:root {
  --bg: #000;
  --card: #1c1c1e;
  --text: #f5f5f7;
  --dim: #a1a1a6;
  --red: #e5383b;
  --blue: #0a84ff;
}
* { 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", "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 22px; }

header { padding: 18px 0; }
header .wrap { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 800; font-size: 18px; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
nav a { color: var(--dim); margin-left: 18px; font-size: 15px; }

.hero { text-align: center; padding: 56px 0 40px; }
.hero img { width: 112px; height: 112px; border-radius: 26px; box-shadow: 0 10px 40px rgba(229, 56, 59, .35); }
.hero h1 { font-size: 44px; line-height: 1.1; margin: 22px 0 10px; letter-spacing: -.02em; }
.hero p { color: var(--dim); font-size: 20px; margin: 0 auto 28px; max-width: 560px; }
.button {
  display: inline-block; background: var(--red); color: #fff; font-weight: 800;
  padding: 15px 26px; border-radius: 14px; font-size: 17px;
}
.button:hover { text-decoration: none; filter: brightness(1.08); }
.small { color: var(--dim); font-size: 14px; margin-top: 12px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; padding: 24px 0 48px; }
.card { background: var(--card); border-radius: 18px; padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--dim); font-size: 15px; }

.doc { padding: 24px 0 56px; }
.doc h1 { font-size: 34px; margin: 10px 0 4px; }
.doc h2 { font-size: 21px; margin: 30px 0 6px; }
.doc p, .doc li { color: #d1d1d6; }
.doc .updated { color: var(--dim); font-size: 15px; }

footer { border-top: 1px solid #222; padding: 22px 0 40px; color: var(--dim); font-size: 14px; }
footer a { color: var(--dim); margin-right: 16px; }