/* Artikel im Ratgeber: Lesespalte mit Inhaltsverzeichnis. Klassen mit Präfix ar-. Branchen: ar-fracht (dunkles Foto), ar-haus (heller Kopf mit Gebäudefoto). */
body[class*="p-"] .ar { --ar-m: 620px; color: var(--k-text); }
body[class*="p-"] .ar a { color: var(--k-acc); text-underline-offset: 3px; }
body[class*="p-"] .ar a:focus-visible, body[class*="p-"] .ar summary:focus-visible { outline: 2px solid var(--k-ink); outline-offset: 3px; border-radius: 4px; }

/* Kopf */
.ar-kopf { position: relative; isolation: isolate; border-bottom: 1px solid var(--k-line); }
.ar-kopf .kw { padding-top: 20px; padding-bottom: clamp(44px, 6vw, 80px); }
.ar-krumen { display: flex; flex-wrap: wrap; align-items: center; gap: 0 10px; font: 500 14px/1 var(--sans); margin: 0 0 clamp(24px, 4vw, 48px); }
.ar-krumen a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; }
.ar-krumen a::after { content: "/"; margin-left: 10px; opacity: .5; }
body[class*="p-"] .ar .ar-krumen a { color: inherit; }
body[class*="p-"] .ar .ar-krumen a:hover { text-decoration: underline; }
body[class*="p-"] .ar-kopf h1 { max-width: 20ch; font-size: clamp(34px, 4.6vw, 56px); line-height: 1.07; letter-spacing: -.032em; }
body[class*="p-"] .ar-kopf .ar-lead { font-size: 19px; line-height: 1.6; max-width: 56ch; margin: 22px 0 30px; }
.ar-btns { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.ar-meta { display: flex; flex-wrap: wrap; gap: 6px 22px; margin: 26px 0 0; font-size: 14px; }
.ar-meta span + span::before { content: ""; display: inline-block; width: 1px; height: 12px; background: currentColor; opacity: .35; margin-right: 22px; vertical-align: -1px; }

/* Logistik: gedecktes Foto */
.ar-fracht .ar-kopf { background: var(--k-ink); color: #d3d9d1; border-bottom: 0; }
.ar-fracht .ar-kopf > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.ar-fracht .ar-kopf::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(13, 21, 18, .9) 0%, rgba(13, 21, 18, .78) 52%, rgba(13, 21, 18, .56) 100%); }
body[class*="p-"] .ar-fracht .ar-kopf h1 { color: #f4f1ea; }
body[class*="p-"] .ar-fracht .ar-krumen, body[class*="p-"] .ar-fracht .ar-meta { color: #b3bdb6; }
body[class*="p-"] .ar-fracht .ar-krumen a { color: #d3d9d1; }
body[class*="p-"] .ar-fracht .ar-kopf .kb-rand { background: transparent; color: #f4f1ea; border-color: rgba(244, 241, 234, .38); }
body[class*="p-"] .ar-fracht .ar-kopf .kb-rand:hover { border-color: #f4f1ea; }
/* Heller Kopf mit optionalem Bild rechts (Prüf- und Wartungsbetriebe) */
.ar-haus .ar-kopf { background: linear-gradient(180deg, #fff 0%, var(--k-alt) 100%); }
.ar-haus .ar-kopf .kw { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px 24px; align-items: end; }
.ar-haus .ar-kopf-in { grid-column: 1 / span 7; }
.ar-haus .ar-kopf-bild { grid-column: 8 / span 5; align-self: end; }
.ar-haus .ar-kopf-bild img { display: block; width: 100%; aspect-ratio: 5 / 4; height: auto; object-fit: cover; border-radius: 14px; }
.ar-haus .ar-krumen, .ar-haus .ar-meta { color: var(--k-mut); }

