:root{
  --paper:#f2f1ed;
  --surface:#ffffff;
  --surface-soft:#f8f8f6;
  --ink:#141512;
  --text:#343731;
  --muted:#6f746a;
  --faint:#9aa096;
  --line:#dedfd8;
  --line-strong:#bfc2b8;
  --accent:#214b3d;
  --accent-soft:#edf4f0;
  --open:#9b5c08;
  --open-soft:#fff5df;
  --safe:#126943;
  --safe-soft:#eaf6ef;
  --unsafe:#a4382d;
  --unsafe-soft:#fff0ed;
  --verified:#355c8f;
  --verified-soft:#edf3fb;
  --radius:10px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  --serif:Georgia,"Times New Roman",serif;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--paper);color:var(--text);font-family:var(--sans);font-size:15px;line-height:1.5}
button,input,select{font:inherit}
button{cursor:pointer}
a{color:inherit}
button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid rgba(33,75,61,.22);outline-offset:2px}
.instrument-shell{min-height:100vh}
.topbar{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 30px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30;backdrop-filter:blur(10px)}
.identity{display:flex;align-items:center;gap:13px;text-decoration:none;min-width:0}
.risu-mark{font:700 1rem var(--serif);letter-spacing:.08em;color:#111}
.identity-copy{display:block;padding-left:13px;border-left:1px solid var(--line)}
.identity-copy strong,.identity-copy small{display:block}.identity-copy strong{font-size:.9rem;color:var(--ink)}.identity-copy small{font-size:.67rem;color:var(--muted);margin-top:1px}
.top-status{display:flex;align-items:center;gap:14px;color:var(--muted);font-size:.72rem;white-space:nowrap}
.local-state{display:inline-flex;align-items:center;gap:7px}.local-state i{width:7px;height:7px;border-radius:50%;background:#229466;box-shadow:0 0 0 3px #e6f5ed}
.engine-state{font-family:var(--mono);font-size:.66rem;color:var(--faint)}
.quiet-link{text-decoration:none;border-bottom:1px solid var(--line-strong)}.quiet-link:hover{border-color:var(--ink);color:var(--ink)}
.commandbar{min-height:58px;display:flex;align-items:center;gap:14px;padding:9px 30px;background:#fbfbf9;border-bottom:1px solid var(--line);position:sticky;top:68px;z-index:25}
.primary-action,.quiet-button{height:38px;border-radius:7px;font-weight:680}
.primary-action{border:1px solid #14261f;background:#14261f;color:#fff;padding:0 16px}.primary-action:hover:not(:disabled){background:#203d33}.primary-action:disabled,.quiet-button:disabled{opacity:.42;cursor:not-allowed}
.quiet-button{border:1px solid var(--line-strong);background:#fff;color:var(--text);padding:0 13px}.quiet-button:hover:not(:disabled){border-color:#8f958b;color:var(--ink)}
.record-identity{min-width:0;flex:1;color:var(--muted);font-size:.73rem;overflow:hidden}.record-identity span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.command-actions{display:flex;gap:8px}
.modebar{height:48px;display:flex;align-items:end;padding:0 30px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:126px;z-index:24;overflow-x:auto}
.mode{height:48px;border:0;border-bottom:2px solid transparent;background:transparent;color:var(--muted);padding:0 16px;font-size:.76rem;font-weight:680;white-space:nowrap}.mode:hover:not(:disabled){color:var(--ink)}.mode.active{color:var(--ink);border-bottom-color:var(--accent)}.mode:disabled{opacity:.35;cursor:not-allowed}
.workspace{max-width:1440px;margin:0 auto;padding:44px 42px 80px;position:relative}.welcome,.view{display:none}.welcome.active,.view.active{display:block}
.welcome{grid-template-columns:minmax(0,1.4fr) minmax(300px,.6fr);gap:44px;align-items:start}.welcome.active{display:grid}
.kicker{margin:0 0 10px;color:var(--accent);font-size:.68rem;text-transform:uppercase;letter-spacing:.13em;font-weight:760}
