@font-face{font-family:Monoton;src:url(monoton.ttf) format('truetype');font-display:swap}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f5f6f7;color:#333;font:14px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:#ef5b35}button,input{font:inherit}button{cursor:pointer}.container{max-width:1200px;margin:auto;padding:0 20px}.skip-link{position:absolute;left:-9999px;z-index:99}.skip-link:focus{left:15px;top:15px;background:#fff;padding:8px}.site-header{background:#fff;border-bottom:1px solid #eee}.header-inner{min-height:76px;display:flex;align-items:center;gap:18px}.logo{font:31px Monoton,sans-serif;color:#eb5938;letter-spacing:-2px}.brand{font-size:11px;line-height:1.4;color:#999;border-left:1px solid #ddd;padding-left:16px}.desktop-nav{margin-left:auto}.nav-list{display:flex;gap:26px;align-items:center;list-style:none;margin:0;padding:0}.nav-list a{display:block;padding:9px 0;font-weight:600}.icon-button{border:0;background:transparent;font-size:20px;color:#555;padding:7px}.mobile-menu-toggle,.mobile-user{display:none}#search-panel{background:#fff;border-bottom:1px solid #eee;padding:18px 0}.search-form{display:flex;gap:8px}.search-form input{flex:1;min-width:0;border:1px solid #ddd;border-radius:3px;padding:10px}.search-form button,.button,.comment-form input[type=submit]{border:0;border-radius:3px;background:#ef5b35;color:#fff;padding:9px 17px}.breadcrumbs{background:#fff;color:#999;border-bottom:1px solid #eee;padding:9px 0}.layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:24px;padding-top:26px;padding-bottom:45px}.content,.sidebar{min-width:0}.excerpts,.article-panel,.widget{background:#fff;border:1px solid #ececec}.excerpts-title{display:flex;justify-content:space-between;gap:15px;align-items:center;border-bottom:1px solid #eee;padding:16px 22px}.excerpts-title h1{font-size:18px;margin:0}.notice-link{color:#999}.excerpt{padding:22px;border-bottom:1px solid #eee;min-height:172px;overflow:hidden}.excerpt:last-child{border-bottom:0}.excerpt .focus{float:left;width:205px;height:130px;margin-right:20px;background:#f0f0f0}.excerpt .focus img{width:100%;height:100%;object-fit:cover}.excerpt.no-thumbnail .focus{display:none}.excerpt h2{font-size:19px;line-height:1.45;margin:0 0 9px}.excerpt .note{color:#777;margin:0 0 13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.meta,.article-meta{display:flex;flex-wrap:wrap;gap:13px;color:#999;font-size:12px}.meta a:hover,.article-meta a:hover{color:#ef5b35}.like-button,.copy-link{border:0;background:transparent;color:#999;padding:0}.widget{margin-bottom:20px;padding:18px}.widget h3{font-size:16px;margin:0 0 15px;border-bottom:1px solid #eee;padding-bottom:11px}.widget ul{list-style:none;margin:0;padding:0}.widget li{border-bottom:1px dashed #eee;padding:9px 0}.widget li:last-child{border:0}.widget time{font-size:11px;color:#aaa}.widget-tabs{display:flex;border-bottom:1px solid #eee;margin:-18px -18px 12px}.widget-tabs button{flex:1;background:none;border:0;padding:13px}.widget-tabs button[aria-selected=true]{color:#ef5b35;border-bottom:2px solid #ef5b35}.tab-widget li{display:flex;justify-content:space-between;gap:8px}.popular-widget img{width:56px;height:46px;object-fit:cover;float:left;margin-right:10px}.popular-title{display:block;line-height:1.4}.tag-cloud a{display:inline-block;background:#f5f5f5;margin:3px;padding:3px 8px;color:#777}.article-panel{padding:28px}.article-header{border-bottom:1px solid #eee;margin-bottom:24px;padding-bottom:18px}.article-header h1{font-size:27px;line-height:1.4;margin:0 0 12px}.article-content{font-size:16px;line-height:1.9;overflow-wrap:anywhere}.article-content img{max-width:100%;height:auto}.article-content h2{font-size:22px;margin:30px 0 12px}.article-content pre{overflow:auto;background:#f5f5f5;padding:15px}.article-tags,.article-actions,.post-navigation{border-top:1px solid #eee;padding:15px 0;margin-top:20px}.article-actions{display:flex;gap:18px}.post-navigation{display:flex;justify-content:space-between;gap:20px}.site-footer{background:#fff;border-top:1px solid #eee;color:#999;text-align:center;padding:24px 0}.footer-links{display:flex;justify-content:center;gap:22px}.navigation.pagination{margin:20px 0}.nav-links{display:flex;gap:7px;justify-content:center}.page-numbers{background:#fff;padding:6px 11px;border:1px solid #eee}.page-numbers.current{background:#ef5b35;color:#fff}.empty-state{text-align:center;padding:60px 20px}.muted{color:#999}.screen-reader-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}#login-dialog{border:0;border-radius:6px;padding:25px;width:min(400px,90vw);box-shadow:0 15px 60px #0003}#login-dialog::backdrop{background:#0008}.dialog-close{float:right}.login-links{display:flex;justify-content:space-between}#login-dialog input:not([type=checkbox]){width:100%;padding:8px}.back-to-top{position:fixed;bottom:25px;right:25px;background:#fff;box-shadow:0 2px 10px #0002}.drawer-backdrop{position:fixed;inset:0;background:#0008;z-index:20}#mobile-navigation{position:fixed;inset:0 auto 0 0;width:min(310px,85vw);background:#fff;z-index:21;padding:22px;overflow:auto}#mobile-navigation .nav-list{display:block}#mobile-navigation .nav-list a{padding:12px 0;border-bottom:1px solid #eee}.drawer-close{display:block;margin-left:auto}.toc-widget a{display:block;padding:5px 0;color:#777}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid #ef5b35;outline-offset:2px}@media(max-width:900px){.layout{grid-template-columns:minmax(0,1fr) 240px;gap:15px}.desktop-nav .nav-list{gap:12px}.excerpt .focus{width:150px;height:105px}}@media(max-width:720px){.container{padding-left:15px;padding-right:15px}.header-inner{min-height:60px}.mobile-menu-toggle,.mobile-user{display:block}.desktop-nav,.brand{display:none}.logo{font-size:24px}.search-toggle{margin-left:auto}.layout{display:block;padding-top:15px}.sidebar{margin-top:18px}.excerpt{padding:16px}.excerpt .focus{width:110px;height:90px;margin-right:12px}.excerpt h2{font-size:16px}.excerpt .note{font-size:12px}.meta{gap:6px}.article-panel{padding:17px}.article-header h1{font-size:22px}.excerpts-title{padding:14px}.excerpts-title h1{font-size:16px}}
@font-face{font-family:wt-icons;src:url(icons.woff2) format("woff2");font-display:block}.wt-icon{font-family:wt-icons!important;font-style:normal;font-weight:normal}

