:root{
  --bg:#0a0b0e;
  --bg-soft:#101318;
  --panel:#13171e;
  --panel-2:#171c25;
  --line:#242b36;
  --line-soft:#1c222c;
  --ink:#e6e9ef;
  --ink-dim:#a3adbd;
  --ink-faint:#6f7b8d;
  --acc:#7ee787;
  --acc-2:#79c0ff;
  --acc-3:#d2a8ff;
  --warn:#f0a35e;
  --red:#ff7b72;
  --pink:#ff9bce;
  --radius:14px;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,"JetBrains Mono","Fira Code",Menlo,Consolas,monospace;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --maxw:780px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(60rem 40rem at 78% -10%, rgba(121,192,255,.10), transparent 60%),
    radial-gradient(50rem 34rem at 8% 8%, rgba(126,231,135,.07), transparent 60%),
    radial-gradient(46rem 34rem at 50% 108%, rgba(210,168,255,.07), transparent 60%)}
::selection{background:rgba(126,231,135,.28)}

#progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:60;
  background:linear-gradient(90deg,var(--acc),var(--acc-2) 55%,var(--acc-3));
  box-shadow:0 0 14px rgba(121,192,255,.6);transition:width .12s linear}

/* ---------- layout ---------- */
.shell{position:relative;z-index:1;display:grid;grid-template-columns:262px minmax(0,1fr);
  max-width:1220px;margin:0 auto;padding:0 24px}
nav.toc{position:sticky;top:0;align-self:start;height:100vh;padding:34px 26px 30px 0;
  display:flex;flex-direction:column;gap:5px;overflow:auto;scrollbar-width:thin}
.brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;text-decoration:none;color:inherit}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--acc);
  box-shadow:0 0 0 4px rgba(126,231,135,.14);flex:none}
.brand b{font-size:14px;letter-spacing:.02em;display:block}
.brand span span{display:block;font-size:11px;color:var(--ink-faint);letter-spacing:.06em;text-transform:uppercase}

/* part switcher */
.partnav{display:flex;flex-direction:column;gap:3px;margin-bottom:16px;
  padding-bottom:16px;border-bottom:1px solid var(--line-soft)}
.partnav a{display:flex;gap:9px;align-items:center;text-decoration:none;color:var(--ink-dim);
  font-size:13.5px;padding:8px 10px;border-radius:9px;border:1px solid transparent;
  transition:background .15s,color .15s,border-color .15s}
.partnav a em{font-style:normal;font-family:var(--mono);font-size:10px;letter-spacing:.06em;
  color:var(--ink-faint);border:1px solid var(--line);border-radius:5px;padding:2px 5px;flex:none}
.partnav a:hover{background:rgba(255,255,255,.035);color:var(--ink)}
.partnav a.on{background:rgba(126,231,135,.09);border-color:rgba(126,231,135,.3);color:var(--ink)}
.partnav a.on em{color:var(--acc);border-color:rgba(126,231,135,.4)}

.toclist{display:flex;flex-direction:column;gap:2px}
.toclist a{display:flex;gap:9px;align-items:baseline;text-decoration:none;color:var(--ink-faint);
  font-size:13px;padding:5px 10px;border-radius:8px;border-left:2px solid transparent;
  transition:color .15s,background .15s,border-color .15s;line-height:1.35}
.toclist a em{font-style:normal;font-family:var(--mono);font-size:10.5px;opacity:.55;min-width:15px;flex:none}
.toclist a:hover{color:var(--ink-dim);background:rgba(255,255,255,.03)}
.toclist a.active{color:var(--ink);background:rgba(126,231,135,.07);border-left-color:var(--acc)}
nav.toc .spacer{flex:1;min-height:18px}
nav.toc .foot{font-size:11.5px;color:#4d5666;line-height:1.5;padding:0 10px}

main{padding:0 0 130px;min-width:0}
section{padding:58px 0;scroll-margin-top:24px;max-width:var(--maxw)}
section+section{border-top:1px solid var(--line-soft)}

