:root{--color-bg:#fff;--color-bg-secondary:#f8f9fa;--color-text:#1a1a2e;--color-text-secondary:#6b7280;--color-border:#e5e7eb;--color-accent:#2563eb;--color-accent-hover:#1d4ed8;--color-tag-bg:#eff6ff;--color-tag-text:#2563eb;--color-code-bg:#f1f5f9;--color-header-bg:#fffc;--max-width:720px;--shadow-focus:0 0 0 3px #2563eb1a}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--color-bg:#111827;--color-bg-secondary:#1f2937;--color-text:#f3f4f6;--color-text-secondary:#9ca3af;--color-border:#374151;--color-accent:#60a5fa;--color-accent-hover:#93bbfd;--color-tag-bg:#1e3a5f;--color-tag-text:#93bbfd;--color-code-bg:#1f2937;--color-header-bg:#111827d9;--shadow-focus:0 0 0 3px #60a5fa26}}[data-theme=dark]{--color-bg:#111827;--color-bg-secondary:#1f2937;--color-text:#f3f4f6;--color-text-secondary:#9ca3af;--color-border:#374151;--color-accent:#60a5fa;--color-accent-hover:#93bbfd;--color-tag-bg:#1e3a5f;--color-tag-text:#93bbfd;--color-code-bg:#1f2937;--color-header-bg:#111827d9;--shadow-focus:0 0 0 3px #60a5fa26}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--color-bg);min-width:320px;color:var(--color-text);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;font-size:16px;line-height:1.8}button,input{font:inherit}a{color:inherit}a:focus-visible,input:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}.skip-link{z-index:100;background:var(--color-accent);color:#fff;border-radius:8px;padding:10px 20px;font-size:14px;font-weight:600;text-decoration:none;position:absolute;top:-100%;left:16px}.skip-link:focus{top:12px}.site-frame{flex-direction:column;min-height:100vh;display:flex}.site-main{flex:1}.site-container,.page-container{width:min(var(--max-width), calc(100% - 48px));margin:0 auto}.site-header{z-index:10;border-bottom:1px solid var(--color-border);background:var(--color-header-bg);backdrop-filter:blur(12px);position:sticky;top:0}.header-bar{justify-content:space-between;align-items:center;height:56px;display:flex}.site-name{color:var(--color-text);letter-spacing:-.02em;flex-shrink:0;font-size:18px;font-weight:700;text-decoration:none}.header-right{align-items:center;gap:12px;min-width:0;display:flex}.header-bar .search-input{border:1px solid var(--color-border);background:var(--color-bg);width:140px;color:var(--color-text);border-radius:8px;padding:6px 10px;font-size:13px;line-height:1.4;transition:border-color .16s,box-shadow .16s,width .16s}.header-bar .search-input::placeholder{color:#9ca3af}.header-bar .search-input:focus{border-color:var(--color-accent);width:200px;box-shadow:var(--shadow-focus);outline:0}.site-nav{flex-shrink:0;align-items:center;gap:24px;display:flex}.site-nav a{color:var(--color-text-secondary);padding:4px 0;font-size:14px;text-decoration:none;transition:color .16s;position:relative}.site-nav a:after{content:"";background:var(--color-accent);border-radius:1px;width:0;height:2px;transition:width .16s,left .16s;position:absolute;bottom:-1px;left:50%}.site-nav a:hover{color:var(--color-text)}.site-nav a.is-active{color:var(--color-text);font-weight:600}.site-nav a.is-active:after,.site-nav a:hover:after{width:100%;left:0}.search-row{padding:0 0 16px}.search-input{border:1px solid var(--color-border);background:var(--color-bg);width:100%;color:var(--color-text);border-radius:10px;padding:12px 16px;font-size:16px;line-height:1.5;transition:border-color .16s,box-shadow .16s}.search-input::placeholder{color:#9ca3af}.search-input:focus{border-color:var(--color-accent);box-shadow:var(--shadow-focus);outline:0}.home-page,.standard-page,.article-page{padding-top:48px;padding-bottom:64px}.home-hero{margin-bottom:48px}.home-hero h1,.page-heading h1,.article-header h1,.not-found h1{color:var(--color-text);letter-spacing:-.035em;margin:0;font-size:30px;font-weight:700;line-height:1.35}.home-hero