:root{--bg:#FAF8F4;--surface:#F1EDE5;--text:#1B1D22;--text-soft:#4E535C;--rule:#D3CCBE;--rule-strong:#A89F8C;--signal:#A53A26;--signal-soft:#F0DED8;--steel:#2F5560;--mono-bg:#EAE5DA}
@media (prefers-color-scheme:dark){:root{--bg:#13151A;--surface:#1B1E25;--text:#E8E6E1;--text-soft:#A0A5AE;--rule:#2C3038;--rule-strong:#474D57;--signal:#E0705A;--signal-soft:#2E1F1C;--steel:#7FAEBB;--mono-bg:#22262E}}
*{box-sizing:border-box}
html{color-scheme:light dark}
body{margin:0;background:var(--bg);color:var(--text);font-family:'Source Serif 4',Georgia,'Times New Roman',serif;font-size:18px;line-height:1.72;-webkit-text-size-adjust:100%}
.wrap{max-width:44rem;margin:0 auto;padding:1.6rem 1.4rem 5rem}
a{color:var(--steel);text-underline-offset:.15em}
a:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:2px}
nav.top{display:flex;flex-wrap:wrap;gap:.6rem 1.5rem;justify-content:space-between;align-items:baseline;font-family:'Archivo','Helvetica Neue',Arial,sans-serif;font-size:.9rem;padding-bottom:1.1rem;border-bottom:1px solid var(--rule);margin-bottom:3.2rem}
nav.top a{text-decoration:none}
nav.top .brand{font-weight:700;color:var(--text);letter-spacing:-.01em}
.langs{display:flex;gap:1.1rem}
.langs a{color:var(--text-soft);font-weight:500}
.langs a:hover{color:var(--text)}
.langs a[aria-current]{color:var(--text);box-shadow:0 2px 0 var(--signal)}
h1,h2,h3{font-family:'Archivo','Helvetica Neue',Arial,sans-serif}
h1{font-weight:700;font-size:clamp(2rem,7vw,3rem);line-height:1.06;letter-spacing:-.022em;margin:0 0 1.4rem;text-wrap:balance}
.hero h1{font-size:clamp(2.3rem,8.5vw,3.7rem);line-height:1.02;letter-spacing:-.03em;margin-bottom:2rem;max-width:13em}
.hero p{max-width:36rem}
.hero h2{border:0;margin:2rem 0 .3rem;padding:0}
.listhead{font-size:1rem;font-weight:600;color:var(--text-soft);border-top:0;padding-top:0;margin:4rem 0 0}
.index{list-style:none;margin:0;padding:0}
.index li{margin:0;padding:1.5rem 0 1.6rem;border-top:1px solid var(--rule)}
.index li:first-child{border-top:2px solid var(--text);margin-top:.7rem}
.index a{text-decoration:none;color:var(--text)}
.index a:hover .ititle{color:var(--signal)}
.ititle{font-family:'Archivo',sans-serif;font-weight:600;font-size:1.4rem;line-height:1.2;letter-spacing:-.015em;text-wrap:balance}
.isum{margin:.6rem 0 .5rem;color:var(--text-soft)}
.imeta{margin:0;font-family:'Archivo',sans-serif;font-size:.86rem;color:var(--text-soft)}
header.masthead{margin-bottom:3rem}
.kicker{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:.74rem;letter-spacing:.04em;color:var(--signal);margin:0 0 1.1rem}
.byline{font-family:'Archivo',sans-serif;font-size:.9rem;font-weight:500;color:var(--text-soft);margin:0 0 1.8rem}
.lede{font-size:1.2rem;line-height:1.6;border-left:3px solid var(--signal);padding-left:1.1rem;margin:0}
h2{font-weight:600;font-size:1.42rem;line-height:1.22;letter-spacing:-.012em;margin:3.4rem 0 1rem;padding-top:1.4rem;border-top:1px solid var(--rule)}
h3{font-weight:600;font-size:1.06rem;margin:2.2rem 0 .6rem}
.stage h2{display:flex;gap:.7rem;align-items:baseline}
.stage h2 .n{font-family:'JetBrains Mono',monospace;font-size:.8rem;font-weight:500;color:var(--signal);background:var(--signal-soft);border-radius:2px;padding:.15rem .4rem;flex:none;transform:translateY(-.15rem)}
p{margin:0 0 1.2rem}
code{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:.84em;background:var(--mono-bg);padding:.1em .3em;border-radius:3px;word-break:break-word}
ul,ol{margin:0 0 1.3rem;padding-left:1.3rem}
li{margin-bottom:.5rem}
li::marker{color:var(--rule-strong)}
strong{font-weight:600}
