/* Reset & Base Setup */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    :root {
      --aisitex-bg: #0B0F19;
      --aisitex-card-bg: rgba(18, 24, 38, 0.85);
      --aisitex-card-border: rgba(255, 255, 255, 0.08);
      --aisitex-primary: #F5A623;
      --aisitex-primary-hover: #D98E16;
      --aisitex-cyan: #00D2FF;
      --aisitex-text: #E2E8F0;
      --aisitex-text-muted: #94A3B8;
      --aisitex-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      --aisitex-font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;
      --aisitex-container-max: 1280px;
    }

    body {
      background-color: var(--aisitex-bg);
      color: var(--aisitex-text);
      font-family: var(--aisitex-font-sans);
      line-height: 1.6;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
      background-image: 
        radial-gradient(circle at 50% 0%, rgba(0, 210, 255, 0.05) 0%, transparent 70%),
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
      background-size: 100% 100%, 40px 40px, 40px 40px;
    }

    body.nav-open {
      overflow: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

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

    .aisitex-container {
      width: 100%;
      max-width: var(--aisitex-container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* Header & Navigation */
    .aisitex-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      transition: background-color 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
      border-bottom: 1px solid transparent;
      background-color: rgba(11, 15, 25, 0.6);
      backdrop-filter: blur(12px);
    }

    .aisitex-header.is-scrolled {
      background-color: rgba(11, 15, 25, 0.92);
      border-bottom-color: rgba(255, 255, 255, 0.1);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    }

    .aisitex-header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .aisitex-brand {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .aisitex-brand-logo {
      height: 32px;
      width: auto;
    }

    .aisitex-brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #FFFFFF;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .aisitex-brand-badge {
      font-size: 0.65rem;
      font-weight: 700;
      padding: 2px 6px;
      background: rgba(245, 166, 35, 0.15);
      color: var(--aisitex-primary);
      border: 1px solid rgba(245, 166, 35, 0.4);
      border-radius: 4px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .aisitex-nav {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .aisitex-nav-link {
      padding: 8px 16px;
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--aisitex-text-muted);
      border-radius: 6px;
      transition: all 0.2s ease;
      position: relative;
    }

    .aisitex-nav-link:hover {
      color: #FFFFFF;
      background: rgba(255, 255, 255, 0.05);
    }

    .aisitex-nav-link.active {
      color: #FFFFFF;
      font-weight: 600;
      background: rgba(0, 210, 255, 0.1);
      border: 1px solid rgba(0, 210, 255, 0.3);
    }

    .aisitex-menu-toggle {
      display: none;
      background: transparent;
      border: none;
      color: var(--aisitex-text);
      cursor: pointer;
      padding: 8px;
      border-radius: 6px;
    }

    .aisitex-menu-toggle:focus-visible {
      outline: 2px solid var(--aisitex-cyan);
    }

    /* Hero Section */
    .aisitex-hero {
      position: relative;
      padding-top: 130px;
      padding-bottom: 60px;
      min-height: 90vh;
      display: flex;
      flex-direction: column;
      justify-content: center;
      overflow: hidden;
    }

    .aisitex-hero-bg {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: -1;
      overflow: hidden;
    }

    .aisitex-hero-bg-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
      opacity: 0.35;
      filter: contrast(1.1) brightness(0.9);
    }

    .aisitex-hero-overlay {
      position: absolute;
      inset: 0;
      background: 
        linear-gradient(180deg, rgba(11, 15, 25, 0.7) 0%, rgba(11, 15, 25, 0.95) 70%, #0B0F19 100%),
        linear-gradient(90deg, rgba(11, 15, 25, 0.9) 0%, rgba(11, 15, 25, 0.4) 50%, rgba(11, 15, 25, 0.9) 100%);
    }

    .aisitex-hero-grid {
      display: grid;
      grid-template-columns: 5fr 7fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 1;
    }

