/* 内容页（使用指南、常见问题、价格说明等）：与首页同一套页头、页脚、配色和晨雾背景，正文单栏阅读。 */
.doc main, .doc .footer { position: relative; z-index: 1; }
.doc-main { width: min(1100px, 100% - 40px); margin: 0 auto; padding: calc(var(--nav) + 36px) 0 80px; display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 56px; align-items: start; }
.crumbs { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--muted); }
.crumbs a { color: var(--cyan-d); text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }
.doc-article { min-width: 0; max-width: 760px; }
.doc .doc-article h1 { margin: 12px 0 18px; font: 900 clamp(32px, 4vw, 50px)/1.2 var(--cn); }
.doc-lead { font-size: 18px; color: var(--soft); padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.doc-article section { padding: 28px 0 6px; }
.doc-article section + section { border-top: 1px dashed var(--line); }
.doc .doc-article h2 { position: relative; margin-bottom: 14px; padding-left: 22px; font: 800 22px/1.4 var(--cn); }
.doc-article h2::before { content: ""; position: absolute; left: 2px; top: .55em; width: 9px; height: 9px; transform: rotate(45deg); background: var(--grad); }
.doc-article p, .doc-article li, .doc-article dd { color: var(--soft); font-size: 16px; line-height: 1.8; }
.doc-article p + p { margin-top: 10px; }
.doc-article a { color: var(--cyan-d); text-underline-offset: 3px; }
.doc-article ol, .doc-article ul { display: flex; flex-direction: column; gap: 8px; padding-left: 1.4em; }
.doc-article ol { list-style: decimal; }
.doc-article ul { list-style: none; padding-left: 0; }
.doc-article ul li { position: relative; padding-left: 20px; }
.doc-article ul li::before { content: ""; position: absolute; left: 3px; top: .72em; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); }
.doc-article strong { color: var(--text); }
.doc-article dl { display: grid; grid-template-columns: 9em minmax(0, 1fr); gap: 10px 18px; padding: 18px 20px; background: rgba(255, 255, 255, .7); border: 1px solid var(--line); border-radius: 12px; }
.doc-article dt { font-weight: 700; color: var(--text); }
.doc-article dd { margin: 0; }
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: rgba(255, 255, 255, .8); }
.doc-article table { width: 100%; border-collapse: collapse; font-size: 15px; }
.doc-article caption { caption-side: bottom; padding: 10px 14px; font-size: 13px; color: var(--muted); text-align: left; }
.doc-article th, .doc-article td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc-article th { font-weight: 700; color: var(--text); background: rgba(0, 146, 188, .06); }
.doc-article tbody tr:last-child td { border-bottom: 0; }
.doc-cta { margin-top: 32px; }
.doc-cta .btn { color: #fff; text-decoration: none; }
.doc-more { position: sticky; top: calc(var(--nav) + 24px); display: flex; flex-direction: column; gap: 12px; }
.doc .doc-more h2 { font: 700 13px/1 var(--mono); letter-spacing: .16em; color: var(--cyan-d); }
.doc-cards { display: flex; flex-direction: column; gap: 10px; }
.doc-card { display: flex; flex-direction: column; gap: 4px; padding: 14px 16px; background: rgba(255, 255, 255, .78); border: 1px solid var(--line); border-radius: 12px; text-decoration: none; transition: border-color .2s, transform .2s; }
.doc-card:hover { border-color: var(--cyan); transform: translateY(-2px); }
.doc-card small { font-size: 12px; color: var(--muted); }
.doc-card b { font: 700 15px/1.4 var(--cn); color: var(--text); }
@media (max-width: 900px) {
  .doc-main { grid-template-columns: 1fr; gap: 36px; }
  .doc-more { position: static; }
  .doc-article dl { grid-template-columns: 1fr; }
}
.doc-article ul + p, .doc-article ol + p, .doc-article p + ul, .doc-article p + ol { margin-top: 12px; }
.doc-article table { min-width: 560px; }
.doc-article td:nth-child(2) { white-space: nowrap; }
.doc-article code { font: 500 13px/1.6 var(--mono); padding: 2px 6px; border-radius: 6px; background: rgba(22, 28, 36, .06); word-break: break-all; }
.doc-shot { margin: 12px 0 6px; }
.doc-shot img { display: block; max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 18px 36px -26px rgba(22, 28, 36, .5); }
.doc-article .dl-btn { color: #fff; text-decoration: none; }