/* RillWerk – schlichte Seiten, ohne externe Fonts, Skripte oder Tracking */
:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --accent: #0a66d8;
  --line: #e2e2e7;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card: #1c1c1e;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --accent: #4c9bff;
    --line: #2c2c2e;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header.site, footer.site, main { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header.site {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 18px; padding-bottom: 6px;
}
header.site .brand { font-weight: 700; font-size: 19px; color: var(--text); letter-spacing: -0.01em; }
header.site nav a { margin-left: 16px; font-size: 15px; }
main { padding-top: 12px; padding-bottom: 32px; }
h1 { font-size: 34px; line-height: 1.15; letter-spacing: -0.02em; margin: 18px 0 8px; }
h2 { font-size: 23px; letter-spacing: -0.01em; margin: 36px 0 10px; }
h3 { font-size: 18px; margin: 22px 0 6px; }
.lead { font-size: 20px; color: var(--muted); margin-top: 0; }
.card {
  background: var(--card); border-radius: 18px; padding: 20px 22px; margin: 16px 0;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.hero { display: flex; gap: 20px; align-items: center; margin-top: 20px; }
.hero img { width: 96px; height: 96px; border-radius: 22px; flex: none; }
.hero h1 { margin: 0 0 4px; }
.app-tile { display: flex; gap: 16px; align-items: center; color: var(--text); }
.app-tile:hover { text-decoration: none; }
.app-tile img { width: 64px; height: 64px; border-radius: 15px; flex: none; }
.app-tile strong { display: block; font-size: 19px; }
.app-tile span { color: var(--muted); }
ul.features { padding-left: 1.2em; }
ul.features li { margin: 6px 0; }
ol.steps li { margin: 8px 0; }
details { border-top: 1px solid var(--line); padding: 12px 0; }
details:last-child { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 8px 0 0; }
.muted { color: var(--muted); }
.placeholder { background: #fff3c4; color: #5c4400; padding: 0 4px; border-radius: 4px; }
@media (prefers-color-scheme: dark) { .placeholder { background: #4a3b00; color: #ffe08a; } }
.button {
  display: inline-block; background: var(--accent); color: #fff; font-weight: 600;
  padding: 10px 18px; border-radius: 12px;
}
.button:hover { text-decoration: none; opacity: 0.9; }
footer.site { color: var(--muted); font-size: 14px; padding-top: 12px; padding-bottom: 40px; border-top: 1px solid var(--line); }
footer.site a { margin-right: 14px; }
@media (max-width: 520px) {
  h1 { font-size: 28px; }
  .hero { flex-direction: column; align-items: flex-start; }
  .hero img { width: 80px; height: 80px; border-radius: 18px; }
}