:root {
  --bg: #0f1420;
  --bg2: #131a2a;
  --card: #1b2233;
  --card-hi: #232c42;
  --text: #eef2fb;
  --muted: #9aa6c2;
  --line: #2a3450;
  --accent: #6c8cff;
  --accent2: #9a6cff;
  --radius: 18px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(1200px 600px at 50% -10%, #1a2340 0, transparent 60%), var(--bg);
  background-color: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 28px 16px 48px;
}

.head { text-align: center; margin: 8px 0 22px; }

.head h1 {
  font-size: 26px;
  line-height: 1.25;
  margin: 0 0 6px;
  font-weight: 800;
  letter-spacing: .2px;
}

.sub {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

/* Startseite: 2-Spalten-Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 16px;
  background: linear-gradient(180deg, var(--card-hi), var(--card));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  font-size: 17px;
  font-weight: 700;
  min-height: 64px;
  transition: transform .08s ease, border-color .15s ease, background .15s ease;
}

.btn:hover { border-color: var(--accent); }
.btn:active { transform: scale(.98); }

.btn .ic { font-size: 24px; line-height: 1; flex: 0 0 auto; }

.btn.full { grid-column: 1 / -1; justify-content: center; }

.btn.help {
  background: linear-gradient(180deg, #2a2140, #1d1930);
  border-color: #3a2f5c;
}

/* Guide-Seite */
.back {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}
.back:hover { color: var(--text); }
.back.bottom { margin-top: 26px; }

.guide-head { text-align: left; }
.guide-head h1 { font-size: 24px; }

.video { margin: 6px 0 20px; }
.video-ratio {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
  border: 1px solid var(--line);
}
.video-ratio iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 18px;
}
.card h2 { margin: 0 0 12px; font-size: 18px; }

.card ol { margin: 0; padding-left: 22px; }
.card ol li { margin: 0 0 12px; line-height: 1.5; }
.card ol li:last-child { margin-bottom: 0; }

.note {
  margin: 14px 0 0;
  padding: 12px 14px;
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.btn.dl {
  justify-content: center;
  background: linear-gradient(180deg, var(--accent), var(--accent2));
  border: none;
  font-size: 18px;
}
.btn.dl:hover { filter: brightness(1.06); }

.code {
  text-align: center;
  color: var(--muted);
  font-size: 15px;
  margin: 12px 0 0;
}

/* Handys: 2 Spalten beibehalten (wie im Screenshot), nur enger */
@media (max-width: 460px) {
  .grid { gap: 10px; }
  .btn { padding: 15px 12px; font-size: 15px; min-height: 58px; gap: 9px; }
  .btn .ic { font-size: 21px; }
  .head h1 { font-size: 23px; }
}

/* Sehr schmale Geräte: eine Spalte */
@media (max-width: 340px) {
  .grid { grid-template-columns: 1fr; }
  .btn.full { grid-column: auto; }
}