.rp-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
  padding: 8px 10px;
  margin: 0 0 8px;
  border-bottom: 1px solid var(--mz-border);
  background: color-mix(in srgb, var(--mz-bg) 88%, transparent);
  backdrop-filter: blur(10px);
}

.rp-nav__brand {
  font: 600 11px/1 var(--mz-mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mz-accent);
  padding: 6px 10px 6px 2px;
  margin-right: auto;
  white-space: nowrap;
}

.rp-nav a {
  font: 500 11.5px/1 var(--mz-mono);
  letter-spacing: .04em;
  color: var(--mz-text-muted);
  text-decoration: none;
  padding: 6px 9px;
  border-radius: var(--mz-radius-sm);
  border: 1px solid transparent;
  white-space: nowrap;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}

.rp-nav a:hover,
.rp-nav a:focus-visible { color: var(--mz-text-strong); border-color: var(--mz-border); background: var(--mz-surface); }
.rp-nav a[aria-current="true"] { color: var(--mz-accent); border-color: var(--mz-accent); }

.rp-hero { text-align: center; }
.rp-hero .mz-title { margin: 4px 0 6px; letter-spacing: -.02em; }
.rp-hero__title { cursor: default; }
.rp-hero__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 18px;
}

.rp-sec { scroll-margin-top: 64px; padding-top: 26px; }
.rp-sec__num {
  font: 600 11px/1 var(--mz-mono);
  color: var(--mz-accent);
  letter-spacing: .18em;
}
.rp-h2-row { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.rp-h2-row .mz-h2 { flex: 1 1 auto; }

.rp-features {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  margin: var(--mz-gap) 0;
}

.rp-feat {
  border: 1px solid var(--mz-border);
  border-radius: var(--mz-radius);
  background: var(--mz-surface);
  overflow: hidden;
  transition: border-color .2s ease, transform .2s ease;
}
.rp-feat:hover { border-color: color-mix(in srgb, var(--mz-accent) 55%, var(--mz-border)); }
.rp-feat[open] { border-color: var(--mz-accent); }
.rp-feat[hidden] { display: none; }

.rp-feat > summary {
  list-style: none;
  cursor: pointer;
  padding: 13px 15px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
}
.rp-feat > summary::-webkit-details-marker { display: none; }
.rp-feat > summary:focus-visible { outline: 2px solid var(--mz-accent); outline-offset: -2px; }

.rp-feat__id {
  font: 700 12px/1 var(--mz-mono);
  color: var(--mz-bg);
  background: var(--mz-text-muted);
  border-radius: var(--mz-radius-sm);
  padding: 5px 7px;
  min-width: 30px;
  text-align: center;
}
.rp-feat--core   .rp-feat__id { background: var(--mz-info); }
.rp-feat--deep   .rp-feat__id { background: var(--mz-special); }
.rp-feat--agent  .rp-feat__id { background: var(--mz-accent); }
.rp-feat--infra  .rp-feat__id { background: var(--mz-ok); }

.rp-feat__name { font-weight: 600; color: var(--mz-text-strong); line-height: 1.3; }
.rp-feat__sub  { display: block; font: 400 11.5px/1.4 var(--mz-mono); color: var(--mz-text-muted); margin-top: 3px; }
.rp-feat__chev { color: var(--mz-text-muted); font: 400 13px/1 var(--mz-mono); transition: transform .2s ease; }
.rp-feat[open] .rp-feat__chev { transform: rotate(90deg); color: var(--mz-accent); }

.rp-feat__body { padding: 0 15px 15px; border-top: 1px solid var(--mz-border-soft); margin-top: 2px; padding-top: 13px; }
.rp-feat__body p { margin: 0 0 10px; }
.rp-feat__body p:last-child { margin-bottom: 0; }

.rp-eps { display: flex; flex-direction: column; gap: 5px; margin: 0 0 11px; }
.rp-ep {
  font: 400 11.5px/1.45 var(--mz-mono);
  color: var(--mz-text);
  background: var(--mz-surface-alt);
  border: 1px solid var(--mz-border-soft);
  border-radius: var(--mz-radius-sm);
  padding: 5px 8px;
  overflow-x: auto;
  white-space: nowrap;
}
.rp-ep b { color: var(--mz-ok); font-weight: 600; margin-right: 6px; }
.rp-ep--post b { color: var(--mz-warn); }

.rp-loc { display: flex; align-items: center; gap: 8px; margin-top: 11px; }
.rp-loc__bar { flex: 1; height: 5px; border-radius: 3px; background: var(--mz-surface-alt); overflow: hidden; display: flex; }
.rp-loc__main { background: var(--mz-accent); }
.rp-loc__test { background: var(--mz-ok); }
.rp-loc__txt  { font: 400 10.5px/1 var(--mz-mono); color: var(--mz-text-muted); white-space: nowrap; }

