:root{--color-primary:#111827;--color-text:#111827;--color-text-hover:#374151;--color-text-secondary:#6b7280;--color-text-tertiary:#9ca3af;--color-text-error:#f33;--color-text-warn:#f90;--color-text-reverse:#fff;--color-link:#111827;--color-link-hover:#0284c7;--color-border:#e5e7eb;--color-border-weak:#b5bac2;--color-border-light:#d1d5db;--bg-paper:#fff;--bg-gray:#f5f5f5;--bg-reverse:#1f210c;--radius-sm:1px;--radius-md:2px;--radius-lg:4px;--shadow-base:0 0 2px 0 #e5e7eb, 0 2px 2px 0 #00000026;--shadow-layout:0 2px 8px 0 #ecececdb;--shadow-layout-reverse:0 -2px 8px 0 #ecececdb;--anim-duration:.3s;--width-content:800px;--font-code:Monaco, Courier, "Courier New", monospace}.basic-layout{max-width:var(--width-content);background:var(--bg-paper);border:1px solid var(--color-border);box-shadow:var(--shadow-layout);margin:40px auto 80px;padding:0 60px}.basic-layout-body{font-size:16px;line-height:1.8em}.basic-layout-body a:hover{color:var(--color-link-hover)}.site-nav{justify-content:space-between;align-items:flex-start;height:200px;padding:60px 0 0;display:flex}.site-nav-header{overflow:hidden}.site-nav-title{white-space:nowrap;font-size:32px;font-weight:700;line-height:50px}.site-nav-slogan{color:var(--color-text-tertiary);padding:16px 0;font-size:16px}.site-nav-links{align-items:flex-start;margin-top:14px;margin-right:-8px;font-size:16px;display:flex}.site-nav-links a{padding:.5rem 1rem;transition:all .3s ease-in-out}.site-nav-links a:hover{background-color:var(--bg-gray);color:var(--color-link-hover)}.site-nav-links a.site-nav-current{color:var(--color-link-hover);text-underline-offset:6px;font-weight:700;text-decoration:underline;text-decoration-thickness:3px}.site-nav-dropdown{align-items:center;display:flex;position:relative}.site-nav-trigger{cursor:pointer;padding:.5rem 1rem;transition:all .3s ease-in-out;display:inline-block}.site-nav-trigger:hover{background-color:var(--bg-gray);color:var(--color-link-hover)}.site-nav-trigger.site-nav-current{color:var(--color-link-hover);text-underline-offset:6px;font-weight:700;text-decoration:underline;text-decoration-thickness:3px}.site-nav-dropdown-menu{background:var(--bg-paper);border:1px solid var(--color-border);border-radius:var(--radius-md);z-index:100;min-width:120px;padding:4px 0;display:none;position:absolute;top:100%;left:50%;transform:translate(-50%);box-shadow:0 4px 12px #0000001f}.site-nav-dropdown--top .site-nav-dropdown-menu{top:auto;bottom:100%}.site-nav-dropdown:hover .site-nav-dropdown-menu{flex-direction:column;display:flex}.site-nav-dropdown-item{white-space:nowrap;border-radius:var(--radius-sm);margin:2px 6px;padding:6px 12px;font-size:14px;transition:background .15s}.site-nav-dropdown-item:hover{background-color:var(--bg-gray)}.site-nav-dropdown-active{color:var(--color-link-hover);font-weight:700}.site-footer{background:var(--bg-paper);border-top:1px solid var(--color-border);box-shadow:var(--shadow-layout-reverse);padding:20px;font-size:14px}.site-footer-content{max-width:var(--width-content);gap:24px;margin:0 auto;padding:10px 0;display:flex}.site-footer-block,.site-footer-block ul,.site-footer-block ol{padding-left:1em}.site-footer-block ol{padding-left:2em}.site-footer-block li::marker{font-family:var(--font-code);color:var(--color-text-tertiary)}.site-footer-block ul li{padding-inline-start:1ch;list-style-type:"-"}.site-footer-block ol li{list-style-type:decimal}.site-footer-block:first-child{flex:1}.site-footer-block:nth-child(2){flex:2}.site-footer-block h3{font-size:20px;line-height:2em}.site-footer-categories{line-height:1.7em}.site-footer-num{opacity:.5}.site-footer-search{align-items:center;margin-top:40px;display:flex}.site-footer-search input,.site-footer-search button{height:36px}.site-footer-search input{border-radius:var(--radius-md) 0 0 var(--radius-md);border-right:none;flex:1;padding:0 8px}.site-footer-search input::placeholder{font-size:12px}.site-footer-search button{border-radius:0 