:root {
  --ink: #111111;
  --accent: #b3251e;
  --paper: #ffffff;
  --body: #555555;
  --line: #dedede;
  --wash: #f6f6f4;
  --mono: 'IBM Plex Mono', Consolas, 'Liberation Mono', monospace;
  --sans: 'Libre Franklin', Arial, Helvetica, sans-serif;
  color-scheme: light;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.6;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: inherit; text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
button, input { font: inherit; }
button { cursor: pointer; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { color: var(--ink); }
h1 { font-size: clamp(2.2rem, 4.8vw, 3.65rem); font-weight: 800; line-height: 1.12; letter-spacing: -.055em; text-wrap: balance; }
h2 { font-size: 1.22rem; line-height: 1.3; font-weight: 800; letter-spacing: -.035em; }
h3 { font-size: .875rem; font-weight: 700; line-height: 1.5; }
p { color: var(--body); }
form { margin: 0; }
.mono { font-family: var(--mono); }
.label { font-family: var(--mono); font-size: .7rem; line-height: 1.6; letter-spacing: .08em; text-transform: uppercase; color: var(--body); }
.eyebrow { color: var(--accent); font-weight: 500; letter-spacing: .12em; }
.shell { width: min(1160px, 100%); margin: 0 auto; }
.preview-banner { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 6px 15px; padding: 10px 24px; background: var(--wash); border-bottom: 1px solid var(--line); font-size: .72rem; color: var(--body); }
.preview-banner strong { color: var(--ink); font-weight: 600; }
.preview-dot { width: 6px; height: 6px; background: var(--accent); }
.skip-link { position: absolute; top: -100px; left: 16px; background: var(--ink); color: white; padding: 12px 20px; z-index: 10; }
.skip-link:focus { top: 12px; }
.masthead { display: flex; gap: 24px; justify-content: space-between; align-items: center; padding: 30px 42px 26px; border-bottom: 4px solid var(--ink); }
.brand { display: flex; gap: 13px; align-items: center; text-decoration: none; }
.brand-mark { width: 39px; height: 42px; display: grid; place-items: center; background: var(--accent); color: white; flex: 0 0 auto; }
.brand-mark svg { width: 28px; height: 28px; }
.wordmark { display: block; font-weight: 800; font-size: 1.3rem; letter-spacing: -.04em; line-height: 1.2; }
.brand-sub { display: block; margin-top: 5px; font-size: .63rem; letter-spacing: .1em; }
.header-links { display: flex; gap: 24px; flex-shrink: 0; }
.header-links a { font-size: .77rem; font-weight: 600; text-decoration: none; padding: 8px 0; }
.header-links a:hover { text-decoration: underline; }
main { padding: 0 42px; }
.footer { border-top: 1px solid var(--line); margin-top: 36px; padding: 22px 42px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: .68rem; color: var(--body); }
.footer strong { color: var(--ink); }
.home-hero { position: relative; padding: 65px 225px 48px 0; }
.home-hero h1 { margin: 16px 0 20px; font-size: clamp(2.4rem, 5.1vw, 4rem); }
.intro { font-size: 1rem; line-height: 1.7; max-width: 650px; }
.home-stat { position: absolute; right: 0; top: 86px; padding-left: 28px; border-left: 1px solid var(--line); }
.stat-number { display: block; font-weight: 800; line-height: 1; font-size: 5rem; letter-spacing: -.07em; margin-bottom: 13px; }
.demo-panel { display: flex; justify-content: space-between; align-items: center; gap: 36px; padding: 25px 28px; background: var(--wash); border-top: 3px solid var(--ink); }
.demo-panel h2 { margin-top: 7px; }
.demo-panel p:not(.eyebrow) { margin-top: 10px; font-size: .82rem; max-width: 630px; }
.demo-panel form { flex-shrink: 0; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; text-align: center; min-height: 42px; padding: 10px 14px; border: 1px solid var(--ink); background: var(--paper); color: var(--ink); font-size: .72rem; line-height: 1.4; font-weight: 600; text-decoration: none; }
