/* ═══════════════════════════════════════════════════════════════════════
   Swarmonic — design system
   Palette taken from Swarms itself: background #0a0a0a, brand red #EE0712
   (the colour of their mark), and the GitHub-dark syntax set their own
   docs render code in. Dark, engraved, terminal-adjacent. Serif for the
   argument, monospace for the evidence. Hairlines everywhere.
   ═══════════════════════════════════════════════════════════════════════ */

/* ── tokens ─────────────────────────────────────────────────────────── */
:root{
  --ink:      #0a0a0a;   /* swarms.ai page background, sampled */
  --ink-1:    #0e0e0f;
  --ink-2:    #141416;
  --ink-3:    #1b1b1e;

  --rule:     rgba(230,237,243,.10);
  --rule-2:   rgba(230,237,243,.055);
  --rule-3:   rgba(230,237,243,.19);

  --bone:     #e6edf3;   /* swarms' code foreground */
  --dim:      #9aa4ad;
  --faint:    #6e767e;
  --ghost:    #4b5157;

  --red:      #ee0712;   /* the brand red: their logo ring */
  --red-2:    #ff3a40;   /* lifted for text on near-black */
  --red-ink:  rgba(238,7,18,.12);
  --ok:       #6fcf97;   /* settled / verified */
  --bad:      #ff4d4d;   /* refused */

  /* syntax — swarms' own documentation palette */
  --syn-text: #e6edf3;
  --syn-key:  #ff7b72;
  --syn-str:  #a5d6ff;
  --syn-num:  #ffa657;
  --syn-alt:  #d2a8ff;
  --syn-com:  #8b949e;
  --syn-fn:   #79c0ff;

  --serif: 'Iowan Old Style','Palatino Linotype',Palatino,'Book Antiqua',Georgia,'Times New Roman',serif;
  --mono: ui-monospace,'SF Mono',SFMono-Regular,Menlo,Monaco,Consolas,'Liberation Mono',monospace;

  --wrap: 1240px;
  --gap: 28px;
  --r: 3px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ── reset ──────────────────────────────────────────────────────────── */
*,*::before,*::after{ box-sizing:border-box }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth }
body{
  margin:0;
  background:var(--ink);
  color:var(--bone);
  font-family:var(--serif);
  font-size:17px;
  line-height:1.66;
  font-synthesis-weight:none;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
/* paper grain — the engraved feel, at 2% opacity */
body::after{
  content:''; position:fixed; inset:0; z-index:9999; pointer-events:none; opacity:.028;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E");
}
img,canvas,svg{ display:block; max-width:100% }
h1,h2,h3,h4,p,ul,ol,dl,dd,figure,blockquote{ margin:0 }
ul,ol{ padding:0; list-style:none }
a{ color:inherit; text-decoration:none }
button,input,select,textarea{ font:inherit; color:inherit }
table{ border-collapse:collapse; width:100% }
::selection{ background:var(--red); color:var(--ink) }

.mono{ font-family:var(--mono); font-size:.86em; letter-spacing:-.01em }
.sr{ position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0 }
.skip{
  position:absolute; left:-9999px; top:0; z-index:1000;
  background:var(--red); color:var(--ink); padding:10px 18px; font-family:var(--mono); font-size:.8rem;
}
.skip:focus{ left:12px; top:12px }

.wrap{ width:100%; max-width:var(--wrap); margin-inline:auto; padding-inline:var(--gap) }

/* ── type ───────────────────────────────────────────────────────────── */
.h1{
  font-size:clamp(2.5rem,6.6vw,4.6rem);
  line-height:1.02; letter-spacing:-.028em; font-weight:400;
  margin:.35em 0 0;
}
.h1 em{ font-style:italic; color:var(--red) }
.h2{
  font-size:clamp(1.85rem,3.9vw,3rem);
  line-height:1.08; letter-spacing:-.022em; font-weight:400;
  margin:.18em 0 .5em;
}
.h2 em{ font-style:italic; color:var(--red) }
.h2--big{ font-size:clamp(2.1rem,4.8vw,3.6rem) }

.eyebrow{
  font-family:var(--mono); font-size:.68rem; letter-spacing:.24em; text-transform:uppercase;
  color:var(--faint); display:flex; align-items:center; gap:.6em;
}
.eyebrow .hi{ color:var(--red) }
.dot{
  width:5px; height:5px; border-radius:50%; background:var(--red); flex:none;
  box-shadow:0 0 0 0 rgba(238,7,18,.5); animation:pulse 3.4s var(--ease) infinite;
}
@keyframes pulse{
  0%,100%{ box-shadow:0 0 0 0 rgba(238,7,18,.42) }
  60%{ box-shadow:0 0 0 7px rgba(238,7,18,0) }
}

.lede{ font-size:clamp(1.02rem,1.5vw,1.17rem); color:var(--dim); margin:1.5em 0 0; max-width:60ch }
.lede b{ color:var(--bone); font-weight:600 }
.lede a{ color:var(--bone); border-bottom:1px solid var(--rule-3) }
.lede a:hover{ border-color:var(--red); color:var(--red) }
.sec__lede{ color:var(--dim); max-width:68ch; margin:0 0 2.6em; font-size:1.04rem }
.fineprint{ font-size:.8rem; color:var(--ghost); max-width:56ch; margin-top:2em; line-height:1.6 }

/* ── buttons ────────────────────────────────────────────────────────── */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.5em;
  padding:13px 24px; border:1px solid transparent; border-radius:var(--r);
  font-family:var(--mono); font-size:.76rem; letter-spacing:.1em; text-transform:uppercase;
  cursor:pointer; transition:all .22s var(--ease); white-space:nowrap; background:none;
}
.btn--red{ background:var(--red); color:#fff; font-weight:600; border-color:var(--red) }
.btn--red:hover{ box-shadow:0 6px 26px -10px rgba(238,7,18,.85) }
.btn--red:hover{ background:var(--red-2); border-color:var(--red-2); transform:translateY(-1px) }
.btn--line{ border-color:var(--rule-3); color:var(--bone) }
.btn--line:hover{ border-color:var(--red); color:var(--red) }
.btn--ghost{ border-color:var(--rule); color:var(--dim) }
.btn--ghost:hover{ border-color:var(--rule-3); color:var(--bone) }
.btn--sm{ padding:8px 14px; font-size:.68rem }
.btn:focus-visible{ outline:2px solid var(--red); outline-offset:2px }

.cta{ display:flex; flex-wrap:wrap; gap:12px; margin-top:2.2em }
.cta--center{ justify-content:center }

/* ── header ─────────────────────────────────────────────────────────── */
.top{
  position:sticky; top:0; z-index:200;
  background:rgba(8,9,10,.82); backdrop-filter:blur(14px) saturate(1.3);
}
.top__in{ display:flex; align-items:center; gap:26px; height:64px }
.top__rule{ height:1px; background:linear-gradient(90deg,transparent,var(--rule),transparent) }

