/* roulang page: index */
:root {
      --primary: #1A4BFF;
      --primary-dark: #0F32C0;
      --primary-light: #4D76FF;
      --accent: #00E599;
      --accent-glow: rgba(0, 229, 153, 0.35);
      --brand-gradient: linear-gradient(135deg, #1A4BFF 0%, #00C6FF 100%);
      --dark-canvas: #0B0F19;
      --dark-card: #111827;
      --dark-border: #1E293B;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-xl: 24px;
      --radius-full: 9999px;
      --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.03);
      --shadow-md: 0 10px 30px -5px rgba(0, 0, 0, 0.05), 0 0 0 1px rgba(226, 232, 240, 0.8);
      --shadow-hover: 0 20px 40px -10px rgba(26, 75, 255, 0.14), 0 0 0 1px rgba(26, 75, 255, 0.2);
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    /* Base Reset & Typography */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-body);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--primary-dark);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    h1, h2, h3, h4, h5 {
      color: var(--text-main);
      font-weight: 700;
      line-height: 1.25;
      margin-bottom: 0.75rem;
    }

    /* Layout Container Overrides for Foundation */
    .grid-container {
      max-width: 1200px;
      padding-left: 20px;
      padding-right: 20px;
      margin: 0 auto;
    }

    /* Badges & Pills */
    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: var(--radius-full);
      font-size: 0.8125rem;
      font-weight: 600;
      background: rgba(26, 75, 255, 0.08);
      color: var(--primary);
      border: 1px solid rgba(26, 75, 255, 0.2);
      margin-bottom: 1rem;
    }
    .badge-pill.accent {
      background: rgba(0, 229, 153, 0.12);
      color: #00A86B;
      border-color: rgba(0, 229, 153, 0.4);
    }
    .badge-pill.dark {
      background: rgba(255, 255, 255, 0.08);
      color: var(--accent);
      border-color: rgba(0, 229, 153, 0.3);
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 48px;
      padding: 0 28px;
      border-radius: var(--radius-full);
      font-size: 0.9375rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
      text-decoration: none;
    }
    .btn-primary {
      background: var(--brand-gradient);
      color: #ffffff !important;
      box-shadow: 0 8px 20px rgba(26, 75, 255, 0.28);
    }
    .btn-primary:hover {
      box-shadow: 0 12px 28px rgba(26, 75, 255, 0.4);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: #FFFFFF;
      color: var(--text-main) !important;
      border: 1px solid var(--border-color);
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary) !important;
      background: rgba(26, 75, 255, 0.03);
      transform: translateY(-2px);
    }
    .btn-accent {
      background: var(--accent);
      color: #0B0F19 !important;
      font-weight: 700;
      box-shadow: 0 8px 20px var(--accent-glow);
    }
    .btn-accent:hover {
      background: #00F5A3;
      transform: translateY(-2px);
    }

    /* Double-line Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    }
    .top-bar-info {
      background: #F1F5F9;
      font-size: 0.75rem;
      color: var(--text-muted);
      padding: 5px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .top-bar-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .main-nav-bar {
      padding: 12px 0;
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .logo-icon {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: var(--brand-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
    }
    .logo-icon svg {
      width: 20px;
      height: 20px;
      fill: currentColor;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
      margin: 0;
    }
    .nav-links a {
      color: var(--text-body);
      font-size: 0.9375rem;
      font-weight: 500;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }
    .nav-cta-group {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    /* Section Global Settings */
    .app-section {
      padding: 90px 0;
      position: relative;
    }
    .section-alt {
      background-color: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }
    .section-header h2 {
      font-size: 2.125rem;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-header p {
      color: var(--text-muted);
      font-size: 1.0625rem;
      line-height: 1.7;
    }

    /* Cards System */
    .app-card {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      padding: 36px 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .app-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(26, 75, 255, 0.3);
    }
    .card-icon-wrap {
      width: 56px;
      height: 56px;
      border-radius: 14px;
      background: rgba(26, 75, 255, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      margin-bottom: 22px;
    }
    .card-icon-wrap svg {
      width: 28px;
      height: 28px;
      stroke-width: 2;
    }

