*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#142033;background:#fff;line-height:1.6}a{color:inherit;text-decoration:none}img,svg,video{max-width:100%}.container{width:min(1160px,calc(100% - 36px));margin:auto}.narrow{width:min(820px,100%)}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid #e8edf4}.header-inner{height:70px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px}.barcode-mark{letter-spacing:-3px;font-size:24px;color:var(--accent)}.main-nav{display:flex;align-items:center;gap:24px;font-size:14px;font-weight:650}.main-nav>a:not(.btn):hover{color:var(--accent)}.nav-toggle{display:none;background:none;border:0;font-weight:700}.btn{appearance:none;border:1px solid #d7dfeb;border-radius:10px;padding:11px 16px;font:inherit;font-weight:750;cursor:pointer;background:#fff;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.ghost{background:#fff}.btn.small{padding:8px 12px;border-radius:9px}.hero{padding:78px 0 64px;background:linear-gradient(180deg,#f7faff 0,#fff 100%)}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}.eyebrow{font-size:12px;font-weight:850;letter-spacing:.1em;color:var(--accent)}h1,h2,h3{line-height:1.15;color:#0d1726}h1{font-size:clamp(40px,6vw,66px);letter-spacing:-.045em;margin:.35em 0 .3em}h2{font-size:clamp(28px,4vw,42px);letter-spacing:-.025em}h3{font-size:20px}.lead{font-size:20px;color:#536176;max-width:700px}.hero-actions,.actions,.trust-row,.related-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.trust-row{margin-top:24px;color:#526174;font-size:14px}.quick-card,.tool-shell,.contact-form{background:#fff;border:1px solid #dde5ef;border-radius:18px;box-shadow:0 18px 48px rgba(26,47,80,.08)}.quick-card{padding:24px}.card-head{display:flex;justify-content:space-between;font-weight:800;margin-bottom:18px}.quick-card label,.tool-controls label,.contact-form label{display:grid;gap:7px;font-weight:700;font-size:14px}input,select,textarea{width:100%;border:1px solid #cad5e3;border-radius:10px;padding:12px 13px;font:inherit;background:#fff;color:#142033}input:focus,select:focus,textarea:focus{outline:3px solid color-mix(in srgb,var(--accent) 15%,transparent);border-color:var(--accent)}.barcode-stage{display:grid;place-items:center;min-height:150px;padding:20px;background:#f8fafc;border:1px dashed #cbd5e1;border-radius:12px;margin:16px 0;overflow:auto}.barcode-stage.large{min-height:240px}.section{padding:72px 0}.section.alt{background:#f7f9fc}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}.section-heading h2{margin:.25em 0 0}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.tool-card,.compact-card,.article-card,.task-grid>a{border:1px solid #dfe6ef;border-radius:15px;padding:22px;background:#fff;transition:.18s ease}.tool-card:hover,.compact-card:hover,.task-grid>a:hover{transform:translateY(-2px);border-color:#b8c7db;box-shadow:0 12px 28px rgba(25,45,73,.08)}.tool-card p,.article-card p,.compact-card span{color:#5d6b7e}.tool-icon{display:inline-grid;place-items:center;width:38px;height:38px;background:#edf4ff;color:var(--accent);border-radius:10px}.card-link{font-weight:800;color:var(--accent)}.task-grid,.compact-grid,.