/* 
           CSS 样式定义
        */
        .video-module-container, 
        .video-module-container * {
            box-sizing: border-box;
        }

        .video-module-container {
            width: 1680px; 
            height: 840px; 
            background-color: #000000;
            margin: 0 auto;
            padding: 0;
            font-family: 'Microsoft YaHei', sans-serif;
            cursor: pointer;
            position: relative;
            display: block;
            clear: both;
            overflow: hidden;
        }

        .inner-stage {
            width: 100%;
            height: 100%;
            position: relative;
            overflow: hidden; 
            margin: 0;
            padding: 0;
        }

        @media (max-width: 768px) {
            .video-module-container {
                width: 100% !important;
                height: auto !important; 
                padding: 20px 0; 
            }

            .inner-stage {
                width: 100%;
                aspect-ratio: 16 / 9; 
                min-height: 300px; 
            }
        }

        /* 封面层：点击它才会触发视频加载 */
        #cover-layer {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%;
            z-index: 10; margin: 0; padding: 0;
            cursor: pointer; /* 提示可点击 */
        }

        #particle-canvas {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%;
            z-index: 1; display: block;
            pointer-events: none; /* 让点击穿透画布 */
        }

        .content-wrapper {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%;
            z-index: 2; display: flex; flex-direction: column;
            justify-content: center; align-items: center;
            /* 关键：允许点击内容触发父级 cover-layer 的事件 */
            pointer-events: none; 
            padding: 0 20px; margin: 0;
        }

        .logo-container {
            width: 600px; 
            height: 175px;
            aspect-ratio: 600 / 175; 
            margin-bottom: 15px; margin-top: 0; margin-left: 0; margin-right: 0;
            position: relative; transform: translateY(-20px);
        }

        .logo-img {
            width: 100%; height: 100%; object-fit: contain; opacity: 0; display: block;
        }

        .logo-animate {
            -webkit-mask-image: linear-gradient(to right, black 50%, transparent 100%);
            -webkit-mask-size: 200% 100%; -webkit-mask-position: 100% 0;
            mask-image: linear-gradient(to right, black 50%, transparent 100%);
            mask-size: 200% 100%; mask-position: 100% 0;
            animation: logoReveal 2.5s ease-out forwards;
            opacity: 1 !important;
        }

        @keyframes logoReveal {
            0% { -webkit-mask-position: 100% 0; mask-position: 100% 0; }
            100% { -webkit-mask-position: 0% 0; mask-position: 0% 0; }
        }

        .play-button {
            width: 93px; height: 93px;
            border: 3px solid #FFFFFF; border-radius: 50%;
            display: flex; justify-content: center; align-items: center;
            opacity: 0; transition: opacity 0.5s ease;
            position: relative; flex-shrink: 0;
            background: rgba(0,0,0,0.3);
            box-shadow: 0 0 20px rgba(255,255,255,0.1);
            margin: 0; padding: 0;
            /* 让点击穿透到 cover-layer */
            pointer-events: auto; 
            cursor: pointer;
        }

        .play-triangle {
            width: 0; height: 0;
            border-top: 18px solid transparent; border-bottom: 18px solid transparent;
            border-left: 28px solid #FFFFFF; margin-left: 8px;
        }

        .text-group {
            text-align: center; color: #FFFFFF;
            margin-top: 10px; width: 90%; margin-bottom: 0;
        }

        .text-line-1 {
            font-family: 'Noto Sans SC', sans-serif;
            font-weight: 500; font-size: 19px; line-height: 1.5;
            margin-bottom: 8px; letter-spacing: 0.5px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.5);
            margin-top: 0;
        }

        .text-line-2 {
            font-family: 'DengXian', 'Calibri', sans-serif;
            font-weight: 400; font-size: 13px; line-height: 1.6;
            opacity: 0.8; white-space: pre-line;
            text-shadow: 0 2px 4px rgba(0,0,0,0.5);
            margin: 0;
        }

        @media (max-width: 768px) {
            .logo-container { width: 70%; max-width: none; transform: translateY(0); margin-bottom: 10px; height: auto; flex-shrink: 0; }
            .play-button { width: 60px; height: 60px; }
            .play-triangle { border-top-width: 12px; border-bottom-width: 12px; border-left-width: 18px; margin-left: 4px; }
            .text-group { margin-top: 15px; }
            .text-line-1 { font-size: 16px; margin-bottom: 5px; }
            .text-line-2 { display: block !important; font-size: 12px; white-space: normal; }
        }

        #video-layer {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%;
            z-index: 20; 
            display: none; 
            background: black;
            margin: 0; padding: 0;
        }

        /* 
           修复核心：
           这里去掉了 pointer-events: none;
           现在你可以和视频交互了（暂停、全屏、拖动进度条）。
        */
        #video-iframe { 
            width: 100%; 
            height: 100%; 
            border: none; 
            display: block; 
        }