/* roulang page: index */
:root {
      --brand-primary: #0B1B2B;
      --brand-secondary: #00D285;
      --brand-accent: #FF6A3D;
      --brand-dark: #081018;
      --brand-light: #F8FAFC;
      --brand-subtle: #EEF4F8;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --card-radius: 12px;
      --shadow-soft: 0 16px 32px -8px rgba(11,27,43,0.08);
      --transition-smooth: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #FFFFFF;
      line-height: 1.75;
      font-size: 15px;
      overflow-x: hidden;
    }

    h1, h2, h3, h4, h5, h6 {
      color: var(--brand-primary);
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.35;
    }

    /* 顶部微栏与主导航 */
    .top-micro-bar {
      background-color: var(--brand-dark);
      color: rgba(255,255,255,0.7);
      font-size: 13px;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .top-micro-bar a {
      color: rgba(255,255,255,0.85);
      text-decoration: none;
    }
    .header-nav {
      background-color: var(--brand-primary);
      border-bottom: 1px solid rgba(255,255,255,0.1);
      position: sticky;
      top: 0;
      z-index: 1030;
      box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    }
    .navbar-brand {
      color: #FFFFFF !important;
      font-weight: 800;
      font-size: 20px;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .navbar-brand span {
      background: linear-gradient(135deg, #00D285, #22C55E);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .header-nav .nav-link {
      color: rgba(255,255,255,0.82) !important;
      font-weight: 500;
      padding: 8px 14px !important;
      transition: var(--transition-smooth);
    }
    .header-nav .nav-link:hover,
    .header-nav .nav-link.active {
      color: var(--brand-secondary) !important;
    }
    .btn-brand-accent {
      background-color: var(--brand-accent);
      color: #FFFFFF;
      font-weight: 600;
      border: none;
      padding: 10px 22px;
      border-radius: 8px;
      transition: var(--transition-smooth);
      box-shadow: 0 4px 14px rgba(255,106,61,0.3);
    }
    .btn-brand-accent:hover, .btn-brand-accent:focus {
      background-color: #E65528;
      color: #FFFFFF;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255,106,61,0.4);
    }
    .btn-brand-outline {
      border: 1px solid rgba(255,255,255,0.3);
      color: #FFFFFF;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: 8px;
      transition: var(--transition-smooth);
      background: transparent;
    }
    .btn-brand-outline:hover {
      background: rgba(255,255,255,0.1);
      border-color: #FFFFFF;
      color: #FFFFFF;
      transform: translateY(-2px);
    }

    /* Hero 斜向错位排版 */
    .hero-section {
      background: linear-gradient(135deg, rgba(11,27,43,0.94) 0%, rgba(8,16,24,0.96) 100%), url('/assets/images/f82c48d2da63eeee.jpg') center/cover no-repeat;
      padding: 90px 0 110px;
      color: #FFFFFF;
      position: relative;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: rgba(0,210,133,0.15);
      border: 1px solid rgba(0,210,133,0.35);
      color: var(--brand-secondary);
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .hero-title {
      color: #FFFFFF;
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
    }
    .hero-lead {
      color: rgba(255,255,255,0.85);
      font-size: 1.05rem;
      line-height: 1.85;
      margin-bottom: 32px;
    }
    .hero-visual-card {
      position: relative;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
      border: 1px solid rgba(255,255,255,0.12);
      transform: perspective(1000px) rotateY(-4deg) rotateX(2deg);
      transition: var(--transition-smooth);
    }
    .hero-visual-card:hover {
      transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
    }
    .hero-kpi-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      padding-top: 24px;
      border-top: 1px solid rgba(255,255,255,0.12);
    }
    .hero-kpi-num {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--brand-secondary);
      line-height: 1.2;
    }
    .hero-kpi-desc {
      font-size: 13px;
      color: rgba(255,255,255,0.7);
    }

    /* 板块通用 */
    .app-section {
      padding: 85px 0;
      position: relative;
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 12px;
      background: rgba(11,27,43,0.06);
      color: var(--brand-primary);
    }
    .section-title {
      font-size: 2.1rem;
      margin-bottom: 14px;
    }
    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 760px;
    }

    /* 卡片体系 */
    .service-card {
      background: #FFFFFF;
      border-radius: var(--card-radius);
      border: 1px solid rgba(0,0,0,0.07);
      padding: 32px 28px;
      height: 100%;
      transition: var(--transition-smooth);
      position: relative;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-soft);
      border-color: rgba(0,210,133,0.4);
    }
    .service-card-icon {
      width: 54px;
      height: 54px;
      border-radius: 10px;
      background: rgba(11,27,43,0.05);
      color: var(--brand-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 20px;
      transition: var(--transition-smooth);
    }
    .service-card:hover .service-card-icon {
      background: var(--brand-secondary);
      color: var(--brand-primary);
    }

    /* 痛点对比卡片 */
    .pain-card {
      background: #FFFFFF;
      border-radius: var(--card-radius);
      border-left: 4px solid #EF4444;
      padding: 24px;
      box-shadow: 0 4px 16px rgba(0,0,0,0.04);
      height: 100%;
    }
    .solution-contrast-card {
      background: #FFFFFF;
      border-radius: var(--card-radius);
      border-left: 4px solid var(--brand-secondary);
      padding: 24px;
      box-shadow: 0 4px 16px rgba(0,0,0,0.04);
      height: 100%;
    }

