/* VPNEQ — deepdoc（新手到进阶）页面层：手册章节节奏、文档头部、正文排版微调 */

.doc-head{max-width:860px}
.doc-head h1{font-weight:900;font-size:clamp(30px,4.6vw,52px);letter-spacing:-.03em;line-height:1.12;margin-top:14px}
.doc-head .lead{margin-top:18px}
.doc-meta{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:24px;font-family:var(--font-mono);font-size:12px;color:var(--text-muted)}
.doc-meta b{color:var(--text);font-weight:600}
.doc-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:26px}
.doc-actions .btn{flex-shrink:0;white-space:nowrap}

.doc-sec{padding-top:56px}
.doc-sec + .doc-sec{margin-top:56px;border-top:1px solid var(--border-soft)}
.doc-sec h2{font-size:clamp(23px,2.8vw,32px);font-weight:900;letter-spacing:-.025em;margin-top:10px}
.doc-sec h3{font-size:17.5px;font-weight:800;margin-top:28px}
.doc-sec p{margin-top:12px;font-size:16px;line-height:1.75}
.doc-sec ul,.doc-sec ol{margin-top:12px;padding-left:1.3em}
.doc-sec li{font-size:15.5px;line-height:1.7;margin-bottom:8px;color:var(--text)}
.doc-sec ul li{list-style:disc}
.doc-sec ol li{list-style:decimal}
.doc-sec .table-scroll{margin-top:18px}
.doc-sec .callout{margin-top:18px}
.doc-sec pre{margin-top:18px}
.doc-sec .caption{margin-top:14px}
.doc-note{margin-top:14px;font-size:13px;color:var(--text-muted)}

@media (max-width:640px){
  .doc-sec{padding-top:40px}
  .doc-sec + .doc-sec{margin-top:40px}
  .doc-sec p{font-size:15.5px}
  .doc-sec h3{margin-top:22px}
}