/* Raster: Lesespalte und Verzeichnis */
.ar-raster { display: grid; grid-template-columns: minmax(0, var(--ar-m)) 280px; gap: 0 clamp(48px, 7vw, 104px); justify-content: center; padding-top: clamp(40px, 5vw, 64px); padding-bottom: clamp(56px, 8vw, 104px); }
.ar-text { min-width: 0; }
.ar-tocm { display: none; }
.ar-tocd { grid-column: 2; grid-row: 1; align-self: start; position: sticky; top: 96px; padding-top: 4px; }
.ar-tocd-t { margin: 0 0 14px; font: 600 14px/1.2 var(--sans); color: var(--k-ink); }
.ar-tocd ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--k-line); }
.ar-tocd li a { display: block; padding: 8px 0 8px 16px; margin-left: -1px; font: 500 14.5px/1.35 var(--sans); color: var(--k-mut); text-decoration: none; border-left: 1px solid transparent; transition: color .2s, border-color .2s; }
body[class*="p-"] .ar .ar-tocd li a { color: var(--k-mut); }
body[class*="p-"] .ar .ar-tocd li a:hover { color: var(--k-ink); }
body[class*="p-"] .ar .ar-tocd li a[aria-current] { color: var(--k-ink); font-weight: 600; border-left-color: var(--k-ink); }
.ar-tocd-dl { display: flex; align-items: center; gap: 10px; margin-top: 28px; padding: 14px 16px; border: 1px solid var(--k-line2); border-radius: 12px; font: 600 14.5px/1.3 var(--sans); text-decoration: none; min-height: 48px; }
body[class*="p-"] .ar .ar-tocd-dl { color: var(--k-ink); }
body[class*="p-"] .ar .ar-tocd-dl:hover { border-color: var(--k-ink); }
.ar-tocd-dl svg { width: 22px; height: 22px; flex: none; color: var(--k-acc); }

/* Text */
.ar-text > section { scroll-margin-top: 92px; margin-top: clamp(48px, 6vw, 72px); }
.ar-text > .ar-kurz + section { margin-top: clamp(48px, 6vw, 64px); }
body[class*="p-"] .ar-text h2 { font-size: clamp(25px, 2.6vw, 31px); line-height: 1.18; letter-spacing: -.026em; margin: 0 0 20px; max-width: 30ch; }
body[class*="p-"] .ar-text h3 { font-size: 18.5px; line-height: 1.3; letter-spacing: -.012em; margin: 0 0 12px; }
.ar-text p, .ar-text li, .ar-text dd { font-size: 17px; line-height: 1.7; }
.ar-text p { margin: 0 0 18px; }
.ar-text b { color: var(--k-ink); font-weight: 600; }
.ar-vor { font-size: 18px; line-height: 1.6; color: var(--k-ink); }
.ar-note { font-size: 14.5px; line-height: 1.6; color: var(--k-mut); }
.ar-text p.ar-note { font-size: 14.5px; line-height: 1.6; }
.ar-kurz { background: var(--k-alt); border: 1px solid var(--k-line); border-radius: 14px; padding: 24px 26px 8px; }
.ar-kurz-t { display: flex; align-items: center; gap: 10px; margin: 0 0 12px; font: 600 14.5px/1.2 var(--sans); color: var(--k-ink); }
.ar-kurz-t::before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--k-gold); }
.ar-text .ar-kurz p:not(.ar-kurz-t) { font-size: 18px; line-height: 1.62; color: var(--k-ink); }
.ar-liste { list-style: none; margin: 0 0 20px; padding: 0; }
.ar-liste li { position: relative; padding: 0 0 14px 22px; }
.ar-liste li::before { content: ""; position: absolute; left: 2px; top: .72em; width: 6px; height: 6px; border-radius: 50%; background: var(--k-gold); }
.ar-quellen li { font-size: 16px; padding-bottom: 10px; }
.ar-check { list-style: none; margin: 0 0 22px; padding: 0; border-top: 1px solid var(--k-line2); }
.ar-check li { position: relative; padding: 16px 0 16px 38px; border-bottom: 1px solid var(--k-line); }
.ar-check li::before { content: ""; position: absolute; left: 2px; top: 20px; width: 18px; height: 18px; border: 1.5px solid var(--k-line2); border-radius: 4px; background: #fff; }

