/* DataStack V4.2 — a single editorial system across all three surfaces.
   Loaded last to reconcile the retained V4/V4.1 cascade without disturbing functionality. */
:root {
  --ds-ink: #171d27;
  --ds-navy: #171d27;
  --ds-blue: #0000ff;
  --ds-white: #ffffff;
  --ds-subtle: #f5f7fc;
  --ds-muted: #566174;
  --ds-line: #dce3ed;
  --ds-width: 1440px;
  --ds-gutter: clamp(18px, 3.9vw, 68px);
  --ds-header: 80px;
  --ds-radius: 12px;
  --ds-ease: cubic-bezier(.23,1,.32,1);
  --v4-blue: var(--ds-blue);
  --v4-ink: var(--ds-ink);
  --v4-muted: var(--ds-muted);
  --v4-line: var(--ds-line);
  --catalogue-ink: var(--ds-ink);
  --catalogue-muted: var(--ds-muted);
  --catalogue-line: var(--ds-line);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--ds-header) + 22px); }
body { background:var(--ds-white); color:var(--ds-ink); font-family:'Poppins',Arial,sans-serif; font-size:14px; }
body, main, section { max-width:100%; }
::selection { background:#dfe5ff; color:var(--ds-ink); }
:where(a,button,input):focus-visible { outline:3px solid #2340ff; outline-offset:4px; }
button, a { -webkit-tap-highlight-color:transparent; }
button:active, .video-hero-actions a:active, .v42-project-cta:active { transform:scale(.985); }
.shell, .catalogue-page .catalogue-layout {
  width:min(var(--ds-width), calc(100% - var(--ds-gutter) * 2));
  max-width:var(--ds-width); margin-inline:auto;
}
.site-header { position:sticky;top:0;z-index:60;background:rgba(255,255,255,.98);border-bottom:1px solid var(--ds-line);backdrop-filter:none; }
.header-inner { min-height:var(--ds-header);gap:32px; }
.brand { gap:12px;align-items:center; }
.brand img { width:34px;height:34px; }
.brand strong { font-size:23px;font-weight:700;letter-spacing:-.045em;line-height:1.1; }
.brand small { font-size:9px;letter-spacing:.18em;color:var(--ds-muted);margin-top:5px; }
.primary-nav { gap:clamp(22px,2.6vw,38px); }
.primary-nav a { padding:29px 0 26px;font-size:13px;letter-spacing:0;color:#454f60;border:0; }
.primary-nav a[aria-current] { color:var(--ds-blue);font-weight:600;border:0; }
.primary-nav a[aria-current]::after { content:"";height:2px;background:var(--ds-blue);position:absolute;bottom:16px;left:0;right:0; }
.mobile-nav { background:#fff;border-top:1px solid var(--ds-line); }
.mobile-nav:not([hidden]) { display:grid; }
.mobile-nav a { min-height:48px;display:flex;align-items:center; }
.v4-kicker, .v4-overline-dark, .catalogue-page .eyebrow, .catalogue-page .section-kicker,
.side-label, .v4-aside-heading { color:var(--ds-blue);font-size:10px;line-height:1.5;font-weight:600;letter-spacing:.14em; }
.v4-section-heading { align-items:end;gap:32px;margin:0 0 32px; }
.v4-section-heading h2 { font-size:clamp(35px,3.45vw,53px);line-height:1.14;letter-spacing:-.039em;font-weight:600;margin:12px 0 12px; }
.v4-section-heading p:not(.v4-kicker) { font-size:14px;line-height:1.75;max-width:680px;color:var(--ds-muted); }
.v4-inline-link { color:var(--ds-blue);font-size:13px;font-weight:600;display:inline-flex;min-height:44px;align-items:center;gap:9px;white-space:normal; }
.v4-inline-link:hover { text-decoration:underline;text-underline-offset:5px; }
/* HERO: preserve the unaltered 910x512 cinematic source, poster and source-loading logic. */
.video-hero-stage { min-height:clamp(575px,43vw,690px); }
.video-hero-content { padding-top:clamp(68px,6.6vw,104px);padding-bottom:31px; }
.video-hero-copy { max-width:680px; }
.video-hero-eyebrow { margin-bottom:30px;font-size:10px;letter-spacing:.105em; }
.v4-home .video-hero h1 { font-size:clamp(50px,5.1vw,84px);line-height:1.095;letter-spacing:-.045em;font-weight:600;max-width:790px; }
.v4-home .video-hero h1 span { font-weight:400;letter-spacing:-.045em; }