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.task-grid>a,.compact-card{display:grid;gap:8px}.page-hero{padding:58px 0 42px;background:#f7faff;border-bottom:1px solid #e7edf5}.page-hero h1{font-size:clamp(36px,5vw,54px)}.breadcrumbs{font-size:13px;color:#66758a;display:flex;gap:8px}.tool-section{padding:36px 0}.tool-shell{display:grid;grid-template-columns:.82fr 1.18fr;overflow:hidden}.tool-controls,.tool-result{padding:28px}.tool-controls{display:grid;align-content:start;gap:18px;background:#fbfcfe;border-right:1px solid #e3e9f1}.tool-result{min-width:0}.advanced{border:1px solid #dde5ef;border-radius:10px;padding:12px}.advanced summary{font-weight:800;cursor:pointer}.settings-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:12px}.check{display:flex!important;align-items:center;grid-template-columns:auto 1fr!important}.check input{width:auto}.validation,.result-panel{border-radius:10px;padding:12px 14px;background:#f4f6f8;color:#475569}.validation.success,.result-panel.success{background:#ecfdf3;color:#166534;border:1px solid #bbf7d0}.validation.error,.result-panel.error{background:#fff1f2;color:#9f1239;border:1px solid #fecdd3}.result-panel{display:grid;grid-template-columns:auto 1fr;gap:8px 18px}.result-panel.empty{display:block}.computed-info{font-size:14px;color:#475569}.content-section{border-top:1px solid #edf1f6}.article-content{font-size:18px}.article-content h2{margin-top:2em}.article-content h3{margin-top:1.6em}.article-content p,.article-content li{color:#354256}.article-content table,table{border-collapse:collapse;width:100%;font-size:15px}.article-content th,.article-content td,th,td{padding:11px;border:1px solid #dce4ee;text-align:left}.related-row a{padding:9px 12px;border:1px solid #dce4ee;border-radius:9px;font-weight:700}.bulk-output{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;max-height:600px;overflow:auto;margin:16px 0}.bulk-item{border:1px solid #e2e8f0;border-radius:10px;padding:10px;overflow:auto}.bad{color:#be123c}.scanner-tabs video{width:100%;min-height:280px;background:#111827;border-radius:12px;margin:12px 0}.label-sheet{display:block;background:#fff}.label-page{display:grid;gap:5mm;background:#fff;max-width:100%;overflow:auto}.label-cell{border:1px dashed #cbd5e1;display:grid;place-items:center;padding:4mm;overflow:hidden}.category-block{margin-bottom:50px}.byline{color:#667085;font-size:14px}.contact-form{padding:28px;display:grid;gap:18px}.alert{padding:14px;border-radius:10px;margin:12px 0}.alert.error{background:#fff1f2;color:#9f1239}.alert.success{background:#ecfdf3;color:#166534}.search-form{display:flex;gap:10px}.search-result{display:grid;padding:16px 0;border-bottom:1px solid #e5eaf1}.search-result span{color:#637083}.site-footer{background:#101826;color:#d8e0ec;padding:54px 0 24px;margin-top:40px}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:30px}.footer-grid h3{color:#fff}.footer-grid a{display:block;color:#b9c4d3;margin:8px 0}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #2a3546;margin-top:30px;padding-top:22px;color:#93a1b4;font-size:13px}.muted{color:#718096}.table-wrap{overflow:auto}.ad-slot-public{width:min(1160px,calc(100% - 36px));margin:24px auto;text-align:center;overflow:hidden}.mini-copy{border:0;background:#e9f1ff;color:#1558b0;padding:4px 8px;border-radius:6px;cursor:pointer}
@media(max-width:850px){.nav-toggle{display:block}.main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;border-bottom:1px solid #e4e9f0;padding:18px;flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.hero-grid,.tool-shell{grid-template-columns:1fr}.hero{padding-top:48px}.tool-controls{border-right:0;border-bottom:1px solid #e3e9f1}.tool-grid,.task-grid,.compact-grid,.article-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.container{width:min(100% - 24px,1160px)}.tool-grid,.task-grid,.compact-grid,.article-grid,.bulk-output{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column}.hero-actions .btn{width:100%}.settings-grid{grid-template-columns:1fr}.search-form{flex-direction:column}h1{font-size:40px}.section{padding:52px 0}}
