:root{--ink:#14213d;--acc:#0f9d76;--soft:#f3f7f5;--mut:#5b6575}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:var(--ink);line-height:1.55}
a{color:var(--acc)}.w{max-width:980px;margin:0 auto;padding:0 20px}
header{padding:18px 0}header .w{display:flex;justify-content:space-between;align-items:center}.logo{font-weight:800;font-size:22px;text-decoration:none;color:var(--ink)}.logo span{color:var(--acc)}
.hero{padding:48px 0 32px}h1{font-size:clamp(30px,5vw,48px);line-height:1.1;margin:0 0 16px}.lead{font-size:19px;color:var(--mut);max-width:640px}
.btn{display:inline-block;background:var(--acc);color:#fff;padding:14px 22px;border-radius:10px;font-weight:700;text-decoration:none;border:0;font-size:16px;cursor:pointer}.btn.alt{background:#fff;color:var(--ink);border:2px solid var(--ink)}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
section{padding:44px 0}section.soft{background:var(--soft)}h2{font-size:30px;margin:0 0 18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}.card{background:#fff;border-radius:14px;padding:20px;box-shadow:0 2px 10px rgba(0,0,0,.06)}
.demo{background:#fff;border-radius:16px;box-shadow:0 6px 24px rgba(0,0,0,.08);padding:20px;max-width:620px}
.mail{background:#eef1f6;border-radius:12px;padding:12px 14px;margin:8px 0}.draft{background:#e6f6f0;border-radius:12px;padding:12px 14px;margin:8px 0;min-height:70px;white-space:pre-wrap}
.lbl{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--mut)}.ok{display:inline-block;margin-top:8px;background:var(--acc);color:#fff;border-radius:8px;padding:8px 14px;font-weight:700;opacity:.3;transition:.3s}.ok.on{opacity:1}
form{display:grid;gap:12px;max-width:520px}input,textarea{padding:13px;border:1px solid #cfd6df;border-radius:10px;font-size:16px;width:100%}
.price{font-size:34px;font-weight:800}.small{font-size:14px;color:var(--mut)}details{background:#fff;border-radius:12px;padding:14px 18px;margin:10px 0}summary{font-weight:700;cursor:pointer}
footer{padding:30px 0;color:var(--mut);font-size:14px}