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

        body {
           font-family: "Inter,-apple-system,BlinkMacSystemFont,sans-serif";
            min-height: 100vh;
            background-size: cover;
            color: #fff;
            position: relative;
        }
        .main-content {
            width: 100%;
            background: #0a0a1a url('1.jpg') no-repeat center center;
            background-size: cover;
            position: relative;
            min-height: 100vh;
        }
        .main-content::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 1;
        }

        .header-logo {
            position: absolute;
            top: 20px;
            left: 20px;
            display: flex;
            align-items: center;
            gap: 0.8rem;
            z-index: 10;
        }

        .static-svg {
            width: 24px;
            height: 24px;
            color: #4a9eff;
        }

        .logo-text {
            font-size: 1.2rem;
            color: #fff;
            font-weight: 800;
        }

        .app {
            width: 100%;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            z-index: 5;
        }

        .hero {
            text-align: center;
            padding: 2rem;
        }

        .hero h1 {
            font-size: 120.0387px;
            letter-spacing: -4.75193px;
            font-weight: 700;
            margin-bottom: 1.5rem;
            letter-spacing: 0.05em;
            
        }

        .hero p {
            font-size: 1.1rem;
            color: #a0b8d8;
            margin-bottom: 2.5rem;
        }

        .hero p strong {
            color: #4a9eff;
        }

        .btn-group {
            display: flex;
            gap: 0.5rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            padding: 0.7rem 1.5rem;
            border-radius: 999px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            border: none;
            font-family: inherit;
        }

        .btn-primary {
            background: #fff;
            color: #000;
            font-size: 14px;
            font-weight: 800;
            font-family: "Inter,-apple-system,BlinkMacSystemFont,sans-serif";
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1px solid #fff;
             font-size: 14px;
            font-weight: 800;
            font-family: "Inter,-apple-system,BlinkMacSystemFont,sans-serif";
        }

        /* 独立的视频播放区域（放在hero下方、轮播上方） */
        .video-section {
            width: 100%;
            background: linear-gradient(to bottom, #04040D 0%, #04040D 100%);
            padding: 60px 20px;
            display: flex;
            flex-direction: column; /* 改为纵向排列，先标题后视频 */
            align-items: center;
            justify-content: center;
            position: relative;
            z-index: 5;
            text-align: center;
        }

        /* 视频区域标题样式（复刻截图） */
        .video-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
            max-width: 800px;
            line-height: 1.2;
        }

        .video-subtitle {
            font-size: 1.1rem;
            color: #a0b8d8;
            margin-bottom: 2.5rem;
            max-width: 800px;
            line-height: 1.5;
        }

        .video-container {
        position: relative;
        width: 100%;
        max-width: 1100px;
        border-radius: 16px;
        overflow: hidden;
        
        /* 关键：多层渐变背景 */
        background: 
            /* 顶部紫色光晕 */
            radial-gradient(
            ellipse 80% 50% at 50% 0%,
            rgba(139, 92, 246, 0.4) 0%,
            transparent 50%
            ),
            /* 中心蓝色光晕 */
            radial-gradient(
            ellipse 60% 40% at 50% 30%,
            rgba(59, 130, 246, 0.25) 0%,
            transparent 60%
            ),
            /* 底部深色 */
            linear-gradient(
            to bottom,
            #0f172a 0%,
            #020617 100%
            );
        
        /* 保留你的阴影 */
        box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
        border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .video-wrapper {
            position: relative;
            width: 800px;
            padding-top: 56.25%; /* 16:9 标准视频比例 */
            margin: 0px auto;
        }

         @media (max-width: 768px) {
                 .video-wrapper {
                    position: relative;
                    padding-top: 56.25%; /* 16:9 标准视频比例 */
                    margin: 0px auto;
                    width: auto;
                    height: 325px;
                }
         }