var(--radius-md) var(--radius-md) 0;background:var(--color-primary);color:var(--color-text-reverse);border:none;padding:0 12px}.site-footer-rss{color:var(--color-text-tertiary);margin-top:20px}.site-footer-rss a{color:var(--color-text-tertiary)}.site-footer-rss a:hover{color:var(--color-link-hover)}.site-footer-tags{font-size:12px}.site-footer-tags a{border:1px solid var(--color-border);margin:0 8px 4px 0;padding:4px 8px;display:inline-block}.site-footer-tags a:hover{background:var(--bg-paper);border-color:var(--color-link-hover);transform:scale(1.1)}.site-footer-tags a:focus-visible{border-color:var(--color-link-hover)}.site-footer-copyright{text-align:center;padding:40px 0;font-size:12px}.post-list{max-width:var(--width-content);padding:20px 0 40px}.post-list-item{cursor:pointer;border-radius:var(--radius-sm);margin-bottom:60px;padding-top:30px;transition:background .3s,box-shadow .3s;position:relative}.post-list-item:hover{background-color:var(--bg-gray);box-shadow:0 0 0 20px var(--bg-gray)}.post-list-item:hover .post-list-summary,.post-list-item:hover .post-list-read-more{color:var(--color-text-hover);opacity:.8}.post-list-item h2.post-list-title{padding:0}.post-list-time{border-left:2px solid var(--color-border-weak);height:1em;margin-top:12px;padding-left:.8em;line-height:1em}.post-list-info{color:var(--color-text-tertiary);font-size:14px}.post-list-summary{color:var(--color-text-secondary);margin:10px 0;transition:all .3s}.post-list-summary a{color:var(--color-link);text-underline-offset:6px;text-decoration:underline}.post-list-summary a:hover{color:var(--color-link-hover)}.post-list-summary a:focus-visible{color:var(--color-link-hover);text-decoration:none}.post-list-read-more{height:1.5em;color:var(--color-text-secondary);align-items:center;gap:.5em;font-size:14px;transition:all .3s;display:inline-flex}.post-list-read-more:hover{opacity:1}.post-list-icon{opacity:.5}.post-list-item.has-cover{gap:24px;display:flex}.post-list-cover{flex-shrink:0;width:200px}.post-list-cover img{border-radius:4px;width:100%;height:auto;display:block}.post-list-body{flex:1;min-width:0}.post-list-empty{color:var(--color-text-tertiary);font-style:italic}.post-list-pager .post-list-label{color:var(--color-text-tertiary);margin-bottom:.5rem;font-size:.875rem;line-height:1.25rem}.post-list-pagination{flex-wrap:wrap;gap:4px 8px;margin-bottom:60px;font-size:12px;line-height:2em;display:flex}.post-list-pagination a,.post-list-pagination span{width:2rem;height:2rem;color:var(--color-text-secondary);border-radius:var(--radius-md);border:1px solid #0000;justify-content:center;align-items:center;display:flex}.post-list-pagination a{box-shadow:none!important}.post-list-pagination a:hover,.post-list-pagination span{border-color:var(--color-border-light)}.toc{transition:var(--anim-duration);flex-direction:column;margin-top:10px;padding:12px 16px 12px 14px;font-size:14px;line-height:1.8em;display:inline-flex}.toc-header{align-items:center;gap:4px;margin-bottom:4px;font-weight:700;display:flex}.toc-item{border-left:1px solid var(--color-border);margin-left:10px;padding-left:11px}.toc-number{color:var(--color-text-secondary);opacity:.5;font-family:Monaco,Menlo,Consolas,Courier New,monospace}.toc-title{color:var(--color-text-secondary)}.toc-h2{padding-left:1.5em}.toc-h3{padding-left:2.5em}.toc-h4{padding-left:3.5em}.toc-h5{padding-left:4.5em}.toc-h6{padding-left:5.5em}.captcha-input{align-items:center;gap:8px;display:flex}.captcha-input-image{background:var(--bg-gray);cursor:pointer;border:1px solid var(--color-border);width:100px;height:40px;overflow:hidden}.captcha-input-image img{height:40px}.captcha-input-field{display:flex}.captcha-input-field input{flex:1}.feedback-form form,.comment-form form{flex-direction:column;display:flex}.feedback-form label,.comment-form label{margin-top:1em;line-height:2em}.feedback-form input,.comment-form input{height:40px;padding:0 8px}.feedback-form button,.comment-form