/* roulang page: index */
:root {
      --primary: #0066FF;
      --primary-dark: #004ecc;
      --primary-light: #e6f0ff;
      --accent-cyan: #00E5FF;
      --accent-orange: #FF6B00;
      --bg-dark: #0A0F1D;
      --bg-dark-card: #131B2E;
      --bg-light: #F4F7FB;
      --bg-white: #FFFFFF;
      --text-main: #0B132B;
      --text-body: #3A4560;
      --text-muted: #7A889B;
      --text-inverse: #FFFFFF;
      --border-color: rgba(0, 102, 255, 0.12);
      --shadow-sm: 0 4px 12px rgba(0, 20, 60, 0.05);
      --shadow-md: 0 10px 30px -10px rgba(0, 20, 60, 0.08);
      --shadow-lg: 0 20px 40px -15px rgba(0, 102, 255, 0.15);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: var(--font-family);
      color: var(--text-body);
      background-color: var(--bg-white);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    button, input, textarea, select {
      font-family: inherit;
      font-size: 1rem;
      outline: none;
      border: none;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* Section Styling */
    section {
      padding: 90px 0;
      position: relative;
    }

    .section-light {
      background-color: var(--bg-light);
    }

    .section-white {
      background-color: var(--bg-white);
    }

    .section-dark {
      background-color: var(--bg-dark);
      color: var(--text-inverse);
    }

    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 60px auto;
    }

    .section-header.text-left {
      text-align: left;
      margin-left: 0;
    }

    .badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--primary-light);
      color: var(--primary);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }

    .section-dark .badge-tag {
      background: rgba(0, 229, 255, 0.15);
      color: var(--accent-cyan);
      border: 1px solid rgba(0, 229, 255, 0.3);
    }

    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 20px;
    }

    .section-dark .section-title {
      color: var(--text-inverse);
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    .section-dark .section-desc {
      color: #9AA8C2;
    }

    /* Top Bar & Navigation */
    .top-bar {
      background-color: #070B16;
      color: #8C9BB0;
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 74px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
    }

    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }

    .nav-links a {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      padding: 6px 0;
      position: relative;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary);
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: width 0.25s ease;
    }

    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }

    .nav-cta-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      background: var(--primary);
      color: #fff !important;
      border-radius: var(--radius-sm);
      font-weight: 600;
      box-shadow: 0 4px 14px rgba(0, 102, 255, 0.3);
      transition: all 0.25s ease;
    }

    .nav-cta-btn:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
    }

    .mobile-menu-btn {
      display: none;
      background: transparent;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* Buttons & Components */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 28px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: all 0.25s ease;
      cursor: pointer;
      font-size: 1rem;
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 6px 20px rgba(0, 102, 255, 0.35);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 10px 25px rgba(0, 102, 255, 0.45);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.12);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.25);
      backdrop-filter: blur(8px);
    }

    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.22);
      transform: translateY(-2px);
    }

    .btn-outline {
      border: 1px solid var(--primary);
      color: var(--primary);
      background: transparent;
    }

    .btn-outline:hover {
      background: var(--primary-light);
    }

    /* Hero Section (Video / Stage Hybrid) */
    .hero-section {
      position: relative;
      min-height: 640px;
      padding: 110px 0 130px;
      background: linear-gradient(135deg, #060a14 0%, #0d172e 100%);
      color: #fff;
      overflow: hidden;
      clip-path: polygon(0 0, 100% 0, 100% 96%, 0 100%);
    }

    .hero-bg-overlay {
      position: absolute;
      inset: 0;
      background-image: radial-gradient(rgba(0, 229, 255, 0.12) 1px, transparent 1px), radial-gradient(rgba(0, 102, 255, 0.1) 1px, transparent 1px);
      background-size: 40px 40px;
      background-position: 0 0, 20px 20px;
      opacity: 0.6;
    }

    .hero-media-cover {
      position: absolute;
      top: 0;
      right: 0;
      width: 60%;
      height: 100%;
      opacity: 0.28;
      object-fit: cover;
      pointer-events: none;
      mask-image: linear-gradient(to left, rgba(0,0,0,1) 0%, transparent 90%);
      -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,1) 0%, transparent 90%);
    }

    .hero-content-wrapper {
      position: relative;
      z-index: 2;
      max-width: 800px;
    }

    .hero-h1 {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 24px;
      background: linear-gradient(100deg, #FFFFFF 30%, var(--accent-cyan) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtext {
      font-size: 1.125rem;
      color: #A0B2CD;
      line-height: 1.85;
      margin-bottom: 36px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 40px;
    }

    .hero-video-badge {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 10px 18px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(0, 229, 255, 0.25);
      border-radius: 30px;
      font-size: 0.9rem;
      color: var(--accent-cyan);
    }

    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent-cyan);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--accent-cyan);
      animation: pulse 1.8s infinite;
    }

