/* 烟斗知识库：编辑型阅读布局。公共响应式容器由 common.css 提供。 */
.knowledgeLibraryPage {
    --kb-ink: #342a24;
    --kb-muted: #74685f;
    --kb-line: #ded5cc;
    --kb-paper: #fffdf9;
    --kb-soft: #f6f0e9;
    --kb-accent: #694a34;
    --kb-accent-hover: #513724;
    --kb-focus: rgba(105,74,52,.24);
    color: var(--kb-ink);
    background: #fff;
    padding-bottom: 72px;
}
.knowledgeLibraryPage *,
.knowledgeLibraryPage *::before,
.knowledgeLibraryPage *::after { box-sizing: border-box; }
.knowledgeLibraryPage a { color: var(--kb-accent); text-decoration: none; }
.knowledgeLibraryPage a:hover { color: var(--kb-accent-hover); }
.knowledgeLibraryPage h1,.knowledgeLibraryPage h2,.knowledgeLibraryPage h3,.knowledgeLibraryPage p { margin: 0; }
.kbIntro { display: grid; grid-template-columns: minmax(0,1fr) 280px; gap: 56px; align-items: end; border-bottom: 1px solid var(--kb-line); padding: 58px 0 42px; }
.kbEyebrow,.kbSectionEyebrow { color: #927158; font-size: 11px; font-weight: 600; letter-spacing: 1.5px; }
.kbIntro h1 { max-width: 760px; font-size: clamp(34px,4.2vw,54px); font-weight: 500; letter-spacing: -.035em; line-height: 1.12; margin: 14px 0 18px; text-wrap: balance; }
.kbIntro p { max-width: 720px; color: var(--kb-muted); font-size: 15px; line-height: 1.9; }
.kbIntroAside { border-left: 1px solid #cdbdad; padding-left: 24px; }
.kbIntroAside strong { display: block; color: var(--kb-accent); font-size: 40px; font-weight: 500; font-variant-numeric: tabular-nums; line-height: 1.15; }
.kbIntroAside span { display: block; color: var(--kb-muted); font-size: 12px; line-height: 1.7; margin-top: 4px; }
.kbSearch { display: flex; gap: 10px; margin-top: 28px; }
.kbSearch input { flex: 1 1 auto; min-width: 0; min-height: 46px; border: 1px solid #cabeb2; border-radius: 2px; background: #fff; color: var(--kb-ink); font: inherit; font-size: 14px; line-height: 1.4; padding: 11px 14px; transition: border-color .2s ease,box-shadow .2s ease; }
.kbSearch input::placeholder { color: #94877d; opacity: 1; }
.knowledgeLibraryPage .kbSearch button,
.knowledgeLibraryPage .kbPrimaryButton { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; border: 1px solid var(--kb-accent); border-radius: 2px; background: var(--kb-accent); color: #fff; cursor: pointer; font: inherit; font-size: 13px; font-weight: 600; line-height: 1.25; padding: 11px 18px; text-decoration: none; white-space: nowrap; transition: background-color .2s ease,border-color .2s ease,color .2s ease,transform .2s ease; }
.knowledgeLibraryPage .kbSearch button:hover,
.knowledgeLibraryPage .kbPrimaryButton:hover { border-color: var(--kb-accent-hover); background: var(--kb-accent-hover); color: #fff; transform: translateY(-1px); }
.knowledgeLibraryPage .kbSearch button:active,
.knowledgeLibraryPage .kbPrimaryButton:active { transform: translateY(0); }
.kbSearch input:focus,
.kbSearch button:focus,
.kbPrimaryButton:focus { outline: 3px solid var(--kb-focus); outline-offset: 2px; }
.kbSearch input:focus { border-color: var(--kb-accent); box-shadow: 0 0 0 1px var(--kb-accent); }
.kbSearch input:focus:not(:focus-visible),
.kbSearch button:focus:not(:focus-visible),
.kbPrimaryButton:focus:not(:focus-visible) { outline: none; }
.kbSearch input:focus-visible,
.kbSearch button:focus-visible,
.kbPrimaryButton:focus-visible { outline: 3px solid var(--kb-focus); outline-offset: 2px; }
.kbSection { margin-top: 54px; }
.kbSectionHead { border-bottom: 1px solid var(--kb-line); padding-bottom: 18px; margin-bottom: 22px; }
.kbSectionHead h2 { font-size: 28px; font-weight: 500; line-height: 1.35; margin-top: 8px; text-wrap: balance; }
.kbSectionHead p { color: var(--kb-muted); font-size: 13px; line-height: 1.75; margin-top: 8px; }
.kbSectionHeadAction { display: flex; gap: 24px; align-items: end; justify-content: space-between; }
.kbSectionHeadAction > a { flex: 0 0 auto; border-bottom: 1px solid #bda994; color: var(--kb-accent); font-size: 12px; line-height: 1.6; padding-bottom: 2px; }
.kbSectionHeadAction > a:hover { border-bottom-color: var(--kb-accent-hover); }
.kbLevelGrid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 1px; border: 1px solid var(--kb-line); background: var(--kb-line); }
.kbLevelCard { min-width: 0; background: var(--kb-paper); padding: 22px; text-decoration: none; transition: background-color .2s ease,box-shadow .2s ease; }
