:root{
  --bg:#f6f7fb; --card:#ffffff; --text:#14213d; --muted:#5b6478; --line:#e3e6ef;
  --brand:#4f46e5; --brand-d:#4338ca; --good:#16a34a; --tax:#f59e0b; --exp:#94a3b8;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#0f1220; --card:#181c30; --text:#eef0fa; --muted:#a2a9c0; --line:#2a2f4a; --brand:#818cf8; --brand-d:#6366f1; }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.55}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}
header{padding:28px 0 8px}
.logo{font-weight:800;font-size:1.25rem;letter-spacing:-.02em}
.logo a{color:inherit;text-decoration:none}
.logo span{color:var(--brand)}
.nav{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:10px}
.nav a{color:var(--muted);text-decoration:none;font-size:.9rem;font-weight:600}
.nav a:hover,.nav a.on{color:var(--brand)}
h1{font-size:clamp(1.6rem,5vw,2.4rem);line-height:1.2;margin:14px 0 8px;letter-spacing:-.02em}
.lead{color:var(--muted);margin:0 0 20px;max-width:640px}
.grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:800px){.grid{grid-template-columns:1fr 1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px}
.card h2{margin:0 0 14px;font-size:1.05rem}
label{display:block;font-weight:600;font-size:.9rem;margin:14px 0 6px}
label small{font-weight:400;color:var(--muted)}
input,select{width:100%;padding:12px 14px;font-size:1rem;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text)}
input:focus,select:focus{outline:2px solid var(--brand);outline-offset:1px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.big{background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff;border-radius:14px;padding:20px;text-align:center}
.big .t{font-size:.9rem;opacity:.9}
.big .n{font-size:clamp(2.2rem,9vw,3.2rem);font-weight:800;letter-spacing:-.02em;line-height:1.1}
.big .u{font-size:.9rem;opacity:.9}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.stat{border:1px solid var(--line);border-radius:12px;padding:12px}
.stat .k{font-size:.78rem;color:var(--muted)}
.stat .v{font-size:1.1rem;font-weight:700}
.bar{display:flex;height:16px;border-radius:99px;overflow:hidden;margin:16px 0 8px;background:var(--line)}
.bar div{height:100%;transition:width .3s}
.legend{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.82rem;color:var(--muted)}
.legend i{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:5px}
button{margin-top:14px;width:100%;padding:12px;border:0;border-radius:10px;background:var(--text);color:var(--bg);font-weight:700;font-size:.95rem;cursor:pointer}
button:hover{opacity:.9}
.err{color:#dc2626;font-size:.9rem;margin-top:10px;min-height:1.2em}
.note{font-size:.85rem;color:var(--muted);margin-top:12px}
section.info{margin:32px 0}
section.info h2{font-size:1.4rem;margin:0 0 10px}
section.info p,section.info li{color:var(--muted)}
ol{padding-left:20px}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600}
details p{margin:10px 0 0}
.tools{display:grid;gap:12px;grid-template-columns:1fr}
@media(min-width:700px){.tools{grid-template-columns:repeat(3,1fr)}}
.tool{display:block;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;text-decoration:none;color:var(--text)}
.tool:hover{border-color:var(--brand)}
.tool b{display:block;margin-bottom:4px}
.tool span{color:var(--muted);font-size:.88rem}
footer{border-top:1px solid var(--line);padding:22px 0 40px;color:var(--muted);font-size:.85rem;margin-top:40px}
.post{max-width:720px}
.post h2{font-size:1.35rem;margin:30px 0 10px}
.post p,.post li{color:var(--text);font-size:1.02rem}
.post ul,.post ol{padding-left:22px}
.post li{margin-bottom:6px}
.post a,.info a{color:var(--brand)}
.callout{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:12px;padding:14px 18px;margin:18px 0}
.callout ul{margin:8px 0 0}
.tablewrap{overflow-x:auto;margin:14px 0}
.post table{width:100%;border-collapse:collapse;font-size:.95rem}
.post th,.post td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.post th{background:var(--card)}
.post h3{font-size:1.1rem;margin:18px 0 6px}
.footlinks{display:flex;flex-wrap:wrap;gap:6px 16px;margin:12px 0 0}
.footlinks a{font-size:.95rem;color:var(--muted);text-decoration:none}
.footlinks a:hover{color:var(--brand)}