.article-page{background:#fff}.ia-progress{position:fixed;z-index:140;top:0;left:0;width:100%;height:3px;background:transparent;pointer-events:none}.ia-progress span{display:block;width:0;height:100%;background:var(--green);transform-origin:left center}.ia-hero{position:relative;min-height:760px;display:flex;align-items:flex-end;color:#fff;background:var(--ink);overflow:hidden}.ia-hero-media,.ia-hero-media:before,.ia-hero-media:after{position:absolute;inset:0}.ia-hero-media img{width:100%;height:100%;object-fit:cover;object-position:center 44%}.ia-hero-media:before{content:"";z-index:1;background:linear-gradient(90deg,rgba(4,10,14,.97) 0%,rgba(4,10,14,.87) 48%,rgba(4,10,14,.48) 76%,rgba(4,10,14,.28) 100%)}.ia-hero-media:after{content:"";z-index:2;opacity:.22;background-image:linear-gradient(rgba(255,255,255,.1) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.1) 1px,transparent 1px);background-size:80px 80px;mask-image:linear-gradient(90deg,#000 0%,rgba(0,0,0,.8) 55%,transparent 95%)}.ia-hero-grid{position:relative;z-index:3;display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:80px;align-items:end;padding:152px 0 78px}.ia-hero-copy{max-width:820px}.ia-hero h1{max-width:820px;margin:24px 0 0;font-size:clamp(48px,6vw,82px);line-height:.98;font-weight:760;letter-spacing:0}.ia-deck{max-width:700px;margin:28px 0 0;color:rgba(255,255,255,.79);font-size:16px;line-height:1.72}.ia-meta{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:32px;color:rgba(255,255,255,.62);font-size:10px;font-weight:700;text-transform:uppercase}.ia-meta span+span:before{margin-right:24px;content:"/";color:rgba(255,255,255,.3)}.ia-hero-register{margin:0;border-top:1px solid rgba(255,255,255,.3)}.ia-hero-register div{padding:19px 0;border-bottom:1px solid rgba(255,255,255,.2)}.ia-hero-register dt{color:rgba(255,255,255,.55);font-size:9px;font-weight:800;text-transform:uppercase}.ia-hero-register dd{margin:7px 0 0;font-size:13px;line-height:1.45;font-weight:650}.ia-visual-note{position:absolute;z-index:4;right:24px;bottom:16px;max-width:460px;margin:0;color:rgba(255,255,255,.5);font-size:8px;line-height:1.45;text-align:right}.ia-mobile-toc{display:none}.ia-fact-band{padding:62px 0 66px;background:var(--mist);border-bottom:1px solid var(--line)}.ia-fact-head{display:grid;grid-template-columns:230px 1fr;gap:48px;align-items:start}.ia-fact-head h2{max-width:760px;margin:0;font-size:clamp(32px,4vw,50px);line-height:1.05}.ia-facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:46px;border-top:1px solid var(--line);border-left:1px solid var(--line)}.ia-facts>div{min-height:210px;padding:25px 26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}.ia-facts span,.ia-section-no{color:var(--green-dark);font-size:9px;font-weight:800;text-transform:uppercase}.ia-facts strong{display:block;margin-top:50px;font-size:17px}.ia-facts p{margin:10px 0 0;color:var(--muted);font-size:12px;line-height:1.68}.ia-layout{display:grid;grid-template-columns:210px minmax(0,760px);gap:86px;justify-content:center;align-items:start;padding-top:92px;padding-bottom:110px}.ia-toc{position:sticky;top:112px;padding-top:4px}.ia-toc>p{margin:0 0 16px;color:var(--muted);font-size:9px;font-weight:800;text-transform:uppercase}.ia-toc nav{display:grid;border-top:1px solid var(--line)}.ia-toc nav a{padding:12px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:10px;line-height:1.35;font-weight:700;transition:color .18s,padding-left .18s,border-color .18s}.ia-toc nav a:hover,.ia-toc nav