/* Prüfpunkte */
.ar-pruef { border-top: 2px solid var(--k-ink); margin-top: 8px; }
.ar-pp { padding: 24px 0 12px; border-bottom: 1px solid var(--k-line); }
.ar-pp dl { margin: 0; }
.ar-pp dl > div { padding: 0 0 12px; }
.ar-pp dt { font: 600 14px/1.3 var(--sans); color: var(--k-acc); margin-bottom: 3px; }
.ar-pp dd { margin: 0; }
.ar-text .ar-pp dd { font-size: 16.5px; line-height: 1.65; }
@media (min-width: 641px) { .ar-pp dl > div { display: grid; grid-template-columns: 148px minmax(0, 1fr); gap: 0 16px; } .ar-pp dt { padding-top: 3px; margin: 0; } }

/* Beispielrechnung (Produktfläche) */
.ar-bsp { background: var(--k-ink); color: #d3d9d1; border-radius: 14px; padding: 26px 28px 10px; }
.ar-text .ar-bsp p { color: #e6e9e3; font-variant-numeric: tabular-nums; }
.ar-text .ar-bsp p.ar-bsp-n { font-size: 14px; color: #e0bd62; margin-bottom: 14px; padding-bottom: 14px; border-bottom: 1px solid rgba(255, 255, 255, .12); }
body[class*="p-"] .ar .ar-bsp a { color: #e0bd62; }

/* Tabelle der Prüffristen: als gestapeltes Dokument, nie breiter als die Spalte */
.ar-tab thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.ar-tab table, .ar-tab tbody, .ar-tab tr, .ar-tab th, .ar-tab td { display: block; }
.ar-tab { border-top: 2px solid var(--k-ink); margin: 8px 0 20px; }
.ar-tab tr { padding: 24px 0 10px; border-bottom: 1px solid var(--k-line); }
.ar-tab tbody th { text-align: left; font: 600 19px/1.3 var(--sans); letter-spacing: -.012em; color: var(--k-ink); margin-bottom: 12px; }
.ar-tab td { position: relative; font-size: 16px; line-height: 1.62; padding: 0 0 12px; }
.ar-tab td::before { content: attr(data-label); display: block; font: 600 14px/1.3 var(--sans); color: var(--k-acc); margin-bottom: 2px; }
@media (min-width: 641px) { .ar-tab td { padding-left: 128px; } .ar-tab td::before { position: absolute; left: 0; top: 2px; width: 112px; } }

/* Download als Dokument */
.ar-dok { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; gap: 18px; align-items: center; border: 1px solid var(--k-line2); border-radius: 14px; padding: 22px 24px; }
.ar-dok-i { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 10px; background: var(--k-alt); color: var(--k-acc); }
.ar-dok-i svg { width: 24px; height: 24px; }
.ar-text .ar-dok p { margin: 0; font-size: 16px; line-height: 1.55; }
.ar-text .ar-dok .ar-dok-m { margin-top: 6px; font-size: 14px; color: var(--k-mut); }

/* FAQ */
.ar-faq { border-top: 1px solid var(--k-line2); }
.ar-faq details { border-bottom: 1px solid var(--k-line); }
.ar-faq summary { list-style: none; cursor: pointer; position: relative; min-height: 56px; display: flex; align-items: center; padding: 14px 40px 14px 0; font: 600 17.5px/1.35 var(--sans); color: var(--k-ink); letter-spacing: -.012em; }
.ar-faq summary::-webkit-details-marker { display: none; }
.ar-faq summary::after { content: ""; position: absolute; right: 6px; top: 50%; width: 9px; height: 9px; border-right: 2px solid var(--k-ink); border-bottom: 2px solid var(--k-ink); transform: translateY(-70%) rotate(45deg); transition: transform .3s var(--ease); }
.ar-faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.ar-faq details p { margin: 0 0 20px; }

