/* ════════════════════════════════════════════════════════════════════
   STARTSEITE (index.html) — „Hauptbuch & Beleg“, warme Variante
   Tinte-schwarze Kopfleiste, Papier, Bilder aus /img/landing.
   Struktur über Linien und Weißraum, keine weichen Schatten, keine
   runden Karten. Rot ist der Handlungs-Akzent (Buttons, Kicker, Pfeile).
   Footer: /css/site-footer-papier.css.
   ════════════════════════════════════════════════════════════════════ */

.start-body {
  --s-ink: #1c1a17;
  --s-ink-soft: #3d3a33;
  --s-muted: #6b665a;
  --s-paper: #f4efe4;
  --s-card: #fbf8f1;
  --s-line: #d9d0bf;
  --s-rot: #a8432c;
  --s-rot-dunkel: #8c3622;
  --s-nav: #1c1a17;
  --s-nav-text: #e9e2d3;
  --s-focus: rgba(168, 67, 44, 0.55);
  --s-serif: "Lora", "Source Serif 4", Georgia, serif;
  --s-mono: "JetBrains Mono", "IBM Plex Mono", monospace;
  --s-breite: 1180px;

  margin: 0;
  background-color: var(--s-paper);
  background-image:
    linear-gradient(rgba(120, 110, 85, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 110, 85, 0.07) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--s-ink);
  font-family: var(--s-serif);
  line-height: 1.6;
  overflow-x: clip;
}

.start-body a { color: inherit; }

.start-body :focus-visible {
  outline: 3px solid var(--s-focus);
  outline-offset: 2px;
}

.start-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.start-skip {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 1000;
  padding: 10px 16px;
  background: var(--s-ink);
  color: #fff;
  font-family: var(--s-mono);
  font-size: 12px;
}

.start-skip:focus { top: 8px; }

.start-kicker {
  margin: 0 0 10px;
  color: var(--s-rot);
  font-family: var(--s-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ── Buttons ─────────────────────────────────────────────────────── */

.start-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid var(--s-ink);
  border-radius: 2px;
  background: transparent;
  color: var(--s-ink);
  font-family: var(--s-serif);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.start-btn:hover { background: var(--s-ink); color: var(--s-card); }

.start-btn--primaer {
  border-color: var(--s-rot);
  background: var(--s-rot);
  color: #fff;
}

.start-btn--primaer:hover { border-color: var(--s-rot-dunkel); background: var(--s-rot-dunkel); color: #fff; }

.start-btn--hell { border-color: var(--s-nav-text); color: var(--s-nav-text); }
.start-btn--hell:hover { background: var(--s-nav-text); color: var(--s-ink); }

.start-btn:disabled { opacity: 0.7; cursor: wait; }

/* ── Kopfleiste ──────────────────────────────────────────────────── */

.start-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 64px;
  padding: 0 max(24px, calc((100vw - 1320px) / 2));
  background: var(--s-nav);
  color: var(--s-nav-text);
}

.start-nav-logo { display: inline-flex; flex-shrink: 0; }
.start-nav-logo img { width: 210px; height: auto; }

.start-nav-menue {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 auto;
}

.start-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 12px;
  border-bottom: 2px solid transparent;
  color: var(--s-nav-text);
  font-family: var(--s-serif);
  font-size: 0.92rem;
  text-decoration: none;
  list-style: none;
  cursor: pointer;
}

.start-nav-link::-webkit-details-marker { display: none; }
.start-nav-link:hover { color: #fff; }

.start-nav-link[aria-current="page"] { border-bottom-color: var(--s-rot); color: #fff; }

summary.start-nav-link::after {
  content: "";
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
}

.start-nav-gruppe { position: relative; }
.start-nav-gruppe[open] > summary { color: #fff; }

.start-nav-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  display: grid;
  min-width: 240px;
  padding: 6px 0;
  border: 1px solid var(--s-ink);
  background: var(--s-card);
  box-shadow: 3px 3px 0 var(--s-ink);
}

.start-nav-dropdown a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
  padding: 0 16px;
  color: var(--s-ink);
  font-size: 0.95rem;
  text-decoration: none;
}

