:root {
  --bg: #0A0F1C;
  --panel: #111829;
  --panel-2: #172036;
  --line: #26314D;
  --text: #E9EDF5;
  --muted: #9AA4BC;
  --accent: #E5483C;
  --gold: #E9B949;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
}
a { color: var(--gold); }
.wrap { max-width: 720px; margin: 0 auto; padding: 0 16px; }
header.site {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
header.site .wrap { display: flex; align-items: center; gap: 12px; padding-top: 12px; padding-bottom: 12px; }
header.site img { width: 40px; height: 40px; border-radius: 10px; }
header.site a.brand { color: var(--text); text-decoration: none; font-weight: 700; }
nav { margin-left: auto; display: flex; gap: 14px; font-size: 14px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current] { color: var(--text); }
h1 { font-size: 26px; line-height: 1.4; margin: 32px 0 8px; }
h2 { font-size: 19px; margin: 32px 0 8px; color: var(--gold); }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 14px; }
.card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  margin: 16px 0;
}
.hero { text-align: center; padding: 48px 0 24px; }
.hero img { width: 128px; height: 128px; border-radius: 28px; box-shadow: 0 8px 32px rgba(229, 72, 60, .25); }
.hero h1 { font-size: 30px; margin-top: 20px; }
.hero .tag { color: var(--muted); margin: 0; }
.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}
.features { display: grid; grid-template-columns: 1fr; gap: 12px; padding: 0; list-style: none; }
@media (min-width: 600px) { .features { grid-template-columns: 1fr 1fr; } }
.features li { background: var(--panel-2); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; }
.features b { display: block; color: var(--gold); }
dl.faq dt { font-weight: 700; margin-top: 18px; }
dl.faq dd { margin: 4px 0 0; color: var(--muted); }
footer { border-top: 1px solid var(--line); margin-top: 48px; padding: 20px 0 40px; color: var(--muted); font-size: 13px; }
footer a { color: var(--muted); }