button{height:42px;margin-top:40px;font-size:16px}.feedback-form-info,.comment-form-info{color:var(--color-text-tertiary)}.page-loading,.loading{padding:40px}.lizhi-ad{font-size:14px}.lizhi-ad a{box-shadow:none!important;text-decoration:none!important}.lizhi-ad a.lizhi-ad-container:hover{border-color:var(--color-link-hover);background-color:var(--bg-gray);box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -4px #0000001a!important}.lizhi-ad a.lizhi-ad-container:hover .lizhi-ad-desc{color:var(--color-link-hover);opacity:.5}.lizhi-ad-top{align-items:center;gap:4px;display:flex}.lizhi-ad-help{color:var(--color-text-tertiary);font-size:12px}.lizhi-ad-refresh{color:var(--color-text-tertiary);background:0 0;border:0;justify-content:center;align-items:center;transition:all .3s;display:flex}.lizhi-ad-refresh:hover{background:var(--bg-gray);color:var(--color-text)}.lizhi-ad-container{border:1px solid var(--color-border-light);border-radius:var(--radius-lg);background:var(--bg-paper);align-items:center;gap:16px;padding:8px;display:flex}.lizhi-ad-icon{align-items:center;width:64px;height:64px;display:flex}.lizhi-ad-icon img{width:64px;display:block}.lizhi-ad-title{margin-bottom:4px;font-weight:700;line-height:1.2em}.lizhi-ad-desc{color:var(--color-text-tertiary);line-height:1.5;transition-duration:.3s}.posts-archive{max-width:var(--width-content);margin-bottom:60px;padding:20px 0 40px}.posts-archive ul{margin-top:-30px;padding-left:6em;list-style:none}.posts-archive li{gap:1em;margin:0;padding:4px 0;font-size:14px;line-height:1.5em;display:flex}.posts-archive-date{font-family:var(--font-code);letter-spacing:0;color:var(--color-text-tertiary);font-size:12px}.posts-archive-year{margin-bottom:2em}.posts-archive-year h2{width:4em;margin:0;padding:0;position:sticky;top:10px}.posts-filter{max-width:var(--width-content);padding:20px 0 40px}.posts-filter-bar{margin-bottom:40px}.posts-filter-by{color:var(--color-text-tertiary);font-weight:300}.posts-filter-back{justify-content:flex-start;margin-top:.5rem;display:flex}.posts-filter-back a{color:var(--color-text-tertiary);align-items:center;gap:.5rem;font-size:14px;display:flex}.post-detail{max-width:var(--width-content);padding:40px 0;position:relative}.post-detail h1,.post-detail h2,.post-detail h3,.post-detail h4{scroll-margin:16px;font-weight:500}.post-detail-cover{border-radius:4px;width:100%;height:auto;margin-bottom:20px}.post-detail-title{margin-bottom:20px}.post-detail .post-detail-table-wrapper{width:100%;overflow:auto}.post-detail pre code{padding:20px 16px}.post-detail-date{border-left:2px solid var(--color-border-weak);height:1em;margin-bottom:20px;padding-left:.8em;line-height:1em}.post-detail-info{color:var(--color-text-tertiary);margin-top:10px;font-size:14px}.post-detail-info a{color:var(--color-text-tertiary);text-underline-offset:6px;text-decoration:underline}.post-detail-info a:hover{color:var(--color-link-hover)}.post-detail-info a:focus-visible{color:var(--color-link-hover);text-decoration:none}.post-detail-content{color:var(--color-text);padding:30px 0 60px;overflow:auto}.post-detail-content a{color:var(--color-link);text-underline-offset:6px;text-decoration:underline}.post-detail-content a:hover{color:var(--color-link-hover)}.post-detail-content a:focus-visible{color:var(--color-link-hover);text-decoration:none}.post-detail-content ul,.post-detail-content ol{padding-left:2em}.post-detail-content ol{padding-left:3em}.post-detail-content li::marker{font-family:var(--font-code);letter-spacing:0;color:var(--color-text-tertiary)}.post-detail-content ul li{padding-inline-start:1ch;list-style-type:"-"}.post-detail-content ol li{list-style-type:decimal}.post-detail-content:after{content:"◼";opacity:.5;font-size:12px;display:block}.post-detail-content p+h2,.post-detail-content figure+h2,.post-detail-content pre+h2,.post-detail-content blockquote+h2,.post-detail-content div+h2,.post-detail-content table+h2,.post-detail-content ul+h2,.post-detail-content