.rp-legend { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; font: 400 11.5px/1 var(--mz-mono); color: var(--mz-text-muted); margin: 10px 0 0; }
.rp-legend span { display: inline-flex; align-items: center; gap: 6px; }
.rp-dot { width: 9px; height: 9px; border-radius: 2px; display: inline-block; }

.rp-search {
  font: 400 12.5px/1 var(--mz-mono);
  color: var(--mz-text-strong);
  background: var(--mz-bg);
  border: 1px solid var(--mz-border);
  border-radius: var(--mz-radius-sm);
  padding: 8px 10px;
  min-width: 200px;
}
.rp-search:focus-visible { outline: 2px solid var(--mz-accent); outline-offset: 1px; }

.rp-count { font: 400 11px/1 var(--mz-mono); color: var(--mz-text-muted); }

.rp-figure {
  position: relative;
  border: 1px solid var(--mz-border);
  border-radius: var(--mz-radius);
  background: var(--mz-surface);
  padding: 18px;
  margin: var(--mz-gap) 0;
  isolation: isolate;
  overflow: hidden;
}
.rp-figure > *:not(canvas) { position: relative; z-index: 1; }
.rp-figure svg { display: block; width: 100%; height: auto; }
.rp-figure__cap {
  font: 400 11.5px/1.5 var(--mz-mono);
  color: var(--mz-text-muted);
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--mz-border-soft);
}
.rp-figure__scroll { overflow-x: auto; }
.rp-figure__scroll > svg { min-width: 640px; }

.d-box  { fill: var(--mz-surface-alt); stroke: var(--mz-border); stroke-width: 1; }
.d-box--accent  { stroke: var(--mz-accent); }
.d-box--info    { stroke: var(--mz-info); }
.d-box--ok      { stroke: var(--mz-ok); }
.d-box--warn    { stroke: var(--mz-warn); }
.d-box--special { stroke: var(--mz-special); }
.d-t    { fill: var(--mz-text-strong); font: 600 12px var(--mz-font); }
.d-t--sm{ fill: var(--mz-text); font: 400 10.5px var(--mz-mono); }
.d-t--xs{ fill: var(--mz-text-muted); font: 400 9.5px var(--mz-mono); }
.d-t--mid { text-anchor: middle; }
.d-line { stroke: var(--mz-border); stroke-width: 1.5; fill: none; }
.d-line--accent { stroke: var(--mz-accent); }
.d-line--ok     { stroke: var(--mz-ok); }
.d-line--info   { stroke: var(--mz-info); }
.d-line--dash   { stroke-dasharray: 4 4; }
.d-fill-accent  { fill: var(--mz-accent); }
.d-fill-ok      { fill: var(--mz-ok); }
.d-fill-info    { fill: var(--mz-info); }
.d-fill-warn    { fill: var(--mz-warn); }
.d-fill-special { fill: var(--mz-special); }
.d-fill-muted   { fill: var(--mz-text-muted); }

.d-flow { stroke-dasharray: 5 9; animation: d-dash 1.6s linear infinite; }
@keyframes d-dash { to { stroke-dashoffset: -28; } }
@media (prefers-reduced-motion: reduce) { .d-flow { animation: none; } }

.rp-timeline { list-style: none; margin: var(--mz-gap) 0; padding: 0 0 0 22px; border-left: 1px solid var(--mz-border); }
.rp-timeline li { position: relative; padding: 0 0 18px 14px; }
.rp-timeline li::before {
  content: "";
  position: absolute;
  left: -27px; top: 6px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--mz-accent);
  box-shadow: 0 0 0 3px var(--mz-bg);
}
.rp-timeline__date { font: 600 10.5px/1 var(--mz-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mz-text-muted); display: block; margin-bottom: 4px; }
.rp-timeline__t { color: var(--mz-text-strong); font-weight: 600; }

.rp-split { display: grid; gap: var(--mz-gap); grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); margin: var(--mz-gap) 0; }
.rp-kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; font-size: 13.5px; }
.rp-kv dt { font: 600 10.5px/1.6 var(--mz-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mz-text-muted); }
.rp-kv dd { margin: 0; color: var(--mz-text-strong); }

.rp-fx-note { font: 400 10.5px/1.5 var(--mz-mono); color: var(--mz-text-muted); margin-top: 8px; }
.rp-fx-note code { color: var(--mz-special); }

.rp-card-fx { position: relative; isolation: isolate; overflow: hidden; }
.rp-card-fx > *:not(canvas) { position: relative; z-index: 1; }

.rp-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: var(--mz-gap) 0; }

.rp-bignum { font: 700 clamp(30px, 5vw, 46px)/1 var(--mz-mono); color: var(--mz-text-strong); letter-spacing: -.02em; }

.rp-mono-list { font: 400 12px/1.9 var(--mz-mono); color: var(--mz-text); margin: 0; padding-left: 18px; }
.rp-mono-list li::marker { color: var(--mz-accent); }

@media (max-width: 640px) {
  .rp-nav__brand { display: none; }
  .rp-features { grid-template-columns: 1fr; }
}