/* === BASE STYLES === */:root {
      --primary: #0a0a1a;
      --secondary: #0d1535;
      --surface: #111827;
      --surface-raised: #1a2540;
      --accent: #00e5ff;
      --accent-dim: rgba(0, 229, 255, 0.15);
      --accent-glow: rgba(0, 229, 255, 0.4);
      --gold: #ffd700;
      --gold-dim: rgba(255, 215, 0, 0.15);
      --text-primary: #f0f4ff;
      --text-secondary: #9bb0cc;
      --text-muted: #5a7090;
      --border-subtle: rgba(0, 229, 255, 0.12);
      --border-accent: rgba(0, 229, 255, 0.35);
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
      --shadow-glow: 0 0 24px rgba(0, 229, 255, 0.25);
      --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;
      background-color: var(--primary);
      color: var(--text-primary);
      font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
      font-size: 16px;
      line-height: 1.65;
    }

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

    h2 {
      font-size: clamp(1.6rem, 3vw, 2.2rem);
      margin-bottom: 1.5rem;
      position: relative;
      padding-bottom: 0.75rem;
    }

    h2::after {
      content: '';
      display: block;
      width: 48px;
      height: 3px;
      background: linear-gradient(90deg, var(--accent), transparent);
      margin-top: 0.75rem;
      border-radius: 2px;
    }

    h3 {
      font-size: clamp(1rem, 2vw, 1.2rem);
      margin-bottom: 0.6rem;
    }

    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: #fff; }

    ul, ol { padding-left: 1.25rem; color: var(--text-secondary); }
    li { margin-bottom: 0.4rem; }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1rem;
    }

    /* Buttons */
    .action-button,
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.65rem 1.5rem;
      background: linear-gradient(135deg, var(--accent) 0%, #0099bb 100%);
      color: #000 !important;
      font-weight: 700;
      font-size: 0.9rem;
      letter-spacing: 0.5px;
      border: none;
      border-radius: var(--radius-btn);
      cursor: pointer;
      transition: transform var(--transition), box-shadow var(--transition);
      text-decoration: none;
      white-space: nowrap;
    }

    .action-button:hover,
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px var(--accent-glow);
      color: #000 !important;
    }

    .action-button-gold {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.9rem 2.5rem;
      background: linear-gradient(135deg, var(--gold) 0%, #e6a800 100%);
      color: #000 !important;
      font-weight: 800;
      font-size: 1.05rem;
      letter-spacing: 0.5px;
      border: none;
      border-radius: var(--radius-btn);
      cursor: pointer;
      transition: transform var(--transition), box-shadow var(--transition);
      text-decoration: none;
    }

    .action-button-gold:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 32px rgba(255, 215, 0, 0.45);
      color: #000 !important;
    }

    /* Cards */
    .info-card {
      background: var(--surface-raised);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-card);
      padding: 1.5rem;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
      box-shadow: var(--shadow-card);
    }

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

    .info-card h3 { color: var(--accent); }

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

    .checklist li {
      padding: 0.5rem 0 0.5rem 1.8rem;
      position: relative;
      color: var(--text-secondary);
      border-bottom: 1px solid var(--border-subtle);
    }

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

    .checklist li::before {
      content: '';
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 18px;
      height: 18px;
      background: var(--accent-dim);
      border: 1.5px solid var(--accent);
      border-radius: 50%;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2 6l3 3 5-5' stroke='%2300e5ff' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: center;
    }

    /* Numbered list */
    .numbered-list {
      list-style: none;
      padding: 0;
      counter-reset: num-list;
    }

    .numbered-list li {
      counter-increment: num-list;
      padding: 0.6rem 0 0.6rem 2.5rem;
      position: relative;
      color: var(--text-secondary);
      border-bottom: 1px solid var(--border-subtle);
    }

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

    .numbered-list li::before {
      content: counter(num-list);
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 26px;
      height: 26px;
      background: var(--accent-dim);
      border: 1.5px solid var(--accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.7rem;
      font-weight: 700;
      color: var(--accent);
      line-height: 1;
      text-align: center;
      padding-top: 1px;
    }

    /* Feature list */
    .feature-list {
      list-style: none;
      padding: 0;
    }

    .feature-list li {
      padding: 0.55rem 0 0.55rem 1.6rem;
      position: relative;
      color: var(--text-secondary);
    }

    .feature-list li::before {
      content: '';
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 6px var(--accent);
    }

    /* Highlight box */
    .highlight-box {
      background: linear-gradient(135deg, rgba(0, 229, 255, 0.07) 0%, rgba(0, 229, 255, 0.03) 100%);
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-card);
      padding: 1.5rem;
      margin: 1.25rem 0;
    }

    .highlight-box h3 { color: var(--accent); }

    /* Definition list */
    .definition-list {
      background: var(--surface-raised);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-subtle);
      overflow: hidden;
    }

