/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --primary: #0A0E27;
      --accent: #00F0FF;
      --highlight: #FF4655;
      --bg: #F5F6FA;
      --card: #FFFFFF;
      --text-main: #1A1D2E;
      --text-muted: #6B7280;
      --section-bg: #EAECF3;
      --footer-bg: #06091A;
      --border-light: #E5E7EB;
      --shadow-card: 0 2px 8px rgba(10,14,39,0.06);
      --shadow-card-hover: 0 8px 24px rgba(10,14,39,0.12);
      --shadow-btn: 0 4px 12px rgba(0,240,255,0.25);
      --shadow-btn-hover: 0 6px 18px rgba(0,240,255,0.4);
      --radius-card: 16px;
      --radius-btn: 12px;
      --radius-input: 12px;
      --radius-pill: 9999px;
      --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--bg);
      color: var(--text-main);
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

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

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 16px;
    }

    /* 导航栏 */
    .navbar {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(10,14,39,0.08);
      height: 72px;
      display: flex;
      align-items: center;
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 800;
      font-size: 1.5rem;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    .logo-icon {
      font-size: 1.8rem;
      filter: drop-shadow(0 2px 6px rgba(0,240,255,0.4));
    }

    .search-box {
      position: relative;
      width: 320px;
      max-width: 40%;
    }

    .search-box input {
      width: 100%;
      height: 44px;
      background: #F9FAFB;
      border: 1.5px solid #D1D5DB;
      border-radius: var(--radius-pill);
      padding: 0 48px 0 20px;
      font-size: 0.95rem;
      outline: none;
      transition: all 0.2s;
      color: var(--text-main);
    }

    .search-box input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(0,240,255,0.2);
    }

    .search-icon {
      position: absolute;
      right: 16px;
      top: 50%;
      transform: translateY(-50%);
      color: #9CA3AF;
      font-size: 1.2rem;
      pointer-events: none;
    }

    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
    }

    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: #4B5563;
      position: relative;
      padding: 4px 0;
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: width 0.25s ease;
    }

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

    .nav-links a:hover::after {
      width: 100%;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: transparent;
      border: none;
      padding: 8px;
    }

    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--primary);
      transition: 0.2s;
      display: block;
    }

    .mobile-menu {
      display: none;
      position: fixed;
      top: 72px;
      left: 0;
      width: 100%;
      background: rgba(255,255,255,0.98);
      backdrop-filter: blur(20px);
      padding: 24px 16px;
      flex-direction: column;
      gap: 20px;
      border-bottom: 1px solid #E5E7EB;
      z-index: 40;
    }

    .mobile-menu a {
      font-size: 1.2rem;
      font-weight: 600;
      color: var(--primary);
      padding: 12px 0;
      border-bottom: 1px solid #f0f0f0;
    }

    .mobile-search {
      width: 100%;
      margin-bottom: 8px;
    }

    /* Hero */
    .hero {
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      min-height: 90vh;
      display: flex;
      align-items: center;
      position: relative;
    }

    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(10,14,39,0.85) 0%, rgba(10,14,39,0.4) 100%);
    }

    .hero-content {
      position: relative;
      z-index: 2;
      color: white;
      max-width: 700px;
    }

    .hero h1 {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -0.5px;
      margin-bottom: 1.5rem;
    }

    .hero-sub {
      font-size: 1.25rem;
      color: rgba(255,255,255,0.85);
      margin-bottom: 2.5rem;
      line-height: 1.6;
    }

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

    .btn-primary {
      background: var(--accent);
      color: var(--primary);
      font-weight: 700;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      box-shadow: var(--shadow-btn);
      transition: 0.2s;
      border: none;
      cursor: pointer;
      font-size: 1rem;
    }

    .btn-primary:hover {
      background: #00D4E0;
      box-shadow: var(--shadow-btn-hover);
      transform: scale(1.02);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--accent);
      color: var(--accent);
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      transition: 0.2s;
      cursor: pointer;
      font-size: 1rem;
    }