@media print{.site-header,.site-footer,.page-hero,.tool-controls,.content-section,.actions,.validation,.tool-result>.btn{display:none!important}.tool-shell{display:block;border:0;box-shadow:none}.tool-result{padding:0}.label-cell{break-inside:avoid}.label-sheet{display:block!important}.label-page{overflow:visible!important}}

.homepage-sections{display:flex;flex-direction:column}
.hp-field{position:absolute!important;left:-10000px!important;width:1px!important;height:1px!important;overflow:hidden!important}.scan-tab-buttons{display:flex;gap:8px}.csv-map-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.csv-preview{font-size:12px;border:1px solid #e2e8f0;border-radius:9px;padding:10px;overflow:auto}.csv-preview>div{display:grid;grid-template-columns:repeat(4,minmax(90px,1fr));gap:6px;border-top:1px solid #edf1f5;padding:4px 0}.label-sheet{max-width:100%;overflow:auto}.label-page{width:max-content;max-width:100%;margin:0 auto 20px}.label-cell{box-sizing:border-box;text-align:center}.label-cell svg{max-width:100%;max-height:75%}.label-name{font-size:11px;line-height:1.2}.label-error{color:#9f1239;font-size:11px}.calc-details{grid-column:1/-1}.computed-info code{background:#f1f5f9;padding:2px 5px;border-radius:5px}.neutral{background:#f4f6f8;color:#475569}.scanner-tabs small{color:#64748b}
@media(max-width:560px){.csv-map-grid{grid-template-columns:1fr}}
.nav-dropdown{position:relative}.nav-parent-row{display:flex;align-items:center;gap:3px}.nav-parent-row>a:hover{color:var(--accent)}.submenu-toggle{border:0;background:transparent;color:#59677a;font-size:16px;line-height:1;padding:5px;cursor:pointer}.nav-submenu{display:none;position:absolute;top:calc(100% + 12px);left:-14px;min-width:230px;background:#fff;border:1px solid #dfe6ef;border-radius:12px;padding:8px;box-shadow:0 16px 42px rgba(23,34,52,.14);z-index:70}.nav-submenu a{display:block;padding:9px 10px;border-radius:8px;white-space:nowrap}.nav-submenu a:hover{background:#f4f7fb;color:var(--accent)}.nav-dropdown:hover .nav-submenu,.nav-dropdown:focus-within .nav-submenu,.nav-dropdown.open .nav-submenu{display:block}
@media(max-width:850px){.nav-dropdown{width:100%}.nav-parent-row{justify-content:space-between}.nav-parent-row>a{padding:5px 0}.submenu-toggle{padding:7px 10px}.nav-submenu{position:static;display:none;box-shadow:none;border:0;border-left:2px solid #e3e9f1;border-radius:0;margin:5px 0 5px 8px;padding:2px 0 2px 10px}.nav-dropdown.open .nav-submenu,.nav-dropdown:focus-within .nav-submenu{display:block}.nav-submenu a{white-space:normal}}

.site-logo{display:block;max-height:42px;max-width:210px;width:auto}

.announcement{background:#eef5ff;border-bottom:1px solid #d9e6f7;padding:8px 0;text-align:center;font-size:14px;font-weight:700}.announcement a{color:var(--accent)}.maintenance-page{min-height:100vh;display:grid;place-items:center;text-align:center;padding:32px;background:#f7faff}.maintenance-page>div{max-width:620px}.maintenance-page h1{font-size:clamp(36px,6vw,62px)}
.hero-grid.single{grid-template-columns:1fr;max-width:860px}.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.trust-card{border:1px solid #dfe6ef;border-radius:15px;padding:22px;background:#fff}.trust-card strong{font-size:18px;color:#0d1726}.trust-card p{margin:.55em 0 0;color:#5d6b7e}.cta-band{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:32px;border:1px solid #dfe6ef;border-radius:18px;background:#f7faff}.cta-band h2{margin:0 0 .3em}.cta-band p{margin:0;color:#5d6b7e}@media(max-width:850px){.trust-grid{grid-template-columns:1fr 1fr}.cta-band{align-items:flex-start;flex-direction:column}}@media(max-width:560px){.trust-grid{grid-template-columns:1fr}}
/* V5 specialist content additions */
