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@media(max-width:1050px){.book-grid{grid-template-columns:repeat(3,1fr)}.category-grid{grid-template-columns:repeat(5,1fr)}.category-panel{width:560px;grid-template-columns:repeat(6,1fr)}.category-layout{grid-template-columns:1fr}.category-aside{display:grid;grid-template-columns:1fr 1fr;gap:18px}.category-aside .side-card{margin-top:0}.category-aside .side-card:last-child{grid-column:1/-1}}
@media(max-width:780px){.container,.reading-container,.header-inner{width:min(100% - 28px,1180px)}.header-inner{height:66px;gap:15px}.brand b{font-size:16px}.brand small{display:none}.brand-mark{width:36px;height:36px}.header-nav{display:none}.category-menu summary{padding:8px 10px}.category-panel{position:fixed;left:14px;right:14px;top:72px;width:auto;grid-template-columns:repeat(4,1fr);max-height:70vh;overflow:auto}.hero{padding:62px 0}.hero-grid{grid-template-columns:1fr;gap:42px}.hero-note{display:none}.hero h1{font-size:43px}.search-box{margin-top:28px}.category-section,.article-section,.search-results{padding-top:52px;padding-bottom:55px}.section-heading{align-items:flex-start;gap:12px}.section-heading h2{font-size:25px}.section-heading>span{font-size:11px;text-align:right}.category-grid{grid-template-columns:repeat(3,1fr)}.book-grid{grid-template-columns:repeat(2,1fr)}.article-list article{grid-template-columns:38px 1fr 38px;gap:10px}.resource-callout{grid-template-columns:1fr;gap:18px;margin-bottom:55px;padding:28px}.category-layout,.detail-layout{grid-template-columns:1fr;gap:35px;padding-top:45px}.category-books{grid-template-columns:repeat(2,1fr)}.category-aside{display:block}.category-aside .side-card{margin-top:16px}.book-hero-grid{grid-template-columns:130px 1fr;gap:30px}.detail-cover{width:125px;height:178px;font-size:17px}.detail-aside{display:none}.mini-articles,.related-book-row{grid-template-columns:repeat(2,1fr)}.search-book-list{grid-template-columns:1fr}.footer-main{grid-template-columns:1fr 1fr;gap:30px}.footer-main>div:first-child{grid-column:1/-1}}
@media(max-width:520px){.container,.reading-container,.header-inner{width:min(100% - 24px,1180px)}.category-menu summary span{display:none}.category-panel{left:12px;right:12px;grid-template-columns:repeat(3,1fr)}.hero h1{font-size:36px}.hero-lead{font-size:14px}.search-box{display:grid;padding:5px}.search-box button{padding:11px}.category-grid{grid-template-columns:repeat(2,1fr)}.book-grid,.category-books{grid-template-columns:1fr}.book-card{grid-template-columns:92px 1fr}.book-cover{height:132px}.section-heading>span{display:none}.article-list article{grid-template-columns:1fr 35px}.article-index{display:none}.article-summary p{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.page-hero h1,.search-hero h1{font-size:34px}.page-hero-line{display:block}.page-hero-line span{display:block}.book-hero{padding-bottom:45px}.book-hero-grid{display:block;text-align:center}.detail-cover{margin:auto}.book-intro{margin-top:35px}.book-intro .eyebrow{text-align:center}.book-intro h1{font-size:34px}.book-actions{justify-content:center;flex-wrap:wrap}.ebook-guide{grid-template-columns:1fr}.resource-icon{width:60px;height:60px}.wechat-follow{flex-direction:column;align-items:flex-start}.wechat-follow img{width:132px;height:132px;flex-basis:132px}.mini-articles,.related-book-row{grid-template-columns:1fr}.article-meta{gap:10px 16px}.article-book-card{grid-template-columns:75px 1fr;padding:17px}.small-cover{width:70px;height:100px}.article-pager{grid-template-columns:1fr}.related-list a{grid-template-columns:70px 1fr}.related-list time{display:none}.search-book-list>a{grid-template-columns:55px 1fr}.search-book-list .book-cover{width:52px;height:72px;padding:6px;font-size:10px}.search-book-list>a>b{display:none}.footer-main{grid-template-columns:1fr}.footer-main>div:first-child{grid-column:auto}}
.article-pdf-card{display:grid;grid-template-columns:1fr auto;gap:22px;align-items:center;margin-top:48px;padding:22px 24px;background:var(--paper);border:1px solid var(--line)}
.article-pdf-card>div>p{margin:0;color:var(--gold);font-size:10px;letter-spacing:.14em}
.article-pdf-card h3{margin:6px 0 0;font:700 20px var(--serif);color:var(--ink)}
.article-pdf-card>div>span{display:block;margin-top:6px;color:var(--muted);font-size:12px}
.article-pdf-btn{padding:13px 26px;background:var(--forest);color:#fff;border:0;cursor:pointer;font-size:13px;letter-spacing:.04em;white-space:nowrap}
.article-pdf-btn:hover{background:var(--forest-2)}
.article-pdf-btn:disabled{opacity:.6;cursor:default}
.article-pdf-card+.article-book-card{margin-top:22px}
@media(max-width:520px){.article-pdf-card{grid-template-columns:1fr;gap:16px;padding:18px}.article-pdf-btn{width:100%}}
.buy-links{margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}
.buy-links>b{display:block;margin-bottom:10px;font:700 16px var(--serif)}
.buy-links-list{display:grid;grid-template-columns:minmax(0,1fr);gap:8px}
.buy-link{display:flex;justify-content:space-between;align-items:center;gap:10px;min-width:0;padding:9px 12px;background:var(--paper);border:1px solid var(--line);font-size:13px;color:var(--ink);transition:.2s}
.buy-link>span{min-width:0}
.buy-link:hover{background:var(--forest);border-color:var(--forest);color:#fff}
.buy-link-arrow{color:var(--gold);font-style:normal}
.buy-link:hover .buy-link-arrow{color:#e5cf9f}
.article-book-card .buy-links{border-top-color:rgba(255,255,255,.18)}
.article-book-card .buy-links>b{color:#fff}
.article-book-card .buy-link{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.18);color:#e8efeb}
.article-book-card .buy-link:hover{background:var(--gold);border-color:var(--gold);color:#fff}
.article-book-card .buy-link:hover .buy-link-arrow{color:#fff}
.buy-links-inline{display:none}
@media(max-width:780px){.buy-links-aside{display:none}.buy-links-inline{display:block;margin:0 0 30px;padding-top:0;border-top:0}}
/* 长英文/编号等不可断行内容防溢出：grid/flex 子项默认 min-width:auto 会被最长单词撑开整列 */
h1,h2,h3{overflow-wrap:anywhere}
.prose,.book-description{overflow-wrap:anywhere}
.article-book-card>div,.book-hero-grid>*,.note-cards>a,.related-list a>*,.mini-articles a,.search-book-list>a>*{min-width:0}
/* 正文与 hero 间距：原 hero 下内边距 46 + 正文上内边距 48 + 首元素外边距塌陷 16 = 110px 过散，收紧到 60px */
.article-body>*:first-child{margin-top:0}
.section-more{color:var(--forest);font-size:13px;font-weight:700;white-space:nowrap}.section-more i{color:var(--gold);font-style:normal}.section-more:hover{color:var(--gold)}