.start-nav-dropdown a:hover { background: rgba(168, 67, 44, 0.08); color: var(--s-rot); }

.start-nav-marke {
  padding: 1px 6px;
  border: 1px solid currentColor;
  font-family: var(--s-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.start-nav-rechts {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.start-nav-expert {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 14px;
  border: 1px solid var(--s-nav-text);
  border-radius: 999px;
  outline-offset: 6px;
  color: var(--s-nav-text);
  font-family: var(--s-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-decoration: none;
  text-transform: uppercase;
}

.start-nav-expert::before,
.start-nav-expert::after { content: "·"; padding: 0 6px; }

.start-nav-expert:hover { background: var(--s-nav-text); color: var(--s-ink); }

.start-nav-login {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: var(--s-nav-text);
}

.start-nav-login svg {
  width: 34px;
  height: 34px;
  padding: 5px;
  border-radius: 50%;
  background: var(--s-nav-text);
  color: var(--s-ink);
}

.start-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  margin-left: auto;
  padding: 0 12px;
  border: 1px solid #4a453b;
  background: transparent;
  color: var(--s-nav-text);
  font-family: var(--s-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
}

.start-nav-toggle-bars,
.start-nav-toggle-bars::before,
.start-nav-toggle-bars::after {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
}

.start-nav-toggle-bars { position: relative; }
.start-nav-toggle-bars::before,
.start-nav-toggle-bars::after { content: ""; position: absolute; left: 0; }
.start-nav-toggle-bars::before { top: -6px; }
.start-nav-toggle-bars::after { top: 6px; }

/* ── Hero ────────────────────────────────────────────────────────── */

.start-main { display: block; }

.start-hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: min(620px, calc(100vh - 64px));
  padding: 56px max(24px, calc((100vw - var(--s-breite)) / 2));
  background: var(--s-paper);
  overflow: hidden;
  isolation: isolate;
}

.start-hero-bild {
  position: absolute;
  inset: 0 0 0 auto;
  z-index: -1;
  width: 68%;
}

.start-hero-bild img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% 50%;
}

/* Das Foto läuft nach links weich ins Papier aus, damit der Text auf
   ruhigem Grund steht. Die einzige Verlaufsfläche der Seite: Sie ist Teil
   des Bildes, keine Deko. */
.start-hero-bild::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--s-paper) 0%, rgba(244, 239, 228, 0.85) 22%, rgba(244, 239, 228, 0) 55%);
}

.start-hero-inhalt { width: min(560px, 100%); }

/* Zwei feste Zeilen wie im Entwurf; schmaler darf jede Zeile umbrechen. */
.start-hero h1 span { display: block; }

.start-hero h1 {
  margin: 0 0 18px;
  font-family: var(--s-serif);
  font-size: clamp(2.1rem, 3.9vw, 3rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.start-hero-text {
  max-width: 480px;
  margin: 0 0 28px;
  color: var(--s-ink-soft);
  font-size: 1.12rem;
  line-height: 1.55;
}

.start-login {
  max-width: 480px;
  display: grid;
  gap: 12px;
}

.start-feld {
  position: relative;
  display: block;
}

.start-feld-icon {
  position: absolute;
  top: 50%;
  left: 14px;
  width: 18px;
  height: 18px;
  color: var(--s-muted);
  transform: translateY(-50%);
  pointer-events: none;
}

.start-feld input {
  width: 100%;
  min-height: 50px;
  padding: 0 48px 0 44px;
  border: 1px solid var(--s-line);
  border-radius: 2px;
  background: rgba(251, 248, 241, 0.92);
  color: var(--s-ink);
  font-family: var(--s-serif);
  font-size: 1rem;
}

.start-feld input::placeholder { color: var(--s-muted); }
.start-feld input:focus { border-color: var(--s-ink); outline: none; box-shadow: 0 0 0 3px var(--s-focus); }

.start-feld-auge {
  position: absolute;
  top: 50%;
  right: 4px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--s-muted);
  transform: translateY(-50%);
  cursor: pointer;
}

