:root {
      --bg: #0b1726;
      --card-bg: rgba(18, 34, 55, 0.75);
      --card-border: #1e3552;
      --gold: #c6923b;
      --gold-light: #e5b35a;
      --gold-glow: rgba(198, 146, 59, 0.25);
      --text: #f8fafc;
      --text-muted: #94a3b8;
      --text-sub: #cbd5e1;
      --accent-blue: #38bdf8;
      --accent-green: #34d399;
      --accent-red: #f87171;
    }

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

    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, Tahoma, Arial, sans-serif;
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.6;
      overflow: hidden;
      height: 100vh;
      width: 100vw;
      user-select: none;
      -webkit-font-smoothing: antialiased;
    }

    /* Background decorative grid */
    .bg-grid {
      position: fixed;
      inset: 0;
      background-image: 
        linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
      background-size: 40px 40px;
      pointer-events: none;
      z-index: 0;
    }

    .bg-radial {
      position: fixed;
      inset: 0;
      background: radial-gradient(circle at 50% 30%, rgba(198, 146, 59, 0.08) 0%, transparent 70%);
      pointer-events: none;
      z-index: 0;
    }

    /* Presentation Container */
    .deck-container {
      position: relative;
      width: 100%;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      z-index: 1;
    }

    /* Header Bar */
    header.deck-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 36px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      background: rgba(11, 23, 38, 0.85);
      backdrop-filter: blur(10px);
    }

    .brand-group {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .brand-logo {
      font-size: 1.5rem;
      font-weight: 900;
      color: var(--gold);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .brand-tagline {
      font-size: 0.85rem;
      color: var(--text-muted);
      border-right: 2px solid rgba(255, 255, 255, 0.15);
      padding-right: 12px;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn-header {
      background: rgba(255, 255, 255, 0.06);
      color: var(--text-sub);
      border: 1px solid var(--card-border);
      padding: 7px 14px;
      border-radius: 8px;
      font-size: 0.85rem;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: all 0.2s ease;
      text-decoration: none;
    }

    .btn-header:hover {
      background: rgba(255, 255, 255, 0.12);
      color: #fff;
      border-color: var(--gold);
    }

    .btn-header.primary {
      background: var(--gold);
      color: #0b1726;
      font-weight: 700;
      border-color: var(--gold);
    }

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

    /* Slides Viewport */
    .slides-wrapper {
      position: relative;
      flex: 1;
      width: 100%;
      height: 100%;
      overflow: hidden;
    }

    .slide {
      position: absolute;
      inset: 0;
      padding: 30px 60px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      opacity: 0;
      visibility: hidden;
      transform: translateX(40px);
      transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1), transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.35s;
    }

    .slide.active {
      opacity: 1;
      visibility: visible;
      transform: translateX(0);
    }

    .slide.prev {
      transform: translateX(-40px);
    }

    /* Slide Typography & Elements */
    .slide-badge {
      display: inline-block;
      align-self: flex-start;
      background: rgba(198, 146, 59, 0.15);
      border: 1px solid var(--gold);
      color: var(--gold-light);
      padding: 4px 14px;
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 700;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .slide-title {
      font-size: 2.2rem;
      font-weight: 900;
      color: #fff;
      line-height: 1.25;
      margin-bottom: 12px;
    }

    .slide-subtitle {
      font-size: 1.15rem;
      color: var(--text-sub);
      max-width: 900px;
      margin-bottom: 28px;
    }

    /* Layout Grids */
    .grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    /* Card Component */
    .card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: 14px;
      padding: 22px;
      position: relative;
      overflow: hidden;
      backdrop-filter: blur(8px);
      transition: transform 0.2s ease, border-color 0.2s ease;
    }

    .card:hover {
      transform: translateY(-2px);
      border-color: rgba(198, 146, 59, 0.5);
    }

    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(198, 146, 59, 0.12);
      border: 1px solid rgba(198, 146, 59, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      margin-bottom: 14px;
      color: var(--gold);
    }

    .card-title {
      font-size: 1.15rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 8px;
    }

    .card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    .card-meta {
      margin-top: 12px;
      padding-top: 10px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 0.8rem;
      color: var(--gold-light);
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* Cover Slide Specifics */
    .slide-cover {
      text-align: center;
      align-items: center;
      justify-content: center;
    }