    .aisitex-hero-content {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .aisitex-tagline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 12px;
      background: rgba(0, 210, 255, 0.08);
      border: 1px solid rgba(0, 210, 255, 0.25);
      border-radius: 20px;
      color: var(--aisitex-cyan);
      font-size: 0.875rem;
      font-weight: 600;
      width: fit-content;
    }

    .aisitex-tagline-dot {
      width: 6px;
      height: 6px;
      background-color: var(--aisitex-cyan);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--aisitex-cyan);
    }

    .aisitex-hero-title {
      font-size: clamp(2.2rem, 4vw, 3.2rem);
      font-weight: 900;
      line-height: 1.15;
      letter-spacing: -1px;
      color: #FFFFFF;
    }

    .aisitex-hero-title span {
      color: var(--aisitex-primary);
      display: block;
      margin-top: 4px;
    }

    .aisitex-hero-subtitle {
      font-size: 1.0625rem;
      color: var(--aisitex-text-muted);
      line-height: 1.7;
    }

    .aisitex-hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-top: 8px;
    }

    .aisitex-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 14px 28px;
      border-radius: 8px;
      font-size: 1rem;
      font-weight: 700;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      cursor: pointer;
      border: 1px solid transparent;
    }

    .aisitex-btn-primary {
      background: var(--aisitex-primary);
      color: #0B0F19;
      box-shadow: 0 4px 20px rgba(245, 166, 35, 0.3);
    }

    .aisitex-btn-primary:hover {
      background: var(--aisitex-primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 24px rgba(245, 166, 35, 0.45);
    }

    .aisitex-btn-secondary {
      background: rgba(255, 255, 255, 0.05);
      color: #FFFFFF;
      border-color: rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(4px);
    }

    .aisitex-btn-secondary:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(255, 255, 255, 0.3);
      transform: translateY(-2px);
    }

    /* Status Node Console Right Side */
    .aisitex-console {
      background: var(--aisitex-card-bg);
      border: 1px solid var(--aisitex-card-border);
      border-radius: 16px;
      padding: 24px;
      backdrop-filter: blur(16px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
      position: relative;
    }

    .aisitex-console::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--aisitex-cyan), transparent);
    }

    .aisitex-console-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding-bottom: 16px;
      margin-bottom: 20px;
    }

    .aisitex-console-title {
      font-size: 0.875rem;
      font-family: var(--aisitex-font-mono);
      color: var(--aisitex-text-muted);
      text-transform: uppercase;
      letter-spacing: 1px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .aisitex-console-title::before {
      content: '';
      width: 8px;
      height: 8px;
      background: var(--aisitex-cyan);
      border-radius: 50%;
    }

    .aisitex-status-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .aisitex-status-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      background: rgba(0, 0, 0, 0.3);
      border: 1px solid rgba(255, 255, 255, 0.04);
      border-radius: 8px;
      transition: border-color 0.2s ease;
    }

    .aisitex-status-item:hover {
      border-color: rgba(0, 210, 255, 0.3);
    }

    .aisitex-status-label {
      font-size: 0.875rem;
      color: var(--aisitex-text-muted);
    }

    .aisitex-status-val {
      font-size: 0.875rem;
      font-weight: 600;
      font-family: var(--aisitex-font-mono);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .aisitex-status-val.active {
      color: #10B981;
    }
    .aisitex-status-val.ready {
      color: var(--aisitex-cyan);
    }
    .aisitex-status-val.verified {
      color: var(--aisitex-primary);
    }

    /* Hero Bottom Bar */
    .aisitex-hero-bar {
      margin-top: 48px;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 16px;
      padding: 20px;
      background: rgba(18, 24, 38, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: 12px;
      position: relative;
      z-index: 1;
    }

    .aisitex-bar-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .aisitex-bar-icon {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: rgba(0, 210, 255, 0.1);
      border: 1px solid rgba(0, 210, 255, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--aisitex-cyan);
      flex-shrink: 0;
    }

