/* === BASE STYLES === */:root {
      --primary: #0f1b2d;
      --primary-deep: #070d17;
      --surface: #162236;
      --surface-raised: #1e3050;
      --accent: #00c8ff;
      --accent-glow: rgba(0, 200, 255, 0.25);
      --accent-secondary: #ff6b35;
      --accent-secondary-glow: rgba(255, 107, 53, 0.25);
      --gold: #f5c842;
      --gold-light: #ffe57a;
      --text-primary: #f0f6ff;
      --text-secondary: #8aaccc;
      --text-muted: #5a7a99;
      --border-subtle: rgba(0, 200, 255, 0.15);
      --border-accent: rgba(0, 200, 255, 0.4);
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
      --shadow-glow: 0 0 40px rgba(0, 200, 255, 0.2);
      --radius-card: 16px;
      --radius-btn: 8px;
      --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html, body {
      overflow-x: hidden;
      max-width: 100vw;
      scroll-behavior: smooth;
    }

    body {
      font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
      background-color: var(--primary-deep);
      color: var(--text-primary);
      line-height: 1.7;
      font-size: 1rem;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    h1, h2, h3, h4 {
      line-height: 1.2;
      font-weight: 700;
      color: var(--text-primary);
    }

    h2 {
      font-size: clamp(1.6rem, 3vw, 2.4rem);
      margin-bottom: 1.2rem;
    }

    h3 {
      font-size: clamp(1.1rem, 2vw, 1.4rem);
      margin-bottom: 0.75rem;
    }

    p { color: var(--text-secondary); margin-bottom: 1rem; }
    p:last-child { margin-bottom: 0; }

    a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--gold); }

    ul { list-style: none; padding: 0; }

    .btn-primary,
    .cta-button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 28px;
      background: linear-gradient(135deg, var(--accent-secondary) 0%, #ff4500 100%);
      color: #fff !important;
      font-weight: 700;
      font-size: 0.95rem;
      letter-spacing: 0.5px;
      border-radius: var(--radius-btn);
      border: none;
      cursor: pointer;
      text-decoration: none;
      transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
      box-shadow: 0 4px 20px var(--accent-secondary-glow);
      white-space: nowrap;
    }

    .btn-primary:hover,
    .cta-button:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 30px rgba(255, 107, 53, 0.5);
      background: linear-gradient(135deg, #ff8050 0%, #ff6b35 100%);
      color: #fff !important;
    }

    .btn-primary:active,
    .cta-button:active {
      transform: translateY(0);
    }

    .info-card {
      background: var(--surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-card);
      padding: 28px;
      box-shadow: var(--shadow-card);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .info-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card), var(--shadow-glow);
      border-color: var(--border-accent);
    }

    .info-card.card-highlight {
      background: linear-gradient(145deg, #1a2f4a 0%, #0e2038 100%);
      border-color: var(--accent);
      box-shadow: var(--shadow-card), 0 0 30px rgba(0, 200, 255, 0.15);
    }

    .card-badge {
      display: inline-block;
      padding: 4px 14px;
      border-radius: 20px;
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 0.8px;
      text-transform: uppercase;
      margin-bottom: 14px;
      background: linear-gradient(135deg, var(--accent) 0%, #0090cc 100%);
      color: var(--primary-deep);
    }

    .info-card:not(.card-highlight) .card-badge {
      background: linear-gradient(135deg, var(--gold) 0%, #d4a500 100%);
      color: var(--primary-deep);
    }

    .highlight-box {
      background: linear-gradient(135deg, rgba(0, 200, 255, 0.08) 0%, rgba(0, 144, 204, 0.05) 100%);
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-card);
      padding: 24px 28px;
      margin-top: 28px;
    }

    .highlight-box p { color: var(--text-secondary); margin: 0; }

    figure.content-image {
      margin: 28px 0;
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-card);
    }

    figure.content-image img {
      width: 100%;
      height: auto;
      display: block;
      max-width: 100%;
    }

    figcaption {
      font-size: 0.82rem;
      color: var(--text-muted);
      padding: 10px 16px;
      background: var(--surface);
      text-align: center;
    }

    section {
      padding: 72px 0;
    }

    section:nth-child(even) {
      background: linear-gradient(180deg, var(--primary-deep) 0%, var(--primary) 50%, var(--primary-deep) 100%);
    }

