/* --- H-LIFT INDUSTRIAL THEME VARIABLES --- */
    :root {
        --primary-color: #003366; /* Deep Navy Blue */
        --accent-color: #e67e23;  /* Safety Orange */
        --bg-light: #f4f7f6;
        --border-color: #e0e0e0;
        --text-dark: #333333;
        --text-light: #555555;
        --warning-bg: #ffebee;
        --warning-border: #ef9a9a;
        --warning-text: #c62828;
    }

    /* Global Styles */
    * { box-sizing: border-box; }
    body {
        font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        color: var(--text-dark);
        line-height: 1.6;
        margin: 0;
        padding: 20px;
        background-color: #ffffff;
        font-size: 16px;
    }
    .container { max-width: 1200px; margin: 0 auto; }

    /* Header Section */
    .page-header {
        border-bottom: 4px solid var(--primary-color);
        padding-bottom: 20px;
        margin-bottom: 40px;
        text-align: center;
    }
    .page-header h1 {
        color: var(--primary-color);
        font-size: 32px;
        margin: 0 0 10px 0;
        font-family: 'Cambria', serif;
    }
    .sub-header {
        color: var(--text-light);
        font-weight: 600;
        font-size: 18px;
    }

    /* Content Blocks */
    .intro-box {
        background-color: var(--bg-light);
        padding: 20px;
        border-left: 5px solid var(--accent-color);
        margin-bottom: 40px;
        border-radius: 4px;
    }

    .feature-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
        margin-bottom: 40px;
    }
    .feature-card {
        border: 1px solid var(--border-color);
        border-radius: 6px;
        padding: 20px;
        background: #fff;
        transition: transform 0.2s;
    }
    .feature-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    }
    .feature-title {
        font-weight: bold;
        color: var(--primary-color);
        font-size: 18px;
        margin-bottom: 10px;
        display: block;
        border-bottom: 2px solid #eee;
        padding-bottom: 5px;
    }

    /* --- FIXED TABLE STYLES --- */
    .table-container {
        width: 100%;
        overflow-x: auto; /* 允许横向滚动 */
        -webkit-overflow-scrolling: touch;
        margin-bottom: 40px;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    }
    
    table {
        width: 100%;
        border-collapse: collapse;
        min-width: 1400px; /* 保持足够的总宽度 */
        table-layout: fixed; 
        background: #fff;
    }

    /* Header Cells (表头) */
    th {
        background-color: var(--primary-color);
        color: #fff;
        padding: 10px 4px; 
        border: 1px solid #ddd;
        font-size: 14px; 
        font-weight: 600;
        
        /* 强制居中 */
        text-align: center !important;
        vertical-align: middle !important;
        
        /* 高度与换行控制 */
        height: auto !important; 
        white-space: normal !important; /* 强制允许换行 */
        line-height: 1.4; /* 增加行距，防止重叠 */
        
        /* 单词换行控制 */
        word-wrap: break-word;
        word-break: break-word;
        overflow-wrap: break-word;
    }

    /* Data Cells (数据行) */
    td {
        padding: 10px 8px;
        border: 1px solid #ddd;
        font-size: 14px;
        color: #333;
        text-align: center !important;
        vertical-align: middle !important;
        height: auto !important;
        white-space: nowrap; 
        overflow: hidden;
        text-overflow: ellipsis;
    }

    tr:nth-child(even) { background-color: #f9f9f9; }
    
    /* --- 针对手机端的特殊优化 (关键修复) --- */
    @media (max-width: 768px) {
        th {
            font-size: 12px; /* 手机上字体改小 */
            padding: 8px 2px; /* 减少左右内边距 */
            line-height: 1.5; /* 手机上行距再大一点，确保不重叠 */
        }
        /* 确保表头容器高度能自适应撑开 */
        table thead tr {
            height: auto !important;
        }
    }

    /* Scroll hint */
    .scroll-hint {
        display: none;
        font-size: 12px;
        color: #666;
        text-align: center;
        margin-bottom: 5px;
        font-style: italic;
    }
    @media (max-width: 768px) {
        .scroll-hint { display: block; }
    }

    /* Q&A Section */
    .qa-box {
        background-color: #e3f2fd;
        border: 1px solid #90caf9;
        padding: 25px;
        border-radius: 6px;
        margin-bottom: 40px;
    }

    /* Safety Box */
    .warning-box {
        background-color: var(--warning-bg);
        border: 1px solid var(--warning-border);
        padding: 25px;
        margin-bottom: 40px;
        border-radius: 6px;
        color: var(--warning-text);
    }
    .warning-header {
        font-size: 20px;
        font-weight: bold;
        margin-bottom: 10px;
        display: block;
    }
    
    .product-img {
        display: block;
        margin: 20px auto;
        max-width: 100%;
        height: auto;
        border: 1px solid #eee;
        padding: 5px;
    }