h1{font-size:clamp(2rem,5vw,3.05rem);line-height:1.08;letter-spacing:-.03em;margin:0 0 16px;font-weight:700}
h2{font-size:clamp(1.45rem,3.2vw,1.95rem);line-height:1.2;letter-spacing:-.022em;margin:0 0 8px;font-weight:650}
h3{font-size:1.02rem;letter-spacing:-.008em;margin:30px 0 8px;font-weight:640}
h4{font-size:.94rem;margin:22px 0 6px;font-weight:620;color:var(--ink)}
p{margin:0 0 15px;color:var(--ink-dim)}
p.lead{font-size:1.14rem;color:var(--ink);line-height:1.6}
strong{color:var(--ink);font-weight:620}
em.i{font-style:italic}
code{font-family:var(--mono);font-size:.855em;background:rgba(255,255,255,.055);
  border:1px solid var(--line-soft);padding:.1em .38em;border-radius:5px;color:#cfe3ff;
  overflow-wrap:anywhere}
a{color:var(--acc-2)}
ul,ol{margin:0 0 15px;padding-left:22px;color:var(--ink-dim)}
li{margin:5px 0}
li::marker{color:var(--ink-faint)}
hr{border:none;border-top:1px solid var(--line-soft);margin:30px 0}

.kicker{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11.5px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:13px}
.kicker::before{content:"";width:22px;height:1px;background:var(--line);display:block}

.hero{padding-top:66px;border-top:none;max-width:840px}
.hero-sub{font-size:1.14rem;color:var(--ink-dim);max-width:62ch;margin-bottom:24px}
.hero-sub b{color:var(--ink);font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.chip{font-family:var(--mono);font-size:11.5px;color:var(--ink-dim);background:var(--panel);
  border:1px solid var(--line);border-radius:999px;padding:5px 11px}
.chip b{color:var(--acc);font-weight:600}
.srcline{font-family:var(--mono);font-size:12px;color:var(--ink-faint);
  border-left:2px solid var(--line);padding:4px 0 4px 12px;margin:0 0 22px}
.srcline b{color:var(--ink-dim);font-weight:500}

/* ---------- panels / callouts ---------- */
.panel{background:linear-gradient(180deg,var(--panel),var(--bg-soft));
  border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin:20px 0}
.callout{border-left:2px solid var(--acc-2);background:rgba(121,192,255,.05);
  padding:12px 16px;border-radius:0 10px 10px 0;margin:16px 0}
.callout p{margin:0;font-size:14.5px;color:var(--ink-dim)}
.callout p+p{margin-top:9px}
.callout.g{border-color:var(--acc);background:rgba(126,231,135,.05)}
.callout.w{border-color:var(--warn);background:rgba(240,163,94,.05)}

/* ---------- audit notes ---------- */
.audit{border:1px solid var(--line);border-radius:12px;margin:22px 0;overflow:hidden;
  background:var(--panel)}
.audit>summary{list-style:none;cursor:pointer;padding:13px 16px;display:flex;gap:11px;
  align-items:flex-start;transition:background .15s}
.audit>summary::-webkit-details-marker{display:none}
.audit>summary:hover{background:rgba(255,255,255,.028)}
.audit>summary:focus-visible{outline:2px solid var(--acc-2);outline-offset:-2px}
.audit .badge{font-family:var(--mono);font-size:9.5px;letter-spacing:.09em;text-transform:uppercase;
  padding:4px 7px;border-radius:5px;flex:none;margin-top:1px;font-weight:700;white-space:nowrap}
.audit .stitle{flex:1;min-width:0;font-size:14.5px;font-weight:600;color:var(--ink);line-height:1.4}
.audit .stitle span{display:block;font-weight:400;font-size:13px;color:var(--ink-faint);margin-top:2px}
.audit .chev{color:var(--ink-faint);font-size:12px;margin-top:4px;transition:transform .2s;flex:none}
.audit[open] .chev{transform:rotate(90deg)}
.audit .inner{padding:2px 16px 16px;border-top:1px solid var(--line-soft);margin-top:2px}
.audit .inner>*:first-child{margin-top:13px}
.audit dl{margin:0;display:flex;flex-direction:column;gap:11px}
.audit dl>div{display:grid;grid-template-columns:88px minmax(0,1fr);gap:12px;align-items:baseline}
.audit dt{font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--ink-faint);padding-top:3px}
.audit dd{margin:0;font-size:14.5px;color:var(--ink-dim);min-width:0}
.audit dd code{font-size:.87em}

