:root{color-scheme:dark;--bg:#071322;--navy:#0d2033;--line:rgba(154,187,203,.15);--text:#e8f0f6;--muted:#9cb0c1;--cyan:#7ee7e7;--blue:#2e8eae;--amber:#f4c782;--purple:#a7a1fb;--panel:#0b2033}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}a{color:inherit}button{font:inherit}.outer{overflow:hidden}.skip{position:absolute;top:-4rem;left:1rem;background:white;color:#000;padding:.5rem}.skip:focus{top:1rem;z-index:10}.mast{height:90px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:0 max(5vw,24px);position:relative;z-index:2}.wordmark{display:inline-flex;gap:13px;align-items:center;text-decoration:none}.brand-symbol{font-size:18px;font-weight:900;letter-spacing:-.1em;border:1px solid #4a8aa0;border-radius:11px;padding:9px 11px;line-height:1}.brand-symbol 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/* DF-073: bounded replay lab with readable desktop and mobile controls. */
.attack-lab{padding-top:42px;padding-bottom:42px}
.attack-lab h1{font-size:clamp(34px,3.4vw,52px);margin-bottom:18px}
.attack-lab .eyebrow{margin-bottom:18px}
.attack-lab .subtitle{max-width:900px;font-size:16px;margin-bottom:15px}
.attack-lab .panel-blurb{max-width:1100px}
.attack-lab label{display:block;font-size:13px;margin:14px 0 8px}
.attack-lab select{display:block;max-width:100%;width:520px;font:inherit;background:#10273b;color:#eff8ff;border:1px solid #7390ad;padding:12px;border-radius:6px;margin-bottom:22px}
.attack-lab select:focus-visible{outline:3px solid #9bceff;outline-offset:3px}
.attack-lab .evidence-grid{grid-template-columns:1fr 1fr}
.attack-lab .panel h2{font-size:24px;line-height:1.2;margin:0}
.attack-lab .proof-box strong{font-size:20px;overflow-wrap:anywhere}
.attack-lab li{margin-bottom:14px;font-size:15px;overflow-wrap:anywhere}
.attack-lab .panel p{font-size:13px}
.attack-lab #lab-integrity{overflow-wrap:anywhere;margin-top:20px;font-size:11px}
@media(max-width:780px){.attack-lab .evidence-grid{grid-template-columns:1fr}.attack-lab .panel h2{font-size:20px}.attack-lab .panel{min-width:0}.attack-lab .mast{flex-wrap:wrap}}
/* DF-071: browser-calculated what-if tool; deliberately separated from source evidence. */
.hyp-workbench{margin-top:26px;padding:28px;border:1px solid #55739c;border-radius:10px;background:linear-gradient(145deg,#12243a,#1a2241);display:grid;gap:18px}
.hyp-workbench h3{font-size:clamp(20px,3vw,29px);margin:6px 0 12px}
.hyp-workbench p{font-size:13px;color:#c1d2e0;line-height:1.65;margin:0}
.hyp-controls{display:flex;flex-wrap:wrap;align-items:end;gap:12px}
.hyp-controls label{display:grid;gap:7px;font-size:12px;color:#e3eefe;font-weight:700}
.hyp-controls input{border:1px solid #7390ad;background:#091b30;color:#fff;padding:12px;border-radius:6px;min-width:160px;font:inherit;min-height:44px}
.hyp-controls input:focus-visible,.hyp-controls button:focus-visible{outline:3px solid #9bceff;outline-offset:3px}
.hyp-hint{font-size:11px;color:#b9ccdb;align-self:center;max-width:180px}
.hyp-controls button{border:1px solid #6994b2;padding:13px 16px;min-height:44px;cursor:pointer;font:inherit;border-radius:6px}
.hyp-result{background:#0a1d30;border:1px solid #455f77;border-radius:8px;padding:15px 19px;min-height:95px}
.hyp-result.good{border-color:#3cbaa8}.hyp-result.fail{border-color:#d68a75}
.hyp-result p{padding:4px 0;overflow-wrap:anywhere}
.hyp-result .hyp-kicker{font-weight:800;letter-spacing:.12em;font-size:11px;color:#79e5d4}
.hyp-result .hyp-scope{color:#f1cbaa;font-size:11px}
@media(max-width:670px){.hyp-workbench{padding:20px}.hyp-controls{display:grid;grid-template-columns:1fr}.hyp-controls input{width:100%}}

.doc-paper li.source-literal-focus{background:#123c44;border-left:3px solid #2fe1d0;padding:7px 9px;color:#f4fffc;border-radius:3px}

/* DF-071 transparent Meta provenance — no inference is invoked from the browser. */
.provenance-panel{border-top:1px solid #315067;border-bottom:1px solid #315067;background:#0b2033;padding:70px max(5vw,20px)}
.provenance-head{max-width:1280px;margin:0 auto 25px}
.provenance-head h2{font-size:clamp(23px,3.8vw,42px);line-height:1.2;letter-spacing:-.035em;margin:5px 0 14px}
.provenance-head p:not(.eyebrow){color:#acc4d0;font-size:14px;line-height:1.6}
.provenance-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.provenance-grid article{border:1px solid #3d6176;border-radius:10px;background:#122b40;padding:22px;display:flex;flex-direction:column;gap:13px}
.provenance-grid .prov-kicker{font-size:11px;letter-spacing:.1em;color:#83dbe6;font-weight:800}
.provenance-grid h3{font-size:20px;margin:0;line-height:1.2}
.provenance-grid p{font-size:12px;color:#bad0dc;line-height:1.7;margin:0;flex:1}
.provenance-grid b{font-size:11px;color:#efca94;font-weight:800}
@media(max-width:900px){.provenance-grid{grid-template-columns:1fr}}