:root {
  --bg: #f7f7fb;
  --card: #ffffff;
  --text: #1d1d24;
  --muted: #5d6070;
  --accent: #5a5cf2;
  --accent-2: #3fa0ff;
  --border: #e3e4ee;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121218;
    --card: #1c1c25;
    --text: #ececf3;
    --muted: #a3a6b8;
    --accent: #8b8dff;
    --accent-2: #63b3ff;
    --border: #2c2d3a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
}
main { max-width: 860px; margin: 0 auto; padding: 48px 16px 64px; }
a { color: var(--accent); }
header.hero { text-align: center; padding: 24px 0 8px; }
header.hero img { width: 128px; height: 128px; }
h1 { font-size: 2.6rem; line-height: 1.15; margin: 12px 0 8px; letter-spacing: -0.02em; }
h2 { font-size: 1.4rem; margin: 40px 0 12px; }
.tagline { font-size: 1.25rem; color: var(--muted); margin: 0 auto 24px; max-width: 34em; }
.buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin: 24px 0; }
.button {
  display: inline-block; padding: 11px 20px; border-radius: 12px; text-decoration: none; font-weight: 600;
  background: linear-gradient(135deg, var(--accent-2), var(--accent)); color: #fff;
}
.button.secondary { background: var(--card); color: var(--text); border: 1px solid var(--border); }
.shot { width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--border); margin: 16px 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px 20px; }
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }
kbd {
  font: 600 0.9em -apple-system, sans-serif; padding: 1px 7px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--card);
}
.doc { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 8px 28px 24px; }
.muted { color: var(--muted); }
footer { text-align: center; color: var(--muted); font-size: 0.9rem; margin-top: 48px; }
code { overflow-wrap: anywhere; font-size: 0.92em; }
.doc { overflow-wrap: break-word; }
@media (max-width: 520px) {
  h1 { font-size: 2.1rem; }
  .doc { padding: 4px 18px 18px; }
}