/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    :root {
      --primary: #0A0E27;
      --accent-red: #FF4655;
      --accent-cyan: #00E5FF;
      --neutral-light: #F5F5F7;
      --card-dark: #1A1F3A;
      --text-white: #FFFFFF;
      --text-secondary: #B0B8D0;
      --text-dark: #0A0E27;
      --text-muted: #4A4F6A;
      --radius-xl: 16px;
      --radius-lg: 12px;
      --radius-md: 8px;
      --shadow-glow: 0 8px 32px rgba(0,229,255,0.12);
      --shadow-card: 0 2px 8px rgba(0,0,0,0.3);
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--primary);
      color: var(--text-white);
      margin: 0;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      scroll-behavior: smooth;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    button, input {
      font-family: inherit;
    }
    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    @media (min-width: 768px) {
      .container {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }
    /* 自定义滚动条 */
    ::-webkit-scrollbar {
      width: 6px;
    }
    ::-webkit-scrollbar-track {
      background: #0A0E27;
    }
    ::-webkit-scrollbar-thumb {
      background: #00E5FF;
      border-radius: 3px;
    }
    /* 导航栏 */
    .desktop-nav {
      display: none;
    }
    @media (min-width: 1024px) {
      .desktop-nav {
        display: flex;
        position: sticky;
        top: 0;
        z-index: 50;
        background: rgba(10,14,39,0.95);
        backdrop-filter: blur(8px);
        border-bottom: 1px solid rgba(0,229,255,0.15);
        padding: 0 2rem;
        height: 72px;
        align-items: center;
        justify-content: space-between;
      }
      .mobile-bottom-tab {
        display: none;
      }
    }
    .mobile-bottom-tab {
      display: flex;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 50;
      background: rgba(10,14,39,0.98);
      backdrop-filter: blur(12px);
      height: 64px;
      align-items: center;
      justify-content: space-around;
      border-top: 1px solid rgba(0,229,255,0.2);
      padding-bottom: env(safe-area-inset-bottom);
    }
    @media (min-width: 1024px) {
      .mobile-bottom-tab {
        display: none;
      }
    }
    .nav-link {
      font-weight: 500;
      font-size: 0.9rem;
      transition: color 0.2s;
      color: #B0B8D0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--accent-cyan);
    }
    .tab-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      font-size: 0.7rem;
      color: #B0B8D0;
      transition: 0.2s;
    }
    .tab-item i {
      font-size: 1.4rem;
      margin-bottom: 2px;
    }
    .tab-item.active {
      color: var(--accent-cyan);
    }
    /* 按钮 */
    .btn-primary {
      background: var(--accent-red);
      color: white;
      font-weight: 600;
      border-radius: var(--radius-md);
      padding: 14px 32px;
      display: inline-block;
      transition: all 0.25s;
      box-shadow: 0 4px 14px rgba(255,70,85,0.3);
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      filter: brightness(1.1);
      box-shadow: 0 0 24px rgba(255,70,85,0.6);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--accent-cyan);
      color: var(--accent-cyan);
      font-weight: 600;
      border-radius: var(--radius-md);
      padding: 12px 30px;
      display: inline-block;
      transition: all 0.25s;
    }
    .btn-outline:hover {
      background: rgba(0,229,255,0.1);
      box-shadow: 0 0 20px rgba(0,229,255,0.3);
    }
    /* 卡片 */
    .card {
      background: var(--card-dark);
      border-radius: var(--radius-lg);
      padding: 2rem;
      border: 1px solid rgba(0,229,255,0.12);
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
    }
    .card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-glow);
      border-color: rgba(0,229,255,0.4);
    }
    .service-icon {
      width: 64px;
      height: 64px;
      border-radius: 16px;
      background: rgba(0,229,255,0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.5rem;
      overflow: hidden;
    }
    /* 数字动画 */
    .stat-number {
      font-size: clamp(2.4rem, 6vw, 3.5rem);
      font-weight: 900;
      color: var(--accent-cyan);
      line-height: 1.1;
      font-feature-settings: "tnum";
      letter-spacing: -0.5px;
    }
    /* 进度条 */
    .progress-bar {
      height: 12px;
      background: rgba(255,255,255,0.08);
      border-radius: 20px;
      overflow: hidden;
    }
    .progress-fill {
      height: 100%;
      border-radius: 20px;
      background: var(--accent-cyan);
      box-shadow: 0 0 12px #00E5FF;
      width: 0%;
      transition: width 1s ease;
    }
    .progress-fill.gray {
      background: #4A4F6A;
      box-shadow: none;
    }
    /* FAQ 手风琴 */
    .faq-item {
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .faq-question {
      font-weight: 700;
      padding: 1.2rem 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      color: #FFFFFF;
      transition: 0.2s;
    }
    .faq-question:hover {
      color: var(--accent-cyan);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      color: #B0B8D0;
      font-weight: 400;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 1.2rem;
    }
    /* 表单 */
    .input-field {
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: var(--radius-md);
      padding: 14px 18px;
      width: 100%;
      color: white;
      transition: 0.2s;
      outline: none;
    }
    .input-field:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 12px rgba(0,229,255,0.2);
    }
    footer a:hover {
      color: var(--accent-cyan);
    }
    /* 背景图 Hero */
    .hero-bg {
      background: radial-gradient(circle at 30% 40%, rgba(10,14,39,0.7) 0%, #0A0E27 90%), url('/assets/images/backpic/hero-bg.webp') center/cover no-repeat;
    }