    /* 方案卡片 */
    .solution-showcase-card {
      background: #FFFFFF;
      border-radius: var(--card-radius);
      overflow: hidden;
      border: 1px solid rgba(0,0,0,0.08);
      height: 100%;
      box-shadow: 0 8px 24px rgba(0,0,0,0.03);
      transition: var(--transition-smooth);
    }
    .solution-showcase-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-soft);
    }
    .solution-img-wrapper {
      height: 220px;
      overflow: hidden;
      position: relative;
    }
    .solution-img-wrapper img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .solution-showcase-card:hover .solution-img-wrapper img {
      transform: scale(1.05);
    }

    /* 流程步骤条 */
    .step-node-box {
      background: #FFFFFF;
      border: 1px solid rgba(0,0,0,0.06);
      border-radius: var(--card-radius);
      padding: 30px 24px;
      position: relative;
      height: 100%;
    }
    .step-node-number {
      font-size: 2.2rem;
      font-weight: 800;
      color: rgba(11,27,43,0.12);
      line-height: 1;
      margin-bottom: 12px;
    }

    /* 深色案例区 */
    .dark-immersive-section {
      background-color: var(--brand-dark);
      color: #FFFFFF;
    }
    .dark-immersive-section h2, .dark-immersive-section h3, .dark-immersive-section h4 {
      color: #FFFFFF;
    }
    .dark-case-card {
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--card-radius);
      padding: 32px;
      transition: var(--transition-smooth);
    }
    .dark-case-card:hover {
      background: rgba(255,255,255,0.07);
      border-color: var(--brand-secondary);
    }

    /* 关键指标条 */
    .stats-counter-bar {
      background: linear-gradient(135deg, var(--brand-primary), #11283F);
      color: #FFFFFF;
      border-radius: 16px;
      padding: 48px 36px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.12);
    }
    .stats-number {
      font-size: 3rem;
      font-weight: 800;
      color: var(--brand-secondary);
      line-height: 1;
      margin-bottom: 8px;
    }

    /* 客户评价卡片 */
    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid rgba(0,0,0,0.07);
      border-radius: var(--card-radius);
      padding: 30px;
      height: 100%;
      box-shadow: 0 4px 16px rgba(0,0,0,0.03);
    }
    .quote-badge {
      font-size: 32px;
      color: var(--brand-secondary);
      line-height: 1;
      margin-bottom: 12px;
    }

    /* 票档套餐对比 */
    .pricing-card {
      background: #FFFFFF;
      border-radius: 14px;
      border: 1px solid rgba(0,0,0,0.08);
      padding: 36px 28px;
      position: relative;
      height: 100%;
      transition: var(--transition-smooth);
    }
    .pricing-card.featured {
      border: 2px solid var(--brand-secondary);
      box-shadow: 0 16px 36px -8px rgba(0,210,133,0.22);
    }
    .pricing-badge-popular {
      position: absolute;
      top: -14px;
      right: 24px;
      background: var(--brand-secondary);
      color: var(--brand-primary);
      font-size: 12px;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 20px;
    }

    /* 资讯卡 */
    .news-article-card {
      background: #FFFFFF;
      border-radius: var(--card-radius);
      border: 1px solid rgba(0,0,0,0.06);
      overflow: hidden;
      height: 100%;
      transition: var(--transition-smooth);
    }
    .news-article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-soft);
    }
    .news-thumb-box {
      height: 180px;
      overflow: hidden;
    }
    .news-thumb-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* FAQ 手风琴重塑 */
    .custom-accordion .accordion-item {
      border: 1px solid rgba(0,0,0,0.08);
      margin-bottom: 12px;
      border-radius: 8px !important;
      overflow: hidden;
    }
    .custom-accordion .accordion-button {
      font-weight: 600;
      color: var(--brand-primary);
      padding: 18px 22px;
      background: #FFFFFF;
      box-shadow: none;
    }
    .custom-accordion .accordion-button:not(.collapsed) {
      color: var(--brand-primary);
      background-color: var(--brand-subtle);
    }
    .custom-accordion .accordion-body {
      padding: 18px 22px;
      color: #475569;
      font-size: 14.5px;
      line-height: 1.8;
      background: #FFFFFF;
    }

    /* 预约表单收口 */
    .cta-lead-section {
      background: linear-gradient(135deg, #0B1B2B 0%, #15314F 100%);
      color: #FFFFFF;
      padding: 85px 0;
    }
    .form-dark-box {
      background: #FFFFFF;
      border-radius: 14px;
      padding: 36px 32px;
      box-shadow: 0 20px 45px rgba(0,0,0,0.2);
      color: var(--text-main);
    }

    /* 页脚 */
    .site-footer {
      background: var(--brand-dark);
      color: rgba(255,255,255,0.7);
      padding: 70px 0 30px;
      font-size: 14px;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    .footer-col-title {
      color: #FFFFFF;
      font-weight: 700;
      font-size: 16px;
      margin-bottom: 20px;
    }
    .site-footer a {
      color: rgba(255,255,255,0.65);
      text-decoration: none;
      transition: var(--transition-smooth);
    }
    .site-footer a:hover {
      color: var(--brand-secondary);
    }
    .footer-bottom-bar {
      border-top: 1px solid rgba(255,255,255,0.08);
      margin-top: 50px;
      padding-top: 25px;
      font-size: 13px;
    }

    /* 移动端细化 */
    @media (max-width: 991px) {
      .hero-visual-card {
        transform: none !important;
        margin-top: 40px;
      }
      .hero-title {
        font-size: 2.2rem;
      }
      .stats-number {
        font-size: 2.3rem;
      }
    }