:root {
  --bg: #f4f7f6; --card: #ffffff; --ink: #12201e; --muted: #5d6c68; --line: #e2e9e7; --teal: #0f6e66; --coin: #a87500;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1514; --card: #162120; --ink: #e4edeb; --muted: #9bacA8; --line: #283634; --teal: #4cc3b4; --coin: #f0b63a; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 40px 16px 72px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
header img { width: 44px; height: 44px; border-radius: 12px; }
header a { color: var(--ink); text-decoration: none; font-weight: 800; font-size: 1.15rem; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.4rem; }
p, li { color: var(--ink); }
.muted { color: var(--muted); }
a { color: var(--teal); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin: 16px 0; }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-wrap { overflow-x: auto; }
footer { margin-top: 48px; font-size: 0.9rem; color: var(--muted); }