:root { --brass: #c8a35f; --ink: #222; --muted: #777; --line: #e5e5e5; --in: #1e7f4f; --out: #a34a2a; }
* { box-sizing: border-box; }
html { color-scheme: light; }
body { margin: 0; font: 17px/1.5 -apple-system, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif; color: var(--ink); background: #fafaf7; }
main { max-width: 480px; margin: 0 auto; padding: 16px 16px 48px; }
h1 { font-size: 22px; margin: 8px 0 16px; }
h2 { font-size: 17px; margin: 24px 0 8px; color: var(--muted); }
button { font: inherit; cursor: pointer; border-radius: 12px; border: 1px solid var(--line); background: #fff; padding: 12px 16px; }
button:disabled { opacity: .5; cursor: default; }
.big { display: block; width: 100%; font-size: 28px; font-weight: 700; padding: 28px 16px; margin: 12px 0; color: #fff; border: 0; }
.big.in { background: var(--in); }
.big.out { background: var(--out); }
.big.secondary, .secondary { background: #fff; color: var(--ink); border: 1px solid var(--line); font-size: 18px; font-weight: 500; padding: 16px; }
.link { background: none; border: 0; color: var(--muted); text-decoration: underline; padding: 8px 0; }
.who { font-size: 20px; margin: 4px 0; }
.result { font-size: 20px; font-weight: 700; color: var(--brass); min-height: 1.5em; }
.error { color: #b00020; background: #fde8ec; padding: 10px 12px; border-radius: 8px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 12px; margin: 8px 0; }
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); font-size: 15px; vertical-align: top; }
th { color: var(--muted); font-weight: 500; }
label { display: block; margin: 8px 0; }
input, select { font: inherit; padding: 10px; border: 1px solid var(--line); border-radius: 8px; width: 100%; }
form.row { display: grid; gap: 8px; }
.muted { color: var(--muted); font-size: 14px; }
ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { padding: 8px 0; border-bottom: 1px solid var(--line); display: grid; gap: 6px; }