.brand{ display:flex; align-items:baseline; gap:.5em; flex:none }
.brand__sigil{ font-size:1.3rem; color:var(--red); line-height:1 }
.brand__word{ font-size:1.02rem; letter-spacing:.01em }
.brand__sub{
  font-family:var(--mono); font-size:.6rem; letter-spacing:.2em; text-transform:uppercase; color:var(--ghost);
}

.nav{ display:flex; gap:clamp(13px,1.5vw,22px); margin-left:auto; min-width:0; flex-wrap:nowrap }
.nav a{
  font-family:var(--mono); font-size:clamp(.64rem,.62vw + .42rem,.72rem); letter-spacing:.06em; color:var(--dim);
  transition:color .2s var(--ease); position:relative; padding:4px 0;
}
.nav a::after{
  content:''; position:absolute; left:0; right:0; bottom:0; height:1px; background:var(--red);
  transform:scaleX(0); transform-origin:left; transition:transform .28s var(--ease);
}
.nav a:hover{ color:var(--bone) }
.nav a:hover::after,.nav a.is-on::after{ transform:scaleX(1) }
.nav a.is-on{ color:var(--red) }
.top__cta{ flex:none; display:flex; gap:8px }

.navtoggle{
  display:none; width:38px; height:38px; border:1px solid var(--rule); background:none;
  border-radius:var(--r); cursor:pointer; padding:0; position:relative;
}
.navtoggle span{
  position:absolute; left:10px; right:10px; height:1px; background:var(--bone);
  transition:transform .26s var(--ease),opacity .2s;
}
.navtoggle span:nth-child(1){ top:15px } .navtoggle span:nth-child(2){ top:22px }
.navtoggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(3.5px) rotate(45deg) }
.navtoggle[aria-expanded="true"] span:nth-child(2){ transform:translateY(-3.5px) rotate(-45deg) }
.mobnav{ display:none; flex-direction:column; border-top:1px solid var(--rule); background:var(--ink-1) }
.mobnav a{
  padding:14px var(--gap); border-bottom:1px solid var(--rule-2);
  font-family:var(--mono); font-size:.8rem; color:var(--dim);
}
.mobnav a:hover{ color:var(--red); background:var(--ink-2) }

/* ── hero ───────────────────────────────────────────────────────────── */
.hero{ position:relative; padding:clamp(46px,7vw,86px) 0 clamp(50px,6vw,74px); overflow:hidden }
.hero__glow{
  position:absolute; top:-30%; left:50%; width:1100px; height:900px; transform:translateX(-52%);
  background:radial-gradient(ellipse at center,rgba(238,7,18,.10),transparent 62%);
  pointer-events:none;
}
.hero__in{
  position:relative; display:grid; grid-template-columns:1.06fr .94fr; gap:clamp(32px,4.5vw,66px);
  align-items:center;
}
.hero__fig{ margin:0; position:relative }
/* No CSS filter here, deliberately. A drop-shadow on a canvas that repaints
   every frame re-runs the blur every frame: measured at 21 fps with it and
   60 fps without, on an idle machine. The glow is drawn inside the canvas
   instead, where it costs one extra stroke. */
#rosette{ width:100%; height:auto; aspect-ratio:1 }
.figcap{
  margin-top:14px; font-size:.78rem; color:var(--faint); line-height:1.62;
  border-left:1px solid var(--rule); padding-left:14px;
}
.figcap__k{ font-family:var(--mono); font-size:.66rem; letter-spacing:.16em; text-transform:uppercase; color:var(--red); display:block; margin-bottom:.3em }

.factbar{
  display:flex; flex-wrap:wrap; gap:0 clamp(18px,3vw,40px); margin:2.6em 0 0;
  border-top:1px solid var(--rule); padding-top:1.3em;
}
.factbar > div{ display:flex; flex-direction:column; gap:.32em }
.factbar dt{
  font-family:var(--mono); font-size:.6rem; letter-spacing:.18em; text-transform:uppercase; color:var(--ghost);
}
.factbar dd{ margin:0; font-size:.9rem; color:var(--bone) }

/* ── sections ───────────────────────────────────────────────────────── */
.sec{ padding:clamp(62px,8.5vw,116px) 0; border-top:1px solid var(--rule-2) }
.sec--alt{ background:linear-gradient(180deg,var(--ink-1),var(--ink)) }
.sec--alt + .sec--alt{ border-top:none }

.split{ display:grid; grid-template-columns:1.18fr .82fr; gap:clamp(32px,5vw,68px); align-items:start }
.split > *, .split__side, .split__side > *, .split__lede { min-width:0 }
.split__lede p{ color:var(--dim); margin:.9em 0 0; max-width:56ch }
.split__lede p .mono{ color:var(--bone) }
.split__side{ display:flex; flex-direction:column; gap:16px }

.quote{ margin-top:2.2em; border-left:1px solid var(--red); padding:2px 0 2px 22px }
.quote__thm{ font-size:1.02rem; color:var(--bone) }
.quote__pf{ margin-top:.7em !important; font-size:.92rem; color:var(--faint) }

/* ── cards ──────────────────────────────────────────────────────────── */
.card{
  background:var(--ink-2); border:1px solid var(--rule); border-radius:var(--r);
  padding:22px 24px 20px;
}
.card--tight{ padding:18px 20px 16px }
.card__label{
  font-family:var(--mono); font-size:.63rem; letter-spacing:.2em; text-transform:uppercase;
  color:var(--red); margin-bottom:1em;
}
.card__p{ font-size:.87rem; color:var(--dim); line-height:1.68 }
.card__p .mono{ color:var(--bone) }
.card__p em{ color:var(--bone); font-style:italic }
.card__foot{
  margin-top:1em; padding-top:.9em; border-top:1px solid var(--rule-2);
  font-size:.75rem; color:var(--ghost); line-height:1.6;
}
.card__foot .mono{ color:var(--dim) }

.ticks{ display:flex; flex-direction:column; gap:.85em }
.ticks li{ font-size:.86rem; color:var(--dim); padding-left:16px; position:relative; line-height:1.6 }
.ticks li::before{ content:''; position:absolute; left:0; top:.62em; width:6px; height:1px; background:var(--red) }
.ticks b{ color:var(--bone); font-weight:600 }
.ticks .mono{ color:var(--bone) }

/* ── minitable ──────────────────────────────────────────────────────── */
.minitable{ font-size:.82rem }
.minitable{ table-layout:auto }
.minitable th{
  font-family:var(--mono); font-size:.6rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--ghost); text-align:left; font-weight:400; padding:0 0 .7em;
  border-bottom:1px solid var(--rule);
}
.minitable td{ padding:.62em 0; border-bottom:1px solid var(--rule-2); color:var(--dim); vertical-align:top; overflow-wrap:anywhere }
.minitable tr:last-child td{ border-bottom:none }
.minitable td:first-child{ color:var(--bone) }
.minitable td.mono{ font-variant-numeric:tabular-nums; color:var(--dim) }
.minitable .ok{ color:var(--ok) }
.minitable .num{ font-family:var(--mono); font-variant-numeric:tabular-nums; color:var(--red) }