.audit.over{border-color:rgba(240,163,94,.3)}
.audit.over .badge{background:rgba(240,163,94,.14);color:var(--warn);border:1px solid rgba(240,163,94,.32)}
.audit.over dt{color:#a8825f}
.audit.under{border-color:rgba(126,231,135,.28)}
.audit.under .badge{background:rgba(126,231,135,.12);color:var(--acc);border:1px solid rgba(126,231,135,.3)}
.audit.under dt{color:#6f9b76}
.audit.bug{border-color:rgba(255,123,114,.34)}
.audit.bug .badge{background:rgba(255,123,114,.14);color:var(--red);border:1px solid rgba(255,123,114,.34)}
.audit.bug dt{color:#a8746f}

/* ---------- code ---------- */
pre{margin:18px 0;background:#0d1116;border:1px solid var(--line);border-radius:12px;
  padding:15px 17px;overflow-x:auto;font-family:var(--mono);font-size:12.8px;line-height:1.7;
  color:#d8e2f0;-webkit-overflow-scrolling:touch}
pre code{background:none;border:none;padding:0;font-size:inherit;color:inherit;overflow-wrap:normal}
.tok-k{color:var(--acc-3)}
.tok-s{color:var(--acc)}
.tok-n{color:var(--warn)}
.tok-c{color:#5f6b7d;font-style:italic}
.tok-f{color:var(--acc-2)}
.tok-t{color:var(--pink)}

/* ---------- note card (dl grid) ---------- */
.note{font-family:var(--mono);font-size:13px;background:#0d1116;border:1px solid var(--line);
  border-radius:var(--radius);margin:22px 0;overflow:hidden}
.note-hd{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 16px;
  border-bottom:1px solid var(--line-soft);background:rgba(255,255,255,.022);font-size:10.5px;
  letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint)}
.note-hd .dots{display:flex;gap:5px;flex:none}
.note-hd .dots i{width:8px;height:8px;border-radius:50%;background:#2b3340;display:block}
.note dl{margin:0;padding:14px 16px;display:grid;grid-template-columns:max-content minmax(0,1fr);
  gap:7px 14px;align-items:baseline}
.note dt{color:#8b98ab}
.note dt::after{content:":"}
.note dd{margin:0;color:#d8e2f0;line-height:1.5;min-width:0;overflow-wrap:anywhere}
.note .s{color:var(--acc)}
.note .t{color:var(--acc-3)}
.note .f{color:var(--acc-2)}
.note .n{color:var(--warn)}
.note .cm{color:var(--pink);opacity:.92;white-space:nowrap}

/* ---------- cards ---------- */
.grid{display:grid;gap:12px;margin:16px 0}
.grid.k4{grid-template-columns:repeat(auto-fit,minmax(165px,1fr))}
.grid.k3{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.grid.k2{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 15px;
  transition:transform .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-2px);border-color:#37414f}
.card h4{margin:0 0 4px;font-family:var(--mono);font-size:12.5px;letter-spacing:.02em;font-weight:600}
.card p{margin:0;font-size:13.5px;line-height:1.5;color:var(--ink-faint)}
.card.c1 h4{color:var(--acc)} .card.c2 h4{color:var(--acc-2)}
.card.c3 h4{color:var(--warn)} .card.c4 h4{color:var(--acc-3)}

/* ---------- tables ---------- */
.tbl{overflow-x:auto;margin:18px 0;border:1px solid var(--line);border-radius:12px;
  -webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;font-size:14px;min-width:420px}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line-soft);vertical-align:top}
th{font-family:var(--mono);font-size:10.5px;letter-spacing:.09em;text-transform:uppercase;
  color:var(--ink-faint);background:rgba(255,255,255,.022);font-weight:600;white-space:nowrap}
td{color:var(--ink-dim)}
tr:last-child td{border-bottom:none}
td code{font-size:.85em}
td b{color:var(--ink)}

