:root{
  --bg:#f7f9ff;--panel:#fff;--soft:#f8fbff;--line:#d9e3f4;--text:#11284a;--muted:#647c9e;
  --primary:#325dff;--secondary:#6e6bff;--teal:#19c8b3;--coral:#ff8c68;--shadow:0 18px 45px rgba(50,93,255,.08)
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,"Segoe UI",Tahoma,sans-serif;background:radial-gradient(circle at 0 0,rgba(25,200,179,.12),transparent 24%),radial-gradient(circle at 100% 10%,rgba(110,107,255,.12),transparent 26%),linear-gradient(180deg,#fbfcff,#eef4ff);color:var(--text);min-height:100vh}
a{text-decoration:none;color:inherit}button,input,textarea,select{font:inherit}
header.app-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:16px 24px;display:flex;justify-content:space-between;gap:16px;align-items:center}
.brand-lock{display:flex;align-items:center;gap:14px}.logo-dot{width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;display:grid;place-items:center;font-weight:900;box-shadow:0 14px 32px rgba(50,93,255,.22)}
.brand-lock h1{font-size:24px;margin:0}.brand-lock p{margin:3px 0 0;color:var(--muted);font-size:13px}.app-nav{display:flex;gap:8px;flex-wrap:wrap}.app-nav a{padding:10px 13px;border:1px solid var(--line);background:#fff;border-radius:14px;color:var(--muted);font-weight:800}.app-nav a:hover{color:var(--text);background:#f4f7ff}
main{max-width:1240px;margin:0 auto;padding:22px 20px 42px}.hero{background:linear-gradient(135deg,#fff,#f5f8ff);border:1px solid var(--line);border-radius:28px;padding:24px;margin-bottom:18px;box-shadow:var(--shadow);display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:center}.hero h2{font-size:40px;line-height:1.15;margin:0 0 10px}.accent{background:linear-gradient(135deg,var(--teal),var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent}.hero p{color:var(--muted);line-height:1.85;font-size:17px}.hero .badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.badge{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--muted);font-size:13px;font-weight:800}
.hero-preview{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.preview-card,.panel,.metric-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px;box-shadow:var(--shadow)}.preview-card strong,.metric-card strong{display:block;font-size:26px;margin-top:6px}.soft{color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.panel h2,.panel h3{margin:0 0 12px}.panel p{color:var(--muted);line-height:1.8}.panel-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;margin:6px 6px 6px 0;padding:11px 15px;border:0;border-radius:13px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-weight:800;cursor:pointer}.btn.secondary,button.secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
input,textarea,select{width:100%;background:#fff;color:var(--text);border:1px solid #c8d6ee;border-radius:13px;padding:12px;margin:6px 0}textarea{min-height:100px}label{display:block;color:var(--muted);font-weight:800;margin-top:8px}
pre{direction:ltr;text-align:left;white-space:pre-wrap;background:#11234a;color:#dbe8ff;border:1px solid #1d3770;border-radius:16px;padding:14px;max-height:560px;overflow:auto;box-shadow:var(--shadow)}.msg{padding:14px;border-radius:16px;border:1px solid var(--line);background:#fff}.user{background:#e8efff}.assistant{background:#eafbf6}.chatbox{display:grid;gap:12px}.footer-note{margin-top:22px;padding:16px;text-align:center;color:#8d533f;background:rgba(255,140,104,.08);border:1px solid rgba(255,140,104,.18);border-radius:18px}.screen-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.screen-row .metric-card{min-height:112px}.cta-strip{margin:20px 0;background:linear-gradient(135deg,#184ccf,#6e6bff);color:#fff;border-radius:26px;padding:24px;box-shadow:0 24px 60px rgba(50,93,255,.2)}.cta-strip p{color:rgba(255,255,255,.9)}
@media(max-width:960px){header.app-header,.hero{grid-template-columns:1fr;display:grid}.hero-preview,.grid-2,.grid-3,.grid-4,.screen-row{grid-template-columns:1fr}.app-nav{justify-content:flex-start}}