:root {
  --bg: #f2f2f7; --card: #ffffff; --text: #1c1c1e; --muted: #6c6c70;
  --accent: #0a84ff; --line: rgba(60,60,67,.14);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #000; --card: #1c1c1e; --text: #f2f2f7; --muted: #98989f; --line: rgba(235,235,245,.16); }
}
* { 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", "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  padding: 0 16px calc(40px + env(safe-area-inset-bottom));
}
main { max-width: 680px; margin: 0 auto; }
header { display: flex; align-items: center; gap: 12px; padding: 28px 0 8px; }
header img { width: 44px; height: 44px; border-radius: 11px; }
header a { color: inherit; text-decoration: none; font-weight: 700; font-size: 19px; }
h1 { font-size: 32px; line-height: 1.15; letter-spacing: -.02em; margin: 20px 0 6px; }
.updated { color: var(--muted); font-size: 15px; margin: 0 0 20px; }
.summary { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 16px 18px; margin: 0 0 28px; }
.summary h2 { margin-top: 0; font-size: 15px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.summary ul { margin: 0; padding-left: 20px; }
h2 { font-size: 21px; line-height: 1.25; margin: 32px 0 8px; letter-spacing: -.01em; }
h3 { font-size: 17px; margin: 20px 0 4px; }
p, li { color: var(--text); }
ul { padding-left: 22px; }
li { margin: 4px 0; }
a { color: var(--accent); }
table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 8px 0; }
th, td { text-align: left; vertical-align: top; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: .04em; }
.table-wrap { overflow-x: auto; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 14px 16px; margin: 10px 0; }
.faq summary { font-weight: 600; cursor: pointer; }
.faq details p { margin: 10px 0 0; color: var(--muted); }
.btn { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; font-weight: 600; padding: 14px 22px; border-radius: 999px; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); margin-right: 14px; }