:root{--bg:#f6f8fc;--text:#0b1220;--muted:#4b5565;--border:rgba(12,24,46,.10);--shadow:0 10px 30px rgba(12,24,46,.10);--shadow2:0 18px 60px rgba(12,24,46,.14);--brand:#2563eb;--r:22px}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;color:var(--text);
background:radial-gradient(900px 600px at 10% 10%, rgba(37,99,235,.10), transparent 55%),radial-gradient(800px 520px at 90% 20%, rgba(34,197,94,.08), transparent 55%),linear-gradient(180deg,var(--bg),#fff);overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:980px;margin:0 auto;padding:18px 16px 60px}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;position:sticky;top:0;z-index:50;background:linear-gradient(180deg,rgba(246,248,252,.96),rgba(246,248,252,.78),rgba(246,248,252,0));backdrop-filter:blur(10px);padding:10px 0}
.back{padding:10px 12px;border-radius:14px;border:1px solid var(--border);background:rgba(255,255,255,.78);box-shadow:var(--shadow)}
.lang{display:inline-flex;gap:8px;align-items:center;padding:6px;border:1px solid var(--border);border-radius:999px;background:rgba(255,255,255,.75);box-shadow:var(--shadow)}
.lang button{border:0;background:transparent;color:var(--muted);padding:8px 10px;border-radius:999px;cursor:pointer}
.lang button.active{background:rgba(37,99,235,.10);color:var(--text)}
.shell{margin-top:12px;border:1px solid var(--border);border-radius:var(--r);background:rgba(255,255,255,.82);box-shadow:var(--shadow2);overflow:hidden}
.progress{display:flex;gap:8px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--border)}
.dot{
width:11px;height:11px;border-radius:999px;
background:rgba(11,18,32,.12);
border:1px solid rgba(11,18,32,.14);
box-shadow: inset 0 1px 0 rgba(255,255,255,.65);
transition: transform .18s ease, background .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.dot.on{
background: linear-gradient(135deg, rgba(37,99,235,.92), rgba(123,92,255,.88));
border-color: rgba(37,99,235,.45);
box-shadow: 0 10px 24px rgba(37,99,235,.22), inset 0 1px 0 rgba(255,255,255,.30);
transform: scale(1.08);
}
.header{padding:18px 16px 8px}
.header h1{margin:0;font-size:24px;letter-spacing:-.3px}
.header p{margin:8px 0 0;color:var(--muted);line-height:1.6}
.stage{position:relative;padding:16px;min-height:340px}

@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
}
@keyframes panelIn{
  from{opacity:0;transform:translateY(10px) scale(.99);filter: blur(2px)}
  to{opacity:1;transform:translateY(0) scale(1);filter: blur(0)}
}
.panel.on.animate-in{animation: panelIn .38s cubic-bezier(.2,.8,.2,1) both;}

.panel{position:absolute;inset:0;padding:16px;opacity:0;transform:translateX(18px);pointer-events:none;transition:opacity .35s ease,transform .35s ease}
.panel.on{opacity:1;transform:translateX(0);pointer-events:auto}
.grid{display:grid;grid-template-columns:1fr;gap:12px;margin-top:8px}
.field{border:1px solid var(--border);border-radius:16px;background:rgba(255,255,255,.78);padding:12px;box-shadow:var(--shadow)}
.field label{display:block;font-weight:800;font-size:13px}
.field input{width:100%;margin-top:8px;border:1px solid rgba(12,24,46,.12);border-radius:14px;padding:12px;font-size:14px;outline:none;background:#fff}
.pills{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.choice{border:1px solid var(--border);border-radius:999px;padding:10px 12px;background:rgba(255,255,255,.78);box-shadow:var(--shadow);cursor:pointer;user-select:none;transition:transform .18s ease, box-shadow .18s ease}
.choice:hover{transform:translateY(-1px);box-shadow:0 14px 34px rgba(12,24,46,.16)}
.choice.on{border-color:rgba(37,99,235,.35);background:rgba(37,99,235,.08)}
.actions{display:flex;gap:10px;flex-wrap:wrap;padding:14px 16px;border-top:1px solid var(--border);background:rgba(255,255,255,.86)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 16px;border-radius:14px;
  border:1px solid rgba(11,18,32,.12);
  background:linear-gradient(180deg, rgba(255,255,255,.88), rgba(255,255,255,.68));
  color:var(--text); text-decoration:none; font-weight:750; letter-spacing:.1px;
  box-shadow: 0 10px 26px rgba(0,0,0,.08);
  transform: translateY(0);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease, filter .18s ease;
  -webkit-tap-highlight-color: transparent;
}
.btn.primary{
  border-color: rgba(37,99,235,.22);
  background:
    radial-gradient(140px 60px at 20% 20%, rgba(255,255,255,.26), transparent 60%),
    linear-gradient(135deg, rgba(37,99,235,.96), rgba(123,92,255,.92));
  color:#fff;
  position:relative;
  overflow:hidden;
}
.btn:disabled{opacity:.55;cursor:not-allowed}
.summary{border:1px solid var(--border);border-radius:16px;background:rgba(255,255,255,.78);padding:12px;box-shadow:var(--shadow);overflow:auto}
pre{margin:0;font-size:12.5px;line-height:1.55}
.note{margin-top:10px;color:var(--muted);font-size:13.5px;line-height:1.55}
@media (min-width:900px){.grid{grid-template-columns:1fr 1fr}.stage{min-height:300px}}
@media (max-width:520px){.header h1{font-size:20px}.btn{width:100%}}