.welcome h1,.view-head h1{font-family:var(--serif);font-weight:500;color:var(--ink);letter-spacing:-.045em;line-height:1.02;margin:0}.welcome h1{font-size:clamp(3rem,6vw,6.2rem);max-width:980px}.welcome-lede{max-width:850px;font-size:1.06rem;color:#454941;margin:24px 0 0}
.welcome-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:29px}.large-action,.secondary-action{min-width:260px;min-height:72px;border-radius:9px;padding:15px 17px;text-align:left;text-decoration:none}.large-action{border:1px solid #14261f;background:#14261f;color:white}.large-action:hover:not(:disabled){background:#203d33}.large-action:disabled{opacity:.5;cursor:not-allowed}.secondary-action{border:1px solid var(--line-strong);background:#fff}.large-action strong,.large-action span,.secondary-action strong,.secondary-action span{display:block}.large-action strong,.secondary-action strong{font-size:.88rem}.large-action span{color:#bfcbc6}.secondary-action span{color:var(--muted)}.large-action span,.secondary-action span{font-size:.7rem;margin-top:3px}
.welcome-ledger{background:#fff;border-top:2px solid var(--ink);padding:3px 0 0}.ledger-row{display:grid;grid-template-columns:130px 1fr;gap:18px;padding:14px 0;border-bottom:1px solid var(--line)}.ledger-row span{font-size:.65rem;text-transform:uppercase;letter-spacing:.09em;color:var(--muted)}.ledger-row strong{font-size:.76rem;color:var(--text);font-weight:650}
.reference-section{grid-column:1/-1;margin-top:34px;padding-top:34px;border-top:1px solid var(--line-strong)}
.section-heading,.view-head{display:flex;justify-content:space-between;gap:30px;align-items:end}.section-heading h2{font:500 clamp(2rem,4vw,3.8rem)/1.04 var(--serif);letter-spacing:-.04em;color:var(--ink);margin:0}.section-heading>p,.view-head>p{max-width:540px;margin:0;color:var(--muted);font-size:.82rem}.reference-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:28px;border-top:1px solid var(--ink);border-left:1px solid var(--line)}.reference-card{min-height:145px;border:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.45);text-align:left;padding:22px}.reference-card:hover{background:#fff}.reference-card span{display:block;color:var(--accent);font-size:.62rem;letter-spacing:.08em;font-weight:770}.reference-card strong{display:block;color:var(--ink);font:500 1.25rem var(--serif);margin-top:17px}.reference-card small{display:block;color:var(--muted);font-size:.72rem;margin-top:7px}
.view-head{padding:8px 0 30px;border-bottom:1px solid var(--line-strong);margin-bottom:24px}.view-head h1{font-size:clamp(2.5rem,4vw,4.4rem)}
.decision-hero{display:grid;grid-template-columns:minmax(0,1fr) 300px;border-top:2px solid var(--ink);border-bottom:1px solid var(--line);background:#fff}.decision-main{padding:30px 32px 32px}.decision-side{padding:30px;border-left:1px solid var(--line);display:grid;align-content:start;gap:15px}.status-line{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.status-chip{display:inline-flex;align-items:center;min-height:28px;padding:5px 9px;border-radius:999px;font-size:.65rem;letter-spacing:.06em;font-weight:780}.status-chip.open{background:var(--open-soft);color:var(--open)}.status-chip.safe{background:var(--safe-soft);color:var(--safe)}.status-chip.unsafe{background:var(--unsafe-soft);color:var(--unsafe)}.status-chip.verified{background:var(--verified-soft);color:var(--verified)}.status-chip.neutral{background:#eff0ed;color:#61665f}
.decision-main h1{font:500 clamp(2.4rem,4.4vw,5.1rem)/1.01 var(--serif);letter-spacing:-.045em;color:var(--ink);margin:16px 0 15px;max-width:980px}.decision-main>p{max-width:860px;margin:0;color:var(--muted);font-size:.95rem}.decision-question{margin-top:24px;padding-top:18px;border-top:1px solid var(--line);font-size:.78rem;color:var(--text)}