.button:hover { background: var(--wash); text-decoration: none; }
.button-primary { background: var(--ink); color: white; }
.button-primary:hover { background: #333; }
.button-quiet { border-color: transparent; color: var(--body); }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.home-list, .withdrawn-list { margin-top: 38px; }
.section-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; margin-bottom: 18px; }
.section-heading > .label { flex-shrink: 0; }
.work-card { border-top: 1px solid var(--line); padding: 25px 0 28px; }
.work-card-header { display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.status, .sample-label { display: inline-flex; align-items: center; gap: 8px; border: 1px solid #c7c7c7; padding: 4px 8px; color: var(--body); font-family: var(--mono); font-size: .65rem; line-height: 1.5; }
.work-card h2 { font-size: 1.65rem; max-width: 780px; margin-top: 12px; letter-spacing: -.04em; }
.work-card h2 a { text-decoration: none; }
.work-card h2 a:hover { text-decoration: underline; }
.source-url { font-size: .79rem; margin-top: 15px; overflow-wrap: anywhere; }
.source-url a { color: var(--body); text-decoration: none; }
.source-url a:hover { text-decoration: underline; }
.external { display: inline-block; margin-left: 5px; font-family: var(--sans); font-size: .9em; }
.work-meta { font-family: var(--mono); font-size: .66rem; margin-top: 10px; }
.empty-state { padding: 38px 28px; background: var(--wash); border: 1px solid var(--line); }
.empty-state h3 { font-size: 1rem; }
.empty-state p { font-size: .85rem; margin-top: 8px; }
.withdrawn-card { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 20px 0; border-top: 1px solid var(--line); }
.withdrawn-card p { font-size: .75rem; margin-top: 6px; overflow-wrap: anywhere; }
.withdrawn-card .actions { margin-top: 0; flex-shrink: 0; }
.footnote { color: var(--body); font-size: .73rem; line-height: 1.75; max-width: 850px; margin: 28px 0 0; }
.idbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-top: 23px; }
.back-link { font-size: .73rem; color: var(--body); text-decoration: none; }
.back-link:hover { text-decoration: underline; }
.record-id { color: var(--body); font-size: .62rem; overflow-wrap: anywhere; text-align: right; }
.sample-label { margin-top: 24px; font-size: .64rem; letter-spacing: .04em; text-transform: uppercase; }
.sample-label span { color: var(--accent); }
.history-notice { margin-top: 24px; background: var(--wash); border-left: 3px solid var(--accent); padding: 13px 16px; display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--body); font-size: .76rem; }
.certificate-hero { display: grid; grid-template-columns: minmax(0, 1fr) 182px; gap: 36px; padding: 37px 0 33px; }
.certificate-hero h1 { margin: 13px 0 21px; }
.certificate-hero .source-url { margin-top: 0; }
.version { border-left: 1px solid var(--line); padding-left: 27px; margin-top: 3px; }
.version-number { font-size: 5.1rem; font-weight: 800; letter-spacing: -.065em; line-height: 1.05; margin: 13px 0 11px; }
.version-state { color: var(--ink); font-size: .73rem; font-weight: 600; }
.version-state::before { content: ''; display: inline-block; width: 5px; height: 5px; margin: 0 7px 2px 0; border-radius: 50%; background: var(--ink); }
.version-date { font-family: var(--mono); font-size: .65rem; line-height: 1.8; color: var(--body); margin-top: 8px; }
.byline { display: grid; grid-template-columns: 1fr 1fr 1.15fr; gap: 24px; padding: 23px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.byline > div + div { border-left: 1px solid var(--line); padding-left: 25px; }
.meta-value { font-size: .88rem; font-weight: 600; margin-top: 7px; overflow-wrap: anywhere; }
.meta-value a { text-decoration: none; }
