:root {
            --primary: #093862;
            --text: #222;
            --muted: #666;
            --bg: #fff;
            --border: #e5e7eb;
            --tip: #eef7ff;
            --warn: #fff7e6
        }

        main h2, h3, h4, h5, h6 {
            color: var(--primary);
        }


        * {
            box-sizing: border-box
        }

        body {
            margin: 0;
            font: 18px/1.8 system-ui, sans-serif;
            background: #f5f7fa;
            color: var(--text)
        }

        .blog-container {
            max-width: 900px;
            margin: auto;
            background: #fff;
            padding: 40px
        }

        .hero h1 {
            font-size: 2.5rem;
            line-height: 1.2;
            margin-bottom: .5rem;
            color: var(--primary);
        }

        .article-summary {
            font-size: 1.2rem;
            color: var(--muted)
        }

        .breadcrumb {
            font-size: .9rem;
            margin-bottom: 1rem
        }

        .breadcrumb a {
            text-decoration: none;
            color: var(--primary)
        }

        figure {
            margin: 2rem 0
        }

        img {
            max-width: 100%;
            height: auto;
            border-radius: 12px
        }

        .toc {
            background: #f8fafc;
            border: 1px solid var(--border);
            padding: 20px;
            border-radius: 10px
        }

        .toc a {
            text-decoration: none;
            color: var(--primary)
        }

        h2 {
            margin-top: 3rem;
            border-bottom: 2px solid var(--border);
            padding-bottom: .4rem
        }

        h3 {
            margin-top: 2rem
        }

        .tip,
        .warning {
            padding: 18px;
            border-radius: 10px;
            margin: 20px 0
        }

        .tip {
            background: var(--tip);
            border-left: 5px solid #4da3ff
        }

        .warning {
            background: var(--warn);
            border-left: 5px solid #f0ad4e
        }

        ul {
            padding-left: 24px
        }

        .blog-cta {
            margin: 40px 0;
            padding: 25px;
            background: #093862;
            color: #fff;
            border-radius: 12px;
            text-align: center
        }

        .blog-cta a {
            display: inline-block;
            margin-top: 10px;
            background: #fff;
            color: var(--primary);
            padding: 12px 18px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: bold
        }

        table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }

        th,
        td {
            border: 1px solid var(--border);
            padding: 12px 16px;
            text-align: left;
        }

        th {
            background: #f8fafc;
            font-weight: bold;
        }

        details {
            border: 1px solid var(--border);
            padding: 12px;
            border-radius: 8px;
            margin: 10px 0
        }

        summary {
            font-weight: bold;
            cursor: pointer
        }
/* 
        footer {
            text-align: center;
            margin-top: 50px;
            color: var(--muted)
        } */

        @media(max-width:768px) {
            .blog-container {
                padding: 20px
            }

            .hero h1 {
                font-size: 2rem
            }
        }