:root{--bg: #fdfdfc;--fg: #141414;--muted: #6b6b6b;--line: #e4e4e2;--panel: #f6f6f5;--panel2: #ededec;--acc-green: #2e7d5b;--acc-blue: #2f5e93;--acc-purple: #6d4f96;--max: 44rem;--wide: 1100px;color-scheme:light}:root[data-theme=dark]{--bg: #0d0d0d;--fg: #eaeaea;--muted: #8f8f8f;--line: #242424;--panel: #131313;--panel2: #191919;--acc-green: #79b795;--acc-blue: #7fa7d4;--acc-purple: #a68bc9;color-scheme:dark}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg: #0d0d0d;--fg: #eaeaea;--muted: #8f8f8f;--line: #242424;--panel: #131313;--panel2: #191919;--acc-green: #79b795;--acc-blue: #7fa7d4;--acc-purple: #a68bc9;color-scheme:dark}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Noto Sans CJK SC,Microsoft YaHei,sans-serif;font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased;transition:background .25s ease,color .25s ease}main{max-width:var(--max);margin:0 auto;padding:0 1.5rem 8rem}a{color:inherit;text-decoration:underline;text-decoration-color:var(--muted);text-underline-offset:.25em}a:hover{text-decoration-color:var(--fg)}h1,h2,h3{font-weight:700;line-height:1.3;letter-spacing:-.01em}h1{font-size:1.75rem}h2{font-size:1.35rem;margin:0 0 .75rem}h3{font-size:1rem}hr{border:none;border-top:1px solid var(--line);margin:3rem 0}code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.875em;background:color-mix(in srgb,var(--fg) 7%,transparent);padding:.15em .4em;border-radius:3px}pre{background:color-mix(in srgb,var(--fg) 4%,transparent);border:1px solid var(--line);border-radius:4px;padding:1rem 1.25rem;overflow-x:auto;line-height:1.7}pre code{background:none;padding:0}blockquote{margin:1.5rem 0;padding-left:1.25rem;border-left:2px solid var(--line);color:var(--muted)}.kicker{margin:0 0 1rem;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.7rem;font-weight:400;letter-spacing:.3em;text-transform:uppercase;color:var(--muted)}.site-header{position:sticky;top:0;z-index:100;background:transparent;border-bottom:1px solid transparent;transition:background-color .35s ease,border-color .35s ease}.header-inner{max-width:calc(var(--wide) + 3rem);margin:0 auto;padding:2.5rem 1.5rem;display:flex;justify-content:space-between;align-items:center;transition:max-width .5s cubic-bezier(.22,1,.36,1),padding .5s cubic-bezier(.22,1,.36,1)}.site-header.stuck{background:color-mix(in srgb,var(--bg) 82%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom-color:var(--line)}.site-header.stuck .header-inner{max-width:100vw;padding-top:1rem;padding-bottom:1rem}@media(prefers-reduced-motion:reduce){.site-header,.header-inner{transition:none}}.site-header .brand{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.8rem;font-weight:600;letter-spacing:.3em;text-transform:uppercase;text-decoration:none}.site-header nav{display:flex;gap:1.5rem;align-items:center;font-size:.8rem;letter-spacing:.15em}.site-header nav a{text-decoration:none;color:var(--muted)}.site-header nav a:hover{color:var(--fg)}.icon-link{display:inline-flex;color:var(--muted)}.icon-link:hover{color:var(--fg)}.icon-link svg{width:16px;height:16px;fill:currentColor;display:block}.theme-toggle{background:none;border:none;padding:0;margin:0;font-size:1rem;line-height:1;color:var(--muted);cursor:pointer}.theme-toggle:hover{color:var(--fg)}.site-footer{max-width:var(--max);margin:0 auto;padding:2.5rem 1.5rem 3.5rem;border-top:1px solid var(--line);display:flex;justify-content:center;align-items:center;gap:1.1rem;font-size:.8rem;letter-spacing:.1em;color:var(--muted)}.hero{padding:16vh 0 12vh;text-align:center}.hero h1{margin:0;font-size:clamp(1.25rem,6.5vw,3.25rem);line-height:1.2;letter-spacing:.02em;white-space:nowrap}.hero .sub{max-width:30em;margin:2rem auto 0;color:var(--muted)}.section{padding:4.5rem 0 0;text-align:center}.section>.body{text-align:left;margin-top:2rem}.section-lede{margin:0;color:var(--muted)}.arch-wrap{width:min(var(--wide),100vw - 3rem);position:relative;left:50%;transform:translate(-50%);margin-top:2rem}.arch{display:block;width:100%;height:auto}.d-bg{fill:var(--bg);stroke:var(--line)}.d-panel{fill:var(--panel)}.d-box{fill:var(--panel2);stroke:var(--line)}.d-strip{fill:var(--panel2);stroke:var(--muted)}.d-title{fill:var(--fg);font-weight:700}.d-text{fill:var(--fg);font-weight:600}.d-sub{fill:var(--muted)}.d-faint{fill:var(--muted);opacity:.7}.d-kick{font-family:ui-monospace,Menlo,monospace;letter-spacing:2.5px}.d-line{stroke:var(--muted);fill:none}.d-dash{stroke:var(--muted);fill:none;stroke-dasharray:5 5;opacity:.8}.d-icon{stroke:var(--muted);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}.d-marker{fill:var(--muted)}.p-green{stroke:var(--acc-green);stroke-opacity:.55}.p-blue{stroke:var(--acc-blue);stroke-opacity:.55}.p-purple{stroke:var(--acc-purple);stroke-opacity:.55}.k-green{fill:var(--acc-green)}.k-blue{fill:var(--acc-blue)}.k-purple{fill:var(--acc-purple)}.d-flow{fill:var(--acc-green)}@media(prefers-reduced-motion:reduce){.d-flow{display:none}}.item-list{list-style:none;margin:0;padding:0}.item-list li{display:flex;gap:1.25rem;padding:.7rem 0;border-bottom:1px solid var(--line)}.item-list li:first-child{border-top:1px solid var(--line)}.item-list .label{flex:none;width:6.5em;color:var(--muted);font-size:.9rem}.post-list{list-style:none;margin:0;padding:0}.post-list li{display:flex;gap:1.5rem;align-items:baseline;padding:.7rem 0}.post-list time{flex:none;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.75rem;letter-spacing:.05em;color:var(--muted)}.post-list a{text-decoration:none}.post-list a:hover{text-decoration:underline;text-underline-offset:.25em}.more-link{display:inline-block;margin-top:1.5rem;font-size:.85rem;letter-spacing:.1em;color:var(--muted);text-decoration:none}.more-link:hover{color:var(--fg)}.page-header{padding:5rem 0 2rem;text-align:center}.page-header h1{margin:0;font-size:clamp(1.8rem,5vw,2.5rem)}.post-header{padding:5rem 0 0;text-align:center}.post-header h1{margin:0;font-size:clamp(1.6rem,4.5vw,2.25rem)}.post-header .kicker{margin-bottom:1.25rem}.post-body{margin-top:3.5rem}.post-body img{max-width:100%}.back-link{display:block;margin-top:4.5rem;text-align:center;font-size:.85rem;letter-spacing:.1em;color:var(--muted);text-decoration:none}.back-link:hover{color:var(--fg)}