:root{
  --brand:#ff9800;
  --brand-600:#fb8c00;
  --bg:#ffffff;
  --text:#1a1a1a;
  --muted:#666a70;
  --border:#e8ebef;
  --card:#f7f8fa;
  --radius:16px;
  --shadow:0 8px 24px rgba(0,0,0,.08);
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
a{color:var(--text);text-decoration:none}
.container{max-width:1160px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;gap:10px;align-items:center;font-weight:800;font-size:18px}
.brand .accent{color:var(--brand)}
.logo{width:34px;height:34px}
.menu{display:flex;gap:18px;align-items:center}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;border:1px solid var(--border);background:#fff}
.btn-cta{background:var(--brand);border-color:var(--brand);color:#111;box-shadow:0 8px 18px rgba(255,152,0,.35);font-weight:700}
.btn-cta:hover{background:var(--brand-600)}
.hero{padding:90px 0;background:linear-gradient(180deg,#fff 0%, #f9fafc 100%);border-bottom:1px solid var(--border)}
.hero h1{font-size:clamp(30px,5vw,54px);line-height:1.06;margin:0 0 12px}
.hero p{font-size:clamp(16px,2.4vw,20px);color:var(--muted);max-width:760px}
.actions{margin-top:22px;display:flex;gap:12px;flex-wrap:wrap}
.section{padding:72px 0}
.kicker{color:var(--brand);font-weight:800;font-size:13px;letter-spacing:.24em;text-transform:uppercase}
.h2{font-size:clamp(24px,3.6vw,36px);margin:8px 0 10px}
.sub{color:var(--muted);max-width:760px}
.grid{display:grid;gap:18px}
@media (min-width:860px){.grid.cols-3{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card h3{margin:6px 0 8px}
.benefits{display:grid;gap:18px}
@media (min-width:860px){.benefits{grid-template-columns:repeat(3,1fr)}}
form{display:grid;gap:12px}
label{font-weight:600}
input,textarea{width:100%;padding:14px 14px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--text)}
textarea{min-height:140px;resize:vertical}
.alert{border-radius:12px;padding:14px 16px}
.alert.ok{background:#e8f8ef;border:1px solid #b7e4c5}
.alert.err{background:#ffefef;border:1px solid #ffc9c9}
.site-footer{padding:38px 0;border-top:1px solid var(--border);background:#fff;color:#444}
.foot{display:flex;gap:18px;flex-wrap:wrap;justify-content:space-between;align-items:center}
ul{padding-left:18px}
.hidden{position:absolute;left:-9999px;opacity:0}