/* ── panels ─────────────────────────────────────────────────────────── */
.panels{ display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--rule); border:1px solid var(--rule) }
.panel{ background:var(--ink-1); padding:20px 22px 18px; display:flex; flex-direction:column }
.panel__head{ display:flex; align-items:baseline; gap:.8em; margin-bottom:14px }
.panel__no{ font-size:.68rem; color:var(--red); letter-spacing:.1em }
.panel__t{ font-size:1.06rem; font-weight:400; letter-spacing:-.01em }
.panel__cv{ width:100%; height:auto; aspect-ratio:56/30; background:var(--ink); border:1px solid var(--rule-2); border-radius:2px }
.panel__p{ font-size:.83rem; color:var(--faint); margin-top:14px; line-height:1.64; flex:1 }
.panel__p .mono{ color:var(--dim) }
.panel__m{
  margin-top:12px; padding-top:10px; border-top:1px solid var(--rule-2);
  font-size:.68rem; color:var(--red); letter-spacing:.05em; font-variant-numeric:tabular-nums;
}

/* ── filters + architecture grid ────────────────────────────────────── */
.filters{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:26px }
.chip{
  display:inline-flex; align-items:center; gap:.55em; padding:8px 14px; cursor:pointer;
  background:none; border:1px solid var(--rule); border-radius:100px;
  font-family:var(--mono); font-size:.7rem; letter-spacing:.08em; color:var(--dim);
  transition:all .2s var(--ease);
}
.chip:hover{ border-color:var(--rule-3); color:var(--bone) }
.chip.is-on{ border-color:var(--red); color:var(--red); background:var(--red-ink) }
.chip__n{ font-size:.62rem; color:var(--ghost) }
.chip.is-on .chip__n{ color:var(--red) }

.arch, .arch__top, .arch__more { min-width:0 }
.archgrid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(min(310px,100%),1fr)); gap:1px; background:var(--rule); border:1px solid var(--rule) }
.arch{
  background:var(--ink-1); padding:20px 22px; transition:background .22s var(--ease); position:relative;
}
.arch:hover{ background:var(--ink-2) }
.arch.is-open{ background:var(--ink-2) }
.arch[hidden]{ display:none }
.arch__top{
  display:flex; align-items:center; flex-wrap:wrap; row-gap:.4em;
  gap:.7em; margin-bottom:.7em;
  width:100%; background:none; border:none; padding:0; cursor:pointer;
  text-align:left; font:inherit; color:inherit;
}
.arch__top:focus-visible{ outline:2px solid var(--red); outline-offset:3px }
.arch__chev{
  font-family:var(--mono); font-size:1rem; line-height:1; color:var(--red); flex:none;
  width:14px; text-align:center; transition:color .2s var(--ease);
}
.arch.is-open .arch__chev{ color:var(--red-2) }
.arch__name{ font-family:var(--mono); font-size:.82rem; color:var(--bone); letter-spacing:-.01em; overflow-wrap:anywhere; min-width:0 }
.arch.is-open .arch__name{ color:var(--red) }
.arch__cat{
  margin-left:auto; font-family:var(--mono); font-size:.58rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--ghost); border:1px solid var(--rule); border-radius:100px; padding:3px 9px; flex:none;
}
.arch__desc{ font-size:.83rem; color:var(--faint); line-height:1.62 }
.arch__more{ display:none; margin-top:14px; padding-top:14px; border-top:1px solid var(--rule-2) }
.arch.is-open .arch__more{ display:block; animation:fade .32s var(--ease) }
@keyframes fade{ from{ opacity:0; transform:translateY(-4px) } to{ opacity:1; transform:none } }
.arch__h{
  font-family:var(--mono); font-size:.58rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--red); margin:14px 0 .6em;
}
.arch__h:first-child{ margin-top:0 }
.arch__list{ display:flex; flex-direction:column; gap:.4em }
.arch__list li{ font-size:.79rem; color:var(--dim); padding-left:13px; position:relative; line-height:1.55 }
.arch__list li::before{ content:'—'; position:absolute; left:0; color:var(--ghost); font-size:.7rem }
.arch__params{ display:flex; flex-wrap:wrap; gap:6px }
.arch__params code{
  font-family:var(--mono); font-size:.68rem; color:var(--ok);
  background:rgba(111,207,151,.07); border:1px solid rgba(111,207,151,.2);
  border-radius:2px; padding:3px 8px;
  /* heavy_swarm_question_agent_model_name is 39 unbreakable characters —
     the longest single token on the page, and it must not set the width
     of the whole grid on a narrow screen */
  overflow-wrap:anywhere; max-width:100%;
}
.arch__params .none{ font-size:.72rem; color:var(--ghost) }
.arch__link{
  display:inline-block; margin-top:14px; font-family:var(--mono); font-size:.68rem;
  color:var(--red); letter-spacing:.04em; border-bottom:1px solid transparent; transition:border-color .2s;
}
.arch__link:hover{ border-color:var(--red) }

/* ── notices ────────────────────────────────────────────────────────── */
.notice{
  margin-top:30px; border:1px solid var(--rule); border-left:2px solid var(--dim);
  background:var(--ink-2); border-radius:0 var(--r) var(--r) 0; padding:18px 22px;
}
.notice__t{
  font-family:var(--mono); font-size:.64rem; letter-spacing:.18em; text-transform:uppercase;
  color:var(--bone); margin-bottom:.7em;
}
.notice p{ font-size:.85rem; color:var(--dim); line-height:1.68 }
.notice p + p{ margin-top:.7em }
.notice .mono{ color:var(--bone) }
.notice--warn{ border-left-color:var(--red) }
.notice--warn .notice__t{ color:var(--red) }
.notice--scope{ border-left-color:var(--ok); margin-top:3.4em; text-align:left; max-width:78ch; margin-inline:auto }
.notice--scope .notice__t{ color:var(--ok) }
.notice .code__pre{ margin:1em 0 }

/* ── builder ────────────────────────────────────────────────────────── */

/* Grid and flex children default to min-width:auto, which means a long
   monospace identifier or a form control's intrinsic size can force a
   track wider than the viewport. Everything that can hold such content
   opts out of that minimum. */
.builder > *, .bform, .bform *, .bout, .bout *,
.bform__row > *, .fld, .fld > *,
.roster, .roster__list, .roster__list > *, .arow, .arow__top > *,
.arow__grid, .arow__grid > *, .bout__stats > *,
.code, .code__bar, .code__pre { min-width: 0 }
input, select, textarea { min-width: 0; max-width: 100% }
.builder{ display:grid; grid-template-columns:1.02fr .98fr; gap:clamp(20px,3vw,34px); align-items:start }
.bform{ display:flex; flex-direction:column; gap:20px }
.bform__row{ display:grid; grid-template-columns:1fr 1fr; gap:16px }
.bform__row--3{ grid-template-columns:92px 1.5fr 1.2fr }
.bform__row--loops{ grid-template-columns:92px 1fr }
.togrow{ display:flex; flex-wrap:wrap; gap:9px clamp(16px,3vw,34px) }

