/* =========================================
       GLOBAL & VARIABLES
       ========================================= */
    :root {
        --hz-navy: #0F172A;      
        --hz-text: #334155;      
        --hz-orange: #ec682e; 
        --hz-bg-white: #FFFFFF;
    }
    
    body { 
        margin: 0; 
        font-family: 'Open Sans', sans-serif;
        font-weight: 400;
        background-color: var(--hz-bg-white); 
        color: var(--hz-text); 
        overflow-x: hidden; 
    }
    
    h2, p { margin: 0; }

    /* =========================================
       INTERACTIVE SECTION (FULL WIDTH)
       ========================================= */
    .hz-demo-section {
        position: relative;
        width: 100%; 
        height: 90vh; 
        min-height: 800px;
        overflow: hidden;
        background: #000;
        cursor: none; 
    }

    /* 1. 背景层 */
    .hz-bg-layer {
        position: absolute;
        top: 0; left: 0;
        width: 100%; height: 100%;
        background-image: url('https://upbh596.myueeshop.com/u_file/2602/04/photo/5.png');
        background-size: cover;
        background-position: center;
        filter: brightness(0.85);
    }

    /* 2. 蒙版 */
    .hz-gradient-mask {
        position: absolute;
        left: 0;
        width: 100%;
        height: 300px;
        z-index: 5;
        pointer-events: none;
    }
    .mask-top {
        top: 0;
        background: linear-gradient(to bottom, #fff 0%, rgba(255,255,255,0) 100%);
    }
    .mask-bottom {
        bottom: 0;
        height: 150px;
        background: linear-gradient(to top, #fff 0%, rgba(255,255,255,0) 100%);
    }

    /* --- 标题区域 --- */
    .hz-demo-header {
        position: absolute;
        top: 100px; 
        left: 50%;
        transform: translateX(-50%);
        text-align: center;
        z-index: 50;
        pointer-events: none;
        width: 90%;
    }

    .hz-demo-title {
        font-family: 'Poppins', sans-serif;
        font-weight: 500; 
        font-size: 48px;  
        color: var(--hz-navy);
        margin-bottom: 12px;
        text-transform: uppercase; 
        letter-spacing: 1px;
        text-shadow: 0 10px 30px rgba(255,255,255,0.8);
    }

    .hz-demo-subtitle {
        font-family: 'Poppins', sans-serif; 
        font-weight: 600; 
        font-size: 20px;  
        color: var(--hz-text);
        background: rgba(255,255,255,0.85);
        padding: 8px 30px;
        border-radius: 50px;
        backdrop-filter: blur(10px);
        display: inline-block;
        box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    }

    /* 3. 设备容器 */
    .hz-device-wrapper {
        position: absolute;
        top: 0; left: 0;
        width: 760px;  
        height: 1360px; 
        z-index: 20;
        touch-action: none;
        pointer-events: none; 
        will-change: transform;
        transition: transform 0.08s cubic-bezier(0.25, 0.46, 0.45, 0.94); 
    }

    /* 设备外框 */
    .hz-frame-img {
        position: absolute;
        top: 0; left: 0;
        width: 100%; height: 100%;
        object-fit: contain;
        z-index: 30;
        filter: drop-shadow(0 40px 80px rgba(0, 0, 0, 0.5)); 
    }

    /* 屏幕透视区域 */
    .hz-magic-screen {
        position: absolute;
        z-index: 10;
        background: #000;
        overflow: hidden;
        border-radius: 2px;
        top: 35%;      
        left: 33%;     
        width: 33%;    
        height: 10%;   
        box-shadow: inset 0 0 20px rgba(0,0,0,0.8);
    }

    /* 透视背景 */
    .hz-magic-bg {
        position: absolute;
        top: 0; left: 0;
        background-image: url('https://upbh596.myueeshop.com/u_file/2602/04/photo/20260204-105429.jpg');
        background-size: cover;
        background-position: center;
    }

    /* UI 覆盖层 */
    .hz-ui-layer {
        position: absolute;
        top: 0; left: 0; width: 100%; height: 100%; 
        z-index: 20; 
        background: rgba(236, 104, 46, 0.05); 
        box-shadow: inset 0 0 40px rgba(236, 104, 46, 0.2); 
        pointer-events: none;
    }
    
    /* 扫描线动画 */
    .hz-scan-line {
        position: absolute;
        top: 0; left: 0; width: 100%; height: 3px;
        background: linear-gradient(to right, transparent, var(--hz-orange), transparent);
        z-index: 25;
        opacity: 0.8;
        box-shadow: 0 0 10px var(--hz-orange);
        animation: scanMove 2.5s ease-in-out infinite;
    }
    @keyframes scanMove {
        0% { top: 0%; opacity: 0; }
        10% { opacity: 1; }
        90% { opacity: 1; }
        100% { top: 100%; opacity: 0; }
    }

    /* 底部提示条 */
    .instruction {
        position: absolute; bottom: 80px; 
        color: var(--hz-orange); 
        background: rgba(15, 23, 42, 0.9); 
        padding: 12px 28px; 
        border-radius: 50px; 
        font-family: 'Poppins', sans-serif;
        font-size: 14px; 
        font-weight: 500;
        letter-spacing: 2px;
        z-index: 100;
        left: 50%; transform: translateX(-50%);
        white-space: nowrap;
        pointer-events: none;
        box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        backdrop-filter: blur(10px);
        display: flex; align-items: center; gap: 12px;
        border: 1px solid rgba(236, 104, 46, 0.3);
    }
    .instruction::before {
        content: ''; display: block; width: 8px; height: 8px; 
        background: var(--hz-orange); border-radius: 50%;
        box-shadow: 0 0 10px var(--hz-orange);
        animation: pulseDot 2s infinite;
    }
    @keyframes pulseDot { 
        0% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 rgba(236, 104, 46, 0.7); }
        70% { opacity: 0.7; transform: scale(1.1); box-shadow: 0 0 0 10px rgba(236, 104, 46, 0); }
        100% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 rgba(236, 104, 46, 0); }
    }

    /* =========================================
       MOBILE RESPONSIVENESS
       ========================================= */
    @media (max-width: 768px) {
        .hz-demo-section {
            min-height: 600px;
            height: 80vh;
        }

        .hz-demo-header {
            top: 60px;
        }

        .hz-demo-title {
            font-size: 32px; /* 移动端字号规范: H1 */
            line-height: 1.2;
        }

        .hz-demo-subtitle {
            font-size: 14px; /* 移动端字号规范: Body 2 */
            padding: 6px 20px;
        }

        .hz-device-wrapper {
            width: 380px;  /* 缩小设备图形尺寸 */
            height: 680px; 
        }

        .instruction {
            font-size: 12px;
            padding: 10px 20px;
            bottom: 40px;
        }
    }