:root {
  --accent: #4da3ff;
  --accent-2: #7fc4ff;
  --text: #eaf2ff;
  --text-dim: #9fb3d1;
  --glass: rgba(255,255,255,0.07);
  --glass-border: rgba(255,255,255,0.14);
  --radius: 20px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
  color: var(--text);
  background: #08142a;
  overflow-x: hidden;
}

/* CSS-basierter Himmel/Wolken-Look statt urheberrechtlich geschützter Bilder */
.sky {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: linear-gradient(180deg, #061029 0%, #0b2358 35%, #1b4a8c 65%, #cfe3f7 100%);
}
.cloud-layer {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse 60% 30% at 20% 80%, rgba(255,255,255,0.55) 0%, transparent 60%),
    radial-gradient(ellipse 50% 25% at 60% 90%, rgba(255,255,255,0.45) 0%, transparent 60%),
    radial-gradient(ellipse 70% 35% at 90% 85%, rgba(255,255,255,0.5) 0%, transparent 60%),
    radial-gradient(ellipse 40% 20% at 40% 70%, rgba(255,255,255,0.3) 0%, transparent 60%);
  filter: blur(2px);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: rgba(8, 20, 42, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--glass-border);
}
.brand { font-weight: 700; font-size: 18px; letter-spacing: -0.02em; }
.nav a { color: var(--text-dim); text-decoration: none; margin-left: 22px; font-size: 14px; }
.nav a:hover { color: var(--text); }

.glass {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.hero {
  display: flex;
  justify-content: center;
  padding: 90px 20px 60px;
}
.hero-card {
  max-width: 520px;
  width: 100%;
  padding: 44px 36px;
  text-align: center;
}
.hero-version {
  display: inline-block;
  padding: 5px 16px;
  border-radius: 999px;
  background: rgba(77,163,255,0.15);
  color: var(--accent-2);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .03em;
  margin-bottom: 18px;
}
.hero-version.small { font-size: 22px; padding: 8px 0; background: none; display: block; }

h1 { font-size: 28px; margin: 0 0 8px; letter-spacing: -0.02em; }
.dim { color: var(--text-dim); }

.platform-list {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.plat-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 18px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #2a7de0);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 14.5px;
  transition: filter .15s, transform .1s;
}
.plat-link:hover { filter: brightness(1.1); }
.plat-link:active { transform: scale(0.98); }
.plat-link .dim { color: rgba(255,255,255,0.75); font-weight: 400; }

.beta-toggle { margin-top: 22px; }
.beta-toggle a { color: var(--accent-2); text-decoration: none; font-size: 14px; }
.beta-toggle a:hover { text-decoration: underline; }

.section { display: flex; justify-content: center; padding: 20px 20px 60px; }
.section-card { max-width: 720px; width: 100%; padding: 32px; }
.section-card h2 { margin-top: 0; font-size: 19px; }

.beta-card { border-color: rgba(251,191,36,0.3); }
.badge-beta-tag {
  font-size: 11px;
  background: rgba(251,191,36,0.18);
  color: #fbbf24;
  padding: 3px 9px;
  border-radius: 999px;
  margin-left: 8px;
  vertical-align: middle;
}

.changelog-body p { margin: 8px 0; line-height: 1.5; }
.changelog-body ul { margin: 8px 0; padding-left: 22px; line-height: 1.5; }
.hint { font-size: 13px; color: var(--text-dim); margin-top: 16px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--glass-border); }
th { color: var(--text-dim); font-weight: 500; font-size: 11.5px; text-transform: uppercase; letter-spacing: .04em; }

.badge-tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}
.badge-stable { background: rgba(74,222,128,0.15); color: #4ade80; }
.badge-beta { background: rgba(251,191,36,0.15); color: #fbbf24; }

.footer { text-align: center; padding: 30px 0 50px; font-size: 13px; }