:root{
  --bg:#f6f8fb;--card:#ffffff;--text:#172033;--muted:#5d687a;--line:#dfe5ec;
  --brand:#0f766e;--brand-dark:#115e59;--soft:#ecfdf5;--warn:#fff7ed;--warn-line:#fed7aa;
  --shadow:0 16px 42px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  line-height:1.55
}
a{color:var(--brand-dark)}
.wrap{width:min(1080px,calc(100% - 32px));margin:auto}
header{
  background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10
}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{font-weight:800;font-size:1.35rem;text-decoration:none;color:var(--text);letter-spacing:-.02em}
.nav a.tool-link{font-size:.95rem;text-decoration:none;color:var(--muted);font-weight:650}
.hero{padding:76px 0 42px}
.eyebrow{display:inline-block;background:var(--soft);color:var(--brand-dark);font-weight:750;padding:6px 11px;border-radius:999px;font-size:.88rem}
h1{font-size:clamp(2.25rem,6vw,4.5rem);line-height:1.03;letter-spacing:-.045em;margin:18px 0 18px}
.hero p{font-size:1.14rem;color:var(--muted);max-width:720px;margin:0}
.grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:start}
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
.pad{padding:28px}
h2{letter-spacing:-.025em;margin:0 0 8px;font-size:1.6rem}
h3{margin:0 0 8px}
.muted{color:var(--muted)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
label{font-weight:700;font-size:.94rem}
input,select{
  width:100%;border:1px solid #cbd5e1;border-radius:12px;background:#fff;
  padding:13px 14px;font-size:1rem;color:var(--text);outline:none
}
input:focus,select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,118,110,.12)}
button{
  border:0;border-radius:12px;background:var(--brand);color:white;font-weight:800;
  padding:14px 18px;font-size:1rem;cursor:pointer
}
button:hover{background:var(--brand-dark)}
.result{display:none}
.result.show{display:block}
.big-number{font-size:2.2rem;font-weight:850;letter-spacing:-.04em;margin:4px 0}
.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.metric{border:1px solid var(--line);border-radius:14px;padding:15px;background:#fbfdff}
.metric small{display:block;color:var(--muted);font-weight:650}
.metric strong{display:block;font-size:1.2rem;margin-top:3px}
.note{
  margin-top:18px;padding:14px 15px;border-radius:13px;background:var(--warn);
  border:1px solid var(--warn-line);font-size:.93rem;color:#7c2d12
}
.tool-card{margin-bottom:20px}
.section{padding:26px 0}
.content{max-width:820px}
.content p,.content li{color:#3f4a5a}
.source-box{margin-top:20px;padding:18px;border:1px solid var(--line);border-radius:15px;background:#fff}
footer{border-top:1px solid var(--line);margin-top:58px;padding:30px 0 42px;color:var(--muted);font-size:.9rem}
.cta{
  display:inline-flex;margin-top:24px;background:var(--brand);color:#fff;text-decoration:none;
  padding:13px 18px;border-radius:12px;font-weight:800
}
.tools-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
.tool-tile{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;text-decoration:none;color:var(--text)}
.tool-tile:hover{border-color:#99cfc9}
.tool-tile span{display:block;color:var(--muted);font-size:.92rem;margin-top:4px}
.coming{opacity:.6;pointer-events:none}
@media(max-width:800px){
  .grid{grid-template-columns:1fr}.form-grid,.metric-grid,.tools-list{grid-template-columns:1fr}
  .field.full{grid-column:auto}.hero{padding-top:48px}.pad{padding:22px}
}