/* Article title and metadata follow the centered reference header. */
.article-header{text-align:center}.article-header .article-meta{justify-content:center}

/* Compact category navigation; mobile drawer exposes all eight categories. */
.nav-list .is-current,.nav-more details.is-current>summary{color:#ef5b35}
.nav-more{position:relative}.nav-more summary{cursor:pointer;list-style:none;padding:9px 0;font-weight:600;white-space:nowrap}.nav-more summary::-webkit-details-marker{display:none}
.nav-more summary:focus-visible{outline:2px solid #ef5b35;outline-offset:4px}
.category-dropdown{position:absolute;right:0;top:100%;z-index:30;min-width:156px;list-style:none;margin:0;padding:8px;background:#fff;border:1px solid #ececec;border-radius:5px;box-shadow:0 8px 24px #0002}
.category-dropdown a{padding:9px 14px;white-space:nowrap;border-radius:3px}.category-dropdown a:hover{background:#fff3ef}
@media(min-width:721px) and (max-width:1000px){.header-inner{gap:12px}.brand{display:none}.desktop-nav .nav-list{gap:16px}}

.wt-account-entry{white-space:nowrap;font-size:13px;color:#777}.comment-form textarea{width:100%;max-width:100%;padding:12px;border:1px solid #ddd;border-radius:4px}.comment-list{padding-left:22px}.comment-list .comment-body{padding:16px 0;border-bottom:1px solid #eee}.comment-metadata{font-size:12px;color:#999}.comments-section{margin-top:28px}.comment-form label{display:block}.excerpts-title{flex-wrap:wrap}