:root{--bg:#0e1116;--panel:#171c24;--line:#2a313c;--tx:#eef1f5;--mut:#9aa4b2;--ac:#ffb81c;--ac2:#1d2a1f;--ok:#3ddc97}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.65 "Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif}
a{color:var(--ac)}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--ac);outline-offset:3px}
.w{max-width:1040px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(14,17,22,.95);z-index:5}
header .w{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
.logo{font-weight:800;font-size:19px;color:var(--tx);text-decoration:none;letter-spacing:-.3px}.logo b{color:var(--ac)}
nav{display:flex;gap:20px;align-items:center}nav a{color:var(--mut);text-decoration:none;font-size:15px}nav a:hover{color:var(--tx)}
.btn{display:inline-block;background:var(--ac);color:#111;font-weight:700;padding:12px 22px;border-radius:8px;text-decoration:none;border:0;cursor:pointer;font-size:16px}
.btn:hover{background:#ffc94d}nav .btn{padding:8px 16px;font-size:14px;color:#111}
.btn.o{background:none;color:var(--tx);border:1px solid var(--line)}
section{padding:72px 0;border-bottom:1px solid var(--line)}
h1{font-size:clamp(34px,6vw,60px);line-height:1.08;margin:0 0 20px;letter-spacing:-1.5px}
h2{font-size:clamp(26px,4vw,36px);margin:0 0 12px;letter-spacing:-.8px}h3{margin:0 0 6px;font-size:18px}
.lead{color:var(--mut);font-size:19px;max-width:620px;margin:0 0 28px}.mut{color:var(--mut)}
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.meter{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px}
.row{display:flex;justify-content:space-between;align-items:baseline;padding:14px 0;border-bottom:1px solid var(--line)}
.row:last-child{border:0}.row s{color:var(--mut)}.row strong{color:var(--ac);font-size:24px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:28px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:24px}
.card.hl{border-color:var(--ac)}.big{font-size:34px;font-weight:800;color:var(--ac);margin:6px 0}
ol.steps{padding-left:22px;max-width:640px}ol.steps li{margin:12px 0;padding-left:6px}
.calc{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px}
label{display:block;margin:0 0 6px;color:var(--mut);font-size:14px}
input[type=number],select{width:100%;padding:12px;border-radius:8px;border:1px solid var(--line);background:var(--bg);color:var(--tx);font-size:16px;margin-bottom:16px}
.res{background:var(--ac2);border:1px solid #2f4a35;border-radius:12px;padding:24px}.res .big{color:var(--ok)}
details{border-bottom:1px solid var(--line);padding:16px 0}summary{cursor:pointer;font-weight:600;font-size:17px}details p{color:var(--mut);margin:10px 0 0;max-width:720px}
.cta{text-align:center}.cta .lead{margin:0 auto 28px}
footer{padding:36px 0;color:var(--mut);font-size:14px}footer .w{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between}
footer a{color:var(--mut);margin-right:18px}
.doc{padding:56px 0;max-width:760px}.doc h1{font-size:38px}.doc h2{font-size:22px;margin-top:34px}.doc p,.doc li{color:#c9d0da}
.cookie{position:fixed;bottom:16px;left:16px;right:16px;max-width:560px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;display:none;gap:14px;align-items:center;z-index:9;font-size:14px}
.cookie.show{display:flex}.cookie .btn{padding:8px 16px;font-size:14px;white-space:nowrap}
@media(max-width:760px){.hero,.calc{grid-template-columns:1fr}nav a.h{display:none}section{padding:52px 0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}