    /* Section 1: Hero (No Big Image / Icon Matrix + Status Bar) */
    .hero-matrix-section {
      padding: 60px 0 80px 0;
      background: radial-gradient(circle at 50% 10%, rgba(26, 75, 255, 0.07) 0%, rgba(248, 250, 252, 0) 70%);
      border-bottom: 1px solid var(--border-color);
    }
    .hero-content-center {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-content-center h1 {
      font-size: 3rem;
      font-weight: 800;
      letter-spacing: -1px;
      line-height: 1.2;
      margin-bottom: 20px;
    }
    .hero-content-center h1 span {
      background: var(--brand-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.125rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 32px;
      text-align: center;
    }
    .hero-action-row {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .hero-status-strip {
      display: inline-flex;
      align-items: center;
      gap: 20px;
      background: #FFFFFF;
      padding: 10px 24px;
      border-radius: var(--radius-full);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 45px;
    }
    .hero-status-strip .dot {
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 8px var(--accent);
    }
    .hero-matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 15px;
    }
    .matrix-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 20px;
      border-radius: var(--radius-md);
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .matrix-item:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
    }
    .matrix-item .m-val {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .matrix-item .m-txt {
      font-size: 0.8125rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* Section 2: Core Matrix (Feature Overview) */
    .split-engine-box {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 50px;
      align-items: center;
    }
    .engine-media-card {
      position: relative;
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
      border: 1px solid var(--border-color);
    }
    .engine-media-card img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .engine-tag-overlay {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(11, 15, 25, 0.85);
      backdrop-filter: blur(8px);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }

    /* Section 3: Feature Grid (6 Cards) */
    .grid-features {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 12px;
    }

    /* Section 4: Products & Pricing Packages (3 Cards) */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .pricing-card {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      padding: 40px 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      position: relative;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .pricing-card.featured {
      border: 2px solid transparent;
      background-image: linear-gradient(#FFFFFF, #FFFFFF), var(--brand-gradient);
      background-origin: border-box;
      background-clip: padding-box, border-box;
      transform: translateY(-8px);
      box-shadow: 0 24px 48px -12px rgba(26, 75, 255, 0.2);
    }
    .pricing-featured-tag {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--brand-gradient);
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 16px;
      border-radius: var(--radius-full);
      box-shadow: 0 4px 12px rgba(26, 75, 255, 0.3);
    }
    .pricing-price {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin: 18px 0;
    }
    .pricing-price span {
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 400;
    }
    .pricing-features-list {
      list-style: none;
      margin: 24px 0;
      flex-grow: 1;
    }
    .pricing-features-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.875rem;
      color: var(--text-body);
      margin-bottom: 12px;
    }
    .pricing-features-list svg {
      color: var(--primary);
      flex-shrink: 0;
    }

    /* Section 5: Real-time Pipeline Dark Section */
    .dark-pipeline-section {
      background-color: var(--dark-canvas);
      background-image: radial-gradient(circle at 80% 20%, rgba(26, 75, 255, 0.25) 0%, transparent 60%);
      color: #F8FAFC;
      border-top: 1px solid var(--dark-border);
      border-bottom: 1px solid var(--dark-border);
    }
    .dark-pipeline-section h2 {
      color: #FFFFFF;
    }
    .dark-pipeline-section p {
      color: #94A3B8;
    }
    .pipeline-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
      margin-top: 40px;
    }
    .pipeline-step-card {
      background: var(--dark-card);
      border: 1px solid var(--dark-border);
      border-radius: var(--radius-lg);
      padding: 28px 22px;
      position: relative;
    }
    .pipeline-step-card::after {
      content: "→";
      position: absolute;
      right: -14px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--accent);
      font-size: 1.5rem;
      font-weight: bold;
      z-index: 2;
    }
    .pipeline-step-card:last-child::after {
      display: none;
    }
    .pipeline-step-num {
      font-size: 0.75rem;
      font-weight: 800;
      color: var(--accent);
      letter-spacing: 1px;
      margin-bottom: 8px;
    }

    /* Section 6: Sports Scenarios Matrix */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }
    .scenario-card {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .scenario-thumb {
      height: 240px;
      overflow: hidden;
      position: relative;
    }
    .scenario-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .scenario-card:hover .scenario-thumb img {
      transform: scale(1.05);
    }
    .scenario-body {
      padding: 28px;
    }