/* ---------- tier ladder ---------- */
.tiers{display:flex;flex-direction:column;gap:8px;margin:18px 0}
.tier{display:grid;grid-template-columns:34px 1fr;gap:13px;align-items:center;
  border:1px solid var(--line);border-radius:11px;padding:12px 14px;background:var(--panel)}
.tier .lv{font-family:var(--mono);font-size:11px;font-weight:700;width:34px;height:34px;
  border-radius:9px;display:grid;place-items:center;color:var(--bg)}
.tier b{display:block;font-size:14px;font-weight:620}
.tier span{display:block;font-size:13px;color:var(--ink-faint);margin-top:1px}
.tier.t1 .lv{background:var(--acc)} .tier.t2 .lv{background:var(--acc-2)}
.tier.t3 .lv{background:var(--acc-3)} .tier.t4 .lv{background:#5f6b7d}

/* ---------- searches accordion ---------- */
.searches{display:flex;flex-direction:column;gap:10px;margin:24px 0}
.srch{border:1px solid var(--line);border-radius:12px;background:var(--panel);overflow:hidden}
.srch>button{all:unset;display:flex;gap:14px;align-items:flex-start;width:100%;box-sizing:border-box;
  padding:15px 18px;cursor:pointer;transition:background .15s}
.srch>button:hover{background:rgba(255,255,255,.025)}
.srch>button:focus-visible{outline:2px solid var(--acc-2);outline-offset:-2px}
.srch .num{font-family:var(--mono);font-size:11px;color:var(--bg);background:var(--ink-faint);
  width:20px;height:20px;border-radius:6px;display:grid;place-items:center;flex:none;margin-top:2px;
  font-weight:700;transition:background .18s}
.srch[data-open="1"] .num{background:var(--acc)}
.srch .hd{flex:1;min-width:0}
.srch .hd b{display:block;font-size:15px;font-weight:620;letter-spacing:-.01em}
.srch .hd span{display:block;font-size:13.5px;color:var(--ink-faint);margin-top:1px}
.srch .caret{color:var(--ink-faint);font-size:12px;margin-top:5px;transition:transform .22s}
.srch[data-open="1"] .caret{transform:rotate(90deg);color:var(--acc)}
.srch .body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease}
.srch[data-open="1"] .body{grid-template-rows:1fr}
.srch .body>div{overflow:hidden}
.srch .body .inner{padding:2px 18px 18px 52px;border-top:1px solid transparent}
.srch[data-open="1"] .body .inner{border-top-color:var(--line-soft);padding-top:14px}
.srch .body p{font-size:14.5px;margin:0 0 12px}
.srch .body p:last-child{margin-bottom:0}

.trigram{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 14px;align-items:center}
.trigram .w{font-family:var(--mono);font-size:13px;color:var(--ink);background:var(--panel-2);
  border:1px solid var(--line);padding:3px 9px;border-radius:6px}
.trigram .arrow{color:var(--ink-faint);font-size:12px}
.trigram .g{font-family:var(--mono);font-size:12.5px;color:var(--acc-2);
  background:rgba(121,192,255,.09);border:1px solid rgba(121,192,255,.22);padding:3px 8px;
  border-radius:6px;animation:pop .3s backwards}
@keyframes pop{from{opacity:0;transform:translateY(4px) scale(.9)}}

