:root {
  color-scheme: light dark;
  --bg: #f7f2e9;
  --card: #fffdf9;
  --ink: #17212b;
  --muted: #6d6d72;
  --accent: #b9563f;
  --line: rgba(23, 33, 43, .09);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151311;
    --card: #211e1b;
    --ink: #f6f1e9;
    --muted: #aaa39a;
    --accent: #e17a60;
    --line: rgba(255, 255, 255, .1);
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 48px 20px;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.62;
}
main { max-width: 720px; margin: 0 auto; }
header { text-align: center; margin-bottom: 38px; }
h1 { margin: 12px 0 2px; letter-spacing: -.025em; }
.subtitle, footer { color: var(--muted); }
section {
  padding: 28px 30px;
  margin: 0 0 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  box-shadow: 0 8px 28px rgba(50, 28, 18, .06);
}
h2 { margin: 0 0 12px; font-size: 1.3rem; }
h3 { margin: 22px 0 6px; font-size: 1rem; }
p { margin: 0 0 12px; }
p:last-child { margin-bottom: 0; }
.tldr { color: var(--accent); font-weight: 700; font-size: 1.06rem; }
ul { padding-left: 22px; }
li { margin-bottom: 8px; }
a { color: var(--accent); }
footer { text-align: center; font-size: .86rem; margin: 30px 0 10px; }
.app-icon {
  position: relative;
  width: 82px;
  height: 82px;
  margin: 0 auto;
  border-radius: 19px;
  background: linear-gradient(135deg, #c86a50, #93402f);
  box-shadow: 0 8px 24px rgba(147, 64, 47, .22);
}
.app-icon span {
  position: absolute;
  left: 24px;
  top: 15px;
  width: 42px;
  height: 54px;
  border-radius: 4px;
  background: #fff9f0;
}
.app-icon i, .app-icon b {
  position: absolute;
  left: 34px;
  width: 23px;
  height: 3px;
  border-radius: 3px;
  background: #b9563f;
}
.app-icon i { top: 34px; }
.app-icon b { top: 47px; }
@media (max-width: 520px) {
  body { padding: 28px 14px; }
  section { padding: 22px 20px; }
}