p,.page-heading p{color:var(--color-text-secondary);margin:12px 0 0;font-size:18px;line-height:1.75}.content-divider{background:var(--color-border);height:1px;margin-bottom:0}.post-list{margin:0}.post-item{border-bottom:1px solid var(--color-border)}.post-item[hidden]{display:none}.post-item-inner{padding:24px 0}.post-item h2{letter-spacing:-.018em;margin:0;font-size:20px;font-weight:600;line-height:1.55}.article-link{color:inherit;text-decoration:none}.post-item h2 .article-link:hover{color:var(--color-accent)}.post-excerpt-link{display:block}.post-excerpt{color:var(--color-text-secondary);margin:8px 0 0;font-size:14px;line-height:1.8}.post-card-meta,.article-meta{color:var(--color-text-secondary);flex-wrap:wrap;align-items:center;gap:8px;margin-top:12px;font-size:14px;line-height:1.5;display:flex}.reading-time{color:var(--color-text-secondary);font-size:13px}.post-tags{flex-wrap:wrap;align-items:center;gap:6px;display:inline-flex}.tag-badge{background:var(--color-tag-bg);color:var(--color-tag-text);border-radius:999px;padding:3px 8px;font-size:12px;line-height:1.45;text-decoration:none;transition:background-color .16s,color .16s;display:inline-flex}.tag-badge:hover{background:var(--color-accent);color:#fff}.search-empty{color:var(--color-text-secondary);text-align:center;margin:48px 0 0}.page-heading{margin-bottom:32px}.back-link{color:var(--color-accent);margin-bottom:20px;font-size:14px;text-decoration:none;display:inline-block}.back-link:hover,.not-found a:hover,.footer-links a:hover{color:var(--color-accent-hover);text-underline-offset:3px;text-decoration:underline}.tag-grid{flex-wrap:wrap;gap:12px;display:flex}.tag-card{border:1px solid var(--color-border);min-width:116px;color:var(--color-text);border-radius:10px;justify-content:space-between;align-items:center;gap:16px;padding:14px 16px;text-decoration:none;transition:border-color .16s,color .16s;display:flex}.tag-card:hover{border-color:var(--color-accent);color:var(--color-accent)}.tag-card small{color:var(--color-text-secondary);font-size:13px}.article-header{border-bottom:1px solid var(--color-border);padding-bottom:32px}.article-header h1{font-size:30px;line-height:1.35}.article-meta{margin-top:16px}.prose{color:var(--color-text);font-size:17px;line-height:1.8}.article-header+.prose{padding-top:32px}.prose>:first-child{margin-top:0}.prose p,.prose ul,.prose ol,.prose blockquote,.prose pre{margin:0 0 1.5em}.prose h2,.prose h3,.prose h4{color:var(--color-text);letter-spacing:-.02em;margin:2em 0 .8em;font-weight:600;line-height:1.45}.prose h2{border-top:1px solid var(--color-border);padding-top:1.25em;font-size:24px}.prose h3{font-size:20px}.prose h4{font-size:17px}.prose ul,.prose ol{padding-left:1.45em}.prose li+li{margin-top:.45em}.prose a{color:var(--color-accent);text-underline-offset:3px;text-decoration-color:#2563eb73}.prose a:hover{color:var(--color-accent-hover)}.prose blockquote{border-left:3px solid var(--color-accent);color:var(--color-text-secondary);padding:4px 0 4px 20px}.prose code{background:var(--color-code-bg);border-radius:4px;padding:2px 5px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88em}.prose pre{background:var(--color-code-bg);border-radius:8px;padding:16px;overflow-x:auto}.prose pre code{background:0 0;padding:0}.prose img{border-radius:8px;width:100%;height:auto;margin:1.75em 0;display:block}.toc{border:1px solid var(--color-border);background:var(--color-bg-secondary);border-radius:10px;margin-bottom:36px;padding:18px 20px}.toc-title{color:var(--color-text);margin:0 0 10px;font-size:14px;font-weight:600}.toc-list{margin:0;padding-left:18px;list-style:none}.toc-list li{margin-top:4px}.toc-list li.toc-h3{padding-left:16px}.toc-list li.toc-h4{padding-left:32px}.toc-list