    @keyframes pulse {
      0% { transform: scale(0.9); opacity: 0.7; }
      50% { transform: scale(1.3); opacity: 1; box-shadow: 0 0 14px var(--accent-cyan); }
      100% { transform: scale(0.9); opacity: 0.7; }
    }

    /* 1. Countdown / Urgent Upgrade Banner */
    .countdown-bar {
      background: #0F182E;
      border-bottom: 1px solid rgba(0, 102, 255, 0.2);
      padding: 18px 0;
      color: #fff;
    }

    .countdown-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }

    .countdown-text {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: #D1DBEA;
    }

    .countdown-pill {
      background: var(--accent-orange);
      color: #fff;
      padding: 2px 10px;
      border-radius: 4px;
      font-weight: 700;
      font-size: 0.8rem;
    }

    .countdown-timers {
      display: flex;
      gap: 10px;
      font-weight: 700;
    }

    .timer-block {
      background: rgba(255, 255, 255, 0.08);
      padding: 4px 10px;
      border-radius: 4px;
      color: var(--accent-cyan);
    }

    /* 2. Technical Architecture Section */
    .tech-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .tech-image-box {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(0, 102, 255, 0.15);
    }

    .tech-image-box img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .tech-spec-badge {
      position: absolute;
      bottom: 20px;
      left: 20px;
      background: rgba(10, 15, 29, 0.85);
      backdrop-filter: blur(10px);
      padding: 14px 20px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(0, 229, 255, 0.3);
      color: #fff;
    }

    .tech-spec-badge strong {
      display: block;
      color: var(--accent-cyan);
      font-size: 1.25rem;
    }

    .feature-points {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 20px;
      margin-top: 24px;
    }

    .feature-point-item {
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }

    .point-icon {
      flex-shrink: 0;
      width: 32px;
      height: 32px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    /* 3. Core Advantages Grid (3x2) */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .card-adv {
      background: var(--bg-white);
      padding: 36px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .card-adv::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 0;
      background: var(--primary);
      transition: height 0.3s ease;
    }

    .card-adv:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(0, 102, 255, 0.35);
    }

    .card-adv:hover::before {
      height: 100%;
    }

    .adv-icon {
      font-size: 2rem;
      margin-bottom: 20px;
      display: inline-block;
    }

    .adv-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .adv-desc {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 4. Solutions Matrix (3 Columns) */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .solution-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }

    .solution-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }

    .solution-thumb {
      height: 200px;
      overflow: hidden;
      position: relative;
    }

    .solution-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .solution-card:hover .solution-thumb img {
      transform: scale(1.05);
    }

    .solution-body {
      padding: 28px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .solution-body h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .solution-body p {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    /* 5. Deep Scenario Simulation (Dark Mode) */
    .scenario-tabs {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }

    .scenario-tab-btn {
      background: rgba(255, 255, 255, 0.06);
      color: #A0B2CD;
      padding: 12px 26px;
      border-radius: 30px;
      cursor: pointer;
      font-weight: 600;
      transition: all 0.25s ease;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .scenario-tab-btn.active,
    .scenario-tab-btn:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
      box-shadow: 0 4px 15px rgba(0, 102, 255, 0.4);
    }

    .scenario-display {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      background: var(--bg-dark-card);
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid rgba(0, 229, 255, 0.18);
    }

    .scenario-mockup {
      border-radius: var(--radius-md);
      overflow: hidden;
      position: relative;
    }

    .scenario-mockup img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }

    .scenario-info h3 {
      font-size: 1.5rem;
      color: #fff;
      margin-bottom: 16px;
    }

    .scenario-info p {
      color: #A0B2CD;
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .scenario-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .scenario-tag {
      font-size: 0.85rem;
      padding: 6px 14px;
      background: rgba(0, 229, 255, 0.1);
      color: var(--accent-cyan);
      border-radius: 4px;
      border: 1px solid rgba(0, 229, 255, 0.2);
    }

    /* 6. Comparison Table / Cards */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .compare-card {
      padding: 36px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

    .compare-card.traditional {
      background: #FFFFFF;
      border: 1px solid #E2E8F0;
    }

    .compare-card.our-system {
      background: #F0F6FF;
      border: 2px solid var(--primary);
      position: relative;
    }

    .compare-badge-flag {
      position: absolute;
      top: -14px;
      right: 24px;
      background: var(--primary);
      color: #fff;
      padding: 4px 14px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 700;
    }

    .compare-list {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .compare-list li {
      display: flex;
      gap: 12px;
      font-size: 0.95rem;
      line-height: 1.6;
    }

    /* 7. Key Metric Counters */
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .metric-box {
      padding: 32px 20px;
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .metric-number {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 8px;
      font-family: inherit;
    }

    .metric-label {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .metric-sub {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 8. Implementation Steps */
    .steps-chain {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .step-item {
      background: var(--bg-white);
      padding: 30px 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      position: relative;
    }

