.lang-switch {
                position: fixed;
                top: 12px;
                right: 140px;
                z-index: 9998;
                display: inline-block;
                font-size: 14px;
                font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
                cursor: pointer;
                user-select: none;
                background: rgba(79, 56, 116, 0.92);
                backdrop-filter: blur(4px);
                border-radius: 8px;
                padding: 4px 6px;
                border: 1px solid rgba(255, 255, 255, 0.15);
                box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
                transition: background 0.2s, box-shadow 0.2s;
            }
            .lang-switch:hover {
                background: rgba(79, 56, 116, 1);
                box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
            }
            .lang-switch-current {
                display: flex;
                align-items: center;
                gap: 4px;
                padding: 4px 10px 4px 12px;
                border-radius: 6px;
                color: #fff;
                font-weight: 500;
                font-size: 13px;
                letter-spacing: 0.3px;
                list-style: none;
                outline: none;
                cursor: pointer;
            }
            .lang-switch-current::-webkit-details-marker {
                display: none;
            }
            .lang-switch-current .arrow {
                font-size: 11px;
                opacity: 0.7;
                margin-left: 2px;
                transition: transform 0.25s ease;
                display: inline-block;
            }
            .lang-switch[open] .lang-switch-current .arrow {
                transform: rotate(180deg);
            }
            .lang-dropdown {
                position: absolute;
                top: calc(100% + 6px);
                right: 0;
                min-width: 120px;
                background: #fff;
                border-radius: 10px;
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
                padding: 6px 0;
                margin: 0;
                list-style: none;
                border: 1px solid rgba(0, 0, 0, 0.06);
                overflow: hidden;
                animation: dropdownIn 0.2s ease;
            }
            @keyframes dropdownIn {
                from {
                    opacity: 0;
                    transform: translateY(-8px) scale(0.96);
                }
                to {
                    opacity: 1;
                    transform: translateY(0) scale(1);
                }
            }
            .lang-dropdown li {
                padding: 8px 18px;
                color: #333;
                font-size: 14px;
                font-weight: 500;
                transition: background 0.15s, color 0.15s;
                cursor: pointer;
                white-space: nowrap;
                display: flex;
                align-items: center;
                gap: 8px;
            }
            .lang-dropdown li:hover {
                background: #f0ebf7;
            }
            .lang-dropdown li.active {
                color: #4F3874;
                background: #f0ebf7;
            }
            .lang-dropdown li.active::before {
                content: "✓ ";
                font-weight: 700;
                color: #4F3874;
            }
            .lang-dropdown li .badge {
                font-size: 11px;
                opacity: 0.5;
                font-weight: 400;
            }

            /* ================================================================
               “网站导航” 按钮 — 桌面端隐藏
               ================================================================ */
            .site-nav-toggle {
                position: fixed;
                top: 12px;
                right: 50px;
                z-index: 9998;
                display: none;
                align-items: center;
                justify-content: center;
                padding: 6px 18px;
                height: 40px;
                background: rgba(79, 56, 116, 0.92);
                backdrop-filter: blur(4px);
                border: 1px solid rgba(255, 255, 255, 0.15);
                border-radius: 8px;
                box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
                cursor: pointer;
                transition: background 0.2s, box-shadow 0.2s;
                outline: none;
                -webkit-tap-highlight-color: transparent;
                font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
                font-size: 18px;
                font-weight: 600;
                color: #fff;
                letter-spacing: 0.5px;
                white-space: nowrap;
                user-select: none;
            }
            .site-nav-toggle:hover {
                background: rgba(79, 56, 116, 1);
                box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
            }
            .site-nav-toggle .nav-arrow {
                font-size: 13px;
                opacity: 0.8;
                margin-left: 6px;
                transition: transform 0.25s ease;
                display: inline-block;
            }
            .site-nav-toggle.active .nav-arrow {
                transform: rotate(180deg);
            }

