:root{
  --green-900:#0f3b28; --green-800:#14452f; --green-700:#1d5a3f; --green-100:#e3efe7;
  --orange:#c2571a; --orange-dark:#a54612; --orange-100:#fbe9dc;
  --cream:#faf7f0; --paper:#ffffff; --ink:#1c2a22; --muted:#5f6e65; --line:#e6e2d6;
  --radius:14px; --shadow:0 1px 2px rgba(20,40,30,.06),0 8px 24px rgba(20,40,30,.06);
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{font-family:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--cream);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}

/* nav */
.nav{position:sticky;top:0;z-index:20;background:rgba(250,247,240,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:20px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;line-height:1.1}
.brand small{display:block;font-weight:500;font-size:11px;color:var(--muted)}
.brand .logo{width:34px;height:34px;border-radius:50%;background:var(--green-800);display:grid;place-items:center}
.nav ul{display:flex;gap:6px;list-style:none;margin-left:auto}
.nav ul a{padding:7px 12px;border-radius:999px;font-size:14px;font-weight:600;color:var(--muted)}
.nav ul a:hover,.nav ul a.on{background:var(--green-800);color:#fff}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;padding:5px 10px;border-radius:999px;background:var(--green-100);color:var(--green-800)}
.dot{width:7px;height:7px;border-radius:50%;background:#2fa563}
.dot.off{background:#c0392b}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;cursor:pointer;font:inherit;font-weight:700;font-size:15px;padding:12px 20px;border-radius:10px;transition:transform .12s,background .12s}
.btn:hover{transform:translateY(-1px)}
.btn-green{background:var(--green-800);color:#fff}.btn-green:hover{background:var(--green-900)}
.btn-orange{background:var(--orange);color:#fff}.btn-orange:hover{background:var(--orange-dark)}
.btn-ghost{background:#efeadd;color:var(--ink)}
.btn-sm{padding:8px 14px;font-size:13px}

/* hero */
.hero{padding:56px 0 40px;background:radial-gradient(900px 400px at 85% 10%,#f0e8d3 0,transparent 60%)}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.eyebrow{font-size:11px;letter-spacing:.08em;font-weight:800;color:var(--orange);text-transform:uppercase}
.hero h1{font-size:clamp(34px,5vw,54px);line-height:1.08;font-weight:800;color:var(--green-800);margin:12px 0 16px}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero p.lead{color:var(--muted);max-width:520px;margin-bottom:24px}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px}
.stats{display:flex;gap:22px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.stats b{display:block;color:var(--ink);font-size:15px}
.seal{justify-self:center;width:min(340px,80vw);aspect-ratio:1;border-radius:50%;background:#fff;box-shadow:var(--shadow);display:grid;place-items:center;padding:18px}

/* sections */
section{padding:48px 0}
.sec-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:24px;flex-wrap:wrap}
.sec-head h2{font-size:28px;color:var(--green-800);line-height:1.2}
.sec-head p{color:var(--muted);max-width:420px;font-size:14px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.card .ico{width:40px;height:40px;border-radius:10px;background:var(--green-800);color:#fff;display:grid;place-items:center;margin-bottom:12px}
.card h3{font-size:16px;margin-bottom:6px;color:var(--green-800)}
.card p{font-size:14px;color:var(--muted)}
.faq-card{cursor:pointer;transition:transform .12s,border-color .12s}
.faq-card:hover{transform:translateY(-2px);border-color:var(--orange)}
.faq-card .tag{font-size:11px;font-weight:700;color:var(--orange)}
.faq-card q{display:block;font-weight:700;margin:6px 0 12px;quotes:"“" "”"}
.faq-card span.go{font-size:12px;font-weight:700;color:var(--green-800)}
.banner{background:linear-gradient(135deg,var(--green-900),var(--green-700));color:#fff;border-radius:20px;padding:36px;display:flex;gap:24px;justify-content:space-between;align-items:center;flex-wrap:wrap}
.banner h2{font-size:26px;margin:6px 0}
.banner p{opacity:.85;max-width:480px;font-size:14px}
footer{border-top:1px solid var(--line);padding:32px 0;background:#f3efe4;font-size:13px;color:var(--muted)}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:30px}
footer h4{color:var(--ink);margin-bottom:8px;font-size:14px}
footer ul{padding:0}
footer li{list-style:none;margin:4px 0}
.disclaimer{background:#fff;border:1px solid var(--line);border-left:4px solid var(--orange);border-radius:10px;padding:12px 14px}
.copy{margin-top:22px;padding-top:14px;border-top:1px solid var(--line);font-size:12px}

