图书馆首帧叙事：从阅读女孩拉远至发光门廊

Start from a still close-up of a young girl reading alone in a dim library. Over 0-3s, the camera slowly pulls back to reveal floating dust, shelves stretching into darkness, and warm window light. Over 3-6s, papers begin to move gently as if a hidden force is present. Over 6-8s, a glowing doorway appears in the background and the girl looks up in surprise. Keep the girl's appearance consistent throughout the shot.