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

    :root {
      --primary-gradient: linear-gradient(135deg, #D4A853 0%, #B8860B 100%);
      --primary-light: #F5E6CC;
      --primary-dark: #8B6508;
      --deep-charcoal: #2D2D2D;
      --warm-ivory: #FAF7F2;
      --soft-white: #FFFFFF;
      --muted-gray: #6B7280;
      --border-light: #E5E0D5;
      --shadow-sm: 0 8px 30px rgba(0,0,0,0.04);
      --shadow-md: 0 12px 40px rgba(0,0,0,0.08);
      --shadow-hover: 0 20px 50px rgba(0,0,0,0.12);
      --radius-card: 16px;
      --radius-btn: 8px;
      --radius-lg: 24px;
      --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
      --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      --spacing-section: 5rem;
    }

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

    html {
      scroll-behavior: smooth;
      scroll-padding-top: 90px;
    }

    body {
      font-family: var(--font-sans);
      background-color: #F9F7F4;
      color: var(--deep-charcoal);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

    /* 卡片化导航面板 */
    .nav-panel {
      position: sticky;
      top: 1rem;
      z-index: 50;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-radius: 20px;
      box-shadow: 0 10px 35px rgba(0,0,0,0.05), 0 1px 0 rgba(0,0,0,0.03);
      border: 1px solid rgba(255,255,255,0.5);
      margin: 1rem auto 0;
      width: calc(100% - 2rem);
      max-width: 1260px;
      padding: 0.75rem 1.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: var(--transition-smooth);
    }

    .logo-text {
      font-weight: 700;
      font-size: 1.6rem;
      letter-spacing: -0.3px;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      white-space: nowrap;
    }

    .nav-item {
      display: flex;
      align-items: center;
      gap: 0.35rem;
      padding: 0.6rem 1.1rem;
      border-radius: 14px;
      font-weight: 500;
      font-size: 0.95rem;
      color: var(--deep-charcoal);
      background: transparent;
      transition: var(--transition-smooth);
      white-space: nowrap;
      text-decoration: none;
      border: 1px solid transparent;
    }

    .nav-item i {
      font-size: 1rem;
      color: #B8860B;
      opacity: 0.8;
    }

    .nav-item:hover {
      background: #F5F3EF;
      box-shadow: 0 4px 12px rgba(0,0,0,0.04);
      transform: translateY(-2px);
      border-color: rgba(184, 134, 11, 0.15);
    }

    .nav-item.active {
      background: var(--primary-gradient);
      color: white;
      box-shadow: 0 8px 18px rgba(184, 134, 11, 0.25);
      border-color: transparent;
    }
    .nav-item.active i {
      color: white;
      opacity: 1;
    }

    .btn-primary {
      background: var(--primary-gradient);
      border: none;
      color: white;
      font-weight: 600;
      padding: 0.7rem 1.8rem;
      border-radius: var(--radius-btn);
      cursor: pointer;
      transition: var(--transition-smooth);
      box-shadow: 0 4px 12px rgba(184, 134, 11, 0.2);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      text-decoration: none;
      white-space: nowrap;
      font-size: 0.95rem;
    }

    .btn-primary:hover {
      box-shadow: 0 10px 22px rgba(184, 134, 11, 0.35);
      transform: translateY(-2px);
      filter: brightness(1.05);
    }

    .btn-outline {
      background: transparent;
      border: 1.5px solid #B8860B;
      color: #B8860B;
      font-weight: 600;
      padding: 0.7rem 1.8rem;
      border-radius: var(--radius-btn);
      cursor: pointer;
      transition: var(--transition-smooth);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      white-space: nowrap;
      font-size: 0.95rem;
    }

    .btn-outline:hover {
      background: rgba(212, 168, 83, 0.08);
      border-color: #8B6508;
      color: #8B6508;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      letter-spacing: -0.5px;
      margin-bottom: 0.5rem;
      color: var(--deep-charcoal);
    }

    .section-subtitle {
      font-size: 1.1rem;
      color: var(--muted-gray);
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.7;
    }

    .card {
      background: var(--soft-white);
      border-radius: var(--radius-card);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-smooth);
      border: 1px solid transparent;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(184, 134, 11, 0.2);
    }

    .icon-badge {
      width: 52px;
      height: 52px;
      background: rgba(212, 168, 83, 0.12);
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #B8860B;
      font-size: 1.6rem;
      margin-bottom: 1.2rem;
    }

    .data-badge {
      background: #1E3A3A;
      color: #E5D3A5;
      font-weight: 700;
      font-size: 2rem;
      border-radius: 18px;
      padding: 0.2rem 1rem;
      display: inline-block;
      line-height: 1.3;
      letter-spacing: -0.5px;
    }

    .faq-card {
      background: #F5F3EF;
      border-radius: 16px;
      padding: 1.4rem 2rem;
      cursor: pointer;
      transition: var(--transition-smooth);
      border-left: 4px solid transparent;
      margin-bottom: 12px;
    }

    .faq-card.active {
      background: white;
      border-left-color: #B8860B;
      box-shadow: var(--shadow-sm);
    }

    .footer-link {
      color: #CBD5E1;
      text-decoration: none;
      transition: color 0.2s;
      font-size: 0.95rem;
    }
    .footer-link:hover {
      color: #D4A853;
    }

    @media (max-width: 1024px) {
      .nav-panel {
        padding: 0.5rem 1rem;
        flex-wrap: wrap;
      }
      .nav-item {
        padding: 0.5rem 0.7rem;
        font-size: 0.85rem;
      }
    }

    @media (max-width: 768px) {
      .nav-panel {
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
        top: 0.5rem;
        border-radius: 24px;
      }
      .nav-links {
        display: flex;
        overflow-x: auto;
        gap: 0.5rem;
        justify-content: flex-start;
        padding: 0.5rem 0;
      }
      .section-title {
        font-size: 1.9rem;
      }
      .container {
        padding-left: 1.2rem;
        padding-right: 1.2rem;
      }
      .hero-image-card {
        margin-top: 2rem;
      }
    }