    .step-number {
      font-size: 1.75rem;
      font-weight: 900;
      color: rgba(0, 102, 255, 0.2);
      margin-bottom: 12px;
    }

    .step-item h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .step-item p {
      font-size: 0.9rem;
      color: var(--text-body);
      line-height: 1.65;
    }

    /* 9. Testimonials / User Evidence */
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .testi-card {
      background: var(--bg-white);
      padding: 32px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testi-quote {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 24px;
      position: relative;
    }

    .testi-user {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .testi-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    .testi-meta strong {
      display: block;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .testi-meta span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 10. Industry Insights / News Grid */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .news-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .news-thumb {
      height: 180px;
      overflow: hidden;
    }

    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .news-content {
      padding: 24px;
    }

    .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .news-content h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .news-content p {
      font-size: 0.9rem;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 11. FAQ Accordion */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
    }

    .faq-question {
      padding: 22px 28px;
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-question:hover {
      color: var(--primary);
    }

    .faq-toggle-icon {
      font-size: 1.25rem;
      transition: transform 0.3s ease;
      color: var(--primary);
    }

    .faq-answer {
      padding: 0 28px 22px 28px;
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.75;
      display: block;
    }

    /* 12. Security & Certification Badges */
    .cert-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .cert-box {
      text-align: center;
      padding: 24px 16px;
      background: var(--bg-light);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .cert-icon {
      font-size: 2rem;
      margin-bottom: 12px;
      color: var(--primary);
    }

    .cert-box h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .cert-box p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 13. High-Conversion Lead Form Section */
    .cta-banner-wrapper {
      background: linear-gradient(135deg, #0A1128 0%, #003399 100%);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: #fff;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
      box-shadow: var(--shadow-lg);
    }

    .cta-banner-info h2 {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 18px;
      color: #fff;
    }

    .cta-banner-info p {
      font-size: 1.05rem;
      color: #BACEE8;
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .form-card {
      background: #FFFFFF;
      padding: 36px 32px;
      border-radius: var(--radius-md);
      color: var(--text-main);
      box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    }

    .form-card h3 {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 20px;
      color: var(--text-main);
      text-align: center;
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-group label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid #D2DDEC;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      transition: border-color 0.25s ease;
    }

    .form-control:focus {
      border-color: var(--primary);
    }

    .form-submit-btn {
      width: 100%;
      padding: 14px;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 1.05rem;
      transition: background 0.25s ease;
      margin-top: 8px;
    }

    .form-submit-btn:hover {
      background: var(--primary-dark);
    }

    /* Footer */
    .site-footer {
      background: #060913;
      color: #8E9BAE;
      padding: 80px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 60px;
    }

    .footer-brand h4 {
      font-size: 1.4rem;
      color: #fff;
      margin-bottom: 16px;
      font-weight: 800;
    }

    .footer-brand p {
      line-height: 1.8;
      margin-bottom: 20px;
      color: #8E9BAE;
    }

    .footer-col h5 {
      font-size: 1.05rem;
      color: #fff;
      margin-bottom: 20px;
      font-weight: 700;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .footer-links a:hover {
      color: var(--accent-cyan);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 26px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
    }

    .footer-bottom a {
      color: #8E9BAE;
    }

    .footer-bottom a:hover {
      color: #fff;
    }

    /* Fixed Floating Conversion Bar */
    .fixed-float-bar {
      position: fixed;
      bottom: 24px;
      right: 24px;
      z-index: 999;
      display: flex;
      align-items: center;
      gap: 12px;
      background: rgba(10, 15, 29, 0.92);
      backdrop-filter: blur(12px);
      padding: 10px 18px;
      border-radius: 40px;
      border: 1px solid rgba(0, 229, 255, 0.3);
      box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    }

    .float-text {
      color: #fff;
      font-size: 0.875rem;
      font-weight: 600;
    }

    .float-btn {
      padding: 8px 16px;
      background: var(--primary);
      color: #fff;
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: 20px;
      transition: background 0.25s ease;
    }

    .float-btn:hover {
      background: var(--primary-dark);
    }

    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .hero-h1 {
        font-size: 2.4rem;
      }
      .tech-grid {
        grid-template-columns: 1fr;
      }
      .advantage-grid,
      .solution-grid,
      .testi-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenario-display {
        grid-template-columns: 1fr;
      }
      .metrics-row,
      .steps-chain,
      .cert-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .cta-banner-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      section {
        padding: 60px 0;
      }
      .nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-h1 {
        font-size: 2rem;
      }
      .hero-section {
        padding: 80px 0 100px;
      }
      .advantage-grid,
      .solution-grid,
      .testi-grid,
      .news-grid,
      .compare-container {
        grid-template-columns: 1fr;
      }
      .metrics-row,
      .steps-chain,
      .cert-row {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .fixed-float-bar {
        bottom: 12px;
        right: 12px;
        left: 12px;
        justify-content: space-between;
      }
    }