/* Download-Seite – baut auf basis.css auf */

:root {
  --wrap: 960px;
}

/* Kopfbereich */
.kopf {
  position: relative;
  padding: clamp(64px, 10vw, 120px) 0 clamp(48px, 7vw, 80px);
  overflow: clip;
}
.kopf-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
@media (max-width: 820px) {
  .kopf-grid {
    grid-template-columns: 1fr;
  }
  .geraet {
    display: none;
  }
}
.kopf .mono {
  display: block;
  margin-bottom: 22px;
}
.kopf-grid > div {
  min-width: 0;
}
.kopf h1 {
  font-size: clamp(2rem, 7vw, 3.6rem);
}
@media (max-width: 560px) {
  .btn-gross {
    white-space: normal;
    height: auto;
    min-height: 56px;
    padding: 12px 20px;
    font-size: 1.25rem;
    line-height: 1.15;
  }
}
.lead {
  font-size: 1.2rem;
  margin: 22px 0 0;
  max-width: 520px;
}
.laden {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  margin-top: 36px;
}
.portable {
  color: var(--ink-2);
  font-size: 0.95rem;
}
.nur-pc {
  display: none;
  margin-top: 20px;
  padding: 14px 16px;
  border: 1px solid var(--line-2);
  color: var(--ink);
  font-size: 0.95rem;
}
@media (hover: none) and (pointer: coarse) {
  .nur-pc {
    display: block;
  }
}

/* Schwebendes Gerät wie auf der Startseite */
.geraet {
  position: relative;
  width: 100%;
  aspect-ratio: 1.3;
  perspective: 1200px;
}
.geraet::before {
  content: "";
  position: absolute;
  inset: -20%;
  background: radial-gradient(closest-side, rgba(255, 255, 255, 0.12), transparent);
  z-index: -1;
}
.box {
  position: absolute;
  inset: 12% 6%;
  border-radius: 22px;
  transform: rotateX(58deg) rotateZ(-32deg);
  transform-style: preserve-3d;
  background: linear-gradient(145deg, #2a2e33 0%, #16191d 45%, #0d0f12 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 50px 100px -30px rgba(0, 0, 0, 0.9),
    0 0 100px -20px rgba(255, 255, 255, 0.18);
  animation: schweben 7s ease-in-out infinite;
}
.box::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  transform: translateZ(-38px);
  background: #070809;
}
.box::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 40px;
  height: 40px;
  margin: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, #fff 0 18%, #e9eef2 36%, transparent 70%);
  animation: puls 3.2s ease-in-out infinite;
}
@keyframes schweben {
  50% {
    transform: rotateX(58deg) rotateZ(-32deg) translateZ(16px);
  }
}
@keyframes puls {
  50% {
    opacity: 0.45;
    transform: scale(0.85);
  }
}
@media (prefers-reduced-motion: reduce) {
  .box,
  .box::after {
    animation: none;
  }
}

/* Abschnitte */
section + section {
  padding-top: 0;
}
section {
  padding-bottom: 20px;
}
.karte h2 {
  margin: 0 0 14px;
  font-size: clamp(1.6rem, 3vw, 2rem);
  display: flex;
  align-items: center;
  gap: 12px;
}
.karte h2 svg {
  width: 26px;
  height: 26px;
  flex: none;
}
.karte p {
  margin: 0 0 12px;
}
.karte p:last-child {
  margin-bottom: 0;
}
.zwei {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 18px;
}
@media (max-width: 720px) {
  .zwei {
    grid-template-columns: 1fr;
  }
}

/* Schritte */
.schritte {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  counter-reset: s;
}
.schritte li {
  counter-increment: s;
  padding: 22px 20px 4px 0;
}
.schritte li + li {
  padding-left: 20px;
  border-left: 1px solid var(--line);
}
.schritte li::before {
  content: "0" counter(s);
  display: block;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  margin-bottom: 14px;
}
.schritte h3 {
  margin: 0 0 6px;
  font-weight: 400;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
  color: var(--ink);
}
.schritte p {
  margin: 0;
  font-size: 0.95rem;
}
@media (max-width: 820px) {
  .schritte {
    grid-template-columns: 1fr 1fr;
  }
  .schritte li:nth-child(3) {
    padding-left: 0;
    border-left: 0;
  }
}
@media (max-width: 480px) {
  .schritte {
    grid-template-columns: 1fr;
  }
  .schritte li,
  .schritte li + li {
    padding: 18px 0 4px;
    border-left: 0;
  }
  .schritte li + li {
    border-top: 1px solid var(--line);
  }
}

/* Warnung */
.warnung {
  border-color: rgba(255, 217, 160, 0.35);
}
.pfad {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 6px 0 16px;
  color: var(--ink-3);
}
.klick {
  padding: 6px 12px;
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink);
  font-size: 0.95rem;
}

/* Liste */
.liste {
  list-style: none;
  padding: 0;
  margin: 0;
}
.liste li {
  padding: 10px 0;
  border-top: 1px solid var(--line);
}
.liste li:first-child {
  border-top: 0;
  padding-top: 0;
}

/* Prüfsummen */
details {
  margin: 18px 0 12px;
  border-top: 1px solid var(--line);
}
summary {
  cursor: pointer;
  padding: 14px 0 6px;
  color: var(--ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
}
summary::-webkit-details-marker {
  display: none;
}
summary::after {
  content: "+";
  color: var(--ink-3);
  font-size: 1.3rem;
  line-height: 1;
  transition: transform 0.25s;
}
details[open] summary::after {
  transform: rotate(45deg);
}
.pruef {
  display: grid;
  gap: 12px;
  padding: 8px 0 4px;
  color: var(--ink-2);
  font-size: 0.9rem;
}
.pruef code {
  display: block;
  margin-top: 4px;
  padding: 8px 10px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--ink);
  word-break: break-all;
}
.hinweis {
  font-size: 0.9rem;
  color: var(--ink-3);
}

main {
  padding-bottom: clamp(56px, 8vw, 96px);
}