/* chat page */
.chat-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;padding:18px 0 28px;align-items:start}
.chat-box{padding:0;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);display:flex;flex-direction:column;height:calc(100vh - 110px);min-height:520px}
.chat-top{display:flex;align-items:center;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line)}
.avatar{width:38px;height:38px;border-radius:50%;background:var(--green-800);color:#fff;display:grid;place-items:center;flex:none}
.chat-top h1{font-size:16px;line-height:1.2}
.chat-top small{color:var(--muted);font-size:12px}
.chat-top .right{margin-left:auto}
.chips{display:flex;gap:8px;flex-wrap:wrap;padding:10px 16px;border-bottom:1px solid var(--line)}
.chip{border:1px solid var(--line);background:#fff;border-radius:999px;font:inherit;font-size:12.5px;font-weight:600;padding:6px 12px;cursor:pointer;color:var(--green-800)}
.chip:hover{border-color:var(--orange);background:var(--orange-100)}
.msgs{flex:1;overflow-y:auto;padding:18px 16px;display:flex;flex-direction:column;gap:14px;background:#fdfcf8}
.msg{display:flex;gap:10px;max-width:88%}
.msg.user{align-self:flex-end;flex-direction:row-reverse}
.bubble{padding:11px 14px;border-radius:14px;font-size:14.5px;border:1px solid var(--line);background:#fff;overflow-wrap:anywhere}
.msg.user .bubble{background:var(--green-800);color:#fff;border-color:var(--green-800)}
.msg.bot .bubble{border-top-left-radius:4px}
.bubble ul{padding-left:18px;margin:6px 0}
.meta{font-size:11px;color:var(--muted);margin-top:4px}
.kw{display:inline-block;font-size:11px;font-weight:700;background:var(--green-100);color:var(--green-800);padding:2px 8px;border-radius:999px;margin:8px 4px 0 0}
details.src{margin-top:10px;font-size:12.5px}
details.src summary{cursor:pointer;font-weight:700;color:var(--orange)}
details.src li{margin:6px 0;color:var(--muted)}
details.src b{color:var(--ink)}
.typing span{display:inline-block;width:6px;height:6px;margin-right:3px;border-radius:50%;background:var(--muted);animation:b 1s infinite}
.typing span:nth-child(2){animation-delay:.15s}.typing span:nth-child(3){animation-delay:.3s}
@keyframes b{0%,60%,100%{opacity:.25;transform:none}30%{opacity:1;transform:translateY(-3px)}}
.composer{display:flex;gap:10px;padding:12px 16px;border-top:1px solid var(--line)}
.composer input{flex:1;font:inherit;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;outline:none}
.composer input:focus{border-color:var(--green-700);box-shadow:0 0 0 3px var(--green-100)}
.tip{font-size:11.5px;color:var(--muted);padding:0 16px 12px}
.side{display:flex;flex-direction:column;gap:14px}
.tg{background:linear-gradient(160deg,var(--green-900),var(--green-700));color:#fff;border-radius:var(--radius);padding:18px}
.tg h3{font-size:16px;margin:4px 0 6px}
.tg p{font-size:13px;opacity:.88;margin-bottom:14px}
.tg ol{font-size:12.5px;padding-left:18px;margin:12px 0 0;opacity:.9}
.tg .btn{width:100%;justify-content:center}
.note{font-size:12.5px;color:var(--muted)}
.note b{color:var(--ink)}

@media(max-width:860px){
  .hero .wrap,.grid3,footer .cols,.chat-layout{grid-template-columns:1fr}
  .nav ul{display:none}
  .seal{order:-1;width:220px}
  .chat-box{height:auto;min-height:70vh}
  .msgs{min-height:340px;max-height:60vh}
  .banner{padding:24px}
}