.fld{ display:flex; flex-direction:column; gap:.55em; min-width:0 }
.fld--sm{ margin-bottom:14px }
.fld__l{
  font-family:var(--mono); font-size:.63rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--dim); display:flex; align-items:baseline; gap:.6em; flex-wrap:wrap;
}
.fld__hint{ text-transform:none; letter-spacing:0; color:var(--ghost); font-size:.62rem }
.fld__l--id{ text-transform:none; letter-spacing:.01em; font-size:.74rem; color:var(--bone) }
.fld--toggles{ gap:.5em }
.fld--extra{ border-top:1px solid var(--rule); padding-top:18px }
.fld--extra[hidden]{ display:none }

input[type=text],input[type=number],select,textarea{
  width:100%; background:var(--ink-2); border:1px solid var(--rule); border-radius:var(--r);
  padding:11px 13px; font-family:var(--mono); font-size:.8rem; color:var(--bone);
  transition:border-color .2s var(--ease),background .2s; min-width:0;
}
textarea{ resize:vertical; line-height:1.6; font-size:.78rem }
input:focus,select:focus,textarea:focus{ outline:none; border-color:var(--red); background:var(--ink-3) }
select{
  appearance:none; cursor:pointer; padding-right:32px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2397928a'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 12px center;
}
input[type=number]{ font-variant-numeric:tabular-nums }

.tog{ display:flex; align-items:center; gap:.6em; cursor:pointer; font-size:.74rem; color:var(--dim); padding:3px 0 }
.tog--block{ margin:6px 0 16px }
.tog input{ appearance:none; width:32px; height:17px; border:1px solid var(--rule-3); border-radius:100px; background:var(--ink); position:relative; cursor:pointer; flex:none; transition:border-color .2s,background .2s }
.tog input::after{ content:''; position:absolute; top:2px; left:2px; width:11px; height:11px; border-radius:50%; background:var(--dim); transition:transform .24s var(--ease),background .2s }
.tog input:checked{ border-color:var(--red); background:var(--red-ink) }
.tog input:checked::after{ transform:translateX(15px); background:var(--red) }

.roster{ border-top:1px solid var(--rule); padding-top:18px }
.roster__head{ display:flex; align-items:center; justify-content:space-between; gap:14px; flex-wrap:wrap; margin-bottom:14px }
.roster__acts{ display:flex; gap:8px; flex-wrap:wrap }
.roster__list{ display:flex; flex-direction:column; gap:10px }
.roster__note{ font-size:.74rem; color:var(--ghost); margin-top:14px; line-height:1.6 }
.roster__note .mono{ color:var(--dim) }

.arow{
  border:1px solid var(--rule); border-radius:var(--r); background:var(--ink-2);
  padding:13px 14px; display:flex; flex-direction:column; gap:10px;
}
.arow__top{ display:flex; align-items:center; gap:10px }
.arow__i{ font-family:var(--mono); font-size:.66rem; color:var(--red); flex:none; width:20px }
.arow__grow{ flex:1; min-width:0 }
.arow__kill{
  background:none; border:1px solid var(--rule); border-radius:2px; color:var(--faint);
  cursor:pointer; width:26px; height:26px; flex:none; line-height:1; font-size:1rem; transition:all .2s;
}
.arow__kill:hover{ border-color:var(--bad); color:var(--bad) }
.arow__grid{ display:grid; grid-template-columns:1.25fr .85fr .62fr; gap:8px }
.arow__grid input,.arow__grid select{ padding:8px 10px; font-size:.74rem }
.arow__prompt{ font-size:.72rem !important; padding:9px 10px !important }

.bout{ display:flex; flex-direction:column; gap:16px; position:sticky; top:84px }
.tabs{ display:flex; gap:0; border:1px solid var(--rule); border-bottom:none; border-radius:var(--r) var(--r) 0 0; overflow:hidden; background:var(--ink-2) }
.tab{
  flex:1; background:none; border:none; border-right:1px solid var(--rule); cursor:pointer;
  padding:11px 8px; font-family:var(--mono); font-size:.68rem; letter-spacing:.1em; text-transform:uppercase;
  color:var(--faint); transition:all .2s var(--ease);
}
.tab:last-child{ border-right:none }
.tab:hover{ color:var(--bone); background:var(--ink-3) }
.tab.is-on{ color:var(--red); background:var(--ink) }
.tabs{ position:relative }
.tabs__ind{
  position:absolute; left:0; bottom:0; height:1px; background:var(--red);
  transition:transform .32s var(--ease),width .32s var(--ease); pointer-events:none;
}
.tabs--sub{ border-bottom:1px solid var(--rule); border-radius:var(--r) var(--r) 0 0; max-width:620px }

.code{ border:1px solid var(--rule); border-radius:0 0 var(--r) var(--r); overflow:hidden; background:var(--ink) }
.tabs + .code{ border-radius:0 0 var(--r) var(--r) }
.code__bar{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:9px 12px 9px 14px; border-bottom:1px solid var(--rule); background:var(--ink-2);
}
.code__bar .mono{ font-size:.68rem; color:var(--faint); letter-spacing:.04em }
.code__pre{
  margin:0; padding:16px; overflow:auto; max-height:440px;
  font-family:var(--mono); font-size:.73rem; line-height:1.72; color:var(--syn-text);
  -webkit-overflow-scrolling:touch;
}
.code__pre code{ font-family:inherit; white-space:pre; display:block }
.code__pre--flat{ border:1px solid var(--rule); border-radius:var(--r); background:var(--ink); max-height:none }
.tok-k{ color:var(--syn-key) }    /* keys / keywords */
.tok-s{ color:var(--syn-str) }    /* strings */
.tok-n{ color:var(--syn-num) }    /* numbers / booleans */
.tok-c{ color:var(--syn-com) }    /* comments, punctuation */
.tok-f{ color:var(--syn-alt) }    /* flags / endpoints */
.tok-fn{ color:var(--syn-fn) }    /* calls */

.bout__stats{ display:flex; flex-wrap:wrap; gap:0 26px; border:1px solid var(--rule); border-radius:var(--r); padding:14px 18px; background:var(--ink-2) }
.bout__stats > div{ display:flex; flex-direction:column; gap:.25em }
.bout__stats dt{ font-family:var(--mono); font-size:.58rem; letter-spacing:.16em; text-transform:uppercase; color:var(--ghost) }
.bout__stats dd{ margin:0; font-family:var(--mono); font-size:.82rem; color:var(--bone); font-variant-numeric:tabular-nums }