    .section-label {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 12px;
    }

    .cards-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 24px;
      margin-top: 28px;
    }

    .cards-grid-3 {
      display: grid;
      grid-template-columns: 1fr;
      gap: 20px;
      margin: 28px 0;
    }

    .feature-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin: 16px 0 24px;
    }

    .feature-list li {
      display: flex;
      flex-direction: column;
      gap: 2px;
      padding: 10px 0;
      border-bottom: 1px solid var(--border-subtle);
    }

    .feature-list li:last-child { border-bottom: none; }
    .feature-list li strong { color: var(--text-primary); font-size: 0.95rem; }
    .feature-list li span { color: var(--text-secondary); font-size: 0.88rem; }

    dl.feature-list {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 8px 16px;
      margin: 16px 0 24px;
    }

    dl.feature-list dt {
      color: var(--text-muted);
      font-size: 0.83rem;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      padding-top: 2px;
    }

    dl.feature-list dd {
      color: var(--text-secondary);
      margin: 0;
      padding-bottom: 8px;
      border-bottom: 1px solid var(--border-subtle);
    }

    dl.feature-list dd:last-child { border-bottom: none; }
    dl.feature-list dd strong { color: var(--text-primary); }

    .text-block { margin-top: 24px; }

    .highlight-list {
      list-style: none;
      padding: 0;
      margin: 16px 0;
    }

    .highlight-list li {
      padding: 10px 0 10px 20px;
      border-bottom: 1px solid var(--border-subtle);
      color: var(--text-secondary);
      position: relative;
    }

    .highlight-list li::before {
      content: '';
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent);
    }

    .highlight-list li:last-child { border-bottom: none; }
    .highlight-list li strong { color: var(--text-primary); }

    .feature-block {
      background: var(--surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-card);
      padding: 28px;
      margin-bottom: 24px;
      box-shadow: var(--shadow-card);
    }

    .feature-block:last-child { margin-bottom: 0; }

    .feature-block p { color: var(--text-secondary); }

    .table-responsive {
      overflow-x: auto;
      border-radius: var(--radius-card);
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-card);
      margin: 28px 0;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.92rem;
    }

    .comparison-table thead {
      background: linear-gradient(135deg, var(--surface-raised) 0%, #162840 100%);
    }

    .comparison-table th {
      padding: 16px 20px;
      text-align: left;
      color: var(--accent);
      font-size: 0.78rem;
      text-transform: uppercase;
      letter-spacing: 1px;
      font-weight: 700;
      border-bottom: 2px solid var(--border-accent);
      white-space: nowrap;
    }

    .comparison-table td {
      padding: 14px 20px;
      color: var(--text-secondary);
      border-bottom: 1px solid var(--border-subtle);
    }

    .comparison-table td strong { color: var(--text-primary); }

    .comparison-table tbody tr {
      background: var(--surface);
      transition: background var(--transition);
    }

    .comparison-table tbody tr:nth-child(even) {
      background: rgba(30, 48, 80, 0.5);
    }

    .comparison-table tbody tr:hover {
      background: var(--surface-raised);
    }

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

    /* Accordion */
    .accordion-item {
      background: var(--surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-card);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color var(--transition);
    }

    .accordion-item:hover { border-color: var(--border-accent); }

    .accordion-header {
      margin: 0;
    }

    .accordion-header button {
      width: 100%;
      background: none;
      border: none;
      padding: 20px 24px;
      text-align: left;
      color: var(--text-primary);
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      transition: color var(--transition);
    }

    .accordion-header button::after {
      content: '+';
      font-size: 1.4rem;
      color: var(--accent);
      flex-shrink: 0;
      transition: transform var(--transition);
      line-height: 1;
    }

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

    .accordion-body {
      display: none;
      padding: 0 24px 20px;
    }

    .accordion-body p { color: var(--text-secondary); margin: 0; }
    .accordion-body.is-open { display: block; }

