/* roulang page: index */
:root {
      --primary: #0A2540;
      --primary-dark: #051329;
      --accent-green: #00D084;
      --accent-orange: #FF4D15;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --card-shadow: 0 10px 30px -5px rgba(10, 37, 64, 0.08);
      --card-shadow-hover: 0 20px 35px -5px rgba(10, 37, 64, 0.15);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    }
    body {
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.65;
      font-size: 16px;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    ul, ol {
      list-style: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* Top Bar */
    .top-bar {
      background: var(--primary-dark);
      color: #94A3B8;
      font-size: 13px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #F1F5F9;
    }
    .top-badge span {
      background: var(--accent-orange);
      color: #FFF;
      font-size: 11px;
      padding: 2px 6px;
      border-radius: 4px;
      font-weight: 600;
    }
    .top-links {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .top-links span {
      color: var(--accent-green);
    }

    /* Main Header */
    .site-header {
      background: rgba(10, 37, 64, 0.96);
      backdrop-filter: blur(12px);
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 24px;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: -0.5px;
    }
    .brand-logo .logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--accent-green), #00A366);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #051329;
      font-weight: 900;
      font-size: 20px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      color: #E2E8F0;
      font-size: 15px;
      font-weight: 500;
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--accent-green);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-green);
      border-radius: 2px;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 24px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: none;
      gap: 8px;
    }
    .btn-green {
      background: var(--accent-green);
      color: var(--primary-dark);
      box-shadow: 0 4px 14px rgba(0, 208, 132, 0.35);
    }
    .btn-green:hover {
      background: #00BF79;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 208, 132, 0.45);
    }
    .btn-orange {
      background: var(--accent-orange);
      color: #FFF;
      box-shadow: 0 4px 14px rgba(255, 77, 21, 0.35);
    }
    .btn-orange:hover {
      background: #E03E0A;
      transform: translateY(-2px);
    }
    .btn-outline {
      border: 1px solid rgba(255, 255, 255, 0.25);
      color: #FFF;
      background: transparent;
    }
    .btn-outline:hover {
      border-color: var(--accent-green);
      color: var(--accent-green);
      background: rgba(0, 208, 132, 0.08);
    }

    /* Section Global */
    section {
      padding: 90px 0;
      position: relative;
    }
    .section-head {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 56px auto;
    }
    .section-badge {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--accent-green);
      background: rgba(0, 208, 132, 0.12);
      padding: 4px 14px;
      border-radius: 30px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 34px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. Hero Section */
    .hero-section {
      background: linear-gradient(135deg, rgba(5, 19, 41, 0.95), rgba(10, 37, 64, 0.92)), url('/assets/images/d036b5e65554ff0e.jpg') center/cover no-repeat;
      color: #FFF;
      padding: 100px 0 120px 0;
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-tagline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.1);
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 14px;
      font-weight: 500;
      margin-bottom: 24px;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .hero-tagline .pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--accent-green);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--accent-green);
    }
    .hero-title {
      font-size: 46px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-title span {
      color: var(--accent-green);
      background: linear-gradient(90deg, #00D084, #34E89E);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 17px;
      color: #CBD5E1;
      margin-bottom: 36px;
      line-height: 1.75;
      max-width: 600px;
    }
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 32px;
    }
    .hero-badges-strip {
      display: flex;
      gap: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
      padding-top: 24px;
    }
    .badge-item {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .badge-num {
      font-size: 20px;
      font-weight: 700;
      color: var(--accent-green);
    }
    .badge-label {
      font-size: 13px;
      color: #94A3B8;
    }
    .hero-media-card {
      position: relative;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 16px;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(8px);
    }
    .hero-media-card img {
      border-radius: var(--radius-md);
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .live-indicator {
      position: absolute;
      top: 30px;
      left: 30px;
      background: rgba(255, 77, 21, 0.95);
      color: #FFF;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 20px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 2. Countdown Match Banner */
    .countdown-section {
      background: #FFFFFF;
      padding: 40px 0;
      margin-top: -50px;
      position: relative;
      z-index: 10;
      border-radius: var(--radius-lg);
      box-shadow: var(--card-shadow);
      max-width: 1160px;
      margin-left: auto;
      margin-right: auto;
      border: 1px solid var(--border-color);
    }
    .countdown-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr 1fr;
      align-items: center;
      gap: 24px;
      padding: 0 32px;
    }
    .match-info-meta h4 {
      font-size: 18px;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .match-info-meta p {
      font-size: 14px;
      color: var(--text-muted);
    }
    .countdown-timer-box {
      display: flex;
      justify-content: center;
      gap: 16px;
    }
    .time-slot {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 8px 16px;
      text-align: center;
      min-width: 65px;
    }
    .time-slot .num {
      font-size: 22px;
      font-weight: 800;
      color: var(--accent-orange);
      display: block;
    }
    .time-slot .unit {
      font-size: 12px;
      color: var(--text-muted);
    }
    .match-action {
      text-align: right;
    }