.video-hero-lead { margin-top:29px;max-width:475px;font-size:14px;line-height:1.85;color:#313b49; }
.video-hero-actions { margin-top:29px;gap:12px; }
.video-hero-actions a { min-height:50px;padding:12px 19px;border-radius:8px;font-size:12px;gap:30px;transition:background-color .18s var(--ds-ease),border-color .18s var(--ds-ease),transform .14s var(--ds-ease); }
.video-hero-primary { background:var(--ds-ink); }
.video-hero-primary:hover { background:#283d76; }
.video-hero-secondary { border-color:#c8d1df!important;background:rgba(255,255,255,.96); }
.video-hero-secondary:hover { color:var(--ds-blue);border-color:#8d9dfd!important; }
.video-hero-bottom { color:#37465a;font-size:10px;letter-spacing:.095em; }
.video-hero-visual { width:min(1050px,76vw);background-color:#ebf3ff; }
.hero-motion-control { min-height:44px;min-width:128px;border-radius:7px; }
/* Achievements are the only full-width navy segment before the editorial content. */
.video-hero-stats { background:var(--ds-navy); }
.video-stats-inner { grid-template-columns:minmax(180px,1.15fr) repeat(4,minmax(0,1fr));min-height:154px; }
.video-stats-intro { padding-right:20px; }
.video-stats-intro>strong { font-size:23px;letter-spacing:-.03em; }
.video-stat { border-color:#404757;padding-left:21px; }
.video-stat>strong { font-size:clamp(36px,3.15vw,46px);letter-spacing:-.045em; }
.video-stat>span { color:#d6dae4;font-size:11px; }
.video-stat>span small { color:#d6dae4;font-size:9px; }
/* FEATURE: title, 3-way selector and REAL iframe are full width; no tiny two-column viewport. */
.v4-feature-section { padding-top:clamp(80px,8vw,120px);padding-bottom:clamp(74px,7vw,100px); }
.v4-feature-workspace { display:flex;flex-direction:column;min-height:0;border:0;border-radius:0;box-shadow:none;overflow:visible; }
.v4-feature-left { display:flex;flex-direction:column;padding:0; }
.v4-feature-description { order:0;margin:0;padding:0; }
.v4-feature-description>span { color:var(--ds-blue);font-size:10px;letter-spacing:.12em; }
.feature-heading-line { display:flex;gap:28px;align-items:end;justify-content:space-between; }
.v4-feature-description h3 { font-size:clamp(30px,3vw,43px);line-height:1.13;letter-spacing:-.035em;font-weight:600;margin:9px 0 8px; }
.feature-heading-line>a { color:var(--ds-blue);font-weight:600;font-size:12px;display:inline-flex;min-height:44px;gap:14px;align-items:center;white-space:nowrap; }
.feature-heading-line>a:hover { text-decoration:underline;text-underline-offset:5px; }
.v4-feature-description p { max-width:800px;color:var(--ds-muted);font-size:13px;line-height:1.7;margin:4px 0 0; }
.v4-feature-list { order:1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin:27px 0 19px;border-top:1px solid var(--ds-line);border-bottom:1px solid var(--ds-line); }
.v4-feature-choice { grid-template-columns:25px minmax(0,1fr) 20px;gap:11px;min-height:84px;padding:15px 19px 15px 0;border-bottom:0;color:var(--ds-ink);position:relative; }
.v4-feature-choice:not(:last-child) { border-right:1px solid var(--ds-line);margin-right:19px; }
.v4-feature-choice::before { content:"";position:absolute;left:0;right:19px;top:-1px;height:2px;background:transparent; }
.v4-feature-choice.is-active::before { background:var(--ds-blue); }
.v4-feature-choice strong { font-size:13px;letter-spacing:-.01em; }
.v4-feature-choice small { font-size:10px;line-height:1.6; }
.v4-feature-choice>span { font-size:10px; }
.v4-feature-choice svg { width:16px; }
.v4-feature-choice:hover { background:transparent; }
.v4-feature-right { border:1px solid var(--ds-line);border-radius:var(--ds-radius);overflow:hidden;background:#fff; }
.v4-browser-top { min-height:46px;height:auto;padding:9px 20px;gap:20px;font-size:10px;letter-spacing:.06em; }
