:root {
  --bg: #0b0d13;
  --surface: #15181f;
  --text: #f2f4f8;
  --text-2: #9aa2b1;
  --accent: #ff6b4a;
  color-scheme: dark;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Segoe UI", sans-serif;
  line-height: 1.85;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 48px 24px 96px; }
header { margin-bottom: 40px; }
.logo { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
.logo .mark {
  width: 40px; height: 40px; border-radius: 10px;
  background: conic-gradient(from 240deg at 50% 50%, #ff6b4a 0deg, #ff9f45 120deg, #15181f 120deg);
  border: 1px solid rgba(255,255,255,.08);
}
.logo span { font-weight: 700; font-size: 18px; letter-spacing: .02em; }
h1 { font-size: 28px; font-weight: 800; letter-spacing: .01em; }
.updated { color: var(--text-2); font-size: 13px; margin-top: 8px; }
h2 { font-size: 18px; font-weight: 700; margin: 36px 0 10px; color: var(--accent); }
p, li { color: var(--text); font-size: 15px; }
ul { padding-left: 22px; margin: 8px 0; }
.note {
  background: var(--surface); border: 1px solid rgba(255,255,255,.06);
  border-radius: 14px; padding: 18px 20px; margin: 20px 0; font-size: 15px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
footer { margin-top: 64px; color: var(--text-2); font-size: 13px; border-top: 1px solid rgba(255,255,255,.07); padding-top: 20px; }
hr.sep { border: none; border-top: 1px solid rgba(255,255,255,.08); margin: 48px 0; }
.en h2 { color: var(--text); }