    .btn-outline:hover {
      background: rgba(0,240,255,0.1);
    }

    .stats-bar {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 24px;
      margin-top: 48px;
      background: rgba(255,255,255,0.08);
      backdrop-filter: blur(12px);
      padding: 24px;
      border-radius: 20px;
      color: white;
    }

    .stat-item h3 {
      font-size: 2rem;
      font-weight: 800;
      color: var(--accent);
      font-feature-settings: "tnum";
    }

    /* 通用区块 */
    section {
      padding: 80px 0;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 48px;
      color: var(--primary);
    }

    .card {
      background: var(--card);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      transition: all 0.25s ease;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card-hover);
    }

    /* features 差异化卡片 */
    .features-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr 1fr;
      gap: 24px;
    }

    .feature-left .feature-item {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 16px 0;
      border-bottom: 1px solid #f0f0f0;
    }

    .feature-center {
      background: var(--card);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }

    .feature-center img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }

    .feature-right .progress-item {
      margin-bottom: 20px;
    }

    .progress-bar {
      height: 8px;
      background: #E5E7EB;
      border-radius: 4px;
      overflow: hidden;
      margin-top: 6px;
    }

    .progress-fill {
      height: 100%;
      background: var(--accent);
      width: 0%;
      border-radius: 4px;
    }

    /* 数据看板 */
    .data-dashboard {
      background: var(--section-bg);
      border-radius: 24px;
      padding: 32px;
    }

    .dashboard-grid {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 24px;
    }

    .metric-card {
      background: white;
      border-radius: 12px;
      padding: 20px;
      box-shadow: var(--shadow-card);
    }

    .mini-chart {
      display: flex;
      align-items: flex-end;
      gap: 6px;
      height: 40px;
      margin-top: 12px;
    }

    .bar {
      width: 8px;
      background: #00F0FF;
      border-radius: 4px 4px 0 0;
      height: 20px;
    }

    /* 服务矩阵 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(2,1fr);
      gap: 24px;
    }

    .service-card {
      display: flex;
      background: white;
      border-radius: var(--radius-card);
      padding: 24px;
      gap: 20px;
      align-items: center;
      box-shadow: var(--shadow-card);
      transition: 0.2s;
    }

    .service-card:hover {
      border-color: var(--accent);
      box-shadow: var(--shadow-card-hover);
      border: 1px solid var(--accent);
    }

    /* 对比区 */
    .compare-grid {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      gap: 24px;
      align-items: center;
    }

    .vs-divider {
      font-size: 2rem;
      font-weight: 800;
      color: var(--highlight);
    }

    /* FAQ */
    .faq-item {
      border-bottom: 1px solid #E5E7EB;
    }

    .faq-question {
      background: white;
      padding: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #F9FAFB;
      padding: 0 20px;
    }

    .faq-answer.open {
      max-height: 200px;
      padding: 20px;
    }

    /* 表单 */
    .contact-form input, .contact-form textarea {
      width: 100%;
      height: 48px;
      background: #F9FAFB;
      border: 1.5px solid #D1D5DB;
      border-radius: 12px;
      padding: 0 16px;
      margin-bottom: 16px;
      font-size: 1rem;
      transition: 0.2s;
    }

    .contact-form input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(0,240,255,0.15);
      outline: none;
    }

    .submit-btn {
      background: var(--accent);
      color: #0A0E27;
      font-weight: 700;
      height: 52px;
      border-radius: 12px;
      width: 100%;
      border: none;
      cursor: pointer;
      transition: 0.2s;
    }

    .submit-btn:hover {
      background: #00D4E0;
      transform: scale(1.02);
    }

    footer {
      background: var(--footer-bg);
      color: #9CA3AF;
      padding: 60px 0 30px;
    }

    @media (max-width: 768px) {
      .navbar {
        height: 56px;
      }
      .search-box {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .hamburger {
        display: flex;
      }
      .hero h1 {
        font-size: 2rem;
      }
      .stats-bar {
        grid-template-columns: repeat(2,1fr);
      }
      .features-grid, .dashboard-grid, .services-grid, .compare-grid {
        grid-template-columns: 1fr;
      }
      .vs-divider {
        text-align: center;
      }
      section {
        padding: 48px 0;
      }
    }