:root {
  --bg: #f6f7f9; --card: #fff; --text: #1d1f23; --muted: #6b7280;
  --line: #e3e6ea; --accent: #1a73e8; --accent-text: #fff;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121316; --card: #1c1e22; --text: #e8eaed; --muted: #9aa0a6; --line: #33363b; --accent: #8ab4f8; --accent-text: #0b1b33; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.8 -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 48px; }
header.site { display: flex; justify-content: space-between; align-items: center; max-width: 760px; margin: 0 auto; padding: 16px; }
header.site a { color: var(--text); text-decoration: none; font-weight: 700; }
h1 { font-size: 28px; line-height: 1.4; margin: 0 0 16px; }
h2 { font-size: 20px; margin: 40px 0 12px; }
h3 { font-size: 16px; margin: 24px 0 8px; }
p, li { color: var(--text); }
a { color: var(--accent); }
.lead { font-size: 18px; color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px; margin: 16px 0; }
.cta { display: inline-block; margin-top: 8px; padding: 14px 28px; border-radius: 10px; background: var(--accent); color: var(--accent-text); font-weight: 700; text-decoration: none; }
.grid { display: grid; gap: 16px; }
@media (min-width: 720px) { .grid { grid-template-columns: repeat(3, 1fr); } .grid.two { grid-template-columns: repeat(2, 1fr); } }
.grid .card { margin: 0; }
.price { font-size: 28px; font-weight: 700; }
table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
th, td { text-align: left; vertical-align: top; padding: 12px 16px; border-bottom: 1px solid var(--line); font-size: 15px; }
th { width: 30%; color: var(--muted); font-weight: 600; }
tr:last-child th, tr:last-child td { border-bottom: 0; }
@media (max-width: 600px) { th, td { display: block; width: 100%; } th { border-bottom: 0; padding-bottom: 0; } }
.updated { color: var(--muted); font-size: 14px; }
footer.site { text-align: center; font-size: 13px; color: var(--muted); padding: 24px 16px 40px; }
footer.site a { color: var(--muted); margin: 0 8px; }