#loading-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: radial-gradient(circle at 50% 50%, #1a0033 0%, #0a001a 100%);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            z-index: 999999;
            /* 确保在所有内容之上 */
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            opacity: 1;
            transition: opacity 0.5s ease-out;
        }

        .loading-content {
            text-align: center;
            position: relative;
        }

        .loading-logo {
            font-family: 'Nunito', sans-serif;
            font-size: clamp(2.5rem, 8vw, 5rem);
            font-weight: 900;
            color: #00f57f;
            /* Cyber green */
            text-shadow: 0 0 10px rgba(0, 245, 127, 0.8), 0 0 20px rgba(0, 245, 127, 0.6);
            letter-spacing: 2px;
            margin-bottom: 20px;
            animation: glitch 1.5s infinite;
            text-transform: uppercase;
            -webkit-user-select: none;
            -moz-user-select: none;
            user-select: none;
        }

        .loading-logo::before,
        .loading-logo::after {
            content: 'NEWPLAY';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            text-shadow: 0 0 10px rgba(0, 245, 127, 0.8), 0 0 20px rgba(0, 245, 127, 0.6);
        }

        .loading-logo::before {
            left: -2px;
            text-shadow: 0 0 10px rgba(255, 16, 83, 0.8);
            /* Cyber pink */
            animation: glitch-left 1.5s infinite;
        }

        .loading-logo::after {
            left: 2px;
            text-shadow: 0 0 10px rgba(56, 189, 248, 0.8);
            /* Cyber blue */
            animation: glitch-right 1.5s infinite;
        }

        @keyframes glitch {

            0%,
            100% {
                transform: translate(0);
            }

            20%,
            80% {
                transform: translate(-2px, 2px);
            }

            40% {
                transform: translate(-2px, -2px);
            }

            60% {
                transform: translate(2px, 2px);
            }
        }

        @keyframes glitch-left {

            0%,
            100% {
                transform: translate(0);
            }

            20%,
            80% {
                transform: translate(2px, -2px);
            }

            40% {
                transform: translate(-2px, 2px);
            }

            60% {
                transform: translate(2px, -2px);
            }
        }

        @keyframes glitch-right {

            0%,
            100% {
                transform: translate(0);
            }

            20%,
            80% {
                transform: translate(-2px, 2px);
            }

            40% {
                transform: translate(2px, -2px);
            }

            60% {
                transform: translate(-2px, 2px);
            }
        }

        .loading-bar-container {
            width: clamp(200px, 70vw, 400px);
            height: 8px;
            background: rgba(0, 245, 127, 0.2);
            border-radius: 4px;
            overflow: hidden;
            margin-top: 20px;
            border: 1px solid rgba(0, 245, 127, 0.4);
            box-shadow: inset 0 0 8px rgba(0, 245, 127, 0.3);
        }

        .loading-bar {
            width: 0%;
            height: 100%;
            background: linear-gradient(90deg, rgba(0, 245, 127, 0.5), #00f57f);
            box-shadow: 0 0 15px #00f57f;
            border-radius: 4px;
            animation: progressBarAnim 2s infinite linear;
            transform-origin: left center;
        }

        @keyframes progressBarAnim {
            0% {
                width: 0%;
            }

            50% {
                width: 100%;
            }

            100% {
                width: 0%;
            }
        }

        /* 🚀 彻底隐藏 Number 输入框原生丑陋的白底上下箭头，符合 Web3 极简风格 */
        .hide-arrows::-webkit-outer-spin-button,
        .hide-arrows::-webkit-inner-spin-button {
            -webkit-appearance: none;
            margin: 0;
        }

        .hide-arrows {
            -moz-appearance: textfield;
        }

        /* 🚀 新增：赛博能量水滴/USDC 粒子收集流光特效 */
        .cyber-drop {
            position: fixed;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #ffffff;
            box-shadow:
                0 0 10px #35d7ff,
                0 0 20px #35d7ff,
                0 0 30px #a987ff,
                inset 0 0 4px rgba(0, 0, 0, 0.5);
            pointer-events: none;
            /* 绝对穿透，防误触 */
            z-index: 99999;
            opacity: 0;
            transform: scale(0);
            will-change: transform, opacity;
            /* 拒绝重排卡顿 */
        }