.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:0}.metric{padding:11px 0;border-bottom:1px solid var(--line)}.metric span,.mini-label{display:block;color:var(--muted);font-size:.62rem;text-transform:uppercase;letter-spacing:.08em}.metric strong{display:block;color:var(--ink);font-size:1.15rem;margin-top:4px}.identity-value{font-family:var(--mono);font-size:.67rem!important;overflow-wrap:anywhere}
.two-up{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:20px}.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}.panel.flat{border-radius:0}.panel-head{display:flex;justify-content:space-between;gap:18px;align-items:start;margin-bottom:16px}.panel-head h2,.panel-head h3{margin:4px 0 0;color:var(--ink);letter-spacing:-.025em}.panel-head h2{font:500 1.6rem var(--serif)}.panel-head h3{font-size:1rem}.panel-head>span{font-size:.66rem;color:var(--muted)}
.next-step{padding:16px 0;border-top:1px solid var(--line)}.next-step:first-child{border-top:0;padding-top:0}.next-step strong{display:block;color:var(--ink);font-size:.86rem}.next-step p{margin:5px 0 0;color:var(--muted);font-size:.76rem}.kind-tag{display:inline-flex;margin-top:8px;padding:3px 6px;border:1px solid var(--line);font-size:.62rem;color:var(--muted);border-radius:4px}
.witness-pair{display:grid;grid-template-columns:1fr 42px 1fr;gap:8px;align-items:stretch}.world{border:1px solid var(--line);background:var(--surface-soft);padding:14px}.world header{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:.65rem}.world strong{display:block;font:500 1.35rem var(--serif);color:var(--ink);margin-top:14px}.world small{display:block;color:var(--muted);margin-top:3px}.versus{display:grid;place-items:center;color:var(--faint);font-size:.65rem;font-weight:800}.diff-table{margin-top:12px;border-top:1px solid var(--line)}.diff-row{display:grid;grid-template-columns:minmax(150px,1fr) minmax(80px,.5fr) minmax(80px,.5fr);gap:10px;padding:8px 0;border-bottom:1px solid #eeefeb;font-size:.72rem}.diff-row b{font-weight:650}.code-value{font-family:var(--mono);font-size:.67rem;overflow-wrap:anywhere}
.challenge-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);gap:18px}.challenge-stack{display:grid;gap:18px}.basis-family{display:grid;gap:8px}.basis-button{width:100%;border:1px solid var(--line);background:#fff;text-align:left;padding:13px 14px;border-radius:7px}.basis-button:hover,.basis-button.active{border-color:#8fa59b;background:var(--accent-soft)}.basis-button span{display:block;color:var(--muted);font-size:.62rem}.basis-button strong{display:block;color:var(--ink);font-size:.78rem;margin-top:4px}.certificate-status{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:13px}.certificate-row{padding:11px 0;border-top:1px solid var(--line)}.certificate-row strong{display:block;font-size:.78rem;color:var(--ink)}.certificate-row p{margin:5px 0 0;color:var(--muted);font-size:.7rem}.good-text{color:var(--safe)}.bad-text{color:var(--unsafe)}
.evidence-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.evidence-control{border:1px solid var(--line);background:var(--surface-soft);padding:11px}.evidence-control label{display:block;font-size:.7rem;color:var(--ink);font-weight:650;margin-bottom:7px}.evidence-control select{width:100%;height:34px;border:1px solid var(--line-strong);background:#fff;border-radius:6px;padding:0 8px;color:var(--text);font-size:.73rem}.evidence-note{margin-top:12px;color:var(--muted);font-size:.7rem}