a{color:var(--color-text-secondary);font-size:13px;text-decoration:none;transition:color .16s}.toc-list a:hover{color:var(--color-accent)}.article-footer-nav{border-top:1px solid var(--color-border);justify-content:space-between;align-items:flex-start;gap:16px;margin-top:48px;padding-top:24px;display:flex}.footer-nav-left,.footer-nav-right{flex:1;min-width:0}.footer-nav-right{text-align:right}.article-footer-nav a{max-width:100%;color:var(--color-text-secondary);font-size:14px;text-decoration:none;transition:color .16s;display:inline-block}.article-footer-nav a:hover{color:var(--color-accent)}.article-footer-nav .nav-label{color:var(--color-text-secondary);opacity:.7;margin-bottom:2px;font-size:12px;display:block}.article-footer-nav .nav-title{color:var(--color-text);text-overflow:ellipsis;white-space:nowrap;font-weight:500;display:block;overflow:hidden}.about-page .prose{max-width:680px}.not-found{padding-top:18vh;padding-bottom:18vh}.not-found .eyebrow{color:var(--color-accent);margin:0 0 12px;font-size:14px;font-weight:600}.not-found p:not(.eyebrow){color:var(--color-text-secondary);margin:12px 0 20px}.site-footer{border-top:1px solid var(--color-border);color:var(--color-text-secondary);margin-top:auto;padding:16px 0;font-size:13px}.footer-content{justify-content:space-between;align-items:center;gap:20px;display:flex}.footer-content p{margin:0}.footer-links{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:14px;display:flex}.footer-links a{color:inherit;align-items:center;gap:5px;font-size:13px;text-decoration:none;transition:color .16s;display:inline-flex}.footer-links a:hover{color:var(--color-accent)}.footer-links .social-icon{fill:currentColor;flex-shrink:0;width:16px;height:16px}.theme-toggle{border:1px solid var(--color-border);background:var(--color-bg);width:32px;height:32px;color:var(--color-text-secondary);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;margin-left:8px;font-size:16px;line-height:1;transition:border-color .16s,color .16s;display:inline-flex}.theme-toggle:hover{border-color:var(--color-accent);color:var(--color-accent)}.heading-anchor{color:var(--color-text-secondary);opacity:0;margin-left:6px;font-size:.8em;text-decoration:none;transition:opacity .16s,color .16s}.prose h2:hover .heading-anchor,.prose h3:hover .heading-anchor,.prose h4:hover .heading-anchor,.heading-anchor:focus{opacity:1}.heading-anchor:hover{color:var(--color-accent)}.back-to-top{z-index:20;border:1px solid var(--color-border);background:var(--color-bg);width:40px;height:40px;color:var(--color-text-secondary);cursor:pointer;opacity:0;pointer-events:none;border-radius:10px;justify-content:center;align-items:center;font-size:20px;line-height:1;transition:opacity .2s,transform .2s,border-color .16s,color .16s;display:flex;position:fixed;bottom:24px;right:24px;transform:translateY(8px);box-shadow:0 2px 8px #0000000f}.back-to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}.back-to-top:hover{border-color:var(--color-accent);color:var(--color-accent)}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.animate-fade-in{animation:.5s ease-out both fade-in-up}@keyframes fade-in-up{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (width>=768px){.home-hero h1,.page-heading h1,.article-header h1,.not-found h1{font-size:36px}}@media (width<=520px){.site-container,.page-container{width:min(var(--max-width), calc(100% - 32px))}.site-nav{gap:17px}.home-page,.standard-page,.article-page{padding-top:36px;padding-bottom:48px}.home-hero{margin-bottom:36px}.home-hero p,.page-heading p{font-size:16px}.post-item-inner{padding:22px 0}.article-footer-nav{flex-direction:column}.footer-content{display:block}.footer-links{justify-content:flex-start;margin-top:12px}.tag-card{min-width:calc(50% - 6px)}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}