    /* 3. Tech & Brand About */
    .about-section {
      background: #FFFFFF;
    }
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .about-content h3 {
      font-size: 28px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 20px;
      line-height: 1.35;
    }
    .about-content p {
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.8;
    }
    .tech-specs-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 30px;
    }
    .spec-item {
      background: var(--bg-light);
      padding: 14px 18px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--accent-green);
    }
    .spec-item strong {
      display: block;
      color: var(--primary);
      font-size: 15px;
      margin-bottom: 4px;
    }
    .spec-item span {
      font-size: 13px;
      color: var(--text-muted);
    }
    .about-img-box {
      position: relative;
    }
    .about-img-box img {
      border-radius: var(--radius-md);
      box-shadow: var(--card-shadow);
      width: 100%;
      height: 420px;
      object-fit: cover;
    }

    /* 4. Core Features */
    .features-section {
      background: var(--bg-light);
    }
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .feature-card {
      background: #FFFFFF;
      padding: 36px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
    }
    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--card-shadow-hover);
      border-color: rgba(0, 208, 132, 0.4);
    }
    .feature-icon-circle {
      width: 54px;
      height: 54px;
      background: rgba(0, 208, 132, 0.12);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      color: var(--accent-green);
      margin-bottom: 20px;
      font-weight: 800;
    }
    .feature-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .feature-card p {
      font-size: 14.5px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 5. Terminal Products */
    .products-section {
      background: #FFFFFF;
    }
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .product-card {
      background: var(--bg-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .product-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow);
    }
    .product-thumb {
      height: 200px;
      overflow: hidden;
    }
    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .product-card:hover .product-thumb img {
      transform: scale(1.05);
    }
    .product-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-tag {
      font-size: 12px;
      color: var(--accent-orange);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .product-body h3 {
      font-size: 20px;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .product-body p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
      flex-grow: 1;
    }

    /* 6. Technology Architecture */
    .tech-section {
      background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
      color: #FFFFFF;
    }
    .tech-section .section-title {
      color: #FFFFFF;
    }
    .tech-section .section-desc {
      color: #94A3B8;
    }
    .tech-architecture-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .tech-node {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 30px 20px;
      border-radius: var(--radius-md);
      text-align: center;
      transition: var(--transition);
    }
    .tech-node:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--accent-green);
    }
    .node-badge {
      display: inline-block;
      width: 40px;
      height: 40px;
      line-height: 40px;
      background: var(--accent-green);
      color: var(--primary-dark);
      border-radius: 50%;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .tech-node h4 {
      font-size: 18px;
      margin-bottom: 10px;
      color: #FFF;
    }
    .tech-node p {
      font-size: 13.5px;
      color: #CBD5E1;
      line-height: 1.6;
    }

