A3C34;
      --primary-dark: #0F2822;
      --accent: #C49A6C;
      --accent-light: rgba(196, 154, 108, 0.1);
      --bg: #FAF8F6;
      --surface: #FFFFFF;
      --gray-light: #E8E3DF;
      --text: #3A3A3A;
      --text-muted: #6B6B6B;
      --text-light: #D0CFCC;
      --border: #E0DCD7;
      --shadow-sm: 0 4px 12px rgba(26, 60, 52, 0.06);
      --shadow-hover: 0 8px 24px rgba(26, 60, 52, 0.12);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-pill: 40px;
      --transition: 0.25s ease;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Inter", system-ui, -apple-system, sans-serif;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    /* 自定义容器微调 */
    .container-custom {
      max-width: 1280px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    @media (min-width: 1200px) {
      .container-custom {
        padding-left: 40px;
        padding-right: 40px;
      }
    }

    /* 顶部信息条 */
    .top-bar {
      background: #F4F1ED;
      font-size: 12px;
      height: 36px;
      display: flex;
      align-items: center;
      color: var(--text-muted);
    }
    .top-bar .domain {
      font-weight: 500;
      color: var(--primary);
      letter-spacing: 0.3px;
    }
    .top-bar .lang-switch {
      color: var(--primary);
      font-weight: 500;
      margin-left: 12px;
      cursor: pointer;
    }
    .top-bar a {
      color: var(--primary);
      font-weight: 500;
    }

    /* 主导航 */
    .main-header {
      background: var(--surface);
      height: 72px;
      box-shadow: 0 1px 0 rgba(0,0,0,0.04);
      position: sticky;
      top: 0;
      z-index: 1020;
      backdrop-filter: blur(8px);
      background: rgba(255,255,255,0.92);
    }
    .navbar-brand-custom {
      font-weight: 700;
      font-size: 1.8rem;
      color: var(--primary);
      letter-spacing: 1px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .navbar-brand-custom i {
      font-size: 2rem;
      color: var(--accent);
    }
    .nav-link-anchor {
      color: var(--text) !important;
      font-weight: 500;
      margin: 0 4px;
      padding: 0.5rem 0.8rem !important;
      position: relative;
      transition: color var(--transition);
    }
    .nav-link-anchor::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0.8rem;
      right: 0.8rem;
      height: 2px;
      background: var(--accent);
      transform: scaleX(0);
      transition: transform var(--transition);
      transform-origin: left;
    }
    .nav-link-anchor:hover {
      color: var(--primary) !important;
    }
    .nav-link-anchor:hover::after,
    .nav-link-anchor.active::after {
      transform: scaleX(1);
    }
    .nav-link-anchor.active {
      font-weight: 700;
      color: var(--primary) !important;
    }
    .navbar-toggler {
      border: none;
      color: var(--primary);
    }
    .navbar-toggler:focus {
      box-shadow: none;
    }

    /* 按钮系统 */
    .btn-primary-custom {
      background: var(--primary);
      color: white;
      border-radius: var(--radius-pill);
      padding: 12px 28px;
      font-weight: 600;
      border: none;
      transition: all var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .btn-primary-custom:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
      color: white;
    }
    .btn-outline-accent {
      border: 2px solid var(--accent);
      color: var(--primary);
      background: transparent;
      border-radius: var(--radius-pill);
      padding: 10px 28px;
      font-weight: 600;
      transition: all var(--transition);
    }
    .btn-outline-accent:hover {
      background: var(--accent-light);
      border-color: var(--accent);
      color: var(--primary);
    }
    .text-link-accent {
      color: var(--accent);
      font-weight: 600;
      transition: all var(--transition);
    }
    .text-link-accent:hover {
      text-decoration: underline;
      color: var(--accent);
    }

    /* 板块标题 */
    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 1rem;
      line-height: 1.3;
    }
    .section-subtitle {
      color: var(--text-muted);
      font-size: 1.1rem;
      max-width: 700px;
      margin: 0 auto 3rem;
    }
    .decor-line {
      width: 48px;
      height: 4px;
      background: var(--accent);
      display: inline-block;
      margin-bottom: 1.25rem;
      border-radius: 2px;
    }

