:root{
  --ink:#17233b; --muted:#5b6b82; --line:#dde3ec; --bg:#f6f8fb; --card:#fff;
  --accent:#0b6bcb; --accent-ink:#fff; --good:#0d7a3f; --bad:#b3261e;
  --radius:14px;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}
a{color:var(--accent)}
header.site{background:var(--card);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;gap:20px;justify-content:space-between}
.logo{font-weight:800;font-size:1.15rem;color:var(--ink);text-decoration:none}
.logo span{color:var(--accent)}
nav.main a{margin-left:16px;color:var(--muted);text-decoration:none;font-size:.95rem}
nav.main a:hover{color:var(--ink)}
.wrap{max-width:1060px;margin:0 auto;padding:0 18px}
main{padding:28px 0 56px}
h1{font-size:1.9rem;line-height:1.25;margin:.2em 0 .35em}
.lede{color:var(--muted);font-size:1.05rem;max-width:46em}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start;margin:22px 0}
@media (max-width:820px){.calc-grid{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.card h2{margin-top:0;font-size:1.15rem}
fieldset{border:none;padding:0;margin:0 0 14px}
legend{font-weight:700;font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:8px;padding:0}
.field{margin-bottom:10px}
.field label{display:block;font-size:.92rem;margin-bottom:3px}
.field .hint{font-size:.8rem;color:var(--muted)}
.field input,.field select{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:9px;font-size:1rem;background:#fff;color:var(--ink)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.check{display:flex;gap:8px;align-items:center;font-size:.95rem}
.check input{width:auto}
table.lines{width:100%;border-collapse:collapse;font-size:.95rem}
table.lines td{padding:5px 2px;border-bottom:1px dashed var(--line)}
table.lines td:last-child{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
table.lines tr.total td{border-bottom:none;border-top:2px solid var(--ink);font-weight:700}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0}
.stat{border:1px solid var(--line);border-radius:10px;padding:10px 12px}
.stat .k{font-size:.8rem;color:var(--muted)}
.stat .v{font-size:1.35rem;font-weight:800;font-variant-numeric:tabular-nums}
.pos{color:var(--good)} .neg{color:var(--bad)}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);border:none;border-radius:9px;padding:9px 14px;font-size:.95rem;cursor:pointer;text-decoration:none}
.btn.ghost{background:#fff;color:var(--accent);border:1px solid var(--accent)}
table.compare{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
table.compare th,table.compare td{padding:10px 12px;text-align:right;font-variant-numeric:tabular-nums;border-bottom:1px solid var(--line)}
table.compare th:first-child,table.compare td:first-child{text-align:left}
table.compare tr.best td{background:#eef7f0;font-weight:700}
table.compare tr:last-child td{border-bottom:none}
details.detail{margin-top:6px}
details.detail summary{cursor:pointer;color:var(--accent);font-size:.9rem}
.prose{max-width:46em}
.prose h2{margin-top:1.6em}
.prose table{border-collapse:collapse;width:100%;font-size:.93rem}
.prose table th,.prose table td{border:1px solid var(--line);padding:6px 9px;text-align:left}
.note{font-size:.85rem;color:var(--muted)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:820px){.grid3{grid-template-columns:1fr}}
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.tool-card b{display:block;margin-bottom:4px}
.tool-card span{color:var(--muted);font-size:.92rem}
footer.site{border-top:1px solid var(--line);background:var(--card);color:var(--muted);font-size:.88rem}
footer.site .wrap{padding-top:18px;padding-bottom:26px}
.toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:8px 16px;border-radius:999px;font-size:.9rem;opacity:0;pointer-events:none;transition:opacity .25s}
.toast.show{opacity:1}