/* --- 1. 全局变量与基础设置 --- */
:root {
    --hz-orange: #ec682e;       /* 公司标准色 */
    --hz-orange-hover: #d3541c; /* 按钮悬停深橙色 */
    --text-dark: #333333;       /* 深色文字 */
    --text-gray: #666666;       /* 浅色说明文字 */
    --bg-white: #ffffff;
    --bg-light: #fdfdfd;        /* 极浅灰背景用于区分板块 */
    --shadow-card: 0 10px 30px rgba(0,0,0,0.05); /* 柔和阴影 */
}

.hz-fiber-wrapper {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-white);
    max-width: 100%;
    margin: 0 auto;
    box-sizing: border-box;
}

/* 通用按钮样式 */
.hz-btn {
    display: inline-block;
    padding: 10px 25px;
    background-color: var(--hz-orange);
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 1px solid var(--hz-orange);
}
.hz-btn:hover {
    background-color: var(--hz-orange-hover);
    border-color: var(--hz-orange-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(236, 104, 46, 0.3);
}
.hz-btn-outline {
    background-color: transparent;
    color: var(--hz-orange);
}
.hz-btn-outline:hover {
    background-color: var(--hz-orange);
    color: #fff;
}

/* --- 2. Hero Section (极简科技白) --- */
.hz-hero {
    padding: 100px 20px;
    text-align: center;
    background: radial-gradient(circle at top center, #fff5f0 0%, #ffffff 70%); /* 淡淡的橙色光晕 */
    position: relative;
    overflow: hidden;
}

.hz-hero-tag {
    color: var(--hz-orange);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 14px;
    margin-bottom: 20px;
    display: block;
}

.hz-hero-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-dark);
    line-height: 1.2;
}

.hz-hero-desc {
    font-size: 18px;
    color: var(--text-gray);
    max-width: 800px;
    margin: 0 auto 40px auto;
}

/* --- 3. Technology Intro (原理简介) --- */
.hz-tech-section {
    padding: 80px 20px;
    background-color: var(--bg-white);
}

.hz-tech-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    max-width: 1200px;
    margin: 0 auto;
}

.hz-tech-box {
    padding: 30px;
    border-radius: 12px;
    background: #fff;
    border: 1px solid #eee;
    transition: 0.3s;
}
.hz-tech-box:hover {
    border-color: var(--hz-orange);
    box-shadow: var(--shadow-card);
}

.hz-tech-icon {
    font-size: 40px;
    color: var(--hz-orange);
    margin-bottom: 20px;
    display: block;
}

.hz-tech-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
}

/* --- 4. Product Matrix (核心产品) --- */
.hz-product-section {
    padding: 80px 20px;
    background-color: #fafafa; /* 浅灰底突显卡片 */
}

.hz-section-head {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
}

.hz-prod-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.hz-prod-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #eee;
    display: flex;
    flex-direction: column;
}

.hz-prod-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.08);
    border-color: var(--hz-orange); /* 悬停橙色边框 */
}

.hz-card-img {
    height: 220px;
    background-color: #f0f0f0;
    position: relative;
    overflow: hidden;
}
.hz-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}
.hz-prod-card:hover .hz-card-img img { transform: scale(1.05); }

.hz-card-body { padding: 30px; flex: 1; display: flex; flex-direction: column; }

.hz-prod-cat {
    font-size: 12px;
    color: var(--hz-orange);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.hz-prod-title { font-size: 22px; font-weight: 700; margin: 0 0 15px 0; color: var(--text-dark); }
.hz-prod-desc { font-size: 14px; color: var(--text-gray); margin-bottom: 20px; flex: 1; }

.hz-specs-list {
    list-style: none;
    padding: 0;
    margin: 0 0 25px 0;
    border-top: 1px solid #f0f0f0;
    padding-top: 15px;
}
.hz-specs-list li {
    font-size: 13px;
    color: var(--text-dark);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
}
.hz-specs-list li::before {
    content: '•';
    color: var(--hz-orange);
    font-size: 20px;
    line-height: 0;
    margin-right: 10px;
}

/* --- 5. Application Tabs (应用场景) --- */
.hz-app-section {
    padding: 100px 20px;
    background-color: var(--bg-white);
}

.hz-app-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.hz-app-item {
    text-align: center;
}

.hz-app-icon-box {
    width: 80px;
    height: 80px;
    background: #fff5f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px auto;
    color: var(--hz-orange);
    font-size: 32px;
    transition: 0.3s;
}
.hz-app-item:hover .hz-app-icon-box {
    background: var(--hz-orange);
    color: #fff;
}

.hz-app-title { font-size: 20px; font-weight: 700; margin-bottom: 15px; }
.hz-app-text { font-size: 14px; color: var(--text-gray); }

/* --- 响应式适配 --- */
@media screen and (max-width: 768px) {
    .hz-hero-title { font-size: 32px; }
    .hz-tech-grid, .hz-prod-grid, .hz-app-grid { grid-template-columns: 1fr; }
    .hz-hero { padding: 60px 20px; }
    .hz-prod-card { max-width: 400px; margin: 0 auto; }
}