/* Shared editorial shell. Scoped to internal pages; editor and homepage unaffected. */
.article-modern {
  --article-bg: #f5f7fc;
  --article-panel: #ffffff;
  --article-soft: #f4f7fd;
  --article-text: #3d4f70;
  --article-heading: #101f43;
  --article-muted: #637394;
  --article-line: #e0e6f1;
  --article-accent: #1458ed;
  --article-accent-soft: #edf3ff;
  background: radial-gradient(ellipse at 10% 0, #e7efff80, transparent 38rem), var(--article-bg);
  color: var(--article-text);
}
html[data-theme="dark"] .article-modern {
  --article-bg: #121e2e;
  --article-panel: #19283b;
  --article-soft: #1d2f46;
  --article-text: #c4d0e3;
  --article-heading: #e9f0ff;
  --article-muted: #a0b2ce;
  --article-line: #344760;
  --article-accent: #94baff;
  --article-accent-soft: #263e5d;
  background: radial-gradient(ellipse at 10% 0, #28426865, transparent 38rem), var(--article-bg);
}
.article-modern .article-skip-link {
  position: fixed; top: 10px; left: 16px; z-index: 500;
  padding: 12px 18px; border-radius: 10px; color: #fff; background: #1458ed;
  transform: translateY(-160%);
}
.article-modern .article-skip-link:focus { transform: translateY(0); }
.home-start.article-modern .reference-header { height: auto; min-height: 72px; position: relative; z-index: 20; }
.home-start.article-modern .reference-header .site-nav { display: grid; grid-template-columns: minmax(240px,1fr) auto minmax(44px,1fr); min-height: 70px; }
.home-start.article-modern .reference-header .site-nav__brand { color: var(--article-heading); }
.home-start.article-modern .reference-header .site-nav__actions { position: static; top: auto; right: auto; justify-self: end; }
.home-start.article-modern .reference-header .header-cta[hidden] { display: none; }
.home-start.article-modern .reference-header .theme-toggle { color: var(--article-heading); }
.article-modern .barcode-logo { color: #fff; background: linear-gradient(145deg,#1963f2,#173aad); }
.article-modern .seo-header-menu [aria-current="page"],
.article-modern .seo-header-menu .article-menu-current { color: var(--article-accent); background: var(--article-accent-soft); }
.article-modern .seo-header-menu .seo-menu-dropdown a { white-space: normal; }
.article-modern .seo-header-menu details { margin: 0; padding: 0; border: 0; border-radius: 0; background: transparent; }
.article-modern .content-shell { width: min(1336px,calc(100% - 64px)); padding: 6px 0 56px; }
.article-modern .breadcrumbs { margin: 0 0 20px 4px; color: var(--article-muted); font-size: 13px; line-height: 1.6; overflow-wrap: anywhere; }
.article-modern .breadcrumbs a { color: var(--article-muted); font-weight: 500; }
.article-modern .breadcrumbs a:hover { color: var(--article-accent); }
.article-modern .article-hero {
  position: relative; isolation: isolate; margin: 0 0 28px; padding: clamp(30px,4.3vw,60px);
  border: 1px solid var(--article-line); border-radius: 28px;
  background: radial-gradient(ellipse at 100% 0, #d9e6ff80, transparent 57%), var(--article-panel);
  box-shadow: 0 12px 34px #193b7a04;
}
.article-modern .article-hero::before {
  content: ""; position: absolute; z-index: -1; pointer-events: none;
  width: min(32%,300px); height: 120px; right: 25px; top: 25px;
  background-image: radial-gradient(#6691e755 1px,transparent 1px);
  background-size: 14px 14px; mask-image: linear-gradient(90deg,transparent,#000);
}
.article-modern .article-hero .eyebrow {
  display: inline-flex; margin: 0 0 19px; padding: 7px 11px; border-radius: 7px;
  background: var(--article-accent-soft); color: var(--article-accent);
  font-size: 11px; line-height: 1.4; font-weight: 750; letter-spacing: .075em;
}
.article-modern .article-hero h1 {
  max-width: 1060px; margin: 0 0 20px; color: var(--article-heading);
  font-size: clamp(32px,3.2vw,46px); font-weight: 750; line-height: 1.13;
  letter-spacing: -.035em; text-wrap: balance; overflow-wrap: anywhere;
}
.article-modern .article-hero .hero-copy { max-width: 900px; margin: 0; color: var(--article-muted); font-size: 17px; line-height: 1.7; }