            /* ---- “网站导航” 下拉菜单面板 ---- */
            .site-nav-dropdown {
                position: fixed;
                top: 58px;
                right: 12px;
                z-index: 9997;
                min-width: 180px;
                max-width: 88vw;
                background: #fff;
                border-radius: 12px;
                box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
                padding: 8px 0;
                border: 1px solid rgba(0, 0, 0, 0.06);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-10px) scale(0.96);
                transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
                overflow: hidden;
                list-style: none;
                margin: 0;
            }
            .site-nav-dropdown.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0) scale(1);
            }
            .site-nav-dropdown li {
                display: block;
                margin: 0;
                padding: 0;
                border-bottom: 1px solid #f5f5f5;
            }
            .site-nav-dropdown li:last-child {
                border-bottom: none;
            }
            .site-nav-dropdown li a {
                display: flex;
                align-items: center;
                padding: 13px 20px;
                color: #333;
                font-size: 15px;
                font-weight: 500;
                text-decoration: none;
                transition: background 0.15s, color 0.15s;
                gap: 10px;
                letter-spacing: 0.3px;
            }
            .site-nav-dropdown li a:hover,
            .site-nav-dropdown li a:active {
                background: #f0ebf7;
                color: #4F3874;
            }
            .site-nav-dropdown li a.active {
                color: #4F3874;
                background: #f0ebf7;
            }
            .site-nav-dropdown li a.active::before {
                content: "• ";
                font-weight: 700;
                color: #4F3874;
            }
            .site-nav-dropdown li a .nav-icon {
                font-size: 17px;
                opacity: 0.7;
                width: 24px;
                text-align: center;
                flex-shrink: 0;
            }

            /* ---- 遮罩 ---- */
            .site-nav-overlay {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                z-index: 9996;
                background: rgba(0, 0, 0, 0.25);
                opacity: 0;
                visibility: hidden;
                transition: opacity 0.3s ease, visibility 0.3s ease;
                backdrop-filter: blur(2px);
                -webkit-backdrop-filter: blur(2px);
            }
            .site-nav-overlay.open {
                opacity: 1;
                visibility: visible;
            }

            /* ================================================================
               移动端适配 (≤768px) — 两按钮统一尺寸，并排，间距30px
               ================================================================ */
            @media (max-width: 768px) {
                /* ---- 语言切换：与网站导航统一尺寸，并排间距30px ---- */
                .lang-switch {
                    top: 8px;
                    right: 120px;
                    padding: 6px 18px;
                    height: 40px;
                    font-size: 18px;
                    font-weight: 600;
                    border-radius: 8px;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    box-sizing: border-box;
                }
                .lang-switch-current {
                    padding: 0;
                    font-size: 18px;
                    font-weight: 600;
                    gap: 4px;
                }
                .lang-switch-current .arrow {
                    font-size: 14px;
                    margin-left: 6px;
                }
                .lang-dropdown {
                    min-width: 120px;
                    right: 0;
                }
                .lang-dropdown li {
                    padding: 10px 18px;
                    font-size: 15px;
                }
                .lang-dropdown li .badge {
                    font-size: 12px;
                }

                /* ---- 网站导航：与语言切换统一尺寸 ---- */
                .site-nav-toggle {
                    display: flex;
                    top: 8px;
                    right: 10px;
                    height: 40px;
                    padding: 6px 18px;
                    font-size: 18px;
                    border-radius: 8px;
                    box-sizing: border-box;
                }
                .site-nav-toggle .nav-arrow {
                    font-size: 14px;
                }
                .site-nav-dropdown {
                    top: 52px;
                    right: 10px;
                    min-width: 180px;
                    max-width: 85vw;
                }
                .site-nav-dropdown li a {
                    padding: 12px 18px;
                    font-size: 15px;
                }
                .site-nav-dropdown li a .nav-icon {
                    font-size: 17px;
                    width: 24px;
                }

                /* ===== 移动端弹窗尺寸缩小 + 关闭按钮增强 ===== */
                .modal-container {
                    width: 92%;
                    max-width: 440px;
                    height: 70vh;
                    max-height: 520px;
                    border-radius: 12px;
                }