.meta-value a:hover { text-decoration: underline; }
.meta-sub { font-size: .67rem; color: var(--body); margin-top: 5px; }
.section-nav { display: flex; justify-content: space-between; align-items: center; gap: 20px; border-bottom: 1px solid var(--line); margin-top: 15px; }
.section-nav > div { display: flex; gap: 30px; flex-wrap: wrap; }
.section-nav a { padding: 15px 0 13px; font-size: .76rem; font-weight: 600; text-decoration: none; border-bottom: 3px solid transparent; margin-bottom: -1px; }
.section-nav a:first-child { border-color: var(--accent); }
.section-nav a:hover { border-color: var(--ink); }
.section-nav .mono { color: var(--body); margin-left: 5px; font-size: .65rem; }
.certificate-section { padding-top: 34px; scroll-margin-top: 20px; }
.overview-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr); gap: 36px; }
.check-row { display: grid; grid-template-columns: 19px minmax(0, 1fr) auto; gap: 11px; padding: 15px 0; border-top: 1px solid var(--line); align-items: start; }
.check-icon { width: 17px; height: 17px; border: 1px solid #a8a8a8; border-radius: 50%; display: grid; place-items: center; color: var(--body); font-size: .65rem; line-height: 1; margin-top: 2px; }
.check-icon.is-verified { border-color: var(--ink); color: var(--ink); }
.check-row h3 { font-size: .77rem; }
.check-row p { font-size: .72rem; margin-top: 4px; }
.check-status { border: 1px solid var(--line); padding: 3px 5px; font-family: var(--mono); text-transform: uppercase; font-size: .59rem; line-height: 1.5; text-align: center; margin-top: 1px; }
.record-details { background: var(--wash); border-top: 3px solid var(--ink); padding: 23px 25px; align-self: start; }
.record-details dl { margin: 19px 0 0; }
.record-details dt, .withdrawn-details dt { font-family: var(--mono); text-transform: uppercase; letter-spacing: .04em; font-size: .65rem; color: var(--body); margin-top: 18px; }
.record-details dd, .withdrawn-details dd { margin: 5px 0 0; font-size: .79rem; overflow-wrap: anywhere; }
.record-details .mono { font-size: .68rem; }
.record-details > p { margin-top: 19px; padding-top: 15px; border-top: 1px solid var(--line); font-size: .69rem; }
.section-intro { font-size: .79rem; margin-bottom: 20px; max-width: 760px; }
.history-list { margin: 0; padding: 0; list-style: none; }
.history-row { border-top: 1px solid var(--line); display: grid; grid-template-columns: 42px minmax(0, 1fr) auto; align-items: center; gap: 18px; padding: 20px 0; }
.history-number { color: var(--body); font-weight: 800; font-size: 1.8rem; letter-spacing: -.055em; }
.history-row.is-selected .history-number { color: var(--accent); }
.history-row h3 { font-size: .8rem; }
.history-row p { font-family: var(--mono); font-size: .67rem; margin-top: 5px; }
.current-label { display: inline-block; padding: 2px 5px; margin-left: 8px; border: 1px solid var(--line); text-transform: uppercase; font-family: var(--mono); font-size: .59rem; font-weight: 400; vertical-align: middle; }
.history-id { display: block; margin-top: 4px; color: var(--body); font-size: .61rem; overflow-wrap: anywhere; }
.digest-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; }
.digest { display: block; font-family: var(--mono); font-size: .7rem; line-height: 1.9; background: var(--wash); padding: 15px 17px; margin-top: 9px; overflow-wrap: anywhere; }
details { margin-top: 25px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
summary { padding: 15px 0; cursor: pointer; font-size: .78rem; font-weight: 600; }
pre { padding: 20px; background: var(--wash); font-family: var(--mono); font-size: .72rem; line-height: 1.8; white-space: pre-wrap; overflow-wrap: anywhere; margin: 0 0 20px; }
.withdrawn-hero, .error-page { padding: 64px 0 42px; }
.withdrawn-hero h1, .error-page h1 { margin: 15px 0 24px; max-width: 780px; }
