/* === BASE STYLES === */:root {
      --color-1: #0a0f1e;
      --color-2: #051028;
      --color-3: #0d1b3e;
      --color-4: #00d4ff;
      --color-5: #00a8cc;
      --color-6: #ffffff;
      --color-7: #b8c8e8;
      --color-8: #1a2a4a;
      --color-9: #0099bb;
      --color-10: #e8f4ff;
      --color-accent: #00d4ff;
      --color-accent-2: #0077aa;
      --color-gold: #ffd700;
      --color-card-bg: rgba(13, 27, 62, 0.85);
      --color-border: rgba(0, 212, 255, 0.2);
      --space-1: 0.5rem;
      --space-2: 1rem;
      --space-3: 1.5rem;
      --space-4: 2rem;
      --space-5: 3rem;
      --space-6: 4rem;
      --space-7: 6rem;
      --radius-1: 6px;
      --radius-2: 12px;
      --radius-3: 20px;
      --shadow-1: 0 4px 20px rgba(0, 212, 255, 0.15);
      --shadow-2: 0 8px 40px rgba(0, 212, 255, 0.25);
      --shadow-3: 0 20px 60px rgba(0, 0, 0, 0.5);
      --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
      --transition-1: 0.3s ease;
      --transition-2: 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    }

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

    html, body {
      overflow-x: hidden;
      max-width: 100vw;
      font-family: var(--font-main);
      background-color: var(--color-1);
      color: var(--color-6);
      line-height: 1.7;
      scroll-behavior: smooth;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin-inline: auto;
      padding-inline: var(--space-3);
    }

    /* Utility */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: var(--space-1);
      font-weight: 700;
      text-decoration: none;
      border: none;
      cursor: pointer;
      transition: all var(--transition-1);
      letter-spacing: 0.5px;
      border-radius: var(--radius-2);
      white-space: nowrap;
    }

    .btn--primary {
      background: linear-gradient(135deg, var(--color-4), var(--color-5));
      color: var(--color-1);
      padding: 0.85rem 2rem;
      font-size: 1rem;
      box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
    }

    .btn--primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 35px rgba(0, 212, 255, 0.7);
      color: var(--color-1);
      background: linear-gradient(135deg, #33deff, var(--color-4));
    }

    .btn--large {
      padding: 1.1rem 2.8rem;
      font-size: 1.15rem;
      border-radius: var(--radius-3);
    }

    .btn--gold {
      background: linear-gradient(135deg, var(--color-gold), #ffaa00);
      color: #1a0a00;
      box-shadow: 0 0 25px rgba(255, 215, 0, 0.5);
    }

    .btn--gold:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 40px rgba(255, 215, 0, 0.8);
      color: #1a0a00;
      background: linear-gradient(135deg, #ffe44d, var(--color-gold));
    }

    /* Card base */
    .card {
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-2);
      padding: var(--space-4);
      transition: all var(--transition-2);
      backdrop-filter: blur(10px);
    }

    .card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-2);
      border-color: rgba(0, 212, 255, 0.5);
    }

    .card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--color-4);
      margin-bottom: var(--space-2);
    }

    .card p {
      color: var(--color-7);
      font-size: 0.95rem;
    }

    /* Section common */
    section {
      padding-block: var(--space-6);
    }

    section h2 {
      font-size: clamp(1.8rem, 4vw, 2.8rem);
      font-weight: 800;
      color: var(--color-6);
      margin-bottom: var(--space-4);
      line-height: 1.2;
    }

    section p {
      color: var(--color-7);
      margin-bottom: var(--space-3);
      font-size: 1rem;
    }

    section p:last-child { margin-bottom: 0; }

    section a:not(.btn) {
      color: var(--color-4);
      text-decoration: underline;
      text-underline-offset: 3px;
      transition: color var(--transition-1);
    }

    section a:not(.btn):hover { color: var(--color-6); }

    /* Section divider */
    .section--dark { background: var(--color-2); }
    .section--mid { background: var(--color-3); }
    .section--alt { background: rgba(0, 212, 255, 0.04); }

    /* Glow heading accent */
    .heading--accent {
      position: relative;
      display: inline-block;
    }

    .heading--accent span {
      color: var(--color-4);
      text-shadow: 0 0 20px rgba(0, 212, 255, 0.6);
    }

    /* Content images */
    .content-image {
      margin: 0 0 var(--space-4);
      border-radius: var(--radius-2);
      overflow: hidden;
      border: 1px solid var(--color-border);
    }

    .content-image img {
      width: 100%;
      height: auto;
      display: block;
      max-height: 480px;
      object-fit: cover;
      object-position: center;
    }

    /* Info card (aside) */
    .info-card--aside {
      background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 120, 170, 0.1));
      border: 1px solid var(--color-border);
      border-left: 4px solid var(--color-4);
      border-radius: var(--radius-2);
      padding: var(--space-3) var(--space-4);
      margin-block: var(--space-4);
    }

