:root{--bg:#f6f7f9;--card:#fff;--ink:#1c2430;--muted:#5b6675;--brand:#0b6e4f;--brand2:#e8f4ef;--line:#dfe3e8}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{color:var(--brand)}header{background:var(--brand);color:#fff}header .wrap{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:14px 16px}
header a{color:#fff;text-decoration:none}.logo{font-weight:700;font-size:1.15rem}nav a{margin-left:14px;white-space:nowrap;font-size:.92rem;opacity:.9}nav a:hover{opacity:1;text-decoration:underline}
.wrap{max-width:1000px;margin:0 auto;padding:0 16px}main{padding:24px 0}h1{font-size:1.8rem;line-height:1.25;margin:.2em 0 .4em}h2{font-size:1.3rem;margin-top:1.6em}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;margin:16px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
label{display:block;font-size:.9rem;font-weight:600;margin-bottom:4px}input,select{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;font-size:1rem;background:#fff}
.chk{display:flex;gap:8px;align-items:center;font-weight:600}.chk input{width:auto}
button{background:var(--brand);color:#fff;border:0;border-radius:8px;padding:12px 22px;font-size:1rem;font-weight:600;cursor:pointer;margin-top:14px}button:hover{filter:brightness(1.1)}
.result{background:var(--brand2);border-radius:12px;padding:18px;margin-top:16px;display:none}.result.show{display:block}
.big{font-size:2rem;font-weight:800;color:var(--brand)}.rows{display:grid;grid-template-columns:1fr auto;gap:6px 16px;margin-top:10px}.rows span:nth-child(even){text-align:right;font-variant-numeric:tabular-nums;font-weight:600}
table{width:100%;border-collapse:collapse;font-size:.9rem;font-variant-numeric:tabular-nums}th,td{padding:6px 8px;border-bottom:1px solid var(--line);text-align:right}th:first-child,td:first-child{text-align:left}.tablewrap{overflow-x:auto;margin-top:12px}
.tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}.tools a{display:block;text-decoration:none;color:inherit}.tools a .card{height:100%;margin:0;transition:.15s}.tools a:hover .card{border-color:var(--brand);transform:translateY(-2px)}
.tools h3{margin:.1em 0;color:var(--brand)}.muted{color:var(--muted);font-size:.9rem}.note{font-size:.85rem;color:var(--muted);border-left:3px solid var(--line);padding-left:10px}
.ad-slot{min-height:100px;margin:20px 0;display:flex;align-items:center;justify-content:center;border:1px dashed var(--line);color:#aab;font-size:.8rem;border-radius:8px}
details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:8px 0}summary{font-weight:600;cursor:pointer}
footer{border-top:1px solid var(--line);padding:24px 0;font-size:.85rem;color:var(--muted);background:#fff}footer a{margin-right:14px}
@media(max-width:600px){h1{font-size:1.45rem}nav a{margin:0 12px 0 0}.big{font-size:1.6rem}}