:root{--bg:#fafaf7;--ink:#14181f;--muted:#5b6472;--line:#e4e6ea;--brand:#0f8a5f;--brand-d:#0b6e4c;--card:#fff;--soft:#eef7f2}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand-d)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.nav{position:sticky;top:0;background:rgba(250,250,247,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:5}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:800;font-size:20px;color:var(--ink);text-decoration:none;letter-spacing:-.3px}
.logo span{color:var(--brand)}
.nav nav a{margin-left:20px;color:var(--muted);text-decoration:none;font-size:15px}
.nav nav a:hover{color:var(--ink)}
.btn{display:inline-block;background:var(--brand);color:#fff!important;padding:12px 22px;border-radius:10px;font-weight:600;text-decoration:none;border:0}
.btn:hover{background:var(--brand-d)}
.btn.ghost{background:transparent;color:var(--ink)!important;border:1px solid var(--line)}
.hero{padding:72px 20px 56px}
.hero h1{font-size:clamp(32px,5vw,52px);line-height:1.1;margin:0 0 18px;letter-spacing:-1px;max-width:760px}
.hero p.lead{font-size:19px;color:var(--muted);max-width:620px;margin:0 0 28px}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap}
.note{font-size:14px;color:var(--muted);margin-top:14px}
.chat{margin-top:44px;background:var(--soft);border:1px solid #d5eadf;border-radius:16px;padding:22px;max-width:420px}
.bubble{background:#fff;border-radius:12px;padding:12px 14px;box-shadow:0 1px 2px rgba(0,0,0,.06);font-size:15px}
.bubble b{display:block;margin-bottom:4px}
.btns{display:flex;gap:8px;margin-top:10px}
.btns span{flex:1;text-align:center;padding:8px;border-radius:8px;background:#fff;border:1px solid #d5eadf;color:#0b6e4c;font-weight:600;font-size:14px}
section{padding:56px 0;border-top:1px solid var(--line)}
section h2{font-size:30px;margin:0 0 10px;letter-spacing:-.5px}
section .sub{color:var(--muted);margin:0 0 32px;max-width:640px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.card h3{margin:0 0 6px;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:15px}
.step{font-weight:800;color:var(--brand);font-size:14px;letter-spacing:.5px;margin-bottom:8px}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;max-width:780px}
.pname{margin:0 0 4px;font-size:20px}
.price.alt{border:1px solid var(--line)}
.price{background:var(--card);border:2px solid var(--brand);border-radius:18px;padding:30px}
.price .amt{font-size:48px;font-weight:800;letter-spacing:-1.5px}
.price .amt small{font-size:18px;font-weight:500;color:var(--muted)}
.price ul{padding-left:20px;margin:18px 0}
.price li{margin:6px 0}
.badge{display:inline-block;background:var(--soft);color:var(--brand-d);font-weight:700;font-size:13px;padding:4px 10px;border-radius:999px;margin-bottom:12px}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600}
details p{margin:10px 0 0;color:var(--muted)}
footer{border-top:1px solid var(--line);padding:32px 0;color:var(--muted);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer a{color:var(--muted);margin-right:16px}
.doc{padding:48px 0 64px;max-width:760px}
.doc h1{font-size:34px;letter-spacing:-.7px;margin:0 0 6px}
.doc h2{font-size:21px;margin:34px 0 8px}
.doc p,.doc li{color:#2a313c}
.doc .meta{color:var(--muted);font-size:14px;margin-bottom:28px}
@media(max-width:600px){.nav nav a.hide{display:none}.hero{padding-top:44px}}