ol+h2{margin-top:1.2em;margin-bottom:.2em}.post-detail-content p+h3,.post-detail-content figure+h3,.post-detail-content pre+h3,.post-detail-content blockquote+h3,.post-detail-content div+h3,.post-detail-content table+h3,.post-detail-content ul+h3,.post-detail-content ol+h3,.post-detail-content p+h4,.post-detail-content figure+h4,.post-detail-content pre+h4,.post-detail-content blockquote+h4,.post-detail-content div+h4,.post-detail-content table+h4,.post-detail-content ul+h4,.post-detail-content ol+h4{margin-top:1em}.post-detail-content img{max-width:100%}.post-detail-content figure{margin-top:0}.post-detail-content p+figure,.post-detail-content div+figure{margin-top:2em}.post-detail-content h2+figure,.post-detail-content h3+figure{margin-top:.5em}.post-detail-content del{opacity:.5}.post-detail-img{text-align:center;justify-content:center;align-items:center;padding:.5em 0;display:flex}.post-detail-props{color:var(--color-text-tertiary);gap:2em;margin-top:20px;font-size:14px;display:flex}.post-detail-props a{color:var(--color-text-tertiary);text-underline-offset:6px;text-decoration:underline}.post-detail-props a:hover{color:var(--color-link-hover)}.post-detail-props a:focus-visible{color:var(--color-link-hover);text-decoration:none}.post-detail-props span{display:inline-block}.post-detail-props a{margin-right:1em}.post-detail-props a:last-child{margin-right:0}.post-detail-neighbors{border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);gap:10px;margin:2em 0;padding:1.5em 0;font-size:14px;display:flex}.post-detail-neighbors>div{border-radius:var(--radius-sm);flex-direction:column;flex:1;align-items:flex-start;gap:5px;line-height:1.3em;transition:all .3s;display:flex}.post-detail-neighbors>div:nth-child(2){align-items:flex-end}.post-detail-neighbors>div:nth-child(2) a{text-align:right}.post-detail-neighbors>div:not(.is-disabled){cursor:pointer}.post-detail-neighbors>div:not(.is-disabled):hover{box-shadow:0 0 0 10px var(--bg-gray);background-color:var(--bg-gray)}.post-detail-neighbors .post-detail-label{color:var(--color-text-tertiary);font-size:12px}.post-detail-neighbors>div a{display:inline-flex}.post-detail-no-records{color:var(--color-text-tertiary);font-style:italic}.post-detail-related{margin-bottom:60px;font-size:14px}.post-detail-related ul,.post-detail-related li{margin:0;padding:0}.post-detail-related li{list-style:none}.post-detail-related li:before{content:"-";opacity:.5;margin:0 .5em 0 2px;display:inline-block}.post-comments{font-size:14px}.post-comment{margin-bottom:40px}.post-comment ul,.post-comment ol{padding-left:2em}.post-comment ol{padding-left:3em}.post-comment li::marker{font-family:var(--font-code);letter-spacing:0;color:var(--color-text-tertiary)}.post-comment ul li{padding-inline-start:1ch;list-style-type:"-"}.post-comment ol li{list-style-type:decimal}.post-comment:last-child{margin-bottom:0}.post-comment-username{font-weight:700}.post-comment-children{background:var(--bg-gray);margin:10px 0 0 40px;padding:20px}.post-comment-children .post-comment-children{padding:20px 0}.post-comment-content{overflow:auto}.post-comment-reply-form{border:1px solid var(--color-border);background:var(--bg-paper);padding:16px 16px 64px}.post-comment-form{margin:60px 0 80px}.post-comment-closed{color:var(--color-text-tertiary);margin:120px 0 160px;font-size:1.5em;font-style:italic}.post-detail-toc-wrapper{justify-content:flex-end;display:flex}.post-detail-toc{position:fixed;top:40px;transform:translate(calc(100% + 70px))}.post-detail-toc [data-current=true]{border-left-color:var(--color-text);font-weight:700}.post-detail-toc [data-current=true] a>span{color:var(--color-text)}.back-to-top-wrapper{justify-content:flex-end;display:flex}.back-to-top{z-index:9999;width:42px;height:42px;color:var(--color-text);cursor:pointer;border:1px solid var(--color-border);background:var(--bg-paper);transition:var(--anim-duration);border-radius:0;justify-content:center;align-items:center;font-size:1.5em;display:flex;position:fixed;bottom:60px;transform:translate(calc(100% + 