:root{--bg:#f7f7f5;--fg:#1a1a1a;--muted:#666;--card:#fff;--line:#e3e3df;--accent:#0b5fff;--pos:#0a7a3d;--neg:#c0262d;color-scheme:light dark}
@media(prefers-color-scheme:dark){:root{--bg:#141416;--fg:#ececec;--muted:#9a9a9a;--card:#1e1e22;--line:#2e2e34;--accent:#6ea0ff;--pos:#3ccf7a;--neg:#ff6b6b}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Noto Sans JP","Noto Sans KR",sans-serif}
header,footer{max-width:900px;margin:0 auto;padding:12px 16px;font-size:14px;color:var(--muted)}
footer{border-top:1px solid var(--line);margin-top:40px;line-height:2}
.brand{font-weight:700;color:var(--fg);text-decoration:none}
main{max-width:900px;margin:0 auto;padding:0 16px}
a{color:var(--accent)}
h1{font-size:1.6rem;line-height:1.25;margin:8px 0 12px}
h2{font-size:1.15rem;margin:28px 0 10px}
.intro{color:var(--muted);margin:0 0 16px}
.calc{display:grid;grid-template-columns:1fr 1fr;gap:20px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}
@media(max-width:700px){.calc{grid-template-columns:1fr}}
form label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}
form label:first-child{margin-top:0}
.in{display:flex;align-items:center;border:1px solid var(--line);border-radius:8px;background:var(--bg)}
.in input{flex:1;min-width:0;border:0;background:transparent;color:var(--fg);font:inherit;padding:8px 10px;outline:0}
.in span{padding:0 10px;color:var(--muted);font-size:13px}
select{width:100%;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);font:inherit;padding:8px 10px}
#reset{margin-top:16px;border:1px solid var(--line);background:transparent;color:var(--muted);border-radius:8px;padding:6px 12px;font:inherit;cursor:pointer}
.out h2{margin-top:0}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.kpi{background:var(--bg);border-radius:10px;padding:10px 12px}
.kpi span{display:block;font-size:12px;color:var(--muted)}
.kpi b{font-size:1.25rem}
.kpi.pos b{color:var(--pos)}.kpi.neg b{color:var(--neg)}
table{width:100%;border-collapse:collapse;font-size:14px}
caption{text-align:left;font-weight:600;padding:14px 0 6px}
td,th{padding:6px 4px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
td:last-child,th:last-child{text-align:right;white-space:nowrap}
.fees .total th,.fees .total td{font-weight:700;border-bottom:0}
.be{font-size:14px;color:var(--muted);margin:12px 0 0}
.be b{color:var(--fg)}
.note,.meta{font-size:13px;color:var(--muted)}
.rates{background:var(--card);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.rates th{background:var(--bg)}
.notes{padding-left:18px;font-size:14px;color:var(--muted)}
details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:8px 0}
summary{cursor:pointer;font-weight:600}
details p{margin:8px 0 0;font-size:15px}
.list{padding-left:18px}.list li{margin:4px 0}
.ad{margin:16px 0}
.ad:empty{display:none}