.route-summary{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:start;background:#fff;border-top:2px solid var(--ink);border-bottom:1px solid var(--line);padding:25px 28px}.route-summary strong{display:block;color:var(--ink);font:500 1.55rem var(--serif)}.route-summary p{margin:7px 0 0;color:var(--muted);font-size:.78rem}.route-cost{text-align:right}.route-cost span{display:block;color:var(--muted);font-size:.62rem;text-transform:uppercase}.route-cost b{display:block;color:var(--ink);font-size:1.55rem}.route-tree{margin-top:18px;background:#fff;border:1px solid var(--line);padding:22px}.route-node{margin-left:10px;padding:7px 0 7px 18px;border-left:1px solid var(--line-strong)}.route-node-card{display:inline-block;min-width:240px;max-width:680px;border:1px solid var(--line);background:var(--surface-soft);padding:11px 13px}.route-node-card strong{display:block;color:var(--ink);font-size:.78rem}.route-node-card span{display:block;color:var(--muted);font-size:.66rem;margin-top:3px}.route-branch{margin:5px 0 0 8px;color:var(--muted);font-size:.65rem;font-weight:650}
.assurance-ladder{background:#fff;border-top:2px solid var(--ink)}.assurance-row{display:grid;grid-template-columns:170px 130px 1fr;gap:18px;padding:16px 18px;border-bottom:1px solid var(--line);align-items:start}.assurance-row span{font-size:.66rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}.assurance-row b{font-size:.72rem}.assurance-row p{margin:0;color:var(--muted);font-size:.74rem}.assurance-row .established{color:var(--safe)}.assurance-row .qualified{color:var(--open)}.assurance-row .not-established{color:#6f746a}
.world-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px}.world-card{border:1px solid var(--line);background:var(--surface-soft);padding:11px}.world-card header{display:flex;justify-content:space-between;font-size:.68rem}.world-fact{display:flex;justify-content:space-between;gap:9px;padding:5px 0;border-top:1px solid #e8e9e4;font-size:.65rem}.world-fact span{color:var(--muted)}.world-fact code{font-family:var(--mono);font-size:.62rem}
.compare-toolbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.compare-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px}.compare-card{background:#fff;border-top:2px solid var(--ink);padding:22px;border-bottom:1px solid var(--line)}.compare-card h2{font:500 1.55rem var(--serif);margin:9px 0;color:var(--ink)}.compare-card p{color:var(--muted);font-size:.74rem}.compare-diff{grid-column:1/-1;background:#fff;border:1px solid var(--line);padding:20px}.compare-diff-row{display:grid;grid-template-columns:180px 1fr 42px 1fr;gap:14px;padding:11px 0;border-bottom:1px solid var(--line);align-items:center;font-size:.74rem}.compare-diff-row:last-child{border-bottom:0}.compare-diff-row>span:first-child{color:var(--muted);font-size:.65rem;text-transform:uppercase;letter-spacing:.06em}.compare-arrow{text-align:center;color:var(--faint)}
.source-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:18px}.kv{background:#fff;border-top:2px solid var(--ink)}.kv-row{display:grid;grid-template-columns:160px 1fr;gap:16px;padding:11px 14px;border-bottom:1px solid var(--line);font-size:.71rem}.kv-row span{color:var(--muted)}.kv-row b{font-weight:620;overflow-wrap:anywhere}.raw{margin:0;background:#141815;color:#d6ded8;min-height:330px;max-height:640px;overflow:auto;padding:17px;font:12px/1.55 var(--mono);white-space:pre-wrap;word-break:break-word}
.record-integrity{background:#fff;border-top:2px solid var(--ink);padding:28px}.record-integrity h1{font:500 2.6rem var(--serif);letter-spacing:-.04em;color:var(--ink);margin:12px 0}.record-integrity p{max-width:800px;color:var(--muted)}
.empty,.notice,.error{padding:16px;border:1px solid var(--line);background:#fff;color:var(--muted);font-size:.76rem}.notice{background:var(--accent-soft);border-color:#cddcd5}.error{background:var(--unsafe-soft);border-color:#efd0cb;color:#743028}
.drop-overlay{position:fixed;inset:164px 0 0;background:rgba(242,241,237,.95);display:none;place-items:center;z-index:40}.drop-overlay.active{display:grid}.drop-overlay div{border:1px dashed var(--line-strong);background:#fff;padding:38px 52px;text-align:center}.drop-overlay strong,.drop-overlay span{display:block}.drop-overlay span{color:var(--muted);font-size:.75rem;margin-top:5px}
