:root {
      --bg-light: #ffffff;
      --bg-dark: #020307;
      --card-bg: rgba(6, 9, 18, 0.78);
      --border-sheen: rgba(0, 240, 255, 0.25);
      --accent-cyan: #00f0ff;
      --accent-amber: #ffb703;
      --accent-magenta: #ff0055;
      --accent-green: #00ff88;
      --accent-gold: #e5c07b;
      --accent-teal: #00e5c9;
      --accent-orange: #ff7700;
      --text-main: #f3f6fc;
      --text-muted: #7e8c9f;
      --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      cursor: none;
    }

    body {
      background-color: var(--bg-light);
      color: var(--text-main);
      font-family: var(--font-sans);
      overflow-x: hidden;
      height: 1600vh;
    }

    /* Ambient Luxury CRT Scanline & Grain Overlay */
    .scanlines {
      position: fixed;
      inset: 0;
      background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.03), rgba(0, 255, 0, 0.01), rgba(0, 255, 0, 0.03));
      background-size: 100% 3px, 6px 100%;
      pointer-events: none;
      z-index: 999;
      opacity: 0.6;
    }

    /* Interactive Luxury HUD Cursor */
    #cursor-reticle {
      position: fixed;
      top: 0;
      left: 0;
      width: 36px;
      height: 36px;
      border: 1px solid var(--accent-cyan);
      border-radius: 50%;
      pointer-events: none;
      z-index: 10000;
      transform: translate(-50%, -50%);
      transition: width 0.2s, height 0.2s, border-color 0.2s, opacity 0.3s, background-color 0.2s;
      mix-blend-mode: difference;
      display: flex;
      align-items: center;
      justify-content: center;
      opacity: 0;
    }

    #cursor-reticle.active { opacity: 1; }
    #cursor-reticle.hover-link {
      width: 52px;
      height: 52px;
      border-color: var(--accent-teal);
      background-color: rgba(0, 240, 255, 0.12);
    }

    #cursor-dot {
      width: 4px;
      height: 4px;
      background: #fff;
      border-radius: 50%;
    }

    #cursor-coords {
      position: absolute;
      left: 45px;
      top: -5px;
      font-family: var(--font-mono);
      font-size: 9px;
      letter-spacing: 0.1em;
      color: var(--accent-cyan);
      white-space: nowrap;
    }

    /* ====================================================
       PERSISTENT TOP LUXURY MENU BAR
       ==================================================== */
    .persistent-navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 64px;
      padding: 0 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      z-index: 950;
      background: rgba(4, 7, 14, 0.7);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(0, 240, 255, 0.15);
      transition: background 0.4s, border-color 0.4s;
    }

    .persistent-navbar::before {
      content: "";
      position: absolute;
      bottom: -1px;
      left: 10%;
      right: 10%;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.5), transparent);
    }

    /* Nav Brand / Logo */
    .nav-left {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .nav-logo {
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
      color: #fff;
      font-family: var(--font-mono);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 0.15em;
    }

    .nav-logo-icon {
      color: var(--accent-cyan);
      font-size: 15px;
    }

    .nav-status-badge {
      font-family: var(--font-mono);
      font-size: 10px;
      color: var(--accent-green);
      letter-spacing: 0.12em;
      padding: 3px 8px;
      background: rgba(0, 255, 136, 0.08);
      border: 1px solid rgba(0, 255, 136, 0.25);
      border-radius: 4px;
    }

    /* Nav Center Links */
    .nav-center {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .nav-link {
      text-decoration: none;
      font-family: var(--font-mono);
      font-size: 11px;
      letter-spacing: 0.14em;
      color: var(--text-muted);
      padding: 6px 14px;
      border-radius: 20px;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      display: flex;
      align-items: center;
      gap: 6px;
      cursor: pointer !important;
    }

    .nav-link span {
      font-size: 9px;
      color: rgba(255, 255, 255, 0.35);
      transition: color 0.25s;
    }

    .nav-link:hover {
      color: #fff;
      border-color: rgba(0, 240, 255, 0.3);
      background: rgba(0, 240, 255, 0.06);
      box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
    }

