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

    :root {
      --primary: #6C3CE1;
      --primary-deep: #5a2ec7;
      --accent: #FF6B35;
      --accent-deep: #e85d2a;
      --dark: #1A1A2E;
      --bg: #FAFAFA;
      --card-white: #FFFFFF;
      --body-text: #2D2D2D;
      --weak-text: #6B6B6B;
      --border-light: #E5E5E5;
      --shadow-sm: 0 4px 20px rgba(0,0,0,0.06);
      --shadow-hover: 0 12px 32px rgba(108,60,225,0.12);
      --radius-lg: 12px;
      --radius-md: 8px;
      --transition: 0.25s ease;
      --font-sans: 'Inter', -apple-system, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: var(--font-sans);
      background-color: var(--bg);
      color: var(--body-text);
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

    button, a {
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
    }

    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 5vw;
      padding-right: 5vw;
    }

    @media (max-width: 768px) {
      .container {
        padding-left: 4vw;
        padding-right: 4vw;
      }
    }

    /* 自定义字体阶梯 */
    h1 {
      font-size: clamp(2.25rem, 5vw, 3.5rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.2;
    }
    h2 {
      font-size: clamp(1.75rem, 4vw, 2.5rem);
      font-weight: 600;
      line-height: 1.3;
    }
    h3 {
      font-size: 1.35rem;
      font-weight: 600;
      line-height: 1.4;
    }
    .text-weak {
      color: var(--weak-text);
    }
    .text-body {
      color: var(--body-text);
    }

    /* 按钮系统 */
    .btn-primary {
      background-color: var(--primary);
      color: white;
      border-radius: var(--radius-md);
      padding: 0.875rem 2rem;
      font-weight: 600;
      letter-spacing: 0.05em;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: none;
      box-shadow: 0 4px 12px rgba(108,60,225,0.25);
      transition: 0.25s ease;
    }
    .btn-primary:hover {
      background-color: var(--primary-deep);
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(108,60,225,0.35);
    }
    .btn-secondary {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      border-radius: var(--radius-md);
      padding: 0.75rem 1.75rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: 0.25s ease;
    }
    .btn-secondary:hover {
      background-color: rgba(108,60,225,0.08);
      transform: translateY(-2px);
    }
    .btn-accent {
      background-color: var(--accent);
      color: white;
      border-radius: var(--radius-md);
      padding: 1rem 2.25rem;
      font-weight: 700;
      font-size: 1.1rem;
      letter-spacing: 0.05em;
      border: none;
      box-shadow: 0 6px 18px rgba(255,107,53,0.3);
      transition: 0.25s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-accent:hover {
      background-color: var(--accent-deep);
      transform: scale(1.03);
      box-shadow: 0 10px 24px rgba(255,107,53,0.45);
    }

    /* 卡片样式 */
    .card {
      background: var(--card-white);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .card-padding {
      padding: 1.75rem;
    }

    /* 导航增强 */
    .nav-channel a {
      transition: 0.2s;
      border-radius: 999px;
      padding: 0.45rem 1rem;
      font-weight: 500;
      color: var(--body-text);
    }
    .nav-channel a:hover {
      background-color: rgba(108,60,225,0.08);
      color: var(--primary);
    }
    .menu-toggle {
      display: none;
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-channel {
        display: none;
        flex-direction: column;
        width: 100%;
        background: white;
        position: absolute;
        top: 100%;
        left: 0;
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        padding: 1rem 2rem;
      }
      .nav-channel.open {
        display: flex;
      }
      .nav-channel a {
        padding: 0.5rem 0;
        border-radius: 0;
        border-bottom: 1px solid #eee;
      }
    }

    /* 手风琴图标 */
    .faq-item button {
      width: 100%;
      text-align: left;
      background: transparent;
      border: none;
      padding: 1.2rem 0;
      font-weight: 600;
      font-size: 1.2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--body-text);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      color: var(--weak-text);
    }
    .faq-item.open .faq-answer {
      max-height: 20rem;
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }
    .faq-icon {
      transition: 0.3s;
      font-size: 1.5rem;
      color: var(--primary);
    }

    footer a:hover {
      color: var(--primary);
      transition: 0.2s;
    }

    /* 场景横向滚动 */
    .scenario-scroll {
      display: flex;
      gap: 1.5rem;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      -webkit-overflow-scrolling: touch;
      padding-bottom: 0.5rem;
    }
    .scenario-scroll::-webkit-scrollbar {
      display: none;
    }
    .scenario-card {
      flex: 0 0 320px;
      scroll-snap-align: start;
    }
    @media (max-width: 640px) {
      .scenario-card {
        flex: 0 0 260px;
      }
    }