.withdrawn-hero > .button, .error-page > .button { margin-top: 26px; }
.withdrawn-details { background: var(--wash); padding: 10px 25px 25px; margin: 30px 0; max-width: 650px; }
.methodology { padding: 43px 0 15px; max-width: 800px; }
.methodology h1 { margin: 15px 0 24px; }
.methodology section { margin-top: 35px; border-top: 1px solid var(--line); padding-top: 25px; }
.methodology section p { font-size: .875rem; margin-top: 14px; }
.methodology > .button { margin-top: 30px; }
.scope-list { margin: 20px 0 0; }
.scope-list dt { font-weight: 700; font-size: .875rem; margin-top: 20px; }
.scope-list dd { margin: 5px 0 0; color: var(--body); font-size: .84rem; }
@media (min-width: 1160px) { .shell { border-inline: 1px solid #eeeeec; min-height: calc(100vh - 41px); } }
@media (max-width: 880px) {
  main { padding-inline: 28px; }
  .masthead, .footer { padding-inline: 28px; }
  .overview-grid { gap: 25px; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); }
  .check-row { grid-template-columns: 19px minmax(0, 1fr); }
  .check-status { grid-column: 2; justify-self: start; }
  .demo-panel { gap: 22px; padding: 22px; }
  .demo-panel form { max-width: 155px; }
  .record-details { padding: 20px; }
  .header-links { gap: 18px; }
}
@media (max-width: 650px) {
  main { padding-inline: 20px; }
  .masthead { padding: 22px 20px; align-items: flex-start; }
  .wordmark { font-size: 1.1rem; }
  .brand { gap: 10px; }
  .brand-mark { width: 32px; height: 37px; }
  .brand-sub { font-size: .53rem; letter-spacing: .035em; }
  .header-links { flex-direction: column; gap: 0; align-items: flex-end; }
  .header-links a { padding: 2px 0; font-size: .67rem; }
  .preview-banner { font-size: .64rem; padding-inline: 12px; column-gap: 8px; }
  .preview-banner > span:last-child { flex-basis: 100%; text-align: center; }
  .home-hero { padding: 39px 0 30px; }
  .desktop-break { display: none; }
  .home-stat { position: static; display: flex; gap: 17px; align-items: center; border-left: 0; padding: 19px 0 0; margin-top: 22px; border-top: 1px solid var(--line); }
  .stat-number { margin: 0; font-size: 3.3rem; }
  .home-stat br { display: none; }
  .demo-panel { display: block; }
  .demo-panel form { max-width: none; margin-top: 20px; }
  .home-list { margin-top: 31px; }
  .work-card h2 { font-size: 1.4rem; }
  .work-card-header { align-items: flex-start; }
  .work-card-header .label { font-size: .63rem; }
  .status { white-space: nowrap; }
  .withdrawn-card { align-items: flex-start; flex-direction: column; gap: 16px; }
  .idbar { align-items: flex-start; flex-direction: column; gap: 10px; }
  .record-id { text-align: left; }
  .sample-label { font-size: .58rem; }
  .certificate-hero { grid-template-columns: 1fr; gap: 24px; padding-top: 27px; }
  .certificate-hero h1 { font-size: clamp(2rem, 8vw, 2.8rem); }
  .version { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 3px 18px; border-left: 0; border-top: 1px solid var(--line); padding: 18px 0 0; margin: 0; }
  .version-number { grid-column: 2; grid-row: 1 / 4; font-size: 3.9rem; margin: 0; }
  .version .label, .version-state, .version-date { grid-column: 1; }
  .version-date { margin: 0; }
  .byline { grid-template-columns: 1fr 1fr; gap: 20px; }
  .byline > div + div { padding-left: 19px; }
  .byline > div:last-child { grid-column: 1 / -1; border-left: 0; border-top: 1px solid var(--line); padding: 17px 0 0; }
  .section-nav > .label { display: none; }
  .section-nav > div { gap: 20px; }
  .section-nav a { font-size: .7rem; }
  .section-nav .mono { font-size: .61rem; margin-left: 2px; }
  .overview-grid, .digest-grid { grid-template-columns: 1fr; gap: 25px; }
  .check-row { grid-template-columns: 19px minmax(0, 1fr) auto; }
  .check-status { grid-column: auto; max-width: 92px; }