    .nav-link:hover span {
      color: var(--accent-cyan);
    }

    /* Special Nav Highlights */
    .nav-link-teal {
      color: var(--accent-teal);
      border-color: rgba(0, 229, 201, 0.25);
      background: rgba(0, 229, 201, 0.05);
    }

    .nav-link-teal:hover {
      color: #fff;
      border-color: var(--accent-teal);
      background: rgba(0, 229, 201, 0.15);
      box-shadow: 0 0 15px rgba(0, 229, 201, 0.3);
    }

    .nav-link-orange {
      color: var(--accent-orange);
      border-color: rgba(255, 119, 0, 0.25);
      background: rgba(255, 119, 0, 0.05);
    }

    .nav-link-orange:hover {
      color: #fff;
      border-color: var(--accent-orange);
      background: rgba(255, 119, 0, 0.15);
      box-shadow: 0 0 15px rgba(255, 119, 0, 0.3);
    }

    /* Nav Right (Audio Control) */
    .nav-right {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .audio-toggle {
      padding: 6px 14px;
      border: 1px solid rgba(0, 240, 255, 0.3);
      border-radius: 20px;
      background: rgba(8, 12, 22, 0.6);
      backdrop-filter: blur(10px);
      font-family: var(--font-mono);
      font-size: 10px;
      letter-spacing: 0.14em;
      color: var(--accent-cyan);
      cursor: pointer !important;
      display: flex;
      align-items: center;
      gap: 8px;
      transition: all 0.3s;
    }

    .audio-toggle:hover {
      background: var(--accent-cyan);
      color: #000;
      box-shadow: 0 0 20px var(--accent-cyan);
    }

    .audio-indicator {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #444;
    }

    .audio-active .audio-indicator {
      background: var(--accent-green);
      box-shadow: 0 0 8px var(--accent-green);
    }

    /* Fixed Telemetry HUD Readout Bars */
    .telemetry-bar {
      position: fixed;
      top: 64px; /* Sits cleanly below persistent header */
      bottom: 0;
      width: 190px;
      padding: 36px 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      font-family: var(--font-mono);
      font-size: 11px;
      color: var(--accent-cyan);
      letter-spacing: 0.14em;
      pointer-events: none;
      z-index: 900;
      opacity: 0;
      transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .telemetry-bar.visible { opacity: 0.85; }
    .telemetry-left { left: 0; border-right: 1px solid rgba(0, 240, 255, 0.08); }
    .telemetry-right { right: 0; border-left: 1px solid rgba(0, 240, 255, 0.08); text-align: right; }

    /* 3D Perspective Viewport */
    .viewport {
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      perspective: 1100px;
      overflow: hidden;
    }

    #bg-canvas {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      z-index: 0;
      pointer-events: none;
    }

    .scene {
      position: absolute;
      width: 100%;
      height: 100%;
      transform-style: preserve-3d;
      will-change: transform;
      z-index: 1;
    }

    .layer {
      position: absolute;
      top: 50%;
      left: 50%;
      width: 90%;
      max-width: 1120px;
      backface-visibility: hidden;
      will-change: transform, opacity;
      transition: opacity 0.2s linear;
      transform-style: preserve-3d;
    }

    /* --- LAYER 1: Singularity Intro --- */
    .layer-1-container {
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      color: #06080e;
      position: relative;
    }

    .initial-black-dot {
      width: 36px;
      height: 36px;
      background-color: #000000;
      border-radius: 50%;
      will-change: transform;
      pointer-events: none;
      margin: 28px 0;
      box-shadow: 0 0 35px rgba(0, 0, 0, 0.35);
    }

    .scroll-hint {
      font-family: var(--font-mono);
      font-size: 11px;
      letter-spacing: 0.2em;
      color: #666;
      text-transform: uppercase;
      animation: pulse-glow 2s infinite;
    }

    @keyframes pulse-glow {
      0%, 100% { opacity: 0.4; transform: translateY(0); }
      50% { opacity: 1; transform: translateY(4px); }
    }

    /* --- LAYER 2: OPEN CENTERED GLITCH LAYOUT --- */
    .layer-2-center {
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      width: 100%;
      max-width: 960px;
      margin: 0 auto;
      position: relative;
    }

