:root{
  --bg: #fffdf8;
  --panel: #ffffff;
  --muted: #f3f6ff;
  --text: #1f2937;
  --subtle: #6b7280;
  --border: #e5e7eb;
  --brand: #2a6fdb;
  --brand2:#16a34a;
  --accent:#f97316;
  --shadow: 0 10px 25px rgba(17,24,39,.06);
  --radius: 18px;
  --max: 1120px;
  --focus: 0 0 0 3px rgba(42,111,219,.25);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 500px at 10% 0%, #eef6ff 0%, rgba(238,246,255,0) 60%),
              radial-gradient(900px 500px at 90% 10%, #fff2e6 0%, rgba(255,242,230,0) 55%),
              var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max); margin:0 auto; padding: 18px 16px 70px;}
.topbar{
  display:flex; align-items:center; justify-content:space-between;
  gap:12px; padding: 14px 16px; background: rgba(255,255,255,.7);
  border:1px solid var(--border); border-radius: var(--radius);
  backdrop-filter: blur(8px); box-shadow: var(--shadow);
  position: sticky; top: 12px; z-index: 20;
}
.brand{
  display:flex; gap:10px; align-items:center;
  min-width: 220px;
}
.logo{
  width:38px;height:38px;border-radius: 12px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand2) 65%, var(--accent) 110%);
  display:grid; place-items:center; color:#fff; font-weight:800;
  box-shadow: 0 12px 24px rgba(42,111,219,.18);
}
.brand h1{font-size: 16px; margin:0}
.brand p{font-size: 12px; margin:0; color: var(--subtle)}
nav{display:flex; flex-wrap:wrap; gap: 8px; justify-content:flex-end}
nav a{
  display:inline-flex; align-items:center; gap:6px;
  padding: 9px 11px; border:1px solid transparent;
  border-radius: 999px; color: var(--text);
  background: transparent;
  font-size: 14px;
}
nav a:hover{background: #ffffff}
nav a.is-active{border-color: var(--border); background: #ffffff}
nav a:focus{outline:none; box-shadow: var(--focus)}

.hero{
  margin-top: 18px;
  display:grid; grid-template-columns: 1.1fr .9fr; gap: 14px;
  align-items:stretch;
}
.card{
  background: rgba(255,255,255,.85);
  border:1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero .left{padding: 22px}
.hero .right{padding: 18px}
.kicker{
  display:inline-flex; gap:8px; align-items:center;
  padding: 6px 10px; border-radius: 999px;
  background: var(--muted); border:1px solid #dbeafe;
  color: #1d4ed8; font-size: 12px; font-weight: 600;
}
h2{margin: 12px 0 8px; font-size: 34px; line-height:1.15}
.lead{margin: 0 0 14px; color: var(--subtle); font-size: 16px}
.cta{display:flex; flex-wrap:wrap; gap: 10px; margin-top: 10px}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 10px 14px; border-radius: 12px;
  border:1px solid var(--border);
  background:#fff; color: var(--text);
  font-weight: 650;
  box-shadow: 0 10px 20px rgba(17,24,39,.04);
}
.btn.primary{background: linear-gradient(135deg, #2a6fdb 0%, #3b82f6 100%); color:#fff; border-color: transparent}
.btn:focus{outline:none; box-shadow: var(--focus)}
.grid{
  margin-top: 16px;
  display:grid; gap: 12px;
  grid-template-columns: repeat(3, 1fr);
}
.mini{
  padding: 16px;
}
.mini h3{margin:0 0 6px; font-size: 16px}
.mini p{margin:0; color: var(--subtle); font-size: 13px}
.pill{
  display:inline-flex; align-items:center; gap:6px;
  padding: 5px 9px; border-radius: 999px;
  border:1px solid var(--border);
  background:#fff;
  font-size: 12px;
  color: var(--subtle);
}
.section{margin-top: 18px}
.section h3{margin: 0 0 10px; font-size: 18px}
.list{
  display:grid; gap:10px;
  grid-template-columns: repeat(2, 1fr);
}
.item{padding: 14px}
.item h4{margin:0 0 6px}
.item p{margin:0; color: var(--subtle); font-size: 13px}
.footer{
  margin-top: 26px;
  padding: 18px;
  display:flex; flex-wrap:wrap; gap: 10px;
  align-items:center; justify-content:space-between;
}
.fine{color: var(--subtle); font-size: 12px}
.footer a{color: var(--subtle)}
.sep{height:1px;background:var(--border);margin-top:18px}

/* Tools */
.toolbox{padding: 18px}
.toolbox h2{font-size: 26px}
label{display:block; font-size: 13px; color: var(--subtle); margin: 10px 0 6px}
input, select, textarea{
  width:100%; padding:10px 12px; border-radius: 12px;
  border:1px solid var(--border); background:#fff;
  font-size: 14px; color: var(--text);
}
textarea{min-height: 120px; resize: vertical}
.row{display:grid; grid-template-columns: 1fr 1fr; gap: 10px}
.out{
  margin-top: 12px; padding: 12px; border-radius: 12px;
  background: #fff; border:1px dashed #cbd5e1; color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  white-space: pre-wrap;
}

/* Responsive */
@media (max-width: 920px){
  .hero{grid-template-columns: 1fr}
  .grid{grid-template-columns: 1fr}
  .list{grid-template-columns: 1fr}
  h2{font-size: 28px}
  .brand{min-width: auto}
}