    /* Hero */
    .hero-section {
      min-height: 90vh;
      background: linear-gradient(135deg, #FAF8F6 0%, #F4F1ED 100%);
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
    }
    .hero-badge {
      background: var(--accent-light);
      color: var(--primary);
      font-weight: 700;
      padding: 6px 16px;
      border-radius: 20px;
      display: inline-block;
      font-size: 0.9rem;
      letter-spacing: 0.5px;
    }

    /* 卡片系统 */
    .capability-card {
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--gray-light);
      transition: all var(--transition);
      height: 100%;
      text-align: left;
    }
    .capability-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: var(--accent);
    }
    .capability-icon {
      font-size: 2.5rem;
      color: var(--accent);
      margin-bottom: 1.5rem;
      display: inline-block;
    }
    .card-title {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 0.75rem;
    }
    .card-desc {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
    }

    /* 场景方案 */
    .scene-block {
      background: var(--surface);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .scene-content {
      padding: 2.5rem;
    }
    .scene-list {
      list-style: none;
      padding-left: 0;
    }
    .scene-list li {
      margin-bottom: 0.6rem;
      display: flex;
      align-items: baseline;
    }
    .scene-list li i {
      color: var(--accent);
      margin-right: 10px;
      font-size: 0.9rem;
    }

    /* 案例卡片 */
    .case-card {
      background: var(--surface);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      box-shadow: var(--shadow-sm);
      border-left: 4px solid var(--accent);
      transition: var(--transition);
    }
    .case-number {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }
    .industry-tag {
      background: var(--accent-light);
      color: var(--primary);
      font-weight: 600;
      font-size: 0.8rem;
      padding: 4px 12px;
      border-radius: 20px;
    }

    /* 合作模式卡 */
    .pricing-card {
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 2rem 1.8rem;
      border: 1px solid var(--gray-light);
      transition: all var(--transition);
      height: 100%;
    }
    .pricing-card.recommended {
      border: 2px solid var(--accent);
      box-shadow: var(--shadow-hover);
      position: relative;
    }
    .badge-recommend {
      background: var(--accent);
      color: white;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 20px;
      position: absolute;
      top: -12px;
      right: 20px;
    }
    .price-tier {
      font-weight: 800;
      color: var(--primary);
      font-size: 1.6rem;
    }

    /* FAQ */
    .accordion-faq .accordion-button {
      font-weight: 600;
      color: var(--primary);
      background: white;
      box-shadow: none;
      padding: 1rem 0;
      border-bottom: 1px solid var(--gray-light);
    }
    .accordion-faq .accordion-button:not(.collapsed) {
      background: transparent;
      color: var(--primary);
      border-left: 4px solid var(--primary);
      padding-left: 1rem;
    }
    .accordion-faq .accordion-body {
      background: #FAF8F6;
      padding: 1.2rem 0;
      color: var(--text);
    }

    /* CTA横幅 */
    .cta-banner {
      background: linear-gradient(135deg, #1A3C34 0%, #0F2822 100%);
      border-radius: var(--radius-lg);
      padding: 4rem 2rem;
      position: relative;
      overflow: hidden;
    }
    .cta-banner::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.08;
    }

    /* 页脚 */
    .footer-main {
      background: var(--primary);
      color: var(--text-light);
    }
    .footer-title {
      color: var(--accent);
      font-weight: 700;
      margin-bottom: 1.2rem;
    }
    .footer-link {
      color: var(--text-light);
      transition: color var(--transition);
    }
    .footer-link:hover {
      color: var(--accent);
    }
    .social-icon {
      font-size: 1.3rem;
      margin-right: 12px;
      color: var(--text-light);
      transition: color var(--transition);
    }
    .social-icon:hover {
      color: var(--accent);
    }
    .copyright-bar {
      background: #0F2822;
      font-size: 0.8rem;
    }

    @media (max-width: 768px) {
      .section-title {
        font-size: 1.8rem;
      }
      .hero-section {
        text-align: center;
      }
    }