.article-modern .article-hero__actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px 24px; margin-top: 28px; }
.article-modern .article-primary-action,
.article-modern .article a.primary-button,
.article-modern .guide-actions .button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px;
  padding: 13px 21px; border: 1px solid #1458ed; border-radius: 12px;
  color: #fff; background: #1458ed; text-decoration: none;
  font-size: 14px; line-height: 1.5; font-weight: 700; text-align: center;
  box-shadow: 0 5px 12px #1458ed15; transition: background-color .18s,border-color .18s;
}
.article-modern .article-primary-action:hover,
.article-modern .article a.primary-button:hover,
.article-modern .guide-actions .button:hover { background: #0c46ca; border-color: #0c46ca; }
.article-modern .article-reading-link { display: inline-flex; align-items: center; gap: 12px; padding: 10px 0; color: var(--article-heading); font-size: 14px; font-weight: 650; text-decoration: none; }
.article-modern .article-reading-link:hover { color: var(--article-accent); }
.article-modern .article-layout { grid-template-columns: minmax(0,1fr) 290px; gap: 28px; }
.article-modern .article {
  padding: clamp(26px,3.3vw,48px); border: 1px solid var(--article-line); border-radius: 24px;
  background: var(--article-panel); box-shadow: 0 8px 30px #17346903; overflow-wrap: anywhere;
}
.article-modern .article h2 { margin: 38px 0 16px; color: var(--article-heading); font-size: 25px; line-height: 1.3; font-weight: 730; letter-spacing: -.025em; text-wrap: balance; }
.article-modern .article h2:first-child { margin-top: 0; }
.article-modern .article h3 { color: var(--article-heading); font-size: 19px; line-height: 1.45; }
.article-modern .article p,.article-modern .article li { color: var(--article-text); font-size: 16px; line-height: 1.8; }
.article-modern .article p { margin-bottom: 20px; }
.article-modern .article p:last-child { margin-bottom: 0; }
.article-modern .article :is(ul,ol) { padding-left: 25px; }
.article-modern .article li { padding-left: 3px; }
.article-modern .article li::marker { color: var(--article-accent); font-weight: 650; }
.article-modern .article li + li { margin-top: 10px; }
.article-modern .article a { color: var(--article-accent); text-decoration-thickness: 1px; text-underline-offset: 4px; }
.article-modern .article a:hover { text-decoration-thickness: 2px; }
.article-modern .article code { padding: 3px 6px; border-radius: 5px; color: var(--article-heading); background: var(--article-soft); font-size: .87em; overflow-wrap: anywhere; }
.article-modern :is(h2,h3,section[id],#article-content,#main-content) { scroll-margin-top: 24px; }
.article-modern .article :is(img,svg,video) { max-width: 100%; height: auto; }
.article-modern .article table { display: table; max-width: 100%; margin: 22px 0 30px; border-color: var(--article-line); border-radius: 14px; color: var(--article-text); font-size: 14px; }
.article-modern .article :is(th,td) { padding: 16px 18px; border-color: var(--article-line); color: var(--article-text); line-height: 1.65; }
.article-modern .article th { color: var(--article-heading); background: var(--article-soft); font-size: 13px; font-weight: 750; }
.article-modern .article tbody tr:nth-child(even) { background: color-mix(in srgb,var(--article-soft) 55%,transparent); }
.article-modern .callout { padding: 20px 24px; border: 1px solid var(--article-line); border-left: 4px solid var(--article-accent); border-radius: 12px; color: var(--article-text); background: var(--article-accent-soft); }
.article-modern .article-cta {
  margin-top: 38px; padding: 30px; border: 1px solid #cddcff; border-radius: 18px;
  background: radial-gradient(ellipse at 100% 0,#d9e6ff,transparent 70%),#edf3ff;
}
.article-modern .article .article-cta h2 { margin: 0 0 10px; color: #152b57; font-size: 25px; }
.article-modern .article .article-cta p { margin: 0 0 20px; color: #4a5e82; }
.article-modern .article-cta .button { min-height: 46px; padding: 12px 20px; border: 1px solid #1458ed; border-radius: 11px; color: #fff; background: #1458ed; font-size: 14px; line-height: 1.5; font-weight: 700; }
.article-modern .article-cta .button:hover { background: #0c46ca; }
.article-modern .article-cta .button-outline { border-color: #a4bce9; color: #1458ed; background: transparent; }
.article-modern .article-cta .guide-actions > a:not(.button) { color: #1458ed; }
.article-modern .side-nav { top: 24px; max-height: calc(100vh - 48px); padding: 22px; border: 1px solid var(--article-line); border-radius: 20px; background: var(--article-panel); box-shadow: none; scrollbar-width: thin; scrollbar-color: var(--article-line) transparent; }
.article-modern .side-nav a { padding: 9px 10px; border-radius: 9px; color: var(--article-muted); font-size: 13px; line-height: 1.5; overflow-wrap: anywhere; }
.article-modern .side-nav a:hover,.article-modern .side-nav a[aria-current="page"] { color: var(--article-accent); background: var(--article-accent-soft); }
.article-modern .side-nav__label { padding-left: 10px; color: var(--article-muted); font-size: 10px; }
.article-modern .side-nav__group + .side-nav__group { margin-top: 15px; padding-top: 15px; border-color: var(--article-line); }
.article-modern .side-nav details { margin: 0; padding: 0; border: 0; border-radius: 0; }
.article-modern .side-nav summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0; color: var(--article-heading); font-size: 14px; font-weight: 730; line-height: 1.5; cursor: pointer; list-style: none; }
.article-modern .side-nav summary::-webkit-details-marker { display: none; }
.article-modern .side-nav summary::after { content: "+"; font-size: 20px; font-weight: 400; color: var(--article-muted); }
.article-modern .side-nav details[open] > summary::after { content: "−"; }
.article-modern .side-nav details[open] > summary { margin-bottom: 12px; }
.article-modern .article-toc nav a { border-left: 2px solid var(--article-line); border-radius: 0 8px 8px 0; margin: 3px 0; padding-left: 13px; }
.article-modern .article-toc nav a:hover { border-left-color: var(--article-accent); }
.article-modern .side-nav .article-site-sections { padding-top: 19px; margin-top: 18px; border-top: 1px solid var(--article-line); }
.article-modern .side-nav .article-site-sections:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.article-modern .article :is(.faq-list details,details),.article-modern .faq-list > details { margin: 12px 0; padding: 20px 22px; border: 1px solid var(--article-line); border-radius: 13px; background: var(--article-soft); }
.article-modern .article details summary { display: flex; align-items: start; justify-content: space-between; gap: 18px; list-style: none; color: var(--article-heading); font-size: 16px; font-weight: 650; line-height: 1.5; cursor: pointer; }
.article-modern .article details summary::-webkit-details-marker { display: none; }
.article-modern .article details summary::after { content: "+"; flex: 0 0 18px; color: var(--article-accent); font-size: 22px; line-height: 1; font-weight: 400; }
.article-modern .article details[open] summary::after { content: "−"; }
.article-modern .article details[open] { background: var(--article-panel); border-color: color-mix(in srgb,var(--article-accent) 35%,var(--article-line)); }
.article-modern .article details p { margin-top: 14px; }
.article-modern .ean-tool { margin-bottom: 32px; padding: 26px; border: 1px solid var(--article-line); border-radius: 17px; background: var(--article-soft); box-shadow: none; }
.article-modern .ean-tool :is(.ean-tool__intro,.ean-tool__privacy,.ean-tool__notice,.ean-tool__hint) { color: var(--article-muted); }
.article-modern .ean-tool :is(.ean-tool__field,strong) { color: var(--article-heading); }
.article-modern .ean-tool .ean-tool__intro { font-size: 15px; }
.article-modern .ean-tool :is(.ean-tool__privacy,.ean-tool__notice) { font-size: 12px; line-height: 1.7; }
.article-modern .ean-tool__notice { border-color: var(--article-line); }
.article-modern .ean-tool__field input { width: 100%; padding: 12px 14px; border: 1px solid var(--article-line); border-radius: 10px; background: var(--article-panel); color: var(--article-heading); }
.article-modern .ean-tool__field input[aria-invalid="true"] { border-color: #bd3454; }
.article-modern .ean-tool__button { min-height: 48px; border-radius: 10px; background: #1458ed; border-color: #1458ed; font-size: 13px; }
.article-modern .article .ean-tool__result { margin: 2px 0 0; color: var(--article-text); background: var(--article-panel); border-color: var(--article-line); font-size: 14px; line-height: 1.6; }
.article-modern .article .ean-tool__result--success { color: #16633e; background: #effaf4; border-color: #b1dcc1; }
.article-modern .article .ean-tool__result--error { color: #a42440; background: #fff2f5; border-color: #efb6c1; }
.article-modern :is(.guide-card,.guide-toc,.ean-scan-guide) { border-color: var(--article-line); border-radius: 16px; background: var(--article-soft); }
.article-modern .marking-flow li { border-color: var(--article-line); border-radius: 14px; background: var(--article-soft); }
.article-modern .guide-meta { gap: 8px; }
.article-modern .guide-meta li { border-color: var(--article-line); background: var(--article-panel); color: var(--article-muted); }
.article-modern .site-footer { padding-top: 36px; border-top: 1px solid var(--article-line); background: var(--article-panel); color: var(--article-text); }
.article-modern .footer-grid,.article-modern .footer-bottom { width: min(1336px,calc(100% - 64px)); }
.article-modern .footer-grid { column-gap: 32px; }
.article-modern .footer-grid h3,.article-modern .footer-brand__name,.article-modern .privacy-box strong { color: var(--article-heading); }
.article-modern .footer-grid :is(a,p),.article-modern .footer-bottom,.article-modern .footer-bottom a { color: var(--article-muted); }
.article-modern .footer-grid a:hover,.article-modern .footer-bottom a:hover { color: var(--article-accent); }
.article-modern .privacy-box { border-color: var(--article-line); background: var(--article-soft); }
.article-modern .footer-bottom { margin-top: 26px; border-color: var(--article-line); }
.article-modern :is(a,summary,button,input):focus-visible { outline: 3px solid #739bf0; outline-offset: 4px; }
html[data-theme="dark"] .article-modern .article-hero { background: radial-gradient(ellipse at 100% 0,#2a416b80,transparent 62%),var(--article-panel); }
html[data-theme="dark"] .article-modern .article-cta { border-color: #375786; background: radial-gradient(ellipse at 100% 0,#244d8770,transparent 70%),#203551; }
html[data-theme="dark"] .article-modern .article-cta h2 { color: #edf3ff; }
html[data-theme="dark"] .article-modern .article-cta p { color: #c0d0e9; }
html[data-theme="dark"] .article-modern .article-cta .button { color: #fff; background: #2163ee; border-color: #2163ee; }
html[data-theme="dark"] .article-modern .article-cta :is(.button-outline,.guide-actions > a:not(.button)) { color: #bad1ff; }
html[data-theme="dark"] .article-modern .article .ean-tool__result--success { color: #98e0b7; background: #193a2d; border-color: #35684e; }
html[data-theme="dark"] .article-modern .article .ean-tool__result--error { color: #ffb4c4; background: #422537; border-color: #7a4055; }
@media (max-width: 1200px) {
  .home-start.article-modern .reference-header .site-nav { grid-template-columns: 1fr auto; padding: 12px 20px; }
  .article-modern .seo-header-menu { grid-column: 1/-1; grid-row: 2; justify-content: center; }
  .home-start.article-modern .reference-header .site-nav__actions { grid-column: 2; grid-row: 1; }
  .article-modern .article-layout { grid-template-columns: minmax(0,1fr) 260px; gap: 22px; }
  .article-modern .ean-tool__form { grid-template-columns: 1fr; }
  .article-modern .ean-tool__button { width: 100%; }
}
@media (max-width: 960px) {
  .article-modern .content-shell { width: calc(100% - 40px); }
  .article-modern .article-layout { grid-template-columns: minmax(0,1fr); gap: 18px; }
