diff --git a/index.html b/index.html
index 2175cf9b..4001d7b5 100644
--- a/index.html
+++ b/index.html
@@ -30,10 +30,12 @@
.challenge-feature{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:clamp(22px,5vw,65px);align-items:center;position:relative;overflow:hidden;margin:0 0 38px;padding:clamp(25px,4vw,43px);border:1px solid rgba(242,206,114,.43);border-radius:27px;background:radial-gradient(circle at 100% 0,rgba(255,102,136,.14),transparent 44%),linear-gradient(135deg,#172238,#0a1020 66%);box-shadow:0 24px 70px rgba(0,0,0,.2)}.challenge-feature::before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,transparent 49.8%,rgba(242,206,114,.04) 50%,transparent 50.2%);background-size:29px 29px}.challenge-feature>*{position:relative}.challenge-kicker{color:var(--gold);font:850 .72rem ui-monospace,monospace;letter-spacing:.15em}.challenge-feature h2{max-width:560px;margin:11px 0 14px;font-size:clamp(2rem,4.5vw,3.65rem);line-height:1.04;letter-spacing:-.05em}.challenge-feature h2 em{font-style:normal;color:var(--gold)}.challenge-feature p{max-width:560px;margin:0;color:#ccd7e5}.challenge-feature .challenge-link{display:inline-flex;margin-top:21px;padding:11px 17px;border-radius:999px;background:var(--gold);color:#10151f;font-weight:900;text-decoration:none}.challenge-feature .challenge-link:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}.challenge-limit{display:block;max-width:520px;margin-top:13px;color:#aab9c9;font-size:.76rem}.challenge-ledger{padding:18px;border:1px solid rgba(255,255,255,.16);border-radius:19px;background:#050c19b8;box-shadow:0 18px 50px #0005}.ledger-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:13px;color:#9db9c5;font:800 .67rem ui-monospace,monospace;letter-spacing:.12em}.ledger-head b{color:var(--cyan)}.ledger-step{display:grid;grid-template-columns:1fr auto;gap:4px 12px;padding:17px;border:1px solid rgba(156,255,176,.34);border-radius:13px;background:rgba(156,255,176,.065)}.ledger-step span{color:#c0cfdb;font:800 .69rem ui-monospace,monospace;letter-spacing:.11em}.ledger-step strong{color:var(--green);font:900 .95rem ui-monospace,monospace}.ledger-step small{grid-column:1/-1;color:#d0dce5;font:.73rem/1.5 ui-monospace,monospace}.ledger-step.changed{border-color:rgba(255,102,136,.42);background:rgba(255,102,136,.08)}.ledger-step.changed strong{color:#ff9bb0}.ledger-pivot{display:flex;align-items:center;gap:11px;margin:10px 0;color:var(--gold);font:800 .69rem ui-monospace,monospace;letter-spacing:.09em}.ledger-pivot::before,.ledger-pivot::after{content:"";height:1px;flex:1;background:rgba(242,206,114,.3)}
.probe-switch{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 10px}.probe-switch button{flex:1;min-width:150px;padding:9px 10px;border:1px solid rgba(125,249,255,.25);border-radius:9px;background:rgba(125,249,255,.045);color:#b8d7df;font:800 .75rem ui-sans-serif,system-ui;cursor:pointer}.probe-switch button[aria-pressed=true]{border-color:var(--gold);background:rgba(242,206,114,.13);color:var(--gold)}.probe-switch button:focus-visible,.predict-choices button:focus-visible{outline:3px solid var(--cyan);outline-offset:2px}.predict-label{display:block;margin:18px 0 8px;color:#e5eff3;font:800 .73rem ui-monospace,monospace;letter-spacing:.08em}.predict-choices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.predict-choices button{min-width:0;padding:11px 7px;border:1px solid rgba(125,249,255,.35);border-radius:10px;background:#102434;color:#c8eced;font:800 .72rem ui-sans-serif,system-ui;cursor:pointer}.predict-choices button[aria-pressed=true]{border-color:var(--cyan);background:rgba(125,249,255,.17);color:#fff}.predict-feedback{margin:13px 0 9px;padding:11px 13px;border-left:3px solid var(--green);border-radius:7px;background:rgba(156,255,176,.08);color:#d5f0dd;font-size:.8rem}.predict-feedback[data-correct=false]{border-color:var(--gold);background:rgba(242,206,114,.09);color:#f5dfad}.ledger-step[hidden],.predict-feedback[hidden]{display:none}.ledger-note{display:block;margin-top:12px;color:#9db1c3;font-size:.72rem}