a.is-active{padding-left:8px;color:var(--ink);border-bottom-color:var(--green)}.ia-copy{display:flex;align-items:center;gap:8px;width:100%;margin-top:22px;padding:10px 0;border:0;border-bottom:1px solid var(--line);background:transparent;font-size:10px;font-weight:800;text-align:left;cursor:pointer}.ia-copy:hover,.ia-copy:focus-visible{color:var(--green-dark);outline:none}.ia-copy-status{min-height:16px;margin:8px 0 0;color:var(--green-dark);font-size:9px}.ia-content{min-width:0}.ia-section{scroll-margin-top:112px;padding:0 0 76px;margin:0 0 74px;border-bottom:1px solid var(--line)}.ia-section:last-of-type{margin-bottom:0}.ia-section h2{max-width:700px;margin:18px 0 0;font-size:clamp(34px,4vw,50px);line-height:1.06}.ia-section h3{font-size:20px}.ia-section>p:not(.ia-section-no){margin:24px 0 0;color:var(--muted);font-size:15px;line-height:1.82}.ia-section .ia-lead{color:var(--ink-3);font-size:19px;line-height:1.68}.ia-section strong{color:var(--ink)}.ia-section blockquote{margin:36px 0 0;padding:27px 30px;border-left:3px solid var(--green);background:var(--mist)}.ia-section blockquote p{margin:0;color:var(--ink-3);font-size:18px;line-height:1.6;font-weight:600}.ia-points{display:grid;gap:0;margin:32px 0 0;padding:0;list-style:none;border-top:1px solid var(--line)}.ia-points li{padding:18px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:14px;line-height:1.7}.ia-callout{margin-top:34px;padding:25px 28px;color:#fff;background:var(--ink)}.ia-callout span{color:#7fd4b6;font-size:9px;font-weight:800;text-transform:uppercase}.ia-callout p{margin:12px 0 0;color:rgba(255,255,255,.73);font-size:13px;line-height:1.75}.ia-callout strong{color:#fff}.ia-network{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:34px;border-top:1px solid var(--line);border-left:1px solid var(--line)}.ia-network article{min-height:255px;padding:24px 22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.ia-network span,.ia-evidence-grid span{color:var(--green-dark);font-size:8px;font-weight:800;text-transform:uppercase}.ia-network h3{margin:58px 0 0}.ia-network p{margin:12px 0 0;color:var(--muted);font-size:11px;line-height:1.7}.ia-principles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:34px;background:var(--mist)}.ia-principles>div{min-height:160px;padding:24px;border-right:1px solid var(--line)}.ia-principles>div:last-child{border-right:0}.ia-principles span{font-size:28px;font-weight:800}.ia-principles p{margin:34px 0 0;color:var(--muted);font-size:11px;line-height:1.5}.ia-evidence-grid{display:grid;grid-template-columns:1fr 1fr;margin-top:36px}.ia-evidence-grid article{padding:28px 30px;border:1px solid var(--line)}.ia-evidence-grid article+article{border-left:0}.ia-evidence-grid .is-dark{color:#fff;border-color:var(--ink);background:var(--ink)}.ia-evidence-grid .is-dark span{color:#7fd4b6}.ia-evidence-grid ul{display:grid;gap:11px;margin:28px 0 0;padding-left:17px;color:var(--muted);font-size:12px;line-height:1.55}.ia-evidence-grid .is-dark ul{color:rgba(255,255,255,.72)}.ia-checklist{margin:34px 0 0;padding:0;list-style:none;border-top:1px solid var(--line)}.ia-checklist li{display:grid;grid-template-columns:42px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}.ia-checklist>li>span{color:var(--green-dark);font-size:10px;font-weight:800}.ia-checklist strong{font-size:15px}.ia-checklist p{margin:7px 0 0;color:var(--muted);font-size:12px;line-height:1.65}.ia-endnote{margin-top:80px;padding:48px;color:#fff;background:var(--ink)}.ia-endnote