/* Verwandt */
.ar-verw { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--k-line2); }
.ar-verw a { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 18px 2px; min-height: 64px; border-bottom: 1px solid var(--k-line); text-decoration: none; transition: padding .25s var(--ease); }
body[class*="p-"] .ar .ar-verw a { color: var(--k-ink); }
body[class*="p-"] .ar .ar-verw a:hover { color: var(--k-acc); padding-left: 10px; }
.ar-verw b { display: block; font: 600 17px/1.35 var(--sans); letter-spacing: -.01em; color: inherit; }
.ar-verw small { display: block; margin-top: 3px; font: 400 14.5px/1.45 var(--sans); color: var(--k-mut); }
.ar-verw svg { width: 18px; height: 18px; flex: none; }

/* Abschluss */
.ar-ende { background: var(--k-alt); border-top: 1px solid var(--k-line); padding: clamp(56px, 7vw, 88px) 0; }
.ar-ende .kw { display: grid; grid-template-columns: minmax(0, var(--ar-m)) 280px; gap: 0 clamp(48px, 7vw, 104px); justify-content: center; }
.ar-ende .kw > * { grid-column: 1; }
body[class*="p-"] .ar-ende h2 { font-size: clamp(26px, 3vw, 34px); line-height: 1.15; }
.ar-ende p { margin: 14px 0 26px; font-size: 17px; }
.ar-ende .ar-btns { gap: 18px; }
body[class*="p-"] .ar .ar-mail { display: inline-flex; align-items: center; min-height: 44px; color: var(--k-text); font-size: 15px; }

@media (max-width: 1020px) {
  .ar-raster { grid-template-columns: minmax(0, var(--ar-m)); }
  .ar-tocd { display: none; }
  .ar-ende .kw { grid-template-columns: minmax(0, var(--ar-m)); }
  .ar-tocm { display: block; margin-bottom: 36px; border: 1px solid var(--k-line2); border-radius: 12px; }
  .ar-tocm summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; min-height: 52px; padding: 0 18px; font: 600 15.5px/1.2 var(--sans); color: var(--k-ink); }
  .ar-tocm summary::-webkit-details-marker { display: none; }
  .ar-tocm summary::after { content: ""; width: 8px; height: 8px; border-right: 2px solid var(--k-ink); border-bottom: 2px solid var(--k-ink); transform: translateY(-2px) rotate(45deg); transition: transform .3s var(--ease); }
  .ar-tocm[open] summary::after { transform: translateY(2px) rotate(-135deg); }
  .ar-tocm ol { list-style: none; margin: 0; padding: 0 18px 8px; }
  .ar-tocm li a { display: flex; align-items: center; min-height: 44px; border-top: 1px solid var(--k-line); text-decoration: none; font: 500 15.5px/1.3 var(--sans); }
  .ar-haus .ar-kopf-in, .ar-haus .ar-kopf-bild { grid-column: 1 / -1; }
  .ar-haus .ar-kopf-bild img { aspect-ratio: 16 / 10; }
}
@media (max-width: 640px) {
  .ar-kopf .kw { padding-bottom: 40px; }
  .ar-btns .kb { width: 100%; }
  .ar-kurz { padding: 20px 20px 4px; }
  .ar-bsp { padding: 22px 20px 6px; }
  .ar-dok { grid-template-columns: 44px minmax(0, 1fr); }
  .ar-dok .kb { grid-column: 1 / -1; }
  .ar-fracht .ar-kopf::after { background: rgba(13, 21, 18, .82); }
  .ar-ende .ar-btns { flex-direction: column; align-items: stretch; text-align: center; }
}
@media (prefers-reduced-motion: reduce) { .ar-tocd li a, .ar-verw a, .ar-faq summary::after, .ar-tocm summary::after { transition: none; } }