80px));box-shadow:0 1px 2px #0000000d}.back-to-top:hover{border-color:var(--color-link-hover);color:var(--color-link-hover);box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -2px #0000001a}.guestbook{max-width:720px;margin:0 auto;padding:20px 0}.guestbook-title{margin-bottom:10px;font-size:24px}.guestbook-form{margin:20px 0 40px}.guestbook-section-title{margin-bottom:16px;font-size:18px}.guestbook-messages{margin-top:30px}.guestbook-message{border-bottom:1px solid var(--color-border-light);padding:12px 0}.guestbook-message:last-child{border-bottom:none}.guestbook-message-header{align-items:center;gap:12px;margin-bottom:6px;display:flex}.guestbook-author{font-size:14px;font-weight:600}.guestbook-time{color:var(--color-text-tertiary);font-size:12px}.guestbook-message-content{white-space:pre-wrap;font-size:14px;line-height:1.6}.contact-page{max-width:var(--width-content);padding:20px 0 40px}.contact-page-form{margin:40px 0 120px}.dynamic-page{max-width:var(--width-content);padding:20px 0 40px}.dynamic-page-title{margin-bottom:1em;font-size:1.5em}.dynamic-page-content{line-height:1.8}.dynamic-page-content h2{margin-top:2em;margin-bottom:.5em;font-size:1.2em}.dynamic-page-content h3{margin-top:1.5em;margin-bottom:.5em;font-size:1.1em}.dynamic-page-content p{margin-bottom:1em}.dynamic-page-content ul,.dynamic-page-content ol{margin-bottom:1em;padding-left:2em}.dynamic-page-content a{text-underline-offset:3px;text-decoration:underline}.dynamic-page-content img{max-width:100%}.preview-notice{z-index:10000;color:#fff;background:#f59e0b;justify-content:center;align-items:center;gap:12px;padding:8px 16px;font-size:13px;display:flex;position:fixed;top:0;left:0;right:0}.preview-notice-close{color:#fff;cursor:pointer;opacity:.7;background:0 0;border:none;padding:0 4px;font-size:14px;line-height:1}.preview-notice-close:hover{opacity:1}.not-found{max-width:var(--width-content);text-align:center;margin:0 auto;padding:60px 20px}.not-found-title{font-size:1.5em;font-weight:500}.not-found-desc{color:var(--color-text-tertiary);margin:16px 0 32px}.not-found-actions{justify-content:center;gap:12px;display:flex}.not-found-btn{background:var(--color-primary);color:var(--color-text-reverse);border-radius:var(--radius-md);cursor:pointer;border:none;align-items:center;gap:6px;padding:8px 20px;font-size:14px;text-decoration:none;transition:opacity .2s;display:inline-flex}.not-found-btn:hover{opacity:.85;color:var(--color-text-reverse)}.w-spacer{flex:1}.w-dialog-btn-primary{background-color:var(--color-primary);color:var(--color-text-reverse);border-radius:var(--radius-md);cursor:pointer;min-width:120px;height:42px;padding:0 2em;font-size:16px}.w-dialog-popup{border-radius:var(--radius-md)!important;padding-bottom:2em!important}@media screen and (max-width:800px){.basic-layout{box-shadow:none;border:none;margin:0 auto 40px;padding:0 20px}.site-nav{flex-direction:column;justify-content:center;align-items:center;height:260px;padding:60px 0 40px}.site-nav-header{text-align:center}.site-nav-links{margin:20px 0 0;font-size:18px}.site-footer{box-shadow:none}.site-footer-content{flex-direction:column;padding:10px 0}.site-footer-block:first-child{width:100%;padding-top:90px;position:relative}.site-footer-search{width:100%;margin:0;position:absolute;top:10px}.post-list-item{border-radius:0}.post-list-item.has-cover{flex-direction:column}.post-list-cover{width:100%}.captcha-input-field{flex:1}.feedback-form-submit button[type=submit],.comment-form-submit button[type=submit]{width:100%}.posts-archive ul{flex-direction:column;gap:.8em;padding-left:5em;display:flex}.posts-archive li{flex-direction:column;gap:0;padding:0;font-size:16px;display:flex}.posts-archive-year{flex-direction:column;gap:20px;margin-bottom:4em}.post-detail-content{font-size:18px;line-height:1.7em}.post-comment-children{margin:10px 0 0 20px}}