/* ===== 全局重置 ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html,
        body {
            width: 100%;
            min-height: 100vh;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
            /*background: #1a1a2e;*/
            overflow-x: hidden;
            -webkit-overflow-scrolling: touch;
        }

    
        .hero-section {
            position: relative;
            width: 100%;
            height: 100vh;
            min-height: 500px;
            background: url('../img/Blp.jpg') center center / cover no-repeat;
            flex-shrink: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            z-index: 1;
            pointer-events: none;
        }

     
        .footer {
            position: relative;
            z-index: 2;
            background: #fafafa;
            padding: 20px 24px 30px;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer p {
            font-size: 12px;
            color: #858585;
            line-height: 1.8;
            max-width: 600px;
            margin: 0 auto;
        }

        .footer .links {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }

        .footer .links a {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.3);
            text-decoration: none;
            transition: color 0.2s;
        }

        .footer .links a:hover {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer .brand {
            font-size: 13px;
            color: rgb(33 33 33 / 58%);
            letter-spacing: 1px;
            margin-bottom: 6px;
        }


        .default-popup {
            position: fixed;
            bottom: 18px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 32px);
            max-width: 480px;
            max-height: 38vh;
            background: #ffffff;
            border-radius: 20px;
            padding: 0px 18px 12px;
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.35);
            z-index: 998;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: flex-end;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            overflow: visible;
        }

        .default-popup.hidden {
            transform: translateX(-50%) translateY(120%);
            opacity: 0;
            pointer-events: none;
        }

        .popup-app-icon {
            width: 80px;
            height: 94px;
            background: transparent;
            box-shadow: none;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            overflow: hidden;
            margin-top: -44px;
            margin-bottom: 0px;
            position: relative;
            z-index: 10;
        }

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

        .popup-body {
            display: flex;
            flex-direction: column;
            align-items: center;
            width: 100%;
            padding-top: 0px;
        }

        .popup-app-name {
            font-size: 20px;
            font-weight: 700;
            color: #1a1a2e;
            margin-bottom: 0px;
            line-height: 1.2;
        }

        .popup-app-desc {
            font-size: 13px;
            color: #999;
            margin-bottom: 0px;
            line-height: 1.3;
        }

        .popup-app-version {
            font-size: 12px;
            color: #bbb;
            margin-bottom: 6px;
            line-height: 1.3;
        }

        .popup-download-btn {
            width: 100%;
            padding: 12px 0;
            background: linear-gradient(135deg, #ec1b3a, #ed1a3b);
            border: none;
            border-radius: 50px;
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 4px 20px rgba(220, 38, 38, 0.4);
            -webkit-tap-highlight-color: transparent;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .popup-download-btn:active {
            transform: scale(0.96);
            box-shadow: 0 2px 10px rgba(220, 38, 38, 0.3);
        }

        /* 下载按钮上的图标图片 */
        .popup-download-btn .btn-icon {
            width: 20px;
            height: 20px;
            object-fit: contain;
            flex-shrink: 0;
        }

        .popup-footer-info {
            text-align: center;
            margin-top: 4px;
            font-size: 10px;
            color: #bbb;
            line-height: 1.5;
        }

        .popup-footer-info .sep {
            margin: 0 4px;
            color: #ddd;
        }


        .mobile-download-bar {
            display: flex;
            position: fixed;
            bottom: 18px;
            left: 50%;
            transform: translateX(-50%) translateY(120%);
            width: calc(100% - 32px);
            max-width: 480px;
            background: linear-gradient(90deg, #fee, #fff);
            border-radius: 16px;
            padding: 16px 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            opacity: 0;
            pointer-events: none;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .mobile-download-bar.show {
            opacity: 1;
            pointer-events: auto;
            transform: translateX(-50%) translateY(0);
        }

        .mobile-download-left {
            display: flex;
            align-items: center;
            gap: 12px;
            flex: 1;
            min-width: 0;
        }

        .mobile-app-icon {
            width: 68px;
            height: 68px;
            background: transparent;
            box-shadow: none;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            overflow: hidden;
        }

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

        .mobile-download-text {
            flex: 1;
            min-width: 0;
        }

        .mobile-download-title {
            font-size: 16px;
            font-weight: 700;
            color: #111827;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .mobile-download-subtitle {
            font-size: 12px;
            color: #6b7280;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-top: 2px;
        }

