:root { --bg: #ffffff; --fg: #1d1d1b; --mut: #5f5f5a; --line: #ddd9cf; --acc: #1f5f8b; --hi: #eef4f8; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.65 "Segoe UI", Roboto, system-ui, -apple-system, "Hiragino Sans", "Noto Sans", sans-serif; }
header { border-bottom: 1px solid var(--line); padding: 10px 16px; font-size: 14px; }
header a { color: var(--acc); }
main { max-width: 640px; margin: 0 auto; padding: 16px; }
h1 { font-size: 26px; line-height: 1.3; margin: 12px 0; }
h2 { font-size: 19px; margin-top: 32px; }
.lead, .small, .src { color: var(--mut); }
.small, .src { font-size: 13px; }
fieldset { border: 1px solid var(--line); border-radius: 10px; margin: 0 0 16px; padding: 12px 14px; }
legend { font-weight: 600; padding: 0 6px; }
label { display: block; margin: 8px 0; font-size: 14px; }
input, select { display: block; width: 100%; margin-top: 4px; padding: 10px; font: inherit; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg); }
button { width: 100%; padding: 12px; font: inherit; font-weight: 600; border: 0; border-radius: 10px; background: var(--acc); color: #fff; cursor: pointer; }
#out table { width: 100%; border-collapse: collapse; margin-top: 16px; }
#out th, #out td { padding: 8px 4px; border-bottom: 1px solid var(--line); text-align: left; font-weight: 400; }
#out td { text-align: right; font-variant-numeric: tabular-nums; }
#out .hi { background: var(--hi); font-weight: 700; }
.warn { color: #b0472c; }
.total { font-size: 20px; margin-top: 16px; }
footer { max-width: 640px; margin: 32px auto 0; padding: 16px; border-top: 1px solid var(--line); font-size: 13px; color: var(--mut); }
footer a, main a { color: var(--acc); }
.guides li { margin: 6px 0; }
.cta { margin-top: 24px; font-weight: 600; }
article ul, article ol { padding-left: 1.3em; }
.share { margin: 20px 0; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 14px; }
.share .sharebtn { width: auto; padding: 8px 14px; font-size: 14px; }
.share a { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; text-decoration: none; }