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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover" />
+  <meta name="theme-color" content="#0a0e1a" />
+  <title>HIDDEN SPECTRE — AR Ghost Hunt</title>
+  <link rel="preconnect" href="https://fonts.googleapis.com" />
+  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
+  <link href="https://fonts.googleapis.com/css2?family=Bungee&family=Space+Mono:wght@400;700&display=swap" rel="stylesheet" />
+  <link rel="stylesheet" href="css/style.css" />
+</head>
+<body>
+  <!-- ====================== TITLE SCREEN ====================== -->
+  <section id="title-screen" class="screen active">
+    <div class="vignette"></div>
+    <div class="title-content">
+      <div class="logo">
+        <span class="logo-hidden">HIDDEN</span>
+        <span class="logo-spectre">SPECTRE</span>
+      </div>
+      <p class="tagline">An AR ghost hunt. Point your phone at the world and trap what's lurking.</p>
+
+      <div class="hud-line">// SYSTEM STATUS</div>
+      <div id="capability" class="capability checking">Checking device capability…</div>
+
+      <button id="start-btn" class="btn-primary" disabled>
+        <span class="btn-glow"></span>
+        BEGIN THE HUNT
+      </button>
+
+      <button id="how-btn" class="btn-ghost">How it works</button>
+    </div>
+    <div class="scanlines"></div>
+  </section>
+
+  <!-- ====================== HOW-TO OVERLAY ====================== -->
+  <div id="howto" class="modal">
+    <div class="modal-card">
+      <h2>FIELD MANUAL</h2>
+      <ol class="howto-list">
+        <li><strong>Scan the area.</strong> Slowly pan your phone across the room so the hunt grid locks onto the world around you.</li>
+        <li><strong>Spot the spectres.</strong> Ghosts drift in 3-D space. Turn your body to find them — they hide behind you.</li>
+        <li><strong>Charge the trap.</strong> Aim the reticle at a ghost and <em>hold</em> the trap button. Keep it centered while the beam locks on.</li>
+        <li><strong>Banish it.</strong> Fill the capture meter before the ghost escapes. Each catch feeds your tally.</li>
+      </ol>
+      <button id="howto-close" class="btn-primary">GOT IT</button>
+    </div>
+  </div>
+
+  <!-- ====================== AR / HUNT SCREEN ====================== -->
+  <section id="hunt-screen" class="screen">
+    <!-- Fallback camera feed (used when full WebXR-AR unavailable) -->
+    <video id="camera-feed" playsinline autoplay muted></video>
+    <canvas id="gl-canvas"></canvas>
+
+    <!-- Scan prompt -->
+    <div id="scan-prompt" class="scan-prompt">
+      <div class="radar"><div class="radar-sweep"></div></div>
+      <p>PAN SLOWLY TO MAP THE AREA</p>
+    </div>
+
+    <!-- HUD -->
+    <div id="hud" class="hud hidden">
+      <div class="hud-top">
+        <div class="hud-stat">
+          <span class="hud-label">TRAPPED</span>
+          <span id="score" class="hud-value">0</span>
+        </div>
+        <div class="hud-stat">
+          <span class="hud-label">NEARBY</span>
+          <span id="nearby" class="hud-value">0</span>
+        </div>
+        <button id="exit-btn" class="hud-exit">✕</button>
+      </div>
+
+      <!-- Reticle -->
+      <div id="reticle" class="reticle">
+        <div class="reticle-ring"></div>
+        <div class="reticle-dot"></div>
+        <svg class="capture-ring" viewBox="0 0 120 120">
+          <circle class="capture-track" cx="60" cy="60" r="54" />
+          <circle id="capture-progress" class="capture-fill" cx="60" cy="60" r="54" />
+        </svg>
+        <div id="lock-label" class="lock-label"></div>
+      </div>
+
+      <!-- Direction hint -->
+      <div id="dir-hint" class="dir-hint hidden">
+        <span class="dir-arrow">◄</span> SPECTRE THIS WAY
+      </div>
+
+      <!-- Trap button -->
+      <div class="hud-bottom">
+        <button id="trap-btn" class="trap-btn">
+          <span class="trap-icon"></span>
+          <span class="trap-text">HOLD TO TRAP</span>
+        </button>
+      </div>
+    </div>
+
+    <!-- Capture flash -->
+    <div id="capture-flash" class="capture-flash"></div>
+    <div id="toast" class="toast"></div>
+  </section>
+
+  <script type="importmap">
+  {
+    "imports": {
+      "three": "https://cdnjs.cloudflare.com/ajax/libs/three.js/0.160.0/three.module.min.js"
+    }
+  }
+  </script>
+  <script type="module" src="js/main.js"></script>
+</body>
+</html>