    .layer-2-center .service-meta {
      font-weight: 800;
      letter-spacing: 0.25em;
      margin-bottom: 18px;
    }

    .glitch-heading {
      position: relative;
      font-size: clamp(38px, 6.2vw, 84px);
      font-weight: 900;
      line-height: 1.05;
      letter-spacing: -0.03em;
      color: #ffffff;
      text-transform: uppercase;
      margin-bottom: 22px;
      display: inline-block;
      text-shadow: 0 0 30px rgba(255, 0, 85, 0.5);
    }

    .glitch-heading::before,
    .glitch-heading::after {
      content: attr(data-text);
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
      pointer-events: none;
    }

    .glitch-heading::before {
      left: 2px;
      text-shadow: -2px 0 var(--accent-magenta);
      animation: glitch-anim-1 2.2s infinite linear alternate-reverse;
      opacity: 0.9;
    }

    .glitch-heading::after {
      left: -2px;
      text-shadow: 2px 0 var(--accent-cyan);
      animation: glitch-anim-2 2.8s infinite linear alternate-reverse;
      opacity: 0.9;
    }

    @keyframes glitch-anim-1 {
      0% { clip-path: inset(20% 0 60% 0); transform: translate(-3px, -1px); }
      10% { clip-path: inset(80% 0 5% 0); transform: translate(3px, 1px); }
      20% { clip-path: inset(10% 0 70% 0); transform: translate(-2px, 2px); }
      30% { clip-path: inset(50% 0 20% 0); transform: translate(1px, -2px); }
      40% { clip-path: inset(15% 0 60% 0); transform: translate(-3px, 1px); }
      50% { clip-path: inset(70% 0 10% 0); transform: translate(3px, -1px); }
      60% { clip-path: inset(30% 0 45% 0); transform: translate(-1px, 2px); }
      70% { clip-path: inset(5% 0 85% 0); transform: translate(2px, -2px); }
      80% { clip-path: inset(65% 0 15% 0); transform: translate(-2px, 1px); }
      90% { clip-path: inset(40% 0 35% 0); transform: translate(1px, -1px); }
      100% { clip-path: inset(25% 0 55% 0); transform: translate(0, 0); }
    }

    @keyframes glitch-anim-2 {
      0% { clip-path: inset(15% 0 65% 0); transform: translate(3px, 1px); }
      10% { clip-path: inset(45% 0 30% 0); transform: translate(-3px, -1px); }
      20% { clip-path: inset(75% 0 10% 0); transform: translate(2px, -2px); }
      30% { clip-path: inset(10% 0 80% 0); transform: translate(-1px, 2px); }
      40% { clip-path: inset(60% 0 25% 0); transform: translate(3px, -1px); }
      50% { clip-path: inset(35% 0 40% 0); transform: translate(-2px, 1px); }
      60% { clip-path: inset(80% 0 5% 0); transform: translate(1px, -2px); }
      70% { clip-path: inset(20% 0 60% 0); transform: translate(-3px, 2px); }
      80% { clip-path: inset(50% 0 20% 0); transform: translate(2px, -1px); }
      90% { clip-path: inset(5% 0 75% 0); transform: translate(-1px, 1px); }
      100% { clip-path: inset(30% 0 50% 0); transform: translate(0, 0); }
    }

    .layer-2-center .service-desc {
      font-size: 18px;
      line-height: 1.7;
      max-width: 660px;
      margin: 0 auto;
      color: #b0c0d8;
    }

    /* --- Standard 3D Specular Interactive Cards --- */
    .card-box, .horizon-wrapper {
      background: var(--card-bg);
      border: 1px solid var(--border-sheen);
      border-radius: 18px;
      backdrop-filter: blur(24px);
      box-shadow: 0 30px 80px rgba(0, 0, 0, 0.85), inset 0 1px 1px rgba(255, 255, 255, 0.15);
      position: relative;
      overflow: hidden;
      transform-style: preserve-3d;
      transition: transform 0.15s ease-out, border-color 0.3s;
    }