.start-feld-auge svg { width: 20px; height: 20px; }
.start-feld-auge[aria-pressed="true"] { color: var(--s-ink); }

.start-login .start-btn { width: 100%; min-height: 50px; margin-top: 4px; }

.start-login-meldung {
  min-height: 0;
  margin: 0;
  color: var(--s-rot);
  font-size: 0.95rem;
}

.start-login-meldung:empty { display: none; }

.start-login-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 18px;
  margin: 2px 0 0;
  font-size: 0.95rem;
}

.start-login-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--s-rot);
  text-underline-offset: 3px;
}

.start-login-links .start-login-vergessen { color: var(--s-muted); }

.start-vertrauen {
  max-width: 480px;
  margin: 22px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--s-line);
  color: var(--s-ink-soft);
  font-family: var(--s-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

/* ── Direkt ausprobieren ─────────────────────────────────────────── */

.start-probieren {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr);
  align-items: center;
  gap: 32px;
  width: min(var(--s-breite), calc(100% - 48px));
  margin: 0 auto;
  padding: 34px 0;
  border-top: 1px solid var(--s-line);
}

.start-probieren-kopf h2 {
  margin: 0 0 6px;
  font-size: clamp(1.45rem, 2.4vw, 1.8rem);
  font-weight: 500;
  line-height: 1.2;
}

.start-probieren-kopf p:last-child { margin: 0; color: var(--s-muted); }

.start-probieren-liste {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.start-probieren-liste li { border-left: 1px solid var(--s-line); }

.start-probieren-liste a {
  display: grid;
  gap: 8px;
  min-height: 112px;
  padding: 8px 20px;
  font-size: 0.98rem;
  text-decoration: none;
}

.start-probieren-liste svg { width: 24px; height: 24px; color: var(--s-rot); }

.start-pfeil { color: var(--s-rot); font-size: 1.15rem; transition: transform 0.15s ease; }

.start-probieren-liste a:hover span:not(.start-pfeil) { text-decoration: underline; text-underline-offset: 4px; }
.start-probieren-liste a:hover .start-pfeil { transform: translateX(4px); }

/* ── Karten mit Bild ─────────────────────────────────────────────── */

.start-karten {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  width: min(var(--s-breite), calc(100% - 48px));
  margin: 8px auto 0;
}

.start-karte {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--s-line);
  border-radius: 2px;
  background: var(--s-card);
  text-decoration: none;
  transition: border-color 0.15s ease;
}

.start-karte:hover { border-color: var(--s-ink); }

.start-karte picture { display: block; aspect-ratio: 760 / 470; overflow: hidden; border-bottom: 1px solid var(--s-line); }
.start-karte img { width: 100%; height: 100%; object-fit: cover; }

.start-karte-text {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 18px 20px 20px;
}

.start-karte .start-kicker { font-size: 0.66rem; margin-bottom: 8px; }

.start-karte h3 {
  margin: 0 0 10px;
  font-size: 1.32rem;
  font-weight: 500;
  line-height: 1.22;
}

.start-karte-text > p:not(.start-kicker) {
  margin: 0 0 16px;
  color: var(--s-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.start-mehr {
  display: inline-flex;
  gap: 8px;
  margin-top: auto;
  color: var(--s-rot);
  font-size: 0.95rem;
}

.start-karte:hover .start-mehr { text-decoration: underline; text-underline-offset: 4px; }

/* ── Zahlenleiste ────────────────────────────────────────────────── */

.start-zahlen {
  width: min(var(--s-breite), calc(100% - 48px));
  margin: 56px auto 0;
}

.start-zahlen dl {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin: 0;
  border-top: 2px solid var(--s-ink);
  border-bottom: 1px solid var(--s-ink);
}

.start-zahlen dl > div {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
  gap: 4px;
  padding: 18px 18px 16px;
  border-left: 1px solid var(--s-line);
}

.start-zahlen dl > div:first-child { border-left: 0; padding-left: 0; }

.start-zahlen dt {
  color: var(--s-muted);
  font-family: var(--s-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.start-zahlen dd {
  margin: 0;
  font-family: var(--s-mono);
  font-size: 1.75rem;
  font-weight: 500;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

