/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --primary: #0A0E17;
      --accent-red: #E63946;
      --accent-red-hover: #C1121F;
      --cool-white: #F1FAEE;
      --neutral-gray: #8D99AE;
      --text-white: #FFFFFF;
      --text-dark: #1D1D1D;
      --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
      --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
      --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(230, 57, 70, 0.15);
      --border-radius-card: 12px;
      --border-radius-btn: 8px;
      --border-radius-input: 8px;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: 'Inter', 'PingFang SC', 'SF Pro Text', system-ui, -apple-system, sans-serif;
      background-color: var(--primary);
      color: var(--text-white);
      margin: 0;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    /* 自定义容器宽度与居中 */
    .container-main {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    @media (min-width: 768px) {
      .container-main {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }

    /* 导航栏模糊效果与搜索框焦点 */
    .nav-blur {
      background-color: rgba(10, 14, 23, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: var(--transition-smooth);
    }

    .search-input {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 24px;
      color: white;
      transition: var(--transition-smooth);
      padding-left: 2.5rem;
    }

    .search-input:focus {
      outline: none;
      border-color: var(--accent-red);
      background: rgba(255, 255, 255, 0.12);
      box-shadow: 0 0 0 2px rgba(230, 57, 70, 0.25);
    }

    .search-icon {
      position: absolute;
      left: 1rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--neutral-gray);
      pointer-events: none;
    }

    /* 按钮扫光动效 */
    .btn-primary {
      background-color: var(--accent-red);
      color: white;
      border-radius: var(--border-radius-btn);
      padding: 0.875rem 2rem;
      font-weight: 600;
      position: relative;
      overflow: hidden;
      transition: var(--transition-smooth);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: none;
      cursor: pointer;
      letter-spacing: 0.02em;
    }

    .btn-primary::after {
      content: "";
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
      transition: left 0.5s ease;
    }

    .btn-primary:hover {
      background-color: var(--accent-red-hover);
      box-shadow: 0 8px 18px rgba(230, 57, 70, 0.35);
    }

    .btn-primary:hover::after {
      left: 100%;
    }

    .btn-outline {
      background: transparent;
      border: 1px solid white;
      color: white;
      border-radius: var(--border-radius-btn);
      padding: 0.875rem 2rem;
      font-weight: 600;
      transition: var(--transition-smooth);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }

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

    /* 卡片悬停辉光 */
    .feature-card, .product-card {
      background: rgba(10, 14, 23, 0.7);
      backdrop-filter: blur(8px);
      border-radius: var(--border-radius-card);
      padding: 2rem;
      transition: var(--transition-smooth);
      box-shadow: var(--shadow-card);
      border: 1px solid rgba(255,255,255,0.06);
    }

    .feature-card:hover, .product-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-card-hover);
      border-color: rgba(230, 57, 70, 0.25);
    }

    .light-card {
      background: var(--cool-white);
      color: var(--text-dark);
      border-radius: var(--border-radius-card);
      padding: 2rem;
      box-shadow: var(--shadow-card);
    }

    /* 手风琴FAQ */
    .faq-item {
      border-left: 4px solid transparent;
      transition: var(--transition-smooth);
      padding-left: 1.25rem;
      cursor: pointer;
    }

    .faq-item.active {
      border-left-color: var(--accent-red);
    }

    .faq-item h3 {
      transition: color 0.2s;
    }

    .faq-item.active h3 {
      color: var(--accent-red);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.3s;
      background: transparent;
      border-radius: 0 0 8px 8px;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 1rem 1.5rem;
      background: var(--cool-white);
      color: var(--text-dark);
      margin-top: 0.75rem;
      border-radius: 8px;
    }

    /* 动画相关 */
    .fade-in-up {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.23, 1, 0.32, 1);
    }

    .fade-in-up.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* 桌面导航搜索框宽度 */
    @media (min-width: 1024px) {
      .search-desktop-width {
        width: 40%;
        max-width: 420px;
      }
    }