/* ── reference tables ───────────────────────────────────────────────── */
.refbox{ border:1px solid var(--rule); border-top:none; border-radius:0 0 var(--r) var(--r); background:var(--ink-1); overflow:hidden }
.reftable__scroll{ overflow-x:auto; -webkit-overflow-scrolling:touch }
.reftable{ font-size:.8rem; min-width:640px }
.reftable th{
  position:sticky; top:0; background:var(--ink-2); z-index:2;
  font-family:var(--mono); font-size:.59rem; letter-spacing:.15em; text-transform:uppercase;
  color:var(--ghost); text-align:left; font-weight:400; padding:13px 16px; border-bottom:1px solid var(--rule);
  white-space:nowrap;
}
.reftable td{ padding:11px 16px; border-bottom:1px solid var(--rule-2); color:var(--dim); vertical-align:top; line-height:1.55 }
.reftable tr:last-child td{ border-bottom:none }
.reftable tbody tr:hover{ background:var(--ink-2) }
.reftable td:first-child{ font-family:var(--mono); color:var(--bone); font-size:.76rem; white-space:nowrap }
.reftable .t{ font-family:var(--mono); font-size:.71rem; color:var(--faint); white-space:nowrap }
.reftable .d{ color:var(--red); font-family:var(--mono); font-size:.71rem; white-space:nowrap }
.reftable .req{ color:var(--bad); font-family:var(--mono); font-size:.62rem; letter-spacing:.1em; text-transform:uppercase }
.reftable .opt{ color:var(--ghost); font-family:var(--mono); font-size:.62rem; letter-spacing:.1em; text-transform:uppercase }
.reftable .desc{ min-width:280px; font-size:.78rem }
.refbox__note{ padding:14px 18px; border-top:1px solid var(--rule); font-size:.76rem; color:var(--faint); line-height:1.62; background:var(--ink-2) }
.refbox__note .mono{ color:var(--dim) }
.refbox__note b{ color:var(--bone) }

/* ── cost ───────────────────────────────────────────────────────────── */
.cost{ display:grid; grid-template-columns:1.24fr .76fr; gap:clamp(24px,3.5vw,44px); align-items:start }
.dtable{ font-size:.84rem }
.dtable caption{ text-align:left }
.dtable th{
  font-family:var(--mono); font-size:.6rem; letter-spacing:.15em; text-transform:uppercase;
  color:var(--ghost); text-align:left; font-weight:400; padding:0 0 12px; border-bottom:1px solid var(--rule);
}
.dtable td{ padding:13px 0; border-bottom:1px solid var(--rule-2); color:var(--dim) }
.dtable td:first-child{ color:var(--bone) }
.dtable td:nth-child(2){ width:110px; font-variant-numeric:tabular-nums }
.dtable td:last-child{ width:40%; font-size:.79rem; color:var(--faint) }
.dtable .hi{ color:var(--red) }
.dtable .row--mark td{ border-bottom:none; border-top:1px solid var(--rule); padding-top:16px }
.dtable .row--mark td:first-child{ color:var(--red) }
.cost__calc{ display:flex; flex-direction:column; gap:16px }

.calc{ border-top:1px solid var(--rule); padding-top:16px; display:flex; flex-direction:column; gap:.6em }
.calc__row{ display:flex; align-items:baseline; justify-content:space-between; gap:14px; font-size:.81rem }
.calc__row span{ color:var(--faint) }
.calc__row b{ font-family:var(--mono); font-weight:400; color:var(--dim); font-variant-numeric:tabular-nums }
.calc__row--tot{ border-top:1px solid var(--rule); padding-top:.8em; margin-top:.3em }
.calc__row--tot span{ color:var(--bone) }
.calc__row--tot b{ font-size:1.12rem; color:var(--red) }
.calc__note{ font-size:.71rem; color:var(--ghost); line-height:1.55; margin-top:.5em }

/* ── proof ──────────────────────────────────────────────────────────── */
.proof{ display:grid; grid-template-columns:1.36fr .64fr; gap:clamp(24px,3.5vw,44px); align-items:start }
.proof__ledger{ border:1px solid var(--rule); border-radius:var(--r); background:var(--ink-1); overflow:hidden }
.proof__head{
  display:flex; align-items:center; justify-content:space-between; gap:14px;
  padding:13px 18px; border-bottom:1px solid var(--rule); background:var(--ink-2);
}
.proof__head .mono{ font-size:.68rem; color:var(--faint); letter-spacing:.06em }
.pill{
  font-family:var(--mono); font-size:.6rem; letter-spacing:.14em; text-transform:uppercase;
  border:1px solid var(--rule-3); border-radius:100px; padding:3px 10px; color:var(--dim);
}
.pill--ok{ color:var(--ok); border-color:rgba(111,207,151,.4); background:rgba(111,207,151,.07) }
.pill--run{ color:var(--red); border-color:rgba(238,7,18,.4) }
.pill--bad{ color:var(--bad); border-color:rgba(255,77,77,.4) }

.ledger{ display:flex; flex-direction:column }
.ledger li{
  display:grid; grid-template-columns:26px 1fr auto; gap:14px; align-items:start;
  padding:15px 18px; border-bottom:1px solid var(--rule-2);
}
.ledger li:last-child{ border-bottom:none }
.ledger__i{ font-family:var(--mono); font-size:.66rem; color:var(--ghost); padding-top:2px }
.ledger__b{ min-width:0 }
.ledger__st{ font-size:.88rem; color:var(--bone); line-height:1.5 }
.ledger__st .mono{ color:var(--red); font-size:.84em }
.ledger__w{ font-family:var(--mono); font-size:.69rem; color:var(--faint); margin-top:.5em; line-height:1.6; word-break:break-word }
.ledger__v{
  font-family:var(--mono); font-size:.6rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--ghost); border:1px solid var(--rule); border-radius:100px; padding:3px 9px; white-space:nowrap;
}
.ledger__v--ok{ color:var(--ok); border-color:rgba(111,207,151,.35) }
.ledger__v--bad{ color:var(--bad); border-color:rgba(255,77,77,.4) }
.ledger__v--run{ color:var(--red); border-color:rgba(238,7,18,.35) }
.proof__foot{
  padding:13px 18px; border-top:1px solid var(--rule); background:var(--ink-2);
  font-family:var(--mono); font-size:.68rem; color:var(--faint); letter-spacing:.03em;
}
.proof__side{ display:flex; flex-direction:column; gap:16px }