    .aisitex-bar-text h4 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: #FFFFFF;
    }

    .aisitex-bar-text p {
      font-size: 0.8125rem;
      color: var(--aisitex-text-muted);
    }

    /* Section Layout Standard */
    .aisitex-section {
      padding: 96px 0;
      position: relative;
    }

    .aisitex-section-header {
      margin-bottom: 48px;
    }

    .aisitex-section-kicker {
      font-family: var(--aisitex-font-mono);
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--aisitex-cyan);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 8px;
      display: block;
    }

    .aisitex-section-title {
      font-size: clamp(1.75rem, 3vw, 2.375rem);
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: -0.5px;
    }

    .aisitex-section-desc {
      margin-top: 12px;
      font-size: 1rem;
      color: var(--aisitex-text-muted);
      max-width: 680px;
    }

    /* Section: Scenario Matrix */
    .aisitex-scenario-grid {
      display: grid;
      grid-template-columns: 5fr 7fr;
      gap: 40px;
      align-items: center;
    }

    .aisitex-scenario-media {
      position: relative;
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--aisitex-card-border);
      box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4);
    }

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

    .aisitex-scenario-media:hover .aisitex-scenario-img {
      transform: scale(1.03);
    }

    .aisitex-scenario-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .aisitex-scenario-card {
      background: var(--aisitex-card-bg);
      border: 1px solid var(--aisitex-card-border);
      border-radius: 12px;
      padding: 24px;
      transition: all 0.3s ease;
      position: relative;
    }

    .aisitex-scenario-card:hover {
      border-color: rgba(0, 210, 255, 0.4);
      transform: translateX(4px);
    }

    .aisitex-scenario-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 8px;
    }

    .aisitex-scenario-num {
      font-family: var(--aisitex-font-mono);
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--aisitex-primary);
      background: rgba(245, 166, 35, 0.1);
      padding: 2px 8px;
      border-radius: 4px;
    }

    .aisitex-scenario-card-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: #FFFFFF;
    }

    .aisitex-scenario-card-desc {
      font-size: 0.9375rem;
      color: var(--aisitex-text-muted);
      line-height: 1.6;
    }

    /* Section: Evidence Panel */
    .aisitex-evidence-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .aisitex-evidence-card {
      background: linear-gradient(135deg, rgba(18, 24, 38, 0.9) 0%, rgba(11, 15, 25, 0.95) 100%);
      border: 1px solid var(--aisitex-card-border);
      border-radius: 14px;
      padding: 28px 20px;
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .aisitex-evidence-card::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: var(--aisitex-card-border);
      transition: background 0.3s ease;
    }

    .aisitex-evidence-card:hover {
      transform: translateY(-4px);
      border-color: rgba(245, 166, 35, 0.3);
    }

    .aisitex-evidence-card:hover::after {
      background: var(--aisitex-primary);
    }

    .aisitex-metric {
      font-family: var(--aisitex-font-mono);
      font-size: 2.25rem;
      font-weight: 900;
      color: var(--aisitex-cyan);
      letter-spacing: -1px;
      margin-bottom: 6px;
    }

    .aisitex-metric-label {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 4px;
    }

    .aisitex-metric-detail {
      font-size: 0.8125rem;
      color: var(--aisitex-text-muted);
    }

    /* Section: Platform Nodes */
    .aisitex-platform-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      background: rgba(18, 24, 38, 0.5);
      border: 1px solid var(--aisitex-card-border);
      border-radius: 20px;
      padding: 40px;
    }

    .aisitex-app-preview {
      display: flex;
      justify-content: center;
      position: relative;
    }

    .aisitex-app-img {
      max-height: 480px;
      width: auto;
      filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.6));
    }

    .aisitex-platform-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .aisitex-platform-item {
      padding: 16px;
      background: rgba(11, 15, 25, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: 10px;
    }

    .aisitex-platform-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 6px;
    }