.note{background:var(--surface);border-left:3px solid var(--rule-strong);padding:1.1rem 1.2rem .1rem;margin:1.8rem 0;font-size:.98rem}
.note h3{margin-top:0}
.tablewrap{overflow-x:auto;margin:1.6rem 0 2rem}
table{border-collapse:collapse;width:100%;min-width:32rem;font-family:'Archivo',sans-serif;font-size:.92rem;line-height:1.5}
th{text-align:left;font-weight:600;border-bottom:2px solid var(--rule-strong);padding:.5rem .8rem .5rem 0}
td{vertical-align:top;border-bottom:1px solid var(--rule);padding:.7rem .8rem .7rem 0;color:var(--text-soft)}
td:first-child{color:var(--text);font-weight:500;width:38%}
.diagram{overflow-x:auto;background:var(--surface);border:1px solid var(--rule);padding:1rem;margin:1.6rem 0 1rem}
svg.seq{display:block;max-width:none;font-family:'Archivo',Arial,sans-serif;font-size:12.5px}
.seq text{fill:var(--text)}
.seq .dp{fill:var(--bg);stroke:var(--rule-strong)}
.seq .dn{fill:var(--signal-soft);stroke:var(--signal);stroke-width:.75}
.seq .dl{stroke:var(--rule-strong);stroke-dasharray:3 4}
.seq .da{stroke:var(--text);stroke-width:1.2}
.seq .dh{fill:var(--text)}
.caption{font-size:.92rem;color:var(--text-soft);margin-bottom:2rem}
.chain{counter-reset:chain;list-style:none;padding-left:0}
.chain li{counter-increment:chain;position:relative;padding-left:2.2rem;margin-bottom:.85rem}
.chain li::before{content:counter(chain);position:absolute;left:0;top:.18rem;font-family:'JetBrains Mono',monospace;font-size:.78rem;color:var(--signal);border:1px solid var(--signal);border-radius:50%;width:1.5rem;height:1.5rem;display:grid;place-items:center}
.fine{margin-top:3.5rem;padding-top:1.4rem;border-top:1px solid var(--rule);font-family:'Archivo',sans-serif;font-size:.88rem;color:var(--text-soft)}
.back{font-family:'Archivo',sans-serif;font-size:.95rem;font-weight:500;margin:2rem 0 0}
footer.site{margin-top:4.5rem;padding-top:1.3rem;border-top:1px solid var(--rule);font-family:'Archivo',sans-serif;font-size:.86rem;color:var(--text-soft);display:flex;flex-wrap:wrap;gap:.3rem 1.5rem;justify-content:space-between}
footer.site p{margin:0}
footer.site a{margin-left:1rem}
footer.site p:last-child a:first-child{margin-left:0}
@media (max-width:480px){body{font-size:17px}nav.top{margin-bottom:2.4rem}td:first-child{width:auto}}
.role{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:.78rem;letter-spacing:.03em;color:var(--signal);margin:0 0 1.2rem}
main section{margin-top:0}
.tline{font-family:'Archivo',sans-serif;font-weight:600;font-size:1.5rem;line-height:1.2;letter-spacing:-.018em;margin:.7rem 0 1rem;padding-top:1.5rem;border-top:2px solid var(--text);text-wrap:balance}
.work{margin:.7rem 0 0;border-top:2px solid var(--text)}
.work dt{font-family:'Archivo',sans-serif;font-weight:600;font-size:1.08rem;padding-top:1.2rem}
.work dt a{color:var(--text);text-decoration-color:var(--rule-strong)}
.work dt a:hover{color:var(--signal)}
.work dd{margin:.25rem 0 0;padding-bottom:1.2rem;border-bottom:1px solid var(--rule);color:var(--text-soft)}
.cred{list-style:none;padding:0;margin:.7rem 0 0;border-top:2px solid var(--text);font-family:'Archivo',sans-serif;font-size:.95rem}
.cred li{margin:0;padding:.75rem 0;border-bottom:1px solid var(--rule)}
.vf{font-size:.84rem;margin-left:.4rem;white-space:nowrap}
.more{font-family:'Archivo',sans-serif;font-weight:500;font-size:.95rem;margin:1.6rem 0 0}
.byline a{color:inherit;text-decoration-color:var(--rule-strong)}
.author{margin-top:2.5rem;background:var(--surface);border-left:3px solid var(--signal);padding:1.1rem 1.2rem .2rem}
.author h2{border:0;margin:0 0 .4rem;padding:0;font-size:1rem}
.author p{font-size:.98rem}