:root{--font-sans:-apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;--font-mono:ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;--bg:#f5f5f7;--bg-elevated:#fff;--bg-subtle:#fbfbfd;--text:#1d1d1f;--text-secondary:#6e6e73;--text-tertiary:#86868b;--border:#00000014;--border-strong:#00000024;--accent:#0071e3;--accent-hover:#0077ed;--accent-soft:#0071e31a;--green:#34c759;--orange:#ff9500;--red:#ff3b30;--purple:#af52de;--teal:#30b0c7;--glass-bg:#ffffffb8;--glass-blur:saturate(180%) blur(20px);--shadow-sm:0 1px 2px #0000000a, 0 1px 3px #0000000f;--shadow-md:0 4px 14px #00000014, 0 2px 4px #0000000a;--shadow-lg:0 18px 50px #00000024, 0 6px 16px #00000014;--radius-sm:8px;--radius-md:14px;--radius-lg:22px;--radius-xl:30px;--header-h:56px;--content-w:1080px;--content-w-wide:1240px}:root[data-theme=dark]{--bg:#000;--bg-elevated:#1c1c1e;--bg-subtle:#111113;--text:#f5f5f7;--text-secondary:#a1a1a6;--text-tertiary:#6e6e73;--border:#ffffff1f;--border-strong:#fff3;--accent:#0a84ff;--accent-hover:#409cff;--accent-soft:#0a84ff29;--glass-bg:#1c1c1eb3;--shadow-sm:0 1px 2px #0006;--shadow-md:0 4px 14px #00000080;--shadow-lg:0 18px 50px #0009}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;font-family:var(--font-sans);font-optical-sizing:auto}body{background:var(--bg);color:var(--text);letter-spacing:0;-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-size:17px;line-height:1.55;transition:background-color .35s,color .35s}::selection{background:var(--accent-soft)}h1,h2,h3,h4,h5{color:var(--text);letter-spacing:-.015em;margin:0 0 .5em;font-weight:700;line-height:1.15}h1{letter-spacing:-.025em;font-size:clamp(2rem,5vw,3.2rem);line-height:1.08}h2{letter-spacing:-.02em;font-size:clamp(1.4rem,3vw,1.9rem)}h3{font-size:1.25rem}h4{font-size:1.08rem}p{margin:0 0 1em}a{color:var(--accent);text-decoration:none;transition:color .2s}a:hover{color:var(--accent-hover);text-decoration:underline}img,svg{max-width:100%;height:auto}code,pre{font-family:var(--font-mono);font-size:.9em}.container{width:min(var(--content-w), calc(100% - 2.5rem));margin-inline:auto}.container--wide{width:min(var(--content-w-wide), calc(100% - 2.5rem))}.site-header{z-index:100;height:var(--header-h);background:var(--glass-bg);backdrop-filter:var(--glass-blur);border-bottom:1px solid var(--border);align-items:center;transition:border-color .3s,box-shadow .3s;display:flex;position:sticky;top:0}.site-header.scrolled{border-bottom-color:#0000;box-shadow:0 1px 12px #0000000f}.site-header__inner{width:min(var(--content-w-wide), calc(100% - 2.5rem));align-items:center;gap:1.2rem;margin-inline:auto;display:flex}.site-logo{color:var(--text);letter-spacing:-.01em;white-space:nowrap;align-items:center;gap:.5rem;font-size:15px;font-weight:700;display:flex}.site-logo:hover{text-decoration:none}.site-logo__mark{background:linear-gradient(145deg, var(--accent), #5856d6);color:#fff;width:26px;height:26px;box-shadow:var(--shadow-sm);border-radius:8px;place-items:center;font-size:13px;font-weight:800;display:grid}.site-nav{align-items:center;gap:.25rem;margin-left:.75rem;display:flex}.site-nav a{color:var(--text-secondary);border-radius:999px;padding:.45rem .8rem;font-size:13.5px;transition:background .2s,color .2s}.site-nav a:hover{color:var(--text);background:var(--accent-soft);text-decoration:none}.site-nav a[aria-current=page]{color:var(--text);background:var(--accent-soft);font-weight:600}.site-header__actions{align-items:center;gap:.4rem;margin-left:auto;display:flex}.icon-btn{width:34px;height:34px;color:var(--text);cursor:pointer;background:0 