.v4-browser-top>span:last-child { font-size:11px;letter-spacing:0;font-weight:400;color:var(--ds-muted); }
.v4-feature-frame { flex:none;height:clamp(470px,47vw,720px);min-height:0;background:#fff; }
.v4-feature-frame iframe { border:0; }
.v4-frame-loading { background:#f9fbff;min-height:100%; }
.v4-frame-loading strong { color:var(--ds-ink);font-size:15px; }
.v4-frame-loading small { color:var(--ds-muted); }
.v4-feature-bottom { min-height:63px;padding:10px 20px; }
.v4-feature-bottom>span { color:var(--ds-muted);font-size:11px; }
.v4-feature-controls button { height:44px;width:44px;border-radius:7px; }
.v4-feature-controls output { min-width:45px;font-size:11px;color:var(--ds-ink);text-align:center; }
.v4-feature-deeplinks { display:flex;align-items:center;gap:15px 28px;flex-wrap:wrap;padding:21px 1px 0; }
.v4-feature-deeplinks a { min-height:44px;display:inline-flex;gap:8px;align-items:center;font-size:12px;color:var(--ds-blue);font-weight:600; }
.v4-feature-deeplinks a:hover { text-decoration:underline;text-underline-offset:5px; }
.feature-progress { margin-left:auto;color:var(--ds-muted);font-size:11px;font-variant-numeric:tabular-nums;letter-spacing:.07em; }
.v4-publications-note { border-top:1px solid var(--ds-line);margin-top:31px;padding-top:22px;gap:20px; }
.v4-publications-note>div { display:flex;align-items:baseline;gap:16px;flex-wrap:wrap; }
.v4-publications-note p { color:var(--ds-muted);font-size:12px;line-height:1.7;margin:0; }
.v4-publications-note a { font-size:12px;min-height:44px;display:inline-flex;align-items:center; }
/* WORK: consistent editorial portfolio, one purposeful emphasis instead of a giant black block. */
.v4-automation { background:#fff;padding:clamp(80px,7vw,108px) 0 clamp(78px,7vw,100px);border-top:1px solid var(--ds-line); }
.v42-projects { display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:stretch;margin-top:39px; }
.v42-project { display:flex;flex-direction:column;justify-content:space-between;gap:35px;padding:30px 28px 28px;min-height:365px;border:1px solid var(--ds-line);border-radius:var(--ds-radius);background:#fff;min-width:0; }
.v42-project-featured { background:var(--ds-navy);border-color:var(--ds-navy);color:#fff; }
.v42-project-top { display:flex;align-items:start;justify-content:space-between;gap:8px;color:var(--ds-muted);font-size:10px;line-height:1.55;font-weight:600;letter-spacing:.09em; }
.v42-project-featured .v42-project-top { color:#d9dfeb; }
.v42-live { display:inline-flex;align-items:center;gap:7px;white-space:nowrap; }
.v42-live i { width:7px;height:7px;display:inline-block;border-radius:50%;background:#fff; }
.v42-project-type { font-size:10px;line-height:1.5;letter-spacing:.12em;font-weight:600;color:var(--ds-blue); }
.v42-project-featured .v42-project-type { color:#d9dfeb; }
.v42-project h3 { margin:12px 0 17px;font-size:clamp(24px,2.2vw,31px);letter-spacing:-.035em;line-height:1.18;font-weight:600; }
.v42-project p { font-size:12px;line-height:1.85;color:var(--ds-muted);margin:0;max-width:360px; }
.v42-project-featured p { color:#e4e9f2; }
.v42-project-cta { display:inline-flex;align-items:center;justify-content:space-between;gap:18px;min-height:47px;width:100%;max-width:260px;padding:12px 15px;border-radius:7px;background:#fff;color:var(--ds-ink);font-size:11px;font-weight:600;transition:background-color .18s var(--ds-ease),transform .14s var(--ds-ease); }
.v42-project-cta:hover { background:#e9edff; }
.v42-process { display:grid;grid-template-columns:repeat(3,minmax(0,1fr));align-items:center;gap:5px;border-top:1px solid var(--ds-line);padding-top:20px; }
.v42-process span { position:relative;font-size:9px;font-weight:600;line-height:1.4;color:#43506a; }