    .definition-list dt {
      background: rgba(0, 229, 255, 0.06);
      padding: 0.75rem 1.25rem;
      color: var(--accent);
      font-size: 0.9rem;
      border-bottom: 1px solid var(--border-subtle);
    }

    .definition-list dd {
      padding: 0.65rem 1.25rem 0.75rem;
      color: var(--text-secondary);
      margin: 0;
      border-bottom: 1px solid var(--border-subtle);
      font-size: 0.95rem;
    }

    .definition-list dd:last-child { border-bottom: none; }

    /* Cards grid */
    .cards-grid {
      display: grid;
      gap: 1.25rem;
      margin: 1.5rem 0;
    }

    .cards-grid-2 { grid-template-columns: 1fr; }
    .cards-grid-3 { grid-template-columns: 1fr; }

    /* Content images */
    .content-image {
      margin: 1.5rem 0;
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
    }

    .content-image img {
      display: block;
      width: 100%;
      height: auto;
      max-height: 420px;
      object-fit: cover;
    }

    .content-image.portrait {
      max-width: 420px;
      margin-right: auto;
    }

    .content-image.portrait img {
      object-fit: contain;
    }

    /* Section spacing */
    main > section {
      padding: 4rem 0;
      position: relative;
    }

    main > section:nth-child(even) {
      background: var(--secondary);
    }

    /* Table responsive */
    .table-responsive {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    /* === LAYOUT STYLES === */
    #site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 10, 26, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      padding-top: 0.85rem;
      padding-bottom: 0.85rem;
    }

    .logo a {
      display: flex;
      align-items: center;
      text-decoration: none;
    }

    .logo-text {
      font-size: 1.5rem;
      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: -0.5px;
    }

    .hamburger {
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      width: 44px;
      height: 44px;
      background: var(--surface-raised);
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      cursor: pointer;
      gap: 5px;
      padding: 10px;
      flex-shrink: 0;
    }

    .hamburger-line {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text-primary);
      border-radius: 2px;
      transition: transform var(--transition), opacity var(--transition);
    }

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

    .main-nav {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      background: rgba(10, 10, 26, 0.98);
      border-bottom: 1px solid var(--border-subtle);
      padding: 1rem;
      backdrop-filter: blur(12px);
    }

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

    header nav .nav-menu {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
    }

    header nav .nav-menu li a {
      display: block;
      padding: 0.75rem 1rem;
      color: var(--text-secondary);
      font-weight: 500;
      font-size: 0.95rem;
      border-radius: 8px;
      transition: background var(--transition), color var(--transition);
      text-decoration: none;
    }

    header nav .nav-menu li a:hover {
      background: var(--surface-raised);
      color: var(--accent);
    }

    .header-cta {
      display: none;
    }

    .site-footer {
      background: #06070f;
      border-top: 1px solid var(--border-subtle);
      padding: 2.5rem 0;
    }

    .footer-inner {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
      align-items: center;
      text-align: center;
    }

    .footer-logo .logo-text { font-size: 1.3rem; }

    .footer-nav ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 0.5rem 1.5rem;
    }

    .footer-nav ul li a {
      color: var(--text-muted);
      font-size: 0.875rem;
      transition: color var(--transition);
      text-decoration: none;
    }

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

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

    @media (min-width: 768px) {
      .hamburger { display: none; }

      .main-nav {
        display: flex !important;
        position: static;
        background: transparent;
        border: none;
        padding: 0;
        backdrop-filter: none;
        flex: 1;
        justify-content: center;
      }

      header nav .nav-menu {
        flex-direction: row;
        gap: 0.25rem;
      }

      header nav .nav-menu li a {
        padding: 0.5rem 0.85rem;
        font-size: 0.9rem;
      }

      .header-cta { display: flex; }

      .footer-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
        flex-wrap: wrap;
      }
    }

    @media (max-width: 767px) {
      .header-inner {
        flex-wrap: wrap;
      }

      .btn-primary.cta-button {
        display: none;
      }
    }

@media (min-width: 768px) {
      .hamburger { display: none; }

      .main-nav {
        display: flex !important;
        position: static;
        background: transparent;
        border: none;
        padding: 0;
        backdrop-filter: none;
        flex: 1;
        justify-content: center;
      }

      header nav .nav-menu {
        flex-direction: row;
        gap: 0.25rem;
      }

      header nav .nav-menu li a {
        padding: 0.5rem 0.85rem;
        font-size: 0.9rem;
      }

      .header-cta { display: flex; }

      .footer-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
        flex-wrap: wrap;
      }
    }

@media (max-width: 767px) {
      .header-inner {
        flex-wrap: wrap;
      }

      .btn-primary.cta-button {
        display: none;
      }
    }