:root {
  --bg: #0f0c0a;
  --bg-elev: #1a1410;
  --card: #211a16;
  --ink: #f5f3ff;
  --muted: #c4b5a8;
  --orange: #f97316;
  --purple: #8b5cf6;
  --line: rgba(255, 255, 255, 0.08);
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); }
body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  line-height: 1.55;
}
a { color: #fb923c; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }
header {
  border-bottom: 1px solid var(--line);
  background: rgba(15, 12, 10, 0.92);
  position: sticky; top: 0; z-index: 4;
}
.top {
  display: flex; align-items: center; gap: 16px;
  max-width: 880px; margin: 0 auto; padding: 14px 20px;
}
.brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 800; }
.brand img { width: 36px; height: 36px; border-radius: 10px; }
.brand .fuzi { color: #f97316; font-style: italic; letter-spacing: -0.6px; }
.brand .map { color: #8b5cf6; }
nav { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
nav a { color: #d1d5db; text-decoration: none; font-size: 14px; padding: 6px 8px; }
nav a.cta {
  background: var(--orange); color: #fff; border-radius: 999px;
  padding: 8px 16px; font-weight: 700;
}
.hero {
  padding: 48px 0 28px;
  background:
    radial-gradient(900px 280px at 80% -10%, rgba(249, 115, 22, 0.22), transparent 60%),
    radial-gradient(700px 240px at 0% 0%, rgba(139, 92, 246, 0.16), transparent 55%);
}
h1 { font-size: clamp(28px, 4vw, 42px); line-height: 1.12; letter-spacing: -1px; margin: 0 0 12px; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 22px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; }
.btn {
  display: inline-block; text-decoration: none; border-radius: 999px;
  padding: 12px 20px; font-weight: 800;
}
.btn-primary { background: linear-gradient(90deg, #fb923c, #ea580c); color: #fff; }
.btn-ghost { border: 1px solid var(--line); color: #fff; }
main { padding: 8px 0 48px; }
h2 { font-size: 22px; margin: 28px 0 10px; }
p, li { font-size: 16px; color: #ede8e3; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin: 18px 0; }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; padding: 16px 16px 14px;
}
.card h3 { margin: 0 0 6px; font-size: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.faq details {
  background: var(--bg-elev); border: 1px solid var(--line);
  border-radius: 12px; padding: 12px 14px; margin: 8px 0;
}
.faq summary { cursor: pointer; font-weight: 700; }
.related a { margin-right: 14px; }
footer {
  border-top: 1px solid var(--line); color: var(--muted);
  padding: 22px 0 36px; font-size: 13px;
}
footer a { color: #c4b5fd; margin-right: 10px; }
@media (max-width: 700px) {
  nav .hide-sm { display: none; }
  h1 { font-size: 28px; }
}