  .history-row { grid-template-columns: 31px minmax(0, 1fr); gap: 11px 15px; }
  .history-row > .button { grid-column: 2; justify-self: start; }
  .history-number { font-size: 1.6rem; }
  .history-row h3 { font-size: .76rem; }
  .section-heading { gap: 12px; }
  .section-heading h2 { font-size: 1.14rem; }
  .section-heading > .label { font-size: .61rem; }
  .footer { padding-inline: 20px; }
  .withdrawn-hero, .error-page { padding-top: 40px; }
}
@media (max-width: 380px) {
  .wordmark { font-size: .99rem; }
  .brand-mark { width: 27px; }
  .brand-sub { max-width: 160px; font-size: .51rem; }
  .section-nav > div { gap: 14px; }
  .check-row { grid-template-columns: 17px minmax(0, 1fr); gap: 8px; }
  .check-status { grid-column: 2; }
}
@media (pointer: coarse) { .button, .header-links a, .back-link, .section-nav a { min-height: 44px; } .header-links a { display: flex; align-items: center; } }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
@media print {
  @page { margin: 16mm; }
  :root { font-size: 12px; }
  .shell { width: 100%; border: 0; }
  main { padding: 0; }
  .masthead { padding: 16px 0; }
  .preview-banner { background: none; border: 0; }
  .header-links, .skip-link, .section-nav, .actions, .demo-panel, .back-link, .history-row > .button { display: none; }
  h1 { font-size: 32px; }
  .certificate-hero { grid-template-columns: minmax(0, 1fr) 150px; }
  .overview-grid { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); }
  .record-details, .check-row, .history-row, .byline, .digest-grid { break-inside: avoid; }
  .record-details { background: none; border: 1px solid var(--line); border-top: 3px solid var(--ink); }
  .footer { padding: 15px 0; }
  .certificate-section { padding-top: 24px; }
  details { display: none; }
  .history-notice a { display: none; }
}

/* Verified evidence badges: shared dimensions and keyboard/touch disclosures. */
.verification-badges{display:flex;flex-wrap:wrap;align-items:flex-start;gap:16px;margin:24px 0 28px;max-width:100%}
.verification-badge{position:relative;flex:0 1 285px;width:285px;max-width:100%;margin:0;color:#111;font-size:14px}
.verification-badge summary{box-sizing:border-box;display:flex;align-items:center;gap:12px;min-height:78px;padding:13px 15px;background:#111;color:#fff;border:1px solid #111;box-shadow:0 3px 0 #b3251e;cursor:pointer;list-style:none}
.verification-badge summary::-webkit-details-marker{display:none}
.verification-badge summary:focus-visible{outline:3px solid #b3251e;outline-offset:5px}
.verification-badge-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;flex:0 0 40px;border:1px solid #aaa;border-radius:50%;font-size:25px}
.verification-badge-label{min-width:0}.verification-badge-label>span{display:block;font-family:var(--mono,monospace);font-size:11px;letter-spacing:.04em;text-transform:uppercase;color:#ccc}
.verification-badge-label strong{display:block;font-size:17px;line-height:1.4;font-weight:700;white-space:nowrap}
.verification-badge-info{margin-left:auto;font-size:16px}
.verification-badge-description{position:absolute;z-index:20;top:100%;left:0;width:min(375px,calc(100vw - 48px));box-sizing:border-box;padding:18px;border:1px solid #111;border-top:3px solid #b3251e;background:#fff;color:#555;font-size:14px;line-height:1.65;box-shadow:0 8px 20px #0002}
.verification-badge-description p{margin:0 0 12px}.verification-badge-description a{color:#111;text-decoration:underline}
@media(max-width:680px){.verification-badge-description{position:relative;width:100%}}
@media print{.verification-badge{display:block;break-inside:avoid}.verification-badge summary{background:#fff;color:#111;box-shadow:none}.verification-badge-label>span{color:#555}.verification-badge-description,.verification-badge-info{display:none}}