.ar-sek.ar-cases { padding: 76px 0; }
.ar-sek.ar-cases[id] { scroll-margin-top: var(--kopf-hoehe); }
.ar-case__marke { font-size: calc(12px * var(--f-klein)); font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }

/* A: Karten, Heute (Problem) oben, Danach (Loesung) unten. Radius wie Buttons. */
.ar-cases__raster { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.ar-cases__raster--vier { grid-template-columns: repeat(2, 1fr); }
.ar-case { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--white); transition: box-shadow .25s, transform .25s; }
.ar-case:hover { box-shadow: 0 18px 40px -28px rgba(28, 28, 29, .45); transform: translateY(-2px); }
.ar-case__heute { padding: 24px 28px 30px; background: var(--paper-2); }
.ar-sek--paper-2 .ar-case__heute { background: var(--paper); }
.ar-case__problem { margin-top: 8px; font-size: calc(20px * var(--f-lead)); font-weight: 600; line-height: 1.3; letter-spacing: -.02em; color: var(--anthracite); }
.ar-case__danach { position: relative; display: flex; flex-direction: column; flex: 1; padding: 30px 28px 26px; border-top: 1px solid var(--line); }
.ar-case__danach .ar-case__marke { color: var(--magenta); }
.ar-case__wende {
  position: absolute; left: 28px; top: -18px; width: 34px; height: 34px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--white); border: 1.5px solid var(--magenta); color: var(--magenta); font-size: calc(16px * var(--f-text)); font-weight: 700;
  transition: background-color .25s, color .25s, transform .25s;
}
.ar-case:hover .ar-case__wende { background: var(--magenta); color: #fff; transform: translateY(3px); }
.ar-case__titel { margin-top: 8px; font-size: calc(21px * var(--f-h3)); letter-spacing: -.025em; line-height: 1.2; }
.ar-case__text { margin-top: 10px; color: var(--text-2); font-size: calc(16px * var(--f-text)); }
.ar-case__link { margin-top: auto; padding-top: 18px; }
.body-wrapper .ar-case__link a { font-weight: 700; color: var(--magenta); font-size: calc(15.5px * var(--f-text)); display: inline-flex; gap: 8px; }
/* Gleiche Hoehe fuer "Heute" in einer Reihe, damit die Pfeile auf einer Linie liegen */
@supports (grid-template-rows: subgrid) {
  .ar-case { display: grid; grid-row: span 2; grid-template-rows: subgrid; row-gap: 0; }
}

/* Sprungziel aus stimmen-karten: Karte kurz hervorheben */
.ar-case[id], .ar-register[id], .ar-register__detail[id] { scroll-margin-top: calc(var(--kopf-hoehe) + 24px); }
.ar-case:target { animation: ar-case-ziel 2.4s ease-out; }
.ar-case:target .ar-case__heute { animation: ar-case-heute 2.4s ease-out; }
@keyframes ar-case-ziel { 0%, 30% { box-shadow: 0 0 0 3px var(--magenta); } 100% { box-shadow: 0 0 0 3px transparent; } }
@keyframes ar-case-heute { 0%, 30% { background: var(--rose); } }

/* B: Register, Problemliste links, Loesung rechts */
.ar-register { display: grid; grid-template-columns: 5fr 7fr; gap: 48px; align-items: start; margin-top: 44px; }
.ar-register:not(.is-js) { grid-template-columns: 1fr; }
.ar-register__liste { border-top: 1px solid var(--line); }
.ar-register__eintrag {
  position: relative; display: flex; justify-content: space-between; align-items: center; gap: 16px; width: 100%;
  padding: 16px 12px 16px 18px; margin: 0; border: 0; border-bottom: 1px solid var(--line); background: none; text-align: left; cursor: pointer;
  font-family: var(--font); font-size: calc(18px * var(--f-text)); font-weight: 600; line-height: 1.3; letter-spacing: -.01em; color: var(--muted);
  transition: color .2s, background-color .2s;
}
.ar-register__eintrag::before { content: ""; position: absolute; left: 0; top: 10px; bottom: 10px; width: 3px; border-radius: 2px; background: var(--magenta); transform: scaleY(0); transition: transform .25s; }
.ar-register__eintrag:hover { color: var(--ink); }
.ar-register__eintrag[aria-selected="true"] { color: var(--ink); }
.ar-register__eintrag[aria-selected="true"]::before { transform: scaleY(1); }
.ar-register__pfeil { color: var(--magenta); opacity: 0; transform: translateX(-6px); transition: opacity .2s, transform .2s; }
.ar-register__eintrag[aria-selected="true"] .ar-register__pfeil, .ar-register__eintrag:hover .ar-register__pfeil { opacity: 1; transform: none; }
.ar-register__inhalt { position: sticky; top: calc(var(--kopf-hoehe) + 24px); }
.ar-register__detail { padding: 40px 44px 38px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); }
.ar-register__detail + .ar-register__detail { margin-top: 20px; }
.ar-register.is-js .ar-register__detail + .ar-register__detail { margin-top: 0; }
.ar-register__detail:not([hidden]) { animation: ar-register-ein .35s ease; }
@keyframes ar-register-ein { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.ar-register__detail .ar-case__marke { color: var(--magenta); }
.ar-register__titel { margin-top: 14px; font-size: calc(clamp(26px, 2.8vw, 36px) * var(--f-h3)); letter-spacing: -.035em; line-height: 1.1; }
.ar-register__text { margin-top: 16px; font-size: calc(18px * var(--f-text)); font-weight: 300; line-height: 1.55; color: var(--text-2); max-width: 52ch; }
.ar-register__link { margin-top: 28px; white-space: normal; }

@media (max-width: 1080px) { .ar-cases__raster { grid-template-columns: 1fr 1fr; } }
@media (max-width: 860px) {
  .ar-sek.ar-cases { padding: 60px 0; }
  .ar-cases__raster { grid-template-columns: 1fr; gap: 16px; }
  .ar-register { grid-template-columns: 1fr; gap: 0; }
  .ar-register__inhalt { position: static; }
  .ar-register__detail { padding: 28px 22px 26px; }
}