                .modal-close {
                    font-size: 26px;
                    color: #555;
                    background: rgba(0, 0, 0, 0.08);
                    border-radius: 50%;
                    width: 44px;
                    height: 44px;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    padding: 0;
                    margin: -6px -2px 0 0;
                    flex-shrink: 0;
                    border: none;
                    cursor: pointer;
                }

                .modal-header {
                    padding: 12px 16px;
                }
                .modal-title {
                    font-size: 16px;
                }

                .withdraw-form {
                    padding: 20px 16px 16px;
                }
                .withdraw-form .form-group input {
                    font-size: 16px;
                    padding: 12px 14px;
                }
            }

            @media (max-width: 480px) {
                /* ---- 语言切换：小屏统一尺寸，间距30px ---- */
                .lang-switch {
                    top: 6px;
                    right: 106px;
                    padding: 3px 6px;
                    height: 36px;
                    font-size: 12px;
                    border-radius: 6px;
                }
                .lang-switch-current {
                    font-size: 12px;
                }
                .lang-switch-current .arrow {
                    font-size: 12px;
                    margin-left: 4px;
                }
                .lang-dropdown {
                    min-width: 110px;
                }
                .lang-dropdown li {
                    padding: 8px 16px;
                    font-size: 14px;
                }
                .lang-dropdown li .badge {
                    font-size: 11px;
                }

                /* ---- 网站导航：小屏统一尺寸 ---- */
                .site-nav-toggle {
                    top: 6px;
                    right: 5px;
                    height: 36px;
                    padding: 3px 8px;
                    font-size: 12px;
                    border-radius: 6px;
                }
                .site-nav-toggle .nav-arrow {
                    font-size: 13px;
                    margin-left: 4px;
                }
                .site-nav-dropdown {
                    top: 46px;
                    right: 8px;
                    min-width: 160px;
                    max-width: 82vw;
                    border-radius: 10px;
                    padding: 6px 0;
                }
                .site-nav-dropdown li a {
                    padding: 10px 16px;
                    font-size: 14px;
                    gap: 8px;
                }
                .site-nav-dropdown li a .nav-icon {
                    font-size: 16px;
                    width: 22px;
                }

                /* ===== 小屏弹窗进一步缩小 ===== */
                .modal-container {
                    width: 94%;
                    max-width: 380px;
                    height: 60vh;
                    max-height: 400px;
                    border-radius: 10px;
                }

                .modal-close {
                    font-size: 24px;
                    width: 38px;
                    height: 38px;
                    margin: -4px -2px 0 0;
                    background: rgba(0, 0, 0, 0.08);
                    border-radius: 50%;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    padding: 0;
                    border: none;
                    cursor: pointer;
                }

                .modal-header {
                    padding: 10px 14px;
                }
                .modal-title {
                    font-size: 15px;
                }

                .withdraw-form {
                    padding: 16px 14px 14px;
                }
                .withdraw-form .form-group {
                    margin-bottom: 14px;
                }
                .withdraw-form .form-group input {
                    padding: 12px 12px;
                }
                .withdraw-form .btn-confirm {
                    padding: 14px;
                    font-size: 17px;
                }
            }

            /* ================================================================
               以下为原有弹窗、Toast 等样式（桌面端保持不变）
               ================================================================ */
            .modal-overlay {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0, 0, 0, 0.6);
                z-index: 9999;
                display: none;
                justify-content: center;
                align-items: center;
                animation: fadeIn 0.3s ease;
            }
            .modal-container {
                background: #fff;
                border-radius: 12px;
                width: 90%;
                max-width: 480px;
                height: 80vh;
                max-height: 620px;
                display: flex;
                flex-direction: column;
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
                animation: slideDown 0.3s ease;
                overflow: hidden;
            }
            .modal-header {
                display: flex;
                justify-content: space-between;
                align-items: center;
                padding: 14px 20px;
                border-bottom: 1px solid #eee;
                flex-shrink: 0;
            }
            .modal-title {
                font-size: 18px;
                font-weight: 600;
                color: #333;
            }
            .modal-close {
                background: none;
                border: none;
                font-size: 28px;
                line-height: 1;
                color: #999;
                cursor: pointer;
                padding: 0 8px;
                transition: color 0.2s;
            }
            .modal-close:hover {
                color: #333;
            }
            .modal-body {
                flex: 1;
                padding: 0;
                overflow: hidden;
            }
            .modal-body iframe {
                width: 100%;
                height: 100%;
                border: none;
                display: block;
            }

