/* roulang page: index */
:root {
      --primary: #6C3CE1;
      --primary-light: #8B6BE8;
      --secondary: #FF6B9D;
      --secondary-light: #FF8FB3;
      --bg-light: #F9F7FE;
      --bg-dark: #1A1025;
      --bg-darker: #0F0A1A;
      --text-title: #1E1338;
      --text-body: #4A4060;
      --text-muted: #8C83A3;
      --white: #FFFFFF;
      --card-bg: #FFFFFF;
      --border-light: rgba(108, 60, 225, 0.1);
      --shadow-card: 0 8px 28px rgba(108, 60, 225, 0.08);
      --shadow-hover: 0 18px 36px rgba(108, 60, 225, 0.18);
      --radius-xl: 28px;
      --radius-lg: 24px;
      --radius-md: 16px;
      --radius-pill: 40px;
      --radius-btn: 40px;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
      --transition: all 0.25s ease;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--white);
      color: var(--text-body);
      line-height: 1.5;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }

    h1, h2, h3 {
      font-weight: 700;
      letter-spacing: -0.5px;
      color: var(--text-title);
    }

    h1 {
      font-size: clamp(40px, 6vw, 56px);
      line-height: 1.2;
      margin-bottom: 0.5em;
    }

    h2 {
      font-size: clamp(32px, 5vw, 40px);
      margin-bottom: 0.5em;
    }

    h3 {
      font-size: 22px;
      margin-bottom: 0.4em;
    }

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

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

    /* 浮动Dock导航 */
    .dock-nav {
      position: fixed;
      top: 16px;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 40px);
      max-width: 1100px;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-radius: 40px;
      padding: 10px 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
      z-index: 50;
      border: 1px solid rgba(255, 255, 255, 0.5);
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--primary);
      letter-spacing: -0.3px;
    }

    .logo-icon {
      font-size: 1.8rem;
      color: var(--secondary);
    }

    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-body);
    }

    .nav-links a {
      position: relative;
      padding: 6px 0;
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 6px;
      height: 6px;
      background: var(--primary);
      border-radius: 50%;
      opacity: 0;
      transition: 0.2s;
    }

    .nav-links a:hover {
      color: var(--primary);
    }

    .nav-links a:hover::after {
      opacity: 1;
    }

    .btn-pill {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: white;
      border: none;
      padding: 10px 24px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 18px rgba(108, 60, 225, 0.25);
      white-space: nowrap;
    }

    .btn-pill:hover {
      filter: brightness(1.1);
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(108, 60, 225, 0.35);
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.6rem;
      color: var(--text-title);
      cursor: pointer;
    }

    /* Hero */
    #hero {
      background: radial-gradient(circle at 30% 40%, #2D1B4E, #0F0A1A);
      padding: 140px 0 100px;
      position: relative;
      overflow: hidden;
      color: white;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

    .hero-text h1 {
      background: linear-gradient(135deg, #E0C3FC, var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-text p {
      font-size: 1.2rem;
      color: rgba(255, 255, 255, 0.8);
      margin-bottom: 2rem;
    }

    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .btn-outline-light {
      background: transparent;
      border: 2px solid rgba(255, 255, 255, 0.6);
      color: white;
      padding: 10px 26px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      transition: var(--transition);
    }

    .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.15);
      border-color: white;
    }

    .hero-image {
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: 40px;
      height: 360px;
      box-shadow: 0 25px 50px rgba(0,0,0,0.5);
      border: 1px solid rgba(255,255,255,0.2);
    }

    /* 区块通用 */
    section {
      padding: 100px 0;
    }

    .section-title {
      text-align: center;
      margin-bottom: 20px;
    }

    .section-desc {
      text-align: center;
      color: var(--text-muted);
      max-width: 700px;
      margin: 0 auto 60px;
      font-size: 1.1rem;
    }

    /* 数据看板 */
    .data-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .data-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      text-align: center;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      border: 1px solid var(--border-light);
    }

    .data-number {
      font-size: 2.8rem;
      font-weight: 700;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .trend-up {
      color: #10B981;
      margin-left: 4px;
    }

    /* 服务矩阵 非对称 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .service-card {
      background: white;
      border-radius: var(--radius-xl);
      padding: 32px;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      border: 1px solid var(--border-light);
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .service-card.large {
      grid-column: span 2;
    }

    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary-light);
    }

    .badge-hot {
      background: var(--secondary);
      color: white;
      font-size: 0.75rem;
      padding: 4px 12px;
      border-radius: 20px;
      align-self: flex-start;
    }

    /* 对比区 */
    .compare-wrapper {
      display: flex;
      align-items: center;
      gap: 30px;
      justify-content: center;
      flex-wrap: wrap;
    }

    .compare-card {
      flex: 1;
      min-width: 280px;
      background: white;
      border-radius: var(--radius-xl);
      padding: 40px 30px;
      box-shadow: var(--shadow-card);
    }

    .vs-badge {
      background: var(--primary);
      color: white;
      border-radius: 50%;
      width: 60px;
      height: 60px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }

    /* FAQ */
    .faq-item {
      background: white;
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      padding: 20px 28px;
      box-shadow: 0 2px 12px rgba(0,0,0,0.04);
      cursor: pointer;
      transition: 0.2s;
      border-left: 4px solid transparent;
    }

    .faq-item.active {
      border-left: 4px solid var(--primary);
      background: #FDFBFF;
    }

    /* 表单 */
    .cta-form {
      display: flex;
      max-width: 500px;
      margin: 30px auto 0;
      gap: 12px;
    }

    .cta-input {
      flex: 1;
      padding: 14px 24px;
      border-radius: 40px;
      border: 1px solid #ddd;
      background: white;
      font-size: 1rem;
    }

    /* 页脚 */
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      color: #ccc;
    }

    @media (max-width: 1024px) {
      .container {
        padding: 0 24px;
      }
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .data-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid {
        grid-template-columns: 1fr 1fr;
      }
      .service-card.large {
        grid-column: span 2;
      }
    }

    @media (max-width: 768px) {
      .dock-nav {
        top: auto;
        bottom: 16px;
        width: 95%;
        border-radius: 36px;
        padding: 12px 24px;
      }
      .nav-links {
        gap: 14px;
        font-size: 0.8rem;
      }
      .logo-area span {
        display: none;
      }
      .services-grid, .data-grid {
        grid-template-columns: 1fr;
      }
      .service-card.large {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }