:root {
  color-scheme: dark;
  --bg: #090a0b;
  --card: #1b1d20;
  --text: #f7f8f8;
  --muted: #a9adb1;
  --accent: #d1ff05;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(circle at 50% -20%, #34383b 0, var(--bg) 45%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.75;
}
main { width: min(860px, calc(100% - 36px)); margin: 0 auto; padding: 64px 0 80px; }
.hero { text-align: center; padding: 24px 0 44px; }
.icon { width: 132px; height: 132px; border-radius: 29px; box-shadow: 0 20px 60px #0009; }
h1 { margin: 20px 0 6px; font-size: clamp(2rem, 8vw, 3.4rem); letter-spacing: -0.04em; }
h2 { margin-top: 0; font-size: 1.25rem; }
.lead { color: var(--muted); font-size: 1.05rem; }
.accent { color: var(--accent); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.card { background: var(--card); border: 1px solid #ffffff12; border-radius: 20px; padding: 22px; }
a { color: var(--accent); }
nav { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; margin-top: 30px; }
footer { color: var(--muted); text-align: center; font-size: .85rem; padding-top: 36px; }
ul { padding-left: 1.35rem; }