0;border:none;border-radius:50%;place-items:center;transition:background .2s,transform .1s;display:inline-grid}.icon-btn:hover{background:var(--accent-soft)}.icon-btn:active{transform:scale(.92)}.btn{cursor:pointer;background:var(--accent);color:#fff;border:none;border-radius:980px;align-items:center;gap:.5rem;padding:.65rem 1.25rem;font-size:15px;font-weight:500;transition:background .2s,transform .12s,box-shadow .25s;display:inline-flex}.btn:hover{background:var(--accent-hover);color:#fff;text-decoration:none}.btn:active{transform:scale(.96)}.btn--ghost{background:var(--accent-soft);color:var(--accent)}.btn--ghost:hover{background:var(--accent-soft);color:var(--accent-hover)}.btn--secondary{background:var(--bg-elevated);color:var(--text);border:1px solid var(--border-strong)}.btn--secondary:hover{background:var(--bg-subtle);color:var(--text)}.hero{text-align:center;padding:clamp(3.5rem,10vw,6.5rem) 0 clamp(2.5rem,7vw,4.5rem);position:relative}.hero__eyebrow{color:var(--accent);background:var(--accent-soft);border-radius:999px;align-items:center;gap:.4rem;margin-bottom:1.4rem;padding:.35rem .9rem;font-size:13px;font-weight:600;display:inline-flex}.hero h1{max-width:17em;margin-inline:auto}.hero__lead{max-width:40em;color:var(--text-secondary);margin:1.2rem auto 0;font-size:clamp(1.05rem,2vw,1.3rem);line-height:1.5}.hero__actions{flex-wrap:wrap;justify-content:center;gap:.8rem;margin-top:2rem;display:flex}.stat-row{grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:1rem;max-width:880px;margin:0 auto;display:grid}.stat{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center;box-shadow:var(--shadow-sm);padding:1.2rem 1rem}.stat__num{letter-spacing:-.03em;color:var(--text);font-size:1.8rem;font-weight:700}.stat__label{color:var(--text-secondary);margin-top:.2rem;font-size:12.5px}.card-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.2rem;display:grid}.card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);color:var(--text);box-shadow:var(--shadow-sm);will-change:transform;padding:1.5rem;transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s,border-color .3s;display:block;position:relative}.card:hover{box-shadow:var(--shadow-md);border-color:var(--border-strong);color:var(--text);text-decoration:none;transform:translateY(-3px)}.card__icon{background:var(--accent-soft);width:40px;height:40px;color:var(--accent);border-radius:12px;place-items:center;margin-bottom:.9rem;font-size:18px;display:grid}.card h3{margin-bottom:.35rem;font-size:1.1rem}.card p{color:var(--text-secondary);margin:0;font-size:14px;line-height:1.5}.card__meta{color:var(--text-tertiary);margin-top:.9rem;font-size:12px}.section{padding:clamp(2.5rem,6vw,4.5rem) 0}.section--tint{background:var(--bg-subtle);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.section__head{justify-content:space-between;align-items:baseline;gap:1rem;margin-bottom:1.6rem;display:flex}.section__head h2{margin:0}.section__link{white-space:nowrap;font-size:14px}.doc-layout{width:min(var(--content-w), calc(100% - 2.5rem));grid-template-columns:minmax(0,1fr) 240px;gap:2.5rem;margin-inline:auto;padding:2.5rem 0 5rem;display:grid}@media (width<=960px){.doc-layout{grid-template-columns:1fr}}.doc article{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);min-width:0;padding:clamp(1.4rem,4vw,3rem)}.doc article>h1:first-child{margin-top:0}.doc__meta{color:var(--text-tertiary);flex-wrap:wrap;gap:1rem;margin:-.4rem 0 