    /* Section 7: Case Studies / User Stories */
    .stories-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .story-card {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-color);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .metric-badge {
      display: inline-block;
      padding: 6px 12px;
      background: rgba(0, 229, 153, 0.1);
      color: #008F5A;
      font-size: 0.8125rem;
      font-weight: 700;
      border-radius: 6px;
      margin-bottom: 16px;
    }

    /* Section 8: Live Operational Data Strip */
    .data-stats-bar {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      padding: 40px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .stat-number {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* Section 9: Testimonials Wall */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .review-stars {
      color: #F59E0B;
      margin-bottom: 14px;
      font-size: 0.9rem;
    }
    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 20px;
      padding-top: 16px;
      border-top: 1px solid #F1F5F9;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--brand-gradient);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    /* Section 10: Sports Cutting News & Tech Insights */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-card-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-meta {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    /* Section 11: Technical FAQ Accordion */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item details summary {
      padding: 20px 24px;
      font-weight: 600;
      font-size: 1.0625rem;
      color: var(--text-main);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-item details summary::-webkit-details-marker {
      display: none;
    }
    .faq-item details summary::after {
      content: "+";
      font-size: 1.25rem;
      color: var(--primary);
      transition: transform 0.2s ease;
    }
    .faq-item details[open] summary::after {
      content: "−";
    }
    .faq-content {
      padding: 0 24px 22px 24px;
      color: var(--text-body);
      font-size: 0.9375rem;
      line-height: 1.7;
    }

    /* Section 12: Bottom Conversion Banner (One CTA Strip) */
    .cta-banner-section {
      background: var(--dark-canvas);
      background-image: var(--brand-gradient);
      padding: 85px 0;
      text-align: center;
      color: #FFFFFF;
      position: relative;
    }
    .cta-banner-section h2 {
      color: #FFFFFF;
      font-size: 2.5rem;
      margin-bottom: 18px;
    }
    .cta-banner-section p {
      color: rgba(255, 255, 255, 0.9);
      font-size: 1.125rem;
      max-width: 680px;
      margin: 0 auto 36px auto;
    }
    .cta-form-inline {
      display: flex;
      justify-content: center;
      gap: 12px;
      max-width: 520px;
      margin: 0 auto;
    }
    .cta-form-inline input {
      height: 48px;
      border-radius: var(--radius-full);
      border: 1px solid rgba(255, 255, 255, 0.4);
      padding: 0 20px;
      background: rgba(255, 255, 255, 0.15);
      color: #fff;
      font-size: 0.9375rem;
      outline: none;
      flex-grow: 1;
    }
    .cta-form-inline input::placeholder {
      color: rgba(255, 255, 255, 0.7);
    }
    .cta-form-inline input:focus {
      background: rgba(255, 255, 255, 0.25);
      border-color: #FFFFFF;
    }

    /* Footer System */
    .site-footer {
      background-color: var(--dark-canvas);
      color: #94A3B8;
      padding: 70px 0 30px 0;
      font-size: 0.875rem;
      border-top: 1px solid var(--dark-border);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1rem;
      margin-bottom: 20px;
      font-weight: 600;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      padding-top: 25px;
      border-top: 1px solid var(--dark-border);
      text-align: center;
      font-size: 0.8125rem;
      color: #64748B;
    }

    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .hero-content-center h1 {
        font-size: 2.375rem;
      }
      .grid-features, .pricing-grid, .stories-grid, .reviews-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .pipeline-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .pipeline-step-card::after {
        display: none;
      }
      .data-stats-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar-info {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .hero-content-center h1 {
        font-size: 1.875rem;
      }
      .split-engine-box, .scenarios-grid {
        grid-template-columns: 1fr;
      }
      .grid-features, .pricing-grid, .stories-grid, .reviews-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .hero-matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .pipeline-grid {
        grid-template-columns: 1fr;
      }
      .data-stats-bar {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-form-inline {
        flex-direction: column;
      }
      .cta-form-inline .btn {
        width: 100%;
      }
      .hero-status-strip {
        border-radius: var(--radius-md);
        flex-direction: column;
        gap: 6px;
      }
    }