h2{max-width:650px;margin:18px 0 0;font-size:clamp(32px,4vw,48px);line-height:1.05}.ia-endnote>p:not(.iv2-eyebrow){max-width:600px;margin:20px 0 0;color:rgba(255,255,255,.68);font-size:14px;line-height:1.75}.ia-endnote>div{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.ia-endnote .iv2-btn-ghost{border-color:rgba(255,255,255,.4)}.ia-related{padding:96px 0 104px;background:var(--mist);border-top:1px solid var(--line)}.ia-related-head{display:flex;align-items:end;justify-content:space-between;gap:30px}.ia-related-head h2{margin:14px 0 0;font-size:clamp(34px,4vw,50px)}.ia-related-head>a{padding-bottom:6px;border-bottom:1px solid currentColor;font-size:11px;font-weight:800}.ia-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:44px;border-top:1px solid var(--line);border-left:1px solid var(--line)}.ia-related-grid>a{min-height:265px;padding:27px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;transition:transform .2s var(--ease),background .2s}.ia-related-grid>a:hover{z-index:1;transform:translateY(-4px);background:#fafffd}.ia-related-grid span{color:var(--green-dark);font-size:9px;font-weight:800;text-transform:uppercase}.ia-related-grid h3{margin:70px 0 0;font-size:23px;line-height:1.18}.ia-related-grid p{margin:14px 0 0;color:var(--muted);font-size:12px;line-height:1.65}
@media(max-width:1040px){.ia-hero-grid{grid-template-columns:minmax(0,1fr) 240px;gap:48px}.ia-layout{grid-template-columns:190px minmax(0,700px);gap:54px}.ia-hero h1{font-size:58px}}
@media(max-width:820px){.ia-hero{min-height:720px}.ia-hero-grid{grid-template-columns:1fr;padding-bottom:64px}.ia-hero-copy{max-width:680px}.ia-hero-register{display:none}.ia-visual-note{left:24px;right:24px;text-align:left}.ia-mobile-toc{display:block;position:relative;z-index:5;background:#fff;border-bottom:1px solid var(--line)}.ia-mobile-toc details{width:var(--shell);margin-inline:auto}.ia-mobile-toc summary{display:flex;align-items:center;justify-content:space-between;padding:18px 0;font-size:11px;font-weight:800;cursor:pointer}.ia-mobile-toc summary span{color:var(--green-dark);font-size:9px}.ia-mobile-toc details>div{display:grid;padding-bottom:18px}.ia-mobile-toc a{padding:11px 0;border-top:1px solid var(--line);color:var(--muted);font-size:11px}.ia-fact-head{grid-template-columns:1fr;gap:16px}.ia-facts{grid-template-columns:1fr}.ia-facts>div{min-height:0}.ia-facts strong{margin-top:30px}.ia-layout{display:block;padding-top:72px}.ia-toc{display:none}.ia-network{grid-template-columns:1fr}.ia-network article{min-height:0}.ia-network h3{margin-top:34px}.ia-related-grid{grid-template-columns:1fr}.ia-related-grid>a{min-height:220px}.ia-related-grid h3{margin-top:48px}}
@media(max-width:560px){.ia-hero{min-height:680px}.ia-hero-media img{object-position:64% center}.ia-hero-media:before{background:linear-gradient(90deg,rgba(4,10,14,.96),rgba(4,10,14,.75))}.ia-hero-grid{padding-top:128px;padding-bottom:58px}.ia-hero h1{font-size:44px;line-height:1.01}.ia-deck{font-size:14px;line-height:1.65}.ia-meta{gap:8px 16px}.ia-meta span+span:before{margin-right:16px}.ia-visual-note{bottom:12px;font-size:7px}.ia-fact-band{padding:54px 0}.ia-fact-head h2{font-size:34px}.ia-layout{padding-top:58px;padding-bottom:76px}.ia-section{padding-bottom:58px;margin-bottom:56px}.ia-section h2{font-size:34px}.ia-section .ia-lead{font-size:17px}.ia-section>p:not(.ia-section-no){font-size:14px}.ia-section blockquote{padding:23px 22px}.ia-section blockquote