:root {
  --bg: #1a0b33; --card: #2a1258; --text: #f4f0ff; --muted: #c3b3e3; --pink: #ff4f9a; --yellow: #ffd23f; --line: #4a2a85;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.8 "Hiragino Sans", "Noto Sans JP", "Yu Gothic", system-ui, sans-serif; }
header { padding: 28px 16px 8px; text-align: center; }
header a { color: var(--text); text-decoration: none; font-weight: 800; font-size: 22px; letter-spacing: .04em; }
header .sub { color: var(--muted); font-size: 13px; }
main { max-width: 760px; margin: 0 auto; padding: 8px 16px 48px; }
h1 { font-size: 26px; line-height: 1.4; margin: 24px 0 8px; }
h2 { font-size: 19px; margin: 32px 0 8px; padding-left: 10px; border-left: 4px solid var(--pink); }
h3 { font-size: 16px; margin: 20px 0 4px; color: var(--yellow); }
p, li { color: var(--text); }
.muted, .date { color: var(--muted); font-size: 14px; }
a { color: var(--yellow); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 16px 20px; margin: 16px 0; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
th { width: 32%; color: var(--muted); font-weight: 600; }
.todo { background: #ffd23f22; color: var(--yellow); border-radius: 6px; padding: 0 4px; }
.lang { text-align: right; font-size: 14px; }
.hero { text-align: center; margin: 24px 0; }
.hero img { width: 180px; border-radius: 36px; box-shadow: 0 8px 32px #ff4f9a55; }
.btn { display: inline-block; background: var(--pink); color: #fff; text-decoration: none; font-weight: 800; padding: 12px 28px; border-radius: 999px; margin: 8px; }
footer { text-align: center; color: var(--muted); font-size: 13px; padding: 24px 16px 40px; border-top: 1px solid var(--line); }
footer a { color: var(--muted); margin: 0 8px; }
@media (max-width: 520px) { th { width: 38%; } th, td { padding: 8px 6px; } }