/* Selbstnachsehen: bewusst klein, nur als Hinweis */
.ar-klein { padding-block: 0; }
.ar-klein details { border-top: 1px solid var(--k-line); padding: 18px 0; color: var(--k-mut); font-size: 15px; }
.ar-klein summary { cursor: pointer; color: var(--k-text); font: 500 15px/1.5 var(--sans); min-height: 44px; display: flex; align-items: center; }
.ar-klein ul { margin-top: 10px; }
.ar-klein .ar-klein-dl { margin: 14px 0 0; font-size: 14px; }

/* Beispiel-Dokument im Artikel (Prüf- und Wartungsbetriebe) */
.ar-mappe { margin: 28px 0 0; background: #fbfaf6; color: var(--k-ink); border: 1px solid var(--k-line2); border-radius: 12px; overflow: hidden; }
.ar-mappe-k { display: flex; justify-content: space-between; gap: 16px; padding: 14px 22px; border-bottom: 1px solid var(--k-line); font: 500 14px/1.3 var(--sans); color: var(--k-mut); }
.ar-mappe-k b { color: var(--k-ink); font-weight: 600; }
.ar-mappe-t { padding: 18px 22px 6px; }
.ar-mappe-t strong { font: 600 clamp(20px, 2.4vw, 24px)/1.2 var(--sans); letter-spacing: -.025em; }
.ar-mappe ul { list-style: none; margin: 10px 0 0; padding: 0 22px 4px; }
.ar-mappe li { display: grid; grid-template-columns: 92px minmax(0, 1fr); gap: 14px; align-items: baseline; padding: 12px 0; border-top: 1px solid var(--k-line); }
.ar-mappe li::before { display: none; }
.ar-d-st { font: 600 13px/1.2 var(--sans); padding: 4px 8px; border-radius: 6px; text-align: center; background: var(--k-alt); color: var(--k-text); }
.ar-d-ok .ar-d-st { background: #e6f1ea; color: #1f5b41; }
.ar-d-offen .ar-d-st { background: #f5ead0; color: #6b4f0e; }
.ar-mappe li b { display: block; font: 600 15.5px/1.35 var(--sans); }
.ar-mappe li i { display: block; font-style: normal; font-size: 14px; color: var(--k-mut); margin-top: 2px; }
.ar-mappe figcaption { padding: 12px 22px 16px; border-top: 1px solid var(--k-line); font-size: 14px; color: var(--k-mut); }
@media (max-width: 640px) { .ar-mappe li { grid-template-columns: 1fr; gap: 6px; } .ar-d-st { justify-self: start; } }

/* Runde Handy/Tablet 28.10.: Lesbarkeit, ruhige Köpfe, Bewegung */
body[class*="p-"] .ar :is(.ar-text p, .ar-text li, .ar-text dd, .ar-text dt, .ar-lead, .ar-verw small, .ar-mappe, .ar-faq details, .ar-ende p, .ar-tocm a) { hyphens: manual; overflow-wrap: break-word; }
.ar-text p, .ar-text li, .ar-text dd { text-wrap: pretty; }
body[class*="p-"] .ar-kopf h1, body[class*="p-"] .ar-text h2, body[class*="p-"] .ar-text h3, .ar-verw b { text-wrap: balance; }
.ar-text :is(h2, h3, p, li, dd) { max-width: 100%; }
.ar-text > section > h2 + p, .ar-text > section > h2 + .ar-pruef { margin-top: 0; }
.ar-text ul + h3, .ar-text p + h3 { margin-top: 28px; }

/* Ruhiger Kopf ohne Foto (doppelte Rechnungen): flächiges Tintenfeld, eine feine Messinglinie */
.ar-ruhig .ar-kopf { background: var(--k-ink); border-bottom: 1px solid rgba(201, 162, 75, .5); }
.ar-ruhig .ar-kopf::after { display: none; }
@media (min-width: 1021px) { .ar-ruhig .ar-kopf .kw { padding-top: 24px; padding-bottom: clamp(56px, 6vw, 88px); } }

