:root{
  --bg:#f7f9ff; --text:#0b1022; --muted:#3a4066cc;
  --card:#ffffff; --line:#e6ebff; --brand:#2563eb; --brand2:#22d3ee; --wa:#25D366;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,Inter,Segoe UI,Arial,sans-serif}
.wrap{max-width:1080px;margin:0 auto;padding:20px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.brand{font-weight:800;letter-spacing:.3px}
.lang{display:flex;gap:8px}
.lang button{padding:8px 12px;border:1px solid var(--line);background:#eef3ff;color:#1e2a53;border-radius:10px;cursor:pointer}
.lang button.active{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border:0}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px}
.hero{background:linear-gradient(180deg,#fff, #f1f6ff);}
.hero h1{margin:0 0 6px;font-size:32px}
.hero p{margin:0 0 6px;color:var(--muted)}
.btn{display:inline-block;margin-top:10px;padding:12px 18px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;text-decoration:none;font-weight:700;border:0}
.grid{display:grid;gap:16px;margin-top:18px}
@media(min-width:900px){.grid{grid-template-columns:repeat(3,1fr)}}
.card h3{margin:0 0 6px}
.muted{color:var(--muted)}
input,select{width:100%;padding:12px;border-radius:10px;border:1px solid var(--line);background:#fff;color:#0b1022;margin:6px 0}
label.ck{display:flex;gap:8px;align-items:center;margin:6px 0;color:var(--muted)}
.status{margin-top:8px;font-size:14px;color:var(--muted)}
footer{margin:28px 0;color:var(--muted)}
/* chat / whatsapp */
.wa{position:fixed;left:16px;bottom:16px;height:44px;padding:0 14px;display:inline-flex;align-items:center;gap:8px;background:var(--wa);color:#fff;border-radius:28px;font:700 14px/1 Inter,system-ui;box-shadow:0 8px 18px rgba(37,211,102,.35);z-index:9999;text-decoration:none}
.chat-bubble{position:fixed;right:18px;bottom:18px;width:56px;height:56px;border-radius:50%;background:var(--brand);box-shadow:0 10px 22px rgba(37,99,235,.35);color:#fff;display:grid;place-items:center;font:700 18px Inter,system-ui;cursor:pointer;z-index:9999}
.chat-box{position:fixed;right:18px;bottom:84px;width:340px;max-height:70vh;background:#fff;border:1px solid var(--line);border-radius:16px;color:#0b1022;font:14px Inter,system-ui;display:none;flex-direction:column;overflow:hidden;z-index:9999}
.chat-head{padding:12px 14px;background:linear-gradient(135deg,var(--brand),var(--brand2));font-weight:800;color:#fff}
.chat-log{padding:12px;overflow:auto;flex:1}
.chat-form{display:flex;gap:8px;padding:12px;background:#f5f8ff;border-top:1px solid var(--line)}
.chat-input{flex:1;padding:10px;border-radius:10px;border:1px solid var(--line);background:#fff;color:#0b1022}