.article-shell[data-astro-cid-ltnrycih]{--article-top-align: 80px;--article-anchor-offset: calc(var(--nav-height) + var(--article-top-align));display:grid;grid-template-columns:minmax(20px,1fr) minmax(0,var(--container)) minmax(20px,1fr);min-height:calc(100vh - var(--nav-height));padding-bottom:80px}.article-left[data-astro-cid-ltnrycih],.article-right[data-astro-cid-ltnrycih]{padding:var(--article-top-align) 20px 0}.article-left-fixed[data-astro-cid-ltnrycih]{display:flex;flex-direction:column;gap:30px;height:calc(100vh - var(--nav-height) - var(--article-top-align));left:20px;max-height:calc(100vh - var(--nav-height) - var(--article-top-align));opacity:0;overflow-y:auto;pointer-events:none;position:fixed;top:calc(var(--nav-height) + var(--article-top-align));transform:translateY(8px);transition:opacity .42s var(--ease-out),transform .42s var(--ease-out);width:min(280px,calc((100vw - 640px)/2 - 40px))}.article-left-fixed[data-astro-cid-ltnrycih][data-visible=true]{opacity:1;pointer-events:auto;transform:translateY(0)}.back-link[data-astro-cid-ltnrycih]{align-items:flex-start;color:var(--color-black-4);display:inline-flex;font-family:var(--font-mono);font-size:14px;gap:6px;letter-spacing:.02em;line-height:1.4;min-height:0;text-decoration:none;transition:color .26s var(--ease-out)}.back-link[data-astro-cid-ltnrycih] span[data-astro-cid-ltnrycih]{display:inline-block;transition:transform .26s var(--ease-out)}.back-link[data-astro-cid-ltnrycih]:hover,.back-link[data-astro-cid-ltnrycih]:focus-visible{color:var(--color-black-1)}.back-link[data-astro-cid-ltnrycih]:hover span[data-astro-cid-ltnrycih],.back-link[data-astro-cid-ltnrycih]:focus-visible span[data-astro-cid-ltnrycih]{transform:translate(2px)}.toc[data-astro-cid-ltnrycih]{--toc-indicator-height: 28px;--toc-indicator-y: 0px;display:flex;flex-direction:column;gap:0;margin-top:0;max-width:280px;overflow:hidden;position:relative}.toc[data-astro-cid-ltnrycih]:before,.toc[data-astro-cid-ltnrycih]:after{content:"";left:0;pointer-events:none;position:absolute;top:0;width:1px}.toc[data-astro-cid-ltnrycih]:before{background:var(--color-black-6);bottom:0}.toc[data-astro-cid-ltnrycih]:after{background:var(--color-black-1);height:var(--toc-indicator-height);transform:translateY(var(--toc-indicator-y));transition:height .52s cubic-bezier(.34,1.56,.64,1),transform .52s cubic-bezier(.34,1.56,.64,1)}.toc[data-astro-cid-ltnrycih] a[data-astro-cid-ltnrycih]{align-items:center;color:var(--color-black-5);display:flex;font-family:var(--font-sans);font-size:12px;height:28px;letter-spacing:0;line-height:1.4;overflow:hidden;padding-left:20px;text-decoration:none;text-overflow:ellipsis;transition:color .26s var(--ease-out),transform .26s var(--ease-out);white-space:nowrap}.toc[data-astro-cid-ltnrycih] a[data-astro-cid-ltnrycih]:hover,.toc[data-astro-cid-ltnrycih] a[data-astro-cid-ltnrycih]:focus-visible,.toc[data-astro-cid-ltnrycih] a[data-astro-cid-ltnrycih].active{color:var(--color-black-1)}.toc[data-astro-cid-ltnrycih] a[data-astro-cid-ltnrycih]:hover,.toc[data-astro-cid-ltnrycih] a[data-astro-cid-ltnrycih]:focus-visible{transform:translate(2px)}.article-main[data-astro-cid-ltnrycih]{--article-text-primary: #1c1c1e;--article-text-secondary: #49494a;min-width:0;padding-top:var(--article-top-align)}:root[data-theme=dark] .article-main[data-astro-cid-ltnrycih]{--article-text-primary: #ffffff;--article-text-secondary: rgb(255 255 255 / 80%)}.article-header[data-astro-cid-ltnrycih]{display:flex;flex-direction:column;gap:40px;margin-bottom:60px}.meta[data-astro-cid-ltnrycih]{color:var(--color-black-4);font-family:var(--font-mono);font-size:14px;letter-spacing:.02em;line-height:1.4;margin:0}h1[data-astro-cid-ltnrycih]{color:var(--article-text-primary);font-size:40px;font-weight:600;letter-spacing:-.02em;line-height:1.12;margin:0;text-wrap:unset}html[lang=zh-CN] h1[data-astro-cid-ltnrycih]{font-weight:500;line-height:1.2;letter-spacing:-.01em}.description[data-astro-cid-ltnrycih]{color:var(--color-black-3);font-size:16px;letter-spacing:.01em;line-height:1.5;margin:0}.cover[data-astro-cid-ltnrycih]{--article-cover-width: min(1280px, calc(100vw - var(--page-pad) * 2));aspect-ratio:2 / 1;background:var(--color-white);border:1px solid var(--color-black-6);border-radius:var(--radius-md);display:block;height:min(640px,calc(50vw - var(--page-pad)));margin-left:calc((100% - var(--article-cover-width)) / 2);margin-bottom:60px;max-width:none;min-height:0;object-fit:cover;width:var(--article-cover-width)}.placeholder[data-astro-cid-ltnrycih]{background-image:linear-gradient(var(--color-black-6) 1px,transparent 1px),linear-gradient(90deg,var(--color-black-6) 1px,transparent 1px);background-size:34px 34px;opacity:.5}@media(max-width:980px){.article-shell[data-astro-cid-ltnrycih]{display:block;margin-inline:auto;max-width:calc(var(--container) + var(--page-pad) * 2);padding-inline:20px}.article-left[data-astro-cid-ltnrycih]{padding:72px 0 0}.article-left-fixed[data-astro-cid-ltnrycih]{height:auto;max-height:none;opacity:1;overflow:visible;pointer-events:auto;position:static;transform:none;width:auto}.back-link[data-astro-cid-ltnrycih]{align-items:center;line-height:1.5;min-height:32px}.toc[data-astro-cid-ltnrycih],.article-right[data-astro-cid-ltnrycih]{display:none}.article-main[data-astro-cid-ltnrycih]{padding-top:32px}}@media(max-width:520px){h1[data-astro-cid-ltnrycih]{font-size:32px}.cover[data-astro-cid-ltnrycih]{aspect-ratio:16 / 10}}