        .video-player {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            max-width: 100%;
            max-height: 100%;
            width: 548px;
            height: 456px;
            object-fit: cover;
            border: 5px solid #614F9D;
            border-radius: 3%;
		 
        }

        /* 播放/暂停按钮（悬浮显示，仅保留核心控制） */
    .video-play-btn {
        position: absolute;
        /* 改为右下角 */
        right: 20px;      /* 距离右边 20px */
        bottom: 20px;     /* 距离底部 20px */
        
        /* 去掉之前的居中 */
        /* top: 50%; */
        /* left: 50%; */
        /* transform: translate(-50%, -50%); */
        
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.8);
        border: none;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
        z-index: 2;
    }

        /* .video-play-btn:hover {
            background: #fff;
            transform: translate(-50%, -50%) scale(1.1);
        } */

        .video-play-btn svg {
            width: 15px;
            height: 15px;
            color: #000;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .video-play-btn {
                 right: 10px; 
            }
       .video-player {
            top: 60%;
        
        }
            .hero h1 {
                font-size: 4.5rem;
            }
            .logo-text {
                font-size: 1rem;
            }
            .static-svg {
                width: 20px;
                height: 20px;
            }
            .header-logo {
                top: 15px;
                left: 15px;
            }
            .btn {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
            .video-section {
                padding: 40px 15px;
            }
            .video-title {
                font-size: 1.8rem; /* 移动端标题缩小 */
            }
            .video-subtitle {
                font-size: 1rem; /* 移动端副标题缩小 */
            }
            .video-container {
                max-width: 100%;
                border-radius: 12px;
                height: 400px;
            }
            .video-play-btn {
                width: 30px;
                height: 30px;
            }
        }

        .footer-iframe {
            width: 100%;
            border: none;
            height: auto;
            min-height: 400px;
            display: block;
            z-index: 20;
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 3.5rem;
            }
            .logo-text {
                font-size: 1rem;
            }
            .static-svg {
                width: 20px;
                height: 20px;
            }
            .header-logo {
                top: 15px;
                left: 15px;
            }
            .btn {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
            .footer-iframe {
                min-height: 1200px;
            }
        }

        /* 轮播 */
        .marquee-section {
            width: 100%;
            background: #0a0a0a;
            border-top: none;
            border-bottom: 0.5px solid #0d1117;
            padding: 40px 0;
            overflow: hidden;
            position: relative; 
            z-index: 10;
            display: block;
        }

        .marquee-container {
            position: relative;
            width: 100%;
            height: 100%;
        }

        .marquee-track {
            display: flex;
            animation: scroll 30s linear infinite;
            width: fit-content;
        }

        .marquee-track:hover {
            animation-play-state: paused;
        }

        @keyframes scroll {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }

        .logo-item {
            flex-shrink: 0;
            padding: 0 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0.5;
            transition: opacity 0.3s ease;
            filter: grayscale(100%) brightness(2);
        }

        .logo-item:hover {
            opacity: 1;
            filter: grayscale(0%) brightness(1);
        }

        .logo-item svg,
        .logo-item img {
            height: 32px;
            width: auto;
            max-width: 140px;
        }

        .marquee-container::before,
        .marquee-container::after {
            content: '';
            position: absolute;
            top: 0;
            width: 120px;
            height: 100%;
            z-index: 2;
            pointer-events: none;
        }

        .marquee-container::before {
            left: 0;
            background: linear-gradient(to right, #0d1117 0%, transparent 100%);
        }

        .marquee-container::after {
            right: 0;
            background: linear-gradient(to left, #0d1117 0%, transparent 100%);
        }

        @media (max-width: 768px) {
            .logo-item {
                padding: 0 24px;
            }

            .logo-item svg,
            .logo-item img {
                height: 24px;
                max-width: 100px;
            }

            .marquee-container::before,
            .marquee-container::after {
                width: 60px;
            }
        }

        /* 布局优化 */
        .footer-container {
            position: relative;
            z-index: 15;
            width: 100%;
        }