1.4rem;font-size:13px;display:flex}.doc__tags{flex-wrap:wrap;gap:.4rem;margin-bottom:1.2rem;display:inline-flex}.tag{background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:.2rem .7rem;font-size:12px;font-weight:500}.toc{top:calc(var(--header-h) + 1.5rem);max-height:calc(100vh - var(--header-h) - 3rem);font-size:13px;position:sticky;overflow:auto}.toc h4{text-transform:uppercase;letter-spacing:.05em;color:var(--text-tertiary);margin-bottom:.8rem;font-size:12px}.toc ul{margin:0;padding:0;list-style:none}.toc li{margin-bottom:.15rem}.toc a{color:var(--text-secondary);border-left:2px solid #0000;border-radius:8px;padding:.28rem .7rem;display:block}.toc a:hover{color:var(--text);background:var(--accent-soft);text-decoration:none}.toc a.active{color:var(--accent);border-left-color:var(--accent);background:var(--accent-soft)}@media (width<=960px){.toc{display:none}}.prose{min-width:0}.prose h2,.prose h3,.prose h4{scroll-margin-top:calc(var(--header-h) + 1rem);margin-top:1.8em}.prose ul,.prose ol{margin-bottom:1em;padding-left:1.4em}.prose li{margin-bottom:.3em}.prose li::marker{color:var(--text-tertiary)}.prose blockquote{border-left:3px solid var(--border-strong);color:var(--text-secondary);background:var(--bg-subtle);border-radius:0 var(--radius-md) var(--radius-md) 0;margin:1.2em 0;padding:.3em 1.2em}.prose table{border-collapse:collapse;width:100%;margin:1.2em 0;font-size:14px;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--border);text-align:left;vertical-align:top;padding:.55rem .8rem}.prose th{background:var(--bg-subtle);white-space:nowrap;font-weight:600}.prose tr:nth-child(2n) td{background:var(--bg-subtle)}.prose code{background:var(--bg-subtle);border:1px solid var(--border);border-radius:6px;padding:.1em .4em}.prose pre{background:var(--bg-subtle);border:1px solid var(--border);border-radius:var(--radius-md);padding:1rem 1.2rem;line-height:1.55;overflow-x:auto}.prose pre code{background:0 0;border:none;padding:0}.prose img{border-radius:var(--radius-md);border:1px solid var(--border);box-shadow:var(--shadow-sm);margin:1.2em auto;display:block}.prose hr{border:none;border-top:1px solid var(--border);margin:2.2em 0}.admonition{border-radius:var(--radius-md);border:1px solid var(--border);background:var(--bg-subtle);margin:1.3em 0;padding:1rem 1.2rem}.admonition-title{align-items:center;gap:.45rem;margin:0 0 .5rem;font-size:14px;font-weight:700;display:flex}.admonition-body>:last-child{margin-bottom:0}.admonition-body>:first-child{margin-top:0}.admonition-tip{border-left:3px solid var(--green);background:#34c7590f}.admonition-tip .admonition-title{color:var(--green)}.admonition-warning{border-left:3px solid var(--orange);background:#ff950012}.admonition-warning .admonition-title{color:var(--orange)}.admonition-note,.admonition-info{border-left:3px solid var(--accent);background:#0071e30f}.admonition-note .admonition-title,.admonition-info .admonition-title{color:var(--accent)}.admonition-abstract{border-left:3px solid var(--purple);background:#af52de0f}.admonition-abstract .admonition-title{color:var(--purple)}.admonition-danger{border-left:3px solid var(--red);background:#ff3b300f}.admonition-danger .admonition-title{color:var(--red)}.mermaid{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);text-align:center;margin:1.3em 0;padding:1.5rem 1rem;overflow-x:auto}.site-footer{border-top:1px solid var(--border);background:var(--bg-subtle);color:var(--text-secondary);padding:2.5rem 0 