/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');

    :root {
      --primary: #7C3AED;
      --primary-dark: #6D28D9;
      --accent: #06D6A0;
      --accent-glow: rgba(6, 214, 160, 0.6);
      --dark-bg: #0F0A1A;
      --dark-card: #1A1333;
      --light-bg: #F8F7FC;
      --card-bg: #FFFFFF;
      --text-dark: #1E1B2E;
      --text-light: #E8E4F0;
      --text-muted: #6B647A;
      --border-color: #E2DCF0;
      --border-glow: rgba(124, 58, 237, 0.25);
      --shadow-sm: 0 4px 24px rgba(124, 58, 237, 0.08);
      --shadow-hover: 0 12px 40px rgba(124, 58, 237, 0.18);
      --radius-card: 16px;
      --radius-btn: 10px;
      --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
      margin: 0;
      padding: 0;
      background-color: var(--light-bg);
      color: var(--text-dark);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    .inter-font {
      font-family: "Inter", "SF Pro Display", system-ui, sans-serif;
    }

    .container-custom {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 霓虹导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 50;
      background-color: var(--dark-bg);
      border-bottom: 1px solid var(--border-glow);
      height: 72px;
      display: flex;
      align-items: center;
      backdrop-filter: blur(8px);
    }

    .nav-link {
      color: var(--text-light);
      position: relative;
      font-weight: 500;
      transition: color var(--transition-base);
      padding-bottom: 4px;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--accent);
      transform: scaleX(0);
      transition: transform 0.3s ease;
      border-radius: 2px;
    }

    .nav-link:hover {
      color: #FFFFFF;
    }

    .nav-link:hover::after {
      transform: scaleX(1);
    }

    .nav-link.active {
      color: var(--accent);
      text-shadow: 0 0 12px var(--accent-glow);
    }

    .nav-link.active::after {
      transform: scaleX(1);
      background-color: var(--accent);
      box-shadow: 0 0 12px var(--accent-glow);
    }

    .btn-accent {
      background-color: var(--accent);
      color: var(--dark-bg);
      font-weight: 600;
      letter-spacing: 0.03em;
      border-radius: var(--radius-btn);
      padding: 0.75rem 1.75rem;
      transition: all var(--transition-base);
      display: inline-block;
      text-align: center;
      box-shadow: 0 0 16px rgba(6, 214, 160, 0.3);
    }

    .btn-accent:hover {
      box-shadow: 0 0 28px var(--accent-glow);
      transform: translateY(-1px);
    }

    .btn-primary {
      background-color: var(--primary);
      color: white;
      font-weight: 600;
      letter-spacing: 0.03em;
      border-radius: var(--radius-btn);
      padding: 0.75rem 1.75rem;
      transition: all var(--transition-base);
      display: inline-block;
      text-align: center;
    }

    .btn-primary:hover {
      background-color: var(--primary-dark);
      box-shadow: 0 0 24px rgba(124, 58, 237, 0.5);
      transform: translateY(-1px);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      font-weight: 600;
      letter-spacing: 0.03em;
      border-radius: var(--radius-btn);
      padding: 0.75rem 1.75rem;
      transition: all var(--transition-base);
      display: inline-block;
      text-align: center;
    }

    .btn-outline:hover {
      background-color: var(--primary);
      color: white;
    }

    .btn-outline-light {
      background: transparent;
      border: 2px solid white;
      color: white;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 0.75rem 1.75rem;
      transition: all var(--transition-base);
      display: inline-block;
    }

    .btn-outline-light:hover {
      background-color: white;
      color: var(--dark-bg);
    }

    .section-padding {
      padding-top: 100px;
      padding-bottom: 100px;
    }

    .card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all var(--transition-base);
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(124, 58, 237, 0.4);
    }

    .card-dark {
      background: var(--dark-card);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: var(--text-light);
    }

    .decorative-line {
      width: 60px;
      height: 3px;
      background-color: var(--primary);
      border-radius: 2px;
      margin-top: 0.5rem;
      margin-bottom: 1.5rem;
    }

    .h1-style {
      font-size: clamp(2.25rem, 6vw, 4.5rem);
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.15;
    }

    .h2-style {
      font-size: clamp(1.75rem, 4vw, 2.5rem);
      font-weight: 700;
      letter-spacing: -0.01em;
    }

    .accent-glow-text {
      text-shadow: 0 0 16px rgba(6, 214, 160, 0.7);
    }

    .faq-item {
      border-bottom: 1px solid var(--border-color);
      cursor: pointer;
      transition: all 0.3s;
    }

    .faq-item:hover .faq-question {
      color: var(--primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      color: var(--text-muted);
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-top: 1rem;
      padding-bottom: 1rem;
    }

    .faq-item.active {
      border-left: 3px solid var(--primary);
      padding-left: 1rem;
    }

    .pricing-highlight {
      border: 2px solid var(--primary);
      box-shadow: 0 0 30px rgba(124, 58, 237, 0.25);
      background: #F5F0FF;
    }

    @media (max-width: 1023px) {
      .navbar {
        height: 64px;
      }
      .section-padding {
        padding-top: 80px;
        padding-bottom: 80px;
      }
    }

    @media (max-width: 767px) {
      .navbar {
        height: 60px;
      }
      .section-padding {
        padding-top: 64px;
        padding-bottom: 64px;
      }
      .card {
        padding: 24px;
      }
    }

    /* 汉堡菜单 */
    .mobile-menu {
      display: none;
      position: fixed;
      top: 0;
      right: 0;
      width: 80%;
      max-width: 320px;
      height: 100vh;
      background: var(--dark-bg);
      z-index: 60;
      flex-direction: column;
      padding: 2rem;
      transform: translateX(100%);
      transition: transform 0.3s ease;
      box-shadow: -5px 0 25px rgba(0,0,0,0.5);
    }

    .mobile-menu.open {
      transform: translateX(0);
      display: flex;
    }

    .overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.7);
      z-index: 55;
    }

    .overlay.open {
      display: block;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      z-index: 70;
    }

    .hamburger span {
      width: 26px;
      height: 2.5px;
      background: white;
      border-radius: 2px;
      transition: 0.3s;
    }

    @media (max-width: 767px) {
      .desktop-nav {
        display: none;
      }
      .hamburger {
        display: flex;
      }
    }