:root{
  --primary:#2B5DF9;
  --primary-hover:#1f4bcc;
  --text:#0f172a;
  --muted:#64748b;
  --bg:#f8fafc;
  --card:#ffffff;
  --border:#dbe3ef;
  --ok:#059669;
  --warn:#d97706;
  --danger:#dc2626;
  --max:1100px;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#f8fbff 0%, #f6f8fb 100%);
}
a{color:inherit}
.page{max-width:var(--max);margin:0 auto;padding:20px}
.top{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-bottom:24px;
}
.brand{font-weight:800;letter-spacing:.05em;color:var(--primary);text-decoration:none}
.back{
  text-decoration:none;border:1px solid var(--border);padding:10px 14px;border-radius:12px;background:#fff
}
h1{font-size:clamp(28px,5vw,42px);margin:6px 0 10px}
.lead{color:var(--muted);margin:0 0 24px}
.layout{display:grid;grid-template-columns:1fr;gap:16px}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;
  box-shadow:0 8px 24px rgba(21,32,55,.05);
}
label{display:block;font-size:14px;color:#334155;margin-bottom:8px}
textarea,input,select{
  width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--border);
  font:inherit;background:#fff;color:var(--text)
}
textarea{min-height:170px;resize:vertical}
.row{display:grid;grid-template-columns:1fr;gap:12px}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
button{
  border:none;background:var(--primary);color:#fff;padding:10px 14px;border-radius:12px;
  font:inherit;cursor:pointer
}
button.secondary{background:#fff;color:var(--primary);border:1px solid var(--primary)}
button:hover{background:var(--primary-hover)}
button.secondary:hover{background:#eef3ff}
.mono{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  background:#f8fafc;border:1px solid var(--border);border-radius:12px;padding:12px;word-break:break-all
}
.grid-cards{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px
}
.tool-link{
  background:#fff;border:1px solid var(--border);padding:16px;border-radius:14px;text-decoration:none;
  display:block;transition:transform .15s ease,box-shadow .15s ease
}
.tool-link:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(21,32,55,.08)}
.badge{display:inline-block;font-size:12px;padding:4px 8px;border-radius:999px;background:#eef3ff;color:#1e40af}
.note{font-size:13px;color:var(--muted);margin-top:10px}
.status{font-size:14px;margin-top:8px}
.status.ok{color:var(--ok)} .status.warn{color:var(--warn)} .status.err{color:var(--danger)}
@media (min-width:900px){ .layout.two{grid-template-columns:1fr 1fr;} }