/* ---------- RRF demo ---------- */
.demo{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);
  margin:24px 0;overflow:hidden}
.demo-hd{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding:14px 18px;border-bottom:1px solid var(--line-soft);background:var(--bg-soft)}
.demo-hd b{font-size:13.5px;letter-spacing:-.01em}
.demo-hd small{display:block;color:var(--ink-faint);font-size:12px;font-weight:400;margin-top:1px}
.toggle{display:flex;gap:6px;flex-wrap:wrap}
.toggle button{all:unset;font-family:var(--mono);font-size:11px;padding:5px 10px;border-radius:999px;
  border:1px solid var(--line);color:var(--ink-faint);cursor:pointer;transition:all .15s;user-select:none}
.toggle button[aria-pressed="true"]{color:var(--bg);background:var(--acc);border-color:var(--acc);font-weight:700}
.toggle button:focus-visible{outline:2px solid var(--acc-2);outline-offset:2px}
.demo-body{display:grid;grid-template-columns:1fr 1fr}
.lists{padding:16px 18px;border-right:1px solid var(--line-soft);display:flex;flex-direction:column;gap:14px}
.lst h5{margin:0 0 6px;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-faint)}
.lst.off{opacity:.28}
.lst ol{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:3px}
.lst li{display:flex;gap:8px;align-items:center;font-size:12.5px;color:var(--ink-dim);font-family:var(--mono);margin:0}
.lst li i{font-style:normal;color:var(--ink-faint);font-size:10.5px;width:12px}
.lst li .sw{width:7px;height:7px;border-radius:2px;flex:none}
.fused{padding:16px 18px;display:flex;flex-direction:column;gap:7px}
.fused h5{margin:0 0 6px;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-faint)}
.row{display:grid;grid-template-columns:16px 1fr auto;gap:9px;align-items:center}
.row .rk{font-family:var(--mono);font-size:11px;color:var(--ink-faint);text-align:right}
.row .bar{position:relative;height:26px;border-radius:6px;background:var(--panel-2);
  border:1px solid var(--line-soft);overflow:hidden;display:flex;align-items:center}
.row .fill{position:absolute;inset:0 auto 0 0;border-radius:5px;opacity:.24;
  transition:width .4s cubic-bezier(.2,.7,.3,1)}
.row .lbl{position:relative;font-family:var(--mono);font-size:11.5px;color:var(--ink);
  padding-left:9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row .sc{font-family:var(--mono);font-size:11px;color:var(--ink-faint);min-width:52px;text-align:right}
.row.win .lbl{color:var(--acc)}
.demo-ft{padding:11px 18px;border-top:1px solid var(--line-soft);background:var(--bg-soft);
  font-size:12.5px;color:var(--ink-faint)}
.demo-ft b{color:var(--ink-dim);font-weight:600}
@media(max-width:760px){
  .demo-body{grid-template-columns:1fr}
  .lists{border-right:none;border-bottom:1px solid var(--line-soft)}
}

/* ---------- combineScore weight visualiser ---------- */
.wt{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);
  margin:22px 0;overflow:hidden}
.wt-rows{padding:14px 16px;display:flex;flex-direction:column;gap:9px}
.wt-row{display:grid;grid-template-columns:minmax(0,1fr) 116px 62px;gap:11px;align-items:center}
.wt-row .nm{font-family:var(--mono);font-size:12px;color:var(--ink-dim);min-width:0;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.wt-row .nm i{font-style:normal;color:var(--ink-faint);font-size:10.5px}
.wt-row .track{display:block;height:9px;border-radius:5px;background:var(--panel-2);
  border:1px solid var(--line-soft);overflow:hidden}
/* must be block: an inline span ignores width/height, leaving the bar invisible */
.wt-row .fillw{display:block;height:100%;min-width:2px;border-radius:4px;
  transition:width .4s cubic-bezier(.2,.7,.3,1)}
.wt-row .val{font-family:var(--mono);font-size:11px;color:var(--ink-faint);text-align:right}
.wt-row.mag .nm{color:var(--warn)}
.wt-ft{padding:11px 16px;border-top:1px solid var(--line-soft);background:var(--bg-soft);
  font-size:12.5px;color:var(--ink-faint)}
.wt-ft b{color:var(--ink-dim)}
.slider{display:flex;align-items:center;gap:11px;padding:12px 16px;
  border-bottom:1px solid var(--line-soft);background:var(--bg-soft);flex-wrap:wrap}
.slider label{font-family:var(--mono);font-size:11px;color:var(--ink-faint);
  letter-spacing:.06em;text-transform:uppercase}
.slider input[type=range]{flex:1;min-width:150px;accent-color:var(--acc);height:24px}
.slider output{font-family:var(--mono);font-size:12px;color:var(--acc);min-width:38px;text-align:right}