/* Einblenden der Abschnitte: nur transform und opacity, JS setzt die Klassen */
.ar-text > section.ar-rv { opacity: 0; transform: translateY(14px); transition: opacity .5s var(--ease), transform .5s var(--ease); }
.ar-text > section.ar-rv.ar-ein { opacity: 1; transform: none; }
.ar-faq summary, .ar-verw a, .ar-tocm summary { -webkit-tap-highlight-color: transparent; }
.ar-faq summary:active, .ar-tocm summary:active { background: var(--k-alt); }
.ar-verw a:active { background: var(--k-alt); }
.ar-btns .kb:active, .ar-tocd-dl:active { transform: scale(.98); }
@media (hover: none) { body[class*="p-"] .ar .ar-verw a:hover { padding-left: 2px; color: var(--k-ink); } }

@media (min-width: 641px) and (max-width: 1020px) {
  .ar-kopf-in { max-width: var(--ar-m); width: 100%; margin-inline: auto; }
}
@media (max-width: 1020px) {
  .ar-raster { padding-top: 32px; }
  .ar-tocm { margin-bottom: 32px; }
  .ar-tocm summary { min-height: 56px; }
}
@media (max-width: 640px) {
  .ar-kopf .kw { padding-top: 6px; padding-bottom: 32px; }
  .ar-krumen { margin-bottom: 18px; row-gap: 0; }
  body[class*="p-"] .ar-kopf h1 { font-size: clamp(27px, 8.2vw, 33px); line-height: 1.13; letter-spacing: -.028em; max-width: none; }
  body[class*="p-"] .ar-kopf .ar-lead { font-size: 17px; line-height: 1.58; margin: 16px 0 22px; }
  .ar-btns { gap: 10px; }
  .ar-meta { margin-top: 20px; gap: 2px 16px; font-size: 14px; }
  .ar-meta span + span::before { margin-right: 16px; }
  .ar-raster { padding-top: 24px; padding-bottom: 56px; }
  .ar-text p, .ar-text li, .ar-text dd { font-size: 17px; line-height: 1.66; }
  .ar-vor { font-size: 17.5px; line-height: 1.58; }
  .ar-text .ar-kurz p:not(.ar-kurz-t) { font-size: 17px; line-height: 1.6; }
  .ar-text > section { margin-top: 44px; }
  .ar-text > .ar-kurz + section { margin-top: 44px; }
  body[class*="p-"] .ar-text h2 { font-size: 24px; line-height: 1.2; margin-bottom: 16px; }
  body[class*="p-"] .ar-text h3 { font-size: 18px; margin-bottom: 8px; }
  .ar-liste li { padding-bottom: 12px; }
  .ar-pp { padding: 20px 0 8px; }
  .ar-text .ar-pp dd { font-size: 16.5px; line-height: 1.62; }
  .ar-tab tr { padding: 20px 0 8px; }
  .ar-tab tbody th { font-size: 18px; }
  .ar-check li { padding: 14px 0 14px 34px; }
  .ar-mappe-k { flex-direction: column; gap: 2px; padding: 14px 18px; }
  .ar-mappe-t { padding: 16px 18px 4px; }
  .ar-mappe ul { padding: 0 18px 2px; }
  .ar-mappe figcaption { padding: 12px 18px 14px; }
  .ar-dok { padding: 18px; gap: 14px; }
  .ar-verw a { padding: 16px 2px; }
  .ar-faq summary { font-size: 17px; padding-right: 36px; }
  .ar-ende { padding: 48px 0 56px; }
  .ar-ende p { font-size: 17px; }
}
@media (max-width: 359px) {
  .ar-kopf .kw, .ar-raster.kw { padding-inline: 16px; }
  .ar-text p, .ar-text li, .ar-text dd { font-size: 16.5px; }
}
@media (prefers-reduced-motion: reduce) {
  .ar-text > section.ar-rv { opacity: 1; transform: none; transition: none; }
  .ar-btns .kb:active, .ar-tocd-dl:active { transform: none; }
}