/* ── Abschnitte ──────────────────────────────────────────────────── */

.start-abschnitt {
  width: min(var(--s-breite), calc(100% - 48px));
  margin: 0 auto;
  padding: 72px 0 0;
  scroll-margin-top: 72px;
}

.start-abschnitt-kopf {
  max-width: 720px;
  margin-bottom: 28px;
}

.start-abschnitt-kopf h2 {
  margin: 0 0 12px;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 500;
  line-height: 1.18;
  text-wrap: balance;
}

.start-abschnitt-kopf p:not(.start-kicker) {
  margin: 0;
  color: var(--s-ink-soft);
  font-size: 1.05rem;
}

.start-abschnitt h3 { font-weight: 500; }

/* Lernweg: Semester als nummerierte Zeilen eines Kontoblatts. */
.start-semester {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--s-ink);
}

.start-semester li {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--s-line);
}

.start-semester-nr {
  color: var(--s-rot);
  font-family: var(--s-mono);
  font-size: 1.6rem;
  font-weight: 500;
  line-height: 1.2;
}

.start-semester-nr::before {
  content: "Semester";
  display: block;
  color: var(--s-muted);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.start-semester h3 { margin: 0 0 4px; font-size: 1.25rem; }
.start-semester p { margin: 0; color: var(--s-ink-soft); }

.start-abschnitt-fuss {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
  padding: 22px 0 0;
}

.start-abschnitt-fuss p { margin: 0; font-size: 1.05rem; }

/* Finanzmathematik: Linkliste in zwei Spalten. */
.start-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--s-ink);
}

.start-links li { border-bottom: 1px solid var(--s-line); }
.start-links li:nth-child(odd) { border-right: 1px solid var(--s-line); }

.start-links a {
  display: grid;
  gap: 6px;
  height: 100%;
  padding: 20px 22px 22px;
  text-decoration: none;
}

.start-links li:nth-child(odd) a { padding-left: 0; }

.start-links strong { font-size: 1.15rem; font-weight: 500; }
.start-links strong::after { content: " →"; color: var(--s-rot); }
.start-links span { color: var(--s-muted); font-size: 0.97rem; }
.start-links a:hover strong { color: var(--s-rot); }

/* So lernst du: drei Schritte. */
.start-schritte {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--s-ink);
}

.start-schritte li {
  padding: 22px 24px 8px;
  border-left: 1px solid var(--s-line);
}

.start-schritte li:first-child { padding-left: 0; border-left: 0; }

.start-schritt-nr {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 12px;
  background: var(--s-ink);
  color: var(--s-card);
  font-family: var(--s-mono);
  font-size: 0.9rem;
}

.start-schritte h3 { margin: 0 0 6px; font-size: 1.2rem; }
.start-schritte p { margin: 0; color: var(--s-ink-soft); }

/* Kostenlos und Expert. */
.start-plaene {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.start-plan {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 28px 28px;
  border: 1px solid var(--s-line);
  border-top: 2px solid var(--s-ink);
  background: var(--s-card);
}

.start-plan--expert { border-top-color: var(--s-rot); }

.start-plan-name {
  margin: 0;
  color: var(--s-muted);
  font-family: var(--s-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.start-plan--expert .start-plan-name { color: var(--s-rot); }

.start-plan-preis {
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 3px double var(--s-ink);
  font-family: var(--s-mono);
  font-size: 2rem;
  font-weight: 500;
  line-height: 1.1;
}

.start-plan-preis small {
  display: block;
  margin-top: 4px;
  color: var(--s-muted);
  font-size: 0.78rem;
  font-weight: 400;
}

.start-plan ul {
  display: grid;
  gap: 8px;
  margin: 4px 0 6px;
  padding-left: 18px;
  list-style: square;
}

.start-plan li::marker { color: var(--s-rot); }

.start-plan-hinweis { margin: 0; color: var(--s-muted); font-size: 0.95rem; }
.start-plan .start-btn { align-self: flex-start; margin-top: auto; }

/* Zielgruppen. */
.start-gruppen {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--s-ink);
}