/* ---------- hop diagram ---------- */
.hops{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}
.hop{border:1px solid var(--line);border-radius:12px;padding:15px;background:var(--panel);text-align:center}
.hop h5{margin:0 0 10px;font-family:var(--mono);font-size:10.5px;letter-spacing:.09em;
  text-transform:uppercase;color:var(--ink-faint)}
.hop .big{font-family:var(--mono);font-size:30px;font-weight:700;line-height:1;margin-bottom:5px}
.hop .cap{font-size:12.5px;color:var(--ink-faint);line-height:1.45}
.hop.a{border-color:rgba(240,163,94,.3)}.hop.a .big{color:var(--warn)}
.hop.b{border-color:rgba(126,231,135,.3)}.hop.b .big{color:var(--acc)}
@media(max-width:520px){.hops{grid-template-columns:1fr}}

/* ---------- bench timeline ---------- */
.turns{display:flex;gap:4px;flex-wrap:wrap;margin:14px 0 8px}
.turns .tn{flex:1;min-width:26px;text-align:center;font-family:var(--mono);font-size:10px;
  padding:8px 2px;border-radius:6px;border:1px solid var(--line);color:var(--ink-faint);background:var(--panel)}
.turns .tn.show{background:rgba(126,231,135,.14);border-color:rgba(126,231,135,.45);color:var(--acc)}
.turns .tn.bench{background:rgba(240,163,94,.07);border-color:rgba(240,163,94,.2);color:#8a7460}
.turns .tn.back{background:rgba(121,192,255,.14);border-color:rgba(121,192,255,.45);color:var(--acc-2)}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--ink-faint);margin-top:4px}
.legend span{display:flex;align-items:center;gap:6px}
.legend i{width:9px;height:9px;border-radius:3px;display:block}

/* ---------- steps ---------- */
.steps{counter-reset:s;display:flex;flex-direction:column;gap:2px;margin:16px 0;padding:0}
/* NB: li must NOT be flex/grid — inline children (<code>, <strong>) would each
   become separate items and get dumped into the counter column. Absolute-position
   the marker instead and leave the content in normal inline flow. */
.steps li{list-style:none;position:relative;padding:9px 0 9px 31px;
  border-bottom:1px dashed var(--line-soft);font-size:14.5px;color:var(--ink-dim);
  margin:0;overflow-wrap:anywhere}
.steps li:last-child{border-bottom:none}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:11px;
  font-family:var(--mono);font-size:10.5px;color:var(--acc-2);
  border:1px solid rgba(121,192,255,.3);border-radius:5px;width:19px;height:19px;
  display:grid;place-items:center}

/* ---------- final quote ---------- */
.final{border-left:3px solid var(--acc);padding:22px 26px;
  background:linear-gradient(90deg,rgba(126,231,135,.07),rgba(126,231,135,0));
  border-radius:0 14px 14px 0;margin:22px 0 0}
.final p{font-size:1.12rem;line-height:1.62;color:var(--ink);margin:0}
.final p b{color:var(--acc);font-weight:600}

/* ---------- next-part link ---------- */
.nextp{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:34px 0 0;
  padding:17px 20px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);
  text-decoration:none;color:inherit;transition:border-color .18s,transform .18s}
.nextp:hover{border-color:rgba(126,231,135,.4);transform:translateY(-2px)}
.nextp .t{min-width:0}
.nextp .t em{font-style:normal;display:block;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:3px}
.nextp .t b{font-size:15.5px;font-weight:620;color:var(--ink)}
.nextp .arw{color:var(--acc);font-size:19px;flex:none}

footer{max-width:var(--maxw);padding:26px 0 0;border-top:1px solid var(--line-soft);
  color:#4d5666;font-size:12.5px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.3,1)}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- mobile ---------- */
.mnav{display:none}
@media(max-width:900px){
  .shell{grid-template-columns:1fr;padding:0 18px}
  nav.toc{display:none}
  main{padding-top:0;padding-bottom:96px}
  body{font-size:16px;line-height:1.6}
  section{padding:42px 0;scroll-margin-top:104px}
  .hero{padding-top:30px}
  h1{font-size:clamp(1.95rem,8.4vw,2.6rem)}
  p.lead{font-size:1.05rem}
  .hero-sub{font-size:1.04rem;margin-bottom:22px}
  h3{margin-top:26px}

