:root{
  --teal:#13535A;
  --teal-dark:#0F4147;
  --bg:#FEF7EC;
  --orange:#DC704B;
  --green:#87956F;
  --blue:#87A9B6;
  --text:#1F3F43;
  --muted:#6C7C7F;
  --white:#FFFDF8;
  --line:rgba(19,83,90,.16);
  --shadow:0 16px 45px rgba(19,83,90,.09);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,sans-serif;line-height:1.55}
button,textarea{font:inherit}
button{cursor:pointer}

.topbar{min-height:82px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:12px 5vw;background:rgba(254,247,236,.96);position:sticky;top:0;z-index:10;backdrop-filter:blur(10px)}
.brand{display:flex;align-items:center;gap:12px}.brand-logo{width:50px;height:50px;object-fit:contain}.brand-title{font-weight:700;color:var(--teal)}.brand-sub{font-size:13px;color:#718083;margin-top:3px}.badge{font-size:12px;font-weight:600;border:1px solid var(--line);border-radius:999px;padding:7px 11px;background:#fff8}

.shell{width:min(1040px,90vw);margin:0 auto;padding:54px 0 72px}.hero{max-width:900px}.eyebrow{color:var(--orange);font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:13px}h1,h2{font-family:Lora,Georgia,serif;color:var(--teal);margin:12px 0 16px}h1{font-size:clamp(40px,6vw,64px);line-height:1.06}h2{font-size:30px}.lead{font-size:18px;line-height:1.7;max-width:880px;color:#37595D}.notice{border-left:4px solid var(--blue);background:rgba(135,169,182,.11);padding:16px 18px;border-radius:10px;margin:24px 0}.privacy-notice{max-width:900px}

.workspace{margin-top:34px;border:1px solid var(--line);background:rgba(255,253,248,.92);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}.chat-head{padding:18px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px;background:rgba(255,255,255,.35)}.chat-title{font-weight:700;color:var(--teal);font-size:17px}.chat-status{font-size:12px;color:var(--muted);margin-top:3px}

.chat{height:min(58vh,620px);min-height:430px;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:18px;scroll-behavior:smooth}.message{display:flex;gap:11px;align-items:flex-start;max-width:88%}.message.user-message{align-self:flex-end;flex-direction:row-reverse}.avatar{width:34px;height:34px;flex:0 0 34px;border-radius:50%;display:grid;place-items:center;background:var(--teal);color:white;font-size:11px;font-weight:700}.user-message .avatar{background:var(--orange)}.bubble{border:1px solid var(--line);border-radius:16px;padding:14px 16px;background:white;box-shadow:0 5px 18px rgba(19,83,90,.04);white-space:pre-wrap;overflow-wrap:anywhere}.assistant-message .bubble{border-top-left-radius:5px}.user-message .bubble{border-top-right-radius:5px;background:rgba(220,112,75,.07)}.bubble p{margin:8px 0 0}.bubble strong{color:var(--teal)}

.typing{display:flex;align-items:center;gap:5px;padding:0 24px 12px;color:var(--muted);font-size:12px}.typing span{width:7px;height:7px;border-radius:50%;background:var(--blue);animation:pulse 1.1s infinite}.typing span:nth-child(2){animation-delay:.15s}.typing span:nth-child(3){animation-delay:.3s}.typing em{font-style:normal;margin-left:5px}@keyframes pulse{0%,60%,100%{opacity:.35;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}

.composer{border-top:1px solid var(--line);padding:16px 18px;background:rgba(254,247,236,.55)}textarea{width:100%;resize:vertical;min-height:105px;max-height:260px;border:1px solid rgba(19,83,90,.23);border-radius:14px;padding:14px 15px;background:white;color:var(--text);outline:none;line-height:1.55}textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(135,169,182,.16)}textarea::placeholder{color:#8B989A}.composer-foot{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:11px}.hint{font-size:12px;color:var(--muted)}

.btn{border:0;border-radius:12px;padding:12px 18px;font-weight:600;transition:.15s ease}.btn:hover{transform:translateY(-1px)}.btn:disabled{opacity:.55;cursor:wait;transform:none}.btn.primary{background:var(--orange);color:white}.btn.secondary{background:transparent;color:var(--teal);border:1px solid var(--line)}

.how-it-works{margin-top:50px}.steps{display:grid;grid-template-columns:1fr 1fr;gap:14px}.step{display:flex;gap:13px;padding:17px;border:1px solid var(--line);background:rgba(255,253,248,.67);border-radius:15px}.step>span{width:30px;height:30px;flex:0 0 30px;border-radius:50%;background:rgba(135,149,111,.18);display:grid;place-items:center;color:var(--teal);font-weight:700}.step p{margin:4px 0 0;color:var(--muted);font-size:14px}.step strong{color:var(--teal)}

.error-message .bubble{border-color:rgba(183,80,54,.28);background:rgba(183,80,54,.06)}
footer{border-top:1px solid var(--line);padding:22px 5vw 36px;text-align:center;color:var(--muted);font-size:12px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@media(max-width:760px){.shell{width:92vw;padding-top:36px}.brand-sub{display:none}.chat{height:60vh;min-height:420px;padding:18px}.message{max-width:96%}.steps{grid-template-columns:1fr}.composer-foot{align-items:flex-end}.hint{max-width:58%}}
@media(max-width:520px){.brand-title{font-size:13px}.brand-logo{width:42px;height:42px}.badge{display:none}h1{font-size:39px}.lead{font-size:16px}.chat-head{align-items:flex-start}.chat-status{max-width:210px}.composer-foot{flex-direction:column;align-items:stretch}.hint{max-width:none}.btn.primary{width:100%}}