/* 한결 사용설명서 전자책: 홈페이지 색을 그대로 쓰고, 왼쪽 목차 + 본문 한 단. */
.book-in { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 48px; padding-block: 40px 80px; }
.toc { position: sticky; top: 84px; align-self: start; max-height: calc(100vh - 100px); overflow: auto; }
.toc-h { font-size: 13px; color: var(--sub); margin: 0 0 8px; }
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc a { display: flex; gap: 10px; padding: 6px 10px; border-radius: 8px; color: var(--sub); text-decoration: none; font-size: 14.5px; }
.toc a:hover { color: var(--ink); }
.toc a[aria-current="true"] { background: var(--surface); color: var(--ink); font-weight: 500; box-shadow: inset 2px 0 0 var(--brand); }
.no { font-variant-numeric: tabular-nums; color: var(--brand); min-width: 1.4em; }
.book main { min-width: 0; max-width: 760px; }
.cover { padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.cover h1 { font-size: clamp(32px, 4vw, 44px); letter-spacing: -.02em; }
.dl-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.dl-row .btn { min-height: 44px; }
.chap { padding-block: 36px 8px; border-bottom: 1px solid var(--line); scroll-margin-top: 76px; }
.chap h2 { font-size: 26px; display: flex; gap: 12px; align-items: baseline; }
.chap h3 { font-size: 17px; margin-top: 22px; }
.chap ol.steps { padding-left: 1.4em; }
.chap ol.steps li, .chap ul li { margin: 6px 0; }
.tip { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--mint); border-radius: 8px; padding: 12px 16px; color: var(--sub); }
.chap figure { margin: 22px 0; }
.chap figure img { border-radius: 10px; border: 1px solid var(--line); }
.chap figcaption { font-size: 14px; color: var(--sub); margin-top: 8px; }
.pager { display: flex; justify-content: space-between; gap: 12px; padding-top: 28px; }
.pager a { text-decoration: none; }
@media (max-width: 860px) {
  .book-in { grid-template-columns: minmax(0, 1fr); gap: 20px; padding-block: 24px 64px; }
  .toc { position: static; max-height: none; border: 1px solid var(--line); border-radius: 12px; padding: 12px; background: var(--surface); }
}
@media print {
  .bar, .toc, .pager, .dl-row { display: none !important; }
  body { background: #fff; color: #172033; font-size: 11pt; }
  .book-in { display: block; padding: 0; }
  .book main { max-width: none; }
  .chap { break-before: page; border: 0; padding-top: 0; }
  .chap figure { break-inside: avoid; }
  .cover { border: 0; padding-top: 80mm; }
}