    .card-box {
      padding: 44px;
      display: grid;
      grid-template-columns: 320px 1fr;
      gap: 48px;
      align-items: center;
    }

    .specular-sheen {
      position: absolute;
      inset: 0;
      pointer-events: none;
      background: radial-gradient(circle 350px at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 255, 255, 0.08), transparent 70%);
      opacity: 0.9;
    }

    .card-box::before {
      content: "";
      position: absolute;
      top: -1px; left: 50px; right: 50px; height: 1px;
      background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
    }

    .service-meta {
      font-family: var(--font-mono);
      font-size: 11px;
      color: var(--accent-cyan);
      letter-spacing: 0.2em;
      text-transform: uppercase;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .service-title {
      font-size: clamp(28px, 4.2vw, 46px);
      font-weight: 800;
      line-height: 1.1;
      letter-spacing: -0.025em;
      margin-bottom: 16px;
      color: #fff;
    }

    .service-desc {
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-muted);
      margin-bottom: 26px;
    }

    .feature-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
      margin-top: 18px;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .feature-item {
      font-family: var(--font-mono);
      font-size: 12px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .feature-item::before {
      content: "◆";
      color: var(--accent-cyan);
      font-size: 9px;
    }

    .horizon-wrapper {
      padding: 50px;
      display: flex;
      flex-direction: column;
      gap: 24px;
      text-align: center;
    }

    .horizon-bar-line {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 14px 0;
      display: flex;
      justify-content: space-between;
      font-family: var(--font-mono);
      font-size: 11px;
      color: var(--text-muted);
      letter-spacing: 0.14em;
    }

    /* --- LAYER 8: INTERACTIVE MENU DIRECTORY DECK --- */
    .menu-deck {
      display: flex;
      flex-direction: column;
      gap: 24px;
      width: 100%;
      position: relative;
    }

    .menu-deck-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(0, 240, 255, 0.15);
      font-family: var(--font-mono);
      font-size: 12px;
      letter-spacing: 0.2em;
    }

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

    .menu-grid-actions {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .menu-card {
      text-decoration: none;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 28px 24px;
      border-radius: 14px;
      position: relative;
      overflow: hidden;
      backdrop-filter: blur(20px);
      transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
      cursor: pointer !important;
    }

    .menu-card-normal {
      background: rgba(8, 12, 22, 0.85);
      border: 1px solid rgba(0, 240, 255, 0.2);
      box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6), inset 0 0 15px rgba(0, 240, 255, 0.03);
    }

    .menu-card-normal:hover {
      border-color: var(--accent-cyan);
      box-shadow: 0 16px 45px rgba(0, 240, 255, 0.25), inset 0 0 25px rgba(0, 240, 255, 0.1);
      transform: translateY(-5px);
    }

    .menu-card-normal:hover .menu-title {
      color: var(--accent-cyan);
      text-shadow: 0 0 16px var(--accent-cyan);
    }

    .menu-card-teal {
      background: linear-gradient(135deg, rgba(0, 36, 32, 0.85), rgba(6, 16, 22, 0.9));
      border: 1px solid rgba(0, 229, 201, 0.4);
      box-shadow: 0 14px 40px rgba(0, 229, 201, 0.15), inset 0 0 20px rgba(0, 229, 201, 0.08);
    }

    .menu-card-teal:hover {
      border-color: var(--accent-teal);
      background: linear-gradient(135deg, rgba(0, 52, 46, 0.95), rgba(8, 24, 30, 0.95));
      box-shadow: 0 20px 55px rgba(0, 229, 201, 0.4), inset 0 0 35px rgba(0, 229, 201, 0.2);
      transform: translateY(-5px) scale(1.01);
    }

    .menu-card-teal .menu-tag { color: var(--accent-teal); }
    .menu-card-teal .menu-title { color: #ffffff; }
    .menu-card-teal:hover .menu-title {
      color: var(--accent-teal);
      text-shadow: 0 0 20px var(--accent-teal);
    }

