/* --- 字体引入 --- */
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400&family=Poppins:wght@500;600&display=swap');

/* --- 1. 全局变量 --- */
:root {
    --hz-orange: #ec682e;       /* 赫兹橙 */
    --hz-orange-dark: #d3541c;  /* 深橙 Hover */
    --text-main: #0F172A;       /* 品牌深蓝 (标题色) */
    --text-sub: #334155;        /* 品牌灰 (正文色) */
    --bg-white: #ffffff;        /* 纯白背景 */
    --bg-card: #F8FAFC;         /* 卡片极淡灰背景 */
}

.hz-hub-wrapper {
    font-family: 'Open Sans', sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--bg-white);
    max-width: 100%;
    margin: 0 auto;
}

/* --- 2. Hero Section --- */
.hz-hub-hero {
    padding: 100px 20px 60px 20px;
    text-align: center;
    background: #fff;
}

.hz-hub-tag {
    color: var(--hz-orange);
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 14px;
    margin-bottom: 20px;
    display: block;
}

.hz-hub-title {
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--text-main);
}

.hz-hub-desc {
    font-family: 'Open Sans', sans-serif;
    font-weight: 400;
    font-size: 18px;
    color: var(--text-sub);
    max-width: 800px;
    margin: 0 auto;
}

/* --- 3. Split Gateway --- */
.hz-gateway-section {
    padding: 60px 20px 80px 20px;
}

.hz-gateway-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.hz-gateway-card {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #E2E8F0;
    border-top: 4px solid var(--hz-orange);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    text-decoration: none !important;
    color: inherit;
}

.hz-gateway-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.hz-gateway-card * { text-decoration: none !important; }

.hz-gateway-img {
    height: 350px;
    background: #f1f5f9;
    overflow: hidden;
}
.hz-gateway-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.hz-gateway-card:hover .hz-gateway-img img { transform: scale(1.05); }

.hz-gateway-body {
    padding: 40px;
    text-align: center;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hz-gateway-title {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 32px;
    margin-bottom: 15px;
}

.hz-gateway-text {
    font-size: 16px;
    color: var(--text-sub);
    margin-bottom: 30px;
}

.hz-btn-style {
    display: inline-block;
    padding: 12px 35px;
    background-color: var(--hz-orange);
    color: #fff !important;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.hz-gateway-card:hover .hz-btn-style {
    background-color: var(--hz-orange-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(236, 104, 46, 0.3);
}

/* --- 4. Common Features (对齐升级版) --- */
.hz-common-section {
    background-color: #F1F5F9; /* 稍微加深一点背景，突出白卡片 */
    padding: 100px 20px;
    text-align: center;
}

.hz-common-title {
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 32px;
    margin-bottom: 50px;
    color: var(--text-main);
}

.hz-common-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

.hz-feat-item {
    background: #fff;
    padding: 40px 30px;
    border-radius: 12px;
    border: 1px solid #E2E8F0;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

/* 特性卡片的悬停效果：橙色边框激活 */
.hz-feat-item:hover {
    transform: translateY(-5px);
    border-color: var(--hz-orange);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.hz-feat-icon { 
    color: var(--hz-orange); 
    background: #FFF7ED; /* 极淡橙背景 */
    width: 64px; height: 64px; 
    border-radius: 12px; /* 方圆图标背景 */
    margin-bottom: 25px; 
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
}

.hz-feat-item:hover .hz-feat-icon {
    background: var(--hz-orange);
    color: #fff;
}

.hz-feat-item h3 { 
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 20px; 
    margin-bottom: 15px; 
    color: var(--text-main);
}

.hz-feat-item p { 
    font-family: 'Open Sans', sans-serif;
    font-weight: 400;
    font-size: 15px; 
    color: var(--text-sub); 
    line-height: 1.6;
}

/* --- 响应式 --- */
@media screen and (max-width: 992px) {
    .hz-common-grid { grid-template-columns: 1fr; }
    .hz-gateway-grid { grid-template-columns: 1fr; }
}