.start-gruppen li {
  display: flex;
  flex-direction: column;
  padding: 22px 22px 6px;
  border-left: 1px solid var(--s-line);
}

.start-gruppen li:first-child { padding-left: 0; border-left: 0; }
.start-gruppen h3 { margin: 0 0 8px; font-size: 1.15rem; line-height: 1.3; }
.start-gruppen p { margin: 0 0 14px; color: var(--s-ink-soft); font-size: 0.97rem; }

.start-gruppen a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  margin-top: auto;
  color: var(--s-rot);
  text-underline-offset: 4px;
}

/* Zuletzt neu. */
.start-neu {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--s-ink);
}

.start-neu li {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--s-line);
}

.start-neu time {
  padding-top: 3px;
  color: var(--s-muted);
  font-family: var(--s-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.start-neu p { margin: 0; }
.start-neu strong { font-weight: 600; }

/* FAQ. */
.start-faq { border-top: 2px solid var(--s-ink); }

.start-faq details { border-bottom: 1px solid var(--s-line); }

.start-faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 56px;
  padding: 10px 0;
  font-size: 1.1rem;
  cursor: pointer;
  list-style: none;
}

.start-faq summary::-webkit-details-marker { display: none; }

.start-faq summary::after {
  content: "+";
  flex-shrink: 0;
  color: var(--s-rot);
  font-family: var(--s-mono);
  font-size: 1.3rem;
}

.start-faq details[open] summary::after { content: "−"; }

.start-faq p { max-width: 760px; margin: 0 0 18px; color: var(--s-ink-soft); }
.start-faq a { color: var(--s-rot); text-underline-offset: 3px; }

.start-geprueft {
  margin: 18px 0 0;
  color: var(--s-muted);
  font-family: var(--s-mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
}

.start-geprueft a { color: inherit; }

/* Schluss: dunkles Band wie die Kopfleiste. */
.start-schluss {
  width: min(var(--s-breite), calc(100% - 48px));
  margin: 80px auto 0;
  padding: 48px 48px 52px;
  background: var(--s-nav);
  color: var(--s-nav-text);
}

.start-schluss h2 {
  margin: 0 0 10px;
  color: #fff;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 500;
  line-height: 1.2;
}

.start-schluss p { margin: 0 0 24px; color: #cfc6b4; font-size: 1.05rem; }

.start-schluss-aktionen { display: flex; flex-wrap: wrap; gap: 12px; }

/* ── Responsiv ───────────────────────────────────────────────────── */

@media (max-width: 1140px) {
  .start-nav { gap: 12px; }
  .start-nav-toggle { display: inline-flex; }

  .start-nav-menue {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 8px max(24px, calc((100vw - 1320px) / 2)) 16px;
    border-top: 1px solid #4a453b;
    background: var(--s-nav);
  }

  .start-nav-menue.is-offen { display: flex; }

  .start-nav-gruppe { width: 100%; }

  .start-nav-link {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid #36322b;
  }

  .start-nav-link[aria-current="page"] { border-bottom-color: #36322b; box-shadow: inset 3px 0 0 var(--s-rot); }

  .start-nav-dropdown {
    position: static;
    min-width: 0;
    margin: 4px 0 8px;
    box-shadow: none;
  }

  .start-karten { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .start-zahlen dl { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .start-zahlen dl > div:nth-child(3n + 1) { border-left: 0; padding-left: 0; }
  .start-zahlen dl > div:nth-child(n + 4) { border-top: 1px solid var(--s-line); }
  .start-gruppen { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .start-gruppen li:nth-child(odd) { padding-left: 0; border-left: 0; }
  .start-gruppen li:nth-child(n + 3) { border-top: 1px solid var(--s-line); }
}

@media (max-width: 900px) {
  .start-hero {
    flex-direction: column;
    align-items: stretch;
    min-height: 0;
    padding: 0 0 40px;
  }

  .start-hero-bild {
    position: relative;
    inset: auto;
    width: 100%;
    height: 240px;
  }

