* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            /* 禁止鼠标选中 */
            user-select: none;
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.6;
            color: #333;
            overflow-x: hidden;
        }

        /* 禁止图片拖拽 */
        img {
            -webkit-user-drag: none;
            -khtml-user-drag: none;
            -moz-user-drag: none;
            -o-user-drag: none;
            user-drag: none;
        }

        /* 复制链接弹窗 */
        .copy-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.7);
            z-index: 9999;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .copy-modal.show {
            display: flex;
        }

        .copy-modal-content {
            background: white;
            border-radius: 20px;
            padding: 30px 25px;
            max-width: 340px;
            width: 100%;
            text-align: center;
            box-shadow: 0 10px 40px rgba(0,0,0,0.3);
            animation: modalSlideIn 0.3s ease-out;
        }

        @keyframes modalSlideIn {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .copy-modal-icon {
            font-size: 48px;
            margin-bottom: 15px;
        }

        .copy-modal h3 {
            color: #333;
            font-size: 20px;
            margin-bottom: 15px;
            font-weight: 600;
        }

        .copy-modal p {
            color: #666;
            font-size: 15px;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .copy-link-box {
            background: #f5f7fa;
            border: 2px dashed #0F6B63;
            border-radius: 12px;
            padding: 15px;
            margin-bottom: 20px;
            word-break: break-all;
            font-size: 14px;
            color: #0F6B63;
            font-weight: 500;
        }

        .copy-btn {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, #0F6B63 0%, #0a4f49 100%);
            color: white;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            margin-bottom: 10px;
            transition: transform 0.2s;
        }

        .copy-btn:active {
            transform: scale(0.98);
        }

        .copy-btn.copied {
            background: #4CAF50;
        }

        .close-modal-btn {
            width: 100%;
            padding: 12px;
            background: #f5f7fa;
            color: #666;
            border: none;
            border-radius: 12px;
            font-size: 15px;
            cursor: pointer;
        }

        /* PC端 - 简单官网 */
        .pc-view {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            background: linear-gradient(135deg, #0F6B63 0%, #0a4f49 100%);
        }

        .pc-content {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 40px 20px;
        }

        .pc-title {
            text-align: center;
            color: white;
        }

        .pc-logo-container {
            position: relative;
            display: inline-block;
            margin-bottom: 20px;
        }

        .pc-logo-container .trademark {
            position: absolute;
            top: -5px;
            right: 8px;
            font-size: 24px;
            color: white;
            font-weight: bold;
            opacity: 0.9;
        }

        .pc-logo {
            width: 280px; /* 放大Logo */
            height: auto;
            display: block;
            filter: drop-shadow(0 10px 15px rgba(0,0,0,0.2));
            /* 移除了动画效果 */
        }

        .pc-title h1 {
            font-size: 72px;
            font-weight: 800;
            margin-bottom: 20px;
            text-shadow: 0 4px 20px rgba(0,0,0,0.2);
            letter-spacing: 2px;
        }

        .pc-title p {
            font-size: 24px;
            opacity: 0.9;
            font-weight: 300;
        }

        .pc-footer {
            background: rgba(0,0,0,0.2);
            color: white;
            text-align: center;
            padding: 20px;
            font-size: 14px;
        }

        .pc-footer a {
            color: white;
            text-decoration: none;
            margin: 0 5px;
        }

        .pc-footer a:hover {
            text-decoration: underline;
        }

        /* 移动端 - APP下载页 */
        .mobile-view {
            display: none;
            min-height: 100vh;
            background: linear-gradient(135deg, #0F6B63 0%, #0a4f49 100%);
            padding: 20px;
        }

        .download-container {
            background: white;
            border-radius: 20px;
            padding: 40px 30px;
            max-width: 400px;
            margin: 60px auto;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            text-align: center;
        }

        .app-icon {
            width: 100px;
            height: 100px;
            border-radius: 22px;
            margin: 0 auto 20px;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            overflow: hidden;
        }

        .app-icon img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .download-container h1 {
            font-size: 28px;
            color: #333;
            margin-bottom: 10px;
        }

        .version {
            color: #999;
            font-size: 14px;
            margin-bottom: 30px;
        }

        .download-btn {
            display: block;
            width: 100%;
            padding: 16px;
            background: linear-gradient(135deg, #0F6B63 0%, #0a4f49 100%);
            color: white;
            border: none;
            border-radius: 12px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            margin-bottom: 15px;
        }

        .download-btn:active {
            transform: scale(0.98);
        }

        .platform-info {
            margin-top: 20px;
            padding: 15px;
            background: #e8f5e9;
            border-radius: 8px;
            font-size: 14px;
            color: #2e7d32;
        }

        .tips {
            background: #f5f7fa;
            border-radius: 12px;
            padding: 20px;
            margin-top: 20px;
            text-align: left;
            display: none;
        }

        .tips-title {
            font-size: 16px;
            font-weight: 600;
            color: #333;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
        }

        .tips-title::before {
            content: "💡";
            margin-right: 8px;
        }

        .tips-content {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }

        .tips-content ol {
            padding-left: 20px;
            margin-top: 10px;
        }

        .tips-content li {
            margin-bottom: 8px;
        }

        .mobile-footer {
            text-align: center;
            color: white;
            padding: 20px;
            font-size: 12px;
            opacity: 0.8;
        }

        .mobile-footer a {
            color: white;
            text-decoration: none;
        }

        /* 响应式设计 - 移动端显示APP下载页，PC端显示官网 */
        @media (max-width: 768px) {
            .pc-view {
                display: none !important;
            }

            .mobile-view {
                display: block !important;
            }

            .pc-title h1 {
                font-size: 36px;
            }
        }

        @media (max-width: 480px) {
            .download-container {
                padding: 30px 20px;
                margin: 40px auto;
            }

            .app-icon {
                width: 80px;
                height: 80px;
                font-size: 40px;
            }

            .download-container h1 {
                font-size: 24px;
            }
        }