.v42-process span:not(:last-child)::after { content:'→';float:right;color:var(--ds-blue);padding:0 4px; }
/* CONTACT and footer: no accidental sectional chasm. */
.v4-contact { border-top:1px solid var(--ds-line);padding:53px 0 58px; }
.v4-contact-inner { align-items:center; }
.v4-contact h2 { font-size:clamp(25px,2.6vw,35px);letter-spacing:-.04em;max-width:840px; }
.v4-contact .v4-inline-link { font-size:14px; }
.site-footer { background:var(--ds-navy);border-top:0; }
.footer-inner { gap:26px; }
/* REPORTS: calm, information-first library aligned with the Catalogue grid. */
.v4-library-top { padding:clamp(38px,4.1vw,63px) 0 28px;border-bottom:1px solid var(--ds-line); }
.v4-library-upper { display:grid;grid-template-columns:minmax(0,1.15fr) minmax(290px,440px);align-items:center;gap:40px; }
.v4-library-upper h1 { font-size:clamp(35px,3.4vw,50px);letter-spacing:-.038em;line-height:1.16;font-weight:600;margin:12px 0 13px; }
.v4-library-upper p:not(.v4-kicker) { max-width:650px;color:var(--ds-muted);font-size:13px;line-height:1.75; }
.v4-search-box { height:54px;border-radius:9px;border-color:var(--ds-line); }
.v4-search-box input { font-size:13px; }
.v4-search-box:focus-within { border-color:var(--ds-blue); }
.v42-filter-head { display:flex;justify-content:space-between;gap:16px;margin-top:33px;color:var(--ds-muted);font-size:10px;letter-spacing:.1em;font-weight:600; }
.v42-filter-head span:first-child { color:var(--ds-blue); }
.v4-keyword-bar { margin-top:12px;gap:7px; }
.v4-keyword-chip { min-height:44px;padding:9px 13px;border-radius:7px;font-size:11px; }
.v4-keyword-chip.active { background:var(--ds-ink);border-color:var(--ds-ink); }
.v4-library-grid { grid-template-columns:242px minmax(0,1fr);gap:39px;min-height:0; }
.v4-library-aside { padding:39px 22px 50px 0;border-right:1px solid var(--ds-line); }
.v4-aside-sticky { top:calc(var(--ds-header) + 22px); }
.v4-aside-heading { color:var(--ds-blue); }
.v4-report-list { gap:2px; }
.v4-report-choice { min-height:62px;padding:12px 10px;grid-template-columns:25px 1fr;gap:7px;border:1px solid transparent;border-radius:8px; }
.v4-report-choice strong { font-size:12px;letter-spacing:0;line-height:1.4; }
.v4-report-choice small { font-size:10px;line-height:1.5; }
.v4-report-choice.is-active { background:#f3f5ff;border-color:#dbe1fa;box-shadow:inset 2px 0 var(--ds-blue); }
.v4-report-choice:hover { background:#f7f8ff; }
.v4-library-detail { padding:43px 0 86px; }
.v4-report-header { padding-bottom:24px;margin-bottom:21px; }
.v4-report-title-row h2 { font-size:clamp(33px,3.2vw,47px);letter-spacing:-.04em;font-weight:600;margin:11px 0; }
.v4-report-title-row p { font-size:13px;line-height:1.8;color:var(--ds-muted); }
.v4-report-title-row>a { min-height:45px;font-size:11px;gap:15px;border-radius:7px; }
.v4-viewer-switch { gap:12px;margin-bottom:18px; }
.v4-viewer-tabs { border-radius:8px; }
.v4-viewer-tabs button { min-height:44px;font-size:12px;padding:9px 16px; }
.v4-viewer-tabs button.is-selected { background:var(--ds-navy); }
.v4-viewer-switch>p { color:var(--ds-muted); }
.v4-viewer { border-radius:var(--ds-radius); }
.v4-viewer-header { min-height:51px;padding:12px 20px; }
.v4-viewer-frame { height:clamp(540px,51vw,750px);min-height:0; }
.v4-viewer-footer { padding:14px 18px;line-height:1.8;color:var(--ds-muted); }
.v4-report-info { margin-top:37px;padding-top:27px;grid-template-columns:170px minmax(0,1fr);gap:25px; }
.v4-report-info dl>div { grid-template-columns:165px 1fr; }
.v4-empty { padding:60px 15px; }
.v4-empty button { min-height:46px; }
/* CATALOGUE: same 1440px shell / 242px rail / 39px gap / baseline. */
