:root{
  --ink:#14161a; --muted:#5c6470; --line:#e3e6ea; --soft:#f6f7f9;
  --accent:#b4530a; --accent-soft:#fdf3e9; --ok:#1f6b45; --ok-soft:#eef7f1;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
     color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased;background:#fff}
.wrap{max-width:760px;margin:0 auto;padding:0 24px}
header{border-bottom:1px solid var(--line);padding:16px 0}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.brand{font-weight:600;font-size:15px;letter-spacing:-.01em;color:var(--ink);text-decoration:none}
.brand span{color:var(--muted);font-weight:400}
nav{display:flex;gap:18px;font-size:13px;flex-wrap:wrap}
nav a{color:var(--muted);text-decoration:none}
nav a:hover{color:var(--ink)}
h1{font-size:32px;line-height:1.22;letter-spacing:-.02em;margin:44px 0 14px;font-weight:600}
h2{font-size:20px;letter-spacing:-.01em;margin:40px 0 12px;font-weight:600}
h3{font-size:15px;margin:22px 0 6px;font-weight:600}
p{margin:0 0 14px}
.lead{font-size:17px;color:var(--muted)}
a{color:var(--ink)}
.cta{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;
     padding:13px 26px;border-radius:8px;font-weight:500;font-size:15px;border:none;cursor:pointer}
.cta:hover{background:#000}
.cta-note{font-size:13px;color:var(--muted);margin-top:10px}
.kicker{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);font-weight:600;margin-bottom:8px}
.price{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:26px;margin:20px 0}
.price .num{font-size:38px;font-weight:600;letter-spacing:-.02em}
.price .was{color:var(--muted);text-decoration:line-through;font-size:16px;margin-left:8px}
.price ul{margin:14px 0 18px;padding-left:20px;color:var(--muted);font-size:14px}
.price li{margin:4px 0}
table{width:100%;border-collapse:collapse;font-size:14px;margin:18px 0}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:500;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em}
tr.hit td{background:var(--accent-soft);font-weight:500}
.warn{background:var(--accent-soft);border-left:3px solid var(--accent);padding:14px 18px;border-radius:0 8px 8px 0;margin:18px 0;font-size:14px}
.ok{background:var(--ok-soft);border-left:3px solid var(--ok);padding:14px 18px;border-radius:0 8px 8px 0;margin:18px 0;font-size:14px}
.calc{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:22px;margin:22px 0}
.calc .row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:16px}
.calc label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px}
.calc input{width:100%;font-size:15px;padding:9px 11px;border:1px solid var(--line);border-radius:7px;
            font-family:inherit;background:#fff;color:var(--ink)}
.calc input:focus{outline:2px solid var(--ink);outline-offset:-1px}
.result{border-top:1px solid var(--line);padding-top:16px}
.result .big{font-size:30px;font-weight:600;letter-spacing:-.02em}
.result .tier{display:inline-block;font-size:13px;padding:4px 12px;border-radius:999px;
              background:var(--accent-soft);color:var(--accent);font-weight:500;margin:8px 0}
.result .sub{font-size:14px;color:var(--muted)}
ol.steps{padding-left:0;list-style:none;counter-reset:s}
ol.steps li{counter-increment:s;position:relative;padding-left:38px;margin:14px 0}
ol.steps li::before{content:counter(s);position:absolute;left:0;top:1px;width:24px;height:24px;
     border-radius:50%;background:var(--soft);border:1px solid var(--line);font-size:13px;
     display:flex;align-items:center;justify-content:center;font-weight:600}
details{border-bottom:1px solid var(--line);padding:12px 0}
summary{cursor:pointer;font-weight:500;font-size:15px}
details p{margin:8px 0 0;color:var(--muted);font-size:14px}
footer{border-top:1px solid var(--line);margin-top:56px;padding:24px 0 60px;font-size:13px;color:var(--muted)}
.small{font-size:13px;color:var(--muted)}
em{font-style:normal;background:#fff3cd;padding:0 3px}
.src{font-size:12px;color:var(--muted);margin-top:-6px}
@media(max-width:600px){
  h1{font-size:26px}
  .calc .row{grid-template-columns:repeat(2,minmax(0,1fr))}
  nav{gap:12px;font-size:12px}
}