            .withdraw-form {
                padding: 24px 20px 20px;
                display: flex;
                flex-direction: column;
                height: 100%;
                overflow-y: auto;
            }
            .withdraw-form .form-group {
                margin-bottom: 18px;
            }
            .withdraw-form .form-group label {
                display: block;
                font-size: 14px;
                font-weight: 500;
                color: #333;
                margin-bottom: 6px;
            }
            .withdraw-form .form-group input {
                width: 100%;
                padding: 10px 14px;
                border: 1px solid #ddd;
                border-radius: 6px;
                font-size: 15px;
                box-sizing: border-box;
                transition: border-color 0.2s;
                background: #fafafa;
            }
            .withdraw-form .form-group input:focus {
                border-color: #4F3874;
                outline: none;
                background: #fff;
                box-shadow: 0 0 0 3px rgba(79, 56, 116, 0.1);
            }
            .withdraw-form .form-group input::placeholder {
                color: #bbb;
            }
            .withdraw-form .form-actions {
                margin-top: auto;
                padding-top: 10px;
            }
            .withdraw-form .btn-confirm {
                width: 100%;
                padding: 12px;
                background: #4F3874;
                color: #fff;
                border: none;
                border-radius: 6px;
                font-size: 16px;
                font-weight: 600;
                cursor: pointer;
                transition: background 0.2s;
            }
            .withdraw-form .btn-confirm:hover {
                background: #3d2b5a;
            }
            .withdraw-form .btn-confirm:active {
                transform: scale(0.98);
            }
            .withdraw-form .form-tip {
                font-size: 12px;
                color: #999;
                margin-top: 12px;
                text-align: center;
            }

            @keyframes fadeIn {
                from {
                    opacity: 0;
                }
                to {
                    opacity: 1;
                }
            }
            @keyframes slideDown {
                from {
                    opacity: 0;
                    transform: translateY(-30px) scale(0.95);
                }
                to {
                    opacity: 1;
                    transform: translateY(0) scale(1);
                }
            }
            @keyframes toastFadeOut {
                0% {
                    opacity: 1;
                    transform: translate(-50%, -50%) scale(1);
                }
                100% {
                    opacity: 0;
                    transform: translate(-50%, -50%) scale(0.9);
                }
            }
            .toast-message.hide {
                animation: toastFadeOut 0.4s ease forwards;
            }

            .toast-message {
                position: fixed;
                top: 50%;
                left: 50%;
                transform: translate(-50%, -50%);
                background: rgba(0, 0, 0, 0.78);
                color: #fff;
                padding: 20px 36px;
                border-radius: 10px;
                font-size: 17px;
                z-index: 10000;
                text-align: center;
                max-width: 80%;
                animation: fadeIn 0.3s ease;
                pointer-events: none;
                box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
                line-height: 1.6;
            }
            .toast-message .toast-icon {
                font-size: 32px;
                display: block;
                margin-bottom: 8px;
            }

            .nav .ma span,
            .headup .lk a span,
            .fixedls .lk a span {
                font-weight: 700 !important;
                font-size: 17px !important;
            }
            @media (max-width: 768px) {
                .nav .ma span,
                .headup .lk a span,
                .fixedls .lk a span {
                    font-size: 15px !important;
                }
            }
            @media (max-width: 480px) {
                .nav .ma span,
                .headup .lk a span,
                .fixedls .lk a span {
                    font-size: 14px !important;
                }
            }