    .info-card--aside p {
      color: var(--color-10);
      margin: 0;
      font-size: 0.95rem;
    }

    /* Table responsive */
    .table-responsive {
      border-radius: var(--radius-2);
      overflow: hidden;
      border: 1px solid var(--color-border);
    }

    .feature-table {
      width: 100%;
      border-collapse: collapse;
      background: var(--color-card-bg);
    }

    .feature-table thead {
      background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 150, 200, 0.2));
    }

    .feature-table th {
      padding: var(--space-2) var(--space-3);
      text-align: left;
      font-weight: 700;
      color: var(--color-4);
      font-size: 0.9rem;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      border-bottom: 1px solid var(--color-border);
    }

    .feature-table td {
      padding: var(--space-2) var(--space-3);
      color: var(--color-7);
      font-size: 0.95rem;
      border-bottom: 1px solid rgba(0, 212, 255, 0.08);
    }

    .feature-table tbody tr:hover {
      background: rgba(0, 212, 255, 0.05);
    }

    .feature-table tbody tr:last-child td { border-bottom: none; }

    /* Lists */
    .checklist {
      list-style: none;
      padding: 0;
    }

    .checklist li {
      color: var(--color-7);
      padding: var(--space-2) 0 var(--space-2) 2rem;
      border-bottom: 1px solid rgba(0, 212, 255, 0.08);
      position: relative;
      font-size: 0.95rem;
    }

    .checklist li::before {
      content: "✓";
      position: absolute;
      left: 0;
      top: var(--space-2);
      color: var(--color-4);
      font-weight: 700;
    }

    .checklist li:last-child { border-bottom: none; }

    .feature-list {
      list-style: none;
      padding: 0;
      display: grid;
      gap: var(--space-2);
    }

    .feature-list li {
      color: var(--color-7);
      padding: 0.75rem 0 0.75rem 1.75rem;
      position: relative;
      font-size: 0.95rem;
      border-bottom: 1px solid rgba(0, 212, 255, 0.08);
    }

    .feature-list li::before {
      content: "›";
      position: absolute;
      left: 0;
      color: var(--color-4);
      font-size: 1.3rem;
      font-weight: 700;
      line-height: 1.2;
    }

    .numbered-list {
      padding-left: var(--space-4);
      color: var(--color-7);
    }

    .numbered-list li {
      padding: 0.4rem 0;
      font-size: 0.95rem;
    }

    /* Steps timeline */
    .steps-list {
      list-style: none;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: var(--space-2);
      margin-block: var(--space-4);
    }

    .timeline-item {
      display: flex;
      align-items: center;
      gap: var(--space-3);
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-2);
      padding: var(--space-2) var(--space-3);
      transition: all var(--transition-1);
    }

    .timeline-item:hover {
      border-color: rgba(0, 212, 255, 0.5);
      background: rgba(0, 212, 255, 0.07);
    }

    .step-number {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      min-width: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--color-4), var(--color-5));
      color: var(--color-1);
      font-weight: 800;
      font-size: 1rem;
    }

    .step-content { color: var(--color-7); font-size: 0.95rem; }
    .step-content strong { color: var(--color-6); }

    /* Grid systems */
    .cards-grid {
      display: grid;
      gap: var(--space-3);
    }

    .cards-grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
    .cards-grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
    .cards-grid--4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

    /* Stat card */
    .stat-card {
      text-align: center;
      padding: var(--space-4) var(--space-3);
    }

    .stat-card__value {
      display: block;
      font-size: clamp(1.3rem, 3vw, 2rem);
      font-weight: 800;
      color: var(--color-4);
      text-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
      margin-bottom: var(--space-1);
      line-height: 1.2;
    }

    .stat-card p {
      font-size: 0.85rem;
      color: var(--color-7);
      margin: 0;
    }

    /* Accordion */
    .accordion {
      display: flex;
      flex-direction: column;
      gap: var(--space-2);
    }

    .accordion-item {
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-2);
      overflow: hidden;
      transition: all var(--transition-1);
    }

    .accordion-item:hover { border-color: rgba(0, 212, 255, 0.4); }

    .accordion-header {
      padding: var(--space-3) var(--space-4);
      cursor: pointer;
      font-size: 1rem;
      font-weight: 600;
      color: var(--color-6);
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      margin: 0;
    }

    .accordion-header::after {
      content: "+";
      font-size: 1.5rem;
      color: var(--color-4);
      transition: transform var(--transition-1);
      flex-shrink: 0;
      margin-left: var(--space-2);
    }

    .accordion-header[aria-expanded="true"]::after { transform: rotate(45deg); }

    .accordion-body {
      padding: 0 var(--space-4) var(--space-3);
      display: none;
    }

