:root{--ink:#172033;--muted:#687386;--brand:#6d4aff;--bg:#f6f7fb;--card:#fff;--line:#e8eaf1}*{box-sizing:border-box}body{margin:0;font:16px/1.5 Inter,system-ui,Arial;color:var(--ink);background:var(--bg)}a{text-decoration:none;color:inherit}.top{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 max(5vw,24px);background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.brand{font-size:24px;font-weight:900;color:var(--brand)}nav{display:flex;gap:24px;align-items:center}.btn{display:inline-flex;justify-content:center;align-items:center;background:var(--brand);color:#fff;border:0;border-radius:12px;padding:13px 20px;font-weight:800;cursor:pointer}.btn.small{padding:9px 14px}.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}.btn.full{width:100%}.hero{min-height:650px;display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center;padding:72px max(6vw,28px)}.hero h1{font-size:clamp(42px,6vw,76px);line-height:1.02;margin:18px 0}.hero p,.lead{color:var(--muted);font-size:19px}.pill{display:inline-block;padding:8px 12px;border-radius:30px;background:#ebe7ff;color:var(--brand);font-weight:800}.actions{display:flex;gap:12px;margin-top:28px}.mock{background:#151827;color:#fff;border-radius:24px;padding:20px;box-shadow:0 30px 80px #2b24522e;transform:rotate(1deg)}.mockbar{color:#aeb4c8;padding-bottom:18px}.cards,.chat{background:#222638;border-radius:16px;padding:20px;margin-top:14px}.cards strong{font-size:38px;display:block}.cards span{color:#6ee7b7}.chat p{background:#30364e;padding:12px;border-radius:12px}.chat .answer{background:#6046d8;margin-left:30px}.section{padding:80px max(6vw,28px)}.section h2{font-size:40px;margin:0 0 10px}.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:35px}.plan{background:#fff;border:1px solid var(--line);padding:28px;border-radius:20px}.plan.featured{border:2px solid var(--brand);transform:translateY(-8px)}.price{font-size:30px;font-weight:900;margin:15px 0}.price small{font-size:14px;color:var(--muted)}ul{padding:0;list-style:none;min-height:125px}.plan li{margin:9px 0;color:var(--muted)}.alt{background:#171a29;color:#fff;display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}.alt p{color:#bdc2d4}.demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.demo-grid div{background:#262a3d;padding:28px;border-radius:16px;font-size:20px;font-weight:800}footer{text-align:center;padding:35px;color:var(--muted)}.auth{min-height:100vh;display:grid;place-items:center;padding:24px}.authbox{width:min(100%,520px);background:#fff;padding:36px;border-radius:22px;box-shadow:0 20px 70px #25233a18}.authbox h1{font-size:34px;margin-bottom:6px}.authbox form{display:grid;gap:16px;margin-top:24px}label{display:grid;gap:7px;font-weight:700}input,select{width:100%;padding:13px;border:1px solid #d9dce6;border-radius:10px;font:inherit}.error,.notice{padding:12px;border-radius:10px;background:#fff0f0;color:#a52323}.notice{background:#edfff5;color:#18794e}@media(max-width:900px){nav a:not(.btn){display:none}.hero,.alt{grid-template-columns:1fr}.plans{grid-template-columns:1fr 1fr}.hero{padding-top:45px}}@media(max-width:560px){.plans{grid-template-columns:1fr}.hero h1{font-size:44px}.actions{flex-direction:column}}