/* --- 变量定义 --- */
:root {
    --hz-blue-dark: #002B49;
    --hz-blue-main: #0056b3;
    --hz-blue-light: #e7f5ff;
    --hz-accent: #00b8d4;
    --text-main: #333;
    --text-light: #666;
    --bg-gray: #f4f6f9;

    /* 字体规范定义 */
    --font-title: 'Poppins', sans-serif;
    --font-subtitle: 'Poppins', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    --font-btn: 'Roboto', sans-serif;
}

.hz-monitor-wrapper {
    color: var(--text-main);
    line-height: 1.6;
    background-color: #fff;
    -webkit-font-smoothing: antialiased;
}

/* --- 1. Hero Banner --- */
.hz-hero-section {
    background: linear-gradient(rgba(0, 43, 73, 0.7), rgba(0, 26, 44, 0.7)), 
                url('//ueeshop.ly200-cdn.com/u_file/UPBH/UPBH596/2602/11/photo/50.png'); 
    background-size: cover;
    background-position: center;
    color: #fff;
    padding: 120px 20px;
    text-align: center;
    position: relative;
}

.hz-hero-title { 
    font-family: var(--font-title);
    font-weight: 500; 
    font-size: 48px; 
    margin-bottom: 20px; 
}

.hz-hero-subtitle { 
    font-family: var(--font-subtitle);
    font-weight: 600;
    font-size: 18px; 
    color: rgba(255,255,255,0.9); 
    max-width: 750px; 
    margin: 0 auto; 
}

/* --- 2. 产品双核布局 --- */
.hz-product-split {
    max-width: 1200px;
    margin: -60px auto 60px auto; 
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    position: relative;
    z-index: 10;
}

.hz-product-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    border-top: 5px solid transparent;
}

.hz-product-card:hover { transform: translateY(-10px); }
.card-overhead { border-top-color: var(--hz-blue-main); }
.card-underground { border-top-color: #ff9800; }

.hz-card-img {
    height: 300px;
    width: 100%;
    overflow: hidden;
    background: #000;
}

.hz-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.hz-product-card:hover .hz-card-img img { transform: scale(1.1); }

.hz-card-body { padding: 35px; }

.hz-card-tag { 
    font-family: var(--font-body);
    font-size: 12px; 
    font-weight: 400; 
    color: #999; 
    margin-bottom: 10px; 
    display: block; 
}

.hz-card-title { 
    font-family: var(--font-subtitle);
    font-weight: 600;
    font-size: 26px; 
    color: var(--hz-blue-dark); 
    margin: 0 0 15px 0; 
}

.hz-card-desc { 
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--text-light); 
    margin-bottom: 25px; 
    font-size: 15px; 
    min-height: 70px; 
}

.hz-specs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 30px; }
.hz-spec-item { 
    font-family: var(--font-subtitle);
    font-weight: 600;
    font-size: 14px; 
    display: flex; 
    align-items: center; 
}
.hz-spec-item::before { content: ''; width: 6px; height: 6px; background-color: var(--hz-accent); border-radius: 50%; margin-right: 8px; }

/* 按钮基础样式 */
.hz-btn-primary {
    font-family: var(--font-btn);
    font-weight: 700;
    display: block;
    width: 100%;
    padding: 14px 0;
    text-align: center;
    background-color: var(--hz-blue-main);
    color: #fff !important;
    text-decoration: none !important;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.hz-btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.hz-btn-primary:active {
    transform: translateY(1px);
}

.card-underground .hz-btn-primary { 
    background-color: #e65100; 
}

@media screen and (max-width: 900px) {
    .hz-hero-title { font-size: 32px; }
    .hz-product-split { grid-template-columns: 1fr; margin-top: -30px; }
}