p{font-size:16px}.ia-principles{grid-template-columns:1fr}.ia-principles>div{min-height:130px;border-right:0;border-bottom:1px solid var(--line)}.ia-principles>div:last-child{border-bottom:0}.ia-principles p{margin-top:20px}.ia-evidence-grid{grid-template-columns:1fr}.ia-evidence-grid article+article{border-top:0;border-left:1px solid var(--ink)}.ia-endnote{margin-top:58px;padding:34px 26px}.ia-related{padding:72px 0}.ia-related-head{align-items:flex-start;flex-direction:column}.ia-related-grid{margin-top:34px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.ia-related-grid>a:hover{transform:none}}

/* Phase 4.2 regulation article */
.ia-reg-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:30px;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.ia-reg-grid article{min-height:250px;padding:27px 28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.ia-reg-grid h3{max-width:290px;margin:54px 0 0;font-size:22px;line-height:1.18}
.ia-reg-grid p{margin:15px 0 0;color:var(--muted);font-size:13px;line-height:1.72}
.ia-reg-grid p strong{color:var(--ink);font-weight:750}
.ia-status{display:inline-flex;align-items:center;min-height:24px;padding:0 9px;border:1px solid currentColor;color:var(--green-dark);font-size:8px;font-weight:800;text-transform:uppercase}
.ia-status.is-proposal{color:#8a5b00;background:#fff9e9}
.ia-status.is-reporting{color:#31547a;background:#f3f7fb}
.ia-status.is-current{background:#f2fbf7}
.ia-timeline{display:grid;gap:0;margin:30px 0 0;padding:0;list-style:none;border-top:1px solid var(--line)}
.ia-timeline li{display:grid;grid-template-columns:155px minmax(0,1fr);gap:28px;padding:24px 0;border-bottom:1px solid var(--line)}
.ia-timeline time{color:var(--green-dark);font-size:10px;font-weight:800;text-transform:uppercase}
.ia-timeline strong{font-size:15px}
.ia-timeline p{margin:7px 0 0;color:var(--muted);font-size:12px;line-height:1.65}
.ia-source-list{display:grid;margin:25px 0 0;padding:0;list-style:none;border-top:1px solid var(--line)}
.ia-source-list li{border-bottom:1px solid var(--line)}
.ia-source-list a{position:relative;display:grid;grid-template-columns:180px minmax(0,1fr);gap:24px;padding:17px 34px 17px 0;color:var(--ink)}
.ia-source-list a:after{position:absolute;right:3px;top:17px;content:"↗";color:var(--green-dark);font-size:13px}
.ia-source-list strong{font-size:11px}
.ia-source-list span{color:var(--muted);font-size:11px;line-height:1.5}
.ia-source-list a:hover strong,.ia-source-list a:focus-visible strong{color:var(--green-dark)}
.ia-source-list a:focus-visible{outline:2px solid var(--green);outline-offset:3px}
@media(max-width:820px){.ia-reg-grid{grid-template-columns:1fr}.ia-reg-grid article{min-height:0}.ia-reg-grid h3{margin-top:36px}.ia-source-list a{grid-template-columns:150px minmax(0,1fr)}}
@media(max-width:560px){.ia-reg-grid article{padding:24px 22px}.ia-reg-grid h3{font-size:20px}.ia-timeline li{grid-template-columns:1fr;gap:8px}.ia-source-list a{grid-template-columns:1fr;gap:6px;padding-right:30px}}


/* Phase 4.3 qualification and evidence articles */
.ia-compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:30px;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.ia-compare-grid article{min-height:230px;padding:27px 28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.ia-compare-grid h3{margin:48px 0 0;font-size:22px;line-height:1.2}.ia-compare-grid p{margin:14px 0 0;color:var(--muted);font-size:13px;line-height:1.72}