  .article-modern .side-nav { display: block; position: static; grid-column: 1; grid-row: 1; max-height: none; padding: 18px 22px; }
  .article-modern .article { grid-column: 1; grid-row: 2; }
  .article-modern .side-nav .article-site-sections { margin-top: 14px; padding-top: 14px; }
  .article-modern .footer-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .article-modern .footer-brand,.article-modern .privacy-box { grid-column: 1/-1; }
}
@media (max-width: 600px) {
  .home-start.article-modern .reference-header { margin: 12px auto 18px; }
  .home-start.article-modern .reference-header .site-nav { padding: 10px 12px; gap: 8px; min-height: 64px; }
  .home-start.article-modern .reference-header .site-nav__brand { font-size: 17px; }
  .article-modern .seo-header-menu { justify-content: space-between; gap: 0; font-size: 12px; }
  .article-modern .seo-header-menu > a,.article-modern .seo-header-menu summary { padding: 12px 7px; }
  .article-modern .content-shell { width: calc(100% - 24px); padding-top: 0; padding-bottom: 32px; }
  .article-modern .breadcrumbs { margin: 0 6px 14px; font-size: 12px; }
  .article-modern .article-hero { margin-bottom: 16px; padding: 26px 22px; border-radius: 22px; }
  .article-modern .article-hero .eyebrow { margin-bottom: 15px; font-size: 10px; letter-spacing: .055em; }
  .article-modern .article-hero h1 { margin-bottom: 15px; font-size: 30px; line-height: 1.17; letter-spacing: -.035em; text-wrap: auto; }
  .article-modern .article-hero .hero-copy { font-size: 15px; line-height: 1.7; }
  .article-modern .article-hero__actions { align-items: stretch; gap: 8px; margin-top: 23px; }
  .article-modern .article-primary-action { width: 100%; }
  .article-modern .article-reading-link { margin: 2px auto -6px; justify-content: center; min-height: 42px; }
  .article-modern .article { padding: 26px 20px; border-radius: 20px; }
  .article-modern .article h2 { margin-top: 31px; margin-bottom: 13px; font-size: 22px; }
  .article-modern .article p,.article-modern .article li { font-size: 15px; line-height: 1.75; }
  .article-modern .article h3 { font-size: 18px; }
  .article-modern .article table { display: block; overflow-x: auto; font-size: 13px; }
  .article-modern .article :is(th,td) { padding: 13px 12px; }
  .article-modern .article details { padding: 17px; }
  .article-modern .article details summary { font-size: 15px; }
  .article-modern .article .article-cta { padding: 23px; border-radius: 15px; }
  .article-modern .article .article-cta h2 { font-size: 22px; }
  .article-modern .article-cta .button { width: 100%; }
  .article-modern .ean-tool { padding: 20px 17px; }
  .article-modern .ean-tool__field { font-size: 13px; }
  .article-modern .ean-tool__form { grid-template-columns: minmax(0,1fr); }
  .article-modern .article .ean-tool :is(.ean-tool__privacy,.ean-tool__notice) { font-size: 12px; }
  .article-modern .callout { padding: 18px; }
  .article-modern .footer-grid,.article-modern .footer-bottom { width: calc(100% - 40px); }
  .article-modern .footer-grid { grid-template-columns: repeat(2,minmax(0,1fr)); column-gap: 20px; }
}
@media (max-width: 359px) {
  .home-start.article-modern .reference-header .site-nav__brand { font-size: 15px; gap: 7px; }
  .article-modern .seo-header-menu { font-size: 11px; }
  .article-modern .seo-header-menu > a,.article-modern .seo-header-menu summary { padding-inline: 5px; }
  .article-modern .article-hero h1 { font-size: 27px; }
  .article-modern .article,.article-modern .article-hero { padding-inline: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  .article-modern * { scroll-behavior: auto; transition: none !important; }
}
@media print {
  .article-modern .reference-header,.article-modern .side-nav,.article-modern .site-footer,.article-modern .article-hero__actions { display: none; }
  .article-modern .content-shell { width: 100%; }
  .article-modern .article-layout { display: block; }
  .article-modern .article,.article-modern .article-hero { box-shadow: none; }
}