:root { --ink: #121213; --muted: #787c7e; --line: #d3d6da; --green: #6aaa64; --soft: #eef6ee; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: #fff; color: var(--ink);
  font: 16px/1.6 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
header { border-bottom: 1px solid var(--line); }
.bar { max-width: 760px; margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.bar a.brand { color: var(--ink); text-decoration: none; font-weight: 800; letter-spacing: 4px; display: flex; align-items: center; gap: 10px; }
.bar img { width: 32px; height: 32px; }
.bar nav { margin-left: auto; display: flex; gap: 16px; font-size: 14px; }
.bar nav a { color: var(--muted); text-decoration: none; }
.bar nav a:hover { color: var(--ink); }
main { max-width: 760px; margin: 0 auto; padding: 32px 20px 64px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 36px 0 8px; }
p, li { color: #2b2c2d; }
.muted { color: var(--muted); font-size: 14px; }
a { color: #2f7d32; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px; border: 1px solid var(--line); }
th { background: #f7f8f9; }
.hero { text-align: center; padding: 24px 0 8px; }
.hero img { width: 140px; height: 140px; }
.hero h1 { letter-spacing: 8px; font-size: 34px; margin-top: 8px; }
.tag { color: var(--muted); font-size: 18px; margin: 4px 0 0; }
.rule { width: 80px; height: 4px; background: var(--green); border-radius: 2px; margin: 14px auto 0; }
.cards { display: grid; gap: 12px; margin: 28px 0; }
@media (min-width: 640px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card { border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.card b { display: block; margin-bottom: 4px; }
.tiles { display: flex; gap: 6px; justify-content: center; margin: 22px 0 6px; }
.tiles span { width: 44px; height: 44px; display: grid; place-items: center; color: #fff; font-weight: 800; border-radius: 4px; font-size: 22px; }
.g { background: var(--green); } .y { background: #c9b458; } .x { background: var(--muted); }
.note { background: var(--soft); border: 1px solid #bfe0bb; border-radius: 12px; padding: 14px 16px; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer div { max-width: 760px; margin: 0 auto; padding: 18px 20px; display: flex; gap: 16px; flex-wrap: wrap; }
footer a { color: var(--muted); }