@media(max-width:900px){.hero{grid-template-columns:1fr;padding-top:42px}.hero h1{max-width:690px}.proof-console{max-width:690px}.paths{grid-template-columns:1fr 1fr}}
- @media(max-width:800px){.navlinks .ghost{display:none}.compare,.lab,.principles,.paths,.continuity-steps,.challenge-feature,.atlas-list{grid-template-columns:1fr}.section-head{align-items:start;flex-direction:column}.hero h1{font-size:clamp(3.2rem,12vw,5rem)}.console-foot,.scope-teaser{align-items:flex-start;flex-direction:column}}
+ @media(max-width:800px){.navlinks .ghost{display:none}.compare,.lab,.principles,.paths,.continuity-steps,.challenge-feature,.builder-invite,.atlas-list{grid-template-columns:1fr}.section-head{align-items:start;flex-direction:column}.hero h1{font-size:clamp(3.2rem,12vw,5rem)}.console-foot,.scope-teaser{align-items:flex-start;flex-direction:column}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.element{transition:none}}
.boundary-switch{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:9px;background:#06111e;border-bottom:1px solid var(--line)}.boundary-switch button{padding:11px 8px;border:1px solid transparent;border-radius:11px;background:transparent;color:#a9bfce;font:800 .77rem ui-sans-serif,system-ui;cursor:pointer}.boundary-switch button[aria-pressed=true]{border-color:rgba(125,249,255,.43);background:rgba(125,249,255,.12);color:var(--cyan)}.boundary-switch button:focus-visible{outline:3px solid var(--gold);outline-offset:1px}.console-body[hidden]{display:none}.action-target{padding:15px;border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.035)}.action-target span{display:block;color:var(--muted);font-size:.76rem}.action-target strong{display:block;margin-top:5px;color:var(--red);font:700 clamp(.91rem,1.3vw,1.03rem) ui-monospace,monospace;overflow-wrap:anywhere}.action-target.approved strong{color:var(--green)}.action-rule{margin:15px 0;color:#a9c8ce;font:12px/1.5 ui-monospace,monospace}.action-rule b{color:var(--gold);font-weight:700}.verdict.approval{border-color:rgba(242,206,114,.45);background:rgba(242,206,114,.1)}.verdict.approval strong{color:var(--gold);font-size:clamp(1rem,1.9vw,1.35rem)}.action-count{margin:8px 2px 0;color:var(--muted);font-size:.77rem}.action-case button:focus-visible{outline:3px solid var(--gold);outline-offset:2px}.home-evidence{margin-top:12px;padding:12px 14px;border:1px solid rgba(125,249,255,.24);border-radius:11px;background:rgba(0,0,0,.2)}.home-evidence span{display:block;color:var(--cyan);font:800 .65rem ui-monospace,monospace;letter-spacing:.13em}.home-evidence code{display:block;margin:7px 0;color:#d8f5f7;font:11px/1.45 ui-monospace,monospace;overflow-wrap:anywhere}.home-evidence small{color:var(--muted);font-size:.72rem}.gate-slot{min-height:66px;display:grid;place-items:center;margin-top:12px;border:1px dashed rgba(125,249,255,.3);border-radius:11px;color:var(--muted);font-size:.77rem;text-align:center;padding:11px}.gate-slot aml-gate[hidden],#hero-gate-placeholder[hidden]{display:none}.gate-slot aml-gate button{padding:11px 16px;background:var(--cyan);color:#06111e;border:0;border-radius:9px;font:800 .82rem ui-sans-serif,system-ui}.gate-event{margin:7px 0 0;color:#a9c8ce;font:11px ui-monospace,monospace}
.action-trace{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:5px;margin:13px 0 3px}.trace-step{position:relative;min-width:0;padding:10px 7px;border:1px solid rgba(125,249,255,.25);border-radius:10px;background:linear-gradient(160deg,rgba(125,249,255,.1),rgba(125,249,255,.025))}.trace-step:not(:last-child)::after{content:"→";position:absolute;z-index:1;right:-9px;top:50%;transform:translateY(-50%);color:var(--cyan);font-weight:900}.trace-step span{display:block;color:#91adb9;font:800 .57rem ui-monospace,monospace;letter-spacing:.08em}.trace-step b{display:block;margin-top:4px;color:#e7fbff;font:800 .7rem/1.25 