.content-section{max-width:900px;margin:30px auto;padding:0 20px 40px}
.content-section h2{font-size:1.4rem;margin-top:28px;margin-bottom:10px;border-left:4px solid #007bff;padding-left:12px}
.content-section h3{font-size:1.1rem;margin-top:18px;margin-bottom:6px}
.content-section p{line-height:1.75;margin-bottom:12px}
.content-section ul{line-height:1.85;padding-left:20px}
.content-section a{color:#007bff;text-decoration:none}
.content-section a:hover{text-decoration:underline}
.dark .content-section h2{color:#e0e0e0;border-left-color:#4da3ff}
.dark .content-section h3{color:#cccccc}
.dark .content-section p,.dark .content-section ul{color:#bbbbbb}