:root{
  --bg:#0b1226;
  --card:#ffffff;
  --accent:#0b78a8;
  --muted:#6b7280;
}
*{box-sizing:border-box}
body{
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  margin:0;
  background:linear-gradient(180deg,#eef2f6 0%, #ffffff 100%);
  color:#0b1226;
  -webkit-font-smoothing:antialiased;
}
.container{max-width:900px;margin:0 auto;padding:24px}
.hero{background:linear-gradient(90deg, #e6f3fb 0%, #ffffff 100%);padding:32px 0;margin-bottom:18px;border-bottom:1px solid rgba(11,18,38,0.06)}
.hero h1{margin:0;font-size:28px;color:var(--bg)}
.tagline{color:var(--muted);margin-top:6px;margin-bottom:14px}
.actions{display:flex;gap:12px;align-items:center;margin-top:8px}
.actions input{flex:1;padding:12px;border-radius:8px;border:1px solid rgba(11,18,38,0.08);font-size:14px}
.actions button{background:var(--accent);color:white;padding:10px 14px;border-radius:8px;border:none;cursor:pointer;font-weight:600}
.note{color:var(--muted);font-size:13px;margin-top:8px}

.explain h2{margin-top:6px}
.explain p{color:var(--muted)}

.suggestions{margin-top:18px;background:var(--card);padding:16px;border-radius:10px;box-shadow:0 6px 20px rgba(11,18,38,0.04)}
.list{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.suggestion{display:flex;justify-content:space-between;align-items:center;padding:10px;border-radius:8px;background:linear-gradient(180deg,#fbfdff,#ffffff)}
.suggestion .text{flex:1;margin-right:12px;color:#052036}
.suggestion button{background:transparent;border:1px solid rgba(11,18,38,0.06);padding:6px 8px;border-radius:6px;cursor:pointer}
.suggestion .edit{color:var(--accent);font-weight:600}
.howto{margin-top:18px;color:var(--muted);background:#fff;padding:12px;border-radius:8px}

.footer{margin-top:18px;padding:10px;text-align:center;color:var(--muted);font-size:13px}

/* responsive */
@media (max-width:600px){
  .actions{flex-direction:column;align-items:stretch}
  .actions button{width:100%}
}