ui-sans-serif,system-ui;overflow-wrap:anywhere}.trace-step[data-stage=decision]{border-color:rgba(255,102,136,.53);background:rgba(255,102,136,.12)}.trace-step[data-stage=decision] b{color:#ff9bb0}.action-trace[data-result=approval] .trace-step[data-stage=decision]{border-color:rgba(242,206,114,.5);background:rgba(242,206,114,.12)}.action-trace[data-result=approval] .trace-step[data-stage=decision] b{color:var(--gold)}.action-trace[data-result=pending] .trace-step[data-stage=decision],.action-trace[data-result=unavailable] .trace-step[data-stage=decision]{border-color:var(--line);background:rgba(255,255,255,.035)}.action-trace[data-result=pending] .trace-step[data-stage=decision] b,.action-trace[data-result=unavailable] .trace-step[data-stage=decision] b{color:var(--muted)}.trace-step[data-stage=dispatch]{border-style:dashed;border-color:rgba(255,255,255,.22);background:rgba(255,255,255,.025)}.trace-step[data-stage=dispatch] b{color:#b7c6d2}
+ .builder-invite{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(290px,.9fr);align-items:center;gap:clamp(22px,5vw,68px);margin:0 0 38px;padding:clamp(24px,4vw,42px);border:1px solid rgba(125,249,255,.4);border-radius:27px;background:radial-gradient(circle at 95% 0,rgba(125,249,255,.15),transparent 45%),linear-gradient(125deg,#102139,#09111f 68%);box-shadow:0 24px 70px #0004}.builder-kicker{color:var(--cyan);font:850 .72rem ui-monospace,monospace;letter-spacing:.15em}.builder-invite h2{margin:10px 0 12px;font-size:clamp(2rem,4.4vw,3.45rem);line-height:1.05;letter-spacing:-.055em}.builder-invite h2 em{font-style:normal;color:var(--cyan)}.builder-invite p{max-width:610px;color:#cbd9e6}.builder-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.builder-actions a{padding:11px 16px;border-radius:999px;font-weight:850;text-decoration:none}.builder-actions a:first-child{background:var(--cyan);color:#07141b}.builder-actions a:last-child{border:1px solid rgba(125,249,255,.4);color:#ddf8fa}.builder-actions a:focus-visible{outline:3px solid var(--gold);outline-offset:3px}.builder-score{padding:23px;border:1px solid rgba(125,249,255,.25);border-radius:19px;background:rgba(3,11,23,.75)}.builder-score>span{display:block;margin-bottom:17px;color:#9bc5cf;font:800 .67rem ui-monospace,monospace;letter-spacing:.12em}.score-row{display:grid;grid-template-columns:1fr auto;gap:7px 14px;margin:0 0 21px}.score-row:last-of-type{margin-bottom:12px}.score-row b{font-size:.86rem}.score-row strong{font:900 1rem ui-monospace,monospace;color:var(--gold)}.score-row.reference strong{color:var(--green)}.score-track{grid-column:1/-1;height:8px;border-radius:99px;background:#26384a;overflow:hidden}.score-track i{display:block;height:100%;width:68.42%;border-radius:inherit;background:linear-gradient(90deg,#f7a968,var(--gold))}.score-row.reference .score-track i{width:100%;background:linear-gradient(90deg,#75e9dd,var(--green))}.builder-score small{display:block;color:#a8bbc9;font-size:.73rem;line-height:1.5}
+ @media(max-width:800px){.builder-invite{grid-template-columns:1fr}}
@media(max-width:520px){.boundary-switch button{font-size:.7rem}.verdict.approval strong{font-size:1rem}.console-body{padding:17px}.action-trace{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.trace-step:nth-child(2)::after{content:"↙";right:auto;left:7px;top:auto;bottom:-13px}.trace-step:nth-child(3)::after{right:-11px}}
@@ -88,6 +90,11 @@
AI proposes.
The host decides.
06 / CHALLENGEBreak a saved run ↗Open a checked example, change one saved outcome, and watch the claim fail.
+
+ FOR DEVELOPERS / EXECUTABLE CHALLENGECan your adapter survive the next case?
Start with one agent tool call. Run your own host adapter against 13 published cases, then six seeded changes that test whether it actually binds the proposal, rule, and outcome.
+ WHY A PERFECT PUBLIC SCORE ISN'T ENOUGHCanned answer adapter13 / 19
Project-authored examples, executed locally. Scores do not certify an outside implementation or a real tool deployment.
+
+
THE RECORD CAN DISAGREECan you find the fracture?
Choose one controlled change to a captured run. Predict which check catches it, then reveal the answer and reproduce it in your browser.
Reproduce this change ↗A project-authored, unsigned consistency check. It cannot prove that a historical event occurred.