.catalogue-page .catalogue-layout { grid-template-columns:242px minmax(0,1fr);gap:39px;align-items:stretch;min-height:calc(100vh - var(--ds-header)); }
.catalogue-page .dataset-side { border-right:1px solid var(--ds-line); }
.catalogue-page .side-sticky { position:sticky;top:calc(var(--ds-header) + 22px);padding:43px 22px 45px 0; }
.catalogue-page .side-title { font-size:21px;letter-spacing:-.03em;margin:11px 0 21px; }
.catalogue-page .dataset-nav { gap:6px; }
.catalogue-page .dataset-choice { appearance:none;width:100%;min-height:77px;padding:13px 12px;border:1px solid transparent;border-radius:8px;background:#fff;color:var(--ds-ink);cursor:pointer;font-family:inherit;transition:background-color .16s ease,border-color .16s ease; }
.catalogue-page .dataset-choice:hover { background:#f7f8ff; }
.catalogue-page .dataset-choice.selected { background:#f3f5ff;border-color:#dbe1fa;box-shadow:inset 2px 0 var(--ds-blue); }
.catalogue-page .dataset-choice strong { font-size:12px;letter-spacing:0; }
.catalogue-page .dataset-choice small { font-size:10px;color:var(--ds-muted); }
.catalogue-page .dataset-code { font-size:10px;font-weight:600;letter-spacing:.09em;color:var(--ds-blue); }
.catalogue-page .side-divider { background:var(--ds-line); }
.catalogue-page .section-nav a { min-height:44px;display:flex;align-items:center;font-size:12px; }
.catalogue-page .dataset-main { padding:43px 0 86px;min-width:0; }
.catalogue-page .catalogue-heading .eyebrow { margin:0 0 19px; }
.catalogue-page .dataset-heading-line h1 { font-size:clamp(35px,3.4vw,50px);letter-spacing:-.038em;line-height:1.16;font-weight:600; }
.catalogue-page .dataset-heading-line p { max-width:690px;color:var(--ds-muted);font-size:13px;line-height:1.75;margin-top:15px; }
.catalogue-page .dataset-section { border-top:1px solid var(--ds-line);padding:37px 0 45px; }
.catalogue-page .dataset-section h2 { font-size:clamp(24px,2.5vw,30px);letter-spacing:-.034em;font-weight:600;line-height:1.28;margin:9px 0 14px; }
.catalogue-page .dataset-section .body-para { max-width:810px;color:var(--ds-muted);font-size:13px;line-height:1.8; }
.v42-dataset-current { display:flex;align-items:center;gap:12px;margin:15px 0 21px;flex-wrap:wrap; }
.v42-dataset-current strong { font-size:14px;font-weight:600;color:var(--ds-ink); }
.v42-dataset-current>span { font-size:10px;line-height:1.5;border:1px solid var(--ds-line);border-radius:6px;padding:5px 9px;color:#4e5969; }
.catalogue-page .public-access-actions .button { min-height:45px;border-radius:7px; }
.catalogue-page .public-access-actions .button.primary { background:var(--ds-navy);border-color:var(--ds-navy); }
.catalogue-page .public-access-actions .button.primary:hover { background:var(--ds-blue);border-color:var(--ds-blue); }
.catalogue-page .public-access-actions .button.ghost { color:var(--ds-blue); }
/* One spacing and touch system across smaller screens. */
@media (max-width:1120px) {
 .v4-library-grid, .catalogue-page .catalogue-layout { grid-template-columns:210px minmax(0,1fr);gap:24px; }
 .v4-library-aside, .catalogue-page .side-sticky { padding-right:14px; }
 .v4-library-upper { grid-template-columns:minmax(0,1fr) minmax(240px,365px);gap:24px; }
 .video-stats-inner { grid-template-columns:minmax(138px,.85fr) repeat(4,minmax(0,1fr)); }
 .video-stat { padding-left:16px; }
 .video-stats-intro>strong { font-size:20px; }
 .v42-projects { gap:12px; }
 .v42-project { padding:23px 20px; }
 .v42-project-top { flex-wrap:wrap; }
}
@media (max-width:790px) {
 .v4-library-upper { grid-template-columns:1fr;gap:20px; }
 .v4-search-box { max-width:none; }
 .v4-library-grid { display:block;min-height:0; }
 .v4-library-aside { border-right:0;border-bottom:1px solid var(--ds-line);padding:19px 0; }
 .v4-aside-sticky { position:static; }