.kbLevelCard:hover { background: var(--kb-soft); box-shadow: inset 0 -2px 0 #bda994; }
.kbLevelCard:focus-visible,.kbCategoryCard:focus-visible,.kbHomeArticleItem:focus-visible,.kbArticleListItem:focus-visible,.kbSectionHeadAction > a:focus-visible,.kbFilterBar a:focus-visible,.kbPagination a:focus-visible,.kbPath a:focus-visible { position: relative; z-index: 1; outline: 3px solid var(--kb-focus); outline-offset: 2px; }
.kbLevelCard strong { display: block; color: var(--kb-ink); font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.kbLevelCard p { color: var(--kb-muted); font-size: 12px; line-height: 1.7; }
.kbCategoryGrid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.kbCategoryCard { min-width: 0; border-top: 2px solid #bda994; background: var(--kb-soft); padding: 20px; text-decoration: none; transition: background-color .2s ease,transform .2s ease; }
.kbCategoryCard:hover { background: #eee5dc; transform: translateY(-2px); }
.kbCategoryCard h3 { color: var(--kb-ink); font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.kbCategoryCard p { min-height: 42px; color: var(--kb-muted); font-size: 12px; line-height: 1.65; }
.kbCategoryMeta { display: block; color: #927158; font-size: 11px; font-variant-numeric: tabular-nums; margin-top: 16px; }
.kbHomeArticleGrid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); border-top: 1px solid var(--kb-line); border-left: 1px solid var(--kb-line); }
.kbHomeArticleItem { display: flex; min-width: 0; min-height: 150px; flex-direction: column; border-right: 1px solid var(--kb-line); border-bottom: 1px solid var(--kb-line); background: #fff; padding: 20px 22px 18px; text-decoration: none; transition: background-color .2s ease,box-shadow .2s ease; }
.kbHomeArticleItem:hover { background: #fcf8f4; box-shadow: inset 3px 0 0 #bda994; }
.kbHomeArticleItem h3 { color: var(--kb-ink); font-size: 18px; font-weight: 600; line-height: 1.45; overflow-wrap: anywhere; }
.kbHomeArticleItem p { color: var(--kb-muted); display: -webkit-box; font-size: 12px; line-height: 1.7; margin-top: 8px; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.kbHomeArticleItem .kbArticleMeta { margin-top: auto; padding-top: 15px; }
.kbArticleList { border-top: 1px solid var(--kb-line); }
.kbArticleListItem { display: grid; grid-template-columns: minmax(0,1fr) auto; column-gap: 28px; min-width: 0; border-bottom: 1px solid var(--kb-line); background: #fff; padding: 17px 4px 16px; text-decoration: none; transition: background-color .2s ease,padding-left .2s ease,padding-right .2s ease; }
.kbArticleListItem:hover { background: #fcf8f4; padding-left: 12px; padding-right: 12px; }
.kbArticleListItem h3 { min-width: 0; color: var(--kb-ink); font-size: 17px; font-weight: 600; line-height: 1.45; overflow-wrap: anywhere; }
.kbArticleListItem p { grid-column: 1; color: var(--kb-muted); display: -webkit-box; max-width: 900px; font-size: 12px; line-height: 1.65; margin-top: 6px; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.kbArticleListItem .kbArticleMeta { grid-column: 2; grid-row: 1 / span 2; align-self: center; justify-content: flex-end; min-width: 170px; margin-top: 0; white-space: nowrap; }
.kbArticleMeta { display: flex; flex-wrap: wrap; gap: 8px 14px; color: #927158; font-size: 11px; margin-top: 13px; }
.kbEmpty { display: grid; min-height: 124px; place-items: center; border: 1px dashed #cdbdad; background: #fffaf5; box-shadow: inset 0 0 0 4px rgba(255,255,255,.48); color: var(--kb-muted); font-size: 13px; line-height: 1.8; margin: 0; padding: 30px; text-align: center; }
.kbPath { display: flex; flex-wrap: wrap; gap: 7px; align-items: center; color: #8b7f75; font-size: 12px; padding-top: 22px; }
.kbPath a { color: #73553e; }
.kbPath span[aria-current="page"] { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kbCategoryHero { border-bottom: 1px solid var(--kb-line); padding: 36px 0 30px; }
.kbCategoryHero h1 { font-size: clamp(30px,3.8vw,48px); font-weight: 500; letter-spacing: -.03em; line-height: 1.2; margin: 12px 0 10px; overflow-wrap: anywhere; text-wrap: balance; }
.kbCategoryHero p { max-width: 760px; color: var(--kb-muted); font-size: 14px; line-height: 1.85; }
.kbCategoryHero + .kbSearch { margin-top: 26px; }