  .start-hero-bild::after {
    background: linear-gradient(180deg, rgba(244, 239, 228, 0) 55%, var(--s-paper) 100%);
  }

  .start-hero-inhalt {
    width: min(560px, calc(100% - 48px));
    margin: -24px auto 0;
  }

  .start-probieren { grid-template-columns: 1fr; gap: 20px; }
  .start-probieren-liste li:first-child { border-left: 0; }
  .start-probieren-liste li a { padding-inline: 16px; }
  .start-probieren-liste li:first-child a { padding-left: 0; }
}

@media (max-width: 760px) {
  .start-nav { padding: 0 16px; min-height: 58px; }
  .start-nav-logo img { width: 168px; }
  .start-nav-expert { display: none; }
  .start-nav-menue { padding: 8px 16px 16px; }
  .start-abschnitt { scroll-margin-top: 66px; }

  .start-hero-inhalt,
  .start-probieren,
  .start-karten,
  .start-zahlen,
  .start-abschnitt,
  .start-schluss { width: calc(100% - 32px); }

  .start-hero-bild { height: 190px; }

  .start-probieren-liste { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .start-probieren-liste li { border-left: 0; border-top: 1px solid var(--s-line); }
  .start-probieren-liste li:nth-child(even) { border-left: 1px solid var(--s-line); }
  .start-probieren-liste li a,
  .start-probieren-liste li:first-child a { min-height: 96px; padding: 14px 12px; }

  .start-karten { grid-template-columns: 1fr; }

  .start-zahlen dl { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .start-zahlen dl > div,
  .start-zahlen dl > div:nth-child(3n + 1) { border-left: 1px solid var(--s-line); padding: 14px 12px; }
  .start-zahlen dl > div:nth-child(odd) { border-left: 0; padding-left: 0; }
  .start-zahlen dl > div:nth-child(n + 3) { border-top: 1px solid var(--s-line); }
  .start-zahlen dd { font-size: 1.4rem; }

  .start-abschnitt { padding-top: 56px; }

  .start-semester li { grid-template-columns: 64px minmax(0, 1fr); gap: 14px; }
  .start-semester-nr { font-size: 1.3rem; }

  .start-links { grid-template-columns: 1fr; }
  .start-links li:nth-child(odd) { border-right: 0; }
  .start-links a,
  .start-links li:nth-child(odd) a { padding: 18px 0; }

  .start-schritte { grid-template-columns: 1fr; }
  .start-schritte li,
  .start-schritte li:first-child { padding: 20px 0 14px; border-left: 0; border-bottom: 1px solid var(--s-line); }

  .start-plaene { grid-template-columns: 1fr; }
  .start-plan { padding: 22px 18px 24px; }
  .start-plan .start-btn { align-self: stretch; }

  .start-gruppen { grid-template-columns: 1fr; }
  .start-gruppen li,
  .start-gruppen li:nth-child(odd) { padding: 20px 0 4px; border-left: 0; }
  .start-gruppen li + li { border-top: 1px solid var(--s-line); }

  .start-neu li { grid-template-columns: 1fr; gap: 4px; }

  .start-schluss { padding: 34px 22px 38px; }
  .start-schluss .start-btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .start-btn,
  .start-karte,
  .start-pfeil { transition: none; }
}

/* ════════════════════════════════════════════════════════════════════
   REGISTRIERUNG (register.html) — gleicher Hero wie die Startseite,
   das Formular hat sichtbare Feldnamen und Hinweise.
   ════════════════════════════════════════════════════════════════════ */

.start-hero--formular { align-items: flex-start; }

.start-registrierung { gap: 10px; }

.start-feld--label { display: grid; gap: 6px; }

.start-feld-name {
  color: var(--s-ink-soft);
  font-family: var(--s-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.start-feld-zeile { position: relative; display: block; }

.start-feld-hinweis {
  margin: -2px 0 4px;
  color: var(--s-muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.start-feld-hinweis--warnung { color: var(--s-rot); }

.start-optional {
  border-top: 1px solid var(--s-line);
  border-bottom: 1px solid var(--s-line);
}

.start-optional summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  font-size: 0.98rem;
  cursor: pointer;
  list-style: none;
}