/* ── telemetry ──────────────────────────────────────────────────────── */
.telem{
  display:grid; grid-template-columns:repeat(auto-fill,minmax(min(258px,100%),1fr));
  gap:1px; background:var(--rule); border:1px solid var(--rule);
}
.tcard{ background:var(--ink-1); padding:18px 20px 16px; display:flex; flex-direction:column; gap:.6em }
.tcard__k{
  font-family:var(--mono); font-size:.6rem; letter-spacing:.16em; text-transform:uppercase; color:var(--ghost);
}
.tcard__v{ font-family:var(--mono); font-size:1.38rem; color:var(--ghost); letter-spacing:-.01em; font-variant-numeric:tabular-nums }
.tcard__v--absent{ color:var(--faint); font-size:1.02rem }
.tcard__e{ font-family:var(--mono); font-size:.66rem; color:var(--ok); word-break:break-all; line-height:1.5 }
.tcard__n{ font-size:.74rem; color:var(--ghost); line-height:1.55; margin-top:auto; padding-top:.6em }

/* ── close + footer ─────────────────────────────────────────────────── */
.close{ border-top:1px solid var(--rule); background:linear-gradient(180deg,var(--ink-1),var(--ink)) }
.close__in{ text-align:center }
.close .h2{ margin-bottom:.2em }

.foot{ border-top:1px solid var(--rule); padding:clamp(46px,6vw,72px) 0 26px; background:var(--ink) }
.foot__in{ display:grid; grid-template-columns:.8fr 2.2fr; gap:clamp(30px,4vw,60px) }
.foot__brand{ display:flex; gap:14px; align-items:flex-start }
.foot__brand .brand__sigil{ font-size:1.7rem }
.foot__w{ font-size:1.06rem }
.foot__s{ font-size:.79rem; color:var(--ghost); margin-top:.3em; line-height:1.55; max-width:30ch }
.foot__nav{ display:grid; grid-template-columns:repeat(4,1fr); gap:clamp(18px,2.4vw,34px) }
.foot__h{
  font-family:var(--mono); font-size:.6rem; letter-spacing:.18em; text-transform:uppercase;
  color:var(--red); margin-bottom:1em;
}
.foot__nav a{ display:block; font-size:.82rem; color:var(--faint); padding:5px 0; transition:color .2s }
.foot__nav a:hover{ color:var(--bone) }
.foot__bar{
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  margin-top:clamp(38px,5vw,60px); padding-top:20px; border-top:1px solid var(--rule-2);
}
.foot__bar .mono{ font-size:.68rem; color:var(--ghost); letter-spacing:.06em }

/* ── reveal ─────────────────────────────────────────────────────────── */
.rv{ opacity:0; transform:translateY(16px);
  transition:opacity .72s var(--ease),transform .72s var(--ease);
  transition-delay:var(--rv-delay,0ms); will-change:opacity,transform }
.rv.in{ opacity:1; transform:none }

/* ── responsive ─────────────────────────────────────────────────────── */
@media (max-width:1080px){
  .hero__in{ grid-template-columns:1fr; gap:44px }
  .hero__fig{ max-width:520px; margin-inline:auto; width:100% }
  .builder,.cost,.proof{ grid-template-columns:1fr }
  .bout{ position:static }
  .split{ grid-template-columns:1fr }
  .foot__in{ grid-template-columns:1fr }
}
/* nine links plus a brand and a button stop fitting well before the mobile
   menu takes over, so the button yields first */
@media (max-width:1140px){
  .top__cta{ display:none }
}

@media (max-width:860px){
  body{ font-size:16px }
  .nav,.top__cta{ display:none }
  .navtoggle{ display:block }
  .mobnav{ display:flex }
  .mobnav[hidden]{ display:none }
  .panels{ grid-template-columns:1fr }
  .bform__row,.bform__row--3{ grid-template-columns:1fr }
  .foot__nav{ grid-template-columns:1fr 1fr }
  .refbox{ border-radius:0 }
  .tabs--sub{ max-width:none }
}
@media (max-width:520px){
  :root{ --gap:18px }
  .archgrid{ grid-template-columns:1fr }
  .foot__nav{ grid-template-columns:1fr }
  /* .btn labels are nowrap by design; shrinking a button under its own
     label width spills the text out of the box. On phones they take a
     full row each instead. */
  .cta .btn{ flex:1 1 100%; min-width:0 }
  .factbar{ gap:14px 22px }
  .foot__bar{ flex-direction:column; align-items:flex-start }
}

@media (prefers-reduced-motion:reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important }
  html{ scroll-behavior:auto }
  .rv{ opacity:1; transform:none }
}

/* ═══════════════════════════════════════════════════════════════════════
   Motion & interaction layer
   Appended after the original system so the intent stays readable: the
   block above is the static design, this is everything that moves.
   ═══════════════════════════════════════════════════════════════════════ */

/* ── scroll progress + back to top ──────────────────────────────────── */
.progress{ position:absolute; left:0; right:0; bottom:-1px; height:2px; pointer-events:none }
.progress__fill{
  display:block; height:100%; transform:scaleX(0); transform-origin:0 50%;
  background:linear-gradient(90deg,var(--red),var(--red-2));
  will-change:transform;
}
.totop{
  position:fixed; right:22px; bottom:22px; z-index:150;
  width:42px; height:42px; padding:0; border-radius:50%; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  background:rgba(20,20,22,.9); backdrop-filter:blur(8px);
  border:1px solid var(--rule-3); color:var(--bone); font-size:1rem; line-height:1;
  opacity:0; transform:translateY(12px) scale(.9); pointer-events:none;
  transition:opacity .32s var(--ease),transform .32s var(--ease),border-color .2s,color .2s;
}
.totop.is-on{ opacity:1; transform:none; pointer-events:auto }
.totop:hover{ border-color:var(--red); color:var(--red-2) }
.totop:active{ transform:scale(.94) }

/* ── cursor spotlight ───────────────────────────────────────────────── */
.spot{ position:relative }
.spot::after{
  content:''; position:absolute; inset:0; pointer-events:none; opacity:0; z-index:0;
  transition:opacity .38s var(--ease);
  background:radial-gradient(300px circle at var(--mx,50%) var(--my,50%),
             rgba(238,7,18,.11), transparent 60%);
}
.spot:hover::after{ opacity:1 }
/* lift content above the spotlight wash — but never reposition a child
   that is deliberately absolute (the loop's dwell bar is one) */
.spot > *:not(.lstage__bar){ position:relative; z-index:1 }

/* ── topology diagrams ──────────────────────────────────────────────── */
.topo{ width:100%; height:auto; display:block; margin:0 0 14px; overflow:visible }
.topo__e{
  stroke:var(--rule-3); stroke-width:1; stroke-dasharray:3 5; fill:none;
  transition:stroke .3s var(--ease);
}
.topo__n{
  fill:var(--ink-3); stroke:var(--rule-3); stroke-width:1;
  transition:fill .3s var(--ease),stroke .3s var(--ease);
}
.topo__n--in{ fill:var(--red); stroke:var(--red) }
.topo__n--out{ fill:var(--bone); stroke:var(--bone) }
.arch:hover .topo__e,.arch.is-open .topo__e{ stroke:rgba(238,7,18,.42) }
.arch.is-open .topo__n{ fill:var(--red); stroke:var(--red-2) }
.arch.is-open .topo__n--out{ fill:var(--bone); stroke:var(--bone) }