 .v4-report-list { display:flex;gap:8px;overflow:auto;padding-bottom:5px;scrollbar-width:thin; }
 .v4-report-choice { flex:0 0 176px;min-height:72px;border-color:var(--ds-line); }
 .v4-aside-bottom { display:none; }
 .v4-library-detail { padding:35px 0 70px; }
 .v4-feature-frame { height:clamp(390px,65vw,550px); }
 .v42-projects { grid-template-columns:1fr 1fr; }
 .v42-project { min-height:300px; }
 .v42-project-featured { grid-column:1/-1;min-height:290px; }
 .v42-project-featured p { max-width:600px; }
 .catalogue-page .catalogue-layout { display:block; }
 .catalogue-page .dataset-side { border-right:0;border-bottom:1px solid var(--ds-line); }
 .catalogue-page .side-sticky { position:static;padding:24px 0 18px; }
 .catalogue-page .dataset-nav { grid-template-columns:repeat(3,minmax(0,1fr)); }
 .catalogue-page .dataset-choice { min-height:82px; }
 .catalogue-page .section-nav { display:flex;gap:12px; }
 .catalogue-page .dataset-main { padding:34px 0 65px; }
 .video-stats-inner { grid-template-columns:repeat(4,minmax(0,1fr)); }
 .video-stats-intro { grid-column:1/-1; }
 .video-stat:first-of-type { border-left:0; }
}
@media (max-width:640px) {
 :root { --ds-header:70px;--ds-gutter:17px; }
 .header-inner { min-height:var(--ds-header); }
 .primary-nav { display:none; }
 .mobile-menu { display:flex;min-width:44px;min-height:44px;align-items:center;justify-content:center; }
 .brand strong { font-size:22px; }
 .brand small { font-size:8px; }
 .video-hero-stage { display:flex;min-height:0;overflow:visible; }
 .video-hero-content { width:calc(100% - var(--ds-gutter)*2);padding:35px 0 0; }
 .video-hero-eyebrow { font-size:9px;margin-bottom:22px;letter-spacing:.07em; }
 .v4-home .video-hero h1 { font-size:clamp(37px,9.15vw,49px);line-height:1.1;letter-spacing:-.043em; }
 .v4-home .video-hero h1 span { letter-spacing:-.043em; }
 .video-hero-lead { max-width:450px;font-size:12px;line-height:1.8;margin-top:22px; }
 .video-hero-actions { display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:22px; }
 .video-hero-actions a { min-height:48px;gap:8px;padding:10px 11px;font-size:10px; }
 .video-hero-actions svg { width:14px; }
 .video-hero-visual { width:calc(100% - var(--ds-gutter)*2);margin-top:28px;aspect-ratio:16/9; }
 .hero-motion-control { min-height:44px;min-width:115px; }
 .video-stats-intro { padding:21px 0 13px; }
 .video-stats-inner { grid-template-columns:repeat(2,minmax(0,1fr)); }
 .video-stat { padding:18px 12px 18px 16px;min-height:107px; }
 .video-stat:nth-of-type(2),.video-stat:nth-of-type(4) { border-left:0;padding-left:0; }
 .video-stat>strong { font-size:39px; }
 .video-stat>span { font-size:10px; }
 .v4-feature-section, .v4-automation { padding-top:71px;padding-bottom:73px; }
 .v4-section-heading { align-items:flex-start;flex-direction:column;gap:8px;margin-bottom:25px; }
 .v4-section-heading h2 { font-size:clamp(34px,8.7vw,42px); }
 .v4-section-heading p:not(.v4-kicker) { font-size:12px;line-height:1.75; }
 .v4-feature-description h3 { font-size:31px; }
 .feature-heading-line { align-items:flex-start;flex-direction:column;gap:1px; }
 .feature-heading-line>a { min-height:44px;font-size:11px; }
 .v4-feature-description p { font-size:12px; }
 .v4-feature-list { grid-template-columns:1fr;gap:0;margin:19px 0 14px; }
 .v4-feature-choice { display:grid;grid-template-columns:23px 1fr 18px;min-height:62px;gap:9px;padding:11px 2px;border-bottom:1px solid var(--ds-line); }
 .v4-feature-choice:not(:last-child) { margin:0;border-right:0; }
 .v4-feature-choice::before { left:0;right:auto;top:0;bottom:0;width:2px;height:auto; }
 .v4-feature-choice small { font-size:10px; }
 .v4-feature-frame { height:clamp(310px,91vw,460px);min-height:0; }