  .mnav{display:block;position:sticky;top:0;z-index:50;margin:0 -18px;
    background:rgba(10,11,14,.92);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line-soft)}
  .mnav .parts{display:flex;gap:7px;padding:9px 18px 0;overflow-x:auto;scrollbar-width:none}
  .mnav .secs{display:flex;gap:7px;padding:8px 18px 9px;overflow-x:auto;scrollbar-width:none;
    overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;
    mask-image:linear-gradient(90deg,#000 calc(100% - 30px),transparent);
    -webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 30px),transparent)}
  .mnav .parts::-webkit-scrollbar,.mnav .secs::-webkit-scrollbar{display:none}
  .mnav a{flex:none;font-size:12.5px;text-decoration:none;color:var(--ink-faint);
    border:1px solid var(--line);padding:7px 13px;border-radius:999px;white-space:nowrap;
    background:var(--panel)}
  .mnav .parts a{font-family:var(--mono);font-size:11px;letter-spacing:.04em;text-transform:uppercase}
  .mnav .parts a.on{color:var(--bg);background:var(--acc-2);border-color:var(--acc-2);font-weight:700}
  .mnav .secs a.active{color:var(--bg);background:var(--acc);border-color:var(--acc);font-weight:600}
  .mnav .secs a:last-child{margin-right:24px}

  .srch>button{padding:14px 15px;gap:12px}
  .srch .hd b{font-size:14.5px}
  .srch .hd span{font-size:13px}
  .srch .body .inner{padding:2px 15px 16px 15px}
  .srch[data-open="1"] .body .inner{padding-top:13px}
  .toggle button{padding:9px 14px;font-size:12px}
  .demo-hd{padding:13px 15px}
  .lists,.fused,.demo-ft{padding-left:15px;padding-right:15px}
  .panel{padding:16px 15px}
  .final{padding:20px 18px}
  .grid.k4{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}
  .audit>summary{padding:13px 14px;gap:10px}
  .audit .inner{padding:2px 14px 15px}
  .audit dl>div{grid-template-columns:1fr;gap:2px}
  .audit dt{padding-top:0}
  .wt-row{grid-template-columns:minmax(0,1fr) 64px 54px;gap:8px}
  pre{font-size:12px;padding:13px 14px}
}
@media(max-width:560px){
  /* stack: label + value on one line, full-width bar beneath, so the
     "synthetic rank 1" vs "rank 5" distinction is never truncated away */
  .wt-row{grid-template-columns:minmax(0,1fr) auto;
    grid-template-areas:"nm val" "track track";gap:5px 10px}
  .wt-row .nm{grid-area:nm;white-space:normal;overflow:visible;text-overflow:clip;line-height:1.35}
  .wt-row .val{grid-area:val}
  .wt-row .track{grid-area:track}

  .note{font-size:12.5px}
  .note dl{grid-template-columns:minmax(0,1fr);gap:0;padding:12px 15px}
  .note dt{margin-top:12px;font-size:10.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-faint)}
  .note dt::after{content:""}
  .note dl>dt:first-of-type{margin-top:0}
  .note dd{margin-top:2px}
  .note .cm{white-space:normal;display:block;margin-top:3px}
}
@media(max-width:400px){
  .shell{padding:0 15px}
  .mnav{margin:0 -15px}
  .mnav .parts{padding-left:15px;padding-right:15px}
  .mnav .secs{padding-left:15px;padding-right:15px}
  .grid.k4{grid-template-columns:1fr 1fr}
  .turns .tn{min-width:0;font-size:9.5px;padding:7px 1px}
}