    /* === LAYOUT STYLES === */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(7, 13, 23, 0.95);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-subtle);
      box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    }

    .header-inner {
      display: flex;
      align-items: center;
      gap: 20px;
      padding-top: 14px;
      padding-bottom: 14px;
      flex-wrap: wrap;
    }

    .logo {
      flex-shrink: 0;
    }

    .logo a {
      text-decoration: none;
    }

    .logo-text {
      font-size: 1.2rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--accent) 0%, var(--gold) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: -0.3px;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 5px;
      width: 44px;
      height: 44px;
      background: var(--surface);
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      cursor: pointer;
      padding: 10px;
      margin-left: auto;
      transition: border-color var(--transition);
      flex-shrink: 0;
    }

    .hamburger:hover { border-color: var(--accent); }

    .hamburger span {
      display: block;
      width: 20px;
      height: 2px;
      background: var(--text-primary);
      border-radius: 2px;
      transition: transform var(--transition), opacity var(--transition);
    }

    .hamburger.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .hamburger.is-active span:nth-child(2) { opacity: 0; }
    .hamburger.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .main-nav {
      flex: 1;
    }

    .nav-list {
      display: flex;
      align-items: center;
      gap: 4px;
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .nav-list a {
      display: block;
      padding: 8px 16px;
      color: var(--text-secondary);
      font-weight: 500;
      font-size: 0.92rem;
      border-radius: 6px;
      transition: color var(--transition), background var(--transition);
      white-space: nowrap;
    }

    .nav-list a:hover {
      color: var(--text-primary);
      background: var(--surface);
    }

    .site-header .cta-button {
      flex-shrink: 0;
      padding: 10px 22px;
      font-size: 0.88rem;
      max-width: 200px;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .site-footer {
      background: var(--primary-deep);
      border-top: 1px solid var(--border-subtle);
      padding: 48px 0 32px;
    }

    .footer-inner {
      display: grid;
      grid-template-columns: 1fr;
      gap: 28px;
    }

    .footer-logo .logo-text {
      font-size: 1.1rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--accent) 0%, var(--gold) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .footer-tagline {
      color: var(--text-muted);
      font-size: 0.82rem;
      margin-top: 6px;
      margin-bottom: 0;
    }

    .footer-nav-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 20px;
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .footer-nav-list a {
      color: var(--text-muted);
      font-size: 0.88rem;
      transition: color var(--transition);
    }

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

    .footer-disclaimer p {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin: 0;
    }

    @media (min-width: 768px) {
      .footer-inner {
        grid-template-columns: 1fr auto auto;
        align-items: start;
      }
    }

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

      .header-inner {
        flex-wrap: wrap;
        position: relative;
      }

      .main-nav {
        display: none;
        width: 100%;
        order: 3;
      }

      .main-nav.is-open { display: block; }

      .nav-list {
        flex-direction: column;
        align-items: stretch;
        padding: 12px 0;
        border-top: 1px solid var(--border-subtle);
      }

      .nav-list a {
        padding: 12px 16px;
        font-size: 1rem;
      }

      .site-header .cta-button {
        width: 100%;
        max-width: 100%;
        order: 4;
        margin-top: 8px;
        margin-bottom: 8px;
      }
    }

@media (min-width: 768px) {
      .footer-inner {
        grid-template-columns: 1fr auto auto;
        align-items: start;
      }
    }

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

      .header-inner {
        flex-wrap: wrap;
        position: relative;
      }

      .main-nav {
        display: none;
        width: 100%;
        order: 3;
      }

      .main-nav.is-open { display: block; }

      .nav-list {
        flex-direction: column;
        align-items: stretch;
        padding: 12px 0;
        border-top: 1px solid var(--border-subtle);
      }

      .nav-list a {
        padding: 12px 16px;
        font-size: 1rem;
      }

      .site-header .cta-button {
        width: 100%;
        max-width: 100%;
        order: 4;
        margin-top: 8px;
        margin-bottom: 8px;
      }
    }