3rem;font-size:13px}.site-footer__inner{width:min(var(--content-w-wide), calc(100% - 2.5rem));flex-wrap:wrap;justify-content:space-between;gap:2rem;margin-inline:auto;display:flex}.site-footer nav{flex-wrap:wrap;gap:1.2rem;display:flex}.site-footer a{color:var(--text-secondary)}.site-footer a:hover{color:var(--text)}.search-overlay{z-index:200;backdrop-filter:blur(6px);background:#00000040;display:none;position:fixed;inset:0}.search-overlay.open{display:block}.search-sheet{background:var(--glass-bg);width:min(680px,100% - 2rem);backdrop-filter:var(--glass-blur);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);position:absolute;top:8vh;left:50%;overflow:hidden;transform:translate(-50%)}.search-input-wrap{border-bottom:1px solid var(--border);align-items:center;gap:.7rem;padding:.9rem 1.2rem;display:flex}.search-input{color:var(--text);font-size:17px;font-family:var(--font-sans);background:0 0;border:none;outline:none;flex:1}.search-input::placeholder{color:var(--text-tertiary)}.search-results{max-height:55vh;padding:.5rem;overflow-y:auto}.search-result{border-radius:var(--radius-md);color:var(--text);padding:.75rem 1rem;display:block}.search-result:hover{background:var(--accent-soft);text-decoration:none}.search-result__title{font-size:15px;font-weight:600}.search-result__desc{color:var(--text-secondary);margin-top:.15rem;font-size:13px}.search-result__path{color:var(--text-tertiary);margin-top:.1rem;font-size:12px}.search-empty{text-align:center;color:var(--text-tertiary);padding:1.5rem;font-size:14px}.mobile-menu{z-index:210;background:var(--glass-bg);width:min(320px,85vw);backdrop-filter:var(--glass-blur);border-left:1px solid var(--border);box-shadow:var(--shadow-lg);padding:calc(var(--header-h) + 1rem) 1.5rem 2rem;flex-direction:column;gap:.2rem;display:flex;position:fixed;top:0;bottom:0;right:0;transform:translate(100%)}.mobile-menu.open{transform:translate(0)}.mobile-menu a{border-radius:var(--radius-md);color:var(--text);padding:.7rem .8rem;font-size:17px}.mobile-menu a:hover{background:var(--accent-soft);text-decoration:none}.menu-scrim{z-index:205;backdrop-filter:blur(4px);opacity:0;pointer-events:none;background:#00000040;position:fixed;inset:0}.menu-scrim.open{opacity:1;pointer-events:auto}.menu-toggle{display:none}@media (width<=860px){.site-nav{display:none}.menu-toggle{display:inline-grid}}.reveal{will-change:opacity, transform}::view-transition-old(root){animation:.25s both vt-fade-out}::view-transition-new(root){animation:.3s both vt-fade-in}@keyframes vt-fade-out{to{opacity:0;transform:translateY(-6px)}}@keyframes vt-fade-in{0%{opacity:0;transform:translateY(8px)}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.reveal{opacity:1;transform:none}::view-transition-old(root),::view-transition-new(root){animation:none!important}}@media (prefers-reduced-transparency:reduce){.site-header,.search-sheet,.mobile-menu{background:var(--bg-elevated);backdrop-filter:none}}@media (prefers-contrast:more){body{--border:#00000059;--border-strong:#00000080}:root[data-theme=dark] body{--border:#fff6;--border-strong:#ffffff8c}}#theme-toggle[data-astro-cid-l6lhmie6] .icon-sun[data-astro-cid-l6lhmie6],[data-astro-cid-l6lhmie6][data-theme=dark] #theme-toggle[data-astro-cid-l6lhmie6] .icon-moon[data-astro-cid-l6lhmie6]{display:none}[data-astro-cid-l6lhmie6][data-theme=dark] #theme-toggle[data-astro-cid-l6lhmie6] .icon-sun[data-astro-cid-l6lhmie6]{display:block}.astro-route-announcer{clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;top:0;left:0;overflow:hidden}