/* only the diagram under the cursor animates */
.topo.is-live .topo__e{ animation:topoflow 3.4s linear infinite; animation-delay:var(--d,0s) }
.topo.is-live .topo__n{ animation:toponode 3.4s ease-in-out infinite; animation-delay:var(--d,0s) }
@keyframes topoflow{ from{ stroke-dashoffset:0 } to{ stroke-dashoffset:-16 } }
@keyframes toponode{ 0%,100%{ opacity:.42 } 16%{ opacity:1 } 52%{ opacity:.72 } }

.topo__legend{
  display:flex; align-items:center; gap:.55em; flex-wrap:wrap;
  font-family:var(--mono); font-size:.58rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--ghost); margin-top:.2em;
}
.topo__legend .topo__key{ width:7px; height:7px; border-radius:1px; background:var(--ink-3); border:1px solid var(--rule-3); display:inline-block }
.topo__legend .topo__key--in{ background:var(--red); border-color:var(--red) }
.topo__legend .topo__key--out{ background:var(--bone); border-color:var(--bone) }
.topo__legend .topo__key:not(:first-child){ margin-left:.7em }

/* ── the loop ───────────────────────────────────────────────────────── */
.loop{ border:1px solid var(--rule); border-radius:var(--r); background:var(--ink-1); overflow:hidden }
.loop__rail{
  display:grid; grid-template-columns:repeat(6,1fr); position:relative;
  border-bottom:1px solid var(--rule);
}
.loop__line{ position:absolute; left:0; right:0; top:0; height:1px; background:var(--rule-2) }
.loop__pulse{
  position:absolute; top:0; left:0; width:6px; height:6px; margin:-2.5px 0 0 -3px; border-radius:50%;
  background:var(--red-2); box-shadow:0 0 10px 2px rgba(238,7,18,.5); will-change:transform;
  animation:railpulse 7.2s cubic-bezier(.65,0,.35,1) infinite;
}
@keyframes railpulse{ from{ transform:translateX(0) } to{ transform:translateX(var(--railw,100%)) } }
.lstage{
  position:relative; display:flex; flex-direction:column; gap:.55em; align-items:flex-start;
  padding:18px 16px 21px; background:none; border:none; cursor:pointer;
  font:inherit; color:inherit; text-align:left; transition:background .3s var(--ease);
}
.lstage + .lstage{ border-left:1px solid var(--rule-2) }
.lstage:hover{ background:var(--ink-2) }
.lstage:focus-visible{ outline:2px solid var(--red); outline-offset:-3px }
.lstage__no{ font-size:.6rem; letter-spacing:.18em; color:var(--ghost); transition:color .3s var(--ease) }
.lstage__t{ font-size:.85rem; color:var(--dim); transition:color .3s var(--ease); line-height:1.3 }
.lstage.is-on{ background:var(--ink-2) }
.lstage.is-on .lstage__no{ color:var(--red-2) }
.lstage.is-on .lstage__t{ color:var(--bone) }
.lstage__bar{ position:absolute; left:0; right:0; bottom:0; height:1px; background:var(--rule-2); overflow:hidden }
.lstage__bar i{ display:block; height:100%; background:var(--red); transform:scaleX(0); transform-origin:0 50% }
.lstage.is-on .lstage__bar i{ animation:dwell 3.6s linear forwards }
@keyframes dwell{ to{ transform:scaleX(1) } }

.loop__panel{
  padding:clamp(20px,2.6vw,30px); background:var(--ink-1);
  transition:opacity .18s var(--ease),transform .18s var(--ease);
}
.loop__panel.is-swap{ opacity:0; transform:translateY(6px) }
.loop__sum{ font-size:clamp(1rem,1.6vw,1.14rem); color:var(--bone); margin-bottom:.7em; font-style:italic }
.loop__body{ font-size:.9rem; color:var(--dim); line-height:1.72; max-width:78ch }
.loop__body code{
  font-family:var(--mono); font-size:.85em; color:var(--red-2);
  background:var(--red-ink); border:1px solid rgba(238,7,18,.16);
  border-radius:2px; padding:1px 5px;
  /* not nowrap: the endpoint URL is 51 unbreakable characters, and the
     panel clips its overflow, so a nowrap chip would be silently cut off
     on a phone rather than wrapping */
  overflow-wrap:anywhere;
}
.loop__body em{ color:var(--bone); font-style:italic }
.loop__facts{
  display:flex; flex-wrap:wrap; gap:16px clamp(22px,4vw,46px);
  margin-top:1.5em; padding-top:1.3em; border-top:1px solid var(--rule-2);
}
.loop__facts dt{
  font-family:var(--mono); font-size:.57rem; letter-spacing:.16em; text-transform:uppercase; color:var(--ghost);
}
.loop__facts dd{ margin:.35em 0 0; font-size:.83rem; color:var(--bone) }

/* ── press + focus states ───────────────────────────────────────────── */
.btn:active{ transform:translateY(1px) }
.chip:active{ transform:scale(.97) }
.arch__top:active .arch__name{ color:var(--red) }
.chip:focus-visible,.tab:focus-visible,.totop:focus-visible,
.arow__kill:focus-visible,.arch__link:focus-visible,.foot__nav a:focus-visible{
  outline:2px solid var(--red); outline-offset:2px;
}
input:focus-visible,select:focus-visible,textarea:focus-visible{ outline:none }

/* the copy button confirms in place */
#copy-btn.is-done{ border-color:var(--ok); color:var(--ok) }

@media (max-width:860px){
  .loop__rail{ grid-template-columns:repeat(3,1fr) }
  .lstage:nth-child(4),.lstage:nth-child(5),.lstage:nth-child(6){ border-top:1px solid var(--rule-2) }
  .lstage:nth-child(4){ border-left:none }
  .loop__pulse{ display:none }
  .spot::after{ display:none }
}
@media (max-width:520px){
  .loop__rail{ grid-template-columns:repeat(2,1fr) }
  .lstage:nth-child(odd){ border-left:none }
  .lstage:nth-child(n+3){ border-top:1px solid var(--rule-2) }
  .totop{ right:14px; bottom:14px }
}

@media (prefers-reduced-motion:reduce){
  .topo.is-live .topo__e,.topo.is-live .topo__n,.loop__pulse,.lstage.is-on .lstage__bar i{ animation:none }
  .lstage.is-on .lstage__bar i{ transform:scaleX(1) }
  .spot::after{ display:none }
  .loop__panel{ transition:none }
}