    /* 7. User Stories & Scenarios */
    .stories-section {
      background: var(--bg-light);
    }
    .story-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .story-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
    }
    .story-badge {
      display: inline-block;
      font-size: 12px;
      color: #FFF;
      background: var(--primary);
      padding: 3px 10px;
      border-radius: 4px;
      margin-bottom: 16px;
    }
    .story-card h3 {
      font-size: 18px;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .story-card p {
      font-size: 14.5px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 8. Stats Strip */
    .stats-section {
      background: #FFFFFF;
      padding: 60px 0;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .stat-item .stat-num {
      font-size: 40px;
      font-weight: 900;
      color: var(--accent-orange);
      margin-bottom: 6px;
      letter-spacing: -1px;
    }
    .stat-item .stat-label {
      font-size: 15px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .stat-item .stat-desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 9. Reviews */
    .reviews-section {
      background: var(--bg-light);
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .review-card {
      background: #FFFFFF;
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      position: relative;
    }
    .review-header {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
    }
    .avatar-char {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 18px;
    }
    .reviewer-meta h4 {
      font-size: 16px;
      color: var(--primary);
      margin-bottom: 2px;
    }
    .reviewer-meta span {
      font-size: 12px;
      color: var(--text-muted);
    }
    .stars {
      color: #F59E0B;
      font-size: 14px;
      margin-bottom: 12px;
    }
    .review-card p {
      font-size: 14.5px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 10. News & Insights */
    .news-section {
      background: #FFFFFF;
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .news-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      box-shadow: var(--card-shadow);
    }
    .news-img {
      height: 190px;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: var(--accent-orange);
      font-weight: 600;
      margin-bottom: 8px;
    }
    .news-body h3 {
      font-size: 17px;
      color: var(--primary);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .news-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 11. FAQ Accordion */
    .faq-section {
      background: var(--bg-light);
    }
    .faq-wrapper {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      border: 1px solid var(--border-color);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      font-size: 16px;
      color: var(--primary);
    }
    .faq-icon {
      font-size: 18px;
      transition: var(--transition);
      color: var(--text-muted);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #FDFDFE;
    }
    .faq-answer-inner {
      padding: 0 24px 20px 24px;
      font-size: 14.5px;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
      color: var(--accent-green);
    }

    /* 12. Final Download CTA */
    .cta-section {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #FFFFFF;
      padding: 90px 0;
      text-align: center;
    }
    .cta-box {
      max-width: 800px;
      margin: 0 auto;
    }
    .cta-box h2 {
      font-size: 36px;
      font-weight: 800;
      margin-bottom: 18px;
      color: #FFFFFF;
    }
    .cta-box p {
      font-size: 16px;
      color: #CBD5E1;
      margin-bottom: 36px;
      line-height: 1.75;
    }
    .cta-buttons {
      display: flex;
      justify-content: center;
      gap: 20px;
      flex-wrap: wrap;
      margin-bottom: 30px;
    }
    .safe-tags {
      display: flex;
      justify-content: center;
      gap: 24px;
      color: #94A3B8;
      font-size: 13px;
    }
    .safe-tags span {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* Footer */
    .site-footer {
      background: #040D1A;
      color: #94A3B8;
      padding: 70px 0 30px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand .brand-logo {
      margin-bottom: 16px;
    }
    .footer-brand p {
      line-height: 1.7;
      font-size: 14px;
      color: #64748B;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 20px;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a:hover {
      color: var(--accent-green);
    }
    .footer-contact li {
      margin-bottom: 12px;
      display: flex;
      gap: 8px;
      line-height: 1.5;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #CBD5E1;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-grid, .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .feature-grid, .product-grid, .story-grid, .reviews-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .tech-architecture-grid, .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .hero-title {
        font-size: 32px;
      }
      .countdown-grid {
        grid-template-columns: 1fr;
        text-align: center;
      }
      .match-action {
        text-align: center;
      }
      .feature-grid, .product-grid, .story-grid, .reviews-grid, .news-grid, .tech-architecture-grid, .stats-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .hero-media-card img {
        height: 240px;
      }
      .about-img-box img {
        height: 260px;
      }
    }