        .mobile-download-subtitle .highlight {
            font-weight: 700;
            color: #dc2626;
        }

        .mobile-download-btn {
            flex-shrink: 0;
            padding: 12px 28px;
            background: linear-gradient(135deg, #e52730, #ff4d57);
            color: #fff;
            border-radius: 24px;
            font-size: 15px;
            font-weight: 700;
            text-decoration: none;
            box-shadow: 0 8px 24px rgba(229, 39, 48, 0.4);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
            border: none;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            -webkit-tap-highlight-color: transparent;
        }

        .mobile-download-btn:active {
            transform: scale(0.94);
            box-shadow: 0 4px 12px rgba(229, 39, 48, 0.25);
        }

        /* 底部悬浮按钮上的图标图片 */
        .mobile-download-btn .btn-icon {
            width: 18px;
            height: 18px;
            object-fit: contain;
            flex-shrink: 0;
        }

        @media (max-width: 480px) {
            .default-popup {
                padding: 0px 14px 10px;
                bottom: 14px;
                width: calc(100% - 20px);
                border-radius: 16px;
                max-height: 36vh;
            }

            .popup-app-icon {
                width: 68px;
                height: 80px;
                margin-top: -36px;
                margin-bottom: 0px;
            }

            .popup-app-name {
                font-size: 18px;
            }
            .popup-app-desc {
                font-size: 12px;
            }
            .popup-app-version {
                font-size: 11px;
                margin-bottom: 4px;
            }
            .popup-download-btn {
                padding: 10px 0;
                font-size: 15px;
            }
            .popup-download-btn .btn-icon {
                width: 18px;
                height: 18px;
            }
            .popup-footer-info {
                font-size: 9px;
                margin-top: 3px;
            }

            .mobile-download-bar {
                padding: 14px 16px;
                bottom: 14px;
                width: calc(100% - 20px);
                border-radius: 14px;
            }
            .mobile-app-icon {
                width: 56px;
                height: 56px;
            }
            .mobile-download-title {
                font-size: 14px;
            }
            .mobile-download-subtitle {
                font-size: 11px;
            }
            .mobile-download-btn {
                padding: 10px 18px;
                font-size: 13px;
            }
            .mobile-download-btn .btn-icon {
                width: 16px;
                height: 16px;
            }
            .footer {
                padding: 16px 16px 24px;
            }
            .footer p {
                font-size: 11px;
            }
            .footer .links a {
                font-size: 11px;
            }
        }

        @media (max-width: 360px) {
            .default-popup {
                padding: 0px 12px 8px;
                max-height: 34vh;
                border-radius: 14px;
            }

            .popup-app-icon {
                width: 56px;
                height: 66px;
                margin-top: -28px;
                margin-bottom: 0px;
            }

            .popup-app-name {
                font-size: 16px;
            }
            .popup-app-desc {
                font-size: 11px;
            }
            .popup-app-version {
                font-size: 10px;
            }
            .popup-download-btn {
                padding: 8px 0;
                font-size: 14px;
            }
            .popup-download-btn .btn-icon {
                width: 16px;
                height: 16px;
            }
            .popup-footer-info {
                font-size: 9px;
            }

            .mobile-download-bar {
                padding: 12px 14px;
            }
            .mobile-app-icon {
                width: 46px;
                height: 46px;
            }
            .mobile-download-btn {
                padding: 8px 14px;
                font-size: 12px;
            }
            .mobile-download-btn .btn-icon {
                width: 14px;
                height: 14px;
            }
            .mobile-download-title {
                font-size: 12px;
            }
            .mobile-download-subtitle {
                font-size: 10px;
            }
        }

        /* 适配全面屏/刘海屏底部安全区 */
        @supports (padding-bottom: env(safe-area-inset-bottom)) {
            .default-popup {
                bottom: calc(18px + env(safe-area-inset-bottom));
            }
            .mobile-download-bar {
                bottom: calc(18px + env(safe-area-inset-bottom));
            }
            .footer {
                padding-bottom: calc(30px + env(safe-area-inset-bottom));
            }
        }
        @supports (padding-bottom: constant(safe-area-inset-bottom)) {
            .default-popup {
                bottom: calc(18px + constant(safe-area-inset-bottom));
            }
            .mobile-download-bar {
                bottom: calc(18px + constant(safe-area-inset-bottom));
            }
            .footer {
                padding-bottom: calc(30px + constant(safe-area-inset-bottom));
            }
        }