    .cover-brand-box {
      background: radial-gradient(circle, rgba(198, 146, 59, 0.15) 0%, transparent 70%);
      padding: 30px;
      border-radius: 24px;
      margin-bottom: 15px;
    }

    .cover-brand {
      font-size: 4.8rem;
      font-weight: 900;
      color: var(--gold-light);
      letter-spacing: -1px;
      margin-bottom: 6px;
      text-shadow: 0 4px 24px rgba(198, 146, 59, 0.3);
    }

    .cover-tagline {
      font-size: 1.45rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 20px;
    }

    .cover-mission {
      font-size: 1.15rem;
      color: var(--text-sub);
      max-width: 760px;
      margin: 0 auto 30px auto;
      line-height: 1.7;
    }

    .cover-meta-pills {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    .pill {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 8px 18px;
      border-radius: 999px;
      font-size: 0.9rem;
      color: var(--text-sub);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .pill strong {
      color: var(--gold-light);
    }

    /* Highlight Big Numbers */
    .stat-box {
      background: linear-gradient(145deg, rgba(18, 34, 55, 0.85), rgba(11, 23, 38, 0.95));
      border: 1px solid var(--card-border);
      border-radius: 14px;
      padding: 24px;
      text-align: center;
    }

    .stat-number {
      font-size: 2.6rem;
      font-weight: 900;
      color: var(--gold-light);
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .stat-label {
      font-size: 0.95rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 4px;
    }

    .stat-desc {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* List items in slides */
    .feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .feature-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid rgba(255, 255, 255, 0.06);
      padding: 14px 18px;
      border-radius: 10px;
    }

    .feature-num {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--gold);
      color: #0b1726;
      font-weight: 900;
      font-size: 0.85rem;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      margin-top: 2px;
    }

    .feature-content h4 {
      font-size: 1.05rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 4px;
    }

    .feature-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* Comparison Table */
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 10px;
    }

    .compare-table th, .compare-table td {
      padding: 14px 18px;
      text-align: right;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 0.92rem;
    }

    .compare-table th {
      color: var(--gold);
      font-weight: 800;
      border-bottom: 2px solid var(--card-border);
      background: rgba(255, 255, 255, 0.02);
    }

    .compare-table td.brand-col {
      color: #fff;
      font-weight: 700;
      background: rgba(198, 146, 59, 0.04);
    }

    /* Footer Controls */
    footer.deck-footer {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 14px 36px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      background: rgba(11, 23, 38, 0.85);
      backdrop-filter: blur(10px);
    }

    .slide-counter {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    .deck-controls {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .ctrl-btn {
      background: rgba(255, 255, 255, 0.06);
      color: var(--text);
      border: 1px solid var(--card-border);
      width: 40px;
      height: 40px;
      border-radius: 8px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      transition: all 0.2s ease;
    }

    .ctrl-btn:hover:not(:disabled) {
      background: rgba(255, 255, 255, 0.14);
      border-color: var(--gold);
      color: var(--gold);
    }

    .ctrl-btn:disabled {
      opacity: 0.3;
      cursor: not-allowed;
    }

    /* Progress bar */
    .progress-bar-wrap {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: rgba(255, 255, 255, 0.05);
    }

    .progress-bar-fill {
      height: 100%;
      background: var(--gold);
      transition: width 0.3s ease;
    }

    /* Print styling for PDF Export */
    @media print {
      body {
        overflow: visible !important;
        height: auto !important;
        background: #0b1726 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
      }
      header.deck-header, footer.deck-footer, .progress-bar-wrap {
        display: none !important;
      }
      .deck-container {
        display: block !important;
        height: auto !important;
      }
      .slides-wrapper {
        display: block !important;
        height: auto !important;
        overflow: visible !important;
      }
      .slide {
        position: relative !important;
        inset: auto !important;
        height: 100vh !important;
        max-height: 100vh !important;
        page-break-after: always !important;
        page-break-inside: avoid !important;
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
        display: flex !important;
        padding: 40px 60px !important;
      }
    }

    /* Mobile Responsive */
    @media (max-width: 900px) {
      .slide {
        padding: 20px;
        overflow-y: auto;
      }
      .slide-title {
        font-size: 1.6rem;
      }
      .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
        gap: 12px;
      }
      header.deck-header, footer.deck-footer {
        padding: 10px 18px;
      }
      .brand-tagline {
        display: none;
      }
    }