:root {
  --bg: #07080d;
  --panel: #10131c;
  --line: #222838;
  --text: #eef1f7;
  --muted: #9aa3b5;
  --red: #ff3b3b;
  --cyan: #8fe3ff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 600px at 80% -10%, #3a0d14 0%, transparent 60%), var(--bg);
  line-height: 1.6;
}
a { color: var(--cyan); }
img { max-width: 100%; display: block; }
.wrap { width: min(1000px, 100% - 32px); margin-inline: auto; }
header { padding: 18px 0; }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; font-weight: 800; font-size: 20px; letter-spacing: .5px; }
.brand img { width: 40px; height: 40px; border-radius: 10px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:hover { color: var(--text); }
.hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; align-items: center; padding: 32px 0 56px; }
.hero h1 { font-size: clamp(44px, 8vw, 80px); line-height: 1; margin: 0 0 12px; letter-spacing: 1px; }
.hero .tag { color: var(--red); font-weight: 800; letter-spacing: 2px; text-transform: uppercase; margin: 0 0 18px; }
.hero p { color: var(--muted); font-size: 18px; max-width: 520px; }
.hero img { border-radius: 24%; box-shadow: 0 20px 60px rgba(255, 40, 60, .25); }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding-bottom: 56px; }
.card, .panel { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 22px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.panel { margin: 24px 0 56px; }
.panel h1 { margin-top: 0; }
.panel h2 { font-size: 19px; margin-top: 28px; }
.muted { color: var(--muted); }
details { border-top: 1px solid var(--line); padding: 12px 0; }
summary { cursor: pointer; font-weight: 700; }
footer { border-top: 1px solid var(--line); padding: 22px 0; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); margin-left: 16px; }
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  nav a { margin-left: 12px; }
}