.busy{position:fixed;inset:0;background:rgba(242,241,237,.78);display:grid;place-items:center;z-index:60}.busy[hidden]{display:none}.busy>div{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);padding:15px 18px}.busy strong{font-size:.75rem}.spinner{width:17px;height:17px;border-radius:50%;border:2px solid #d7d9d3;border-top-color:var(--accent);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
.toast{position:fixed;right:24px;bottom:24px;max-width:360px;background:#171915;color:#fff;padding:11px 14px;border-radius:7px;font-size:.72rem;opacity:0;transform:translateY(8px);pointer-events:none;transition:.16s ease;z-index:70}.toast.show{opacity:1;transform:none}
@media(max-width:980px){.top-status .engine-state{display:none}.workspace{padding:30px 22px 60px}.welcome.active{grid-template-columns:1fr}.reference-grid{grid-template-columns:repeat(2,1fr)}.two-up,.challenge-layout,.source-grid,.compare-layout{grid-template-columns:1fr}.compare-diff{grid-column:auto}.decision-hero{grid-template-columns:1fr}.decision-side{border-left:0;border-top:1px solid var(--line)}.assurance-row{grid-template-columns:130px 110px 1fr}.section-heading,.view-head{display:block}.section-heading>p,.view-head>p{margin-top:14px}.modebar{padding:0 22px}.commandbar{padding:9px 22px}}
@media(max-width:680px){.topbar{height:auto;min-height:62px;padding:10px 16px}.top-status{gap:8px}.top-status .quiet-link{display:none}.commandbar{top:62px;padding:8px 16px;flex-wrap:wrap}.record-identity{order:3;flex-basis:100%}.modebar{top:129px;padding:0 12px}.workspace{padding:25px 14px 50px}.welcome h1{font-size:3.1rem}.welcome-actions{display:grid}.large-action,.secondary-action{min-width:0}.reference-grid{grid-template-columns:1fr}.section-heading h2{font-size:2.35rem}.decision-main,.decision-side{padding:22px}.metric-row{grid-template-columns:1fr}.two-up{gap:12px}.witness-pair{grid-template-columns:1fr}.versus{height:24px}.evidence-controls{grid-template-columns:1fr}.assurance-row{grid-template-columns:1fr;gap:5px}.compare-diff-row{grid-template-columns:1fr;gap:5px}.compare-arrow{text-align:left}.kv-row{grid-template-columns:1fr;gap:4px}.drop-overlay{inset:177px 0 0}}

.space-top{margin-top:18px}.more-button{margin-top:12px}

/* Editorial spacing pass: keep dense evidence readable without turning the instrument into a dashboard. */
@media(min-width:981px){
  .welcome{grid-template-columns:minmax(0,1fr) minmax(360px,420px);gap:clamp(52px,5vw,82px)}
  .welcome-ledger{width:100%;max-width:420px;justify-self:end;background:transparent;border-top:2px solid var(--ink);padding:0}
  .ledger-row{grid-template-columns:minmax(118px,.8fr) minmax(0,1.2fr);gap:24px;padding:15px 16px;align-items:center}
  .ledger-row strong{line-height:1.36;padding-right:4px}
  .decision-side{padding:28px 30px}
  .assurance-row{grid-template-columns:176px 136px minmax(0,1fr);gap:22px;padding:17px 20px}
  .kv-row{grid-template-columns:168px minmax(0,1fr);gap:20px;padding:13px 18px}
  .compare-card{padding:24px 26px}
  .compare-diff{padding:22px 24px}
  .compare-diff-row{grid-template-columns:170px minmax(0,1fr) 38px minmax(0,1fr);gap:16px;padding:12px 0}
}
@media(min-width:981px) and (max-width:1180px){
  .welcome{grid-template-columns:minmax(0,1fr) minmax(330px,380px);gap:42px}
  .ledger-row{grid-template-columns:116px minmax(0,1fr);gap:18px;padding:14px 14px}
}
@media(max-width:980px){
  .welcome-ledger{background:transparent;border-top:2px solid var(--ink);padding:0}
  .ledger-row{grid-template-columns:150px minmax(0,1fr);gap:20px;padding:14px 12px}
}
@media(max-width:680px){
  .ledger-row{grid-template-columns:1fr;gap:4px;padding:13px 8px}
  .ledger-row strong{line-height:1.4}
}