 .v4-browser-top { min-height:43px;padding:9px 12px;font-size:9px; }
 .v4-browser-top>span:last-child { display:none; }
 .v4-feature-bottom { padding:8px 12px; }
 .v4-feature-bottom>span { font-size:9px;max-width:150px; }
 .v4-feature-deeplinks { gap:0 18px;padding-top:14px; }
 .v4-feature-deeplinks a { font-size:11px; }
 .feature-progress { margin-left:0;width:100%; }
 .v4-publications-note { align-items:flex-start;flex-direction:column;gap:10px; }
 .v42-projects { grid-template-columns:1fr;gap:11px;margin-top:26px; }
 .v42-project-featured { grid-column:auto; }
 .v42-project { min-height:275px;padding:23px 21px;gap:26px; }
 .v42-project h3 { font-size:29px; }
 .v42-project p { font-size:12px; }
 .v4-contact { padding:41px 0; }
 .v4-contact h2 { font-size:27px; }
 .v4-library-top { padding:31px 0 17px; }
 .v4-library-upper h1 { font-size:36px; }
 .v4-library-upper p:not(.v4-kicker) { font-size:12px; }
 .v42-filter-head { margin-top:25px; }
 .v42-filter-head span:last-child { display:none; }
 .v4-keyword-bar { margin-top:12px;flex-wrap:nowrap;overflow-x:auto;padding:0 0 7px; }
 .v4-keyword-chip { min-height:44px;flex:none; }
 .v4-library-aside { padding:21px 0 15px; }
 .v4-report-choice { flex:0 0 176px;display:grid;grid-template-columns:22px 1fr;padding:10px;min-height:70px; }
 .v4-report-choice strong { font-size:11px; }
 .v4-report-choice small { font-size:9px; }
 .v4-library-detail { padding:31px 0 60px; }
 .v4-report-title-row { align-items:stretch;gap:11px; }
 .v4-report-title-row h2 { font-size:34px; }
 .v4-report-title-row p { font-size:12px; }
 .v4-report-title-row>a { align-self:flex-start;min-height:44px; }
 .v4-viewer-switch { margin-bottom:14px; }
 .v4-viewer-tabs { width:100%; }
 .v4-viewer-tabs button { min-height:44px;font-size:10px;padding:9px 8px; }
 .v4-viewer-frame { height:410px;min-height:0; }
 .v4-viewer-header { min-height:48px;padding:12px;font-size:9px; }
 .v4-viewer-header a { font-size:10px; }
 .v4-viewer-footer { flex-direction:column;align-items:flex-start; }
 .v4-report-info { grid-template-columns:1fr;gap:10px; }
 .v4-report-info dl>div { grid-template-columns:114px minmax(0,1fr);gap:11px; }
 .catalogue-page .side-sticky { padding:22px 0; }
 .catalogue-page .dataset-nav { grid-template-columns:1fr;gap:3px; }
 .catalogue-page .dataset-choice { min-height:62px; }
 .catalogue-page .section-nav { display:none; }
 .catalogue-page .dataset-main { padding:31px 0 60px; }
 .catalogue-page .dataset-heading-line h1 { font-size:36px; }
 .catalogue-page .dataset-heading-line p { font-size:12px; }
 .catalogue-page .dataset-section { padding:30px 0 40px; }
 .catalogue-page .dataset-section h2 { font-size:25px; }
 .catalogue-page .dataset-section .body-para { font-size:12px; }
}
@media (prefers-reduced-motion: reduce) {
 html { scroll-behavior:auto; }
 .v4-loading-ring { animation:none; }
 :where(a,button) { transition-duration:0s!important; }
}
/* QA correction: an older mobile stylesheet switches Catalogue navigation to a
   160px-wide horizontal flex strip. Override display as well as grid columns. */
@media (max-width:640px) {
  .catalogue-page .dataset-nav { display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;overflow:visible; }
  .catalogue-page .dataset-choice { min-width:0;width:100%;min-height:91px;gap:6px;padding:10px 8px;align-content:start; }
  .catalogue-page .dataset-choice strong { font-size:11px;line-height:1.35;overflow-wrap:anywhere; }
  .catalogue-page .dataset-code { font-size:9px;letter-spacing:.035em; }
  .catalogue-page .dataset-choice small { font-size:9px;line-height:1.45; }
  .catalogue-page .side-divider,
  .catalogue-page .side-divider + .side-label { display:none; }
}