body{font-family:Helvetica,Arial,sans-serif;line-height:1.7;color:#222;margin:0;padding:0;background:#fff}
    .container{max-width:960px;margin:32px auto;padding:20px}
    header{border-bottom:1px solid #eee;margin-bottom:20px;padding-bottom:10px}
    h1{font-size:28px;margin:0 0 6px}
    .subtitle{color:#555;font-size:15px}
    nav.toc{background:#f9f9f9;padding:14px;border-radius:8px;margin:24px 0}
    nav.toc a{display:block;color:#0066cc;text-decoration:none;padding:4px 0}
    nav.toc a:hover{text-decoration:underline}
    section{margin-bottom:32px}
    img.responsive{max-width:100%;height:auto;border-radius:6px;box-shadow:0 6px 18px rgba(0,0,0,0.06)}
    footer{border-top:1px solid #eee;padding-top:10px;color:#666;font-size:13px}
    .anchor-link{color:#0b63c4;text-decoration:none}
    .kw{background:#eef6ff;border-radius:4px;padding:2px 6px;margin-right:4px;font-size:12px}