body{
    margin:0;
    font-family:Arial,Segoe UI,sans-serif;
    background:#f8fafc;
    color:#111827;
    line-height:1.7;
}

a{
    color:#0f766e;
    text-decoration:none;
}

a:hover{
    text-decoration:underline;
}

.container{
    max-width:1120px;
    margin:auto;
    padding:0 20px;
}

.header{
    background:#0f172a;
    color:white;
    padding:18px 0;
}

.logo{
    font-size:24px;
    font-weight:bold;
    color:white;
}

.logo:hover{
    text-decoration:none;
}

.nav{
    margin-top:8px;
}

.nav a{
    color:#dbeafe;
    margin-right:16px;
    font-size:14px;
}

.main{
    display:grid;
    grid-template-columns:minmax(0,1fr) 280px;
    gap:28px;
    margin:32px auto;
}

.article,
.sidebar{
    background:white;
    border:1px solid #e5e7eb;
    border-radius:16px;
    padding:26px;
    box-shadow:0 8px 24px rgba(15,23,42,.05);
}

h1{
    font-size:34px;
    line-height:1.25;
    margin:0 0 12px;
}

h2{
    font-size:26px;
    margin-top:28px;
}

h3{
    font-size:20px;
    margin-top:22px;
}

.meta{
    color:#6b7280;
    font-size:14px;
    margin-bottom:24px;
}

.article-body h2,
.article-body h3{
    line-height:1.35;
}

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

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

.article-body th,
.article-body td{
    border:1px solid #e5e7eb;
    padding:10px;
    text-align:left;
}

.article-body blockquote{
    border-left:4px solid #0f766e;
    padding-left:16px;
    color:#374151;
    background:#f9fafb;
    margin:20px 0;
}

.latest-posts{
    margin-top:20px;
}

.latest-post{
    border:1px solid #e5e7eb;
    border-radius:14px;
    padding:18px;
    margin:18px 0;
    background:#ffffff;
}

.latest-post h3{
    margin-top:0;
}

.latest-post-category{
    margin:6px 0;
    color:#64748b;
    font-size:14px;
}

.latest-post-description{
    margin-bottom:0;
}

.footer{
    border-top:1px solid #e5e7eb;
    color:#6b7280;
    font-size:14px;
    padding:24px 0;
    margin-top:30px;
}

@media(max-width:900px){
    .main{
        grid-template-columns:1fr;
    }

    h1{
        font-size:28px;
    }

    .article,
    .sidebar{
        padding:20px;
    }
}