/* ===== 遮罩层（默认隐藏） ===== */
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255,255,255,0.55);
            z-index: -1;
            pointer-events: none;
            transition: background 0.4s ease;
            opacity: 0;
            visibility: hidden;
        }
        /* 遮罩启用时显示 */
        body.overlay-enabled::before {
            opacity: 1;
            visibility: visible;
        }
        /* 深色背景遮罩 */
        body.dark-overlay.overlay-enabled::before {
            background: rgba(0,0,0,0.6);
        }


        #panel {
            width: 100%;
            background: #fff;
            border: 1px solid #e6e9ed;
            padding: 16px 12px;
            box-sizing: border-box;
            margin-top: 16px;
            border-radius: 16px;
            box-shadow: 0 4px 16px rgba(0,0,0,0.04);
            display: none;
            max-height: 500px;
            overflow-y: auto;
            scroll-behavior: smooth;
        }

        /* ===== 皮肤缩略图 ===== */
        .my_skin {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            padding: 0;
            margin: 0 0 18px 0;
            list-style: none;
        }
        .my_skin li {
            flex: 1 1 calc(20% - 12px);
            min-width: 100px;
            max-width: 160px;
        }
        .my_skin li a {
            display: block;
            text-decoration: none;
            color: #1e293b;
            text-align: center;
            border: 3px solid transparent;
            padding: 6px 4px 8px 4px;
            border-radius: 12px;
            background: #fafafa;
            transition: 0.15s;
            cursor: pointer;
        }
        .my_skin li a:hover {
            background: #f0f5ff;
            border-color: #b6d4fe;
        }
        .skin-preview {
            width: 100%;
            height: 80px;
            border-radius: 8px;
            display: block;
            margin-bottom: 6px;
            border: 1px solid #ddd;
            background-size: cover !important;
            background-position: center top !important;
            background-repeat: no-repeat !important;
        }
        .my_skin li a span {
            font-size: 0.85rem;
            font-weight: 500;
            display: block;
            line-height: 1.4;
        }
        .my_skin li a.selected {
            border: 3px solid #0099ff !important;
            background: #e6f2ff !important;
            box-shadow: 0 2px 12px rgba(0,153,255,0.25);
        }

        /* ===== 底部导航【新增分类高亮样式】 ===== */
        .skinnav ul {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            padding: 0;
            margin: 0 0 14px 0;
            list-style: none;
        }
        .skinnav ul li a {
            display: inline-block;
            padding: 6px 16px;
            background: #f1f4f8;
            color: #1e293b;
            text-decoration: none;
            border-radius: 30px;
            font-size: 0.9rem;
            transition: 0.15s;
            border: 1px solid transparent;
            cursor: pointer;
        }
        /* 激活分类高亮 */
        .skinnav ul li a.active-category {
            background: #0099ff;
            color: #fff;
            border-color: #0099ff;
        }
        .skinnav ul li a:hover {
            background: #0099ff;
            color: #fff;
            border-color: #0099ff;
        }
        .skinbtns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            margin-top: 4px;
        }
        .skinbtns a {
            display: inline-block;
            padding: 8px 20px;
            text-decoration: none;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.9rem;
            transition: 0.15s;
            border: 1px solid transparent;
            cursor: pointer;
        }
        .save-skin {
            background: #0b1a2a;
            color: #fff;
        }
        .save-skin:hover {
            background: #1e3347;
        }
        .btn-reset {
            background: #eef2f6;
            color: #1e293b;
        }
        .btn-reset:hover {
            background: #dce2ea;
        }

        /* ===== 遮罩开关按钮样式 ===== */
        .overlay-toggle-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px 6px 10px;
            background: #eef2f6;
            color: #1e293b;
            border: 1px solid #dce2ea;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: 0.2s;
            user-select: none;
        }
        .overlay-toggle-btn:hover {
            background: #dce2ea;
        }
        .overlay-toggle-btn .status-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #999;
            transition: 0.2s;
            flex-shrink: 0;
        }
        .overlay-toggle-btn .status-dot.on {
            background: #22c55e;
        }
        .overlay-toggle-btn .status-dot.off {
            background: #ef4444;
        }
        .overlay-toggle-btn .status-text {
            font-size: 0.8rem;
            min-width: 20px;
        }

        /* 未保存提示 */
        .unsaved-tip {
            margin-top: 12px;
            padding: 6px 14px;
            background: #fff3cd;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #856404;
            display: none;
            border: 1px solid #ffc107;
        }
        .unsaved-tip.show {
            display: inline-block;
        }

        @media screen and (max-width:768px) {
            .my_skin li {
                flex: 1 1 calc(33.3% - 10px);
                min-width: 80px;
            }
            .skin-preview {
                height: 60px;
            }
            .skinbtns {
                gap: 8px;
            }
            .overlay-toggle-btn {
                font-size: 0.75rem;
                padding: 5px 10px 5px 8px;
            }
            .overlay-toggle-btn .status-dot {
                width: 8px;
                height: 8px;
            }
            #panel {
                max-height: 400px;
            }
        }
        @media screen and (max-width:480px) {
            .my_skin li {
                flex: 1 1 calc(50% - 8px);
                min-width: 70px;
                max-width: 140px;
            }
            #panel {
                padding: 12px 8px;
                max-height: 350px;
            }
            .skin-preview {
                height: 50px;
            }
            .skinbtns a {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .overlay-toggle-btn {
                font-size: 0.7rem;
                padding: 4px 8px 4px 6px;
            }
            .overlay-toggle-btn .status-dot {
                width: 7px;
                height: 7px;
            }
        }

        .toast-tip {
            margin-top: 12px;
            padding: 8px 14px;
            background: #eaf6ff;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #0057a3;
            display: inline-block;
        }