/* ── builder topology card ──────────────────────────────────────────── */
.btopo{
  border:1px solid var(--rule); border-radius:var(--r); background:var(--ink-2);
  padding:16px 18px 14px;
}
.btopo__head{ display:flex; align-items:baseline; justify-content:space-between; gap:14px; margin-bottom:10px }
.btopo__k{ font-family:var(--mono); font-size:.58rem; letter-spacing:.18em; text-transform:uppercase; color:var(--ghost) }
.btopo__v{ font-family:var(--mono); font-size:.76rem; color:var(--red-2) }
.btopo .topo{ margin-bottom:8px; max-width:420px }
.btopo__note{
  font-family:var(--mono); font-size:.62rem; letter-spacing:.05em; color:var(--faint);
  padding-top:10px; border-top:1px solid var(--rule-2);
}

/* ── expandable proof rows ──────────────────────────────────────────── */
.ledger li{ cursor:pointer; transition:background .22s var(--ease) }
.ledger li:hover{ background:var(--ink-2) }
.ledger__more{
  display:none; margin-top:.9em; padding:.9em 0 0 0; border-top:1px solid var(--rule-2);
  font-family:var(--mono); font-size:.68rem; line-height:1.75; color:var(--faint);
  word-break:break-word;
}
.ledger li.is-open{ background:var(--ink-2) }
.ledger li.is-open .ledger__more{ display:block; animation:fade .3s var(--ease) }
.ledger__more b{ color:var(--dim); font-weight:400 }
.ledger__more .k{ color:var(--red-2) }
.ledger__hint{
  font-family:var(--mono); font-size:.56rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--ghost); margin-top:.6em; display:block;
}
.rerun{
  background:none; border:1px solid var(--rule); border-radius:100px; cursor:pointer;
  padding:4px 12px; font-family:var(--mono); font-size:.6rem; letter-spacing:.14em;
  text-transform:uppercase; color:var(--dim); transition:all .2s var(--ease);
}
.rerun:hover{ border-color:var(--red); color:var(--red-2) }
.rerun:active{ transform:scale(.96) }
.rerun:focus-visible{ outline:2px solid var(--red); outline-offset:2px }
.proof__head{ gap:10px }
.proof__head .pill{ margin-left:auto }

/* ── the solver ─────────────────────────────────────────────────────── */
.solve{ display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--rule); border:1px solid var(--rule) }
.solve__card{ background:var(--ink-1); padding:24px 26px 22px; display:flex; flex-direction:column; min-width:0 }
.solve__head{ display:flex; align-items:baseline; justify-content:space-between; gap:14px; margin-bottom:14px }
.solve__head .card__label{ margin-bottom:0 }
.solve__hint{ font-size:.62rem; color:var(--ghost); letter-spacing:.1em; white-space:nowrap }
.solve__in{ display:flex; align-items:flex-end; gap:12px }
.solve__in .fld{ margin-bottom:0 }
.solve__in .btn{ flex:none; margin-bottom:1px }
.solve__out{ margin-top:20px; padding-top:18px; border-top:1px solid var(--rule-2); min-width:0 }

.sbig{
  font-family:var(--mono); font-size:.68rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--faint); margin-bottom:.9em;
}
.svalue{
  font-family:var(--mono); font-size:clamp(1.05rem,2vw,1.5rem); color:var(--bone);
  letter-spacing:-.01em; word-break:break-all; line-height:1.3; font-variant-numeric:tabular-nums;
}
.scert{ margin-top:18px; display:flex; flex-direction:column; gap:.55em }
.srow{ display:flex; gap:16px; align-items:flex-start; font-size:.76rem }
.srow dt{
  font-family:var(--mono); font-size:.58rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--ghost); width:126px; flex:none; padding-top:.25em;
}
.srow dd{ margin:0; font-family:var(--mono); font-size:.72rem; color:var(--dim); line-height:1.6; word-break:break-all; min-width:0 }
.srow dd b{ color:var(--bone) }
.slo{ color:var(--dim) }
.shi{ color:var(--dim) }
.sok{ color:var(--ok) }
.snote{ margin-top:16px; font-size:.75rem; color:var(--ghost); line-height:1.65 }

.solve__table{ margin-top:30px; border:1px solid var(--rule); border-radius:var(--r); background:var(--ink-1); overflow:hidden }
.solve__table .solve__head{ padding:18px 22px 0; margin-bottom:14px }
.solve__table .reftable{ min-width:520px }
.solve__table .reftable th{ background:var(--ink-1) }
.solve__table .reftable td{ font-size:.78rem }
.solve__table .reftable td .num{ font-family:var(--mono); color:var(--gold, var(--red-2)); color:var(--red-2) }

@media (max-width:900px){
  .solve{ grid-template-columns:1fr }
}
@media (max-width:520px){
  .srow{ flex-direction:column; gap:.2em }
  .srow dt{ width:auto }
  .solve__in{ flex-wrap:wrap }
  .solve__in .btn{ width:100% }
}

/* a second deck line, quieter than the first */
.lede--sub{ margin-top:.85em; font-size:clamp(.9rem,1.2vw,.98rem); color:var(--faint) }
.h1{ font-size:clamp(1.8rem,3.35vw,2.9rem) }

/* ── the contract address ───────────────────────────────────────────── */
.ca{
  display:flex; align-items:center; gap:12px; margin-top:26px; min-width:0;
  border:1px solid var(--rule); border-left:2px solid var(--red);
  background:var(--ink-2); border-radius:0 var(--r) var(--r) 0;
  padding:10px 12px 10px 14px;
}
.ca__k{
  font-family:var(--mono); font-size:.58rem; letter-spacing:.2em; text-transform:uppercase;
  color:var(--red); flex:none;
}
.ca__v{
  font-family:var(--mono); font-size:.74rem; color:var(--bone); letter-spacing:-.01em;
  overflow-wrap:anywhere; min-width:0; flex:1;
}
.ca__copy{
  flex:none; background:none; border:1px solid var(--rule-3); border-radius:2px;
  color:var(--dim); cursor:pointer; padding:6px 12px;
  font-family:var(--mono); font-size:.6rem; letter-spacing:.14em; text-transform:uppercase;
  transition:all .2s var(--ease); white-space:nowrap;
}
.ca__copy:hover{ border-color:var(--red); color:var(--red-2) }
.ca__copy:active{ transform:scale(.96) }
.ca__copy.is-done{ border-color:var(--ok); color:var(--ok) }
.ca__copy:focus-visible{ outline:2px solid var(--red); outline-offset:2px }

.foot__x{
  display:inline-block; margin-top:12px; font-family:var(--mono); font-size:.76rem;
  color:var(--dim); border-bottom:1px solid transparent; transition:all .2s var(--ease);
}
.foot__x:hover{ color:var(--red-2); border-color:var(--red) }
.ca--foot{ margin-top:0; border-left-width:1px }
.ca--foot .ca__v{ font-size:.7rem }


@media (max-width:520px){
  .ca{ flex-wrap:wrap }
  .ca__v{ flex:1 1 100%; order:3; font-size:.7rem }
  .ca__copy{ margin-left:auto }
}