/* 遮罩层 */
        .seo-modal-mask {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(5px);
            z-index: 9999;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.4s ease;
        }

        .seo-modal-mask.show {
            opacity: 1;
            visibility: visible;
        }

        /* 弹窗容器 */
        .seo-modal-wrap {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 10000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            pointer-events: none;
        }

        .seo-modal-wrap.show {
            pointer-events: auto;
            display: flex !important;
        }

        .seo-modal-main {
            background: var(--white-color);
            border-radius: 16px;
            box-shadow: 0 20px 60px var(--shadow-hover);
            width: 100%;
            max-width: 420px;
            max-height: 90vh;
            overflow: hidden;
            opacity: 0;
            transform: scale(0.9) translateY(20px);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .seo-modal-wrap.show .seo-modal-main {
            opacity: 1;
            transform: scale(1) translateY(0);
        }

        /* 弹窗头部 */
        .seo-modal-header {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
            color: var(--white-color);
            padding: 24px;
            position: relative;
            text-align: center;
        }

        .seo-modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(255,255,255,0.2);
            border: none;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            color: var(--white-color);
            font-size: 16px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .seo-modal-close:hover {
            background: rgba(255,255,255,0.3);
            transform: rotate(90deg);
        }

        .seo-modal-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .seo-modal-subtitle {
            font-size: 13px;
            opacity: 0.9;
        }

        /* 弹窗内容 */
        .seo-modal-body {
            padding: 24px;
            position: relative;
            overflow: hidden;
            min-height: 400px;
        }

        /* 第一屏 */
        .screen-first {
            position: relative;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .screen-first.slide-out {
            opacity: 0;
            transform: translateX(-30px);
        }

        .offer-badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
            color: var(--white-color);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 16px;
            animation: pulse 2s infinite;
            text-align: center;
            width: 100%;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }

        .offer-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 8px;
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .offer-desc {
            color: var(--muted-color);
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .feature-list {
            list-style: none;
            margin-bottom: 20px;
        }

        .feature-list li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--dark-color);
            display: flex;
            align-items: center;
            opacity: 0;
            animation: fadeInUp 0.5s ease forwards;
        }

        .feature-list li:nth-child(1) { animation-delay: 0.1s; }
        .feature-list li:nth-child(2) { animation-delay: 0.2s; }
        .feature-list li:nth-child(3) { animation-delay: 0.3s; }
        .feature-list li:nth-child(4) { animation-delay: 0.4s; }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .feature-list li::before {
            content: '✓';
            color: var(--success-color);
            font-weight: bold;
            margin-right: 8px;
            font-size: 16px;
        }

        /* 联系方式 */
        .contact-box {
            background: var(--light-color);
            border-radius: 12px;
            padding: 16px;
            margin-bottom: 20px;
        }

        .contact-item {
            display: flex;
            align-items: center;
            padding: 12px;
            background: var(--white-color);
            border-radius: 8px;
            margin-bottom: 12px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .contact-item:hover {
            transform: translateX(5px);
            box-shadow: 0 4px 12px var(--shadow-color);
        }

        .contact-item:last-child {
            margin-bottom: 0;
        }

        .contact-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
            font-size: 16px;
            color: var(--white-color);
            flex-shrink: 0;
        }

        .contact-icon.wechat {
            background: linear-gradient(135deg, #07C160 0%, #029F45 100%);
        }

        .contact-icon.phone {
            background: linear-gradient(135deg, #1974D0 0%, #0D47A1 100%);
        }

        .contact-info {
            flex: 1;
        }

        .contact-label {
            font-size: 11px;
            color: var(--muted-color);
            margin-bottom: 2px;
        }

        .contact-value {
            font-size: 15px;
            font-weight: 500;
            color: var(--dark-color);
        }

        /* 倒计时 */
        .countdown-box {
            text-align: center;
            padding: 12px;
            background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
            border-radius: 8px;
            border: 1px solid var(--warning-color);
        }

        .countdown-text {
            font-size: 12px;
            color: var(--warning-color);
            margin-bottom: 4px;
            font-weight: 500;
        }

        .countdown-time {
            font-size: 20px;
            font-weight: 700;
            color: var(--danger-color);
            font-family: 'Courier New', monospace;
        }

        /* 第二屏 */
        .screen-second {
            <!-- position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0; -->
            padding: 24px;
            background: var(--white-color);
            opacity: 0;
            transform: translateX(30px);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            flex-direction: column;
            justify-content: center;
            pointer-events: none;
        }

        .screen-second.slide-in {
            opacity: 1;
            transform: translateX(0);
            pointer-events: auto;
        }

        .special-code {
            background: linear-gradient(135deg, #FFD700 0%, #FFA000 100%);
            color: var(--dark-color);
            padding: 16px;
            border-radius: 10px;
            font-size: 24px;
            font-weight: 700;
            text-align: center;
            margin: 16px 0;
            letter-spacing: 2px;
            position: relative;
            overflow: hidden;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .special-code:hover {
            transform: scale(1.02);
            box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
        }

        .code-hint {
            text-align: center;
            font-size: 13px;
            color: var(--muted-color);
            margin-bottom: 20px;
        }

        .close-btn {
            width: 100%;
            padding: 14px;
            border: none;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
            color: var(--white-color);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .close-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 87, 34, 0.3);
        }

        /* 成功提示 */
        .copy-success {
            position: fixed;
            top: 20px;
            right: 20px;
            background: var(--success-color);
            color: var(--white-color);
            padding: 12px 20px;
            border-radius: 8px;
            font-size: 14px;
            box-shadow: 0 4px 12px var(--shadow-hover);
            transform: translateX(100%);
            transition: transform 0.3s ease;
            z-index: 10001;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .copy-success.show {
            transform: translateX(0);
        }

        /* 响应式设计 */
        @media (max-width: 480px) {
            .seo-modal-main {
                max-width: 100%;
                margin: 10px;
            }
            
            .seo-modal-header {
                padding: 20px;
            }
            
            .seo-modal-title {
                font-size: 18px;
            }
            
            .seo-modal-body {
                padding: 20px;
            }
            
            .offer-title {
                font-size: 22px;
            }
            
            .contact-item {
                padding: 10px;
            }
            
            .contact-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            
            .contact-value {
                font-size: 14px;
            }
            
            .special-code {
                font-size: 20px;
                padding: 14px;
            }
        }

        /* 防止页面滚动 */
        body.no-scroll {
            overflow: hidden;
            touch-action: none;
            -webkit-overflow-scrolling: touch;
        }