/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --primary-red: #E43D30;
      --deep-blue: #1A1D2E;
      --energy-orange: #F57C00;
      --bg-warm: #FAF9F7;
      --bg-light-gray: #F0EEEA;
      --accent-green: #00C853;
      --text-dark: #1A1D2E;
      --text-muted: #5A5D6E;
      --border-light: rgba(26,29,46,0.08);
      --shadow-card: 0 4px 16px rgba(26,29,46,0.06);
      --shadow-card-hover: 0 12px 32px rgba(228,61,48,0.12);
      --shadow-btn: 0 4px 14px rgba(245,124,0,0.35);
      --radius-card: 20px;
      --radius-btn: 12px;
      --radius-badge: 10px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Inter", "Roboto", sans-serif;
      --transition-smooth: all 0.25s ease;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--text-dark);
      line-height: 1.7;
      margin: 0;
      box-sizing: border-box;
      -webkit-font-smoothing: antialiased;
    }

    *, *::before, *::after {
      box-sizing: inherit;
    }

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

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

    /* 导航样式 */
    .nav-brand {
      font-weight: 700;
      font-size: 1.5rem;
      letter-spacing: -0.3px;
      color: var(--primary-red);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .nav-brand i {
      font-size: 1.8rem;
      color: var(--primary-red);
    }
    .channel-link {
      position: relative;
      padding: 0.5rem 0.75rem;
      font-weight: 500;
      color: var(--text-dark);
      transition: var(--transition-smooth);
      white-space: nowrap;
    }
    .channel-link:hover {
      color: var(--energy-orange);
    }
    .channel-link.active {
      color: var(--primary-red);
    }
    .channel-link.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0.75rem;
      right: 0.75rem;
      height: 3px;
      background: var(--primary-red);
      border-radius: 3px;
    }

    /* 移动端菜单 */
    .mobile-menu {
      background: var(--deep-blue);
      backdrop-filter: blur(12px);
    }

    /* Hero动画 */
    @keyframes floatDashboard {
      0% { transform: translateY(0); }
      50% { transform: translateY(-12px); }
      100% { transform: translateY(0); }
    }
    .hero-float {
      animation: floatDashboard 5s ease-in-out infinite;
    }
    @keyframes speedLine {
      0% { background-position: 0% 0%; }
      100% { background-position: 100% 100%; }
    }
    .hero-bg-animate {
      background: linear-gradient(135deg, #1A1D2E 0%, #2D1F2E 40%, #E43D30 100%);
      position: relative;
    }
    .hero-bg-animate::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200" opacity="0.08"><path d="M20 50 Q 80 10 150 50 T 180 100" stroke="white" fill="none" stroke-width="1.2" stroke-dasharray="6 6"/><path d="M10 80 Q 70 140 160 90 T 190 130" stroke="white" fill="none" stroke-width="1" stroke-dasharray="4 8"/></svg>');
      background-size: cover;
      pointer-events: none;
    }

    /* 卡片悬停 */
    .card-hover {
      transition: all 0.3s ease;
      background: white;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-light);
    }
    .card-hover:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-card-hover);
    }
    .service-img {
      transition: filter 0.3s ease;
    }
    .card-hover:hover .service-img {
      filter: saturate(1.2) brightness(1.02);
    }

    /* 数据徽章数字 */
    .stat-number {
      font-weight: 800;
      font-size: 2.8rem;
      line-height: 1.2;
      background: linear-gradient(135deg, #E43D30, #F57C00);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    /* 案例卡片遮罩 */
    .case-card {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius-card);
      height: 320px;
    }
    .case-overlay {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      background: linear-gradient(to top, rgba(26,29,46,0.85) 0%, transparent 100%);
      padding: 2rem 1.5rem 1.5rem;
      transition: background 0.3s ease;
    }
    .case-card:hover .case-overlay {
      background: linear-gradient(to top, rgba(26,29,46,0.95) 0%, rgba(26,29,46,0.2) 100%);
    }

    /* FAQ手风琴 */
    .faq-item {
      border-radius: 14px;
      background: white;
      border: 1px solid var(--border-light);
      margin-bottom: 0.8rem;
      transition: all 0.25s;
    }
    .faq-question {
      cursor: pointer;
      padding: 1.2rem 1.5rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.25s ease;
      background: #F9FAFB;
      border-radius: 0 0 14px 14px;
      color: var(--text-muted);
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 1rem 1.5rem 1.5rem;
    }
    .faq-arrow {
      transition: transform 0.3s ease;
      color: var(--primary-red);
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
    }

    /* CTA按钮效果 */
    .btn-primary {
      background: var(--energy-orange);
      color: white;
      border-radius: var(--radius-btn);
      padding: 0.9rem 2.2rem;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(245,124,0,0.3);
      transition: all 0.25s;
      display: inline-block;
      text-align: center;
    }
    .btn-primary:hover {
      background: #e06d00;
      box-shadow: var(--shadow-btn);
      transform: scale(1.02);
    }
    .btn-outline-light {
      border: 2px solid white;
      color: white;
      border-radius: var(--radius-btn);
      padding: 0.9rem 2.2rem;
      font-weight: 600;
      transition: all 0.25s;
      background: transparent;
    }
    .btn-outline-light:hover {
      background: rgba(255,255,255,0.15);
      border-color: #fff;
    }
    .btn-white-red {
      background: white;
      color: var(--primary-red);
      border-radius: var(--radius-btn);
      padding: 0.9rem 2.2rem;
      font-weight: 700;
      box-shadow: 0 6px 18px rgba(0,0,0,0.1);
      transition: all 0.25s;
      display: inline-block;
    }
    .btn-white-red:hover {
      background: #fff5f5;
      box-shadow: 0 10px 22px rgba(228,61,48,0.25);
    }

    footer a:hover {
      color: var(--energy-orange);
    }
    .social-icon {
      transition: all 0.2s;
      color: #ccc;
      font-size: 1.4rem;
    }
    .social-icon:hover {
      color: var(--primary-red);
      transform: translateY(-2px);
    }

    @media (max-width: 767px) {
      .stat-number {
        font-size: 2.2rem;
      }
      .case-card {
        height: 260px;
      }
    }