.start-optional summary::-webkit-details-marker { display: none; }

.start-optional summary::after {
  content: "+";
  color: var(--s-rot);
  font-family: var(--s-mono);
  font-size: 1.2rem;
}

.start-optional[open] summary::after { content: "−"; }

.start-check {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 2px 0 12px;
  font-size: 0.95rem;
  line-height: 1.5;
  cursor: pointer;
}

.start-check input {
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  accent-color: var(--s-rot);
}

.start-optional .start-feld-hinweis { margin: 0 0 12px; }

.start-login-meldung[data-status="erfolg"] { color: #1f7a4d; }

.start-registrierung .start-login-links { color: var(--s-muted); }

/* Vorteile: derselbe Streifen wie „Direkt ausprobieren“, aber ohne Links. */
.start-vorteile .start-probieren-liste li > div {
  display: grid;
  align-content: start;
  gap: 8px;
  min-height: 96px;
  padding: 8px 20px;
  font-size: 0.98rem;
}

.start-vorteile .start-probieren-liste svg { width: 24px; height: 24px; color: var(--s-rot); }

.start-body--registrierung .start-vorteile { margin-bottom: 24px; }

@media (max-width: 900px) {
  .start-vorteile .start-probieren-liste li > div { padding-inline: 16px; }
  .start-vorteile .start-probieren-liste li:first-child > div { padding-left: 0; }
}

@media (max-width: 760px) {
  .start-vorteile .start-probieren-liste li > div,
  .start-vorteile .start-probieren-liste li:first-child > div { min-height: 88px; padding: 14px 12px; }
}

/* ════════════════════════════════════════════════════════════════════
   LOGIN (login.html) — Hero und Formular wie die Registrierung, dazu
   „Passwort vergessen?“ als Textknopf und das Rücksetz-Fenster.
   ════════════════════════════════════════════════════════════════════ */

.start-textknopf {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--s-muted);
  font-family: var(--s-serif);
  font-size: 0.95rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

.start-textknopf:hover { color: var(--s-ink); }

.start-login-links > span { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 0 6px; }

/* Lernstand-Streifen: Zellen mit Titel und kurzem Text statt einer Zeile. */
.start-vorteile--text .start-probieren-liste li > div { gap: 6px; }
.start-vorteile--text strong { font-weight: 500; font-size: 1.02rem; }
.start-vorteile--text .start-probieren-liste span { color: var(--s-muted); font-size: 0.92rem; line-height: 1.5; }
.start-vorteile--text .start-probieren-liste { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.start-body--login .start-vorteile { margin-bottom: 24px; }

.start-modal {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(28, 26, 23, 0.6);
}

.start-modal-karte {
  position: relative;
  display: grid;
  gap: 10px;
  width: min(480px, 100%);
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  padding: 28px 26px 24px;
  border: 1px solid var(--s-ink);
  border-top: 2px solid var(--s-rot);
  background: var(--s-card);
  box-shadow: 4px 4px 0 var(--s-ink);
}

.start-modal-karte h2 { margin: 0; font-size: 1.4rem; font-weight: 500; line-height: 1.25; }
.start-modal-karte > p:not(.start-kicker) { margin: 0 0 6px; color: var(--s-ink-soft); font-size: 0.97rem; }
.start-modal-karte .start-kicker { margin: 0; }

.start-modal-zu {
  position: absolute;
  top: 8px;
  right: 8px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--s-ink);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.start-modal-zu:hover { color: var(--s-rot); }

.start-modal-meldung { color: var(--s-ink-soft); }

@media (max-width: 760px) {
  .start-vorteile--text .start-probieren-liste { grid-template-columns: 1fr; }
  .start-vorteile--text .start-probieren-liste li,
  .start-vorteile--text .start-probieren-liste li:nth-child(even) { border-left: 0; }
  .start-vorteile--text .start-probieren-liste li > div,
  .start-vorteile--text .start-probieren-liste li:first-child > div { min-height: 0; padding: 16px 0; }
  .start-modal-karte { padding: 24px 18px 20px; }
}