    .menu-card-orange {
      background: linear-gradient(135deg, rgba(46, 18, 0, 0.85), rgba(18, 10, 8, 0.9));
      border: 1px solid rgba(255, 119, 0, 0.45);
      box-shadow: 0 14px 40px rgba(255, 119, 0, 0.15), inset 0 0 20px rgba(255, 119, 0, 0.08);
    }

    .menu-card-orange:hover {
      border-color: var(--accent-orange);
      background: linear-gradient(135deg, rgba(68, 26, 0, 0.95), rgba(26, 12, 10, 0.95));
      box-shadow: 0 20px 55px rgba(255, 119, 0, 0.4), inset 0 0 35px rgba(255, 119, 0, 0.2);
      transform: translateY(-5px) scale(1.01);
    }

    .menu-card-orange .menu-tag { color: var(--accent-orange); }
    .menu-card-orange .menu-title { color: #ffffff; }
    .menu-card-orange:hover .menu-title {
      color: var(--accent-orange);
      text-shadow: 0 0 20px var(--accent-orange);
    }

    .menu-top-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      font-family: var(--font-mono);
      font-size: 10px;
      letter-spacing: 0.16em;
      color: var(--text-muted);
    }

    .menu-title {
      font-size: clamp(22px, 2.5vw, 30px);
      font-weight: 800;
      letter-spacing: -0.02em;
      color: #ffffff;
      margin-bottom: 8px;
      transition: color 0.25s, text-shadow 0.25s;
    }

    .menu-desc {
      font-size: 13px;
      line-height: 1.5;
      color: var(--text-muted);
      margin-bottom: 18px;
    }

    .menu-footer {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-family: var(--font-mono);
      font-size: 11px;
      letter-spacing: 0.12em;
      padding-top: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .menu-arrow {
      font-size: 16px;
      transition: transform 0.25s ease;
    }

    .menu-card:hover .menu-arrow { transform: translateX(5px); }

    /* ----------------------------------------------------
       ANIMATED TELEMETRY VECTOR HUDS
       ---------------------------------------------------- */
    .hud-container {
      width: 100%;
      aspect-ratio: 1;
      position: relative;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .hud-svg { width: 100%; height: 100%; overflow: visible; }

    @keyframes orbit-spin-cw { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
    @keyframes orbit-spin-ccw { 0% { transform: rotate(0deg); } 100% { transform: rotate(-360deg); } }
    @keyframes core-pulse { 0%, 100% { transform: scale(1); opacity: 0.85; } 50% { transform: scale(1.15); opacity: 1; } }
    @keyframes signal-ping { 0% { r: 12px; opacity: 1; } 100% { r: 130px; opacity: 0; } }

    .orbit-cw { animation: orbit-spin-cw 24s linear infinite; transform-origin: 150px 150px; }
    .orbit-cw-fast { animation: orbit-spin-cw 10s linear infinite; transform-origin: 150px 150px; }
    .orbit-ccw { animation: orbit-spin-ccw 32s linear infinite; transform-origin: 150px 150px; }
    .pulse-node { animation: core-pulse 2.5s ease-in-out infinite; transform-origin: 150px 150px; }
    .ping-wave { animation: signal-ping 3s cubic-bezier(0, 0.2, 0.8, 1) infinite; transform-origin: 150px 150px; }

    .page-footer {
      position: relative;
      z-index: 2;
      margin: 0 5vw 40px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 40px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-family: var(--font-mono);
      font-size: 11px;
      color: var(--text-muted);
      letter-spacing: 0.12em;
    }

    @media (max-width: 960px) {
      .persistent-navbar { padding: 0 16px; }
      .nav-center { display: none; } /* Compact mobile navbar */
      .nav-status-badge { display: none; }
      .card-box { grid-template-columns: 1fr; gap: 24px; padding: 28px; }
      .hud-container { max-width: 220px; margin: 0 auto; }
      .telemetry-bar { display: none; }
      .feature-list { grid-template-columns: 1fr; }
      .menu-grid-standard { grid-template-columns: 1fr; }
      .menu-grid-actions { grid-template-columns: 1fr; }
      #cursor-reticle { display: none; }
      * { cursor: auto; }
    }

    @media (max-width: 640px) {
      .page-footer { flex-direction: column; gap: 16px; text-align: center; }
    }