    .accordion-body p {
      color: var(--color-7);
      margin: 0;
      font-size: 0.95rem;
    }

    .accordion-body--open { display: block; }

    /* Promo card */
    .promo-card { overflow: hidden; }

    .promo-card .content-image { margin-bottom: var(--space-3); }

    /* === LAYOUT STYLES === */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(5, 16, 40, 0.95);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--color-border);
    }

    .site-header .container {
      display: flex;
      align-items: center;
      gap: var(--space-3);
      padding-block: var(--space-2);
      flex-wrap: wrap;
    }

    .logo {
      flex-shrink: 0;
      z-index: 10;
    }

    .logo-text {
      font-size: 1.8rem;
      font-weight: 900;
      background: linear-gradient(135deg, var(--color-4), var(--color-gold));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: -0.5px;
      text-shadow: none;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-1);
      padding: 8px;
      cursor: pointer;
      margin-left: auto;
      z-index: 10;
    }

    .hamburger span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--color-4);
      border-radius: 2px;
      transition: all var(--transition-1);
    }

    .hamburger[aria-expanded="true"] span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    .hamburger[aria-expanded="true"] span:nth-child(2) {
      opacity: 0;
    }

    .hamburger[aria-expanded="true"] span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    header nav {
      flex: 1;
    }

    .nav-list {
      display: flex;
      align-items: center;
      gap: var(--space-1);
      list-style: none;
      padding: 0;
      margin: 0;
      flex-wrap: wrap;
    }

    .nav-list a {
      display: block;
      padding: 0.5rem 0.75rem;
      color: var(--color-7);
      text-decoration: none;
      font-size: 0.9rem;
      font-weight: 500;
      border-radius: var(--radius-1);
      transition: all var(--transition-1);
      white-space: nowrap;
    }

    .nav-list a:hover {
      color: var(--color-4);
      background: rgba(0, 212, 255, 0.1);
    }

    .header-cta {
      flex-shrink: 0;
      max-width: 200px;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    /* Footer */
    .site-footer {
      background: var(--color-2);
      border-top: 1px solid var(--color-border);
      padding-block: var(--space-5);
    }

    .footer-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: var(--space-3);
      text-align: center;
    }

    .footer-logo .logo-text { font-size: 2rem; }

    .footer-nav-list {
      display: flex;
      gap: var(--space-3);
      list-style: none;
      padding: 0;
      flex-wrap: wrap;
      justify-content: center;
    }

    .footer-nav-list a {
      color: var(--color-7);
      text-decoration: none;
      font-size: 0.9rem;
      transition: color var(--transition-1);
    }

    .footer-nav-list a:hover { color: var(--color-4); }

    .footer-disclaimer {
      max-width: 600px;
      font-size: 0.8rem;
      color: rgba(184, 200, 232, 0.85);
      line-height: 1.6;
      margin: 0;
    }

    .footer-copyright {
      font-size: 0.8rem;
      color: rgba(184, 200, 232, 0.7);
      margin: 0;
    }

    @media (max-width: 767px) {
      .hamburger { display: flex; }

      header nav {
        width: 100%;
        order: 3;
        flex-basis: 100%;
        display: none;
      }

      header nav.nav--open { display: block; }

      .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding-block: var(--space-2);
        border-top: 1px solid var(--color-border);
      }

      .nav-list a {
        padding: 0.8rem var(--space-2);
        border-bottom: 1px solid rgba(0, 212, 255, 0.06);
      }

      .header-cta {
        display: none;
      }
    }

    @media (min-width: 768px) {
      .site-header .container {
        flex-wrap: nowrap;
      }
    }

@media (max-width: 767px) {
      .hamburger { display: flex; }

      header nav {
        width: 100%;
        order: 3;
        flex-basis: 100%;
        display: none;
      }

      header nav.nav--open { display: block; }

      .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding-block: var(--space-2);
        border-top: 1px solid var(--color-border);
      }

      .nav-list a {
        padding: 0.8rem var(--space-2);
        border-bottom: 1px solid rgba(0, 212, 255, 0.06);
      }

      .header-cta {
        display: none;
      }
    }

@media (min-width: 768px) {
      .site-header .container {
        flex-wrap: nowrap;
      }
    }

@media (max-width: 767px) {
      section { padding-block: var(--space-5); }

      .hero-section {
        min-height: 80vh;
      }

      .hero-section .container {
        padding-block: var(--space-6);
      }

      .hero__stats {
        gap: var(--space-3);
      }

      .cards-grid--4 {
        grid-template-columns: repeat(2, 1fr);
      }

      .feature-table th,
      .feature-table td {
        padding: var(--space-2);
        font-size: 0.85rem;
      }

      .accordion-header {
        padding: var(--space-2) var(--space-3);
        font-size: 0.95rem;
      }

      .accordion-body {
        padding: 0 var(--space-3) var(--space-2);
      }
    }