.ia-callout.is-caution{border-left-color:#b47a0a;background:#fff9e9}.ia-inline-link{color:var(--green-dark);font-weight:750;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.ia-dimension-list{display:grid;margin-top:32px;border-top:1px solid var(--line)}
.ia-dimension-list article{display:grid;grid-template-columns:46px minmax(0,1fr);gap:22px;padding:24px 0;border-bottom:1px solid var(--line)}
.ia-dimension-list article>span{display:grid;place-items:center;width:32px;height:32px;border:1px solid var(--green);color:var(--green-dark);font-size:9px;font-weight:800}
.ia-dimension-list h3{margin:0;font-size:18px}.ia-dimension-list p{margin:7px 0 0;color:var(--muted);font-size:13px;line-height:1.72}
.ia-evidence-table,.ia-matrix{margin-top:32px;overflow-x:auto;border:1px solid var(--line);background:#fff;scrollbar-width:thin}
.ia-evidence-table:focus-visible,.ia-matrix:focus-visible{outline:2px solid var(--green);outline-offset:3px}
.ia-evidence-table table,.ia-matrix table{width:100%;min-width:660px;border-collapse:collapse;text-align:left}
.ia-evidence-table th,.ia-matrix th{padding:14px 16px;border-right:1px solid var(--line);border-bottom:1px solid var(--ink);background:var(--mist);color:var(--ink);font-size:9px;font-weight:800;text-transform:uppercase}
.ia-evidence-table td,.ia-matrix td{padding:16px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--muted);font-size:12px;line-height:1.58;vertical-align:top}
.ia-evidence-table th:last-child,.ia-evidence-table td:last-child,.ia-matrix th:last-child,.ia-matrix td:last-child{border-right:0}.ia-evidence-table tbody tr:last-child td,.ia-matrix tbody tr:last-child td{border-bottom:0}.ia-evidence-table td:first-child,.ia-matrix td:first-child{color:var(--ink);font-weight:750}
.ia-claim-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:32px;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.ia-claim-grid article{min-height:260px;padding:25px 24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--mist)}
.ia-claim-grid article>span{color:var(--green-dark);font-size:8px;font-weight:800;text-transform:uppercase}.ia-claim-grid h3{margin:54px 0 0;font-size:19px;line-height:1.2}.ia-claim-grid p{margin:13px 0 0;color:var(--muted);font-size:12px;line-height:1.7}
.ia-stack-flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));margin-top:32px;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.ia-stack-flow>div{position:relative;min-height:200px;padding:22px 18px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.ia-stack-flow span{color:var(--green-dark);font-size:9px;font-weight:800}.ia-stack-flow strong{display:block;margin-top:44px;font-size:13px;line-height:1.35}.ia-stack-flow p{margin:9px 0 0;color:var(--muted);font-size:10px;line-height:1.55}
@media(max-width:900px){.ia-claim-grid{grid-template-columns:1fr}.ia-claim-grid article{min-height:0}.ia-claim-grid h3{margin-top:34px}.ia-stack-flow{grid-template-columns:repeat(2,minmax(0,1fr))}.ia-stack-flow>div:last-child{grid-column:1/-1;min-height:150px}}
@media(max-width:640px){.ia-compare-grid{grid-template-columns:1fr}.ia-compare-grid article{min-height:0;padding:24px 22px}.ia-compare-grid h3{margin-top:34px;font-size:20px}.ia-dimension-list article{grid-template-columns:38px minmax(0,1fr);gap:16px}.ia-stack-flow{grid-template-columns:1fr}.ia-stack-flow>div,.ia-stack-flow>div:last-child{grid-column:auto;min-height:0;padding:22px}.ia-stack-flow strong{margin-top:28px}.ia-evidence-table,.ia-matrix{margin-left:-4px;margin-right:-4px}}
.ia-mobile-toc a.is-active{color:var(--ink);font-weight:800;border-top-color:var(--green)}