.kbFilterBar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; border: 1px solid #e0d7ce; background: #faf6f1; margin: 24px 0 0; padding: 16px; }
.kbFilterBar select,.kbFilterBar a { display: inline-flex; min-width: 150px; min-height: 40px; align-items: center; border: 1px solid #d3c6ba; border-radius: 2px; background: #fff; color: #63564c; font: inherit; font-size: 12px; line-height: 1.3; padding: 9px 12px; text-decoration: none; transition: border-color .2s ease,background-color .2s ease,color .2s ease; }
.kbFilterBar select { cursor: pointer; }
.kbFilterBar select:focus { border-color: var(--kb-accent); outline: 3px solid var(--kb-focus); outline-offset: 2px; }
.kbFilterBar .kbPrimaryButton { min-height: 40px; padding-top: 9px; padding-bottom: 9px; }
.kbFilterBar a { min-width: 0; justify-content: center; }
.kbFilterBar a:hover { border-color: #b9a593; background: #fffaf5; color: var(--kb-accent-hover); }
.kbFilterBar a.is-active { border-color: var(--kb-accent); background: var(--kb-soft); color: var(--kb-accent); }
.knowledgeLibraryPage .kbResultsNote { display: flex; min-height: 50px; align-items: center; border-bottom: 1px solid #e8e0d8; color: var(--kb-muted); font-size: 12px; font-variant-numeric: tabular-nums; line-height: 1.6; margin: 0 0 18px; padding: 12px 2px 11px; }
.kbPagination { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 22px; }
.kbPagination a,.kbPagination span { display: inline-flex; min-width: 34px; min-height: 34px; align-items: center; justify-content: center; border: 1px solid #d3c6ba; color: var(--kb-accent); font-size: 12px; line-height: 1; padding: 7px 10px; text-decoration: none; }
.kbPagination a:hover { border-color: var(--kb-accent); background: var(--kb-soft); color: var(--kb-accent-hover); }
.kbPagination .current { background: var(--kb-accent); color: #fff; }
@media (max-width: 900px) {
    .kbIntro { grid-template-columns: 1fr; gap: 26px; }
    .kbIntroAside { border-left: 0; border-top: 1px solid var(--kb-line); padding: 18px 0 0; }
    .kbLevelGrid { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .kbCategoryGrid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 640px) {
    .knowledgeLibraryPage { padding-bottom: 44px; }
    .kbIntro { padding: 34px 0 28px; }
    .kbIntro h1 { font-size: clamp(32px,10vw,38px); }
    .kbSearch { display: grid; grid-template-columns: 1fr auto; }
    .kbSearch button { min-width: 96px; }
    .kbSection { margin-top: 42px; }
    .kbSectionHead h2 { font-size: 25px; }
    .kbLevelGrid,.kbCategoryGrid,.kbHomeArticleGrid { grid-template-columns: 1fr; }
    .kbCategoryCard p { min-height: 0; }
    .kbSectionHeadAction { align-items: start; }
    .kbHomeArticleItem { min-height: 0; padding: 17px 15px 15px; }
    .kbHomeArticleItem h3 { font-size: 16px; }
    .kbHomeArticleItem .kbArticleMeta { margin-top: 0; padding-top: 12px; }
    .kbArticleListItem { grid-template-columns: 1fr; padding: 15px 2px 14px; }
    .kbArticleListItem:hover { padding-left: 8px; padding-right: 8px; }
    .kbArticleListItem h3 { font-size: 16px; }
    .kbArticleListItem p { grid-column: 1; -webkit-line-clamp: 2; }
    .kbArticleListItem .kbArticleMeta { grid-column: 1; grid-row: auto; justify-content: flex-start; min-width: 0; margin-top: 9px; white-space: normal; }
    .kbPath { flex-wrap: nowrap; overflow: hidden; padding-top: 18px; }
    .kbPath a,.kbPath > span:not([aria-current="page"]) { flex: 0 0 auto; }
    .kbCategoryHero { padding: 30px 0 25px; }
    .kbFilterBar { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); margin-top: 20px; padding: 13px; }
    .kbFilterBar select,.kbFilterBar a,.kbFilterBar .kbPrimaryButton { width: 100%; min-width: 0; }
    .knowledgeLibraryPage .kbResultsNote { min-height: 46px; margin-bottom: 15px; }
    .kbEmpty { min-height: 116px; padding: 25px 20px; }
}
@media (max-width: 420px) {
    .kbSearch { grid-template-columns: 1fr; }
    .kbSearch button { width: 100%; }
    .kbSectionHeadAction { display: block; }
    .kbSectionHeadAction > a { display: inline-block; margin-top: 12px; }
    .kbArticleMeta { gap: 6px 10px; }
}
@media (prefers-reduced-motion: reduce) {
    .kbSearch input,.knowledgeLibraryPage .kbSearch button,.knowledgeLibraryPage .kbPrimaryButton,.kbLevelCard,.kbCategoryCard,.kbHomeArticleItem,.kbArticleListItem,.kbFilterBar select,.kbFilterBar a { transition: none; }
}