.btn:hover{transform: translateY(-2px); box-shadow: 0 14px 34px rgba(0,0,0,.12); border-color: rgba(37,99,235,.28);}
.btn:active{transform: translateY(0px) scale(.99); box-shadow: 0 9px 22px rgba(0,0,0,.10);}
.btn:focus-visible{outline: none; box-shadow: 0 0 0 4px rgba(37,99,235,.22), 0 14px 34px rgba(0,0,0,.12); border-color: rgba(37,99,235,.38);}
.btn.primary::after{
  content:"";
  position:absolute; inset:-2px;
  background:linear-gradient(120deg, transparent 0%, rgba(255,255,255,.35) 35%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .55s ease;
  pointer-events:none;
}
.btn.primary:hover::after{transform: translateX(120%);}


/* v2 flow helpers */
.body{padding:22px 22px 26px}
h1{margin:0 0 8px;font-size:26px;letter-spacing:-.02em}
h2{margin:18px 0 10px;font-size:18px}
.sub{margin:0 0 18px;color:var(--muted);font-size:14px}

.row{margin:14px 0}
.row label{display:flex;align-items:baseline;justify-content:space-between;gap:10px;font-size:13px;color:var(--muted);margin:0 0 8px}
.row label .hint{font-size:12px;color:var(--muted);opacity:.9}
.row input,.row select,.row textarea{
  width:100%;border:1px solid var(--border);border-radius:14px;
  padding:12px 12px;font-size:14px;outline:none;background:#fff;
  box-shadow:0 1px 0 rgba(0,0,0,.02) inset;
}
.row textarea{resize:vertical;min-height:84px}
.row input:focus,.row select:focus,.row textarea:focus{border-color:rgba(37,99,235,.55);box-shadow:0 0 0 3px rgba(37,99,235,.12)}

.check{display:flex;align-items:center;gap:10px}
.check input{width:auto}

.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.actions.split{justify-content:space-between}
.btn,button{
  border:1px solid var(--border);
  border-radius:14px;
  padding:11px 14px;
  font-size:14px;
  background:#fff;
  cursor:pointer;
}
button:disabled{opacity:.55;cursor:not-allowed}
.primary{background:var(--brand);border-color:rgba(37,99,235,.35);color:#fff;font-weight:600}
.ghost{background:transparent}

.codebox{
  border:1px solid var(--border);
  border-radius:16px;
  background:rgba(255,255,255,.85);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.codebox pre{margin:0;padding:14px 14px;max-height:340px;overflow:auto;font-size:12.5px;line-height:1.35}

.ok{
  border:1px solid rgba(34,197,94,.35);
  background:rgba(34,197,94,.08);
  border-radius:16px;
  padding:12px 14px;
  margin:0 0 14px;
}
.err{
  color:#b42318;
  background:rgba(180,35,24,.08);
  border:1px solid rgba(180,35,24,.25);
  border-radius:14px;
  padding:10px 12px;
  margin:12px 0 0;
  font-size:13px;
}
.sep{border:none;border-top:1px solid var(--border);margin:18px 0}