.author-profile{display:flex;gap:1.25rem;align-items:center}.author-photo{width:96px;height:96px;object-fit:cover;border-radius:50%;border:1px solid var(--line,#dfe3e8)}.spec-table{overflow:auto;margin:1.25rem 0}.spec-table table{width:100%;border-collapse:collapse}.spec-table th,.spec-table td{padding:.75rem;text-align:left;border-bottom:1px solid var(--line,#e6e9ed)}.spec-table th{width:36%;font-weight:650}.result-panel small{display:block;margin-top:.8rem;line-height:1.5}.card-grid .card small{display:block;margin-top:.6rem;opacity:.72}@media(max-width:640px){.author-profile{align-items:flex-start}.author-photo{width:72px;height:72px}}

/* V5.2 guide/article UX refinements */
.article-hero{padding:46px 0 34px}.article-hero .breadcrumbs{margin-bottom:14px}.article-hero .eyebrow{display:block;margin-bottom:8px}.article-hero h1{margin:0 0 14px;font-size:clamp(36px,4.7vw,52px)}.article-hero .container>p{margin:0 0 12px;max-width:760px;color:#46556a;font-size:17px;line-height:1.62}.article-hero .byline{margin-top:8px}.article-body-section{padding:46px 0 58px}.article-content{font-size:18px;line-height:1.72}.article-content> :first-child{margin-top:0!important}.article-content p{margin:0 0 18px;color:#354256}.article-content h2{font-size:clamp(28px,3vw,36px);line-height:1.2;margin:42px 0 16px}.article-content h3{font-size:24px;line-height:1.28;margin:32px 0 12px}.article-content h4{font-size:20px;line-height:1.3;margin:26px 0 10px}.article-content ul,.article-content ol{margin:10px 0 20px;padding-left:1.4em}.article-content li{margin:.35em 0;color:#354256}.article-content table{margin:18px 0 24px}.article-content table+h2{margin-top:30px}.article-content figure{margin:22px 0 28px}.article-content img{height:auto}.guide-feature-image{margin:0 0 28px}.guide-feature-image img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border-radius:14px;border:1px solid #e2e8f0}.article-content blockquote{margin:24px 0;padding:14px 18px;border-left:4px solid var(--accent);background:#f7faff;color:#354256}.article-content hr{border:0;border-top:1px solid #e5eaf1;margin:38px 0 24px}.preview-banner{background:#fff8db;border-bottom:1px solid #f0d978;color:#6b5710;font-size:14px;font-weight:700;padding:9px 0}.article-card{overflow:hidden}.article-card-image{display:block;margin:-22px -22px 18px}.article-card-image img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}.article-card h2{font-size:22px;line-height:1.27;margin:.55em 0 .45em}.article-card p{margin:.45em 0 1em;line-height:1.6}.guides-empty{grid-column:1/-1;padding:28px;border:1px dashed #ccd6e3;border-radius:14px;color:#5f6f84;background:#fafcff}.related-row{margin-top:8px}
@media(max-width:560px){.article-hero{padding:34px 0 28px}.article-body-section{padding:34px 0 46px}.article-content{font-size:17px;line-height:1.7}.article-content h2{font-size:28px;margin-top:34px}.article-content h3{font-size:22px;margin-top:28px}.guide-feature-image{margin-bottom:22px}}


/* V5.4: unmistakable inline links inside guide/article content */
.article-content a[href]{
  color:#0b63ce!important;
  font-weight:700!important;
  text-decoration-line:underline!important;
  text-decoration-thickness:2px!important;
  text-underline-offset:3px!important;
  text-decoration-color:#6aa4e8!important;
  background:#eef5ff!important;
  padding:0 .12em!important;
  border-radius:3px!important;
}
.article-content a[href]:visited{
  color:#1558b0!important;
}
.article-content a[href]:hover{
  color:#084b9b!important;
  background:#dfeeff!important;
  text-decoration-color:currentColor!important;
}
.article-content a[href]:focus-visible{
  outline:3px solid rgba(23,105,224,.28)!important;
  outline-offset:2px!important;
}