    .aisitex-platform-name {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
    }

    .aisitex-platform-req {
      font-size: 0.75rem;
      font-family: var(--aisitex-font-mono);
      color: var(--aisitex-cyan);
      background: rgba(0, 210, 255, 0.1);
      padding: 2px 6px;
      border-radius: 4px;
    }

    .aisitex-platform-feat {
      font-size: 0.875rem;
      color: var(--aisitex-text-muted);
    }

    /* Section: Action Hub */
    .aisitex-action-hub {
      background: linear-gradient(135deg, rgba(245, 166, 35, 0.1) 0%, rgba(0, 210, 255, 0.05) 100%);
      border: 1px solid rgba(245, 166, 35, 0.25);
      border-radius: 20px;
      padding: 48px;
      margin-bottom: 80px;
    }

    .aisitex-action-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      position: relative;
    }

    .aisitex-action-grid::before {
      content: '';
      position: absolute;
      top: 10%;
      bottom: 10%;
      left: 50%;
      width: 1px;
      background: rgba(255, 255, 255, 0.1);
      transform: translateX(-50%);
    }

    .aisitex-action-block {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 16px;
    }

    .aisitex-action-title {
      font-size: 1.5rem;
      font-weight: 800;
      color: #FFFFFF;
    }

    .aisitex-action-sub {
      font-size: 0.9375rem;
      color: var(--aisitex-text-muted);
    }

    /* FAQ Component */
    .aisitex-faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .aisitex-faq-card {
      background: var(--aisitex-card-bg);
      border: 1px solid var(--aisitex-card-border);
      border-radius: 12px;
      padding: 24px;
    }

    .aisitex-faq-q {
      font-size: 1.0625rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 10px;
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }

    .aisitex-faq-q::before {
      content: 'Q';
      font-family: var(--aisitex-font-mono);
      color: var(--aisitex-primary);
      font-weight: 800;
    }

    .aisitex-faq-a {
      font-size: 0.9375rem;
      color: var(--aisitex-text-muted);
      line-height: 1.6;
      padding-left: 24px;
    }

    /* Footer */
    .aisitex-footer {
      background-color: #070910;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 60px 0 30px;
      font-size: 0.875rem;
      color: var(--aisitex-text-muted);
    }

    .aisitex-footer-top {
      display: grid;
      grid-template-columns: 2fr repeat(3, 1fr);
      gap: 40px;
      margin-bottom: 40px;
    }

    .aisitex-footer-brand-desc {
      margin-top: 12px;
      font-size: 0.8125rem;
      line-height: 1.6;
      max-width: 300px;
    }

    .aisitex-footer-col-title {
      font-size: 0.875rem;
      font-weight: 700;
      color: #FFFFFF;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 16px;
    }

    .aisitex-footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

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

    .aisitex-footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.8125rem;
    }

    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .aisitex-hero-grid,
      .aisitex-scenario-grid,
      .aisitex-platform-wrapper {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .aisitex-evidence-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .aisitex-action-grid {
        grid-template-columns: 1fr;
      }

      .aisitex-action-grid::before {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .aisitex-menu-toggle {
        display: block;
      }

      .aisitex-nav {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(11, 15, 25, 0.98);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding: 24px;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
      }

      .aisitex-nav[aria-hidden="false"] {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
      }

      .aisitex-hero {
        padding-top: 100px;
      }

      .aisitex-evidence-grid,
      .aisitex-faq-grid {
        grid-template-columns: 1fr;
      }

      .aisitex-footer-top {
        grid-template-columns: 1fr 1fr;
      }

      .aisitex-action-hub {
        padding: 24px;
      }
    }

    @media (max-width: 480px) {
      .aisitex-footer-top {
        grid-template-columns: 1fr;
      }

      .aisitex-hero-actions {
        flex-direction: column;
        width: 100%;
      }

      .aisitex-btn {
        width: 100%;
      }
    }